| Index: third_party/WebKit/Source/wtf/allocator/PartitionAllocTest.cpp
|
| diff --git a/third_party/WebKit/Source/wtf/allocator/PartitionAllocTest.cpp b/third_party/WebKit/Source/wtf/allocator/PartitionAllocTest.cpp
|
| deleted file mode 100644
|
| index 589d6e90d287341045e860752543924ae7a8506d..0000000000000000000000000000000000000000
|
| --- a/third_party/WebKit/Source/wtf/allocator/PartitionAllocTest.cpp
|
| +++ /dev/null
|
| @@ -1,2118 +0,0 @@
|
| -/*
|
| - * Copyright (C) 2013 Google Inc. All rights reserved.
|
| - *
|
| - * Redistribution and use in source and binary forms, with or without
|
| - * modification, are permitted provided that the following conditions are
|
| - * met:
|
| - *
|
| - * * Redistributions of source code must retain the above copyright
|
| - * notice, this list of conditions and the following disclaimer.
|
| - * * Redistributions in binary form must reproduce the above
|
| - * copyright notice, this list of conditions and the following disclaimer
|
| - * in the documentation and/or other materials provided with the
|
| - * distribution.
|
| - * * Neither the name of Google Inc. nor the names of its
|
| - * contributors may be used to endorse or promote products derived from
|
| - * this software without specific prior written permission.
|
| - *
|
| - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
| - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
| - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
| - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
| - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
| - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
| - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
| - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
| - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
| - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
| - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
| - */
|
| -
|
| -#include "wtf/allocator/PartitionAlloc.h"
|
| -
|
| -#include "testing/gtest/include/gtest/gtest.h"
|
| -#include "wtf/BitwiseOperations.h"
|
| -#include "wtf/CPU.h"
|
| -#include "wtf/PtrUtil.h"
|
| -#include "wtf/Vector.h"
|
| -#include <memory>
|
| -#include <stdlib.h>
|
| -#include <string.h>
|
| -
|
| -#if OS(POSIX)
|
| -#include <sys/mman.h>
|
| -#include <sys/resource.h>
|
| -#include <sys/time.h>
|
| -
|
| -#ifndef MAP_ANONYMOUS
|
| -#define MAP_ANONYMOUS MAP_ANON
|
| -#endif
|
| -#endif // OS(POSIX)
|
| -
|
| -#if !defined(MEMORY_TOOL_REPLACES_ALLOCATOR)
|
| -
|
| -namespace WTF {
|
| -
|
| -namespace {
|
| -
|
| -const size_t kTestMaxAllocation = 4096;
|
| -SizeSpecificPartitionAllocator<kTestMaxAllocation> allocator;
|
| -PartitionAllocatorGeneric genericAllocator;
|
| -
|
| -const size_t kTestAllocSize = 16;
|
| -#if !ENABLE(ASSERT)
|
| -const size_t kPointerOffset = 0;
|
| -const size_t kExtraAllocSize = 0;
|
| -#else
|
| -const size_t kPointerOffset = WTF::kCookieSize;
|
| -const size_t kExtraAllocSize = WTF::kCookieSize * 2;
|
| -#endif
|
| -const size_t kRealAllocSize = kTestAllocSize + kExtraAllocSize;
|
| -const size_t kTestBucketIndex = kRealAllocSize >> WTF::kBucketShift;
|
| -
|
| -const char* typeName = nullptr;
|
| -
|
| -void TestSetup() {
|
| - allocator.init();
|
| - genericAllocator.init();
|
| -}
|
| -
|
| -void TestShutdown() {
|
| - // We expect no leaks in the general case. We have a test for leak
|
| - // detection.
|
| - EXPECT_TRUE(allocator.shutdown());
|
| - EXPECT_TRUE(genericAllocator.shutdown());
|
| -}
|
| -
|
| -#if !CPU(64BIT) || OS(POSIX)
|
| -bool SetAddressSpaceLimit() {
|
| -#if !CPU(64BIT)
|
| - // 32 bits => address space is limited already.
|
| - return true;
|
| -#elif OS(POSIX) && !OS(MACOSX)
|
| - // Mac will accept RLIMIT_AS changes but it is not enforced.
|
| - // See https://crbug.com/435269 and rdar://17576114.
|
| - const size_t kAddressSpaceLimit = static_cast<size_t>(4096) * 1024 * 1024;
|
| - struct rlimit limit;
|
| - if (getrlimit(RLIMIT_AS, &limit) != 0)
|
| - return false;
|
| - if (limit.rlim_cur == RLIM_INFINITY || limit.rlim_cur > kAddressSpaceLimit) {
|
| - limit.rlim_cur = kAddressSpaceLimit;
|
| - if (setrlimit(RLIMIT_AS, &limit) != 0)
|
| - return false;
|
| - }
|
| - return true;
|
| -#else
|
| - return false;
|
| -#endif
|
| -}
|
| -
|
| -bool ClearAddressSpaceLimit() {
|
| -#if !CPU(64BIT)
|
| - return true;
|
| -#elif OS(POSIX)
|
| - struct rlimit limit;
|
| - if (getrlimit(RLIMIT_AS, &limit) != 0)
|
| - return false;
|
| - limit.rlim_cur = limit.rlim_max;
|
| - if (setrlimit(RLIMIT_AS, &limit) != 0)
|
| - return false;
|
| - return true;
|
| -#else
|
| - return false;
|
| -#endif
|
| -}
|
| -#endif
|
| -
|
| -PartitionPage* GetFullPage(size_t size) {
|
| - size_t realSize = size + kExtraAllocSize;
|
| - size_t bucketIdx = realSize >> kBucketShift;
|
| - PartitionBucket* bucket = &allocator.root()->buckets()[bucketIdx];
|
| - size_t numSlots =
|
| - (bucket->numSystemPagesPerSlotSpan * kSystemPageSize) / realSize;
|
| - void* first = 0;
|
| - void* last = 0;
|
| - size_t i;
|
| - for (i = 0; i < numSlots; ++i) {
|
| - void* ptr = partitionAlloc(allocator.root(), size, typeName);
|
| - EXPECT_TRUE(ptr);
|
| - if (!i)
|
| - first = partitionCookieFreePointerAdjust(ptr);
|
| - else if (i == numSlots - 1)
|
| - last = partitionCookieFreePointerAdjust(ptr);
|
| - }
|
| - EXPECT_EQ(partitionPointerToPage(first), partitionPointerToPage(last));
|
| - if (bucket->numSystemPagesPerSlotSpan == kNumSystemPagesPerPartitionPage)
|
| - EXPECT_EQ(reinterpret_cast<size_t>(first) & kPartitionPageBaseMask,
|
| - reinterpret_cast<size_t>(last) & kPartitionPageBaseMask);
|
| - EXPECT_EQ(numSlots,
|
| - static_cast<size_t>(bucket->activePagesHead->numAllocatedSlots));
|
| - EXPECT_EQ(0, bucket->activePagesHead->freelistHead);
|
| - EXPECT_TRUE(bucket->activePagesHead);
|
| - EXPECT_TRUE(bucket->activePagesHead != &PartitionRootGeneric::gSeedPage);
|
| - return bucket->activePagesHead;
|
| -}
|
| -
|
| -void FreeFullPage(PartitionPage* page) {
|
| - size_t size = page->bucket->slotSize;
|
| - size_t numSlots =
|
| - (page->bucket->numSystemPagesPerSlotSpan * kSystemPageSize) / size;
|
| - EXPECT_EQ(numSlots, static_cast<size_t>(abs(page->numAllocatedSlots)));
|
| - char* ptr = reinterpret_cast<char*>(partitionPageToPointer(page));
|
| - size_t i;
|
| - for (i = 0; i < numSlots; ++i) {
|
| - partitionFree(ptr + kPointerOffset);
|
| - ptr += size;
|
| - }
|
| -}
|
| -
|
| -void CycleFreeCache(size_t size) {
|
| - size_t realSize = size + kExtraAllocSize;
|
| - size_t bucketIdx = realSize >> kBucketShift;
|
| - PartitionBucket* bucket = &allocator.root()->buckets()[bucketIdx];
|
| - ASSERT(!bucket->activePagesHead->numAllocatedSlots);
|
| -
|
| - for (size_t i = 0; i < kMaxFreeableSpans; ++i) {
|
| - void* ptr = partitionAlloc(allocator.root(), size, typeName);
|
| - EXPECT_EQ(1, bucket->activePagesHead->numAllocatedSlots);
|
| - partitionFree(ptr);
|
| - EXPECT_EQ(0, bucket->activePagesHead->numAllocatedSlots);
|
| - EXPECT_NE(-1, bucket->activePagesHead->emptyCacheIndex);
|
| - }
|
| -}
|
| -
|
| -void CycleGenericFreeCache(size_t size) {
|
| - for (size_t i = 0; i < kMaxFreeableSpans; ++i) {
|
| - void* ptr = partitionAllocGeneric(genericAllocator.root(), size, typeName);
|
| - PartitionPage* page =
|
| - partitionPointerToPage(partitionCookieFreePointerAdjust(ptr));
|
| - PartitionBucket* bucket = page->bucket;
|
| - EXPECT_EQ(1, bucket->activePagesHead->numAllocatedSlots);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr);
|
| - EXPECT_EQ(0, bucket->activePagesHead->numAllocatedSlots);
|
| - EXPECT_NE(-1, bucket->activePagesHead->emptyCacheIndex);
|
| - }
|
| -}
|
| -
|
| -void CheckPageInCore(void* ptr, bool inCore) {
|
| -#if OS(LINUX)
|
| - unsigned char ret;
|
| - EXPECT_EQ(0, mincore(ptr, kSystemPageSize, &ret));
|
| - EXPECT_EQ(inCore, ret);
|
| -#endif
|
| -}
|
| -
|
| -class MockPartitionStatsDumper : public PartitionStatsDumper {
|
| - public:
|
| - MockPartitionStatsDumper()
|
| - : m_totalResidentBytes(0),
|
| - m_totalActiveBytes(0),
|
| - m_totalDecommittableBytes(0),
|
| - m_totalDiscardableBytes(0) {}
|
| -
|
| - void partitionDumpTotals(const char* partitionName,
|
| - const PartitionMemoryStats* memoryStats) override {
|
| - EXPECT_GE(memoryStats->totalMmappedBytes, memoryStats->totalResidentBytes);
|
| - EXPECT_EQ(m_totalResidentBytes, memoryStats->totalResidentBytes);
|
| - EXPECT_EQ(m_totalActiveBytes, memoryStats->totalActiveBytes);
|
| - EXPECT_EQ(m_totalDecommittableBytes, memoryStats->totalDecommittableBytes);
|
| - EXPECT_EQ(m_totalDiscardableBytes, memoryStats->totalDiscardableBytes);
|
| - }
|
| -
|
| - void partitionsDumpBucketStats(
|
| - const char* partitionName,
|
| - const PartitionBucketMemoryStats* memoryStats) override {
|
| - (void)partitionName;
|
| - EXPECT_TRUE(memoryStats->isValid);
|
| - EXPECT_EQ(0u, memoryStats->bucketSlotSize & kAllocationGranularityMask);
|
| - m_bucketStats.append(*memoryStats);
|
| - m_totalResidentBytes += memoryStats->residentBytes;
|
| - m_totalActiveBytes += memoryStats->activeBytes;
|
| - m_totalDecommittableBytes += memoryStats->decommittableBytes;
|
| - m_totalDiscardableBytes += memoryStats->discardableBytes;
|
| - }
|
| -
|
| - bool IsMemoryAllocationRecorded() {
|
| - return m_totalResidentBytes != 0 && m_totalActiveBytes != 0;
|
| - }
|
| -
|
| - const PartitionBucketMemoryStats* GetBucketStats(size_t bucketSize) {
|
| - for (size_t i = 0; i < m_bucketStats.size(); ++i) {
|
| - if (m_bucketStats[i].bucketSlotSize == bucketSize)
|
| - return &m_bucketStats[i];
|
| - }
|
| - return 0;
|
| - }
|
| -
|
| - private:
|
| - size_t m_totalResidentBytes;
|
| - size_t m_totalActiveBytes;
|
| - size_t m_totalDecommittableBytes;
|
| - size_t m_totalDiscardableBytes;
|
| -
|
| - Vector<PartitionBucketMemoryStats> m_bucketStats;
|
| -};
|
| -
|
| -} // anonymous namespace
|
| -
|
| -// Check that the most basic of allocate / free pairs work.
|
| -TEST(PartitionAllocTest, Basic) {
|
| - TestSetup();
|
| - PartitionBucket* bucket = &allocator.root()->buckets()[kTestBucketIndex];
|
| - PartitionPage* seedPage = &PartitionRootGeneric::gSeedPage;
|
| -
|
| - EXPECT_FALSE(bucket->emptyPagesHead);
|
| - EXPECT_FALSE(bucket->decommittedPagesHead);
|
| - EXPECT_EQ(seedPage, bucket->activePagesHead);
|
| - EXPECT_EQ(0, bucket->activePagesHead->nextPage);
|
| -
|
| - void* ptr = partitionAlloc(allocator.root(), kTestAllocSize, typeName);
|
| - EXPECT_TRUE(ptr);
|
| - EXPECT_EQ(kPointerOffset,
|
| - reinterpret_cast<size_t>(ptr) & kPartitionPageOffsetMask);
|
| - // Check that the offset appears to include a guard page.
|
| - EXPECT_EQ(kPartitionPageSize + kPointerOffset,
|
| - reinterpret_cast<size_t>(ptr) & kSuperPageOffsetMask);
|
| -
|
| - partitionFree(ptr);
|
| - // Expect that the last active page gets noticed as empty but doesn't get
|
| - // decommitted.
|
| - EXPECT_TRUE(bucket->emptyPagesHead);
|
| - EXPECT_FALSE(bucket->decommittedPagesHead);
|
| -
|
| - TestShutdown();
|
| -}
|
| -
|
| -// Check that we can detect a memory leak.
|
| -TEST(PartitionAllocTest, SimpleLeak) {
|
| - TestSetup();
|
| - void* leakedPtr = partitionAlloc(allocator.root(), kTestAllocSize, typeName);
|
| - (void)leakedPtr;
|
| - void* leakedPtr2 =
|
| - partitionAllocGeneric(genericAllocator.root(), kTestAllocSize, typeName);
|
| - (void)leakedPtr2;
|
| - EXPECT_FALSE(allocator.shutdown());
|
| - EXPECT_FALSE(genericAllocator.shutdown());
|
| -}
|
| -
|
| -// Test multiple allocations, and freelist handling.
