-/* $Id: signal.h,v 1.2 2002/02/20 09:17:54 hyperion Exp $
+/* $Id: signal.h,v 1.3 2002/03/22 01:26:28 hyperion Exp $
*/
/*
* signal.h
typedef int sig_atomic_t; /* Integral type of an object that can be
accessed as an atomic entity, even in the
- presence of asynchronous interrupts */ /* FIXME? */
+ presence of asynchronous interrupts */
-typedef struct __tagsigset_t
-{
- int _dummy;
-} sigset_t; /* Integral or structure type of an object used to represent
- sets of signals. */ /* TODO */
+typedef unsigned long int sigset_t; /* Integral or structure type of an object
+ used to represent sets of signals. */
union sigval
{
{
void (* sa_handler)(int); /* what to do on receipt of signal */
sigset_t sa_mask; /* set of signals to be blocked during
- execution of the signal handling
- function */
+ execution of the signal handling function */
int sa_flags; /* special flags */
void (* sa_sigaction)(int, siginfo_t *, void *);
/* pointer to signal handler function
};
/* CONSTANTS */
-/* Request for default signal handling. */
-#define SIG_DFL ((void (*)(int))(0))
-/* Return value from signal() in case of error. */
-#define SIG_ERR ((void (*)(int))(1))
-/* Request that signal be held. */
-#define SIG_HOLD ((void (*)(int))(2))
-/* Request that signal be ignored. */
-#define SIG_IGN ((void (*)(int))(3))
-
-/* No asynchronous notification will be delivered when the event of
- interest occurs. */
-#define SIGEV_NONE (0)
-/* A queued signal, with an application-defined value, will be generated
- when the event of interest occurs. */
-#define SIGEV_SIGNAL (1)
-/* A notification function will be called to perform notification. */
-#define SIGEV_THREAD (2)
+#define SIG_DFL ((void (*)(int))(0xFFFFFFFF)) /* Request for default signal handling. */
+#define SIG_ERR ((void (*)(int))(0x00000000)) /* Return value from signal() in case of error. */
+#define SIG_IGN ((void (*)(int))(0x00000001)) /* Request that signal be ignored. */
+#define SIG_HOLD ((void (*)(int))(0x00000002)) /* Request that signal be held. */
+
+#define SIGEV_NONE (0) /* No asynchronous notification will be delivered \
+ when the event of interest occurs. */
+#define SIGEV_SIGNAL (1) /* A queued signal, with an application-defined \
+ value, will be generated when the event of \
+ interest occurs. */
+#define SIGEV_THREAD (2) /* A notification function will be called to perform \
+ notification. */
/* TODO: realtime features not supported yet */
#define SIGRTMIN (-1)
#define SIGRTMAX (-1)
-/* Process abort signal. */
-#define SIGABRT ( 1)
-/* Alarm clock. */
-#define SIGALRM ( 2)
-/* Erroneous arithmetic operation. */
-#define SIGFPE ( 3)
-/* Hangup. */
-#define SIGHUP ( 4)
-/* Illegal instruction. */
-#define SIGILL ( 5)
-/* Terminal interrupt signal. */
-#define SIGINT ( 6)
-/* Kill (cannot be caught or ignored). */
-#define SIGKILL ( 7)
-/* Write on a pipe with no one to read it. */
-#define SIGPIPE ( 8)
-/* Terminal quit signal. */
-#define SIGQUIT ( 9)
-/* Invalid memory reference. */
-#define SIGSEGV (10)
-/* Termination signal. */
-#define SIGTERM (11)
-/* User-defined signal 1. */
-#define SIGUSR1 (12)
-/* User-defined signal 2. */
-#define SIGUSR2 (13)
-/* Child process terminated or stopped. */
-#define SIGCHLD (14)
-/* Continue executing, if stopped. */
-#define SIGCONT (15)
-/* Stop executing (cannot be caught or ignored). */
-#define SIGSTOP (16)
-/* Terminal stop signal. */
-#define SIGTSTP (17)
-/* Background process attempting read. */
-#define SIGTTIN (18)
-/* Background process attempting write. */
-#define SIGTTOU (19)
-/* Access to an undefined portion of a memory object. */
-#define SIGBUS (20)
-/* Pollable event. */
-#define SIGPOLL (21)
-/* Profiling timer expired. */
-#define SIGPROF (22)
-/* Bad system call. */
-#define SIGSYS (23)
-/* Trace/breakpoint trap. */
-#define SIGTRAP (24)
-/* High bandwidth data is available at a socket. */
-#define SIGURG (25)
-/* Virtual timer expired. */
-#define SIGVTALRM (26)
-/* CPU time limit exceeded. */
-#define SIGXCPU (27)
-/* File size limit exceeded. */
-#define SIGXFSZ (28)
+#define SIGABRT ( 1) /* Process abort signal. */
+#define SIGALRM ( 2) /* Alarm clock. */
+#define SIGFPE ( 3) /* Erroneous arithmetic operation. */
+#define SIGHUP ( 4) /* Hangup. */
+#define SIGILL ( 5) /* Illegal instruction. */
+#define SIGINT ( 6) /* Terminal interrupt signal. */
+#define SIGKILL ( 7) /* Kill (cannot be caught or ignored). */
+#define SIGPIPE ( 8) /* Write on a pipe with no one to read it. */
+#define SIGQUIT ( 9) /* Terminal quit signal. */
+#define SIGSEGV (10) /* Invalid memory reference. */
+#define SIGTERM (11) /* Termination signal. */
+#define SIGUSR1 (12) /* User-defined signal 1. */
+#define SIGUSR2 (13) /* User-defined signal 2. */
+#define SIGCHLD (14) /* Child process terminated or stopped. */
+#define SIGCONT (15) /* Continue executing, if stopped. */
+#define SIGSTOP (16) /* Stop executing (cannot be caught or ignored). */
+#define SIGTSTP (17) /* Terminal stop signal. */
+#define SIGTTIN (18) /* Background process attempting read. */
+#define SIGTTOU (19) /* Background process attempting write. */
+#define SIGBUS (20) /* Access to an undefined portion of a memory object. */
+#define SIGPOLL (21) /* Pollable event. */
+#define SIGPROF (22) /* Profiling timer expired. */
+#define SIGSYS (23) /* Bad system call. */
+#define SIGTRAP (24) /* Trace/breakpoint trap. */
+#define SIGURG (25) /* High bandwidth data is available at a socket. */
+#define SIGVTALRM (26) /* Virtual timer expired. */
+#define SIGXCPU (27) /* CPU time limit exceeded. */
+#define SIGXFSZ (28) /* File size limit exceeded. */
/* FIXME: the following constants need to be reviewed */
/* Do not generate SIGCHLD when children stop. */
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