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Diffstat (limited to 'lib/sqfs/data_writer/winpthread.c')
-rw-r--r--lib/sqfs/data_writer/winpthread.c450
1 files changed, 0 insertions, 450 deletions
diff --git a/lib/sqfs/data_writer/winpthread.c b/lib/sqfs/data_writer/winpthread.c
deleted file mode 100644
index e575859..0000000
--- a/lib/sqfs/data_writer/winpthread.c
+++ /dev/null
@@ -1,450 +0,0 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
-/*
- * winpthread.c
- *
- * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
- */
-#define SQFS_BUILDING_DLL
-#include "internal.h"
-
-#if defined(_WIN32) || defined(__WINDOWS__)
-# define LOCK(mtx) EnterCriticalSection(mtx)
-# define UNLOCK(mtx) LeaveCriticalSection(mtx)
-# define AWAIT(cond, mtx) SleepConditionVariableCS(cond, mtx, INFINITE)
-# define SIGNAL_ALL(cond) WakeAllConditionVariable(cond)
-# define THREAD_EXIT_SUCCESS 0
-# define THREAD_TYPE DWORD WINAPI
-# define THREAD_ARG LPVOID
-# define THREAD_HANDLE HANDLE
-#else
-# define LOCK(mtx) pthread_mutex_lock(mtx)
-# 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_EXIT_SUCCESS NULL
-# define THREAD_TYPE void *
-# define THREAD_ARG void *
-# define THREAD_HANDLE pthread_t
-#endif
-
-struct compress_worker_t {
- sqfs_data_writer_t *shared;
- sqfs_compressor_t *cmp;
- THREAD_HANDLE thread;
- sqfs_u8 scratch[];
-};
-
-static THREAD_TYPE worker_proc(THREAD_ARG arg)
-{
- compress_worker_t *worker = arg;
- sqfs_data_writer_t *shared = worker->shared;
- sqfs_block_t *it, *prev, *blk = NULL;
- int status = 0;
-
- for (;;) {
- LOCK(&shared->mtx);
- if (blk != NULL) {
- it = shared->done;
- prev = NULL;
-
- while (it != NULL) {
- if (it->sequence_number >= blk->sequence_number)
- break;
- prev = it;
- it = it->next;
- }
-
- if (prev == NULL) {
- blk->next = shared->done;
- shared->done = blk;
- } else {
- blk->next = prev->next;
- prev->next = blk;
- }
-
- if (status != 0 && shared->status == 0)
- shared->status = status;
- SIGNAL_ALL(&shared->done_cond);
- }
-
- while (shared->queue == NULL && shared->status == 0)
- AWAIT(&shared->queue_cond, &shared->mtx);
-
- if (shared->status == 0) {
- blk = shared->queue;
- shared->queue = blk->next;
- blk->next = NULL;
-
- if (shared->queue == NULL)
- shared->queue_last = NULL;
- } else {
- blk = NULL;
- }
- UNLOCK(&shared->mtx);
-
- if (blk == NULL)
- break;
-
- status = data_writer_do_block(blk, worker->cmp,
- worker->scratch,
- shared->max_block_size);
- }
-
- return THREAD_EXIT_SUCCESS;
-}
-
-#if defined(_WIN32) || defined(__WINDOWS__)
-sqfs_data_writer_t *sqfs_data_writer_create(size_t max_block_size,
- sqfs_compressor_t *cmp,
- unsigned int num_workers,
- size_t max_backlog,
- size_t devblksz,
- sqfs_file_t *file)
-{
- sqfs_data_writer_t *proc;
- unsigned int i;
-
- if (num_workers < 1)
- num_workers = 1;
-
- proc = alloc_flex(sizeof(*proc),
- sizeof(proc->workers[0]), num_workers);
- if (proc == NULL)
- return NULL;
-
- InitializeCriticalSection(&proc->mtx);
- InitializeConditionVariable(&proc->queue_cond);
- InitializeConditionVariable(&proc->done_cond);