|
| -TEST(PartitionAllocTest, MultiAlloc) {
|
| - TestSetup();
|
| -
|
| - char* ptr1 = reinterpret_cast<char*>(
|
| - partitionAlloc(allocator.root(), kTestAllocSize, typeName));
|
| - char* ptr2 = reinterpret_cast<char*>(
|
| - partitionAlloc(allocator.root(), kTestAllocSize, typeName));
|
| - EXPECT_TRUE(ptr1);
|
| - EXPECT_TRUE(ptr2);
|
| - ptrdiff_t diff = ptr2 - ptr1;
|
| - EXPECT_EQ(static_cast<ptrdiff_t>(kRealAllocSize), diff);
|
| -
|
| - // Check that we re-use the just-freed slot.
|
| - partitionFree(ptr2);
|
| - ptr2 = reinterpret_cast<char*>(
|
| - partitionAlloc(allocator.root(), kTestAllocSize, typeName));
|
| - EXPECT_TRUE(ptr2);
|
| - diff = ptr2 - ptr1;
|
| - EXPECT_EQ(static_cast<ptrdiff_t>(kRealAllocSize), diff);
|
| - partitionFree(ptr1);
|
| - ptr1 = reinterpret_cast<char*>(
|
| - partitionAlloc(allocator.root(), kTestAllocSize, typeName));
|
| - EXPECT_TRUE(ptr1);
|
| - diff = ptr2 - ptr1;
|
| - EXPECT_EQ(static_cast<ptrdiff_t>(kRealAllocSize), diff);
|
| -
|
| - char* ptr3 = reinterpret_cast<char*>(
|
| - partitionAlloc(allocator.root(), kTestAllocSize, typeName));
|
| - EXPECT_TRUE(ptr3);
|
| - diff = ptr3 - ptr1;
|
| - EXPECT_EQ(static_cast<ptrdiff_t>(kRealAllocSize * 2), diff);
|
| -
|
| - partitionFree(ptr1);
|
| - partitionFree(ptr2);
|
| - partitionFree(ptr3);
|
| -
|
| - TestShutdown();
|
| -}
|
| -
|
| -// Test a bucket with multiple pages.
|
| -TEST(PartitionAllocTest, MultiPages) {
|
| - TestSetup();
|
| - PartitionBucket* bucket = &allocator.root()->buckets()[kTestBucketIndex];
|
| -
|
| - PartitionPage* page = GetFullPage(kTestAllocSize);
|
| - FreeFullPage(page);
|
| - EXPECT_TRUE(bucket->emptyPagesHead);
|
| - EXPECT_EQ(&PartitionRootGeneric::gSeedPage, bucket->activePagesHead);
|
| - EXPECT_EQ(0, page->nextPage);
|
| - EXPECT_EQ(0, page->numAllocatedSlots);
|
| -
|
| - page = GetFullPage(kTestAllocSize);
|
| - PartitionPage* page2 = GetFullPage(kTestAllocSize);
|
| -
|
| - EXPECT_EQ(page2, bucket->activePagesHead);
|
| - EXPECT_EQ(0, page2->nextPage);
|
| - EXPECT_EQ(reinterpret_cast<uintptr_t>(partitionPageToPointer(page)) &
|
| - kSuperPageBaseMask,
|
| - reinterpret_cast<uintptr_t>(partitionPageToPointer(page2)) &
|
| - kSuperPageBaseMask);
|
| -
|
| - // Fully free the non-current page. This will leave us with no current
|
| - // active page because one is empty and the other is full.
|
| - FreeFullPage(page);
|
| - EXPECT_EQ(0, page->numAllocatedSlots);
|
| - EXPECT_TRUE(bucket->emptyPagesHead);
|
| - EXPECT_EQ(&PartitionRootGeneric::gSeedPage, bucket->activePagesHead);
|
| -
|
| - // Allocate a new page, it should pull from the freelist.
|
| - page = GetFullPage(kTestAllocSize);
|
| - EXPECT_FALSE(bucket->emptyPagesHead);
|
| - EXPECT_EQ(page, bucket->activePagesHead);
|
| -
|
| - FreeFullPage(page);
|
| - FreeFullPage(page2);
|
| - EXPECT_EQ(0, page->numAllocatedSlots);
|
| - EXPECT_EQ(0, page2->numAllocatedSlots);
|
| - EXPECT_EQ(0, page2->numUnprovisionedSlots);
|
| - EXPECT_NE(-1, page2->emptyCacheIndex);
|
| -
|
| - TestShutdown();
|
| -}
|
| -
|
| -// Test some finer aspects of internal page transitions.
|
| -TEST(PartitionAllocTest, PageTransitions) {
|
| - TestSetup();
|
| - PartitionBucket* bucket = &allocator.root()->buckets()[kTestBucketIndex];
|
| -
|
| - PartitionPage* page1 = GetFullPage(kTestAllocSize);
|
| - EXPECT_EQ(page1, bucket->activePagesHead);
|
| - EXPECT_EQ(0, page1->nextPage);
|
| - PartitionPage* page2 = GetFullPage(kTestAllocSize);
|
| - EXPECT_EQ(page2, bucket->activePagesHead);
|
| - EXPECT_EQ(0, page2->nextPage);
|
| -
|
| - // Bounce page1 back into the non-full list then fill it up again.
|
| - char* ptr =
|
| - reinterpret_cast<char*>(partitionPageToPointer(page1)) + kPointerOffset;
|
| - partitionFree(ptr);
|
| - EXPECT_EQ(page1, bucket->activePagesHead);
|
| - (void)partitionAlloc(allocator.root(), kTestAllocSize, typeName);
|
| - EXPECT_EQ(page1, bucket->activePagesHead);
|
| - EXPECT_EQ(page2, bucket->activePagesHead->nextPage);
|
| -
|
| - // Allocating another page at this point should cause us to scan over page1
|
| - // (which is both full and NOT our current page), and evict it from the
|
| - // freelist. Older code had a O(n^2) condition due to failure to do this.
|
| - PartitionPage* page3 = GetFullPage(kTestAllocSize);
|
| - EXPECT_EQ(page3, bucket->activePagesHead);
|
| - EXPECT_EQ(0, page3->nextPage);
|
| -
|
| - // Work out a pointer into page2 and free it.
|
| - ptr = reinterpret_cast<char*>(partitionPageToPointer(page2)) + kPointerOffset;
|
| - partitionFree(ptr);
|
| - // Trying to allocate at this time should cause us to cycle around to page2
|
| - // and find the recently freed slot.
|
| - char* newPtr = reinterpret_cast<char*>(
|
| - partitionAlloc(allocator.root(), kTestAllocSize, typeName));
|
| - EXPECT_EQ(ptr, newPtr);
|
| - EXPECT_EQ(page2, bucket->activePagesHead);
|
| - EXPECT_EQ(page3, page2->nextPage);
|
| -
|
| - // Work out a pointer into page1 and free it. This should pull the page
|
| - // back into the list of available pages.
|
| - ptr = reinterpret_cast<char*>(partitionPageToPointer(page1)) + kPointerOffset;
|
| - partitionFree(ptr);
|
| - // This allocation should be satisfied by page1.
|
| - newPtr = reinterpret_cast<char*>(
|
| - partitionAlloc(allocator.root(), kTestAllocSize, typeName));
|
| - EXPECT_EQ(ptr, newPtr);
|
| - EXPECT_EQ(page1, bucket->activePagesHead);
|
| - EXPECT_EQ(page2, page1->nextPage);
|
| -
|
| - FreeFullPage(page3);
|
| - FreeFullPage(page2);
|
| - FreeFullPage(page1);
|
| -
|
| - // Allocating whilst in this state exposed a bug, so keep the test.
|
| - ptr = reinterpret_cast<char*>(
|
| - partitionAlloc(allocator.root(), kTestAllocSize, typeName));
|
| - partitionFree(ptr);
|
| -
|
| - TestShutdown();
|
| -}
|
| -
|
| -// Test some corner cases relating to page transitions in the internal
|
| -// free page list metadata bucket.
|
| -TEST(PartitionAllocTest, FreePageListPageTransitions) {
|
| - TestSetup();
|
| - PartitionBucket* bucket = &allocator.root()->buckets()[kTestBucketIndex];
|
| -
|
| - size_t numToFillFreeListPage =
|
| - kPartitionPageSize / (sizeof(PartitionPage) + kExtraAllocSize);
|
| - // The +1 is because we need to account for the fact that the current page
|
| - // never gets thrown on the freelist.
|
| - ++numToFillFreeListPage;
|
| - std::unique_ptr<PartitionPage* []> pages =
|
| - wrapArrayUnique(new PartitionPage*[numToFillFreeListPage]);
|
| -
|
| - size_t i;
|
| - for (i = 0; i < numToFillFreeListPage; ++i) {
|
| - pages[i] = GetFullPage(kTestAllocSize);
|
| - }
|
| - EXPECT_EQ(pages[numToFillFreeListPage - 1], bucket->activePagesHead);
|
| - for (i = 0; i < numToFillFreeListPage; ++i)
|
| - FreeFullPage(pages[i]);
|
| - EXPECT_EQ(&PartitionRootGeneric::gSeedPage, bucket->activePagesHead);
|
| - EXPECT_TRUE(bucket->emptyPagesHead);
|
| -
|
| - // Allocate / free in a different bucket size so we get control of a
|
| - // different free page list. We need two pages because one will be the last
|
| - // active page and not get freed.
|
| - PartitionPage* page1 = GetFullPage(kTestAllocSize * 2);
|
| - PartitionPage* page2 = GetFullPage(kTestAllocSize * 2);
|
| - FreeFullPage(page1);
|
| - FreeFullPage(page2);
|
| -
|
| - for (i = 0; i < numToFillFreeListPage; ++i) {
|
| - pages[i] = GetFullPage(kTestAllocSize);
|
| - }
|
| - EXPECT_EQ(pages[numToFillFreeListPage - 1], bucket->activePagesHead);
|
| -
|
| - for (i = 0; i < numToFillFreeListPage; ++i)
|
| - FreeFullPage(pages[i]);
|
| - EXPECT_EQ(&PartitionRootGeneric::gSeedPage, bucket->activePagesHead);
|
| - EXPECT_TRUE(bucket->emptyPagesHead);
|
| -
|
| - TestShutdown();
|
| -}
|
| -
|
| -// Test a large series of allocations that cross more than one underlying
|
| -// 64KB super page allocation.
|
| -TEST(PartitionAllocTest, MultiPageAllocs) {
|
| - TestSetup();
|
| - // This is guaranteed to cross a super page boundary because the first
|
| - // partition page "slot" will be taken up by a guard page.
|
| - size_t numPagesNeeded = kNumPartitionPagesPerSuperPage;
|
| - // The super page should begin and end in a guard so we one less page in
|
| - // order to allocate a single page in the new super page.
|
| - --numPagesNeeded;
|
| -
|
| - EXPECT_GT(numPagesNeeded, 1u);
|
| - std::unique_ptr<PartitionPage* []> pages;
|
| - pages = wrapArrayUnique(new PartitionPage*[numPagesNeeded]);
|
| - uintptr_t firstSuperPageBase = 0;
|
| - size_t i;
|
| - for (i = 0; i < numPagesNeeded; ++i) {
|
| - pages[i] = GetFullPage(kTestAllocSize);
|
| - void* storagePtr = partitionPageToPointer(pages[i]);
|
| - if (!i)
|
| - firstSuperPageBase =
|
| - reinterpret_cast<uintptr_t>(storagePtr) & kSuperPageBaseMask;
|
| - if (i == numPagesNeeded - 1) {
|
| - uintptr_t secondSuperPageBase =
|
| - reinterpret_cast<uintptr_t>(storagePtr) & kSuperPageBaseMask;
|
| - uintptr_t secondSuperPageOffset =
|
| - reinterpret_cast<uintptr_t>(storagePtr) & kSuperPageOffsetMask;
|
| - EXPECT_FALSE(secondSuperPageBase == firstSuperPageBase);
|
| - // Check that we allocated a guard page for the second page.
|
| - EXPECT_EQ(kPartitionPageSize, secondSuperPageOffset);
|
| - }
|
| - }
|
| - for (i = 0; i < numPagesNeeded; ++i)
|
| - FreeFullPage(pages[i]);
|
| -
|
| - TestShutdown();
|
| -}
|
| -
|
| -// Test the generic allocation functions that can handle arbitrary sizes and
|
| -// reallocing etc.
|
| -TEST(PartitionAllocTest, GenericAlloc) {
|
| - TestSetup();
|
| -
|
| - void* ptr = partitionAllocGeneric(genericAllocator.root(), 1, typeName);
|
| - EXPECT_TRUE(ptr);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr);
|
| - ptr = partitionAllocGeneric(genericAllocator.root(), kGenericMaxBucketed + 1,
|
| - typeName);
|
| - EXPECT_TRUE(ptr);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr);
|
| -
|
| - ptr = partitionAllocGeneric(genericAllocator.root(), 1, typeName);
|
| - EXPECT_TRUE(ptr);
|
| - void* origPtr = ptr;
|
| - char* charPtr = static_cast<char*>(ptr);
|
| - *charPtr = 'A';
|
| -
|
| - // Change the size of the realloc, remaining inside the same bucket.
|
| - void* newPtr =
|
| - partitionReallocGeneric(genericAllocator.root(), ptr, 2, typeName);
|
| - EXPECT_EQ(ptr, newPtr);
|
| - newPtr = partitionReallocGeneric(genericAllocator.root(), ptr, 1, typeName);
|
| - EXPECT_EQ(ptr, newPtr);
|
| - newPtr = partitionReallocGeneric(genericAllocator.root(), ptr,
|
| - kGenericSmallestBucket, typeName);
|
| - EXPECT_EQ(ptr, newPtr);
|
| -
|
| - // Change the size of the realloc, switching buckets.
|
| - newPtr = partitionReallocGeneric(genericAllocator.root(), ptr,
|
| - kGenericSmallestBucket + 1, typeName);
|
| - EXPECT_NE(newPtr, ptr);
|
| - // Check that the realloc copied correctly.
|
| - char* newCharPtr = static_cast<char*>(newPtr);
|
| - EXPECT_EQ(*newCharPtr, 'A');
|
| -#if ENABLE(ASSERT)
|
| - // Subtle: this checks for an old bug where we copied too much from the
|
| - // source of the realloc. The condition can be detected by a trashing of
|
| - // the uninitialized value in the space of the upsized allocation.
