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/* -*- c-file-style: "GNU" -*- */
/*
* Copyright (C) CNRS, INRIA, Université Bordeaux 1, Télécom SudParis
* See COPYING in top-level directory.
*/
#include <sys/time.h>
#include <semaphore.h>
#include <unistd.h>
#include <time.h>
#include <pthread.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
/* Number of iterations */
#define ITER 10
/* Number of threads */
#define NTH 2
typedef union {
unsigned long long tick;
struct {
unsigned low;
unsigned high;
};
} tick_t;
int fd[2][2];
sem_t thread_ready;
#define TICK_DIFF(t1, t2) \
((t2).tick - (t1).tick)
#define TIME_DIFF(t1, t2) \
((t2.tv_sec - t1.tv_sec) * 1000000 + (t2.tv_usec - t1.tv_usec))
// Debugging part, print out only if debugging level of the system is verbose or more
int _debug = -77;
void debug(char *fmt, ...) {
if (_debug == -77) {
char *buf = getenv("DEBUG_LEVEL");
if (buf == NULL)
_debug = 0;
else
_debug = atoi(buf);
}
if (_debug >= 2) { // debug verbose mode
va_list va;
va_start(va, fmt);
vfprintf(stderr, fmt, va);
va_end(va);
}
}
// end of debugging part
/* Fake computation of usec microseconds */
void compute(int usec) {
struct timeval tv1, tv2;
gettimeofday(&tv1, NULL);
do {
gettimeofday(&tv2, NULL);
} while (TIME_DIFF(tv1, tv2) < usec);
}
void test_malloc() {
int i, j;
char*buffer[ITER];
for (i = 0; i < ITER; i++) {
int alloc_size = (1 + i) * 1024;
debug("\tloop %d/%d: allocating %d bytes\n", i, ITER, alloc_size);
buffer[i] = malloc(alloc_size);
for (j = 0; j < (1 + i) * 1024; j++) {
buffer[i][j] = 'a';
}
/* compute for 1ms */
compute(50000);
free(buffer[i]);
compute(10000);
}
}
void test_realloc() {
int i, j;
char*buffer[ITER];
for (i = 0; i < ITER; i++) {
int alloc_size = (1 + i) * 1024;
debug("\tloop %d/%d: allocating %d bytes\n", i, ITER, alloc_size);
buffer[i] = malloc(alloc_size);
for (j = 0; j < (1 + i) * 1024; j++) {
buffer[i][j] = 'a';
}
/* compute for 1ms */
compute(20000);
alloc_size *= 2;
debug("\t\tloop %d/%d: reallocating %d bytes\n", i, ITER, alloc_size);
buffer[i] = realloc(buffer[i], alloc_size);
compute(20000);
free(buffer[i]);
compute(10000);
}
}
void test_calloc() {
int i, j;
char*buffer[ITER];
for (i = 0; i < ITER; i++) {
int alloc_size = (1 + i) * 1024;
debug("\tloop %d/%d: allocating %d bytes\n", i, ITER, alloc_size);
buffer[i] = calloc(alloc_size, sizeof(uint8_t));
for (j = 0; j < (1 + i) * 1024; j++) {
buffer[i][j] = 'a';
}
/* compute for 1ms */
compute(50000);
free(buffer[i]);
compute(10000);
}
}
int main(int argc, char**argv) {
char* buffer[ITER];
int i, j;
debug("Testing malloc\n");
test_malloc();
debug("1/2 done\n");
compute(100000);
test_malloc();
debug("2/2 done\n");
compute(100000);
debug("Testing realloc\n");
test_realloc();
debug("realloc done\n");
compute(100000);
debug("Testing calloc\n");
test_calloc();
debug("calloc done\n");
return 0;
}
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