-
- if (data_writer_init(proc, max_block_size, cmp, num_workers,
- max_backlog, devblksz, file)) {
- goto fail;
- }
-
- for (i = 0; i < num_workers; ++i) {
- proc->workers[i] = alloc_flex(sizeof(compress_worker_t),
- 1, max_block_size);
-
- if (proc->workers[i] == NULL)
- goto fail;
-
- proc->workers[i]->shared = proc;
- proc->workers[i]->cmp = cmp->create_copy(cmp);
-
- if (proc->workers[i]->cmp == NULL)
- goto fail;
-
- proc->workers[i]->thread = CreateThread(NULL, 0, worker_proc,
- proc->workers[i], 0, 0);
- if (proc->workers[i]->thread == NULL)
- goto fail;
- }
-
- return proc;
-fail:
- sqfs_data_writer_destroy(proc);
- return NULL;
-}
-
-void sqfs_data_writer_destroy(sqfs_data_writer_t *proc)
-{
- unsigned int i;
-
- EnterCriticalSection(&proc->mtx);
- proc->status = -1;
- WakeAllConditionVariable(&proc->queue_cond);
- LeaveCriticalSection(&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]->cmp != NULL)
- proc->workers[i]->cmp->destroy(proc->workers[i]->cmp);
-
- free(proc->workers[i]);
- }
-
- DeleteCriticalSection(&proc->mtx);
- data_writer_cleanup(proc);
-}
-#else
-sqfs_data_writer_t *sqfs_data_writer_create(size_t max_block_size,
- sqfs_compressor_t *cmp,
- unsigned int num_workers,
- size_t max_backlog,
- size_t devblksz,
- sqfs_file_t *file)
-{
- sqfs_data_writer_t *proc;
- sigset_t set, oldset;
- unsigned int i;
- int ret;
-
- if (num_workers < 1)
- num_workers = 1;
-
- proc = alloc_flex(sizeof(*proc),
- sizeof(proc->workers[0]), num_workers);
- if (proc == NULL)
- return NULL;
-
- proc->mtx = (pthread_mutex_t)PTHREAD_MUTEX_INITIALIZER;
- proc->queue_cond = (pthread_cond_t)PTHREAD_COND_INITIALIZER;
- proc->done_cond = (pthread_cond_t)PTHREAD_COND_INITIALIZER;
-
- if (data_writer_init(proc, max_block_size, cmp, num_workers,
- max_backlog, devblksz, file)) {
- goto fail_init;
- }
-
- for (i = 0; i < num_workers; ++i) {
- proc->workers[i] = alloc_flex(sizeof(compress_worker_t),
- 1, max_block_size);
-
- if (proc->workers[i] == NULL)
- goto fail_init;
-
- proc->workers[i]->shared = proc;
- proc->workers[i]->cmp = cmp->create_copy(cmp);
-
- if (proc->workers[i]->cmp == NULL)
- goto fail_init;
- }
-
- sigfillset(&set);
- pthread_sigmask(SIG_SETMASK, &set, &oldset);
-
- for (i = 0; i < num_workers; ++i) {
- ret = pthread_create(&proc->workers[i]->thread, NULL,
- worker_proc, proc->workers[i]);
-
- if (ret != 0)
- goto fail_thread;
- }
-
- pthread_sigmask(SIG_SETMASK, &oldset, NULL);
-
- return 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);
- }
- }
- 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) {
- proc->workers[i]->cmp->
- 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);
- data_writer_cleanup(proc);
- return NULL;
-}
-
-void sqfs_data_writer_destroy(sqfs_data_writer_t *proc)
-{
- 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);
-
- proc->workers[i]->cmp->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);
-
- data_writer_cleanup(proc);
-}
-#endif
-
-int append_to_work_queue(sqfs_data_writer_t *proc, sqfs_block_t *block,
- bool signal_threads)
-{
