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// Copyright (c) 2006-2009 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 "webkit/extensions/v8/heap_profiler_extension.h"
#include "base/basictypes.h"
#if defined(USE_TCMALLOC) && !defined(OS_WIN)
#include "third_party/tcmalloc/chromium/src/google/heap-profiler.h"
#endif
namespace extensions_v8 {
namespace {
const char kHeapProfilerExtensionName[] = "v8/HeapProfiler";
class HeapProfilerWrapper : public v8::Extension {
public:
HeapProfilerWrapper()
: v8::Extension(kHeapProfilerExtensionName,
"if (typeof(chromium) == 'undefined') {"
" chromium = {};"
"}"
"(function() {"
" native function HeapProfilerStart();"
" native function HeapProfilerStop();"
" native function HeapProfilerDump();"
" chromium.HeapProfiler = {};"
" chromium.HeapProfiler.start = function(opt_prefix) {"
" var prefix = opt_prefix;"
" if (!prefix) {"
" var d = new Date();"
" prefix = \"chromium-\" + "
" (1900 + d.getYear()) + "
" \"-\" + d.getMonth() + "
" \"-\" + d.getDay() + "
" \"-\" + d.getTime();"
" }"
" HeapProfilerStart(prefix);"
" };"
" chromium.HeapProfiler.stop = function() {"
" HeapProfilerStop();"
" };"
" chromium.HeapProfiler.dump = function(opt_reason) {"
" HeapProfilerDump(opt_reason || \"\");"
" };"
"})();") {}
virtual v8::Handle<v8::FunctionTemplate> GetNativeFunction(
v8::Handle<v8::String> name) {
if (name->Equals(v8::String::New("HeapProfilerStart"))) {
return v8::FunctionTemplate::New(HeapProfilerStart);
} else if (name->Equals(v8::String::New("HeapProfilerStop"))) {
return v8::FunctionTemplate::New(HeapProfilerStop);
} else if (name->Equals(v8::String::New("HeapProfilerDump"))) {
return v8::FunctionTemplate::New(HeapProfilerDump);
}
return v8::Handle<v8::FunctionTemplate>();
}
#if defined(USE_TCMALLOC) && !defined(OS_WIN)
static v8::Handle<v8::Value> HeapProfilerStart(const v8::Arguments& args) {
if (args.Length() >= 1 && args[0]->IsString()) {
v8::Local<v8::String> js_prefix = args[0]->ToString();
char prefix[256];
js_prefix->WriteAscii(prefix, 0, arraysize(prefix) - 1);
::HeapProfilerStart(prefix);
}
return v8::Undefined();
}
static v8::Handle<v8::Value> HeapProfilerStop(const v8::Arguments& args) {
::HeapProfilerStop();
return v8::Undefined();
}
static v8::Handle<v8::Value> HeapProfilerDump(const v8::Arguments& args) {
if (args.Length() >= 1 && args[0]->IsString()) {
v8::Local<v8::String> js_reason = args[0]->ToString();
char reason[256];
js_reason->WriteAscii(reason, 0, arraysize(reason) - 1);
::HeapProfilerDump(reason);
}
return v8::Undefined();
}
#else
static v8::Handle<v8::Value> HeapProfilerStart(const v8::Arguments& args) {
return v8::Undefined();
}
static v8::Handle<v8::Value> HeapProfilerStop(const v8::Arguments& args) {
return v8::Undefined();
}
static v8::Handle<v8::Value> HeapProfilerDump(const v8::Arguments& args) {
return v8::Undefined();
}
#endif
};
} // namespace
v8::Extension* HeapProfilerExtension::Get() {
return new HeapProfilerWrapper;
}
} // namespace extensions_v8
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