isa-l/igzip/igzip_hist_perf.c

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#define _FILE_OFFSET_BITS 64
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <string.h>
#include "igzip_lib.h"
#include "test.h"

#define BUF_SIZE       1024
#define MIN_TEST_LOOPS 8
#ifndef RUN_MEM_SIZE
#define RUN_MEM_SIZE 2000000000
#endif

void
print_histogram(struct isal_huff_histogram *histogram)
{
        int i;
        printf("Lit Len histogram");
        for (i = 0; i < ISAL_DEF_LIT_LEN_SYMBOLS; i++) {
                if (i % 16 == 0)
                        printf("\n");
                else
                        printf(", ");
                printf("%4lu", histogram->lit_len_histogram[i]);
        }
        printf("\n");

        printf("Dist histogram");
        for (i = 0; i < ISAL_DEF_DIST_SYMBOLS; i++) {
                if (i % 16 == 0)
                        printf("\n");
                else
                        printf(", ");
                printf("%4lu", histogram->dist_histogram[i]);
        }
        printf("\n");
}

int
main(int argc, char *argv[])
{
        FILE *in;
        unsigned char *inbuf;
        int iterations, avail_in;
        uint64_t infile_size;
        struct isal_huff_histogram histogram1, histogram2;

        memset(&histogram1, 0, sizeof(histogram1));
        memset(&histogram2, 0, sizeof(histogram2));

        if (argc > 3 || argc < 2) {
                fprintf(stderr, "Usage: igzip_file_perf  infile [outfile]\n"
                                "\t - Runs multiple iterations of igzip on a file to "
                                "get more accurate time results.\n");
                exit(0);
        }
        in = fopen(argv[1], "rb");
        if (!in) {
                fprintf(stderr, "Can't open %s for reading\n", argv[1]);
                exit(0);
        }

        /* Allocate space for entire input file and output
         * (assuming some possible expansion on output size)
         */
        infile_size = get_filesize(in);

        if (infile_size != 0)
                iterations = RUN_MEM_SIZE / infile_size;
        else
                iterations = MIN_TEST_LOOPS;

        if (iterations < MIN_TEST_LOOPS)
                iterations = MIN_TEST_LOOPS;

        inbuf = malloc(infile_size);
        if (inbuf == NULL) {
                fprintf(stderr, "Can't allocate input buffer memory\n");
                exit(0);
        }

        avail_in = fread(inbuf, 1, infile_size, in);
        if (avail_in != infile_size) {
                free(inbuf);
                fprintf(stderr, "Couldn't fit all of input file into buffer\n");
                exit(0);
        }

        struct perf start;
        BENCHMARK(&start, BENCHMARK_TIME, isal_update_histogram(inbuf, infile_size, &histogram1));
        printf("  file %s - in_size=%lu\n", argv[1], infile_size);
        printf("igzip_hist_file: ");
        perf_print(start, (long long) infile_size);

        fclose(in);
        fflush(0);
        free(inbuf);

        return 0;
}