|
| - EXPECT_EQ(kUninitializedByte,
|
| - static_cast<unsigned char>(*(newCharPtr + kGenericSmallestBucket)));
|
| -#endif
|
| - *newCharPtr = 'B';
|
| - // The realloc moved. To check that the old allocation was freed, we can
|
| - // do an alloc of the old allocation size and check that the old allocation
|
| - // address is at the head of the freelist and reused.
|
| - void* reusedPtr = partitionAllocGeneric(genericAllocator.root(), 1, typeName);
|
| - EXPECT_EQ(reusedPtr, origPtr);
|
| - partitionFreeGeneric(genericAllocator.root(), reusedPtr);
|
| -
|
| - // Downsize the realloc.
|
| - ptr = newPtr;
|
| - newPtr = partitionReallocGeneric(genericAllocator.root(), ptr, 1, typeName);
|
| - EXPECT_EQ(newPtr, origPtr);
|
| - newCharPtr = static_cast<char*>(newPtr);
|
| - EXPECT_EQ(*newCharPtr, 'B');
|
| - *newCharPtr = 'C';
|
| -
|
| - // Upsize the realloc to outside the partition.
|
| - ptr = newPtr;
|
| - newPtr = partitionReallocGeneric(genericAllocator.root(), ptr,
|
| - kGenericMaxBucketed + 1, typeName);
|
| - EXPECT_NE(newPtr, ptr);
|
| - newCharPtr = static_cast<char*>(newPtr);
|
| - EXPECT_EQ(*newCharPtr, 'C');
|
| - *newCharPtr = 'D';
|
| -
|
| - // Upsize and downsize the realloc, remaining outside the partition.
|
| - ptr = newPtr;
|
| - newPtr = partitionReallocGeneric(genericAllocator.root(), ptr,
|
| - kGenericMaxBucketed * 10, typeName);
|
| - newCharPtr = static_cast<char*>(newPtr);
|
| - EXPECT_EQ(*newCharPtr, 'D');
|
| - *newCharPtr = 'E';
|
| - ptr = newPtr;
|
| - newPtr = partitionReallocGeneric(genericAllocator.root(), ptr,
|
| - kGenericMaxBucketed * 2, typeName);
|
| - newCharPtr = static_cast<char*>(newPtr);
|
| - EXPECT_EQ(*newCharPtr, 'E');
|
| - *newCharPtr = 'F';
|
| -
|
| - // Downsize the realloc to inside the partition.
|
| - ptr = newPtr;
|
| - newPtr = partitionReallocGeneric(genericAllocator.root(), ptr, 1, typeName);
|
| - EXPECT_NE(newPtr, ptr);
|
| - EXPECT_EQ(newPtr, origPtr);
|
| - newCharPtr = static_cast<char*>(newPtr);
|
| - EXPECT_EQ(*newCharPtr, 'F');
|
| -
|
| - partitionFreeGeneric(genericAllocator.root(), newPtr);
|
| - TestShutdown();
|
| -}
|
| -
|
| -// Test the generic allocation functions can handle some specific sizes of
|
| -// interest.
|
| -TEST(PartitionAllocTest, GenericAllocSizes) {
|
| - TestSetup();
|
| -
|
| - void* ptr = partitionAllocGeneric(genericAllocator.root(), 0, typeName);
|
| - EXPECT_TRUE(ptr);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr);
|
| -
|
| - // kPartitionPageSize is interesting because it results in just one
|
| - // allocation per page, which tripped up some corner cases.
|
| - size_t size = kPartitionPageSize - kExtraAllocSize;
|
| - ptr = partitionAllocGeneric(genericAllocator.root(), size, typeName);
|
| - EXPECT_TRUE(ptr);
|
| - void* ptr2 = partitionAllocGeneric(genericAllocator.root(), size, typeName);
|
| - EXPECT_TRUE(ptr2);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr);
|
| - // Should be freeable at this point.
|
| - PartitionPage* page =
|
| - partitionPointerToPage(partitionCookieFreePointerAdjust(ptr));
|
| - EXPECT_NE(-1, page->emptyCacheIndex);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr2);
|
| -
|
| - size = (((kPartitionPageSize * kMaxPartitionPagesPerSlotSpan) -
|
| - kSystemPageSize) /
|
| - 2) -
|
| - kExtraAllocSize;
|
| - ptr = partitionAllocGeneric(genericAllocator.root(), size, typeName);
|
| - EXPECT_TRUE(ptr);
|
| - memset(ptr, 'A', size);
|
| - ptr2 = partitionAllocGeneric(genericAllocator.root(), size, typeName);
|
| - EXPECT_TRUE(ptr2);
|
| - void* ptr3 = partitionAllocGeneric(genericAllocator.root(), size, typeName);
|
| - EXPECT_TRUE(ptr3);
|
| - void* ptr4 = partitionAllocGeneric(genericAllocator.root(), size, typeName);
|
| - EXPECT_TRUE(ptr4);
|
| -
|
| - page = partitionPointerToPage(partitionCookieFreePointerAdjust(ptr));
|
| - PartitionPage* page2 =
|
| - partitionPointerToPage(partitionCookieFreePointerAdjust(ptr3));
|
| - EXPECT_NE(page, page2);
|
| -
|
| - partitionFreeGeneric(genericAllocator.root(), ptr);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr3);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr2);
|
| - // Should be freeable at this point.
|
| - EXPECT_NE(-1, page->emptyCacheIndex);
|
| - EXPECT_EQ(0, page->numAllocatedSlots);
|
| - EXPECT_EQ(0, page->numUnprovisionedSlots);
|
| - void* newPtr = partitionAllocGeneric(genericAllocator.root(), size, typeName);
|
| - EXPECT_EQ(ptr3, newPtr);
|
| - newPtr = partitionAllocGeneric(genericAllocator.root(), size, typeName);
|
| - EXPECT_EQ(ptr2, newPtr);
|
| -#if OS(LINUX) && !ENABLE(ASSERT)
|
| - // On Linux, we have a guarantee that freelisting a page should cause its
|
| - // contents to be nulled out. We check for null here to detect an bug we
|
| - // had where a large slot size was causing us to not properly free all
|
| - // resources back to the system.
|
| - // We only run the check when asserts are disabled because when they are
|
| - // enabled, the allocated area is overwritten with an "uninitialized"
|
| - // byte pattern.
|
| - EXPECT_EQ(0, *(reinterpret_cast<char*>(newPtr) + (size - 1)));
|
| -#endif
|
| - partitionFreeGeneric(genericAllocator.root(), newPtr);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr3);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr4);
|
| -
|
| - // Can we allocate a massive (512MB) size?
|
| - // Allocate 512MB, but +1, to test for cookie writing alignment issues.
|
| - ptr = partitionAllocGeneric(genericAllocator.root(), 512 * 1024 * 1024 + 1,
|
| - typeName);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr);
|
| -
|
| - // Check a more reasonable, but still direct mapped, size.
|
| - // Chop a system page and a byte off to test for rounding errors.
|
| - size = 20 * 1024 * 1024;
|
| - size -= kSystemPageSize;
|
| - size -= 1;
|
| - ptr = partitionAllocGeneric(genericAllocator.root(), size, typeName);
|
| - char* charPtr = reinterpret_cast<char*>(ptr);
|
| - *(charPtr + (size - 1)) = 'A';
|
| - partitionFreeGeneric(genericAllocator.root(), ptr);
|
| -
|
| - // Can we free null?
|
| - partitionFreeGeneric(genericAllocator.root(), 0);
|
| -
|
| - // Do we correctly get a null for a failed allocation?
|
| - EXPECT_EQ(0, partitionAllocGenericFlags(genericAllocator.root(),
|
| - PartitionAllocReturnNull,
|
| - 3u * 1024 * 1024 * 1024, typeName));
|
| -
|
| - TestShutdown();
|
| -}
|
| -
|
| -// Test that we can fetch the real allocated size after an allocation.
|
| -TEST(PartitionAllocTest, GenericAllocGetSize) {
|
| - TestSetup();
|
| -
|
| - void* ptr;
|
| - size_t requestedSize, actualSize, predictedSize;
|
| -
|
| - EXPECT_TRUE(partitionAllocSupportsGetSize());
|
| -
|
| - // Allocate something small.
|
| - requestedSize = 511 - kExtraAllocSize;
|
| - predictedSize =
|
| - partitionAllocActualSize(genericAllocator.root(), requestedSize);
|
| - ptr = partitionAllocGeneric(genericAllocator.root(), requestedSize, typeName);
|
| - EXPECT_TRUE(ptr);
|
| - actualSize = partitionAllocGetSize(ptr);
|
| - EXPECT_EQ(predictedSize, actualSize);
|
| - EXPECT_LT(requestedSize, actualSize);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr);
|
| -
|
| - // Allocate a size that should be a perfect match for a bucket, because it
|
| - // is an exact power of 2.
|
| - requestedSize = (256 * 1024) - kExtraAllocSize;
|
| - predictedSize =
|
| - partitionAllocActualSize(genericAllocator.root(), requestedSize);
|
| - ptr = partitionAllocGeneric(genericAllocator.root(), requestedSize, typeName);
|
| - EXPECT_TRUE(ptr);
|
| - actualSize = partitionAllocGetSize(ptr);
|
| - EXPECT_EQ(predictedSize, actualSize);
|
| - EXPECT_EQ(requestedSize, actualSize);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr);
|
| -
|
| - // Allocate a size that is a system page smaller than a bucket. GetSize()
|
| - // should return a larger size than we asked for now.
|
| - requestedSize = (256 * 1024) - kSystemPageSize - kExtraAllocSize;
|
| - predictedSize =
|
| - partitionAllocActualSize(genericAllocator.root(), requestedSize);
|
| - ptr = partitionAllocGeneric(genericAllocator.root(), requestedSize, typeName);
|
| - EXPECT_TRUE(ptr);
|
| - actualSize = partitionAllocGetSize(ptr);
|
| - EXPECT_EQ(predictedSize, actualSize);
|
| - EXPECT_EQ(requestedSize + kSystemPageSize, actualSize);
|
| - // Check that we can write at the end of the reported size too.
|
| - char* charPtr = reinterpret_cast<char*>(ptr);
|
| - *(charPtr + (actualSize - 1)) = 'A';
|
| - partitionFreeGeneric(genericAllocator.root(), ptr);
|
| -
|
| - // Allocate something very large, and uneven.
|
| - requestedSize = 512 * 1024 * 1024 - 1;
|
| - predictedSize =
|
| - partitionAllocActualSize(genericAllocator.root(), requestedSize);
|
| - ptr = partitionAllocGeneric(genericAllocator.root(), requestedSize, typeName);
|
| - EXPECT_TRUE(ptr);
|
| - actualSize = partitionAllocGetSize(ptr);
|
| - EXPECT_EQ(predictedSize, actualSize);
|
| - EXPECT_LT(requestedSize, actualSize);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr);
|
| -
|
| - // Too large allocation.
|
| - requestedSize = INT_MAX;
|
| - predictedSize =
|
| - partitionAllocActualSize(genericAllocator.root(), requestedSize);
|
| - EXPECT_EQ(requestedSize, predictedSize);
|
| -
|
| - TestShutdown();
|
| -}
|
| -
|
| -// Test the realloc() contract.
|
| -TEST(PartitionAllocTest, Realloc) {
|
| - TestSetup();
|
| -
|
| - // realloc(0, size) should be equivalent to malloc().
|
| - void* ptr = partitionReallocGeneric(genericAllocator.root(), 0,
|
| - kTestAllocSize, typeName);
|
| - memset(ptr, 'A', kTestAllocSize);
|
| - PartitionPage* page =
|
| - partitionPointerToPage(partitionCookieFreePointerAdjust(ptr));
|
| - // realloc(ptr, 0) should be equivalent to free().
|
| - void* ptr2 =
|
| - partitionReallocGeneric(genericAllocator.root(), ptr, 0, typeName);
|
| - EXPECT_EQ(0, ptr2);
|
| - EXPECT_EQ(partitionCookieFreePointerAdjust(ptr), page->freelistHead);
|
| -
|
| - // Test that growing an allocation with realloc() copies everything from the
|
| - // old allocation.
|
| - size_t size = kSystemPageSize - kExtraAllocSize;
|
| - EXPECT_EQ(size, partitionAllocActualSize(genericAllocator.root(), size));
|
| - ptr = partitionAllocGeneric(genericAllocator.root(), size, typeName);
|
| - memset(ptr, 'A', size);
|
| - ptr2 =
|
| - partitionReallocGeneric(genericAllocator.root(), ptr, size + 1, typeName);
|
| - EXPECT_NE(ptr, ptr2);
|
| - char* charPtr2 = static_cast<char*>(ptr2);
|
| - EXPECT_EQ('A', charPtr2[0]);
|
| - EXPECT_EQ('A', charPtr2[size - 1]);
|
| -#if ENABLE(ASSERT)
|
| - EXPECT_EQ(kUninitializedByte, static_cast<unsigned char>(charPtr2[size]));
|
| -#endif
|
| -
|
| - // Test that shrinking an allocation with realloc() also copies everything
|
| - // from the old allocation.
|
| - ptr = partitionReallocGeneric(genericAllocator.root(), ptr2, size - 1,
|
| - typeName);
|
| - EXPECT_NE(ptr2, ptr);
|
| - char* charPtr = static_cast<char*>(ptr);
|
| - EXPECT_EQ('A', charPtr[0]);
|
| - EXPECT_EQ('A', charPtr[size - 2]);
|
| -#if ENABLE(ASSERT)
|
| - EXPECT_EQ(kUninitializedByte, static_cast<unsigned char>(charPtr[size - 1]));
|
| -#endif
|
| -
|
| - partitionFreeGeneric(genericAllocator.root(), ptr);
|
| -
|
| - // Test that shrinking a direct mapped allocation happens in-place.
|
| - size = kGenericMaxBucketed + 16 * kSystemPageSize;
|
| - ptr = partitionAllocGeneric(genericAllocator.root(), size, typeName);
|
| - size_t actualSize = partitionAllocGetSize(ptr);
|
| - ptr2 = partitionReallocGeneric(genericAllocator.root(), ptr,
|
| - kGenericMaxBucketed + 8 * kSystemPageSize,
|
| - typeName);
|
| - EXPECT_EQ(ptr, ptr2);
|
| - EXPECT_EQ(actualSize - 8 * kSystemPageSize, partitionAllocGetSize(ptr2));
|
| -
|
| - // Test that a previously in-place shrunk direct mapped allocation can be
|
| - // expanded up again within its original size.
