|
Unix VPS
Support
FAQ
Network
Miscellaneous
|
| explain_shmctl_or_die(3) | FreeBSD Library Functions Manual | explain_shmctl_or_die(3) |
NAME
explain_shmctl_or_die - shared memory control and report errorsSYNOPSIS
#include <libexplain/shmctl.h>void explain_shmctl_or_die(int shmid, int command, struct shmid_ds
*data);
int explain_shmctl_on_error(int shmid, int command, struct shmid_ds
*data);
DESCRIPTION
The explain_shmctl_or_die function is used to call the shmctl(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_shmctl(3) function, and then the process terminates by calling exit(EXIT_FAILURE).The explain_shmctl_on_error function is used to call the shmctl(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_shmctl(3) function, but still returns to the caller.
- shmid
- The shmid, exactly as to be passed to the shmctl(2) system call.
- command
- The command, exactly as to be passed to the shmctl(2) system call.
- data
- The data, exactly as to be passed to the shmctl(2) system call.
RETURN VALUE
The explain_shmctl_or_die function only returns on success, see shmctl(2) for more information. On failure, prints an explanation and exits, it does not return.The explain_shmctl_on_error function always returns the value return by the wrapped shmctl(2) system call.
EXAMPLE
The explain_shmctl_or_die function is intended to be used in a fashion similar to the following example:explain_shmctl_or_die(shmid, command, data);
SEE ALSO
- shmctl(2)
- shared memory control
- explain_shmctl(3)
- explain shmctl(2) errors
- exit(2)
- terminate the calling process
COPYRIGHT
libexplain version 1.3Copyright (C) 2011 Peter Miller
Visit the GSP FreeBSD Man Page Interface.
Output converted with ManDoc.