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-rw-r--r--lib/sqfs/block_processor/block.c203
-rw-r--r--lib/sqfs/block_processor/common.c72
-rw-r--r--lib/sqfs/block_processor/fileapi.c188
-rw-r--r--lib/sqfs/block_processor/fragment.c81
-rw-r--r--lib/sqfs/block_processor/internal.h141
-rw-r--r--lib/sqfs/block_processor/serial.c88
-rw-r--r--lib/sqfs/block_processor/winpthread.c450
7 files changed, 1223 insertions, 0 deletions
diff --git a/lib/sqfs/block_processor/block.c b/lib/sqfs/block_processor/block.c
new file mode 100644
index 0000000..49892be
--- /dev/null
+++ b/lib/sqfs/block_processor/block.c
@@ -0,0 +1,203 @@
+/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/*
+ * process_block.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#define SQFS_BUILDING_DLL
+#include "internal.h"
+
+#include <string.h>
+
+static int store_block_location(sqfs_block_processor_t *proc, sqfs_u64 offset,
+ sqfs_u32 size, sqfs_u32 chksum)
+{
+ size_t new_sz;
+ void *new;
+
+ if (proc->num_blocks == proc->max_blocks) {
+ new_sz = proc->max_blocks * 2;
+ new = realloc(proc->blocks, sizeof(proc->blocks[0]) * new_sz);
+
+ if (new == NULL)
+ return SQFS_ERROR_ALLOC;
+
+ proc->blocks = new;
+ proc->max_blocks = new_sz;
+ }
+
+ proc->blocks[proc->num_blocks].offset = offset;
+ proc->blocks[proc->num_blocks].hash = MK_BLK_HASH(chksum, size);
+ proc->num_blocks += 1;
+ return 0;
+}
+
+static size_t deduplicate_blocks(sqfs_block_processor_t *proc, size_t count)
+{
+ size_t i, j;
+
+ for (i = 0; i < proc->file_start; ++i) {
+ for (j = 0; j < count; ++j) {
+ if (proc->blocks[i + j].hash !=
+ proc->blocks[proc->file_start + j].hash)
+ break;
+ }
+
+ if (j == count)
+ break;
+ }
+
+ return i;
+}
+
+static int align_file(sqfs_block_processor_t *proc, sqfs_block_t *blk)
+{
+ sqfs_u32 chksum;
+ void *padding;
+ sqfs_u64 size;
+ size_t diff;
+ int ret;
+
+ if (!(blk->flags & SQFS_BLK_ALIGN))
+ return 0;
+
+ size = proc->file->get_size(proc->file);
+ diff = size % proc->devblksz;
+ if (diff == 0)
+ return 0;
+
+ padding = calloc(1, diff);
+ if (padding == 0)
+ return SQFS_ERROR_ALLOC;
+
+ if (proc->hooks != NULL && proc->hooks->prepare_padding != NULL)
+ proc->hooks->prepare_padding(proc->user_ptr, padding, diff);
+
+ chksum = crc32(0, padding, diff);
+
+ ret = proc->file->write_at(proc->file, size, padding, diff);
+ free(padding);
+ if (ret)
+ return ret;
+
+ return store_block_location(proc, size, diff | (1 << 24), chksum);
+}
+
+int process_completed_block(sqfs_block_processor_t *proc, sqfs_block_t *blk)
+{
+ sqfs_u64 offset, bytes;
+ size_t start, count;
+ sqfs_u32 out;
+ int err;
+
+ if (proc->hooks != NULL && proc->hooks->pre_block_write != NULL) {
+ proc->hooks->pre_block_write(proc->user_ptr, blk, proc->file);
+ }
+
+ if (blk->flags & SQFS_BLK_FIRST_BLOCK) {
+ proc->start = proc->file->get_size(proc->file);
+ proc->file_start = proc->num_blocks;
+
+ err = align_file(proc, blk);
+ if (err)
+ return err;
+ }
+
+ if (blk->size != 0) {
+ out = blk->size;
+ if (!(blk->flags & SQFS_BLK_IS_COMPRESSED))
+ out |= 1 << 24;
+
+ offset = proc->file->get_size(proc->file);
+
+ if (blk->flags & SQFS_BLK_FRAGMENT_BLOCK) {
+ err = sqfs_frag_table_set(proc->frag_tbl, blk->index,
+ offset, out);
+ if (err)
+ return err;
+ } else {
+ blk->inode->extra[blk->index] = out;
+ }
+
+ err = store_block_location(proc, offset, out, blk->checksum);
+ if (err)
+ return err;
+
+ err = proc->file->write_at(proc->file, offset,