|
| - ptr = partitionReallocGeneric(genericAllocator.root(), ptr2,
|
| - size - kSystemPageSize, typeName);
|
| - EXPECT_EQ(ptr2, ptr);
|
| - EXPECT_EQ(actualSize - kSystemPageSize, partitionAllocGetSize(ptr));
|
| -
|
| - // Test that a direct mapped allocation is performed not in-place when the
|
| - // new size is small enough.
|
| - ptr2 = partitionReallocGeneric(genericAllocator.root(), ptr, kSystemPageSize,
|
| - typeName);
|
| - EXPECT_NE(ptr, ptr2);
|
| -
|
| - partitionFreeGeneric(genericAllocator.root(), ptr2);
|
| -
|
| - TestShutdown();
|
| -}
|
| -
|
| -// Tests the handing out of freelists for partial pages.
|
| -TEST(PartitionAllocTest, PartialPageFreelists) {
|
| - TestSetup();
|
| -
|
| - size_t bigSize = allocator.root()->maxAllocation - kExtraAllocSize;
|
| - EXPECT_EQ(kSystemPageSize - kAllocationGranularity,
|
| - bigSize + kExtraAllocSize);
|
| - size_t bucketIdx = (bigSize + kExtraAllocSize) >> kBucketShift;
|
| - PartitionBucket* bucket = &allocator.root()->buckets()[bucketIdx];
|
| - EXPECT_EQ(0, bucket->emptyPagesHead);
|
| -
|
| - void* ptr = partitionAlloc(allocator.root(), bigSize, typeName);
|
| - EXPECT_TRUE(ptr);
|
| -
|
| - PartitionPage* page =
|
| - partitionPointerToPage(partitionCookieFreePointerAdjust(ptr));
|
| - size_t totalSlots =
|
| - (page->bucket->numSystemPagesPerSlotSpan * kSystemPageSize) /
|
| - (bigSize + kExtraAllocSize);
|
| - EXPECT_EQ(4u, totalSlots);
|
| - // The freelist should have one entry, because we were able to exactly fit
|
| - // one object slot and one freelist pointer (the null that the head points
|
| - // to) into a system page.
|
| - EXPECT_TRUE(page->freelistHead);
|
| - EXPECT_EQ(1, page->numAllocatedSlots);
|
| - EXPECT_EQ(2, page->numUnprovisionedSlots);
|
| -
|
| - void* ptr2 = partitionAlloc(allocator.root(), bigSize, typeName);
|
| - EXPECT_TRUE(ptr2);
|
| - EXPECT_FALSE(page->freelistHead);
|
| - EXPECT_EQ(2, page->numAllocatedSlots);
|
| - EXPECT_EQ(2, page->numUnprovisionedSlots);
|
| -
|
| - void* ptr3 = partitionAlloc(allocator.root(), bigSize, typeName);
|
| - EXPECT_TRUE(ptr3);
|
| - EXPECT_TRUE(page->freelistHead);
|
| - EXPECT_EQ(3, page->numAllocatedSlots);
|
| - EXPECT_EQ(0, page->numUnprovisionedSlots);
|
| -
|
| - void* ptr4 = partitionAlloc(allocator.root(), bigSize, typeName);
|
| - EXPECT_TRUE(ptr4);
|
| - EXPECT_FALSE(page->freelistHead);
|
| - EXPECT_EQ(4, page->numAllocatedSlots);
|
| - EXPECT_EQ(0, page->numUnprovisionedSlots);
|
| -
|
| - void* ptr5 = partitionAlloc(allocator.root(), bigSize, typeName);
|
| - EXPECT_TRUE(ptr5);
|
| -
|
| - PartitionPage* page2 =
|
| - partitionPointerToPage(partitionCookieFreePointerAdjust(ptr5));
|
| - EXPECT_EQ(1, page2->numAllocatedSlots);
|
| -
|
| - // Churn things a little whilst there's a partial page freelist.
|
| - partitionFree(ptr);
|
| - ptr = partitionAlloc(allocator.root(), bigSize, typeName);
|
| - void* ptr6 = partitionAlloc(allocator.root(), bigSize, typeName);
|
| -
|
| - partitionFree(ptr);
|
| - partitionFree(ptr2);
|
| - partitionFree(ptr3);
|
| - partitionFree(ptr4);
|
| - partitionFree(ptr5);
|
| - partitionFree(ptr6);
|
| - EXPECT_NE(-1, page->emptyCacheIndex);
|
| - EXPECT_NE(-1, page2->emptyCacheIndex);
|
| - EXPECT_TRUE(page2->freelistHead);
|
| - EXPECT_EQ(0, page2->numAllocatedSlots);
|
| -
|
| - // And test a couple of sizes that do not cross kSystemPageSize with a single
|
| - // allocation.
|
| - size_t mediumSize = (kSystemPageSize / 2) - kExtraAllocSize;
|
| - bucketIdx = (mediumSize + kExtraAllocSize) >> kBucketShift;
|
| - bucket = &allocator.root()->buckets()[bucketIdx];
|
| - EXPECT_EQ(0, bucket->emptyPagesHead);
|
| -
|
| - ptr = partitionAlloc(allocator.root(), mediumSize, typeName);
|
| - EXPECT_TRUE(ptr);
|
| - page = partitionPointerToPage(partitionCookieFreePointerAdjust(ptr));
|
| - EXPECT_EQ(1, page->numAllocatedSlots);
|
| - totalSlots = (page->bucket->numSystemPagesPerSlotSpan * kSystemPageSize) /
|
| - (mediumSize + kExtraAllocSize);
|
| - size_t firstPageSlots = kSystemPageSize / (mediumSize + kExtraAllocSize);
|
| - EXPECT_EQ(2u, firstPageSlots);
|
| - EXPECT_EQ(totalSlots - firstPageSlots, page->numUnprovisionedSlots);
|
| -
|
| - partitionFree(ptr);
|
| -
|
| - size_t smallSize = (kSystemPageSize / 4) - kExtraAllocSize;
|
| - bucketIdx = (smallSize + kExtraAllocSize) >> kBucketShift;
|
| - bucket = &allocator.root()->buckets()[bucketIdx];
|
| - EXPECT_EQ(0, bucket->emptyPagesHead);
|
| -
|
| - ptr = partitionAlloc(allocator.root(), smallSize, typeName);
|
| - EXPECT_TRUE(ptr);
|
| - page = partitionPointerToPage(partitionCookieFreePointerAdjust(ptr));
|
| - EXPECT_EQ(1, page->numAllocatedSlots);
|
| - totalSlots = (page->bucket->numSystemPagesPerSlotSpan * kSystemPageSize) /
|
| - (smallSize + kExtraAllocSize);
|
| - firstPageSlots = kSystemPageSize / (smallSize + kExtraAllocSize);
|
| - EXPECT_EQ(totalSlots - firstPageSlots, page->numUnprovisionedSlots);
|
| -
|
| - partitionFree(ptr);
|
| - EXPECT_TRUE(page->freelistHead);
|
| - EXPECT_EQ(0, page->numAllocatedSlots);
|
| -
|
| - size_t verySmallSize = 32 - kExtraAllocSize;
|
| - bucketIdx = (verySmallSize + kExtraAllocSize) >> kBucketShift;
|
| - bucket = &allocator.root()->buckets()[bucketIdx];
|
| - EXPECT_EQ(0, bucket->emptyPagesHead);
|
| -
|
| - ptr = partitionAlloc(allocator.root(), verySmallSize, typeName);
|
| - EXPECT_TRUE(ptr);
|
| - page = partitionPointerToPage(partitionCookieFreePointerAdjust(ptr));
|
| - EXPECT_EQ(1, page->numAllocatedSlots);
|
| - totalSlots = (page->bucket->numSystemPagesPerSlotSpan * kSystemPageSize) /
|
| - (verySmallSize + kExtraAllocSize);
|
| - firstPageSlots = kSystemPageSize / (verySmallSize + kExtraAllocSize);
|
| - EXPECT_EQ(totalSlots - firstPageSlots, page->numUnprovisionedSlots);
|
| -
|
| - partitionFree(ptr);
|
| - EXPECT_TRUE(page->freelistHead);
|
| - EXPECT_EQ(0, page->numAllocatedSlots);
|
| -
|
| - // And try an allocation size (against the generic allocator) that is
|
| - // larger than a system page.
|
| - size_t pageAndAHalfSize =
|
| - (kSystemPageSize + (kSystemPageSize / 2)) - kExtraAllocSize;
|
| - ptr = partitionAllocGeneric(genericAllocator.root(), pageAndAHalfSize,
|
| - typeName);
|
| - EXPECT_TRUE(ptr);
|
| - page = partitionPointerToPage(partitionCookieFreePointerAdjust(ptr));
|
| - EXPECT_EQ(1, page->numAllocatedSlots);
|
| - EXPECT_TRUE(page->freelistHead);
|
| - totalSlots = (page->bucket->numSystemPagesPerSlotSpan * kSystemPageSize) /
|
| - (pageAndAHalfSize + kExtraAllocSize);
|
| - EXPECT_EQ(totalSlots - 2, page->numUnprovisionedSlots);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr);
|
| -
|
| - // And then make sure than exactly the page size only faults one page.
|
| - size_t pageSize = kSystemPageSize - kExtraAllocSize;
|
| - ptr = partitionAllocGeneric(genericAllocator.root(), pageSize, typeName);
|
| - EXPECT_TRUE(ptr);
|
| - page = partitionPointerToPage(partitionCookieFreePointerAdjust(ptr));
|
| - EXPECT_EQ(1, page->numAllocatedSlots);
|
| - EXPECT_FALSE(page->freelistHead);
|
| - totalSlots = (page->bucket->numSystemPagesPerSlotSpan * kSystemPageSize) /
|
| - (pageSize + kExtraAllocSize);
|
| - EXPECT_EQ(totalSlots - 1, page->numUnprovisionedSlots);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr);
|
| -
|
| - TestShutdown();
|
| -}
|
| -
|
| -// Test some of the fragmentation-resistant properties of the allocator.
|
| -TEST(PartitionAllocTest, PageRefilling) {
|
| - TestSetup();
|
| - PartitionBucket* bucket = &allocator.root()->buckets()[kTestBucketIndex];
|
| -
|
| - // Grab two full pages and a non-full page.
|
| - PartitionPage* page1 = GetFullPage(kTestAllocSize);
|
| - PartitionPage* page2 = GetFullPage(kTestAllocSize);
|
| - void* ptr = partitionAlloc(allocator.root(), kTestAllocSize, typeName);
|
| - EXPECT_TRUE(ptr);
|
| - EXPECT_NE(page1, bucket->activePagesHead);
|
| - EXPECT_NE(page2, bucket->activePagesHead);
|
| - PartitionPage* page =
|
| - partitionPointerToPage(partitionCookieFreePointerAdjust(ptr));
|
| - EXPECT_EQ(1, page->numAllocatedSlots);
|
| -
|
| - // Work out a pointer into page2 and free it; and then page1 and free it.
|
| - char* ptr2 =
|
| - reinterpret_cast<char*>(partitionPageToPointer(page1)) + kPointerOffset;
|
| - partitionFree(ptr2);
|
| - ptr2 =
|
| - reinterpret_cast<char*>(partitionPageToPointer(page2)) + kPointerOffset;
|
| - partitionFree(ptr2);
|
| -
|
| - // If we perform two allocations from the same bucket now, we expect to
|
| - // refill both the nearly full pages.
|
| - (void)partitionAlloc(allocator.root(), kTestAllocSize, typeName);
|
| - (void)partitionAlloc(allocator.root(), kTestAllocSize, typeName);
|
| - EXPECT_EQ(1, page->numAllocatedSlots);
|
| -
|
| - FreeFullPage(page2);
|
| - FreeFullPage(page1);
|
| - partitionFree(ptr);
|
| -
|
| - TestShutdown();
|
| -}
|
| -
|
| -// Basic tests to ensure that allocations work for partial page buckets.
|
| -TEST(PartitionAllocTest, PartialPages) {
|
| - TestSetup();
|
| -
|
| - // Find a size that is backed by a partial partition page.
|
| - size_t size = sizeof(void*);
|
| - PartitionBucket* bucket = 0;
|
| - while (size < kTestMaxAllocation) {
|
| - bucket = &allocator.root()->buckets()[size >> kBucketShift];
|
| - if (bucket->numSystemPagesPerSlotSpan % kNumSystemPagesPerPartitionPage)
|
| - break;
|
| - size += sizeof(void*);
|
| - }
|
| - EXPECT_LT(size, kTestMaxAllocation);
|
| -
|
| - PartitionPage* page1 = GetFullPage(size);
|
| - PartitionPage* page2 = GetFullPage(size);
|
| - FreeFullPage(page2);
|
| - FreeFullPage(page1);
|
| -
|
| - TestShutdown();
|
| -}
|
| -
|
| -// Test correct handling if our mapping collides with another.
|
| -TEST(PartitionAllocTest, MappingCollision) {
|
| - TestSetup();
|
| - // The -2 is because the first and last partition pages in a super page are
|
| - // guard pages.
|
| - size_t numPartitionPagesNeeded = kNumPartitionPagesPerSuperPage - 2;
|
| - std::unique_ptr<PartitionPage* []> firstSuperPagePages =
|
| - wrapArrayUnique(new PartitionPage*[numPartitionPagesNeeded]);
|
| - std::unique_ptr<PartitionPage* []> secondSuperPagePages =
|
| - wrapArrayUnique(new PartitionPage*[numPartitionPagesNeeded]);
|
| -
|
| - size_t i;
|
| - for (i = 0; i < numPartitionPagesNeeded; ++i)
|
| - firstSuperPagePages[i] = GetFullPage(kTestAllocSize);
|
| -
|
| - char* pageBase =
|
| - reinterpret_cast<char*>(partitionPageToPointer(firstSuperPagePages[0]));
|
| - EXPECT_EQ(kPartitionPageSize,
|
| - reinterpret_cast<uintptr_t>(pageBase) & kSuperPageOffsetMask);
|
| - pageBase -= kPartitionPageSize;
|
| - // Map a single system page either side of the mapping for our allocations,
|
| - // with the goal of tripping up alignment of the next mapping.
