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// Copyright 2015 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/files/file_tracing.h"
#include "base/files/file.h"
namespace base {
namespace {
FileTracing::Provider* g_provider = nullptr;
}
// static
bool FileTracing::IsCategoryEnabled() {
return g_provider && g_provider->FileTracingCategoryIsEnabled();
}
// static
void FileTracing::SetProvider(FileTracing::Provider* provider) {
g_provider = provider;
}
FileTracing::ScopedEnabler::ScopedEnabler() {
if (g_provider)
g_provider->FileTracingEnable(this);
}
FileTracing::ScopedEnabler::~ScopedEnabler() {
if (g_provider)
g_provider->FileTracingDisable(this);
}
FileTracing::ScopedTrace::ScopedTrace() : id_(nullptr) {}
FileTracing::ScopedTrace::~ScopedTrace() {
if (id_ && g_provider)
g_provider->FileTracingEventEnd(name_, id_);
}
void FileTracing::ScopedTrace::Initialize(
const char* name, File* file, int64 size) {
id_ = &file->trace_enabler_;
name_ = name;
g_provider->FileTracingEventBegin(name_, id_, file->tracing_path_, size);
}
} // namespace base
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