/*
* $Log$
+ * Revision 1.4 2004/07/30 14:30:27 rasky
+ * Resa la sig_signal interrupt safe (con il nuovo scheduler IRQ-safe)
+ * Rimossa event_doIntr (ora inutile) e semplificata la logica delle macro con funzioni inline
+ *
+ * Revision 1.3 2004/07/30 14:24:16 rasky
+ * Task switching con salvataggio perfetto stato di interrupt (SR)
+ * Kernel monitor per dump informazioni su stack dei processi
+ *
* Revision 1.2 2004/06/03 11:27:09 bernie
* Add dual-license information.
*
sigset_t sig_check(sigset_t sigs)
{
sigset_t result;
+ cpuflags_t flags;
- DISABLE_INTS;
+ DISABLE_IRQSAVE(flags);
result = CurrentProcess->sig_recv & sigs;
CurrentProcess->sig_recv &= ~sigs;
- ENABLE_INTS;
+ ENABLE_IRQRESTORE(flags);
return result;
}
sigset_t sig_wait(sigset_t sigs)
{
sigset_t result;
+ cpuflags_t flags;
- DISABLE_INTS;
+ DISABLE_IRQSAVE(flags);
- for(;;)
+ /* Loop until we get at least one of the signals */
+ while (!(result = CurrentProcess->sig_recv & sigs))
{
- /* Check if we got at least one of the signals */
- if ((result = CurrentProcess->sig_recv & sigs))
- {
- /* Yes, clear signals and return */
- CurrentProcess->sig_recv &= ~sigs;
- ENABLE_INTS;
- return result;
- }
-
- /* No, go to sleep and proc_schedule() another process */
+ /* go to sleep and proc_schedule() another process */
CurrentProcess->sig_wait = sigs;
proc_schedule();
}
+
+ /* Signals found: clear them and return */
+ CurrentProcess->sig_recv &= ~sigs;
+ ENABLE_IRQRESTORE(flags);
+ return result;
}
* Send the signals \a sigs to the process \a proc.
* The process will be awaken if it was waiting for any of them.
*
- * This call is interrupt safe (no \c DISABLE_INTS/ENABLE_INTS protection)
- */
-void _sig_signal(Process *proc, sigset_t sigs)
-{
- /* Set the signals */
- proc->sig_recv |= sigs;
-
- /* Check if process needs to be awaken */
- if (proc->sig_recv & proc->sig_wait)
- {
- /* Wake up process and enqueue in ready list */
- proc->sig_wait = 0;
- SCHED_ENQUEUE(proc);
- }
-}
-
-
-/*!
- * Same as _sig_signal() with interrupt protection.
- *
- * \note Inlined manually because some compilers are too
- * stupid to it automatically.
+ * \note This call is interrupt safe.
*/
void sig_signal(Process *proc, sigset_t sigs)
{
- DISABLE_INTS;
+ cpuflags_t flags;
+ DISABLE_IRQSAVE(flags);
/* Set the signals */
proc->sig_recv |= sigs;
SCHED_ENQUEUE(proc);
}
- ENABLE_INTS;
+ ENABLE_IRQRESTORE(flags);
}
#endif /* CONFIG_KERN_SIGNALS */