+ blk->data, blk->size);
+ if (err)
+ return err;
+ }
+
+ if (proc->hooks != NULL && proc->hooks->post_block_write != NULL) {
+ proc->hooks->post_block_write(proc->user_ptr, blk, proc->file);
+ }
+
+ if (blk->flags & SQFS_BLK_LAST_BLOCK) {
+ err = align_file(proc, blk);
+ if (err)
+ return err;
+
+ count = proc->num_blocks - proc->file_start;
+ start = deduplicate_blocks(proc, count);
+ offset = proc->blocks[start].offset;
+
+ sqfs_inode_set_file_block_start(blk->inode, offset);
+
+ if (start >= proc->file_start)
+ return 0;
+
+ offset = start + count;
+ if (offset >= proc->file_start) {
+ count = proc->num_blocks - offset;
+ proc->num_blocks = offset;
+ } else {
+ proc->num_blocks = proc->file_start;
+ }
+
+ if (proc->hooks != NULL &&
+ proc->hooks->notify_blocks_erased != NULL) {
+ bytes = proc->file->get_size(proc->file) - proc->start;
+
+ proc->hooks->notify_blocks_erased(proc->user_ptr,
+ count, bytes);
+ }
+
+ err = proc->file->truncate(proc->file, proc->start);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+int block_processor_do_block(sqfs_block_t *block, sqfs_compressor_t *cmp,
+ sqfs_u8 *scratch, size_t scratch_size)
+{
+ ssize_t ret;
+
+ if (block->size == 0) {
+ block->checksum = 0;
+ return 0;
+ }
+
+ block->checksum = crc32(0, block->data, block->size);
+
+ if (block->flags & SQFS_BLK_IS_FRAGMENT)
+ return 0;
+
+ if (!(block->flags & SQFS_BLK_DONT_COMPRESS)) {
+ ret = cmp->do_block(cmp, block->data, block->size,
+ scratch, scratch_size);
+ if (ret < 0)
+ return ret;
+
+ if (ret > 0) {
+ memcpy(block->data, scratch, ret);
+ block->size = ret;
+ block->flags |= SQFS_BLK_IS_COMPRESSED;
+ }
+ }
+
+ return 0;
+}
diff --git a/lib/sqfs/block_processor/common.c b/lib/sqfs/block_processor/common.c
new file mode 100644
index 0000000..c6375dd
--- /dev/null
+++ b/lib/sqfs/block_processor/common.c
@@ -0,0 +1,72 @@
+/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/*
+ * common.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#define SQFS_BUILDING_DLL
+#include "internal.h"
+
+void free_blk_list(sqfs_block_t *list)
+{
+ sqfs_block_t *it;
+
+ while (list != NULL) {
+ it = list;
+ list = list->next;
+ free(it);
+ }
+}
+
+int block_processor_init(sqfs_block_processor_t *proc, size_t max_block_size,
+ sqfs_compressor_t *cmp, unsigned int num_workers,
+ size_t max_backlog, size_t devblksz, sqfs_file_t *file)
+{
+ proc->max_block_size = max_block_size;
+ proc->num_workers = num_workers;
+ proc->max_backlog = max_backlog;
+ proc->devblksz = devblksz;
+ proc->cmp = cmp;
+ proc->file = file;
+ proc->max_blocks = INIT_BLOCK_COUNT;
+
+ proc->frag_tbl = sqfs_frag_table_create(0);
+ if (proc->frag_tbl == NULL)
+ return -1;
+
+ proc->blocks = alloc_array(sizeof(proc->blocks[0]), proc->max_blocks);
+ if (proc->blocks == NULL)
+ return -1;
+
+ return 0;
+}
+
+void block_processor_cleanup(sqfs_block_processor_t *proc)
+{
+ if (proc->frag_tbl != NULL)
+ sqfs_frag_table_destroy(proc->frag_tbl);
+ free_blk_list(proc->queue);
+ free_blk_list(proc->done);
+ free(proc->blk_current);
+ free(proc->frag_block);
+ free(proc->blocks);
+ free(proc);
+}
+
+int sqfs_block_processor_write_fragment_table(sqfs_block_processor_t *proc,
+ sqfs_super_t *super)
+{
+ return sqfs_frag_table_write(proc->frag_tbl, proc->file,
+ super, proc->cmp);
+}
+
+int sqfs_block_processor_set_hooks(sqfs_block_processor_t *proc, void *user_ptr,
+ const sqfs_block_hooks_t *hooks)
+{
