Name
SPVM::Sys::Signal - Signals
Description
Sys::Signal class in SPVM has methods to manipulate signals.
Usage
use Sys::Signal;
use Sys::Signal::Constant as SIGNAL;
Sys::Signal->kill($process_id, SIGNAL->SIGINT);
Sys::Signal->signal(SIGNAL->SIGTERM, Sys::Signal->SIG_IGN);Class Methods
raise
static method raise : int ($sig : int)
Calls the raise function and returns its return value.
See Sys::Signal::Constant about constant values given to $sig.
Exceptions:
If the raise function failed, an exception is thrown with eval_error_id set to the basic type ID of the Error::System class.
kill
static method kill : int ($pid : int, $sig : int)
Calls the kill function and returns its return value.
See Sys::Signal::Constant about constant values given to $sig.
Exceptions:
If the kill function failed, an exception is thrown with eval_error_id set to the basic type ID of the Error::System class.
In Windows the following excetpion is thrown. kill is not supported in this system(defined(_WIN32)).
alarm
static method alarm : int ($seconds : int)
Calls the alarm function and returns its return value.
Exceptions:
If the alarm function failed, an exception is thrown with eval_error_id set to the basic type ID of the Error::System class.
In Windows the following excetpion is thrown. alarm is not supported in this system(defined(_WIN32)).
ualarm
static method ualarm : int ($usecs : int, $interval : int)
Calls the ualarm function and returns its return value.
Exceptions:
In Windows the following excetpion is thrown. ualarm is not supported in this system(defined(_WIN32)).
signal
static method signal : Sys::Signal::Handler ($signum : int, $handler : Sys::Signal::Handler);
Calls signal function and creates a signal handler object with its pointer set to the function's return value, and returns it.
$handler can be "SIG_DFL" and "SIG_IGN".
See Sys::Signal::Constant about constant values given to $sig.
Exceptions:
$handler must be defined. Otherwise an exception is thrown.
If the signal function failed, an exception is thrown with eval_error_id set to the basic type ID of the Error::System class.
SIG_DFL
static method SIG_DFL : Sys::Signal::Handler ();
Creates a new signal handler that represents SIG_DFL.
SIG_IGN
static method SIG_IGN : Sys::Signal::Handler ();
Creates a new signal handler that represents SIG_IGN.
SIG_GO
static method SIG_GO : Sys::Signal::Handler ();
Creates a new signal handler that represents the signal handler for Go::OS::Signal.
Do not use this signal handler because this signal handler is prepared to implement the Go::OS::Signal class.
SET_SIG_GO_WRITE_FD
static method SET_SIG_GO_WRITE_FD : void ($fd : int);
Set a write file descriptor for Go::OS::Signal.
Do not use this method because this method is prepared to implement the Go::OS::Signal class.
See Also
Copyright & License
Copyright (c) 2023 Yuki Kimoto
MIT License