mirror of
https://github.com/libretro/RetroArch.git
synced 2024-11-26 09:41:15 +00:00
630 lines
14 KiB
C
630 lines
14 KiB
C
/* Copyright (C) 2010-2016 The RetroArch team
|
|
*
|
|
* ---------------------------------------------------------------------------------------
|
|
* The following license statement only applies to this file (task_queue.c).
|
|
* ---------------------------------------------------------------------------------------
|
|
*
|
|
* Permission is hereby granted, free of charge,
|
|
* to any person obtaining a copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation the rights to
|
|
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
|
|
* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
|
|
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
|
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
|
|
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stdarg.h>
|
|
|
|
#include <queues/task_queue.h>
|
|
|
|
#ifdef HAVE_THREADS
|
|
#include <rthreads/rthreads.h>
|
|
#endif
|
|
|
|
typedef struct
|
|
{
|
|
retro_task_t *front;
|
|
retro_task_t *back;
|
|
} task_queue_t;
|
|
|
|
struct retro_task_impl
|
|
{
|
|
void (*push_running)(retro_task_t *);
|
|
void (*cancel)(void *);
|
|
void (*reset)(void);
|
|
void (*wait)(void);
|
|
void (*gather)(void);
|
|
bool (*find)(retro_task_finder_t, void*);
|
|
void (*retrieve)(task_retriever_data_t *data);
|
|
void (*init)(void);
|
|
void (*deinit)(void);
|
|
};
|
|
|
|
static task_queue_t tasks_running = {NULL, NULL};
|
|
static task_queue_t tasks_finished = {NULL, NULL};
|
|
|
|
static void task_queue_msg_push(unsigned prio, unsigned duration,
|
|
bool flush, const char *fmt, ...)
|
|
{
|
|
#ifdef RARCH_INTERNAL
|
|
extern void runloop_msg_queue_push(const char *msg, unsigned prio,
|
|
unsigned duration, bool flush);
|
|
#endif
|
|
char buf[1024];
|
|
va_list ap;
|
|
|
|
va_start(ap, fmt);
|
|
vsnprintf(buf, sizeof(buf), fmt, ap);
|
|
va_end(ap);
|
|
|
|
/* print something here */
|
|
|
|
#ifdef RARCH_INTERNAL
|
|
/* TODO/FIXME - ugly */
|
|
runloop_msg_queue_push(buf, prio, duration, flush);
|
|
#endif
|
|
}
|
|
|
|
static void task_queue_push_progress(retro_task_t *task)
|
|
{
|
|
if (task->title && !task->mute)
|
|
{
|
|
if (task->finished)
|
|
{
|
|
if (task->error)
|
|
task_queue_msg_push(1, 60, true, "%s: %s",
|
|
"Task failed\n", task->title);
|
|
else
|
|
task_queue_msg_push(1, 60, true, "100%%: %s", task->title);
|
|
}
|
|
else
|
|
{
|
|
if (task->progress >= 0 && task->progress <= 100)
|
|
task_queue_msg_push(1, 60, true, "%i%%: %s",
|
|
task->progress, task->title);
|
|
else
|
|
task_queue_msg_push(1, 60, true, "%s...", task->title);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void task_queue_put(task_queue_t *queue, retro_task_t *task)
|
|
{
|
|
task->next = NULL;
|
|
|
|
if (queue->front)
|
|
queue->back->next = task;
|
|
else
|
|
queue->front = task;
|
|
|
|
queue->back = task;
|
|
}
|
|
|
|
static retro_task_t *task_queue_get(task_queue_t *queue)
|
|
{
|
|
retro_task_t *task = queue->front;
|
|
|
|
if (task)
|
|
{
|
|
queue->front = task->next;
|
|
task->next = NULL;
|
|
}
|
|
|
|
return task;
|
|
}
|
|
|
|
static void retro_task_internal_gather(void)
|
|
{
|
|
retro_task_t *task = NULL;
|
|
while ((task = task_queue_get(&tasks_finished)) != NULL)
|
|
{
|
|
task_queue_push_progress(task);
|
|
|
|
if (task->callback)
|
|
task->callback(task->task_data, task->user_data, task->error);
|
|
|
|
if (task->cleanup)
|
|
task->cleanup(task);
|
|
|
|
if (task->error)
|
|
free(task->error);
|
|
|
|
if (task->title)
|
|
free(task->title);
|
|
|
|
free(task);
