Knowledge Base

BSPs and drivers

Community resources

Product documentation

Questions?

Creating a snapshot dump file

________________________________________________________________________

Applicable Environment

________________________________________________________________________

Topic: Create core dump of running process
SDP: 6.4.1
Target: Any supported target

________________________________________________________________________

Recommendation

________________________________________________________________________

You can create a dump file of a running process by dropping a signal on it. But this terminates the process.

Another way to get a dump file is to pipe the pid of the process to /proc/dumper. The process keeps running!

> echo 12345 > /proc/dumper

C-code:

char pidstr[20];
int fd = open("/proc/dumper", O_RDWR);
sprintf(pidstr, "%d", getpid());
write(fd, pidstr, strlen(pidstr));
close(fd);

This will let dumper STOP the process, generate a core file, and then let the application keeps running.

________________________________________________________________________

NOTE: This entry has been validated against the SDP version listed above. Use caution when considering this advice for any other SDP version. For supported releases, please reach out to QNX Technical Support if you have any questions/concerns.

________________________________________________________________________

Related Attachments

None Found

Please contact us with your questions or concerns.