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ASR3.1/TP05 Pointeurs Signaux/exo0.c

@@ -0,0 +1,58 @@
+#include<stdio.h>
+#include<stdlib.h>
+#include<string.h>
+
+
+
+/*La fonction map permet de parcourir le tableau. */
+void map(void *base,size_t n ,size_t size_elem,void(*f)(void *)){
+	int i;
+	char *ptr = (char*)base; 
+	for(i=0;i<n;i++) 
+		f((void*)(ptr+i*size_elem)); 
+}
+
+void print_int (void * i) {
+	printf("%d\n", *(int *)i ); // On force à le mettre en int
+}
+
+int cmp_int (const void* first, const void* second ) {
+	int firstInt = *(const int*)first;
+	int secondInt = *(const int*)second;
+	
+	return firstInt - secondInt;
+}
+
+
+void print_string (void * s) {
+	printf ("%s", *(char* *)s ); // char* * => un pointeur sur un tableau de caractère
+}
+
+
+int cmp_string (const void* a, const void* b) {
+	const char* *ia = (const char* *)a;
+    const char* *ib = (const char* *)b;
+
+    return strcmp(*ia, *ib);
+}
+
+
+
+int main(){
+
+	int    t1[10]={12,-7,1,-16,3,19,7,1,5,0};
+	char * t2[]={"chou","joujou","bijou","genou",
+		"caillou","hibou","pou"};
+
+		map(t1,10,sizeof(int),print_int);
+		printf("\n");
+		map(t2,7,sizeof(char*),print_string);
+		printf("\n");
+		qsort(t1,10,sizeof(int),cmp_int);
+		map(t1,10,sizeof(int),print_int);
+		printf("\n");
+		qsort(t2,7,sizeof(char *),cmp_string);
+		map(t2,7,sizeof(char*),print_string);
+		printf("\n");
+		
+}

ASR3.1/TP05 Pointeurs Signaux/exo1/exo1.c

@@ -0,0 +1,29 @@
+#include<unistd.h>
+#include<stdio.h>
+#include<stdlib.h>
+#include<signal.h>
+#include<stdint.h>
+#include<assert.h>
+#include "helpers.h"
+
+uint64_t tirs=0,
+		 tirs_in=0;
+
+double pi=0,
+	   t1;
+
+int main(int argc,char * argv[]){
+
+	double x,
+		   y;
+	t1 = tstamp();
+	alarm(5);
+
+	while(1){
+
+		x = ((double)rand())/(double)RAND_MAX;
+		y = ((double)rand())/(double)RAND_MAX;
+		tirs ++;
+		if (x*x+y*y<=1) tirs_in ++;
+	}
+}

ASR3.1/TP05 Pointeurs Signaux/exo1/helpers.c

@@ -0,0 +1,19 @@
+#include "helpers.h"
+#include <signal.h>
+#include <time.h>
+
+
+int set_signal_handler(int signo, void (*handler)(int)) {
+    struct sigaction sa;
+    sa.sa_handler = handler;    // call `handler` on signal
+    sigemptyset(&sa.sa_mask);   // don't block other signals in handler
+    sa.sa_flags = SA_RESTART;            //  restart system calls
+    return sigaction(signo, &sa, NULL);
+}
+
+double tstamp(void) {                                                                                    
+    struct timespec tv;
+    clock_gettime(CLOCK_REALTIME, &tv);
+    return tv.tv_sec + tv.tv_nsec * 1.0e-9;
+}
+

ASR3.1/TP05 Pointeurs Signaux/exo1/helpers.h

@@ -0,0 +1,6 @@
+#ifndef _HELPERS_H
+#define _HELPERS_H
+int set_signal_handler(int signo, void (*handler)(int));
+double tstamp(void);
+
+#endif