116 lines
1.7 KiB
C
116 lines
1.7 KiB
C
#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <windows.h>
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int verbose = 0;
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void
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v(char *fmt, ...)
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{
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va_list ap;
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if (!verbose) return;
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va_start(ap, fmt);
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vfprintf(stdout, fmt, ap);
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va_end(ap);
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}
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#define TSIZE (1024 * 1024 * 16)
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unsigned long start_tic;
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void
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start(FILE *f)
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{
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fseek(f, 0, SEEK_SET);
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start_tic = GetTickCount();
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}
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void
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end()
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{
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unsigned long end_tic = GetTickCount();
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printf("%6d", end_tic - start_tic);
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}
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void
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test(int linesz, int cr)
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{
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FILE *f = fopen("iospeed.dat", "wb");
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char buf[65536];
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int i, fd;
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memset(buf, 'x', linesz);
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buf[linesz-1] = '\n';
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if (cr)
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buf[linesz-2] = '\r';
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for (i=0; i<TSIZE; i += linesz)
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fwrite(buf, 1, linesz, f);
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fclose(f);
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f = fopen("iospeed.dat", "rt");
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fd = fileno(f);
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printf("%6d%6d", linesz, cr);
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for (i=0; i<TSIZE; i+= 65536)
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read(fd, buf, 65536);
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start(f);
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while (getc(f) != EOF);
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end();
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start(f);
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while (fread(buf, 1, 256, f) > 0);
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end();
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start(f);
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while (fgets(buf, 64436, f));
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end();
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f = fopen("iospeed.dat", "rb");
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fd = fileno(f);
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for (i=0; i<TSIZE; i+= 65536)
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read(fd, buf, 65536);
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start(f);
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while (getc(f) != EOF);
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end();
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start(f);
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while (fread(buf, 1, 256, f) > 0);
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end();
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start(f);
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while (fgets(buf, 64436, f));
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end();
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printf("\n");
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}
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int
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main(int argc, char **argv)
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{
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if (argc > 1 && strcmp(argv[1],"-v") == 0)
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verbose = 1;
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setbuf(stdout, 0);
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printf(" ----- text ----- ---- binary ----\n");
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printf("linesz cr getc fread fgets getc fread fgets\n");
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test(4, 0);
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test(64, 0);
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test(4096, 0);
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test(4, 1);
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test(64, 1);
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test(4096, 1);
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remove ("iospeed.dat");
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return 0;
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}
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