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signal.ch

Declarations

Public Only
Publicfunction signal
func signal(sig : int, handler : func(int) : void) : int
Sets the error handler for signal sig. The signal handler can be set so that default handling will occur, signal is ignored, or a user-defined function is called. When signal handler is set to a function and a signal occurs, it is implementation defined whether signal(sig, SIG_DFL) will be executed immediately before the start of signal handler. Also, the implementation can prevent some implementation-defined set of signals from occurring while the signal handler runs. SIGABRT SIGFPE SIGILL defines signal types SIGINT SIGSEGV SIGTERM SIG_DFL macro. The signal handler is set to default signal handler. SIG_IGN macro. The signal is ignored. pointer to a function. The signature of the function must be equivalent to the following: void fun(int sig);

Parameters

  • sig - the signal to set the signal handler to. It can be an implementation-defined value or one of the following values: SIGABRT SIGFPE SIGILL defines signal types SIGINT SIGSEGV SIGTERM @param handler - the signal handler. This must be one of the following: SIG_DFL macro. The signal handler is set to default signal handler. SIG_IGN macro. The signal is ignored. pointer to a function. The signature of the function must be equivalent to the following: void fun(int sig); @return Previous signal handler on success or SIG_ERR on failure (setting a signal handler can be disabled on some implementations). @see https:en.cppreference.com/w/c/program/signal
  • handler - the signal handler. This must be one of the following: SIG_DFL macro. The signal handler is set to default signal handler. SIG_IGN macro. The signal is ignored. pointer to a function. The signature of the function must be equivalent to the following: void fun(int sig); @return Previous signal handler on success or SIG_ERR on failure (setting a signal handler can be disabled on some implementations). @see https:en.cppreference.com/w/c/program/signal

Returns

Previous signal handler on success or SIG_ERR on failure (setting a signal handler can be disabled on some implementations). @see https:en.cppreference.com/w/c/program/signal

See Also

  • https:en.cppreference.com/w/c/program/signal
Publicfunction raise
func raise(sig : int) : int
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.

Returns

0 upon success, non-zero value on failure. @see https:en.cppreference.com/w/c/program/raise

See Also

  • https:en.cppreference.com/w/c/program/raise
Publictypealias sig_atomic_t
type sig_atomic_t = int
TODO using int as sig_atomic_t as implementation is unknown An integer type which can be accessed as an atomic entity even in the presence of asynchronous interrupts made by signals.

See Also

  • https:en.cppreference.com/w/c/program/sig_atomic_t