|
| - void* map1 = allocPages(pageBase - kPageAllocationGranularity,
|
| - kPageAllocationGranularity,
|
| - kPageAllocationGranularity, PageInaccessible);
|
| - EXPECT_TRUE(map1);
|
| - void* map2 = allocPages(pageBase + kSuperPageSize, kPageAllocationGranularity,
|
| - kPageAllocationGranularity, PageInaccessible);
|
| - EXPECT_TRUE(map2);
|
| -
|
| - for (i = 0; i < numPartitionPagesNeeded; ++i)
|
| - secondSuperPagePages[i] = GetFullPage(kTestAllocSize);
|
| -
|
| - freePages(map1, kPageAllocationGranularity);
|
| - freePages(map2, kPageAllocationGranularity);
|
| -
|
| - pageBase =
|
| - reinterpret_cast<char*>(partitionPageToPointer(secondSuperPagePages[0]));
|
| - EXPECT_EQ(kPartitionPageSize,
|
| - reinterpret_cast<uintptr_t>(pageBase) & kSuperPageOffsetMask);
|
| - pageBase -= kPartitionPageSize;
|
| - // Map a single system page either side of the mapping for our allocations,
|
| - // with the goal of tripping up alignment of the next mapping.
|
| - map1 = allocPages(pageBase - kPageAllocationGranularity,
|
| - kPageAllocationGranularity, kPageAllocationGranularity,
|
| - PageAccessible);
|
| - EXPECT_TRUE(map1);
|
| - map2 = allocPages(pageBase + kSuperPageSize, kPageAllocationGranularity,
|
| - kPageAllocationGranularity, PageAccessible);
|
| - EXPECT_TRUE(map2);
|
| - setSystemPagesInaccessible(map1, kPageAllocationGranularity);
|
| - setSystemPagesInaccessible(map2, kPageAllocationGranularity);
|
| -
|
| - PartitionPage* pageInThirdSuperPage = GetFullPage(kTestAllocSize);
|
| - freePages(map1, kPageAllocationGranularity);
|
| - freePages(map2, kPageAllocationGranularity);
|
| -
|
| - EXPECT_EQ(0u, reinterpret_cast<uintptr_t>(
|
| - partitionPageToPointer(pageInThirdSuperPage)) &
|
| - kPartitionPageOffsetMask);
|
| -
|
| - // And make sure we really did get a page in a new superpage.
|
| - EXPECT_NE(reinterpret_cast<uintptr_t>(
|
| - partitionPageToPointer(firstSuperPagePages[0])) &
|
| - kSuperPageBaseMask,
|
| - reinterpret_cast<uintptr_t>(
|
| - partitionPageToPointer(pageInThirdSuperPage)) &
|
| - kSuperPageBaseMask);
|
| - EXPECT_NE(reinterpret_cast<uintptr_t>(
|
| - partitionPageToPointer(secondSuperPagePages[0])) &
|
| - kSuperPageBaseMask,
|
| - reinterpret_cast<uintptr_t>(
|
| - partitionPageToPointer(pageInThirdSuperPage)) &
|
| - kSuperPageBaseMask);
|
| -
|
| - FreeFullPage(pageInThirdSuperPage);
|
| - for (i = 0; i < numPartitionPagesNeeded; ++i) {
|
| - FreeFullPage(firstSuperPagePages[i]);
|
| - FreeFullPage(secondSuperPagePages[i]);
|
| - }
|
| -
|
| - TestShutdown();
|
| -}
|
| -
|
| -// Tests that pages in the free page cache do get freed as appropriate.
|
| -TEST(PartitionAllocTest, FreeCache) {
|
| - TestSetup();
|
| -
|
| - EXPECT_EQ(0U, allocator.root()->totalSizeOfCommittedPages);
|
| -
|
| - size_t bigSize = allocator.root()->maxAllocation - kExtraAllocSize;
|
| - size_t bucketIdx = (bigSize + kExtraAllocSize) >> kBucketShift;
|
| - PartitionBucket* bucket = &allocator.root()->buckets()[bucketIdx];
|
| -
|
| - void* ptr = partitionAlloc(allocator.root(), bigSize, typeName);
|
| - EXPECT_TRUE(ptr);
|
| - PartitionPage* page =
|
| - partitionPointerToPage(partitionCookieFreePointerAdjust(ptr));
|
| - EXPECT_EQ(0, bucket->emptyPagesHead);
|
| - EXPECT_EQ(1, page->numAllocatedSlots);
|
| - EXPECT_EQ(kPartitionPageSize, allocator.root()->totalSizeOfCommittedPages);
|
| - partitionFree(ptr);
|
| - EXPECT_EQ(0, page->numAllocatedSlots);
|
| - EXPECT_NE(-1, page->emptyCacheIndex);
|
| - EXPECT_TRUE(page->freelistHead);
|
| -
|
| - CycleFreeCache(kTestAllocSize);
|
| -
|
| - // Flushing the cache should have really freed the unused page.
|
| - EXPECT_FALSE(page->freelistHead);
|
| - EXPECT_EQ(-1, page->emptyCacheIndex);
|
| - EXPECT_EQ(0, page->numAllocatedSlots);
|
| - PartitionBucket* cycleFreeCacheBucket =
|
| - &allocator.root()->buckets()[kTestBucketIndex];
|
| - EXPECT_EQ(cycleFreeCacheBucket->numSystemPagesPerSlotSpan * kSystemPageSize,
|
| - allocator.root()->totalSizeOfCommittedPages);
|
| -
|
| - // Check that an allocation works ok whilst in this state (a free'd page
|
| - // as the active pages head).
|
| - ptr = partitionAlloc(allocator.root(), bigSize, typeName);
|
| - EXPECT_FALSE(bucket->emptyPagesHead);
|
| - partitionFree(ptr);
|
| -
|
| - // Also check that a page that is bouncing immediately between empty and
|
| - // used does not get freed.
|
| - for (size_t i = 0; i < kMaxFreeableSpans * 2; ++i) {
|
| - ptr = partitionAlloc(allocator.root(), bigSize, typeName);
|
| - EXPECT_TRUE(page->freelistHead);
|
| - partitionFree(ptr);
|
| - EXPECT_TRUE(page->freelistHead);
|
| - }
|
| - EXPECT_EQ(kPartitionPageSize, allocator.root()->totalSizeOfCommittedPages);
|
| - TestShutdown();
|
| -}
|
| -
|
| -// Tests for a bug we had with losing references to free pages.
|
| -TEST(PartitionAllocTest, LostFreePagesBug) {
|
| - TestSetup();
|
| -
|
| - size_t size = kPartitionPageSize - kExtraAllocSize;
|
| -
|
| - void* ptr = partitionAllocGeneric(genericAllocator.root(), size, typeName);
|
| - EXPECT_TRUE(ptr);
|
| - void* ptr2 = partitionAllocGeneric(genericAllocator.root(), size, typeName);
|
| - EXPECT_TRUE(ptr2);
|
| -
|
| - PartitionPage* page =
|
| - partitionPointerToPage(partitionCookieFreePointerAdjust(ptr));
|
| - PartitionPage* page2 =
|
| - partitionPointerToPage(partitionCookieFreePointerAdjust(ptr2));
|
| - PartitionBucket* bucket = page->bucket;
|
| -
|
| - EXPECT_EQ(0, bucket->emptyPagesHead);
|
| - EXPECT_EQ(-1, page->numAllocatedSlots);
|
| - EXPECT_EQ(1, page2->numAllocatedSlots);
|
| -
|
| - partitionFreeGeneric(genericAllocator.root(), ptr);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr2);
|
| -
|
| - EXPECT_TRUE(bucket->emptyPagesHead);
|
| - EXPECT_TRUE(bucket->emptyPagesHead->nextPage);
|
| - EXPECT_EQ(0, page->numAllocatedSlots);
|
| - EXPECT_EQ(0, page2->numAllocatedSlots);
|
| - EXPECT_TRUE(page->freelistHead);
|
| - EXPECT_TRUE(page2->freelistHead);
|
| -
|
| - CycleGenericFreeCache(kTestAllocSize);
|
| -
|
| - EXPECT_FALSE(page->freelistHead);
|
| - EXPECT_FALSE(page2->freelistHead);
|
| -
|
| - EXPECT_TRUE(bucket->emptyPagesHead);
|
| - EXPECT_TRUE(bucket->emptyPagesHead->nextPage);
|
| - EXPECT_EQ(&PartitionRootGeneric::gSeedPage, bucket->activePagesHead);
|
| -
|
| - // At this moment, we have two decommitted pages, on the empty list.
|
| - ptr = partitionAllocGeneric(genericAllocator.root(), size, typeName);
|
| - EXPECT_TRUE(ptr);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr);
|
| -
|
| - EXPECT_EQ(&PartitionRootGeneric::gSeedPage, bucket->activePagesHead);
|
| - EXPECT_TRUE(bucket->emptyPagesHead);
|
| - EXPECT_TRUE(bucket->decommittedPagesHead);
|
| -
|
| - CycleGenericFreeCache(kTestAllocSize);
|
| -
|
| - // We're now set up to trigger a historical bug by scanning over the active
|
| - // pages list. The current code gets into a different state, but we'll keep
|
| - // the test as being an interesting corner case.
|
| - ptr = partitionAllocGeneric(genericAllocator.root(), size, typeName);
|
| - EXPECT_TRUE(ptr);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr);
|
| -
|
| - EXPECT_TRUE(bucket->activePagesHead);
|
| - EXPECT_TRUE(bucket->emptyPagesHead);
|
| - EXPECT_TRUE(bucket->decommittedPagesHead);
|
| -
|
| - TestShutdown();
|
| -}
|
| -
|
| -#if !CPU(64BIT) || OS(POSIX)
|
| -
|
| -static void DoReturnNullTest(size_t allocSize) {
|
| - TestSetup();
|
| -
|
| - EXPECT_TRUE(SetAddressSpaceLimit());
|
| -
|
| - // Work out the number of allocations for 6 GB of memory.
|
| - const int numAllocations = (6 * 1024 * 1024) / (allocSize / 1024);
|
| -
|
| - void** ptrs = reinterpret_cast<void**>(partitionAllocGeneric(
|
| - genericAllocator.root(), numAllocations * sizeof(void*), typeName));
|
| - int i;
|
| -
|
| - for (i = 0; i < numAllocations; ++i) {
|
| - ptrs[i] = partitionAllocGenericFlags(
|
| - genericAllocator.root(), PartitionAllocReturnNull, allocSize, typeName);
|
| - if (!i)
|
| - EXPECT_TRUE(ptrs[0]);
|
| - if (!ptrs[i]) {
|
| - ptrs[i] = partitionAllocGenericFlags(genericAllocator.root(),
|
| - PartitionAllocReturnNull, allocSize,
|
| - typeName);
|
| - EXPECT_FALSE(ptrs[i]);
|
| - break;
|
| - }
|
| - }
|
| -
|
| - // We shouldn't succeed in allocating all 6 GB of memory. If we do, then
|
| - // we're not actually testing anything here.
|
| - EXPECT_LT(i, numAllocations);
|
| -
|
| - // Free, reallocate and free again each block we allocated. We do this to
|
| - // check that freeing memory also works correctly after a failed allocation.
|
| - for (--i; i >= 0; --i) {
|
| - partitionFreeGeneric(genericAllocator.root(), ptrs[i]);
|
| - ptrs[i] = partitionAllocGenericFlags(
|
| - genericAllocator.root(), PartitionAllocReturnNull, allocSize, typeName);
|
| - EXPECT_TRUE(ptrs[i]);
|
| - partitionFreeGeneric(genericAllocator.root(), ptrs[i]);
|
| - }
|
| -
|
| - partitionFreeGeneric(genericAllocator.root(), ptrs);
|
| -
|
| - EXPECT_TRUE(ClearAddressSpaceLimit());
|
| -
|
| - TestShutdown();
|
| -}
|
| -
|
| -// Tests that if an allocation fails in "return null" mode, repeating it doesn't
|
| -// crash, and still returns null. The test tries to allocate 6 GB of memory in
|
| -// 512 kB blocks. On 64-bit POSIX systems, the address space is limited to 4 GB
|
| -// using setrlimit() first.
|
| -#if OS(MACOSX)
|
| -#define MAYBE_RepeatedReturnNull DISABLED_RepeatedReturnNull
|
| -#else
|
| -#define MAYBE_RepeatedReturnNull RepeatedReturnNull
|
| -#endif
|
| -TEST(PartitionAllocTest, MAYBE_RepeatedReturnNull) {
|
| - // A single-slot but non-direct-mapped allocation size.
|
| - DoReturnNullTest(512 * 1024);
|
| -}
|
| -
|
| -// Another "return null" test but for larger, direct-mapped allocations.
|
| -#if OS(MACOSX)
|
| -#define MAYBE_RepeatedReturnNullDirect DISABLED_RepeatedReturnNullDirect
|
| -#else
|
| -#define MAYBE_RepeatedReturnNullDirect RepeatedReturnNullDirect
|
| -#endif
|
| -TEST(PartitionAllocTest, MAYBE_RepeatedReturnNullDirect) {
|
| - // A direct-mapped allocation size.
|
| - DoReturnNullTest(256 * 1024 * 1024);
|
| -}
|
| -
|
| -#endif // !CPU(64BIT) || OS(POSIX)
|
| -
|
| -#if !OS(ANDROID)
|
| -
|
| -// Make sure that malloc(-1) dies.
|
| -// In the past, we had an integer overflow that would alias malloc(-1) to
|
| -// malloc(0), which is not good.
|
| -TEST(PartitionAllocDeathTest, LargeAllocs) {
|
| - TestSetup();
|
| - // Largest alloc.
|
| - EXPECT_DEATH(partitionAllocGeneric(genericAllocator.root(),
|
| - static_cast<size_t>(-1), typeName),
|
| - "");
|
| - // And the smallest allocation we expect to die.
|
| - EXPECT_DEATH(
|
| - partitionAllocGeneric(genericAllocator.root(),
|
| - static_cast<size_t>(INT_MAX) + 1, typeName),
|
| - "");
|
| -
|
| - TestShutdown();
|
| -}
|
| -
|
| -// Check that our immediate double-free detection works.
