The Tor Browser: ipc/chromium/src/base/worker_pool

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 // Copyright (c) 2008 The Chromium Authors. All rights reserved.

     2 // Use of this source code is governed by a BSD-style license that can be

     3 // found in the LICENSE file.

     5 #include "base/worker_pool.h"

     7 #import <Foundation/Foundation.h>

     9 #include "base/logging.h"

    10 #import "base/singleton_objc.h"

    11 #include "base/task.h"

    13 // TaskOperation adapts Task->Run() for use in an NSOperationQueue.

    14 @interface TaskOperation : NSOperation {

    15  @private

    16   Task* task_;  // (strong)

    17 }

    19 // Returns an autoreleased instance of TaskOperation.  See -initWithTask: for

    20 // details.

    21 + (id)taskOperationWithTask:(Task*)task;

    23 // Designated initializer.  |task| is adopted as the Task* whose Run method

    24 // this operation will call when executed.

    25 - (id)initWithTask:(Task*)task;

    27 @end

    29 @implementation TaskOperation

    31 + (id)taskOperationWithTask:(Task*)task {

    32   return [[[TaskOperation alloc] initWithTask:task] autorelease];

    33 }

    35 - (id)init {

    36   return [self initWithTask:NULL];

    37 }

    39 - (id)initWithTask:(Task*)task {

    40   if ((self = [super init])) {

    41     task_ = task;

    42   }

    43   return self;

    44 }

    46 - (void)main {

    47   DCHECK(task_) << "-[TaskOperation main] called with no task";

    48   task_->Run();

    49   delete task_;

    50   task_ = NULL;

    51 }

    53 - (void)dealloc {

    54   DCHECK(!task_) << "-[TaskOperation dealloc] called on unused TaskOperation";

    55   delete task_;

    56   [super dealloc];

    57 }

    59 @end

    61 bool WorkerPool::PostTask(const tracked_objects::Location& from_here,

    62                           Task* task, bool task_is_slow) {

    63   // Ignore |task_is_slow|, it doesn't map directly to any tunable aspect of

    64   // an NSOperation.

    66   task->SetBirthPlace(from_here);

    68   NSOperationQueue* operation_queue = SingletonObjC<NSOperationQueue>::get();

    69   [operation_queue addOperation:[TaskOperation taskOperationWithTask:task]];

    71   return true;

    72 }

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