raise
Defined in header <signal.h>
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Sends signal sig to the program. The signal handler, specified using signal(), is invoked.
If the user-defined signal handling strategy is not set using signal() yet, it is implementation-defined whether the signal will be ignored or default handler will be invoked.
Parameters
sig
-
the signal to be sent. It can be an implementation-defined value or one of the following values:
SIGABRTSIGFPESIGILLSIGINTSIGSEGVSIGTERM defines signal types (macro constant)
Return value
0 upon success, non-zero value on failure.
Example
#include <signal.h>
#include <stdio.h>
void signal_handler(int signal)
{
printf("Received signal %d\n", signal);
}
int main(void)
{
// Install a signal handler.
signal(SIGTERM, signal_handler);
printf("Sending signal %d\n", SIGTERM);
raise(SIGTERM);
printf("Exit main()\n");
}Output:
Sending signal 15
Received signal 15
Exit main()References
C11 standard (ISO/IEC 9899:2011):
- 7.14.2.1 The raise function (p: 267)
C99 standard (ISO/IEC 9899:1999):
- 7.14.2.1 The raise function (p: 248)
C89/C90 standard (ISO/IEC 9899:1990):
- 4.7.2.1 The raise function
See also
| sets a signal handler for particular signal (function) |
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