diff options
Diffstat (limited to 'misc/thread_pool.h')
-rw-r--r-- | misc/thread_pool.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/misc/thread_pool.h b/misc/thread_pool.h index 7d5aed0531..4c15c0b5c5 100644 --- a/misc/thread_pool.h +++ b/misc/thread_pool.h @@ -3,9 +3,26 @@ struct mp_thread_pool; +// Create a thread pool with the given number of worker threads. This can return +// NULL if the worker threads could not be created. The thread pool can be +// destroyed with talloc_free(pool), or indirectly with talloc_free(ta_parent). +// If there are still work items on freeing, it will block until all work items +// are done, and the threads terminate. +// init_threads is the number of threads created in this function (and it fails +// if it could not be done). min_threads must be >=, if it's >, then the +// remaining threads will be created on demand, but never destroyed. +// If init_threads > 0, then mp_thread_pool_queue() can never fail. +// If init_threads == 0, mp_thread_pool_create() itself can never fail. struct mp_thread_pool *mp_thread_pool_create(void *ta_parent, int init_threads, int min_threads, int max_threads); +// Queue a function to be run on a worker thread: fn(fn_ctx) +// If no worker thread is currently available, it's appended to a list in memory +// with unbounded size. This function always returns immediately. +// Concurrent queue calls are allowed, as long as it does not overlap with +// pool destruction. +// This function is explicitly thread-safe. +// Cannot fail if thread pool was created with at least 1 thread. bool mp_thread_pool_queue(struct mp_thread_pool *pool, void (*fn)(void *ctx), void *fn_ctx); |