87 lines
2.4 KiB
C
87 lines
2.4 KiB
C
/* xdelta3 - delta compression tools and library
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Copyright 2016 Joshua MacDonald
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#include "test.h"
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usize_t bench_speed(const uint8_t *from_buf, const size_t from_len,
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const uint8_t *to_buf, const size_t to_len,
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uint8_t *delta_buf, const size_t delta_alloc,
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int flags) {
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usize_t delta_size;
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int ret = xd3_encode_memory(to_buf, to_len, from_buf, from_len,
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delta_buf, &delta_size, delta_alloc, flags);
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if (ret != 0) {
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fprintf(stderr, "encode failure: %d: %s\n", ret, xd3_strerror(ret));
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abort();
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}
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return delta_size;
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}
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int main(int argc, char **argv) {
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int repeat, level;
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char *from, *to;
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uint8_t *from_buf = NULL, *to_buf = NULL, *delta_buf = NULL;
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size_t from_len = 0, to_len, delta_alloc, delta_size = 0;
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long start, finish;
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int i, ret;
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int flags;
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if (argc != 5) {
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fprintf(stderr, "usage: speed_test LEVEL COUNT FROM TO\n");
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return 1;
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}
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level = atoi(argv[1]);
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repeat = atoi(argv[2]);
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from = argv[3];
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to = argv[4];
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flags = (level << XD3_COMPLEVEL_SHIFT) & XD3_COMPLEVEL_MASK;
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if ((strcmp(from, "null") != 0 &&
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(ret = read_whole_file(from, &from_buf, &from_len))) ||
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(ret = read_whole_file(to, &to_buf, &to_len))) {
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fprintf(stderr, "read_whole_file error\n");
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goto exit;
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}
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delta_alloc = to_len * 11 / 10;
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delta_buf = main_malloc(delta_alloc);
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start = get_millisecs_now();
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for (i = 0; i < repeat; ++i) {
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delta_size = bench_speed(from_buf, from_len,
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to_buf, to_len, delta_buf, delta_alloc, flags);
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}
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finish = get_millisecs_now();
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fprintf(stderr,
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"STAT: encode %3.2f ms from %s to %s repeat %d %zdbit delta %zd\n",
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(double)(finish - start) / repeat, from, to, repeat, sizeof (xoff_t) * 8, delta_size);
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ret = 0;
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if (0) {
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exit:
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ret = 1;
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}
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main_free(to_buf);
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main_free(from_buf);
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main_free(delta_buf);
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return ret;
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}
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