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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/profiling_host/profiling_process_host.h"
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "base/files/file_util.h"
#include "base/functional/bind.h"
#include "base/functional/callback_helpers.h"
#include "base/memory/ref_counted_memory.h"
#include "base/metrics/field_trial_params.h"
#include "base/metrics/histogram_macros.h"
#include "base/system/sys_info.h"
#include "base/task/thread_pool.h"
#include "base/trace_event/trace_log.h"
#include "base/values.h"
#include "build/build_config.h"
#include "chrome/browser/browser_process.h"
#include "components/heap_profiling/multi_process/supervisor.h"
#include "components/services/heap_profiling/public/cpp/controller.h"
#include "components/services/heap_profiling/public/cpp/settings.h"
#include "components/version_info/version_info.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "services/network/public/cpp/shared_url_loader_factory.h"
#include "third_party/zlib/zlib.h"
#include "url/gurl.h"
#if BUILDFLAG(IS_WIN)
#include <io.h>
#endif
namespace heap_profiling {
ProfilingProcessHost::ProfilingProcessHost() = default;
ProfilingProcessHost::~ProfilingProcessHost() = default;
void ProfilingProcessHost::Start() {
metrics_timer_.Start(FROM_HERE, base::Hours(24),
base::BindRepeating(&ProfilingProcessHost::ReportMetrics,
base::Unretained(this)));
}
// static
ProfilingProcessHost* ProfilingProcessHost::GetInstance() {
return base::Singleton<
ProfilingProcessHost,
base::LeakySingletonTraits<ProfilingProcessHost>>::get();
}
void ProfilingProcessHost::SaveTraceWithHeapDumpToFile(
base::FilePath dest,
SaveTraceFinishedCallback done,
bool stop_immediately_after_heap_dump_for_tests) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
auto finish_trace_callback = base::BindOnce(
[](base::FilePath dest, SaveTraceFinishedCallback done, bool success,
std::string trace) {
if (!success) {
content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE, base::BindOnce(std::move(done), false));
return;
}
base::ThreadPool::PostTask(
FROM_HERE, {base::TaskPriority::USER_VISIBLE, base::MayBlock()},
base::BindOnce(
&ProfilingProcessHost::SaveTraceToFileOnBlockingThread,
base::Unretained(ProfilingProcessHost::GetInstance()),
std::move(dest), std::move(trace), std::move(done)));
},
std::move(dest), std::move(done));
Supervisor::GetInstance()->RequestTraceWithHeapDump(
std::move(finish_trace_callback), /*anonymize=*/false);
}
void ProfilingProcessHost::SaveTraceToFileOnBlockingThread(
base::FilePath dest,
std::string trace,
SaveTraceFinishedCallback done) {
base::File file(dest,
base::File::FLAG_CREATE_ALWAYS | base::File::FLAG_WRITE);
// Pass ownership of the underlying fd/HANDLE to zlib.
base::PlatformFile platform_file = file.TakePlatformFile();
#if BUILDFLAG(IS_WIN)
// The underlying handle |platform_file| is also closed when |fd| is closed.
int fd = _open_osfhandle(reinterpret_cast<intptr_t>(platform_file), 0);
#else
int fd = platform_file;
#endif
gzFile gz_file = gzdopen(fd, "w");
if (!gz_file) {
DLOG(ERROR) << "Cannot compress trace file";
content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE, base::BindOnce(std::move(done), false));
return;
}
size_t written_bytes = gzwrite(gz_file, trace.c_str(), trace.size());
gzclose(gz_file);
content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(std::move(done), written_bytes == trace.size()));
}
void ProfilingProcessHost::ReportMetrics() {
UMA_HISTOGRAM_ENUMERATION("HeapProfiling.ProfilingMode",
Supervisor::GetInstance()->GetMode(), Mode::kCount);
}
} // namespace heap_profiling
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