+ if (hooks->size != sizeof(*hooks))
+ return SQFS_ERROR_UNSUPPORTED;
+
+ proc->hooks = hooks;
+ proc->user_ptr = user_ptr;
+ return 0;
+}
diff --git a/lib/sqfs/block_processor/fileapi.c b/lib/sqfs/block_processor/fileapi.c
new file mode 100644
index 0000000..9e59c1d
--- /dev/null
+++ b/lib/sqfs/block_processor/fileapi.c
@@ -0,0 +1,188 @@
+/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/*
+ * fileapi.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#define SQFS_BUILDING_DLL
+#include "internal.h"
+
+static bool is_zero_block(unsigned char *ptr, size_t size)
+{
+ return ptr[0] == 0 && memcmp(ptr, ptr + 1, size - 1) == 0;
+}
+
+static int enqueue_block(sqfs_block_processor_t *proc, sqfs_block_t *block)
+{
+ int status;
+
+ while (proc->backlog > proc->max_backlog) {
+ status = wait_completed(proc);
+ if (status)
+ return status;
+ }
+
+ if (proc->backlog == proc->max_backlog)
+ proc->notify_threads = true;
+
+ return append_to_work_queue(proc, block, proc->notify_threads);
+}
+
+static int add_sentinel_block(sqfs_block_processor_t *proc)
+{
+ sqfs_block_t *blk = calloc(1, sizeof(*blk));
+
+ if (blk == NULL)
+ return test_and_set_status(proc, SQFS_ERROR_ALLOC);
+
+ blk->inode = proc->inode;
+ blk->flags = proc->blk_flags | SQFS_BLK_LAST_BLOCK;
+
+ return enqueue_block(proc, blk);
+}
+
+int sqfs_block_processor_begin_file(sqfs_block_processor_t *proc,
+ sqfs_inode_generic_t *inode, sqfs_u32 flags)
+{
+ if (proc->inode != NULL)
+ return test_and_set_status(proc, SQFS_ERROR_INTERNAL);
+
+ if (flags & ~SQFS_BLK_USER_SETTABLE_FLAGS)
+ return test_and_set_status(proc, SQFS_ERROR_UNSUPPORTED);
+
+ proc->inode = inode;
+ proc->blk_flags = flags | SQFS_BLK_FIRST_BLOCK;
+ proc->blk_index = 0;
+ proc->blk_current = NULL;
+ return 0;
+}
+
+static int flush_block(sqfs_block_processor_t *proc, sqfs_block_t *block)
+{
+ block->index = proc->blk_index++;
+ block->flags = proc->blk_flags;
+ block->inode = proc->inode;
+
+ if (is_zero_block(block->data, block->size)) {
+ sqfs_inode_make_extended(proc->inode);
+ proc->inode->data.file_ext.sparse += block->size;
+ proc->inode->num_file_blocks += 1;
+ proc->inode->extra[block->index] = 0;
+ free(block);
+ return 0;
+ }
+
+ if (block->size < proc->max_block_size &&
+ !(block->flags & SQFS_BLK_DONT_FRAGMENT)) {
+ block->flags |= SQFS_BLK_IS_FRAGMENT;
+ } else {
+ proc->inode->num_file_blocks += 1;
+ proc->blk_flags &= ~SQFS_BLK_FIRST_BLOCK;
+ }
+
+ return enqueue_block(proc, block);
+}
+
+int sqfs_block_processor_append(sqfs_block_processor_t *proc, const void *data,
+ size_t size)
+{
+ size_t diff;
+ void *new;
+ int err;
+
+ while (size > 0) {
+ if (proc->blk_current == NULL) {
+ new = alloc_flex(sizeof(*proc->blk_current), 1,
+ proc->max_block_size);
+
+ if (new == NULL)
+ return test_and_set_status(proc,
+ SQFS_ERROR_ALLOC);
+
+ proc->blk_current = new;
+ }
+
+ diff = proc->max_block_size - proc->blk_current->size;
+
+ if (diff == 0) {
+ err = flush_block(proc, proc->blk_current);
+ proc->blk_current = NULL;
+ if (err)
+ return err;
+ continue;
+ }
+
+ if (diff > size)
+ diff = size;
+
+ memcpy(proc->blk_current->data + proc->blk_current->size,
+ data, diff);
+
+ size -= diff;
+ proc->blk_current->size += diff;
+ data = (const char *)data + diff;
+ }
+
+ if (proc->blk_current != NULL &&
+ proc->blk_current->size == proc->max_block_size) {
+ err = flush_block(proc, proc->blk_current);
+ proc->blk_current = NULL;
+ return err;
+ }
+
+ return 0;
+}
+
