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Finito di aspettare ... quasi.
[gapil.git]
/
sources
/
ForkTest.c
diff --git
a/sources/ForkTest.c
b/sources/ForkTest.c
index d57ef7a7436c469f0620ce45c3dfee50d9d31fe1..03ddf75eadfe4c37ab7536cbe7d4e0401a0fcc1b 100644
(file)
--- a/
sources/ForkTest.c
+++ b/
sources/ForkTest.c
@@
-26,7
+26,7
@@
*
* Usage: forktest -h give all info's
*
*
* Usage: forktest -h give all info's
*
- * $Id: ForkTest.c,v 1.
4 2001/09/14 22:16:4
1 piccardi Exp $
+ * $Id: ForkTest.c,v 1.
6 2001/09/21 17:10:5
1 piccardi Exp $
*
****************************************************************/
/*
*
****************************************************************/
/*
@@
-48,14
+48,15
@@
int main(int argc, char *argv[])
*/
int nchild, i;
pid_t pid;
*/
int nchild, i;
pid_t pid;
- int wait_child=0;
- int wait_parent=0;
+ int wait_child = 0;
+ int wait_parent = 0;
+ int wait_end = 0;
/*
* Input section: decode command line parameters
* Use getopt function
*/
opterr = 0; /* don't want writing to stderr */
/*
* Input section: decode command line parameters
* Use getopt function
*/
opterr = 0; /* don't want writing to stderr */
- while ( (i = getopt(argc, argv, "hp:c:")) != -1) {
+ while ( (i = getopt(argc, argv, "hp:c:
e:
")) != -1) {
switch (i) {
/*
* Handling options
switch (i) {
/*
* Handling options
@@
-66,10
+67,13
@@
int main(int argc, char *argv[])
return -1;
break;
case 'c': /* take wait time for childen */
return -1;
break;
case 'c': /* take wait time for childen */
- wait_child
=
strtol(optarg, NULL, 10); /* convert input */
+ wait_child
=
strtol(optarg, NULL, 10); /* convert input */
break;
case 'p': /* take wait time for childen */
break;
case 'p': /* take wait time for childen */
- wait_parent=strtol(optarg, NULL, 10); /* convert input */
+ wait_parent = strtol(optarg, NULL, 10); /* convert input */
+ break;
+ case 'e': /* take wait before parent exit */
+ wait_end = strtol(optarg, NULL, 10); /* convert input */
break;
case '?': /* unrecognized options */
printf("Unrecognized options -%c\n",optopt);
break;
case '?': /* unrecognized options */
printf("Unrecognized options -%c\n",optopt);
@@
-90,7
+94,7
@@
int main(int argc, char *argv[])
usage();
}
nchild = atoi(argv[optind]);
usage();
}
nchild = atoi(argv[optind]);
- printf("
Test for forking %d child\n"
, nchild);
+ printf("
Process %d: forking %d child\n", getpid()
, nchild);
/* loop to fork children */
for (i=0; i<nchild; i++) {
if ( (pid = fork()) < 0) {
/* loop to fork children */
for (i=0; i<nchild; i++) {
if ( (pid = fork()) < 0) {
@@
-101,7
+105,7
@@
int main(int argc, char *argv[])
if (pid == 0) { /* child */
printf("Child %d successfully executing\n", ++i);
if (wait_child) sleep(wait_child);
if (pid == 0) { /* child */
printf("Child %d successfully executing\n", ++i);
if (wait_child) sleep(wait_child);
- printf("Child %d
exiting\n", i
);
+ printf("Child %d
, parent %d, exiting\n", i, getppid()
);
exit(0);
} else { /* parent */
printf("Spawned %d child, pid %d \n", i+1, pid);
exit(0);
} else { /* parent */
printf("Spawned %d child, pid %d \n", i+1, pid);
@@
-110,6
+114,7
@@
int main(int argc, char *argv[])
}
}
/* normal exit */
}
}
/* normal exit */
+ if (wait_end) sleep(wait_end);
return 0;
}
/*
return 0;
}
/*
@@
-118,7
+123,11
@@
int main(int argc, char *argv[])
void usage(void) {
printf("Program forktest: fork a given number of child \n");
printf("Usage:\n");
void usage(void) {
printf("Program forktest: fork a given number of child \n");
printf("Usage:\n");
- printf(" forktest [-h] child to fork \n");
+ printf(" forktest [-h]
[-p sec] [-c sec] [-e sec]
child to fork \n");
printf(" -h print this help\n");
printf(" -h print this help\n");
+ printf(" -p sec wait sec seconds before next fork\n");
+ printf(" -c sec wait sec seconds before child termination\n");
+ printf(" -e sec wait sec seconds before parent return\n");
+
exit(1);
}
exit(1);
}