|
|
}
|
|
}
|
|
|
|
static void retro_task_regular_push_running(retro_task_t *task)
|
|
{
|
|
task_queue_put(&tasks_running, task);
|
|
}
|
|
|
|
static void retro_task_regular_cancel(void *task)
|
|
{
|
|
retro_task_t *t = (retro_task_t*)task;
|
|
t->cancelled = true;
|
|
}
|
|
|
|
static void retro_task_regular_gather(void)
|
|
{
|
|
retro_task_t *task = NULL;
|
|
retro_task_t *queue = NULL;
|
|
retro_task_t *next = NULL;
|
|
|
|
while ((task = task_queue_get(&tasks_running)) != NULL)
|
|
{
|
|
task->next = queue;
|
|
queue = task;
|
|
}
|
|
|
|
for (task = queue; task; task = next)
|
|
{
|
|
next = task->next;
|
|
task->handler(task);
|
|
|
|
task_queue_push_progress(task);
|
|
|
|
if (task->finished)
|
|
task_queue_put(&tasks_finished, task);
|
|
else
|
|
retro_task_regular_push_running(task);
|
|
}
|
|
|
|
retro_task_internal_gather();
|
|
}
|
|
|
|
static void retro_task_regular_wait(void)
|
|
{
|
|
while (tasks_running.front)
|
|
retro_task_regular_gather();
|
|
}
|
|
|
|
static void retro_task_regular_reset(void)
|
|
{
|
|
retro_task_t *task = tasks_running.front;
|
|
|
|
for (; task; task = task->next)
|
|
task->cancelled = true;
|
|
}
|
|
|
|
static void retro_task_regular_init(void)
|
|
{
|
|
}
|
|
|
|
static void retro_task_regular_deinit(void)
|
|
{
|
|
}
|
|
|
|
static bool retro_task_regular_find(retro_task_finder_t func, void *user_data)
|
|
{
|
|
retro_task_t *task = tasks_running.front;
|
|
|
|
for (; task; task = task->next)
|
|
{
|
|
if (func(task, user_data))
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static void retro_task_regular_retrieve(task_retriever_data_t *data)
|
|
{
|
|
retro_task_t *task = NULL;
|
|
task_retriever_info_t *tail = NULL;
|
|
|
|
/* Parse all running tasks and handle matching handlers */
|
|
for (task = tasks_running.front; task != NULL; task = task->next)
|
|
{
|
|
task_retriever_info_t *info = NULL;
|
|
if (task->handler != data->handler)
|
|
continue;
|
|
|
|
/* Create new link */
|
|
info = (task_retriever_info_t*)malloc(sizeof(task_retriever_info_t));
|
|
info->data = malloc(data->element_size);
|
|
info->next = NULL;
|
|
|
|
/* Call retriever function and fill info-specific data */
|
|
if (!data->func(task, info->data))
|
|
{
|
|
free(info->data);
|
|
free(info);
|
|
continue;
|
|
}
|
|
|
|
/* Add link to list */
|
|
if (data->list)
|
|
{
|
|
if (tail)
|
|
{
|
|
tail->next = info;
|
|
tail = tail->next;
|
|
}
|
|
else
|
|
tail = info;
|
|
}
|
|
else
|
|
{
|
|
data->list = info;
|
|
tail = data->list;
|
|
}
|
|
}
|
|
}
|
|
|
|
static struct retro_task_impl impl_regular = {
|
|
retro_task_regular_push_running,
|
|
retro_task_regular_cancel,
|
|
retro_task_regular_reset,
|
|
retro_task_regular_wait,
|
|
retro_task_regular_gather,
|
|
retro_task_regular_find,
|
|
retro_task_regular_retrieve,
|
|
retro_task_regular_init,
|
|
retro_task_regular_deinit
|
|
};
|
|
|
|
#ifdef HAVE_THREADS
|
|
static slock_t *running_lock = NULL;
|
|
static slock_t *finished_lock = NULL;
|
|
static scond_t *worker_cond = NULL;
|
|
static sthread_t *worker_thread = NULL;
|
|
static bool worker_continue = true; /* use running_lock when touching it */
|
|
|
|
static void task_queue_remove(task_queue_t *queue, retro_task_t *task)
|
|
{
|
|
retro_task_t *t = NULL;
|
|
|
|
/* Remove first element if needed */
|
|
if (task == queue->front)
|
|
{
|
|
queue->front = task->next;
|
|
task->next = NULL;
|
|
return;
|
|
}
|
|
|
|
/* Parse queue */
|
|
t = queue->front;
|
|
while (t && t->next)
|
|
{
|
|
/* Remove task and update queue */
|
|
if (t->next == task)
|
|
{
|
|
t->next = task->next;
|
|
task->next = NULL;