+int sqfs_block_processor_end_file(sqfs_block_processor_t *proc)
+{
+ int err;
+
+ if (proc->inode == NULL)
+ return test_and_set_status(proc, SQFS_ERROR_INTERNAL);
+
+ if (!(proc->blk_flags & SQFS_BLK_FIRST_BLOCK)) {
+ if (proc->blk_current != NULL &&
+ (proc->blk_flags & SQFS_BLK_DONT_FRAGMENT)) {
+ proc->blk_flags |= SQFS_BLK_LAST_BLOCK;
+ } else {
+ err = add_sentinel_block(proc);
+ if (err)
+ return err;
+ }
+ }
+
+ if (proc->blk_current != NULL) {
+ err = flush_block(proc, proc->blk_current);
+ proc->blk_current = NULL;
+ }
+
+ proc->inode = NULL;
+ proc->blk_flags = 0;
+ proc->blk_index = 0;
+ return 0;
+}
+
+int sqfs_block_processor_finish(sqfs_block_processor_t *proc)
+{
+ int status = 0;
+
+ append_to_work_queue(proc, NULL, true);
+
+ while (proc->backlog > 0) {
+ status = wait_completed(proc);
+ if (status)
+ return status;
+ }
+
+ if (proc->frag_block != NULL) {
+ status = append_to_work_queue(proc, proc->frag_block, true);
+ proc->frag_block = NULL;
+
+ if (status)
+ return status;
+
+ status = wait_completed(proc);
+ }
+
+ return status;
+}
diff --git a/lib/sqfs/block_processor/fragment.c b/lib/sqfs/block_processor/fragment.c
new file mode 100644
index 0000000..3701b3c
--- /dev/null
+++ b/lib/sqfs/block_processor/fragment.c
@@ -0,0 +1,81 @@
+/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/*
+ * fragtbl.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#define SQFS_BUILDING_DLL
+#include "internal.h"
+
+int process_completed_fragment(sqfs_block_processor_t *proc, sqfs_block_t *frag,
+ sqfs_block_t **blk_out)
+{
+ sqfs_u32 index, offset;
+ size_t size;
+ int err;
+
+ err = sqfs_frag_table_find_tail_end(proc->frag_tbl,
+ frag->checksum, frag->size,
+ &index, &offset);
+ if (err == 0)
+ goto out_duplicate;
+
+ if (proc->frag_block != NULL) {
+ size = proc->frag_block->size + frag->size;
+
+ if (size > proc->max_block_size) {
+ *blk_out = proc->frag_block;
+ proc->frag_block = NULL;
+ }
+ }
+
+ if (proc->frag_block == NULL) {
+ size = sizeof(sqfs_block_t) + proc->max_block_size;
+
+ err= sqfs_frag_table_append(proc->frag_tbl, 0, 0, &index);
+ if (err)
+ goto fail;
+
+ proc->frag_block = calloc(1, size);
+ if (proc->frag_block == NULL) {
+ err = SQFS_ERROR_ALLOC;
+ goto fail;
+ }
+
+ proc->frag_block->index = index;
+ proc->frag_block->flags = SQFS_BLK_FRAGMENT_BLOCK;
+ }
+
+ err = sqfs_frag_table_add_tail_end(proc->frag_tbl,
+ proc->frag_block->index,
+ proc->frag_block->size,
+ frag->size, frag->checksum);
+ if (err)
+ goto fail;
+
+ sqfs_inode_set_frag_location(frag->inode, proc->frag_block->index,
+ proc->frag_block->size);
+
+ if (proc->hooks != NULL && proc->hooks->pre_fragment_store != NULL) {
+ proc->hooks->pre_fragment_store(proc->user_ptr, frag);
+ }
+
+ memcpy(proc->frag_block->data + proc->frag_block->size,
+ frag->data, frag->size);
+
+ proc->frag_block->flags |= (frag->flags & SQFS_BLK_DONT_COMPRESS);
+ proc->frag_block->size += frag->size;
+ return 0;
+fail:
+ free(*blk_out);
+ *blk_out = NULL;
+ return err;
+out_duplicate:
+ sqfs_inode_set_frag_location(frag->inode, index, offset);
+
+ if (proc->hooks != NULL &&
+ proc->hooks->notify_fragment_discard != NULL) {
+ proc->hooks->notify_fragment_discard(proc->user_ptr, frag);
+ }
+ return 0;
+}
diff --git a/lib/sqfs/block_processor/internal.h b/lib/sqfs/block_processor/internal.h
new file mode 100644
index 0000000..40871b9
--- /dev/null
+++ b/lib/sqfs/block_processor/internal.h
@@ -0,0 +1,141 @@
+/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/*
+ * internal.h
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#ifndef INTERNAL_H
+#define INTERNAL_H
+
+#include "config.h"
+
+#include "sqfs/block_processor.h"
+#include "sqfs/frag_table.h"
+#include "sqfs/compressor.h"
+#include "sqfs/inode.h"
+#include "sqfs/table.h"
+#include "sqfs/error.h"
+#include "sqfs/block.h"
+#include "sqfs/io.h"
+#include "../util.h"
+
+#include <string.h>
+#include <stdlib.h>
+#include <zlib.h>
+
+#ifdef WITH_PTHREAD
+#include <pthread.h>
+#include <signal.h>
+#elif defined(_WIN32) || defined(__WINDOWS__)
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#endif
+
+
+#define MK_BLK_HASH(chksum, size) \
+ (((sqfs_u64)(size) << 32) | (sqfs_u64)(chksum))
+
+#define INIT_BLOCK_COUNT (128)
+
+
+typedef struct {
+ sqfs_u64 offset;
+ sqfs_u64 hash;
+} blk_info_t;
+
+
+typedef struct compress_worker_t compress_worker_t;
+
+struct sqfs_block_processor_t {
+ /* synchronization primitives */
+#ifdef WITH_PTHREAD
+ pthread_mutex_t mtx;
+ pthread_cond_t queue_cond;
+ pthread_cond_t done_cond;
+#elif defined(_WIN32) || defined(__WINDOWS__)
+ CRITICAL_SECTION mtx;
+ CONDITION_VARIABLE queue_cond;
+ CONDITION_VARIABLE done_cond;
+#endif
+
+ /* needs rw access by worker and main thread */
+ sqfs_block_t *queue;
+ sqfs_block_t *queue_last;
+
+ sqfs_block_t *done;
+ size_t backlog;
+ int status;
+
+ /* used by main thread only */
+ sqfs_u32 enqueue_id;
+ sqfs_u32 dequeue_id;
+
+ unsigned int num_workers;
+ size_t max_backlog;
+
+ size_t devblksz;
+ sqfs_file_t *file;
+
+ sqfs_frag_table_t *frag_tbl;
+
+ sqfs_u64 start;
+
+ size_t file_start;
+ size_t num_blocks;
+ size_t max_blocks;
+ blk_info_t *blocks;
+ sqfs_compressor_t *cmp;
+
+ sqfs_block_t *frag_block;
+
+ const sqfs_block_hooks_t *hooks;
+ void *user_ptr;
+ bool notify_threads;
+
+ /* file API */
+ sqfs_inode_generic_t *inode;
+ sqfs_block_t *blk_current;
+ sqfs_u32 blk_flags;
+ size_t blk_index;
+
+ /* used only by workers */
+ size_t max_block_size;
+
+#if defined(WITH_PTHREAD) || defined(_WIN32) || defined(__WINDOWS__)
+ compress_worker_t *workers[];
+#else
+ sqfs_u8 scratch[];
+#endif
+};
+
+SQFS_INTERNAL int process_completed_block(sqfs_block_processor_t *proc,
+ sqfs_block_t *block);
+
+SQFS_INTERNAL
+int process_completed_fragment(sqfs_block_processor_t *proc, sqfs_block_t *frag,
+ sqfs_block_t **blk_out);
+
+SQFS_INTERNAL void free_blk_list(sqfs_block_t *list);
+
+SQFS_INTERNAL
+int block_processor_init(sqfs_block_processor_t *proc, 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_INTERNAL void block_processor_cleanup(sqfs_block_processor_t *proc);
+
+SQFS_INTERNAL
+int block_processor_do_block(sqfs_block_t *block, sqfs_compressor_t *cmp,
+ sqfs_u8 *scratch, size_t scratch_size);
+
+SQFS_INTERNAL
+int test_and_set_status(sqfs_block_processor_t *proc, int status);
+
+SQFS_INTERNAL
+int append_to_work_queue(sqfs_block_processor_t *proc, sqfs_block_t *block,
+ bool notify_threads);
+
+SQFS_INTERNAL int wait_completed(sqfs_block_processor_t *proc);
+
+#endif /* INTERNAL_H */
diff --git a/lib/sqfs/block_processor/serial.c b/lib/sqfs/block_processor/serial.c
new file mode 100644
index 0000000..eedb19c
--- /dev/null
+++ b/lib/sqfs/block_processor/serial.c
@@ -0,0 +1,88 @@
+/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/*
+ * serial.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#define SQFS_BUILDING_DLL
