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root |
1.1 |
#include <stdio.h> |
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#include <assert.h> |
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#include <string.h> |
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root |
1.7 |
#include <time.h> |
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#include <sys/time.h> |
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#include <sys/types.h> |
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#include <sys/socket.h> |
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#include <sys/ioctl.h> |
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root |
1.9 |
#include <sys/stat.h> |
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root |
1.7 |
#include <math.h> |
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root |
1.8 |
#include <signal.h> |
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root |
1.7 |
#include <X11/Xlib.h> |
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root |
1.1 |
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#include "lzf.h" |
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root |
1.4 |
//#include "fastlz.c" |
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root |
1.1 |
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typedef unsigned long tval; |
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typedef unsigned long long stamp64; |
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extern inline tval stamp(void) |
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{ |
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tval tsc; |
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asm volatile("rdtsc" : "=a" (tsc) : : "edx"); |
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return tsc; |
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} |
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extern inline tval measure(tval t) |
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{ |
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tval tsc; |
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asm volatile("rdtsc" : "=a" (tsc) : : "edx"); |
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if (tsc>t) |
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return tsc-t; |
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else |
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return t-tsc; |
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} |
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root |
1.8 |
static void sigu (int signum) |
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{ |
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} |
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int eventfd(unsigned int,int); |
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root |
1.4 |
#define DSIZE 2821120 |
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root |
1.1 |
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unsigned char data[DSIZE], data2[DSIZE*2], data3[DSIZE*2]; |
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int main(void) |
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{ |
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tval s; |
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tval si[1000]; |
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int i, l, j; |
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int min = 1<<30; |
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root |
1.2 |
int lp; |
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root |
1.7 |
char buf[8192]; |
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int p[2]; |
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root |
1.8 |
int evfd = eventfd (0, 0); |
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long ctr = 1; |
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root |
1.9 |
struct stat sbuf; |
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root |
1.7 |
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pipe (p); |
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root |
1.1 |
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FILE *f = fopen ("data", "r"); |
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fread (data, DSIZE, 1, f); |
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fclose (f); |
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root |
1.7 |
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root |
1.8 |
signal (SIGURG, sigu); |
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root |
1.7 |
for (lp = 0; lp < 100000; lp++) { |
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root |
1.6 |
s=stamp(); |
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root |
1.7 |
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root |
1.9 |
//snprintf (buf, 64, "<1.%llx>", (unsigned long long)0xa234567812ULL); |
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root |
1.10 |
getpgrp(); |
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root |
1.8 |
//kill (0, SIGURG); |
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//write (evfd, &ctr, 8); |
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//read (evfd, &ctr, 8); |
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root |
1.9 |
//write (p[1], &buf, 1); |
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//read (p[0], &buf, 4); |
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//stat ("/etc/passwd", &sbuf); |
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root |
1.10 |
//struct timeval tv; |
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//gettimeofday (&tv, 0); |
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l = lzf_compress (data, DSIZE, data2, DSIZE*2); |
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assert(l); |
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root |
1.7 |
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root |
1.6 |
si[0]=measure(s); |
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root |
1.7 |
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root |
1.10 |
j = lzf_decompress (data2, l, data3, DSIZE*2); |
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assert (j == DSIZE); |
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root |
1.1 |
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printf ("\r%10d (%d) ", si[0], l); |
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if (si[0] < min && si[0] > 0) |
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{ |
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printf ("\n"); |
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min = si[0]; |
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} |
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fflush (stdout); |
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root |
1.7 |
//assert (memcmp (data, data3, DSIZE) == 0); |
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root |
1.1 |
} |
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return 0; |
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} |
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