mirror of
https://github.com/autc04/Retro68.git
synced 2024-08-30 02:29:07 +00:00
81 lines
1.7 KiB
C
81 lines
1.7 KiB
C
/* Embedded systems may want the simulated signals if no other form exists,
|
|
but UNIX versions will want to use the host facilities.
|
|
Define SIMULATED_SIGNALS when you want to use the simulated versions.
|
|
*/
|
|
|
|
/*
|
|
FUNCTION
|
|
<<raise>>---send a signal
|
|
|
|
INDEX
|
|
raise
|
|
INDEX
|
|
_raise_r
|
|
|
|
ANSI_SYNOPSIS
|
|
#include <signal.h>
|
|
int raise(int <[sig]>);
|
|
|
|
int _raise_r(void *<[reent]>, int <[sig]>);
|
|
|
|
TRAD_SYNOPSIS
|
|
#include <signal.h>
|
|
int raise(<[sig]>)
|
|
int <[sig]>;
|
|
|
|
int _raise_r(<[reent]>, <[sig]>)
|
|
char *<[reent]>;
|
|
int <[sig]>;
|
|
|
|
DESCRIPTION
|
|
Send the signal <[sig]> (one of the macros from `<<sys/signal.h>>').
|
|
This interrupts your program's normal flow of execution, and allows a signal
|
|
handler (if you've defined one, using <<signal>>) to take control.
|
|
|
|
The alternate function <<_raise_r>> is a reentrant version. The extra
|
|
argument <[reent]> is a pointer to a reentrancy structure.
|
|
|
|
RETURNS
|
|
The result is <<0>> if <[sig]> was successfully raised, <<1>>
|
|
otherwise. However, the return value (since it depends on the normal
|
|
flow of execution) may not be visible, unless the signal handler for
|
|
<[sig]> terminates with a <<return>> or unless <<SIG_IGN>> is in
|
|
effect for this signal.
|
|
|
|
PORTABILITY
|
|
ANSI C requires <<raise>>, but allows the full set of signal numbers
|
|
to vary from one implementation to another.
|
|
|
|
Required OS subroutines: <<getpid>>, <<kill>>.
|
|
*/
|
|
|
|
#ifndef SIGNAL_PROVIDED
|
|
|
|
int _dummy_raise;
|
|
|
|
#else
|
|
|
|
#include <reent.h>
|
|
#include <signal.h>
|
|
|
|
#ifndef _REENT_ONLY
|
|
|
|
int
|
|
_DEFUN (raise, (sig),
|
|
int sig)
|
|
{
|
|
return _raise_r (_REENT, sig);
|
|
}
|
|
|
|
#endif
|
|
|
|
int
|
|
_DEFUN (_raise_r, (reent, sig),
|
|
struct _reent *reent _AND
|
|
int sig)
|
|
{
|
|
return _kill_r (reent, _getpid_r (reent), sig);
|
|
}
|
|
|
|
#endif /* SIGNAL_PROVIDED */
|