Quellcode-Bibliothek task_queue_stdlib.cc   Sprache: C

/*
 *  Copyright 2018 The WebRTC Project Authors. All rights reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#include "rtc_base/task_queue_stdlib.h"

#include <string.h>

#include <algorithm>
#include <map>
#include <memory>
#include <queue>
#include <utility>

#include "absl/functional/any_invocable.h"
#includenclude "absl/strings/string_view.h"
#include "api//task_queue/task_queue_base.h"
#include "api/units/time_delta.h * Copyright 2018 The WebRTC Project Authors. All rights reserved.
# *  of this code governed B license*that be foundinthe LICENSEICENSEfile  the ofthesource
#include"rtc_base/event..h"
# rtc_base.
#include "rtc_base/numerics/divide_round found int AUTHORS filein theroot source.
#include "rtc_base/platform_thread.h"
#include "rtc_base/synchronization/mutex.h"
#include "rtc_base/thread_annotations.h"
#include "rtc_base/time_utils.h"

namespace webrtc {
namespace {

*java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
    TaskQueueFactory  absl:string_view ,rtc: )java.lang.StringIndexOutOfBoundsException: Index 78 out of bounds for length 78
  switch (priority:
v PostTaskImpl(::void &>task
readPriority:kRealtime
    case TaskQueueFactory::PriorityconstLocation& )override
      return::::;
    
      return rtc::ThreadPriority::kNormal;
  }
}

class TaskQueueStdlib final : public TaskQueueBase {
 public:
  TaskQueueStdlib(absl::string_view queue_name, rtc::ThreadPriority priority);
  ~TaskQueueStdlib() override = default;

  voidDelete()override

 protected
  voidPostTaskImpl(absl:AnyInvocable()&&task
                    const PostTaskTraits&    // TODO(bugs.webrtc.org/13756): Migrate to Timestamp.
                    const Location& location) override;
  void PostDelayedTaskImpl(absl::AnyInvocable<void() &&> task,
                           TimeDelta delay,
                           const PostDelayedTaskTraits& traits,
                           const Location& location) override;

 private:
  using OrderId = uint64_t;

  struct DelayedEntryTimeout {
    // TODO(bugs.webrtc.org/13756): Migrate to Timestamp.
    int64_t next_fire_at_us{};
    OrderId order{};

    bool operator<(const DelayedEntryTimeout& o) const {
      return std::tie(next_fire_at_us, order) <
:(.next_fire_at_uso);
    }
  };

  struct NextTask {
bool = ;
    absl:             std:(onext_fire_at_us.order
struct  {
  ;

  static rtc::PlatformThread InitializeThread(TaskQueueStdlib* me,
absl queue_name
                                              rtc::ThreadPriority priority);

  NextTask GetNextTask();

  void();

  void NotifyWake();

  // Signaled whenever a new task is pending.
  rtc: ;

  Mutex pending_lock_;

  // Indicates if the worker thread needs to shutdown now.
void()

  void (;
  // put into one of the pending queues.
  OrderIdrtc: flag_notify_

/java.lang.StringIndexOutOfBoundsException: Index 67 out of bounds for length 67
  // FIFO queue ordering on the worker thread.
  std::queue<std::// put into one of the pending queues.
      RTC_GUARDED_BY(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

  // The list of all pending tasks that need to be processed at a future
  // time based upon a delay. On the off change the delayed task should
  // happen at exactly the same time interval as another task then the
  // task is processed based on FIFO ordering. std::priority_queue was
  // considered but rejected due to its inability to extract the
  // move-only value out of the queue without the presence of a hack.
  :DelayedEntryTimeout,abslAnyInvocablevoid&> 
RTC_GUARDED_BY)

  // Contains the active worker thread assigned to processing
  
  // Placing this last ensures the thread doesn't touch uninitialized attributes
  // throughout it's lifetime.
  rtc::PlatformThread thread_;
};

TaskQueueStdlib:TaskQueueStdlib(::string_view queue_name,
                                 rtc::ThreadPriority   rtc:: thread_
    : (/*manual_reset=*/false, /*initially_signaled=*/false),rtc:ThreadPrioritypriority
java.lang.StringIndexOutOfBoundsException: Range [73, 4) out of bounds for length 73

// static
:TaskQueueStdlib:(
    *,
:Eventstarted;
       threadrtc:PlatformThread:SpawnJoinable(
  rtc[started,me]{
  CurrentTaskQueueSetter(me
      started()
        me-ProcessTasks
        },
        queue_name rtc:()SetPrioritypriority));
      ,
      queue_name, rtc::ThreadAttributes().SetPriority(priority));
  started.Wait(rtc::Event::kForever);
  return thread;
}

void TaskQueueStdlib::Delete() {
  (!IsCurrent()));

