From d6de8d8f32755b6ef0f887b317e7f5db026b48b8 Mon Sep 17 00:00:00 2001 From: David Oberhollenzer Date: Sat, 22 Feb 2020 17:59:46 +0100 Subject: Cleanup block processor: Merge destructors for Windows & pthreads Since the merged destructor checks if the objects it destroys were actually initialized, the pthread implementation can also replace its error path cleanup with simply calling the destructor. Signed-off-by: David Oberhollenzer --- lib/sqfs/block_processor/winpthread.c | 103 +++++++++++----------------------- 1 file changed, 32 insertions(+), 71 deletions(-) (limited to 'lib/sqfs/block_processor') diff --git a/lib/sqfs/block_processor/winpthread.c b/lib/sqfs/block_processor/winpthread.c index 47408a7..2ecfbfd 100644 --- a/lib/sqfs/block_processor/winpthread.c +++ b/lib/sqfs/block_processor/winpthread.c @@ -14,6 +14,13 @@ # define UNLOCK(mtx) LeaveCriticalSection(mtx) # define AWAIT(cond, mtx) SleepConditionVariableCS(cond, mtx, INFINITE) # define SIGNAL_ALL(cond) WakeAllConditionVariable(cond) +# define THREAD_JOIN(t) \ + if (t != NULL) { \ + WaitForSingleObject(t, INFINITE); \ + CloseHandle(t); \ + } +# define MUTEX_DESTROY(mtx) DeleteCriticalSection(mtx) +# define CONDITION_DESTROY(cond) # define THREAD_EXIT_SUCCESS 0 # define THREAD_TYPE DWORD WINAPI # define THREAD_ARG LPVOID @@ -27,6 +34,9 @@ # define UNLOCK(mtx) pthread_mutex_unlock(mtx) # define AWAIT(cond, mtx) pthread_cond_wait(cond, mtx) # define SIGNAL_ALL(cond) pthread_cond_broadcast(cond) +# define THREAD_JOIN(t) if (t > 0) { pthread_join(t, NULL); } +# define MUTEX_DESTROY(mtx) pthread_mutex_destroy(mtx) +# define CONDITION_DESTROY(cond) pthread_cond_destroy(cond) # define THREAD_EXIT_SUCCESS NULL # define THREAD_TYPE void * # define THREAD_ARG void * @@ -154,40 +164,40 @@ static THREAD_TYPE worker_proc(THREAD_ARG arg) return THREAD_EXIT_SUCCESS; } -#if defined(_WIN32) || defined(__WINDOWS__) static void block_processor_destroy(sqfs_object_t *obj) { thread_pool_processor_t *proc = (thread_pool_processor_t *)obj; unsigned int i; - EnterCriticalSection(&proc->mtx); + LOCK(&proc->mtx); proc->status = -1; - WakeAllConditionVariable(&proc->queue_cond); - LeaveCriticalSection(&proc->mtx); + SIGNAL_ALL(&proc->queue_cond); + UNLOCK(&proc->mtx); for (i = 0; i < proc->num_workers; ++i) { - if (proc->workers[i] == NULL) - continue; - - if (proc->workers[i]->thread != NULL) { - WaitForSingleObject(proc->workers[i]->thread, INFINITE); - CloseHandle(proc->workers[i]->thread); - } + if (proc->workers[i] != NULL) { + THREAD_JOIN(proc->workers[i]->thread); - if (proc->workers[i]->cmp != NULL) - sqfs_destroy(proc->workers[i]->cmp); + if (proc->workers[i]->cmp != NULL) + sqfs_destroy(proc->workers[i]->cmp); - free(proc->workers[i]); + free(proc->workers[i]); + } } - DeleteCriticalSection(&proc->mtx); + CONDITION_DESTROY(&proc->done_cond); + CONDITION_DESTROY(&proc->queue_cond); + MUTEX_DESTROY(&proc->mtx); + free_blk_list(proc->proc_queue); + free_blk_list(proc->io_queue); free_blk_list(proc->done); free(proc->base.blk_current); free(proc->base.frag_block); free(proc); } +#if defined(_WIN32) || defined(__WINDOWS__) sqfs_block_processor_t *sqfs_block_processor_create(size_t max_block_size, sqfs_compressor_t *cmp, unsigned int num_workers, @@ -240,38 +250,10 @@ sqfs_block_processor_t *sqfs_block_processor_create(size_t max_block_size, return (sqfs_block_processor_t *)proc; fail: - block_processor_destroy(proc); + block_processor_destroy((sqfs_object_t *)proc); return NULL; } #else -static void block_processor_destroy(sqfs_object_t *obj) -{ - thread_pool_processor_t *proc = (thread_pool_processor_t *)obj; - unsigned int i; - - pthread_mutex_lock(&proc->mtx); - proc->status = -1; - pthread_cond_broadcast(&proc->queue_cond); - pthread_mutex_unlock(&proc->mtx); - - for (i = 0; i < proc->num_workers; ++i) { - pthread_join(proc->workers[i]->thread, NULL); - - sqfs_destroy(proc->workers[i]->cmp); - free(proc->workers[i]); - } - - pthread_cond_destroy(&proc->done_cond); - pthread_cond_destroy(&proc->queue_cond); - pthread_mutex_destroy(&proc->mtx); - - free_blk_list(proc->proc_queue); - free_blk_list(proc->done); - free(proc->base.blk_current); - free(proc->base.frag_block); - free(proc); -} - sqfs_block_processor_t *sqfs_block_processor_create(size_t max_block_size, sqfs_compressor_t *cmp, unsigned int num_workers, @@ -309,13 +291,13 @@ sqfs_block_processor_t *sqfs_block_processor_create(size_t max_block_size, 1, max_block_size); if (proc->workers[i] == NULL) - goto fail_init; + goto fail; proc->workers[i]->shared = proc; proc->workers[i]->cmp = cmp->create_copy(cmp); if (proc->workers[i]->cmp == NULL) - goto fail_init; + goto fail; } sigfillset(&set); @@ -326,37 +308,16 @@ sqfs_block_processor_t *sqfs_block_processor_create(size_t max_block_size, worker_proc, proc->workers[i]); if (ret != 0) - goto fail_thread; + goto fail_sigmask; } pthread_sigmask(SIG_SETMASK, &oldset, NULL); return (sqfs_block_processor_t *)proc; -fail_thread: - pthread_mutex_lock(&proc->mtx); - proc->status = -1; - pthread_cond_broadcast(&proc->queue_cond); - pthread_mutex_unlock(&proc->mtx); - - for (i = 0; i < num_workers; ++i) { - if (proc->workers[i]->thread > 0) { - pthread_join(proc->workers[i]->thread, NULL); - } - } +fail_sigmask: pthread_sigmask(SIG_SETMASK, &oldset, NULL); -fail_init: - for (i = 0; i < num_workers; ++i) { - if (proc->workers[i] != NULL) { - if (proc->workers[i]->cmp != NULL) - sqfs_destroy(proc->workers[i]->cmp); - - free(proc->workers[i]); - } - } - pthread_cond_destroy(&proc->done_cond); - pthread_cond_destroy(&proc->queue_cond); - pthread_mutex_destroy(&proc->mtx); - free(proc); +fail: + block_processor_destroy((sqfs_object_t *)proc); return NULL; } #endif -- cgit v1.2.3