mirror of
https://github.com/facebook/zstd.git
synced 2025-11-04 00:02:59 -05:00
129 lines
4.0 KiB
C
129 lines
4.0 KiB
C
/*
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* Copyright (c) 2017-2021, Yann Collet, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under both the BSD-style license (found in the
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* LICENSE file in the root directory of this source tree) and the GPLv2 (found
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* in the COPYING file in the root directory of this source tree).
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* You may select, at your option, one of the above-listed licenses.
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*/
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#include <assert.h>
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#include <stdio.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include "datagen.h"
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#include "mem.h"
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#define ZSTD_STATIC_LINKING_ONLY
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#include "zstd.h"
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static int
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compress(ZSTD_CCtx* cctx, ZSTD_DCtx* dctx,
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void* dst, size_t dstCapacity,
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void const* src, size_t srcSize,
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void* roundtrip, ZSTD_EndDirective end)
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{
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ZSTD_inBuffer in = {src, srcSize, 0};
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ZSTD_outBuffer out = {dst, dstCapacity, 0};
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int ended = 0;
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while (!ended && (in.pos < in.size || out.pos > 0)) {
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size_t rc;
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out.pos = 0;
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rc = ZSTD_compressStream2(cctx, &out, &in, end);
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if (ZSTD_isError(rc))
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return 1;
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if (end == ZSTD_e_end && rc == 0)
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ended = 1;
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{
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ZSTD_inBuffer rtIn = {dst, out.pos, 0};
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ZSTD_outBuffer rtOut = {roundtrip, srcSize, 0};
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rc = 1;
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while (rtIn.pos < rtIn.size || rtOut.pos > 0) {
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rtOut.pos = 0;
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rc = ZSTD_decompressStream(dctx, &rtOut, &rtIn);
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if (ZSTD_isError(rc)) {
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fprintf(stderr, "Decompression error: %s\n", ZSTD_getErrorName(rc));
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return 1;
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}
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if (rc == 0)
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break;
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}
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if (ended && rc != 0) {
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fprintf(stderr, "Frame not finished!\n");
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return 1;
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}
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}
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}
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return 0;
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}
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int main(int argc, const char** argv)
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{
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ZSTD_CCtx* cctx = ZSTD_createCCtx();
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ZSTD_DCtx* dctx = ZSTD_createDCtx();
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const size_t dataSize = (size_t)1 << 30;
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const size_t outSize = ZSTD_compressBound(dataSize);
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const size_t bufferSize = (size_t)1 << 31;
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char* buffer = (char*)malloc(bufferSize);
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void* out = malloc(outSize);
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void* roundtrip = malloc(dataSize);
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(void)argc;
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(void)argv;
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if (!buffer || !out || !roundtrip || !cctx || !dctx) {
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fprintf(stderr, "Allocation failure\n");
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return 1;
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}
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if (ZSTD_isError(ZSTD_CCtx_setParameter(cctx, ZSTD_c_windowLog, 31)))
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return 1;
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if (ZSTD_isError(ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, 1)))
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return 1;
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if (ZSTD_isError(ZSTD_CCtx_setParameter(cctx, ZSTD_c_overlapLog, 9)))
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return 1;
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if (ZSTD_isError(ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 1)))
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return 1;
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if (ZSTD_isError(ZSTD_CCtx_setParameter(cctx, ZSTD_c_strategy, ZSTD_btopt)))
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return 1;
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if (ZSTD_isError(ZSTD_CCtx_setParameter(cctx, ZSTD_c_targetLength, 7)))
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return 1;
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if (ZSTD_isError(ZSTD_CCtx_setParameter(cctx, ZSTD_c_minMatch, 7)))
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return 1;
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if (ZSTD_isError(ZSTD_CCtx_setParameter(cctx, ZSTD_c_searchLog, 1)))
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return 1;
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if (ZSTD_isError(ZSTD_CCtx_setParameter(cctx, ZSTD_c_hashLog, 10)))
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return 1;
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if (ZSTD_isError(ZSTD_CCtx_setParameter(cctx, ZSTD_c_chainLog, 10)))
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return 1;
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if (ZSTD_isError(ZSTD_DCtx_setParameter(dctx, ZSTD_d_windowLogMax, 31)))
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return 1;
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RDG_genBuffer(buffer, bufferSize, 1.0, 0.0, 0xbeefcafe);
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/* Compress 30 GB */
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{
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int i;
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for (i = 0; i < 10; ++i) {
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fprintf(stderr, "Compressing 1 GB\n");
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if (compress(cctx, dctx, out, outSize, buffer, dataSize, roundtrip, ZSTD_e_continue))
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return 1;
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}
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}
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fprintf(stderr, "Compressing 1 GB\n");
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if (compress(cctx, dctx, out, outSize, buffer, dataSize, roundtrip, ZSTD_e_end))
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return 1;
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fprintf(stderr, "Success!\n");
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free(roundtrip);
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free(out);
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free(buffer);
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ZSTD_freeDCtx(dctx);
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ZSTD_freeCCtx(cctx);
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return 0;
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}
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