From 7ca19d23cb4913b5dabfdf3469852ec9f2c0f8d7 Mon Sep 17 00:00:00 2001 From: David Oberhollenzer Date: Tue, 13 Aug 2019 14:11:25 +0200 Subject: Add block processor data structure The interface is designed for parallel, asynchronuous processing of data blocks with an I/O callback that handles the serialized result. The underlying implementation is currently still synchronuous. Signed-off-by: David Oberhollenzer --- lib/comp/block_processor.c | 72 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 lib/comp/block_processor.c (limited to 'lib/comp/block_processor.c') diff --git a/lib/comp/block_processor.c b/lib/comp/block_processor.c new file mode 100644 index 0000000..5938b3a --- /dev/null +++ b/lib/comp/block_processor.c @@ -0,0 +1,72 @@ +/* SPDX-License-Identifier: GPL-3.0-or-later */ +/* + * block_processor.c + * + * Copyright (C) 2019 David Oberhollenzer + */ +#include "config.h" + +#include "block_processor.h" +#include "util.h" + +#include +#include +#include + +struct block_processor_t { + size_t max_block_size; + compressor_t *cmp; + block_cb cb; + void *user; + int status; + + uint8_t scratch[]; +}; + +block_processor_t *block_processor_create(size_t max_block_size, + compressor_t *cmp, + unsigned int num_workers, + void *user, + block_cb callback) +{ + block_processor_t *proc = calloc(1, sizeof(*proc) + max_block_size); + (void)num_workers; + + if (proc == NULL) { + perror("Creating block processor"); + return NULL; + } + + proc->max_block_size = max_block_size; + proc->cmp = cmp; + proc->cb = callback; + proc->user = user; + return proc; +} + +void block_processor_destroy(block_processor_t *proc) +{ + free(proc); +} + +int block_processor_enqueue(block_processor_t *proc, block_t *block) +{ + if (process_block(block, proc->cmp, + proc->scratch, proc->max_block_size)) + goto fail; + + if (proc->cb(proc->user, block)) + goto fail; + + free(block); + return 0; +fail: + free(block); + proc->status = -1; + return -1; +} + +int block_processor_finish(block_processor_t *proc) +{ + return proc->status; +} -- cgit v1.2.3