Signals

Description

Kernel implementation of signal propagation mechanism.

Functions
int	os_signal (int signo, void(*sighandler)(int))
	Kernel implementation of signal syscall.
int	os_kill (uint8_t thread_id, uint8_t signal_id)
	Kernel implementation of kill syscall.
enum	Signals { SIGALARM }
void	os_deliver_signal (struct OS_thread_t *thread, uint32_t signals)
	Internal implementation of signal delivery into thread context.

Enumeration Type Documentation

Signals

enum Signals

Enumerator
SIGALARM

Function Documentation

os_deliver_signal()

void os_deliver_signal	(	struct OS_thread_t *	thread,
		uint32_t	signals
	)

Internal implementation of signal delivery into thread context.

As this routine is only designed to be called from pend_sv handler, it has strict requirements on state of thread. It must be in state just before being resumed.

Parameters

thread	thread which gets signal handler injected
signals	mask of signals being delivered

os_kill()

int os_kill	(	uint8_t	thread_id,
		uint8_t	signal_id
	)

Kernel implementation of kill syscall.

os_signal()

int os_signal	(	int	signo,
		void(*)(int)	sighandler
	)

Kernel implementation of signal syscall.