| // 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 |
| 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() : initialized_(false) {} |
| |
| FileTracing::ScopedTrace::~ScopedTrace() { |
| if (initialized_ && g_provider) { |
| g_provider->FileTracingEventEnd( |
| name_, &file_->trace_enabler_, file_->path_, size_); |
| } |
| } |
| |
| bool FileTracing::ScopedTrace::ShouldInitialize() const { |
| return g_provider && g_provider->FileTracingCategoryIsEnabled(); |
| } |
| |
| void FileTracing::ScopedTrace::Initialize( |
| const char* name, File* file, int64 size) { |
| file_ = file; |
| name_ = name; |
| size_ = size; |
| initialized_ = true; |
| |
| if (g_provider) { |
| g_provider->FileTracingEventBegin( |
| name_, &file_->trace_enabler_, file_->path_, size_); |
| } |
| } |
| |
| } // namespace base |