|
| -TEST(PartitionAllocDeathTest, ImmediateDoubleFree) {
|
| - TestSetup();
|
| -
|
| - void* ptr =
|
| - partitionAllocGeneric(genericAllocator.root(), kTestAllocSize, typeName);
|
| - EXPECT_TRUE(ptr);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr);
|
| -
|
| - EXPECT_DEATH(partitionFreeGeneric(genericAllocator.root(), ptr), "");
|
| -
|
| - TestShutdown();
|
| -}
|
| -
|
| -// Check that our refcount-based double-free detection works.
|
| -TEST(PartitionAllocDeathTest, RefcountDoubleFree) {
|
| - TestSetup();
|
| -
|
| - void* ptr =
|
| - partitionAllocGeneric(genericAllocator.root(), kTestAllocSize, typeName);
|
| - EXPECT_TRUE(ptr);
|
| - void* ptr2 =
|
| - partitionAllocGeneric(genericAllocator.root(), kTestAllocSize, typeName);
|
| - EXPECT_TRUE(ptr2);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr2);
|
| - // This is not an immediate double-free so our immediate detection won't
|
| - // fire. However, it does take the "refcount" of the partition page to -1,
|
| - // which is illegal and should be trapped.
|
| - EXPECT_DEATH(partitionFreeGeneric(genericAllocator.root(), ptr), "");
|
| -
|
| - TestShutdown();
|
| -}
|
| -
|
| -// Check that guard pages are present where expected.
|
| -TEST(PartitionAllocDeathTest, GuardPages) {
|
| - TestSetup();
|
| -
|
| -// partitionAlloc adds kPartitionPageSize to the requested size
|
| -// (for metadata), and then rounds that size to kPageAllocationGranularity.
|
| -// To be able to reliably write one past a direct allocation, choose a size
|
| -// that's
|
| -// a) larger than kGenericMaxBucketed (to make the allocation direct)
|
| -// b) aligned at kPageAllocationGranularity boundaries after
|
| -// kPartitionPageSize has been added to it.
|
| -// (On 32-bit, partitionAlloc adds another kSystemPageSize to the
|
| -// allocation size before rounding, but there it marks the memory right
|
| -// after size as inaccessible, so it's fine to write 1 past the size we
|
| -// hand to partitionAlloc and we don't need to worry about allocation
|
| -// granularities.)
|
| -#define ALIGN(N, A) (((N) + (A)-1) / (A) * (A))
|
| - const int kSize = ALIGN(kGenericMaxBucketed + 1 + kPartitionPageSize,
|
| - kPageAllocationGranularity) -
|
| - kPartitionPageSize;
|
| -#undef ALIGN
|
| - static_assert(kSize > kGenericMaxBucketed,
|
| - "allocation not large enough for direct allocation");
|
| - size_t size = kSize - kExtraAllocSize;
|
| - void* ptr = partitionAllocGeneric(genericAllocator.root(), size, typeName);
|
| -
|
| - EXPECT_TRUE(ptr);
|
| - char* charPtr = reinterpret_cast<char*>(ptr) - kPointerOffset;
|
| -
|
| - EXPECT_DEATH(*(charPtr - 1) = 'A', "");
|
| - EXPECT_DEATH(*(charPtr + size + kExtraAllocSize) = 'A', "");
|
| -
|
| - partitionFreeGeneric(genericAllocator.root(), ptr);
|
| -
|
| - TestShutdown();
|
| -}
|
| -
|
| -// Check that a bad free() is caught where the free() refers to an unused
|
| -// partition page of a large allocation.
|
| -TEST(PartitionAllocDeathTest, FreeWrongPartitionPage) {
|
| - TestSetup();
|
| -
|
| - // This large size will result in a direct mapped allocation with guard
|
| - // pages at either end.
|
| - void* ptr = partitionAllocGeneric(genericAllocator.root(),
|
| - kPartitionPageSize * 2, typeName);
|
| - EXPECT_TRUE(ptr);
|
| - char* badPtr = reinterpret_cast<char*>(ptr) + kPartitionPageSize;
|
| -
|
| - EXPECT_DEATH(partitionFreeGeneric(genericAllocator.root(), badPtr), "");
|
| -
|
| - partitionFreeGeneric(genericAllocator.root(), ptr);
|
| -
|
| - TestShutdown();
|
| -}
|
| -
|
| -#endif // !OS(ANDROID)
|
| -
|
| -// Tests that partitionDumpStatsGeneric and partitionDumpStats runs without
|
| -// crashing and returns non zero values when memory is allocated.
|
| -TEST(PartitionAllocTest, DumpMemoryStats) {
|
| - TestSetup();
|
| - {
|
| - void* ptr = partitionAlloc(allocator.root(), kTestAllocSize, typeName);
|
| - MockPartitionStatsDumper mockStatsDumper;
|
| - partitionDumpStats(allocator.root(), "mock_allocator",
|
| - false /* detailed dump */, &mockStatsDumper);
|
| - EXPECT_TRUE(mockStatsDumper.IsMemoryAllocationRecorded());
|
| -
|
| - partitionFree(ptr);
|
| - }
|
| -
|
| - // This series of tests checks the active -> empty -> decommitted states.
|
| - {
|
| - void* genericPtr = partitionAllocGeneric(genericAllocator.root(),
|
| - 2048 - kExtraAllocSize, typeName);
|
| - {
|
| - MockPartitionStatsDumper mockStatsDumperGeneric;
|
| - partitionDumpStatsGeneric(
|
| - genericAllocator.root(), "mock_generic_allocator",
|
| - false /* detailed dump */, &mockStatsDumperGeneric);
|
| - EXPECT_TRUE(mockStatsDumperGeneric.IsMemoryAllocationRecorded());
|
| -
|
| - const PartitionBucketMemoryStats* stats =
|
| - mockStatsDumperGeneric.GetBucketStats(2048);
|
| - EXPECT_TRUE(stats);
|
| - EXPECT_TRUE(stats->isValid);
|
| - EXPECT_EQ(2048u, stats->bucketSlotSize);
|
| - EXPECT_EQ(2048u, stats->activeBytes);
|
| - EXPECT_EQ(kSystemPageSize, stats->residentBytes);
|
| - EXPECT_EQ(0u, stats->decommittableBytes);
|
| - EXPECT_EQ(0u, stats->discardableBytes);
|
| - EXPECT_EQ(0u, stats->numFullPages);
|
| - EXPECT_EQ(1u, stats->numActivePages);
|
| - EXPECT_EQ(0u, stats->numEmptyPages);
|
| - EXPECT_EQ(0u, stats->numDecommittedPages);
|
| - }
|
| -
|
| - partitionFreeGeneric(genericAllocator.root(), genericPtr);
|
| -
|
| - {
|
| - MockPartitionStatsDumper mockStatsDumperGeneric;
|
| - partitionDumpStatsGeneric(
|
| - genericAllocator.root(), "mock_generic_allocator",
|
| - false /* detailed dump */, &mockStatsDumperGeneric);
|
| - EXPECT_FALSE(mockStatsDumperGeneric.IsMemoryAllocationRecorded());
|
| -
|
| - const PartitionBucketMemoryStats* stats =
|
| - mockStatsDumperGeneric.GetBucketStats(2048);
|
| - EXPECT_TRUE(stats);
|
| - EXPECT_TRUE(stats->isValid);
|
| - EXPECT_EQ(2048u, stats->bucketSlotSize);
|
| - EXPECT_EQ(0u, stats->activeBytes);
|
| - EXPECT_EQ(kSystemPageSize, stats->residentBytes);
|
| - EXPECT_EQ(kSystemPageSize, stats->decommittableBytes);
|
| - EXPECT_EQ(0u, stats->discardableBytes);
|
| - EXPECT_EQ(0u, stats->numFullPages);
|
| - EXPECT_EQ(0u, stats->numActivePages);
|
| - EXPECT_EQ(1u, stats->numEmptyPages);
|
| - EXPECT_EQ(0u, stats->numDecommittedPages);
|
| - }
|
| -
|
| - CycleGenericFreeCache(kTestAllocSize);
|
| -
|
| - {
|
| - MockPartitionStatsDumper mockStatsDumperGeneric;
|
| - partitionDumpStatsGeneric(
|
| - genericAllocator.root(), "mock_generic_allocator",
|
| - false /* detailed dump */, &mockStatsDumperGeneric);
|
| - EXPECT_FALSE(mockStatsDumperGeneric.IsMemoryAllocationRecorded());
|
| -
|
| - const PartitionBucketMemoryStats* stats =
|
| - mockStatsDumperGeneric.GetBucketStats(2048);
|
| - EXPECT_TRUE(stats);
|
| - EXPECT_TRUE(stats->isValid);
|
| - EXPECT_EQ(2048u, stats->bucketSlotSize);
|
| - EXPECT_EQ(0u, stats->activeBytes);
|
| - EXPECT_EQ(0u, stats->residentBytes);
|
| - EXPECT_EQ(0u, stats->decommittableBytes);
|
| - EXPECT_EQ(0u, stats->discardableBytes);
|
| - EXPECT_EQ(0u, stats->numFullPages);
|
| - EXPECT_EQ(0u, stats->numActivePages);
|
| - EXPECT_EQ(0u, stats->numEmptyPages);
|
| - EXPECT_EQ(1u, stats->numDecommittedPages);
|
| - }
|
| - }
|
| -
|
| - // This test checks for correct empty page list accounting.
|
| - {
|
| - size_t size = kPartitionPageSize - kExtraAllocSize;
|
| - void* ptr1 = partitionAllocGeneric(genericAllocator.root(), size, typeName);
|
| - void* ptr2 = partitionAllocGeneric(genericAllocator.root(), size, typeName);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr1);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr2);
|
| -
|
| - CycleGenericFreeCache(kTestAllocSize);
|
| -
|
| - ptr1 = partitionAllocGeneric(genericAllocator.root(), size, typeName);
|
| -
|
| - {
|
| - MockPartitionStatsDumper mockStatsDumperGeneric;
|
| - partitionDumpStatsGeneric(
|
| - genericAllocator.root(), "mock_generic_allocator",
|
| - false /* detailed dump */, &mockStatsDumperGeneric);
|
| - EXPECT_TRUE(mockStatsDumperGeneric.IsMemoryAllocationRecorded());
|
| -
|
| - const PartitionBucketMemoryStats* stats =
|
| - mockStatsDumperGeneric.GetBucketStats(kPartitionPageSize);
|
| - EXPECT_TRUE(stats);
|
| - EXPECT_TRUE(stats->isValid);
|
| - EXPECT_EQ(kPartitionPageSize, stats->bucketSlotSize);
|
| - EXPECT_EQ(kPartitionPageSize, stats->activeBytes);
|
| - EXPECT_EQ(kPartitionPageSize, stats->residentBytes);
|
| - EXPECT_EQ(0u, stats->decommittableBytes);
|
| - EXPECT_EQ(0u, stats->discardableBytes);
|
| - EXPECT_EQ(1u, stats->numFullPages);
|
| - EXPECT_EQ(0u, stats->numActivePages);
|
| - EXPECT_EQ(0u, stats->numEmptyPages);
|
| - EXPECT_EQ(1u, stats->numDecommittedPages);
|
| - }
|
| - partitionFreeGeneric(genericAllocator.root(), ptr1);
|
| - }
|
| -
|
| - // This test checks for correct direct mapped accounting.
|
| - {
|
| - size_t sizeSmaller = kGenericMaxBucketed + 1;
|
| - size_t sizeBigger = (kGenericMaxBucketed * 2) + 1;
|
| - size_t realSizeSmaller =
|
| - (sizeSmaller + kSystemPageOffsetMask) & kSystemPageBaseMask;
|
| - size_t realSizeBigger =
|
| - (sizeBigger + kSystemPageOffsetMask) & kSystemPageBaseMask;
|
| - void* ptr =
|
| - partitionAllocGeneric(genericAllocator.root(), sizeSmaller, typeName);
|
| - void* ptr2 =
|
| - partitionAllocGeneric(genericAllocator.root(), sizeBigger, typeName);
|
| -
|
| - {
|
| - MockPartitionStatsDumper mockStatsDumperGeneric;
|
| - partitionDumpStatsGeneric(
|
| - genericAllocator.root(), "mock_generic_allocator",
|
| - false /* detailed dump */, &mockStatsDumperGeneric);
|
| - EXPECT_TRUE(mockStatsDumperGeneric.IsMemoryAllocationRecorded());
|
| -
|
| - const PartitionBucketMemoryStats* stats =
|
| - mockStatsDumperGeneric.GetBucketStats(realSizeSmaller);
|
| - EXPECT_TRUE(stats);
|
| - EXPECT_TRUE(stats->isValid);
|
| - EXPECT_TRUE(stats->isDirectMap);
|
| - EXPECT_EQ(realSizeSmaller, stats->bucketSlotSize);
|
| - EXPECT_EQ(realSizeSmaller, stats->activeBytes);
|
| - EXPECT_EQ(realSizeSmaller, stats->residentBytes);
|
| - EXPECT_EQ(0u, stats->decommittableBytes);
|
| - EXPECT_EQ(0u, stats->discardableBytes);
|
| - EXPECT_EQ(1u, stats->numFullPages);
|
| - EXPECT_EQ(0u, stats->numActivePages);
|
| - EXPECT_EQ(0u, stats->numEmptyPages);
|
| - EXPECT_EQ(0u, stats->numDecommittedPages);
|
| -
|
| - stats = mockStatsDumperGeneric.GetBucketStats(realSizeBigger);
|
| - EXPECT_TRUE(stats);
|
| - EXPECT_TRUE(stats->isValid);
|
| - EXPECT_TRUE(stats->isDirectMap);
|
| - EXPECT_EQ(realSizeBigger, stats->bucketSlotSize);
|
| - EXPECT_EQ(realSizeBigger, stats->activeBytes);
|
| - EXPECT_EQ(realSizeBigger, stats->residentBytes);
|
| - EXPECT_EQ(0u, stats->decommittableBytes);
|
| - EXPECT_EQ(0u, stats->discardableBytes);
|
| - EXPECT_EQ(1u, stats->numFullPages);
|
| - EXPECT_EQ(0u, stats->numActivePages);
|
| - EXPECT_EQ(0u, stats->numEmptyPages);
|
| - EXPECT_EQ(0u, stats->numDecommittedPages);
|
| - }
|
| -
|
| - partitionFreeGeneric(genericAllocator.root(), ptr2);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr);
|
| -
|
| - // Whilst we're here, allocate again and free with different ordering
|
| - // to give a workout to our linked list code.
