00001
00048 #ifndef KERN_SIGNAL_H
00049 #define KERN_SIGNAL_H
00050 
00051 #include <cfg/compiler.h>
00052 #include <cfg/macros.h>    // BV()
00053
00054 #include <cpu/irq.h>
00055
00056 #include <kern/proc.h>
00057
00058 #if CONFIG_KERN_SIGNALS
00059 
00060 INLINE sigmask_t __sig_checkSignal(Signal *s, sigmask_t sigs)
00061 {
00062     sigmask_t result;
00063
00064     result = s->recv & sigs;
00065     s->recv &= ~sigs;
00066
00067     return result;
00068 }
00069
00075 INLINE sigmask_t sig_checkSignal(Signal *s, sigmask_t sigs)
00076 {
00077     cpu_flags_t flags;
00078     sigmask_t result;
00079
00080     IRQ_SAVE_DISABLE(flags);
00081     result = __sig_checkSignal(s, sigs);
00082     IRQ_RESTORE(flags);
00083
00084     return result;
00085 }
00086
00092 INLINE sigmask_t sig_check(sigmask_t sigs)
00093 {
00094     Process *proc = proc_current();
00095     return sig_checkSignal(&proc->sig, sigs);
00096 }
00097
00098 void sig_sendSignal(Signal *s, Process *proc, sigmask_t sig);
00099
00110 INLINE void sig_send(Process *proc, sigmask_t sig)
00111 {
00112     sig_sendSignal(&proc->sig, proc, sig);
00113 }
00114
00115 void sig_postSignal(Signal *s, Process *proc, sigmask_t sig);
00116
00123 INLINE void sig_post(Process *proc, sigmask_t sig)
00124 {
00125     sig_postSignal(&proc->sig, proc, sig);
00126 }
00127
00128 /*
00129  * XXX: this is provided for backword compatibility, consider to make this
00130  * deprecated for the future.
00131  */
00132 INLINE void sig_signal(Process *proc, sigmask_t sig)
00133 {
00134     sig_postSignal(&proc->sig, proc, sig);
00135 }
00136
00137 sigmask_t sig_waitSignal(Signal *s, sigmask_t sigs);
00138
00144 INLINE sigmask_t sig_wait(sigmask_t sigs)
00145 {
00146     Process *proc = proc_current();
00147     return sig_waitSignal(&proc->sig, sigs);
00148 }
00149
00150 sigmask_t sig_waitTimeoutSignal(Signal *s, sigmask_t sigs, ticks_t timeout,
00151                 Hook func, iptr_t data);
00152
00159 INLINE sigmask_t sig_waitTimeout(sigmask_t sigs, ticks_t timeout)
00160 {
00161     Process *proc = proc_current();
00162     return sig_waitTimeoutSignal(&proc->sig, sigs, timeout,
00163             NULL, NULL);
00164 }
00165
00166 #endif /* CONFIG_KERN_SIGNALS */
00167
00168 int signal_testRun(void);
00169 int signal_testSetup(void);
00170 int signal_testTearDown(void);
00171
00176 #define SIG_USER0    BV(0)  
00177 #define SIG_USER1    BV(1)  
00178 #define SIG_USER2    BV(2)  
00179 #define SIG_USER3    BV(3)  
00180 #define SIG_SINGLE   BV(4)  
00181 #define SIG_SYSTEM5  BV(5)  
00182 #define SIG_SYSTEM6  BV(6)  
00183 #define SIG_TIMEOUT  BV(7)  
00188 #define SIG_USER_MAX SIG_SINGLE
00189 /*\}*/
00190
00191 /* \} */ //defgroup kern_signal
00192
00193 #endif /* KERN_SIGNAL_H */