sgjesse@google.com
42b70dcddb
The platform thread interface (dart::thread) is now refactored to an all static interface as suggested by iposva@ and asiva@. Use this interface for running all threads in the VM. R=ager@google.com, iposva@google.com BUG= TEST= Review URL: https://chromiumcodereview.appspot.com//9141005 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@3830 260f80e4-7a28-3924-810f-c04153c831b5
84 lines
1.8 KiB
C++
84 lines
1.8 KiB
C++
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef BIN_THREAD_POOL_H_
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#define BIN_THREAD_POOL_H_
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#include "bin/builtin.h"
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#include "platform/globals.h"
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#include "platform/thread.h"
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typedef void* Task;
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class TaskQueueEntry {
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public:
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explicit TaskQueueEntry(Task task) : task_(task), next_(NULL) {}
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Task task() { return task_; }
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TaskQueueEntry* next() { return next_; }
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void set_next(TaskQueueEntry* value) { next_ = value; }
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private:
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Task task_;
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TaskQueueEntry* next_;
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};
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// The task queue is a single linked list. Link direction is from tail
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// to head. New entried are inserted at the tail and entries are
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// removed from the head.
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class TaskQueue {
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public:
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TaskQueue() : terminate_(false), head_(NULL), tail_(NULL) {}
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void Insert(TaskQueueEntry* task);
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TaskQueueEntry* Remove();
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void Shutdown();
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private:
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bool terminate_;
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TaskQueueEntry* head_;
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TaskQueueEntry* tail_;
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dart::Monitor monitor_;
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DISALLOW_COPY_AND_ASSIGN(TaskQueue);
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};
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class ThreadPool {
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public:
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typedef void* (*TaskHandler)(void* args);
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ThreadPool(TaskHandler task_handler, int initial_size = 4)
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: terminate_(false),
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size_(initial_size),
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task_handler_(task_handler) {}
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void Start();
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void Shutdown();
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void InsertTask(Task task);
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void ThreadTerminated();
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private:
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Task WaitForTask();
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static void Main(uword args);
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TaskQueue queue_;
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// TODO(sgjesse): Move the monitor in TaskQueue to ThreadPool and
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// obtain it for updating terminate_.
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dart::Monitor monitor_;
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bool terminate_;
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int size_; // Number of threads.
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TaskHandler task_handler_;
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DISALLOW_COPY_AND_ASSIGN(ThreadPool);
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};
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#endif // BIN_THREAD_POOL_H_
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