ceph/src/isa-l/igzip/igzip_inflate_perf.c

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   2   Copyright(c) 2011-2016 Intel Corporation All rights reserved.
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  28 **********************************************************************/
  29
  30 #include <stdio.h>
  31 #include <assert.h>
  32 #include <zlib.h>
  33 #include "huff_codes.h"
  34 #include "igzip_inflate_ref.h"
  35 #include "test.h"
  36
  37 #define BUF_SIZE 1024
  38 #define MIN_TEST_LOOPS   100
  39 #ifndef RUN_MEM_SIZE
  40 # define RUN_MEM_SIZE 1000000000
  41 #endif
  42
  43 int get_filesize(FILE * f)
  44 {
  45         int curr, end;
  46
  47         curr = ftell(f);        /* Save current position */
  48         fseek(f, 0L, SEEK_END);
  49         end = ftell(f);
  50         fseek(f, curr, SEEK_SET);       /* Restore position */
  51         return end;
  52 }
  53
  54 int main(int argc, char *argv[])
  55 {
  56         FILE *in, *out = NULL;
  57         unsigned char *inbuf, *outbuf, *tempbuf;
  58         int i, infile_size, iterations, outbuf_size, check;
  59         uint64_t inbuf_size;
  60         struct inflate_state state;
  61
  62         if (argc > 3 || argc < 2) {
  63                 fprintf(stderr, "Usage: igzip_inflate_file_perf  infile\n"
  64                         "\t - Runs multiple iterations of igzip on a file to "
  65                         "get more accurate time results.\n");
  66                 exit(0);
  67         }
  68         in = fopen(argv[1], "rb");
  69         if (!in) {
  70                 fprintf(stderr, "Can't open %s for reading\n", argv[1]);
  71                 exit(0);
  72         }
  73         if (argc > 2) {
  74                 out = fopen(argv[2], "wb");
  75                 if (!out) {
  76                         fprintf(stderr, "Can't open %s for writing\n", argv[2]);
  77                         exit(0);
  78                 }
  79                 printf("outfile=%s\n", argv[2]);
  80         }
  81         printf("igzip_inflate_perf: \n");
  82         fflush(0);
  83         /* Allocate space for entire input file and output
  84          * (assuming some possible expansion on output size)
  85          */
  86         infile_size = get_filesize(in);
  87
  88         if (infile_size != 0) {
  89                 outbuf_size = infile_size;
  90                 iterations = RUN_MEM_SIZE / infile_size;
  91         } else {
  92                 printf("Error: input file has 0 size\n");
  93                 exit(0);
  94         }
  95         if (iterations < MIN_TEST_LOOPS)
  96                 iterations = MIN_TEST_LOOPS;
  97
  98         tempbuf = malloc(infile_size);
  99         if (tempbuf == NULL) {
 100                 fprintf(stderr, "Can't allocate temp buffer memory\n");
 101                 exit(0);
 102         }
 103         inbuf_size = compressBound(infile_size);
 104         inbuf = malloc(inbuf_size);
 105         if (inbuf == NULL) {
 106                 fprintf(stderr, "Can't allocate input buffer memory\n");
 107                 exit(0);
 108         }
 109         outbuf = malloc(infile_size);
 110         if (outbuf == NULL) {
 111                 fprintf(stderr, "Can't allocate output buffer memory\n");
 112                 exit(0);
 113         }
 114         fread(tempbuf, 1, infile_size, in);
 115         i = compress2(inbuf, &inbuf_size, tempbuf, infile_size, 9);
 116         if (i != Z_OK) {
 117                 printf("Compression of input file failed\n");
 118                 exit(0);
 119         }
 120         printf("igzip_inflate_perf: %s %d iterations\n", argv[1], iterations);
 121         /* Read complete input file into buffer */
 122         fclose(in);
 123         struct perf start, stop;
 124         perf_start(&start);
 125
 126         for (i = 0; i < iterations; i++) {
 127                 igzip_inflate_init(&state, inbuf + 2, inbuf_size - 2, outbuf, outbuf_size);
 128
 129                 check = igzip_inflate(&state);
 130                 if (check) {
 131                         printf("Error in decompression with error %d\n", check);
 132                         break;
 133                 }
 134         }
 135         perf_stop(&stop);
 136
 137         printf("  file %s - in_size=%d out_size=%d iter=%d\n", argv[1],
 138                infile_size, state.out_buffer.total_out, i);
 139
 140         printf("igzip_file: ");
 141         perf_print(stop, start, (long long)infile_size * i);
 142
 143         printf("End of igzip_inflate_perf\n\n");
 144         fflush(0);
 145
 146         free(inbuf);
 147         free(outbuf);
 148         free(tempbuf);
 149
 150         return 0;
 151 }