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#ifndef H_RPMSQ
#define H_RPMSQ
/** \ingroup rpmio
* \file rpmio/rpmsq.h
*
* Signal Queue API
*/
#include <rpm/rpmsw.h>
#include <signal.h>
#ifdef __cplusplus
extern "C" {
#endif
/** \ingroup rpmsq
* Default signal handler prototype.
* @param signum signal number
* @param info (siginfo_t) signal info
* @param context signal context
*/
typedef void (*rpmsqAction_t) (int signum, siginfo_t * info, void * context);
/** \ingroup rpmsq
* Test if given signal has been caught (while signals blocked).
* Similar to sigismember() but operates on internal signal queue.
* @param signum signal to test for
* @return 1 if caught, 0 if not and -1 on error
*/
int rpmsqIsCaught(int signum);
/** \ingroup rpmsq
* Default signal handler.
* @param signum signal number
* @param info (siginfo_t) signal info
* @param context signal context
*/
void rpmsqAction(int signum, siginfo_t * info, void * context);
/** \ingroup rpmsq
* Enable or disable a signal handler.
* @param signum signal to enable (or disable if negative)
* @param handler sa_sigaction handler (or NULL to use rpmsqHandler())
* @return no. of refs, -1 on error
*/
int rpmsqEnable(int signum, rpmsqAction_t handler);
void rpmsqSetInterruptSafety(int on);
#ifdef __cplusplus
}
#endif
#endif /* H_RPMSQ */
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