- int status;
-
- LOCK(&proc->mtx);
- status = proc->status;
- if (status != 0)
- goto out;
-
- if (block != NULL) {
- if (proc->queue_last == NULL) {
- proc->queue = proc->queue_last = block;
- } else {
- proc->queue_last->next = block;
- proc->queue_last = block;
- }
-
- block->sequence_number = proc->enqueue_id++;
- block->next = NULL;
- proc->backlog += 1;
- block = NULL;
- }
-out:
- if (signal_threads)
- SIGNAL_ALL(&proc->queue_cond);
-
- UNLOCK(&proc->mtx);
- free(block);
- return 0;
-}
-
-static sqfs_block_t *try_dequeue(sqfs_data_writer_t *proc)
-{
- sqfs_block_t *queue, *it, *prev;
-
- it = proc->done;
- prev = NULL;
-
- while (it != NULL && it->sequence_number == proc->dequeue_id) {
- prev = it;
- it = it->next;
- proc->dequeue_id += 1;
- }
-
- if (prev == NULL) {
- queue = NULL;
- } else {
- queue = proc->done;
- prev->next = NULL;
- proc->done = it;
- }
-
- return queue;
-}
-
-static sqfs_block_t *queue_merge(sqfs_block_t *lhs, sqfs_block_t *rhs)
-{
- sqfs_block_t *it, *head = NULL, **next_ptr = &head;
-
- while (lhs != NULL && rhs != NULL) {
- if (lhs->sequence_number <= rhs->sequence_number) {
- it = lhs;
- lhs = lhs->next;
- } else {
- it = rhs;
- rhs = rhs->next;
- }
-
- *next_ptr = it;
- next_ptr = &it->next;
- }
-
- it = (lhs != NULL ? lhs : rhs);
- *next_ptr = it;
- return head;
-}
-
-static int process_done_queue(sqfs_data_writer_t *proc, sqfs_block_t *queue)
-{
- sqfs_block_t *it, *block = NULL;
- int status = 0;
-
- while (queue != NULL && status == 0) {
- it = queue;
- queue = it->next;
- proc->backlog -= 1;
-
- if (it->flags & SQFS_BLK_IS_FRAGMENT) {
- block = NULL;
- status = process_completed_fragment(proc, it, &block);
-
- if (block != NULL && status == 0) {
- LOCK(&proc->mtx);
- proc->dequeue_id = it->sequence_number;
- block->sequence_number = it->sequence_number;
-
- if (proc->queue == NULL) {
- proc->queue = block;
- proc->queue_last = block;
- } else {
- block->next = proc->queue;
- proc->queue = block;
- }
-
- proc->backlog += 1;
- proc->done = queue_merge(queue, proc->done);
- SIGNAL_ALL(&proc->queue_cond);
- UNLOCK(&proc->mtx);
-
- queue = NULL;
- } else {
- free(block);
- }
- } else {
- status = process_completed_block(proc, it);
- }
-
- free(it);
- }
-
- free_blk_list(queue);
- return status;
-}
-
-int test_and_set_status(sqfs_data_writer_t *proc, int status)
-{
- LOCK(&proc->mtx);
- if (proc->status == 0) {
- proc->status = status;
- } else {
- status = proc->status;
- }
- SIGNAL_ALL(&proc->queue_cond);
- UNLOCK(&proc->mtx);
- return status;
-}
-
-int wait_completed(sqfs_data_writer_t *proc)
-{
- sqfs_block_t *queue;
- int status;
-
- LOCK(&proc->mtx);
- for (;;) {
- queue = try_dequeue(proc);
- status = proc->status;
-
- if (queue != NULL || status != 0)
- break;
-
- AWAIT(&proc->done_cond, &proc->mtx);
- }
- UNLOCK(&proc->mtx);
-
- if (status != 0) {
- free_blk_list(queue);
- return status;
- }
-
- status = process_done_queue(proc, queue);
- return status ? test_and_set_status(proc, status) : status;
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-03 03:55:38 +0000