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allow easier scheduling of tasks in single threaded mode by adding a

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condition callback to task_queue_wait.
This commit is contained in:
aliaspider 2017-05-22 11:18:42 +01:00
parent dd5bc1a951
commit b00776b09e
2 changed files with 15 additions and 9 deletions
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9
libretro-common/include/queues/task_queue.h
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@ -57,6 +57,8 @@ typedef void (*retro_task_queue_msg_t)(const char *msg,
typedef bool (*retro_task_retriever_t)(retro_task_t *task, void *data);
typedef bool (*retro_task_condition_fn_t)(void *data);
typedef struct
{
char *source_file;
@ -200,9 +202,12 @@ void task_queue_check(void);
* The task will start as soon as possible. */
void task_queue_push(retro_task_t *task);
/* Blocks until all tasks have finished.
/* Blocks until all tasks have finished
* will return early if cond is not NULL
* and cond(data) returns false.
* This must only be called from the main thread. */
void task_queue_wait(void);
void task_queue_wait(retro_task_condition_fn_t cond, void* data);
/* Sends a signal to terminate all the tasks.
*

15
libretro-common/queues/task_queue.c
View File

@ -47,7 +47,7 @@ struct retro_task_impl
void (*push_running)(retro_task_t *);
void (*cancel)(void *);
void (*reset)(void);
void (*wait)(void);
void (*wait)(retro_task_condition_fn_t, void *);
void (*gather)(void);
bool (*find)(retro_task_finder_t, void*);
void (*retrieve)(task_retriever_data_t *data);
@ -189,9 +189,9 @@ static void retro_task_regular_gather(void)
retro_task_internal_gather();
}
static void retro_task_regular_wait(void)
static void retro_task_regular_wait(retro_task_condition_fn_t cond, void* data)
{
while (tasks_running.front)
while (tasks_running.front && (!cond || cond(data)))
retro_task_regular_gather();
}
@ -373,7 +373,7 @@ static void retro_task_threaded_gather(void)
slock_unlock(property_lock);
}
static void retro_task_threaded_wait(void)
static void retro_task_threaded_wait(retro_task_condition_fn_t cond, void* data)
{
bool wait = false;
@ -382,7 +382,8 @@ static void retro_task_threaded_wait(void)
retro_task_threaded_gather();
slock_lock(running_lock);
wait = (tasks_running.front != NULL);
wait = (tasks_running.front != NULL) &&
(!cond || cond(data));
slock_unlock(running_lock);
} while (wait);
}
@ -637,9 +638,9 @@ void task_queue_push(retro_task_t *task)
impl_current->push_running(task);
}
void task_queue_wait(void)
void task_queue_wait(retro_task_condition_fn_t cond, void* data)
{
impl_current->wait();
impl_current->wait(cond, data);
}
void task_queue_reset(void)