ceph/src/spdk/isa-l/igzip/igzip_hist_perf.c

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   2   Copyright(c) 2011-2016 Intel Corporation All rights reserved.
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  17   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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  28 **********************************************************************/
  29
  30 #define _FILE_OFFSET_BITS 64
  31 #include <stdio.h>
  32 #include <stdlib.h>
  33 #include <assert.h>
  34 #include <string.h>
  35 #include "igzip_lib.h"
  36 #include "test.h"
  37
  38 #define BUF_SIZE 1024
  39 #define MIN_TEST_LOOPS   8
  40 #ifndef RUN_MEM_SIZE
  41 # define RUN_MEM_SIZE 2000000000
  42 #endif
  43
  44 void print_histogram(struct isal_huff_histogram *histogram)
  45 {
  46         int i;
  47         printf("Lit Len histogram");
  48         for (i = 0; i < ISAL_DEF_LIT_LEN_SYMBOLS; i++) {
  49                 if (i % 16 == 0)
  50                         printf("\n");
  51                 else
  52                         printf(", ");
  53                 printf("%4lu", histogram->lit_len_histogram[i]);
  54         }
  55         printf("\n");
  56
  57         printf("Dist histogram");
  58         for (i = 0; i < ISAL_DEF_DIST_SYMBOLS; i++) {
  59                 if (i % 16 == 0)
  60                         printf("\n");
  61                 else
  62                         printf(", ");
  63                 printf("%4lu", histogram->dist_histogram[i]);
  64         }
  65         printf("\n");
  66 }
  67
  68 int main(int argc, char *argv[])
  69 {
  70         FILE *in;
  71         unsigned char *inbuf, *outbuf;
  72         int i, iterations, avail_in;
  73         uint64_t infile_size, outbuf_size;
  74         struct isal_huff_histogram histogram1, histogram2;
  75
  76         memset(&histogram1, 0, sizeof(histogram1));
  77         memset(&histogram2, 0, sizeof(histogram2));
  78
  79         if (argc > 3 || argc < 2) {
  80                 fprintf(stderr, "Usage: igzip_file_perf  infile [outfile]\n"
  81                         "\t - Runs multiple iterations of igzip on a file to "
  82                         "get more accurate time results.\n");
  83                 exit(0);
  84         }
  85         in = fopen(argv[1], "rb");
  86         if (!in) {
  87                 fprintf(stderr, "Can't open %s for reading\n", argv[1]);
  88                 exit(0);
  89         }
  90
  91         /* Allocate space for entire input file and output
  92          * (assuming some possible expansion on output size)
  93          */
  94         infile_size = get_filesize(in);
  95         outbuf_size = 2 * infile_size;
  96
  97         if (infile_size != 0)
  98                 iterations = RUN_MEM_SIZE / infile_size;
  99         else
 100                 iterations = MIN_TEST_LOOPS;
 101
 102         if (iterations < MIN_TEST_LOOPS)
 103                 iterations = MIN_TEST_LOOPS;
 104
 105         inbuf = malloc(infile_size);
 106         outbuf = malloc(outbuf_size);
 107         if (inbuf == NULL) {
 108                 fprintf(stderr, "Can't allocate input buffer memory\n");
 109                 exit(0);
 110         }
 111
 112         if (outbuf == NULL) {
 113                 fprintf(stderr, "Can't allocate output buffer memory\n");
 114                 exit(0);
 115         }
 116
 117         avail_in = fread(inbuf, 1, infile_size, in);
 118         if (avail_in != infile_size) {
 119                 fprintf(stderr, "Couldn't fit all of input file into buffer\n");
 120                 exit(0);
 121         }
 122
 123         struct perf start, stop;
 124         perf_start(&start);
 125
 126         for (i = 0; i < iterations; i++)
 127                 isal_update_histogram(inbuf, infile_size, &histogram1);
 128         perf_stop(&stop);
 129
 130         printf("  file %s - in_size=%lu iter=%d\n", argv[1], infile_size, i);
 131         printf("igzip_file: ");
 132         perf_print(stop, start, (long long)infile_size * i);
 133
 134         fclose(in);
 135         fflush(0);
 136         return 0;
 137 }