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/* Copyright (C) 2007 Josh MacDonald */
#define NOT_MAIN 1
#include "xdelta3.h"
#include "xdelta3.c"
usize_t bench_speed(const uint8_t *from_buf, const size_t from_len,
const uint8_t *to_buf, const size_t to_len,
uint8_t *delta_buf, const size_t delta_alloc,
int flags) {
usize_t delta_size;
int ret = xd3_encode_memory(to_buf, to_len, from_buf, from_len,
delta_buf, &delta_size, delta_alloc, flags);
if (ret != 0) {
fprintf(stderr, "encode failure: %d: %s\n", ret, xd3_strerror(ret));
abort();
}
return delta_size;
}
int read_whole_file(const char *name,
uint8_t **buf_ptr,
size_t *buf_len) {
main_file file;
int ret;
xoff_t len;
size_t nread;
main_file_init(&file);
file.filename = name;
ret = main_file_open(&file, name, XO_READ);
if (ret != 0) {
goto exit;
}
ret = main_file_stat(&file, &len, 1);
if (ret != 0) {
goto exit;
}
(*buf_len) = (size_t)len;
(*buf_ptr) = main_malloc(*buf_len);
ret = main_file_read(&file, *buf_ptr, *buf_len, &nread,
"read failed");
if (ret == 0 && *buf_len == nread) {
ret = 0;
} else {
fprintf(stderr, "invalid read\n");
ret = XD3_INTERNAL;
}
exit:
main_file_cleanup(&file);
return ret;
}
int main(int argc, char **argv) {
int repeat, level;
char *from, *to;
uint8_t *from_buf = NULL, *to_buf = NULL, *delta_buf = NULL;
size_t from_len, to_len, delta_alloc, delta_size = 0;
long start, finish;
int i, ret;
int flags;
if (argc != 5) {
fprintf(stderr, "usage: speed_test LEVEL COUNT FROM TO\n");
return 1;
}
level = atoi(argv[1]);
repeat = atoi(argv[2]);
from = argv[3];
to = argv[4];
flags = (level << XD3_COMPLEVEL_SHIFT) & XD3_COMPLEVEL_MASK;
if ((ret = read_whole_file(from, &from_buf, &from_len)) ||
(ret = read_whole_file(to, &to_buf, &to_len))) {
fprintf(stderr, "read_whole_file error\n");
goto exit;
}
delta_alloc = to_len * 11 / 10;
delta_buf = main_malloc(delta_alloc);
start = get_millisecs_now();
for (i = 0; i < repeat; ++i) {
delta_size = bench_speed(from_buf, from_len, to_buf, to_len, delta_buf, delta_alloc, flags);
}
finish = get_millisecs_now();
fprintf(stderr,
"STAT: encode %3.2f ms from %s to %s repeat %d %dbit delta %d\n",
(double)(finish - start) / repeat, from, to, repeat, sizeof (xoff_t) * 8, delta_size);
ret = 0;
if (0) {
exit:
ret = 1;
}
main_free(to_buf);
main_free(from_buf);
main_free(delta_buf);
return ret;
}
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