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// Copyright 2016 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 COMPONENTS_TASK_SCHEDULER_UTIL_COMMON_VARIATIONS_UTIL_H_
#define COMPONENTS_TASK_SCHEDULER_UTIL_COMMON_VARIATIONS_UTIL_H_
#include <map>
#include <string>
#include <vector>
#include "build/build_config.h"
#include "base/strings/string_piece.h"
#include "base/task_scheduler/scheduler_worker_params.h"
#include "base/task_scheduler/scheduler_worker_pool_params.h"
#include "base/threading/platform_thread.h"
namespace base {
class CommandLine;
}
namespace task_scheduler_util {
class SchedulerImmutableWorkerPoolParams {
public:
SchedulerImmutableWorkerPoolParams(
const char* name,
base::ThreadPriority priority_hint,
base::SchedulerBackwardCompatibility backward_compatibility =
base::SchedulerBackwardCompatibility::DISABLED);
const char* name() const { return name_; }
base::ThreadPriority priority_hint() const { return priority_hint_; }
base::SchedulerBackwardCompatibility backward_compatibility() const {
return backward_compatibility_;
}
private:
const char* name_;
base::ThreadPriority priority_hint_;
base::SchedulerBackwardCompatibility backward_compatibility_;
};
// Returns a SchedulerWorkerPoolParams vector to initialize pools specified in
// |constant_worker_pool_params_vector|. SchedulerWorkerPoolParams members
// without a counterpart in SchedulerImmutableWorkerPoolParams are initialized
// based of |variation_params|. Returns an empty vector on failure.
std::vector<base::SchedulerWorkerPoolParams> GetWorkerPoolParams(
const std::vector<SchedulerImmutableWorkerPoolParams>&
constant_worker_pool_params_vector,
const std::map<std::string, std::string>& variation_params);
#if !defined(OS_IOS)
// Serializes variation params from the BrowserScheduler field trial whose key
// start with |prefix| to the --task-scheduler-variation-params switch of
// |command_line|.
void AddVariationParamsToCommandLine(base::StringPiece key_prefix,
base::CommandLine* command_line);
// Returns a map of key-value pairs deserialized from the
// --task-scheduler-variation-params switch of |command_line|.
std::map<std::string, std::string> GetVariationParamsFromCommandLine(
const base::CommandLine& command_line);
#endif // !defined(OS_IOS)
} // namespace task_scheduler_util
#endif // COMPONENTS_TASK_SCHEDULER_UTIL_COMMON_VARIATIONS_UTIL_H_
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