xnu-517.tar.gz

[apple/xnu.git] / bsd / sys / signal.h

diff --git a/bsd/sys/signal.h b/bsd/sys/signal.h
index c2af5f2d7f5056c0aea573a3d7656c1795d8d4bf..92e3f7ffe193fa07f145b43bf189333b6d1a4190 100644 (file)
--- a/bsd/sys/signal.h
+++ b/bsd/sys/signal.h
@@ -144,12 +144,20 @@ union sigval {
        void    *sigval_ptr;
 };
 
-#define        SIGEV_NONE      0               /* No async notification */
+#define        SIGEV_NONE              0               /* No async notification */
+#define        SIGEV_SIGNAL    1               /* aio - completion notification */
 #ifdef __APPLE_API_PRIVATE
-#define        SIGEV_SIGNAL    1               /* Generate a queued signal */
-#define SIGEV_THREAD   3               /* A notification function will be called to perfrom notification */
+#define SIGEV_THREAD   3               /* A notification function will be called to perform notification */
 #endif /*__APPLE_API_PRIVATE */
 
+struct sigevent {
+       int                             sigev_notify;                           /* Notification type */
+       int                             sigev_signo;                            /* Signal number */
+       union sigval    sigev_value;                            /* Signal value */
+       void                    (*sigev_notify_function)(union sigval);   /* Notification function */
+       pthread_attr_t  *sigev_notify_attributes;       /* Notification attributes */
+};
+
 typedef struct __siginfo {
        int     si_signo;               /* signal number */
        int     si_errno;               /* errno association */
@@ -282,8 +290,8 @@ typedef struct  sigaltstack stack_t;
 
 #define SS_ONSTACK     0x0001  /* take signal on signal stack */
 #define        SS_DISABLE      0x0004  /* disable taking signals on alternate stack */
-#define        MINSIGSTKSZ     8192                    /* minimum allowable stack */
-#define        SIGSTKSZ        (MINSIGSTKSZ + 32768)   /* recommended stack size */
+#define        MINSIGSTKSZ     32768   /* (32K)minimum allowable stack */
+#define        SIGSTKSZ        131072  /* (128K)recommended stack size */
 
 /*
  * 4.3 compatibility: