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authorDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-09-25 07:28:04 +0200
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-09-25 07:29:11 +0200
commitedac31f28863ae9f1b310d971fb194959c42c916 (patch)
treed9d81491e442123d776c6265795db47247ee6346 /lib/sqfs/data_writer/internal.h
parent9434bdfaedb733e1441d87fedde8056efeda7145 (diff)
Rename block processor to sqfs_data_writer_t
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'lib/sqfs/data_writer/internal.h')
-rw-r--r--lib/sqfs/data_writer/internal.h137
1 files changed, 137 insertions, 0 deletions
diff --git a/lib/sqfs/data_writer/internal.h b/lib/sqfs/data_writer/internal.h
new file mode 100644
index 0000000..10cc82c
--- /dev/null
+++ b/lib/sqfs/data_writer/internal.h
@@ -0,0 +1,137 @@
+/* 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/data_writer.h"
+#include "sqfs/compress.h"
+#include "sqfs/inode.h"
+#include "sqfs/table.h"
+#include "sqfs/error.h"
+#include "sqfs/data.h"
+#include "sqfs/io.h"
+#include "util.h"
+
+#include <string.h>
+#include <stdlib.h>
+#include <zlib.h>
+
+#ifdef WITH_PTHREAD
+#include <pthread.h>
+#endif
+
+
+#define MK_BLK_HASH(chksum, size) \
+ (((uint64_t)(size) << 32) | (uint64_t)(chksum))
+
+#define INIT_BLOCK_COUNT (128)
+
+
+typedef struct {
+ uint64_t offset;
+ uint64_t hash;
+} blk_info_t;
+
+typedef struct {
+ uint32_t index;
+ uint32_t offset;
+ uint64_t hash;
+} frag_info_t;
+
+
+#ifdef WITH_PTHREAD
+typedef struct {
+ sqfs_data_writer_t *shared;
+ sqfs_compressor_t *cmp;
+ pthread_t thread;
+ uint8_t scratch[];
+} compress_worker_t;
+#endif
+
+struct sqfs_data_writer_t {
+ /* synchronization primitives */
+#ifdef WITH_PTHREAD
+ pthread_mutex_t mtx;
+ pthread_cond_t queue_cond;
+ pthread_cond_t 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 */
+ uint32_t enqueue_id;
+ uint32_t dequeue_id;
+
+ unsigned int num_workers;
+ size_t max_backlog;
+
+ size_t devblksz;
+ sqfs_file_t *file;
+
+ sqfs_fragment_t *fragments;
+ size_t num_fragments;
+ size_t max_fragments;
+
+ uint64_t 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;
+ frag_info_t *frag_list;
+ size_t frag_list_num;
+ size_t frag_list_max;
+
+ /* used only by workers */
+ size_t max_block_size;
+
+#ifdef WITH_PTHREAD
+ compress_worker_t *workers[];
+#else
+ uint8_t scratch[];
+#endif
+};
+
+SQFS_INTERNAL int process_completed_block(sqfs_data_writer_t *proc,
+ sqfs_block_t *block);
+
+SQFS_INTERNAL
+int process_completed_fragment(sqfs_data_writer_t *proc, sqfs_block_t *frag,
+ sqfs_block_t **blk_out);
+
+SQFS_INTERNAL void free_blk_list(sqfs_block_t *list);
+
+SQFS_INTERNAL
+int data_writer_init(sqfs_data_writer_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 data_writer_cleanup(sqfs_data_writer_t *proc);
+
+SQFS_INTERNAL
+void data_writer_store_done(sqfs_data_writer_t *proc, sqfs_block_t *blk,
+ int status);
+
+SQFS_INTERNAL
+sqfs_block_t *data_writer_next_work_item(sqfs_data_writer_t *proc);
+
+SQFS_INTERNAL
+int data_writer_do_block(sqfs_block_t *block, sqfs_compressor_t *cmp,
+ uint8_t *scratch, size_t scratch_size);
+
+#endif /* INTERNAL_H */