+#include "internal.h"
+
+sqfs_block_processor_t *sqfs_block_processor_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_block_processor_t *proc;
+
+ proc = alloc_flex(sizeof(*proc), 1, max_block_size);
+
+ if (proc == NULL)
+ return NULL;
+
+ if (block_processor_init(proc, max_block_size, cmp, num_workers,
+ max_backlog, devblksz, file)) {
+ block_processor_cleanup(proc);
+ return NULL;
+ }
+
+ return proc;
+}
+
+void sqfs_block_processor_destroy(sqfs_block_processor_t *proc)
+{
+ block_processor_cleanup(proc);
+}
+
+int test_and_set_status(sqfs_block_processor_t *proc, int status)
+{
+ if (proc->status == 0)
+ proc->status = status;
+
+ return proc->status;
+}
+
+int append_to_work_queue(sqfs_block_processor_t *proc, sqfs_block_t *block,
+ bool signal_threads)
+{
+ sqfs_block_t *fragblk = NULL;
+ (void)signal_threads;
+
+ if (proc->status != 0 || block == NULL) {
+ free(block);
+ return proc->status;
+ }
+
+ if (block->flags & SQFS_BLK_IS_FRAGMENT) {
+ block->checksum = crc32(0, block->data, block->size);
+
+ proc->status = process_completed_fragment(proc, block,
+ &fragblk);
+ free(block);
+
+ if (proc->status != 0) {
+ free(fragblk);
+ return proc->status;
+ }
+
+ if (fragblk == NULL)
+ return 0;
+
+ block = fragblk;
+ }
+
+ proc->status = block_processor_do_block(block, proc->cmp, proc->scratch,
+ proc->max_block_size);
+
+ if (proc->status == 0)
+ proc->status = process_completed_block(proc, block);
+
+ free(block);
+ return proc->status;
+}
+
+int wait_completed(sqfs_block_processor_t *proc)
+{
+ return proc->status;
+}
diff --git a/lib/sqfs/block_processor/winpthread.c b/lib/sqfs/block_processor/winpthread.c
new file mode 100644
index 0000000..b16a17c
--- /dev/null
+++ b/lib/sqfs/block_processor/winpthread.c
@@ -0,0 +1,450 @@
+/* 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_block_processor_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_block_processor_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 = block_processor_do_block(blk, worker->cmp,
+ worker->scratch,
+ shared->max_block_size);
+ }
+
+ return THREAD_EXIT_SUCCESS;
+}
+
+#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,
+ size_t max_backlog,
+ size_t devblksz,
+ sqfs_file_t *file)
+{
+ sqfs_block_processor_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 (block_processor_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_block_processor_destroy(proc);
+ return NULL;
+}
+
+void sqfs_block_processor_destroy(sqfs_block_processor_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);
+ block_processor_cleanup(proc);
+}
+#else
+sqfs_block_processor_t *sqfs_block_processor_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_block_processor_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 (block_processor_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);
+ block_processor_cleanup(proc);
+ return NULL;
+}
+
+void sqfs_block_processor_destroy(sqfs_block_processor_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);
+
+ block_processor_cleanup(proc);
+}
+#endif
+
+int append_to_work_queue(sqfs_block_processor_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_block_processor_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_block_processor_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_block_processor_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_block_processor_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 2024-11-05 21:40:56 +0000