|
| - ptr = partitionAllocGeneric(genericAllocator.root(), sizeSmaller, typeName);
|
| - ptr2 = partitionAllocGeneric(genericAllocator.root(), sizeBigger, typeName);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr2);
|
| - }
|
| -
|
| - // This test checks large-but-not-quite-direct allocations.
|
| - {
|
| - void* ptr =
|
| - partitionAllocGeneric(genericAllocator.root(), 65536 + 1, typeName);
|
| -
|
| - {
|
| - MockPartitionStatsDumper mockStatsDumperGeneric;
|
| - partitionDumpStatsGeneric(
|
| - genericAllocator.root(), "mock_generic_allocator",
|
| - false /* detailed dump */, &mockStatsDumperGeneric);
|
| - EXPECT_TRUE(mockStatsDumperGeneric.IsMemoryAllocationRecorded());
|
| -
|
| - size_t slotSize = 65536 + (65536 / kGenericNumBucketsPerOrder);
|
| - const PartitionBucketMemoryStats* stats =
|
| - mockStatsDumperGeneric.GetBucketStats(slotSize);
|
| - EXPECT_TRUE(stats);
|
| - EXPECT_TRUE(stats->isValid);
|
| - EXPECT_FALSE(stats->isDirectMap);
|
| - EXPECT_EQ(slotSize, stats->bucketSlotSize);
|
| - EXPECT_EQ(65536u + 1 + kExtraAllocSize, stats->activeBytes);
|
| - EXPECT_EQ(slotSize, stats->residentBytes);
|
| - EXPECT_EQ(0u, stats->decommittableBytes);
|
| - EXPECT_EQ(kSystemPageSize, stats->discardableBytes);
|
| - EXPECT_EQ(1u, stats->numFullPages);
|
| - EXPECT_EQ(0u, stats->numActivePages);
|
| - EXPECT_EQ(0u, stats->numEmptyPages);
|
| - EXPECT_EQ(0u, stats->numDecommittedPages);
|
| - }
|
| -
|
| - partitionFreeGeneric(genericAllocator.root(), ptr);
|
| -
|
| - {
|
| - MockPartitionStatsDumper mockStatsDumperGeneric;
|
| - partitionDumpStatsGeneric(
|
| - genericAllocator.root(), "mock_generic_allocator",
|
| - false /* detailed dump */, &mockStatsDumperGeneric);
|
| - EXPECT_FALSE(mockStatsDumperGeneric.IsMemoryAllocationRecorded());
|
| -
|
| - size_t slotSize = 65536 + (65536 / kGenericNumBucketsPerOrder);
|
| - const PartitionBucketMemoryStats* stats =
|
| - mockStatsDumperGeneric.GetBucketStats(slotSize);
|
| - EXPECT_TRUE(stats);
|
| - EXPECT_TRUE(stats->isValid);
|
| - EXPECT_FALSE(stats->isDirectMap);
|
| - EXPECT_EQ(slotSize, stats->bucketSlotSize);
|
| - EXPECT_EQ(0u, stats->activeBytes);
|
| - EXPECT_EQ(slotSize, stats->residentBytes);
|
| - EXPECT_EQ(slotSize, stats->decommittableBytes);
|
| - EXPECT_EQ(0u, stats->numFullPages);
|
| - EXPECT_EQ(0u, stats->numActivePages);
|
| - EXPECT_EQ(1u, stats->numEmptyPages);
|
| - EXPECT_EQ(0u, stats->numDecommittedPages);
|
| - }
|
| -
|
| - void* ptr2 = partitionAllocGeneric(genericAllocator.root(),
|
| - 65536 + kSystemPageSize + 1, typeName);
|
| - EXPECT_EQ(ptr, ptr2);
|
| -
|
| - {
|
| - MockPartitionStatsDumper mockStatsDumperGeneric;
|
| - partitionDumpStatsGeneric(
|
| - genericAllocator.root(), "mock_generic_allocator",
|
| - false /* detailed dump */, &mockStatsDumperGeneric);
|
| - EXPECT_TRUE(mockStatsDumperGeneric.IsMemoryAllocationRecorded());
|
| -
|
| - size_t slotSize = 65536 + (65536 / kGenericNumBucketsPerOrder);
|
| - const PartitionBucketMemoryStats* stats =
|
| - mockStatsDumperGeneric.GetBucketStats(slotSize);
|
| - EXPECT_TRUE(stats);
|
| - EXPECT_TRUE(stats->isValid);
|
| - EXPECT_FALSE(stats->isDirectMap);
|
| - EXPECT_EQ(slotSize, stats->bucketSlotSize);
|
| - EXPECT_EQ(65536u + kSystemPageSize + 1 + kExtraAllocSize,
|
| - stats->activeBytes);
|
| - EXPECT_EQ(slotSize, stats->residentBytes);
|
| - EXPECT_EQ(0u, stats->decommittableBytes);
|
| - EXPECT_EQ(0u, stats->discardableBytes);
|
| - EXPECT_EQ(1u, stats->numFullPages);
|
| - EXPECT_EQ(0u, stats->numActivePages);
|
| - EXPECT_EQ(0u, stats->numEmptyPages);
|
| - EXPECT_EQ(0u, stats->numDecommittedPages);
|
| - }
|
| -
|
| - partitionFreeGeneric(genericAllocator.root(), ptr2);
|
| - }
|
| -
|
| - TestShutdown();
|
| -}
|
| -
|
| -// Tests the API to purge freeable memory.
|
| -TEST(PartitionAllocTest, Purge) {
|
| - TestSetup();
|
| -
|
| - char* ptr = reinterpret_cast<char*>(partitionAllocGeneric(
|
| - genericAllocator.root(), 2048 - kExtraAllocSize, typeName));
|
| - partitionFreeGeneric(genericAllocator.root(), ptr);
|
| - {
|
| - MockPartitionStatsDumper mockStatsDumperGeneric;
|
| - partitionDumpStatsGeneric(genericAllocator.root(), "mock_generic_allocator",
|
| - false /* detailed dump */,
|
| - &mockStatsDumperGeneric);
|
| - EXPECT_FALSE(mockStatsDumperGeneric.IsMemoryAllocationRecorded());
|
| -
|
| - const PartitionBucketMemoryStats* stats =
|
| - mockStatsDumperGeneric.GetBucketStats(2048);
|
| - EXPECT_TRUE(stats);
|
| - EXPECT_TRUE(stats->isValid);
|
| - EXPECT_EQ(kSystemPageSize, stats->decommittableBytes);
|
| - EXPECT_EQ(kSystemPageSize, stats->residentBytes);
|
| - }
|
| - partitionPurgeMemoryGeneric(genericAllocator.root(),
|
| - PartitionPurgeDecommitEmptyPages);
|
| - {
|
| - MockPartitionStatsDumper mockStatsDumperGeneric;
|
| - partitionDumpStatsGeneric(genericAllocator.root(), "mock_generic_allocator",
|
| - false /* detailed dump */,
|
| - &mockStatsDumperGeneric);
|
| - EXPECT_FALSE(mockStatsDumperGeneric.IsMemoryAllocationRecorded());
|
| -
|
| - const PartitionBucketMemoryStats* stats =
|
| - mockStatsDumperGeneric.GetBucketStats(2048);
|
| - EXPECT_TRUE(stats);
|
| - EXPECT_TRUE(stats->isValid);
|
| - EXPECT_EQ(0u, stats->decommittableBytes);
|
| - EXPECT_EQ(0u, stats->residentBytes);
|
| - }
|
| - // Calling purge again here is a good way of testing we didn't mess up the
|
| - // state of the free cache ring.
|
| - partitionPurgeMemoryGeneric(genericAllocator.root(),
|
| - PartitionPurgeDecommitEmptyPages);
|
| -
|
| - char* bigPtr = reinterpret_cast<char*>(
|
| - partitionAllocGeneric(genericAllocator.root(), 256 * 1024, typeName));
|
| - partitionFreeGeneric(genericAllocator.root(), bigPtr);
|
| - partitionPurgeMemoryGeneric(genericAllocator.root(),
|
| - PartitionPurgeDecommitEmptyPages);
|
| -
|
| - CheckPageInCore(ptr - kPointerOffset, false);
|
| - CheckPageInCore(bigPtr - kPointerOffset, false);
|
| -
|
| - TestShutdown();
|
| -}
|
| -
|
| -// Tests that we prefer to allocate into a non-empty partition page over an
|
| -// empty one. This is an important aspect of minimizing memory usage for some
|
| -// allocation sizes, particularly larger ones.
|
| -TEST(PartitionAllocTest, PreferActiveOverEmpty) {
|
| - TestSetup();
|
| -
|
| - size_t size = (kSystemPageSize * 2) - kExtraAllocSize;
|
| - // Allocate 3 full slot spans worth of 8192-byte allocations.
|
| - // Each slot span for this size is 16384 bytes, or 1 partition page and 2
|
| - // slots.
|
| - void* ptr1 = partitionAllocGeneric(genericAllocator.root(), size, typeName);
|
| - void* ptr2 = partitionAllocGeneric(genericAllocator.root(), size, typeName);
|
| - void* ptr3 = partitionAllocGeneric(genericAllocator.root(), size, typeName);
|
| - void* ptr4 = partitionAllocGeneric(genericAllocator.root(), size, typeName);
|
| - void* ptr5 = partitionAllocGeneric(genericAllocator.root(), size, typeName);
|
| - void* ptr6 = partitionAllocGeneric(genericAllocator.root(), size, typeName);
|
| -
|
| - PartitionPage* page1 =
|
| - partitionPointerToPage(partitionCookieFreePointerAdjust(ptr1));
|
| - PartitionPage* page2 =
|
| - partitionPointerToPage(partitionCookieFreePointerAdjust(ptr3));
|
| - PartitionPage* page3 =
|
| - partitionPointerToPage(partitionCookieFreePointerAdjust(ptr6));
|
| - EXPECT_NE(page1, page2);
|
| - EXPECT_NE(page2, page3);
|
| - PartitionBucket* bucket = page1->bucket;
|
| - EXPECT_EQ(page3, bucket->activePagesHead);
|
| -
|
| - // Free up the 2nd slot in each slot span.
|
| - // This leaves the active list containing 3 pages, each with 1 used and 1
|
| - // free slot. The active page will be the one containing ptr1.
|
| - partitionFreeGeneric(genericAllocator.root(), ptr6);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr4);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr2);
|
| - EXPECT_EQ(page1, bucket->activePagesHead);
|
| -
|
| - // Empty the middle page in the active list.
|
| - partitionFreeGeneric(genericAllocator.root(), ptr3);
|
| - EXPECT_EQ(page1, bucket->activePagesHead);
|
| -
|
| - // Empty the the first page in the active list -- also the current page.
|
| - partitionFreeGeneric(genericAllocator.root(), ptr1);
|
| -
|
| - // A good choice here is to re-fill the third page since the first two are
|
| - // empty. We used to fail that.
|
| - void* ptr7 = partitionAllocGeneric(genericAllocator.root(), size, typeName);
|
| - EXPECT_EQ(ptr6, ptr7);
|
| - EXPECT_EQ(page3, bucket->activePagesHead);
|
| -
|
| - partitionFreeGeneric(genericAllocator.root(), ptr5);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr7);
|
| -
|
| - TestShutdown();
|
| -}
|
| -
|
| -// Tests the API to purge discardable memory.
|
| -TEST(PartitionAllocTest, PurgeDiscardable) {
|
| - TestSetup();
|
| -
|
| - // Free the second of two 4096 byte allocations and then purge.
|
| - {
|
| - void* ptr1 = partitionAllocGeneric(
|
| - genericAllocator.root(), kSystemPageSize - kExtraAllocSize, typeName);
|
| - char* ptr2 = reinterpret_cast<char*>(partitionAllocGeneric(
|
| - genericAllocator.root(), kSystemPageSize - kExtraAllocSize, typeName));
|
| - partitionFreeGeneric(genericAllocator.root(), ptr2);
|
| - PartitionPage* page =
|
| - partitionPointerToPage(partitionCookieFreePointerAdjust(ptr1));
|
| - EXPECT_EQ(2u, page->numUnprovisionedSlots);
|
| - {
|
| - MockPartitionStatsDumper mockStatsDumperGeneric;
|
| - partitionDumpStatsGeneric(
|
| - genericAllocator.root(), "mock_generic_allocator",
|
| - false /* detailed dump */, &mockStatsDumperGeneric);
|
| - EXPECT_TRUE(mockStatsDumperGeneric.IsMemoryAllocationRecorded());
|
| -
|
| - const PartitionBucketMemoryStats* stats =
|
| - mockStatsDumperGeneric.GetBucketStats(kSystemPageSize);
|
| - EXPECT_TRUE(stats);
|
| - EXPECT_TRUE(stats->isValid);
|
| - EXPECT_EQ(0u, stats->decommittableBytes);
|
| - EXPECT_EQ(kSystemPageSize, stats->discardableBytes);
|
| - EXPECT_EQ(kSystemPageSize, stats->activeBytes);
|
| - EXPECT_EQ(2 * kSystemPageSize, stats->residentBytes);
|
| - }
|
| - CheckPageInCore(ptr2 - kPointerOffset, true);
|
| - partitionPurgeMemoryGeneric(genericAllocator.root(),
|
| - PartitionPurgeDiscardUnusedSystemPages);
|
| - CheckPageInCore(ptr2 - kPointerOffset, false);
|
| - EXPECT_EQ(3u, page->numUnprovisionedSlots);
|
| -
|
| - partitionFreeGeneric(genericAllocator.root(), ptr1);
|
| - }
|
| - // Free the first of two 4096 byte allocations and then purge.
