Re: how to create a .core file ?
Re: how to create a .core file ?
- Subject: Re: how to create a .core file ?
- From: James Quick <email@hidden>
- Date: Tue, 24 Jun 2003 02:57:12 -0400
On Monday, June 23, 2003, at 10:23 PM, Lloyd Dupont wrote:
hmm well,.. I don't want my program to quit.
in fact I want it to continue (at least if I catch the error at a
higher
level)...
I just want proces snapshot ....
but thanks for the idea :-)
What about forking first, then having the child immediately commit
suicide?
...
#import <signal.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
dumpcore()
{
int status;
int childpid;
struct rlimit corelimit;
/* Set RLIMIT_CORE limit (by default 0) to either the max value, or a
hardcoded
smaller value if you want to avoid getrlimit()
*/
getrlimit(RLIMIT_CORE, &corelimit);
corelimit.rlim_cur = corelimit.rlim_max;
setrlimit(RLIMIT_CORE, &corelimit);
childpid = fork();
if (childpid == 0) {
kill(SIGABRT, getpid());
sigpause(0); /* I'm not sure if we could possibly reach this, but if
so, wait to die. */
} else if (childpid == -1) {
/* report an error, raise an exception, etc. */
} else {
/* in parent if you want to wait until the child has finished dying.
*/
wait(&childpid);
}
}
If for some reason you are not ignoring SIGCHLD (the default)
you would use sigprocmask() to prevent delivery of SIGCHLD or
sigaction() to install a handler.
caveat. I am currently isomniac and have not played with signals in a
long time.
TIme for bed, hope this helped.
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