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Unified Diff: base/shared_memory_unittest.cc

Issue 11876037: Added SharedMemory::MapFrom. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Created 7 years, 11 months ago
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Index: base/shared_memory_unittest.cc
diff --git a/base/shared_memory_unittest.cc b/base/shared_memory_unittest.cc
index bd537692f4880febe1ce12dc9a18e91991296ca4..205a9c408174736872205a1816693ab99e994430 100644
--- a/base/shared_memory_unittest.cc
+++ b/base/shared_memory_unittest.cc
@@ -8,6 +8,7 @@
#endif
#include "base/memory/scoped_ptr.h"
#include "base/shared_memory.h"
+#include "base/sys_info.h"
#include "base/test/multiprocess_test.h"
#include "base/threading/platform_thread.h"
#include "base/time.h"
@@ -343,6 +344,36 @@ TEST(SharedMemoryTest, AnonymousPrivate) {
}
}
+TEST(SharedMemoryTest, MapFrom) {
+ ASSERT_TRUE(SysInfo::VMAllocationGranularity() >= sizeof(uint32));
+ const size_t kCount = SysInfo::VMAllocationGranularity();
+ const size_t kDataSize = kCount * sizeof(uint32);
+ static const char kTestName[] = "SharedMemoryMapFrom";
+
+ SharedMemory memory1;
+ memory1.Delete(kTestName);
+ ASSERT_TRUE(memory1.CreateNamed(kTestName, false, kDataSize));
+ ASSERT_TRUE(memory1.Map(kDataSize));
+ uint32* ptr1 = static_cast<uint32*>(memory1.memory());
+ ASSERT_NE(ptr1, static_cast<void*>(NULL));
+
+ for (size_t i = 0; i < kCount; ++i) {
+ ptr1[i] = i;
+ }
+
+ SharedMemory memory2;
+ ASSERT_TRUE(memory2.CreateNamed(kTestName, true, kDataSize));
+ off_t offset = SysInfo::VMAllocationGranularity();
+ ASSERT_TRUE(memory2.MapFrom(offset, kDataSize - offset));
+ offset /= sizeof(uint32);
+ uint32* ptr2 = static_cast<uint32*>(memory2.memory());
+ ASSERT_NE(ptr2, static_cast<void*>(NULL));
+ for (size_t i = offset; i < kCount; ++i) {
+ ASSERT_EQ(ptr2[i - offset], i);
+ }
+ memory1.Delete(kTestName);
+}
+
#if defined(OS_POSIX)
// Create a shared memory object, mmap it, and mprotect it to PROT_EXEC.
TEST(SharedMemoryTest, AnonymousExecutable) {

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