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// Copyright 2019 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.
#ifndef UI_GL_GL_IMPLEMENTATION_WRAPPER_H_
#define UI_GL_GL_IMPLEMENTATION_WRAPPER_H_
#include <memory>
#include "base/command_line.h"
#include "ui/gl/gl_switches.h"
#define GL_IMPL_WRAPPER_TYPE(name) \
GLImplementationWrapper<name##Api, Trace##name##Api, Log##name##Api>
namespace gl {
// Wraps a GLApi with its tracing and logging variants when the corresponding
// command line flags are passed.
template <class GLImplApi, class GLTraceImplApi, class GLLogImplApi>
class GLImplementationWrapper {
public:
GLImplementationWrapper(std::unique_ptr<GLImplApi> real_gl)
: real_gl_(std::move(real_gl)) {
gl_api_ = real_gl_.get();
static bool enable_tracing =
base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kEnableGPUServiceTracing);
if (enable_tracing) {
trace_gl_ = std::make_unique<GLTraceImplApi>(gl_api_);
gl_api_ = trace_gl_.get();
}
static bool enable_logging =
base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kEnableGPUServiceLogging);
if (enable_logging) {
log_gl_ = std::make_unique<GLLogImplApi>(gl_api_);
gl_api_ = log_gl_.get();
}
}
~GLImplementationWrapper() = default;
GLImplApi* api() { return gl_api_; }
private:
std::unique_ptr<GLImplApi> real_gl_;
std::unique_ptr<GLTraceImplApi> trace_gl_;
std::unique_ptr<GLLogImplApi> log_gl_;
GLImplApi* gl_api_ = nullptr;
DISALLOW_COPY_AND_ASSIGN(GLImplementationWrapper);
};
} // namespace gl
#endif // UI_GL_GL_IMPLEMENTATION_WRAPPER_H_
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