raise

int raise( int sig );

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

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");
}

Sending signal 15
Received signal 15
Exit main()

References

• C17 standard (ISO/IEC 9899:2018):
• 7.14.2.1 The raise function (p: 194-195)
• 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