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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/debug/trace_event_memory.h"
#include <sstream>
#include <string>
#include "base/debug/trace_event_impl.h"
#include "base/message_loop/message_loop.h"
#include "testing/gtest/include/gtest/gtest.h"
#if defined(TCMALLOC_TRACE_MEMORY_SUPPORTED)
#include "third_party/tcmalloc/chromium/src/gperftools/heap-profiler.h"
#endif
namespace base {
namespace debug {
// Tests for the trace event memory tracking system. Exists as a class so it
// can be a friend of TraceMemoryController.
class TraceMemoryTest : public testing::Test {
public:
TraceMemoryTest() {}
virtual ~TraceMemoryTest() {}
private:
DISALLOW_COPY_AND_ASSIGN(TraceMemoryTest);
};
//////////////////////////////////////////////////////////////////////////////
#if defined(TCMALLOC_TRACE_MEMORY_SUPPORTED)
TEST_F(TraceMemoryTest, TraceMemoryController) {
MessageLoop message_loop;
// Start with no observers of the TraceLog.
EXPECT_EQ(0u, TraceLog::GetInstance()->GetObserverCountForTest());
// Creating a controller adds it to the TraceLog observer list.
scoped_ptr<TraceMemoryController> controller(
new TraceMemoryController(
message_loop.message_loop_proxy(),
::HeapProfilerWithPseudoStackStart,
::HeapProfilerStop,
::GetHeapProfile));
EXPECT_EQ(1u, TraceLog::GetInstance()->GetObserverCountForTest());
EXPECT_TRUE(
TraceLog::GetInstance()->HasEnabledStateObserver(controller.get()));
// By default the observer isn't dumping memory profiles.
EXPECT_FALSE(controller->IsTimerRunningForTest());
// Simulate enabling tracing.
controller->StartProfiling();
message_loop.RunUntilIdle();
EXPECT_TRUE(controller->IsTimerRunningForTest());
// Simulate disabling tracing.
controller->StopProfiling();
message_loop.RunUntilIdle();
EXPECT_FALSE(controller->IsTimerRunningForTest());
// Deleting the observer removes it from the TraceLog observer list.
controller.reset();
EXPECT_EQ(0u, TraceLog::GetInstance()->GetObserverCountForTest());
}
TEST_F(TraceMemoryTest, ScopedTraceMemory) {
ScopedTraceMemory::InitForTest();
// Start with an empty stack.
EXPECT_EQ(0, ScopedTraceMemory::GetStackDepthForTest());
{
// Push an item.
ScopedTraceMemory scope1("cat1", "name1");
EXPECT_EQ(1, ScopedTraceMemory::GetStackDepthForTest());
EXPECT_EQ("cat1", ScopedTraceMemory::GetScopeDataForTest(0).category);
EXPECT_EQ("name1", ScopedTraceMemory::GetScopeDataForTest(0).name);
{
// One more item.
ScopedTraceMemory scope2("cat2", "name2");
EXPECT_EQ(2, ScopedTraceMemory::GetStackDepthForTest());
EXPECT_EQ("cat2", ScopedTraceMemory::GetScopeDataForTest(1).category);
EXPECT_EQ("name2", ScopedTraceMemory::GetScopeDataForTest(1).name);
}
// Ended scope 2.
EXPECT_EQ(1, ScopedTraceMemory::GetStackDepthForTest());
}
// Ended scope 1.
EXPECT_EQ(0, ScopedTraceMemory::GetStackDepthForTest());
ScopedTraceMemory::CleanupForTest();
}
void TestDeepScopeNesting(int current, int depth) {
EXPECT_EQ(current, ScopedTraceMemory::GetStackDepthForTest());
ScopedTraceMemory scope("category", "name");
if (current < depth)
TestDeepScopeNesting(current + 1, depth);
EXPECT_EQ(current + 1, ScopedTraceMemory::GetStackDepthForTest());
}
TEST_F(TraceMemoryTest, DeepScopeNesting) {
ScopedTraceMemory::InitForTest();
// Ensure really deep scopes don't crash.
