signal.h

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#ifndef KERN_SIGNAL_H
#define KERN_SIGNAL_H

#include <cfg/compiler.h>
#include <cfg/macros.h>    // BV()

#include <cpu/irq.h>

#include <kern/proc.h>

#if CONFIG_KERN_SIGNALS

INLINE sigmask_t __sig_checkSignal(Signal *s, sigmask_t sigs)
{
    sigmask_t result;

    result = s->recv & sigs;
    s->recv &= ~sigs;

    return result;
}

INLINE sigmask_t sig_checkSignal(Signal *s, sigmask_t sigs)
{
    cpu_flags_t flags;
    sigmask_t result;

    IRQ_SAVE_DISABLE(flags);
    result = __sig_checkSignal(s, sigs);
    IRQ_RESTORE(flags);

    return result;
}

INLINE sigmask_t sig_check(sigmask_t sigs)
{
    Process *proc = proc_current();
    return sig_checkSignal(&proc->sig, sigs);
}

void sig_sendSignal(Signal *s, Process *proc, sigmask_t sig);

INLINE void sig_send(Process *proc, sigmask_t sig)
{
    sig_sendSignal(&proc->sig, proc, sig);
}

void sig_postSignal(Signal *s, Process *proc, sigmask_t sig);

INLINE void sig_post(Process *proc, sigmask_t sig)
{
    sig_postSignal(&proc->sig, proc, sig);
}

/*
 * XXX: this is provided for backword compatibility, consider to make this
 * deprecated for the future.
 */
INLINE void sig_signal(Process *proc, sigmask_t sig)
{
    sig_postSignal(&proc->sig, proc, sig);
}

sigmask_t sig_waitSignal(Signal *s, sigmask_t sigs);

INLINE sigmask_t sig_wait(sigmask_t sigs)
{
    Process *proc = proc_current();
    return sig_waitSignal(&proc->sig, sigs);
}

sigmask_t sig_waitTimeoutSignal(Signal *s, sigmask_t sigs, ticks_t timeout,
                Hook func, iptr_t data);

INLINE sigmask_t sig_waitTimeout(sigmask_t sigs, ticks_t timeout)
{
    Process *proc = proc_current();
    return sig_waitTimeoutSignal(&proc->sig, sigs, timeout,
            NULL, NULL);
}

#endif /* CONFIG_KERN_SIGNALS */

int signal_testRun(void);
int signal_testSetup(void);
int signal_testTearDown(void);

#define SIG_USER0    BV(0)  
#define SIG_USER1    BV(1)  
#define SIG_USER2    BV(2)  
#define SIG_USER3    BV(3)  
#define SIG_SINGLE   BV(4)  
#define SIG_SYSTEM5  BV(5)  
#define SIG_SYSTEM6  BV(6)  
#define SIG_TIMEOUT  BV(7)  
#define SIG_USER_MAX SIG_SINGLE
/*\}*/

/* \} */ //defgroup kern_signal

#endif /* KERN_SIGNAL_H */