forked from bartvdbraak/blender
3732508c64
task_group::is_canceling() was removed.
149 lines
3.7 KiB
C++
149 lines
3.7 KiB
C++
/*
|
|
* Copyright 2011-2013 Blender Foundation
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifndef __UTIL_TASK_H__
|
|
#define __UTIL_TASK_H__
|
|
|
|
#include "util/util_list.h"
|
|
#include "util/util_string.h"
|
|
#include "util/util_tbb.h"
|
|
#include "util/util_thread.h"
|
|
#include "util/util_vector.h"
|
|
|
|
CCL_NAMESPACE_BEGIN
|
|
|
|
class TaskPool;
|
|
class TaskScheduler;
|
|
|
|
typedef function<void(void)> TaskRunFunction;
|
|
|
|
/* Task Pool
|
|
*
|
|
* Pool of tasks that will be executed by the central TaskScheduler.For each
|
|
* pool, we can wait for all tasks to be done, or cancel them before they are
|
|
* done.
|
|
*
|
|
* TaskRunFunction may be created with std::bind or lambda expressions. */
|
|
|
|
class TaskPool {
|
|
public:
|
|
struct Summary {
|
|
/* Time spent to handle all tasks. */
|
|
double time_total;
|
|
|
|
/* Number of all tasks handled by this pool. */
|
|
int num_tasks_handled;
|
|
|
|
/* A full multi-line description of the state of the pool after
|
|
* all work is done.
|
|
*/
|
|
string full_report() const;
|
|
};
|
|
|
|
TaskPool();
|
|
~TaskPool();
|
|
|
|
void push(TaskRunFunction &&task);
|
|
|
|
void wait_work(Summary *stats = NULL); /* work and wait until all tasks are done */
|
|
void cancel(); /* cancel all tasks and wait until they are no longer executing */
|
|
|
|
static bool canceled(); /* For worker threads, test if current task pool canceled. */
|
|
|
|
protected:
|
|
tbb::task_group tbb_group;
|
|
|
|
/* ** Statistics ** */
|
|
|
|
/* Time time stamp of first task pushed. */
|
|
double start_time;
|
|
|
|
/* Number of all tasks pushed to the pool. Cleared after wait_work() and cancel(). */
|
|
int num_tasks_pushed;
|
|
};
|
|
|
|
/* Task Scheduler
|
|
*
|
|
* Central scheduler that holds running threads ready to execute tasks. A singe
|
|
* queue holds the task from all pools. */
|
|
|
|
class TaskScheduler {
|
|
public:
|
|
static void init(int num_threads = 0);
|
|
static void exit();
|
|
static void free_memory();
|
|
|
|
/* Approximate number of threads that will work on task, which may be lower
|
|
* or higher than the actual number of threads. Use as little as possible and
|
|
* leave splitting up tasks to the scheduler.. */
|
|
static int num_threads();
|
|
|
|
protected:
|
|
static thread_mutex mutex;
|
|
static int users;
|
|
static int active_num_threads;
|
|
|
|
#ifdef WITH_TBB_GLOBAL_CONTROL
|
|
static tbb::global_control *global_control;
|
|
#endif
|
|
};
|
|
|
|
/* Dedicated Task Pool
|
|
*
|
|
* Like a TaskPool, but will launch one dedicated thread to execute all tasks.
|
|
*
|
|
* The run callback that actually executes the task may be created like this:
|
|
* function_bind(&MyClass::task_execute, this, _1, _2) */
|
|
|
|
class DedicatedTaskPool {
|
|
public:
|
|
DedicatedTaskPool();
|
|
~DedicatedTaskPool();
|
|
|
|
void push(TaskRunFunction &&run, bool front = false);
|
|
|
|
void wait(); /* wait until all tasks are done */
|
|
void cancel(); /* cancel all tasks, keep worker thread running */
|
|
|
|
bool canceled(); /* for worker thread, test if canceled */
|
|
|
|
protected:
|
|
void num_decrease(int done);
|
|
void num_increase();
|
|
|
|
void thread_run();
|
|
bool thread_wait_pop(TaskRunFunction &task);
|
|
|
|
void clear();
|
|
|
|
thread_mutex num_mutex;
|
|
thread_condition_variable num_cond;
|
|
|
|
list<TaskRunFunction> queue;
|
|
thread_mutex queue_mutex;
|
|
thread_condition_variable queue_cond;
|
|
|
|
int num;
|
|
bool do_cancel;
|
|
bool do_exit;
|
|
|
|
thread *worker_thread;
|
|
};
|
|
|
|
CCL_NAMESPACE_END
|
|
|
|
#endif
|