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#ifndef LITMUS_SIGNAL_H
#define LITMUS_SIGNAL_H
#ifdef __KERNEL__
#include <linux/signal.h>
#else
#include <signal.h>
#endif
/* Signals used by Litmus to asynchronously communicate events
* to real-time tasks.
*
* Signal values overlap with [SIGRTMIN, SIGRTMAX], so beware of
* application-level conflicts when dealing with COTS user-level
* code.
*/
/* Sent to a Litmus task when all of the following conditions are true:
* (1) The task has exhausted its budget.
* (2) budget_signal_policy is QUANTUM_SIGNALS or PRECISE_SIGNALS.
*
* Note: If a task does not have a registered handler for SIG_BUDGET,
* the signal will cause the task to terminate (default action).
*/
/* Assigned values start at SIGRTMAX and decrease, hopefully reducing
* likelihood of user-level conflicts.
*/
#define SIG_BUDGET (SIGRTMAX - 0)
/*
Future signals could include:
#define SIG_DEADLINE_MISS (SIGRTMAX - 1)
#define SIG_CRIT_LEVEL_CHANGE (SIGRTMAX - 2)
*/
#define SIGLITMUSMIN SIG_BUDGET
#ifdef __KERNEL__
#if (SIGLITMUSMIN < SIGRTMIN)
/* no compile-time check in user-space since SIGRTMIN may be a variable. */
#error "Too many LITMUS^RT signals!"
#endif
#endif
#endif
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