TestDeepScopeNesting(0, 100);
ScopedTraceMemory::CleanupForTest();
}
#endif // defined(TRACE_MEMORY_SUPPORTED)
/////////////////////////////////////////////////////////////////////////////
TEST_F(TraceMemoryTest, AppendHeapProfileTotalsAsTraceFormat) {
// Empty input gives empty output.
std::string empty_output;
AppendHeapProfileTotalsAsTraceFormat("", &empty_output);
EXPECT_EQ("", empty_output);
// Typical case.
const char input[] =
"heap profile: 357: 55227 [ 14653: 2624014] @ heapprofile";
const std::string kExpectedOutput =
"{\"current_allocs\": 357, \"current_bytes\": 55227, \"trace\": \"\"}";
std::string output;
AppendHeapProfileTotalsAsTraceFormat(input, &output);
EXPECT_EQ(kExpectedOutput, output);
}
TEST_F(TraceMemoryTest, AppendHeapProfileLineAsTraceFormat) {
// Empty input gives empty output.
std::string empty_output;
EXPECT_FALSE(AppendHeapProfileLineAsTraceFormat("", &empty_output));
EXPECT_EQ("", empty_output);
// Invalid input returns false.
std::string junk_output;
EXPECT_FALSE(AppendHeapProfileLineAsTraceFormat("junk", &junk_output));
// Input with normal category and name entries.
const char kCategory[] = "category";
const char kName[] = "name";
std::ostringstream input;
input << " 68: 4195 [ 1087: 98009] @ " << &kCategory << " "
<< &kName;
const std::string kExpectedOutput =
",\n"
"{"
"\"current_allocs\": 68, "
"\"current_bytes\": 4195, "
"\"trace\": \"name \""
"}";
std::string output;
EXPECT_TRUE(
AppendHeapProfileLineAsTraceFormat(input.str().c_str(), &output));
EXPECT_EQ(kExpectedOutput, output);
// Input with with the category "toplevel".
// TODO(jamescook): Eliminate this special case and move the logic to the
// trace viewer code.
const char kTaskCategory[] = "toplevel";
const char kTaskName[] = "TaskName";
std::ostringstream input2;
input2 << " 68: 4195 [ 1087: 98009] @ " << &kTaskCategory << " "
<< &kTaskName;
const std::string kExpectedOutput2 =
",\n"
"{"
"\"current_allocs\": 68, "
"\"current_bytes\": 4195, "
"\"trace\": \"TaskName->PostTask \""
"}";
std::string output2;
EXPECT_TRUE(
AppendHeapProfileLineAsTraceFormat(input2.str().c_str(), &output2));
EXPECT_EQ(kExpectedOutput2, output2);
// Zero current allocations is skipped.
std::ostringstream zero_input;
zero_input << " 0: 0 [ 1087: 98009] @ " << &kCategory << " "
<< &kName;
std::string zero_output;
EXPECT_FALSE(AppendHeapProfileLineAsTraceFormat(zero_input.str().c_str(),
&zero_output));
EXPECT_EQ("", zero_output);
}
TEST_F(TraceMemoryTest, AppendHeapProfileAsTraceFormat) {
// Empty input gives empty output.
std::string empty_output;
AppendHeapProfileAsTraceFormat("", &empty_output);
EXPECT_EQ("", empty_output);
// Typical case.
const char input[] =
"heap profile: 357: 55227 [ 14653: 2624014] @ heapprofile\n"
" 95: 40940 [ 649: 114260] @\n"
" 77: 32546 [ 742: 106234] @ 0x0 0x0\n"
" 0: 0 [ 132: 4236] @ 0x0\n"
"\n"
"MAPPED_LIBRARIES:\n"
"1be411fc1000-1be4139e4000 rw-p 00000000 00:00 0\n"
"1be4139e4000-1be4139e5000 ---p 00000000 00:00 0\n";
const std::string kExpectedOutput =
"[{"
"\"current_allocs\": 357, "
"\"current_bytes\": 55227, "
"\"trace\": \"\"},\n"
"{\"current_allocs\": 95, "
"\"current_bytes\": 40940, "
"\"trace\": \"\"},\n"
"{\"current_allocs\": 77, "
"\"current_bytes\": 32546, "
"\"trace\": \"null \""
"}]\n";
std::string output;
AppendHeapProfileAsTraceFormat(input, &output);
EXPECT_EQ(kExpectedOutput, output);
}
TEST_F(TraceMemoryTest, StringFromHexAddress) {
EXPECT_STREQ("null", StringFromHexAddress("0x0"));
EXPECT_STREQ("error", StringFromHexAddress("not an address"));
const char kHello[] = "hello";
std::ostringstream hex_address;
hex_address << &kHello;
EXPECT_STREQ(kHello, StringFromHexAddress(hex_address.str()));
}
} // namespace debug
} // namespace base
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