|
|
break;
|
|
}
|
|
|
|
/* Update iterator */
|
|
t = t->next;
|
|
}
|
|
}
|
|
|
|
static void retro_task_threaded_push_running(retro_task_t *task)
|
|
{
|
|
slock_lock(running_lock);
|
|
task_queue_put(&tasks_running, task);
|
|
scond_signal(worker_cond);
|
|
slock_unlock(running_lock);
|
|
}
|
|
|
|
static void retro_task_threaded_cancel(void *task)
|
|
{
|
|
retro_task_t *t;
|
|
|
|
slock_lock(running_lock);
|
|
|
|
for (t = tasks_running.front; t; t = t->next)
|
|
{
|
|
if (t == task)
|
|
{
|
|
t->cancelled = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
slock_unlock(running_lock);
|
|
}
|
|
|
|
static void retro_task_threaded_gather(void)
|
|
{
|
|
retro_task_t *task = NULL;
|
|
|
|
slock_lock(running_lock);
|
|
for (task = tasks_running.front; task; task = task->next)
|
|
task_queue_push_progress(task);
|
|
|
|
slock_unlock(running_lock);
|
|
|
|
slock_lock(finished_lock);
|
|
retro_task_internal_gather();
|
|
slock_unlock(finished_lock);
|
|
}
|
|
|
|
static void retro_task_threaded_wait(void)
|
|
{
|
|
bool wait = false;
|
|
|
|
do
|
|
{
|
|
retro_task_threaded_gather();
|
|
|
|
slock_lock(running_lock);
|
|
wait = (tasks_running.front != NULL);
|
|
slock_unlock(running_lock);
|
|
} while (wait);
|
|
}
|
|
|
|
static void retro_task_threaded_reset(void)
|
|
{
|
|
retro_task_t *task = NULL;
|
|
|
|
slock_lock(running_lock);
|
|
for (task = tasks_running.front; task; task = task->next)
|
|
task->cancelled = true;
|
|
slock_unlock(running_lock);
|
|
}
|
|
|
|
|
|
static bool retro_task_threaded_find(
|
|
retro_task_finder_t func, void *user_data)
|
|
{
|
|
retro_task_t *task = NULL;
|
|
bool result = false;
|
|
|
|
slock_lock(running_lock);
|
|
for (task = tasks_running.front; task; task = task->next)
|
|
{
|
|
if (func(task, user_data))
|
|
{
|
|
result = true;
|
|
break;
|
|
}
|
|
}
|
|
slock_unlock(running_lock);
|
|
|
|
return result;
|
|
}
|
|
|
|
static void retro_task_threaded_retrieve(task_retriever_data_t *data)
|
|
{
|
|
/* Protect access to running tasks */
|
|
slock_lock(running_lock);
|
|
|
|
/* Call regular retrieve function */
|
|
retro_task_regular_retrieve(data);
|
|
|
|
/* Release access to running tasks */
|
|
slock_unlock(running_lock);
|
|
}
|
|
|
|
static void threaded_worker(void *userdata)
|
|
{
|
|
(void)userdata;
|
|
|
|
for (;;)
|
|
{
|
|
retro_task_t *task = NULL;
|
|
|
|
if (!worker_continue)
|
|
break; /* should we keep running until all tasks finished? */
|
|
|
|
slock_lock(running_lock);
|
|
|
|
/* Get first task to run */
|
|
task = tasks_running.front;
|
|
if (task == NULL)
|
|
{
|
|
scond_wait(worker_cond, running_lock);
|
|
slock_unlock(running_lock);
|
|
continue;
|
|
}
|
|
|
|
slock_unlock(running_lock);
|
|
|
|
task->handler(task);
|
|
|
|
slock_lock(running_lock);
|
|
task_queue_remove(&tasks_running, task);
|
|
slock_unlock(running_lock);
|
|
|
|
/* Update queue */
|
|
if (!task->finished)
|
|
{
|
|
/* Re-add task to running queue */
|
|
retro_task_threaded_push_running(task);
|
|
}
|
|
else
|
|
{
|
|
/* Add task to finished queue */
|
|
slock_lock(finished_lock);
|
|
task_queue_put(&tasks_finished, task);
|
|
slock_unlock(finished_lock);
|
|
}
|
|
|
|
#if 0
|
|
retro_sleep(10);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
static void retro_task_threaded_init(void)
|
|
{
|
|
running_lock = slock_new();
|
|
finished_lock = slock_new();
|
|
worker_cond = scond_new();
|
|
|
|
slock_lock(running_lock);
|
|
worker_continue = true;
|
|
slock_unlock(running_lock);
|
|
|
|
worker_thread = sthread_create(threaded_worker, NULL);
|
|
}
|
|
|
|
static void retro_task_threaded_deinit(void)