|
| - {
|
| - char* ptr1 = reinterpret_cast<char*>(partitionAllocGeneric(
|
| - genericAllocator.root(), kSystemPageSize - kExtraAllocSize, typeName));
|
| - void* ptr2 = partitionAllocGeneric(
|
| - genericAllocator.root(), kSystemPageSize - kExtraAllocSize, typeName);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr1);
|
| - {
|
| - MockPartitionStatsDumper mockStatsDumperGeneric;
|
| - partitionDumpStatsGeneric(
|
| - genericAllocator.root(), "mock_generic_allocator",
|
| - false /* detailed dump */, &mockStatsDumperGeneric);
|
| - EXPECT_TRUE(mockStatsDumperGeneric.IsMemoryAllocationRecorded());
|
| -
|
| - const PartitionBucketMemoryStats* stats =
|
| - mockStatsDumperGeneric.GetBucketStats(kSystemPageSize);
|
| - EXPECT_TRUE(stats);
|
| - EXPECT_TRUE(stats->isValid);
|
| - EXPECT_EQ(0u, stats->decommittableBytes);
|
| - EXPECT_EQ(kSystemPageSize, stats->discardableBytes);
|
| - EXPECT_EQ(kSystemPageSize, stats->activeBytes);
|
| - EXPECT_EQ(2 * kSystemPageSize, stats->residentBytes);
|
| - }
|
| - CheckPageInCore(ptr1 - kPointerOffset, true);
|
| - partitionPurgeMemoryGeneric(genericAllocator.root(),
|
| - PartitionPurgeDiscardUnusedSystemPages);
|
| - CheckPageInCore(ptr1 - kPointerOffset, false);
|
| -
|
| - partitionFreeGeneric(genericAllocator.root(), ptr2);
|
| - }
|
| - {
|
| - char* ptr1 = reinterpret_cast<char*>(partitionAllocGeneric(
|
| - genericAllocator.root(), 9216 - kExtraAllocSize, typeName));
|
| - void* ptr2 = partitionAllocGeneric(genericAllocator.root(),
|
| - 9216 - kExtraAllocSize, typeName);
|
| - void* ptr3 = partitionAllocGeneric(genericAllocator.root(),
|
| - 9216 - kExtraAllocSize, typeName);
|
| - void* ptr4 = partitionAllocGeneric(genericAllocator.root(),
|
| - 9216 - kExtraAllocSize, typeName);
|
| - memset(ptr1, 'A', 9216 - kExtraAllocSize);
|
| - memset(ptr2, 'A', 9216 - kExtraAllocSize);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr2);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr1);
|
| - {
|
| - MockPartitionStatsDumper mockStatsDumperGeneric;
|
| - partitionDumpStatsGeneric(
|
| - genericAllocator.root(), "mock_generic_allocator",
|
| - false /* detailed dump */, &mockStatsDumperGeneric);
|
| - EXPECT_TRUE(mockStatsDumperGeneric.IsMemoryAllocationRecorded());
|
| -
|
| - const PartitionBucketMemoryStats* stats =
|
| - mockStatsDumperGeneric.GetBucketStats(9216);
|
| - EXPECT_TRUE(stats);
|
| - EXPECT_TRUE(stats->isValid);
|
| - EXPECT_EQ(0u, stats->decommittableBytes);
|
| - EXPECT_EQ(2 * kSystemPageSize, stats->discardableBytes);
|
| - EXPECT_EQ(9216u * 2, stats->activeBytes);
|
| - EXPECT_EQ(9 * kSystemPageSize, stats->residentBytes);
|
| - }
|
| - CheckPageInCore(ptr1 - kPointerOffset, true);
|
| - CheckPageInCore(ptr1 - kPointerOffset + kSystemPageSize, true);
|
| - CheckPageInCore(ptr1 - kPointerOffset + (kSystemPageSize * 2), true);
|
| - CheckPageInCore(ptr1 - kPointerOffset + (kSystemPageSize * 3), true);
|
| - CheckPageInCore(ptr1 - kPointerOffset + (kSystemPageSize * 4), true);
|
| - partitionPurgeMemoryGeneric(genericAllocator.root(),
|
| - PartitionPurgeDiscardUnusedSystemPages);
|
| - CheckPageInCore(ptr1 - kPointerOffset, true);
|
| - CheckPageInCore(ptr1 - kPointerOffset + kSystemPageSize, false);
|
| - CheckPageInCore(ptr1 - kPointerOffset + (kSystemPageSize * 2), true);
|
| - CheckPageInCore(ptr1 - kPointerOffset + (kSystemPageSize * 3), false);
|
| - CheckPageInCore(ptr1 - kPointerOffset + (kSystemPageSize * 4), true);
|
| -
|
| - partitionFreeGeneric(genericAllocator.root(), ptr3);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr4);
|
| - }
|
| - {
|
| - char* ptr1 = reinterpret_cast<char*>(partitionAllocGeneric(
|
| - genericAllocator.root(), (64 * kSystemPageSize) - kExtraAllocSize,
|
| - typeName));
|
| - memset(ptr1, 'A', (64 * kSystemPageSize) - kExtraAllocSize);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr1);
|
| - ptr1 = reinterpret_cast<char*>(partitionAllocGeneric(
|
| - genericAllocator.root(), (61 * kSystemPageSize) - kExtraAllocSize,
|
| - typeName));
|
| - {
|
| - MockPartitionStatsDumper mockStatsDumperGeneric;
|
| - partitionDumpStatsGeneric(
|
| - genericAllocator.root(), "mock_generic_allocator",
|
| - false /* detailed dump */, &mockStatsDumperGeneric);
|
| - EXPECT_TRUE(mockStatsDumperGeneric.IsMemoryAllocationRecorded());
|
| -
|
| - const PartitionBucketMemoryStats* stats =
|
| - mockStatsDumperGeneric.GetBucketStats(64 * kSystemPageSize);
|
| - EXPECT_TRUE(stats);
|
| - EXPECT_TRUE(stats->isValid);
|
| - EXPECT_EQ(0u, stats->decommittableBytes);
|
| - EXPECT_EQ(3 * kSystemPageSize, stats->discardableBytes);
|
| - EXPECT_EQ(61 * kSystemPageSize, stats->activeBytes);
|
| - EXPECT_EQ(64 * kSystemPageSize, stats->residentBytes);
|
| - }
|
| - CheckPageInCore(ptr1 - kPointerOffset + (kSystemPageSize * 60), true);
|
| - CheckPageInCore(ptr1 - kPointerOffset + (kSystemPageSize * 61), true);
|
| - CheckPageInCore(ptr1 - kPointerOffset + (kSystemPageSize * 62), true);
|
| - CheckPageInCore(ptr1 - kPointerOffset + (kSystemPageSize * 63), true);
|
| - partitionPurgeMemoryGeneric(genericAllocator.root(),
|
| - PartitionPurgeDiscardUnusedSystemPages);
|
| - CheckPageInCore(ptr1 - kPointerOffset + (kSystemPageSize * 60), true);
|
| - CheckPageInCore(ptr1 - kPointerOffset + (kSystemPageSize * 61), false);
|
| - CheckPageInCore(ptr1 - kPointerOffset + (kSystemPageSize * 62), false);
|
| - CheckPageInCore(ptr1 - kPointerOffset + (kSystemPageSize * 63), false);
|
| -
|
| - partitionFreeGeneric(genericAllocator.root(), ptr1);
|
| - }
|
| - // This sub-test tests truncation of the provisioned slots in a trickier
|
| - // case where the freelist is rewritten.
|
| - partitionPurgeMemoryGeneric(genericAllocator.root(),
|
| - PartitionPurgeDecommitEmptyPages);
|
| - {
|
| - char* ptr1 = reinterpret_cast<char*>(partitionAllocGeneric(
|
| - genericAllocator.root(), kSystemPageSize - kExtraAllocSize, typeName));
|
| - void* ptr2 = partitionAllocGeneric(
|
| - genericAllocator.root(), kSystemPageSize - kExtraAllocSize, typeName);
|
| - void* ptr3 = partitionAllocGeneric(
|
| - genericAllocator.root(), kSystemPageSize - kExtraAllocSize, typeName);
|
| - void* ptr4 = partitionAllocGeneric(
|
| - genericAllocator.root(), kSystemPageSize - kExtraAllocSize, typeName);
|
| - ptr1[0] = 'A';
|
| - ptr1[kSystemPageSize] = 'A';
|
| - ptr1[kSystemPageSize * 2] = 'A';
|
| - ptr1[kSystemPageSize * 3] = 'A';
|
| - PartitionPage* page =
|
| - partitionPointerToPage(partitionCookieFreePointerAdjust(ptr1));
|
| - partitionFreeGeneric(genericAllocator.root(), ptr2);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr4);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr1);
|
| - EXPECT_EQ(0u, page->numUnprovisionedSlots);
|
| -
|
| - {
|
| - MockPartitionStatsDumper mockStatsDumperGeneric;
|
| - partitionDumpStatsGeneric(
|
| - genericAllocator.root(), "mock_generic_allocator",
|
| - false /* detailed dump */, &mockStatsDumperGeneric);
|
| - EXPECT_TRUE(mockStatsDumperGeneric.IsMemoryAllocationRecorded());
|
| -
|
| - const PartitionBucketMemoryStats* stats =
|
| - mockStatsDumperGeneric.GetBucketStats(kSystemPageSize);
|
| - EXPECT_TRUE(stats);
|
| - EXPECT_TRUE(stats->isValid);
|
| - EXPECT_EQ(0u, stats->decommittableBytes);
|
| - EXPECT_EQ(2 * kSystemPageSize, stats->discardableBytes);
|
| - EXPECT_EQ(kSystemPageSize, stats->activeBytes);
|
| - EXPECT_EQ(4 * kSystemPageSize, stats->residentBytes);
|
| - }
|
| - CheckPageInCore(ptr1 - kPointerOffset, true);
|
| - CheckPageInCore(ptr1 - kPointerOffset + kSystemPageSize, true);
|
| - CheckPageInCore(ptr1 - kPointerOffset + (kSystemPageSize * 2), true);
|
| - CheckPageInCore(ptr1 - kPointerOffset + (kSystemPageSize * 3), true);
|
| - partitionPurgeMemoryGeneric(genericAllocator.root(),
|
| - PartitionPurgeDiscardUnusedSystemPages);
|
| - EXPECT_EQ(1u, page->numUnprovisionedSlots);
|
| - CheckPageInCore(ptr1 - kPointerOffset, true);
|
| - CheckPageInCore(ptr1 - kPointerOffset + kSystemPageSize, false);
|
| - CheckPageInCore(ptr1 - kPointerOffset + (kSystemPageSize * 2), true);
|
| - CheckPageInCore(ptr1 - kPointerOffset + (kSystemPageSize * 3), false);
|
| -
|
| - // Let's check we didn't brick the freelist.
|
| - void* ptr1b = partitionAllocGeneric(
|
| - genericAllocator.root(), kSystemPageSize - kExtraAllocSize, typeName);
|
| - EXPECT_EQ(ptr1, ptr1b);
|
| - void* ptr2b = partitionAllocGeneric(
|
| - genericAllocator.root(), kSystemPageSize - kExtraAllocSize, typeName);
|
| - EXPECT_EQ(ptr2, ptr2b);
|
| - EXPECT_FALSE(page->freelistHead);
|
| -
|
| - partitionFreeGeneric(genericAllocator.root(), ptr1);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr2);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr3);
|
| - }
|
| - // This sub-test is similar, but tests a double-truncation.
|
| - partitionPurgeMemoryGeneric(genericAllocator.root(),
|
| - PartitionPurgeDecommitEmptyPages);
|
| - {
|
| - char* ptr1 = reinterpret_cast<char*>(partitionAllocGeneric(
|
| - genericAllocator.root(), kSystemPageSize - kExtraAllocSize, typeName));
|
| - void* ptr2 = partitionAllocGeneric(
|
| - genericAllocator.root(), kSystemPageSize - kExtraAllocSize, typeName);
|
| - void* ptr3 = partitionAllocGeneric(
|
| - genericAllocator.root(), kSystemPageSize - kExtraAllocSize, typeName);
|
| - void* ptr4 = partitionAllocGeneric(
|
| - genericAllocator.root(), kSystemPageSize - kExtraAllocSize, typeName);
|
| - ptr1[0] = 'A';
|
| - ptr1[kSystemPageSize] = 'A';
|
| - ptr1[kSystemPageSize * 2] = 'A';
|
| - ptr1[kSystemPageSize * 3] = 'A';
|
| - PartitionPage* page =
|
| - partitionPointerToPage(partitionCookieFreePointerAdjust(ptr1));
|
| - partitionFreeGeneric(genericAllocator.root(), ptr4);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr3);
|
| - EXPECT_EQ(0u, page->numUnprovisionedSlots);
|
| -
|
| - {
|
| - MockPartitionStatsDumper mockStatsDumperGeneric;
|
| - partitionDumpStatsGeneric(
|
| - genericAllocator.root(), "mock_generic_allocator",
|
| - false /* detailed dump */, &mockStatsDumperGeneric);
|
| - EXPECT_TRUE(mockStatsDumperGeneric.IsMemoryAllocationRecorded());
|
| -
|
| - const PartitionBucketMemoryStats* stats =
|
| - mockStatsDumperGeneric.GetBucketStats(kSystemPageSize);
|
| - EXPECT_TRUE(stats);
|
| - EXPECT_TRUE(stats->isValid);
|
| - EXPECT_EQ(0u, stats->decommittableBytes);
|
| - EXPECT_EQ(2 * kSystemPageSize, stats->discardableBytes);
|
| - EXPECT_EQ(2 * kSystemPageSize, stats->activeBytes);
|
| - EXPECT_EQ(4 * kSystemPageSize, stats->residentBytes);
|
| - }
|
| - CheckPageInCore(ptr1 - kPointerOffset, true);
|
| - CheckPageInCore(ptr1 - kPointerOffset + kSystemPageSize, true);
|
| - CheckPageInCore(ptr1 - kPointerOffset + (kSystemPageSize * 2), true);
|
| - CheckPageInCore(ptr1 - kPointerOffset + (kSystemPageSize * 3), true);
|
| - partitionPurgeMemoryGeneric(genericAllocator.root(),
|
| - PartitionPurgeDiscardUnusedSystemPages);
|
| - EXPECT_EQ(2u, page->numUnprovisionedSlots);
|
| - CheckPageInCore(ptr1 - kPointerOffset, true);
|
| - CheckPageInCore(ptr1 - kPointerOffset + kSystemPageSize, true);
|
| - CheckPageInCore(ptr1 - kPointerOffset + (kSystemPageSize * 2), false);
|
| - CheckPageInCore(ptr1 - kPointerOffset + (kSystemPageSize * 3), false);
|
| -
|
| - EXPECT_FALSE(page->freelistHead);
|
| -
|
| - partitionFreeGeneric(genericAllocator.root(), ptr1);
|
| - partitionFreeGeneric(genericAllocator.root(), ptr2);
|
| - }
|
| -
|
| - TestShutdown();
|
| -}
|
| -
|
| -} // namespace WTF
|
| -
|
| -#endif // !defined(MEMORY_TOOL_REPLACES_ALLOCATOR)
|
|
|
Chromium Code Reviews
Issue 2518253002:
Move Partition Allocator into Chromium base. (Closed)
