| 26 | } |
| 27 | |
| 28 | static int benchmark(void) |
| 29 | { |
| 30 | const int bufsize = 10*1024*1024; |
| 31 | char *data = malloc(bufsize); |
| 32 | if (!data) { |
| 33 | fprintf(stderr, "out of memory\n"); |
| 34 | return 1; |
| 35 | } |
| 36 | char *compressed_data = malloc(bufsize); |
| 37 | if (!compressed_data) { |
| 38 | free(data); |
| 39 | fprintf(stderr, "out of memory\n"); |
| 40 | return 1; |
| 41 | } |
| 42 | int i, l = strlen(usage_text) + 1; |
| 43 | for (i = 0; i + l < bufsize; i += l) { |
| 44 | memcpy(data + i, usage_text, l); |
| 45 | } |
| 46 | memset(data + i, 0, bufsize - i); |
| 47 | const struct typedesc_t *algo; |
| 48 | for (algo = &types_cbfs_compression[0]; algo->name != NULL; algo++) { |
| 49 | int outsize = bufsize; |
| 50 | printf("measuring '%s'\n", algo->name); |
| 51 | comp_func_ptr comp = compression_function(algo->type); |
| 52 | if (comp == NULL) { |
| 53 | printf("no handler associated with algorithm\n"); |
| 54 | free(data); |
| 55 | free(compressed_data); |
| 56 | return 1; |
| 57 | } |
| 58 | |
| 59 | struct timespec t_s, t_e; |
| 60 | clock_gettime(CLOCK_MONOTONIC, &t_s); |
| 61 | |
| 62 | if (comp(data, bufsize, compressed_data, &outsize)) { |
| 63 | printf("compression failed"); |
| 64 | return 1; |
| 65 | } |
| 66 | |
| 67 | clock_gettime(CLOCK_MONOTONIC, &t_e); |
| 68 | printf("compressing %d bytes to %d took %ld seconds\n", |
| 69 | bufsize, outsize, |
| 70 | (long)(t_e.tv_sec - t_s.tv_sec)); |
| 71 | } |
| 72 | free(data); |
| 73 | free(compressed_data); |
| 74 | return 0; |
| 75 | } |
| 76 | |
| 77 | static int compress(char *infile, char *outfile, char *algoname, |
| 78 | int write_header) |