mirror of
https://github.com/klzgrad/naiveproxy.git
synced 2024-11-28 08:16:09 +03:00
60 lines
2.0 KiB
C++
60 lines
2.0 KiB
C++
// Copyright 2018 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/task/task_executor.h"
|
|
|
|
#include <type_traits>
|
|
|
|
#include "base/task/task_traits.h"
|
|
#include "base/task/task_traits_extension.h"
|
|
|
|
namespace base {
|
|
|
|
namespace {
|
|
|
|
// Maps TaskTraits extension IDs to registered TaskExecutors. Index |n|
|
|
// corresponds to id |n - 1|.
|
|
using TaskExecutorMap =
|
|
std::array<TaskExecutor*, TaskTraitsExtensionStorage::kMaxExtensionId>;
|
|
TaskExecutorMap* GetTaskExecutorMap() {
|
|
static_assert(std::is_trivially_destructible<TaskExecutorMap>::value,
|
|
"TaskExecutorMap not trivially destructible");
|
|
static TaskExecutorMap executors{};
|
|
return &executors;
|
|
}
|
|
|
|
static_assert(
|
|
TaskTraitsExtensionStorage::kInvalidExtensionId == 0,
|
|
"TaskExecutorMap depends on 0 being an invalid TaskTraits extension ID");
|
|
|
|
} // namespace
|
|
|
|
void RegisterTaskExecutor(uint8_t extension_id, TaskExecutor* task_executor) {
|
|
DCHECK_NE(extension_id, TaskTraitsExtensionStorage::kInvalidExtensionId);
|
|
DCHECK_LE(extension_id, TaskTraitsExtensionStorage::kMaxExtensionId);
|
|
DCHECK_EQ((*GetTaskExecutorMap())[extension_id - 1], nullptr);
|
|
|
|
(*GetTaskExecutorMap())[extension_id - 1] = task_executor;
|
|
}
|
|
|
|
void UnregisterTaskExecutorForTesting(uint8_t extension_id) {
|
|
DCHECK_NE(extension_id, TaskTraitsExtensionStorage::kInvalidExtensionId);
|
|
DCHECK_LE(extension_id, TaskTraitsExtensionStorage::kMaxExtensionId);
|
|
DCHECK_NE((*GetTaskExecutorMap())[extension_id - 1], nullptr);
|
|
|
|
(*GetTaskExecutorMap())[extension_id - 1] = nullptr;
|
|
}
|
|
|
|
TaskExecutor* GetRegisteredTaskExecutorForTraits(const TaskTraits& traits) {
|
|
uint8_t extension_id = traits.extension_id();
|
|
if (extension_id != TaskTraitsExtensionStorage::kInvalidExtensionId) {
|
|
TaskExecutor* executor = (*GetTaskExecutorMap())[extension_id - 1];
|
|
DCHECK(executor);
|
|
return executor;
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
} // namespace base
|