raise

Remonter à Signal.h - Index

Header File

signal.h

Category

Process Control Routines

Prototype

int raise(int sig);

Description

Sends a software signal to the executing program.

raise sends a signal of type sig to the program. If the program has installed a signal handler for the signal type specified by sig, that handler will be executed. If no handler has been installed, the default action for that signal type will be taken.

The signal types currently defined in signal.h are noted here:

SIGABRT	Abnormal termination
SIGFPE	Bad floating-point operation
SIGILL	Illegal instruction
SIGINT	Ctrl-C interrupt
SIGSEGV	Invalid access to storage
SIGTERM	Request for program termination
SIGUSR1	User-defined signal
SIGUSR2	User-defined signal
SIGUSR3	User-defined signal
SIGBREAK	Ctrl-Break interrupt

Remarque :  SIGABRT isn’t generated by C++Builder during normal operation. It can, however, be generated by abort, raise, or unhandled exceptions.

Return Value

On success, raise returns 0.

On error it returns nonzero.

Example

 #include <signal.h>
 int main(void)
 {
     int a, b;
     a = 10;
     b = 0;
     if (b == 0)
     /* preempt divide by zero error */
        raise(SIGFPE);
     a = a / b;
     return 0;
 }

Portability

POSIX	Win32	ANSI C	ANSI C++
+	+	+	+