- Address warnings about 64-bit to 32-bit conversions.

runtime/vm/heap_profiler_test.cc

-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-#include "platform/assert.h"
-#include "vm/heap_profiler.h"
-#include "vm/growable_array.h"
-#include "vm/unit_test.h"
-
-namespace dart {
-
-static void WriteCallback(const void* data, intptr_t length, void* stream) {
-  GrowableArray<uint8_t>* array =
-      reinterpret_cast<GrowableArray<uint8_t>*>(stream);
-  for (intptr_t i = 0; i < length; ++i) {
-    array->Add(reinterpret_cast<const uint8_t*>(data)[i]);
-  }
-}
-
-
-static uint8_t Read8(GrowableArray<uint8_t>* array, intptr_t* i) {
-  EXPECT(array != NULL);
-  EXPECT(i != NULL);
-  EXPECT_LE(*i + 1, array->length());
-  return (*array)[(*i)++];
-}
-
-
-static uint32_t Read32(GrowableArray<uint8_t>* array, intptr_t* i) {
-  EXPECT(array != NULL);
-  EXPECT(i != NULL);
-  EXPECT_LE(*i + 4, array->length());
-  uint32_t result = 0;
-  result |= ((*array)[(*i)++] <<  0);
-  result |= ((*array)[(*i)++] <<  8);
-  result |= ((*array)[(*i)++] << 16);
-  result |= ((*array)[(*i)++] << 24);
-  return ntohl(result);
-}
-
-
-static bool IsTagValid(uint8_t tag) {
-  switch (static_cast<HeapProfiler::Tag>(tag)) {
-    case HeapProfiler::kStringInUtf8:
-    case HeapProfiler::kLoadClass:
-    case HeapProfiler::kUnloadClass:
-    case HeapProfiler::kStackFrame:
-    case HeapProfiler::kStackTrace:
-    case HeapProfiler::kAllocSites:
-    case HeapProfiler::kHeapSummary:
-    case HeapProfiler::kStartThread:
-    case HeapProfiler::kEndThread:
-    case HeapProfiler::kHeapDump:
-    case HeapProfiler::kCpuSamples:
-    case HeapProfiler::kControlSettings:
-    case HeapProfiler::kHeapDumpSummary:
-    case HeapProfiler::kHeapDumpEnd:
-      return true;
-    default:
-      return false;
-  }
-}
-
-
-// Write an empty profile.  Validate the presence of a header and a
-// minimal set of records.
-TEST_CASE(HeapProfileEmpty) {
-  uint64_t before = OS::GetCurrentTimeMillis();
-  GrowableArray<uint8_t> array;
-  {
-    HeapProfiler(WriteCallback, &array);
-  }
-  uint64_t after = OS::GetCurrentTimeMillis();
-  intptr_t i = 0;
-  EXPECT_LE(i + 19, array.length());
-  EXPECT_EQ('J', array[i++]);
-  EXPECT_EQ('A', array[i++]);
-  EXPECT_EQ('V', array[i++]);
-  EXPECT_EQ('A', array[i++]);
-  EXPECT_EQ(' ', array[i++]);
-  EXPECT_EQ('P', array[i++]);
-  EXPECT_EQ('R', array[i++]);
-  EXPECT_EQ('O', array[i++]);
-  EXPECT_EQ('F', array[i++]);
-  EXPECT_EQ('I', array[i++]);
-  EXPECT_EQ('L', array[i++]);
-  EXPECT_EQ('E', array[i++]);
-  EXPECT_EQ(' ', array[i++]);
-  EXPECT_EQ('1', array[i++]);
-  EXPECT_EQ('.', array[i++]);
-  EXPECT_EQ('0', array[i++]);
-  EXPECT_EQ('.', array[i++]);
-  EXPECT_EQ('1', array[i++]);
-  EXPECT_EQ('\0', array[i++]);
-  uint32_t size = Read32(&array, &i);
-  EXPECT_EQ(8u, size);
-  uint64_t hi = Read32(&array, &i);
-  uint64_t lo = Read32(&array, &i);
-  uint64_t time = (hi << 32) | lo;
-  EXPECT_LE(before, time);
-  EXPECT_GE(after, time);
-  while (i != array.length()) {
-    // Check tag
-    uint8_t tag = Read8(&array, &i);
-    EXPECT(IsTagValid(tag));
-    // Check time diff
-    uint32_t time_diff = Read32(&array, &i);
-    EXPECT_LE(before, time + time_diff);
-    EXPECT_GE(after, time + time_diff);
-    // Check length diff
-    uint32_t length = Read32(&array, &i);
-    EXPECT_LE((intptr_t)length + i , array.length());
-    // skip body
-    i += length;
-  }
-}
-
-}  // namespace dart