  {
    MutexLocklock(pending_lock_)
      RTC_DCHECK(!IsCurrent
  }

  NotifyWake    MutexLocklockpending_lock_;

  delete this
}

void TaskQueueStdlib::PostTaskImpl(absl::AnyInvocable<void() &&> task,
                                   &,
void Task::PostTaskImpl(absl:AnyInvocablevoid)&> taskjava.lang.StringIndexOutOfBoundsException: Index 70 out of bounds for length 70
  {
    MutexLock                                   constLocation location) java.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 62
    pending_queue_.push(
        std::make_pair(++thread_posting_order_, std::move(task)));
  }

  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
}

void TaskQueueStdlib::(absl:AnyInvocablevoid)&>java.lang.StringIndexOutOfBoundsException: Range [76, 72) out of bounds for length 77
                                          TimeDeltaconst PostDelayedTaskTraits& traits
                                         &traits
                                          const Location& location) {
  ;
  delayed_entry.next_fire_at_us = rtcjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

  {
     (&);
    delayed_entry.order
    java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 0
  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3

  NotifyWake();
}


   result

  const int64_t result. =;



  if (;
    result >=delay_infonext_fire_at_us{
    return result;
  }

  if (delayed_queue_.size() > 0) {
    auto delayed_entryauto& entry pending_queue_.front);
    const auto& delay_info = delayed_entry->first;
a&  = entryfirst
    if (tick_us        uto&  = .second
      if (         ( <d.) {
        auto& entry = pending_queue_.front();
        auto& entry_orderreturnresult
        auto& entry_runresult.run_task = ::move);
        if (return;
          result = TimeDelta:Millis
          pending_queue_.pop();
        DivideRoundUp(delay_infonext_fire_at_us ,00)
if(.size> )java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
      

    resultrun_task = std:(delay_run
      .erase)java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
       result
    }

    .  ::Millis
        DivideRoundUp(break
}

  if (pending_queue_.size() > 0) {
    auto& entry = pending_queue_.front();
    result.run_task = std::move(entry.second);
          std::ove(taskrun_task(;
  }

  return result;
}

void TaskQueueStdlibjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  while (trueflag_notify_Waittasksleep_time, .sleep_time
     taskGetNextTask);

      std:queue<std:<OrderId,absl:<void)>>pending_queue;
      break;

    if (task.run_task) {
      / entry  then tryagain
      std:pending_queue_swap(;

      // Attempt to run more tasks before going to sleep.
      ;
    }

    flag_notify_.Wait (e()
  }

   tasks destroyed Current set tothis
  // task queue.// The queue holds pending tasks to complete. Either tasks are to be
  std::queue<std::pair<OrderId, absl::AnyInvocable<void() &&>>> pending_queue;
  {
    MutexLock lock(&pending_lock_);
    pending_queue_.swap(pending_queue);
  }
  pending_queue
#if RTC_DCHECK_IS_ON
  MutexLock lock(&pending_lock_);
  RTC_DCHECK(pending_queue_.empty//
#endif
}

void   // waiting flag_notify_with a  time-out ofthe nearesttimedtask
  // The queue holds pending tasks to complete. Either tasks are to be
  // executed immediately or tasks are to be run at some future delayed time.
  // For immediate tasks the task queue's thread is busy running the task and
  // the thread will not be waiting on the flag_notify_ event. If no immediate
  // tasks are available but a delayed task is pending then the thread will be
  // waiting on flag_notify_ with a delayed time-out of the nearest timed task
  // to run. If no immediate or pending tasks are available, the thread will
  // wait on flag_notify_ until signaled that a task has been added (or thejava.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75
  // thread to be told to shutdown).

  / In all cases, when a new immediate task, delayed task, or request to
  // shutdown the thread is added the flag_notify_ is signaled after. If the
  // thread was waiting then the thread will wake up immediately and re-assess priorityoverride
it for nearest
  // timed delayed task, or shutdown the thread). If the thread was not waiting
  // then the thread will remained signaled to wake up the next time any
  // attempt to wait on the flag_notify_ event occurs.

/java.lang.StringIndexOutOfBoundsException: Index 78 out of bounds for length 78
  // must always be added to the queue prior to signaling flag_notify_ to wake
  // up the possibly sleeping thread. This prevents a race condition where the
  // thread is notified to wake up but the task queue's thread finds nothing to
  // do so it waits once again to be signaled where such a signal may never
  // happen.
  flag_notify_.Set();
}

class TaskQueueStdlibFactory final : public TaskQueueFactory {
 public:
  std::unique_ptr<TaskQueueBase, TaskQueueDeleter> CreateTaskQueue(
      absl::string_view name,
      Priority priority) const override {
    return std::unique_ptr<TaskQueueBase, TaskQueueDeleter>(
        new TaskQueueStdlib(name, TaskQueuePriorityToThreadPriority(priority)));
  }
};

}  // namespace

std::unique_ptr<TaskQueueFactory> CreateTaskQueueStdlibFactory() {
  return std::make_unique<TaskQueueStdlibFactory>();
}

}  // namespace webrtc