|
|
{
|
|
slock_lock(running_lock);
|
|
worker_continue = false;
|
|
scond_signal(worker_cond);
|
|
slock_unlock(running_lock);
|
|
|
|
sthread_join(worker_thread);
|
|
|
|
scond_free(worker_cond);
|
|
slock_free(running_lock);
|
|
slock_free(finished_lock);
|
|
|
|
worker_thread = NULL;
|
|
worker_cond = NULL;
|
|
running_lock = NULL;
|
|
finished_lock = NULL;
|
|
}
|
|
|
|
static struct retro_task_impl impl_threaded = {
|
|
retro_task_threaded_push_running,
|
|
retro_task_threaded_cancel,
|
|
retro_task_threaded_reset,
|
|
retro_task_threaded_wait,
|
|
retro_task_threaded_gather,
|
|
retro_task_threaded_find,
|
|
retro_task_threaded_retrieve,
|
|
retro_task_threaded_init,
|
|
retro_task_threaded_deinit
|
|
};
|
|
#endif
|
|
|
|
bool task_queue_ctl(enum task_queue_ctl_state state, void *data)
|
|
{
|
|
static struct retro_task_impl *impl_current = NULL;
|
|
static bool task_threaded_enable = false;
|
|
|
|
switch (state)
|
|
{
|
|
case TASK_QUEUE_CTL_DEINIT:
|
|
if (impl_current)
|
|
impl_current->deinit();
|
|
impl_current = NULL;
|
|
break;
|
|
case TASK_QUEUE_CTL_SET_THREADED:
|
|
task_threaded_enable = true;
|
|
break;
|
|
case TASK_QUEUE_CTL_UNSET_THREADED:
|
|
task_threaded_enable = false;
|
|
break;
|
|
case TASK_QUEUE_CTL_IS_THREADED:
|
|
return task_threaded_enable;
|
|
case TASK_QUEUE_CTL_INIT:
|
|
{
|
|
#ifdef HAVE_THREADS
|
|
bool *boolean_val = (bool*)data;
|
|
#endif
|
|
|
|
impl_current = &impl_regular;
|
|
#ifdef HAVE_THREADS
|
|
if (boolean_val && *boolean_val)
|
|
{
|
|
task_queue_ctl(TASK_QUEUE_CTL_SET_THREADED, NULL);
|
|
impl_current = &impl_threaded;
|
|
}
|
|
#endif
|
|
|
|
impl_current->init();
|
|
}
|
|
break;
|
|
case TASK_QUEUE_CTL_FIND:
|
|
{
|
|
task_finder_data_t *find_data = (task_finder_data_t*)data;
|
|
if (!impl_current->find(find_data->func, find_data->userdata))
|
|
return false;
|
|
}
|
|
break;
|
|
case TASK_QUEUE_CTL_RETRIEVE:
|
|
impl_current->retrieve((task_retriever_data_t*)data);
|
|
break;
|
|
case TASK_QUEUE_CTL_CHECK:
|
|
{
|
|
#ifdef HAVE_THREADS
|
|
bool current_threaded = (impl_current == &impl_threaded);
|
|
bool want_threaded =
|
|
task_queue_ctl(TASK_QUEUE_CTL_IS_THREADED, NULL);
|
|
|
|
if (want_threaded != current_threaded)
|
|
task_queue_ctl(TASK_QUEUE_CTL_DEINIT, NULL);
|
|
|
|
if (!impl_current)
|
|
task_queue_ctl(TASK_QUEUE_CTL_INIT, NULL);
|
|
#endif
|
|
|
|
impl_current->gather();
|
|
}
|
|
break;
|
|
case TASK_QUEUE_CTL_PUSH:
|
|
{
|
|
/* The lack of NULL checks in the following functions
|
|
* is proposital to ensure correct control flow by the users. */
|
|
retro_task_t *task = (retro_task_t*)data;
|
|
impl_current->push_running(task);
|
|
break;
|
|
}
|
|
case TASK_QUEUE_CTL_RESET:
|
|
impl_current->reset();
|
|
break;
|
|
case TASK_QUEUE_CTL_WAIT:
|
|
impl_current->wait();
|
|
break;
|
|
case TASK_QUEUE_CTL_CANCEL:
|
|
impl_current->cancel(data);
|
|
break;
|
|
case TASK_QUEUE_CTL_NONE:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void task_queue_cancel_task(void *task)
|
|
{
|
|
task_queue_ctl(TASK_QUEUE_CTL_CANCEL, task);
|
|
}
|
|
|
|
void *task_queue_retriever_info_next(task_retriever_info_t **link)
|
|
{
|
|
void *data = NULL;
|
|
|
|
/* Grab data and move to next link */
|
|
if (*link)
|
|
{
|
|
data = (*link)->data;
|
|
*link = (*link)->next;
|
|
}
|
|
|
|
return data;
|
|
}
|
|
|
|
void task_queue_retriever_info_free(task_retriever_info_t *list)
|
|
{
|
|
task_retriever_info_t *info;
|
|
|
|
/* Free links including retriever-specific data */
|
|
while (list)
|
|
{
|
|
info = list->next;
|
|
free(list->data);
|
|
free(list);
|
|
list = info;
|
|
}
|
|
}
|
|
|