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// Copyright (c) 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 "content/renderer/memory_benchmarking_extension.h"
#include "base/string_util.h"
#include "content/public/renderer/render_thread.h"
#if !defined(NO_TCMALLOC) && defined(OS_LINUX)
#include "third_party/tcmalloc/chromium/src/gperftools/heap-profiler.h"
#endif // !defined(NO_TCMALLOC) && defined(OS_LINUX)
namespace {
const char kMemoryBenchmarkingExtensionName[] = "v8/MemoryBenchmarking";
}
namespace {
class MemoryBenchmarkingWrapper : public v8::Extension {
public:
MemoryBenchmarkingWrapper() :
v8::Extension(kMemoryBenchmarkingExtensionName,
"if (typeof(chrome) == 'undefined') {"
" chrome = {};"
"};"
"if (typeof(chrome.memoryBenchmarking) == 'undefined') {"
" chrome.memoryBenchmarking = {};"
"};"
"chrome.memoryBenchmarking.isHeapProfilerRunning = function() {"
" native function IsHeapProfilerRunning();"
" return IsHeapProfilerRunning();"
"};"
"chrome.memoryBenchmarking.heapProfilerDump = function(reason) {"
" native function HeapProfilerDump();"
" return HeapProfilerDump(reason);"
"};"
) {}
virtual v8::Handle<v8::FunctionTemplate> GetNativeFunction(
v8::Handle<v8::String> name) {
if (name->Equals(v8::String::New("IsHeapProfilerRunning")))
return v8::FunctionTemplate::New(IsHeapProfilerRunning);
else if (name->Equals(v8::String::New("HeapProfilerDump")))
return v8::FunctionTemplate::New(HeapProfilerDump);
return v8::Handle<v8::FunctionTemplate>();
}
static v8::Handle<v8::Value> IsHeapProfilerRunning(
const v8::Arguments& args) {
#if !defined(NO_TCMALLOC) && defined(OS_LINUX)
return v8::Boolean::New(::IsHeapProfilerRunning());
#else
return v8::Boolean::New(false);
#endif // !defined(NO_TCMALLOC) && defined(OS_LINUX)
}
static v8::Handle<v8::Value> HeapProfilerDump(const v8::Arguments& args) {
#if !defined(NO_TCMALLOC) && defined(OS_LINUX)
char dumped_filename_buffer[1000];
std::string reason("benchmarking_extension");
if (args.Length() && args[0]->IsString())
reason = *v8::String::AsciiValue(args[0]);
::HeapProfilerDumpWithFileName(reason.c_str(),
dumped_filename_buffer,
sizeof(dumped_filename_buffer));
return v8::String::New(dumped_filename_buffer);
#endif // !defined(NO_TCMALLOC) && defined(OS_LINUX)
return v8::Undefined();
}
};
} // namespace
namespace content {
v8::Extension* MemoryBenchmarkingExtension::Get() {
return new MemoryBenchmarkingWrapper();
}
} // namespace content
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