Signal Queue API.

Signal Queue API. More...

Collaboration diagram for Signal Queue API.:

Macros
#define	RPMSQ_DFL   ((rpmsqAction_t)0)
	SIG_DFL, SIG_IGN and SIG_ERR counterparts. More...

Typedefs
typedef void(*	rpmsqAction_t) (int signum, siginfo_t *info, void *context)

Functions
RPM_GNUC_DEPRECATED int	rpmsqIsCaught (int signum)
RPM_GNUC_DEPRECATED int	rpmsqActivate (int state)
	Activate (or disable) the signal queue. More...
RPM_GNUC_DEPRECATED rpmsqAction_t	rpmsqSetAction (int signum, rpmsqAction_t handler)
int	rpmsqBlock (int op)
	Block or unblock (almost) all signals. More...
RPM_GNUC_DEPRECATED int	rpmsqPoll (void)
RPM_GNUC_DEPRECATED void	rpmsqSetInterruptSafety (int on)

Detailed Description

Signal Queue API.

Macro Definition Documentation

RPMSQ_DFL

#define RPMSQ_DFL   ((rpmsqAction_t)0)

SIG_DFL, SIG_IGN and SIG_ERR counterparts.

Definition at line 29 of file rpmsq.h.

Typedef Documentation

rpmsqAction_t

typedef void(* rpmsqAction_t) (int signum, siginfo_t *info, void *context)

Deprecated:

Obsolete, do not use.

Default signal handler prototype.

Parameters

signum	signal number
info	(siginfo_t) signal info
context	signal context

Definition at line 24 of file rpmsq.h.

Function Documentation

rpmsqActivate()

RPM_GNUC_DEPRECATED int rpmsqActivate

(

int

state

)

Activate (or disable) the signal queue.

Parameters

state

1 to enable, 0 to disable

Returns

0 on success, negative on error

rpmsqBlock()

int rpmsqBlock

(

int

op

)

Block or unblock (almost) all signals.

The operation is "reference counted" so the calls can be nested, and signals are only unblocked when the reference count falls to zero.

Parameters

op	SIG_BLOCK/SIG_UNBLOCK

Returns

0 on success, -1 on error

rpmsqIsCaught()

RPM_GNUC_DEPRECATED int rpmsqIsCaught

(

int

signum

)

Deprecated:

Obsolete, do not use.

Test if given signal has been caught (while signals blocked). Similar to sigismember() but operates on internal signal queue.

Parameters

signum

signal to test for

Returns

1 if caught, 0 if not and -1 on error

rpmsqPoll()

RPM_GNUC_DEPRECATED int rpmsqPoll

(

void

)

Deprecated:

Obsolete, do not use.

Poll for caught signals, executing their handlers.

Returns

no. active signals found

rpmsqSetAction()

RPM_GNUC_DEPRECATED rpmsqAction_t rpmsqSetAction	(	int	signum,
		rpmsqAction_t	handler
	)

Deprecated:

Obsolete, do not use.

Set or delete a signal handler for a signal.

Parameters

signum	signal number
handler	signal handler or NULL to delete

Returns

previous handler, RPMSQ_ERR on error

rpmsqSetInterruptSafety()

RPM_GNUC_DEPRECATED void rpmsqSetInterruptSafety

(

int

on

)

Deprecated:

Obsolete, do not use.