sync with previous changes

9 files changed, 139 insertions, 59 deletions

diff --git a/lib/libc_r/TEST/Makefile b/lib/libc_r/TEST/Makefile
index 9b95619ccdf..f1f07e5fac0 100644
--- a/lib/libc_r/TEST/Makefile
+++ b/lib/libc_r/TEST/Makefile
@@ -23,7 +23,7 @@ TESTS = test_create test_pthread_join test_switch test_sleep test_readdir \
 	test_fork test_execve test_preemption \
 	test_sock_1 test_sock_2 test_stdio_1 test_pthread_mutex \
 	test_pthread_cond_timedwait test_netdb test_pw test_cwd \
-	test_sock_2a
+	test_sock_2a test_cancel
 
 SRCS =		${TESTS:=.c}
 CLEANFILES +=	${TESTS} 
diff --git a/lib/libc_r/include/pthread.h b/lib/libc_r/include/pthread.h
index 3215c445a40..0c935fabc97 100644
--- a/lib/libc_r/include/pthread.h
+++ b/lib/libc_r/include/pthread.h
@@ -30,7 +30,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
  * SUCH DAMAGE.
  *
- * $OpenBSD: pthread.h,v 1.4 1998/12/21 07:30:25 d Exp $
+ * $OpenBSD: pthread.h,v 1.5 1999/01/18 00:00:31 d Exp $
  *
  */
 #ifndef _PTHREAD_H_
@@ -91,6 +91,15 @@
 #define PTHREAD_PROCESS_SHARED      1	
 
 /*
+ * Flags for cancelling threads
+ */
+#define PTHREAD_CANCEL_ENABLE		0
+#define PTHREAD_CANCEL_DISABLE		1
+#define PTHREAD_CANCEL_DEFERRED		0
+#define PTHREAD_CANCEL_ASYNCHRONOUS	1
+#define PTHREAD_CANCELED		((void *) 1)
+
+/*
  * Forward structure definitions.
  *
  * These are mostly opaque to the user.
@@ -174,24 +183,26 @@ enum pthread_mutextype {
  * Thread function prototype definitions:
  */
 __BEGIN_DECLS
+int		pthread_atfork(void (*)(void), void (*)(void), void (*)(void));
 int		pthread_attr_destroy __P((pthread_attr_t *));
-int		pthread_attr_getinheritsched __P((pthread_attr_t *, int *));
-int		pthread_attr_getschedparam __P((pthread_attr_t *,
+int		pthread_attr_getinheritsched __P((const pthread_attr_t *, int *));
+int		pthread_attr_getschedparam __P((const pthread_attr_t *,
 			struct sched_param *));
-int		pthread_attr_getschedpolicy __P((pthread_attr_t *, int *));
-int		pthread_attr_getscope __P((pthread_attr_t *, int *));
+int		pthread_attr_getschedpolicy __P((const pthread_attr_t *, int *));
+int		pthread_attr_getscope __P((const pthread_attr_t *, int *));
 int		pthread_attr_getstacksize __P((pthread_attr_t *, size_t *));
 int		pthread_attr_getstackaddr __P((pthread_attr_t *, void **));
 int		pthread_attr_getdetachstate __P((pthread_attr_t *, int *));
 int		pthread_attr_init __P((pthread_attr_t *));
 int		pthread_attr_setinheritsched __P((pthread_attr_t *, int));
 int		pthread_attr_setschedparam __P((pthread_attr_t *,
-			struct sched_param *));
+			const struct sched_param *));
 int		pthread_attr_setschedpolicy __P((pthread_attr_t *, int));
 int		pthread_attr_setscope __P((pthread_attr_t *, int));
 int		pthread_attr_setstacksize __P((pthread_attr_t *, size_t));
 int		pthread_attr_setstackaddr __P((pthread_attr_t *, void *));
 int		pthread_attr_setdetachstate __P((pthread_attr_t *, int));
+int		pthread_cancel __P((pthread_t));
 void		pthread_cleanup_pop __P((int execute));
 void		pthread_cleanup_push __P((void (*routine) (void *),
 			void *routine_arg));
@@ -264,14 +275,14 @@ int		pthread_setcancelstate __P((int, int *));
 int		pthread_setcanceltype __P((int, int *));
 int		pthread_setspecific __P((pthread_key_t, const void *));
 int		pthread_sigmask __P((int, const sigset_t *, sigset_t *));
-int		pthread_testcancel __P((void));
+void		pthread_testcancel __P((void));
 
 
 int		pthread_getprio __P((pthread_t));
 int		pthread_setprio __P((pthread_t, int));
 void		pthread_yield __P((void));
 int		pthread_setschedparam __P((pthread_t pthread, int policy,
-			struct sched_param * param));
+			const struct sched_param * param));
 int		pthread_getschedparam __P((pthread_t pthread, int *policy,
 			struct sched_param * param));
 int		pthread_attr_setfloatstate __P((pthread_attr_t *, int));
@@ -284,11 +295,7 @@ int		pthread_attr_setcleanup __P((pthread_attr_t *,
 /*
  * Single Unix Specification v2 (UNIX98) also wants these:
  */
-#define PTHREAD_CANCEL_ASYNCHRONOUS
-#define PTHREAD_CANCEL_ENABLE
-#define PTHREAD_CANCEL_DEFERRED
-#define PTHREAD_CANCEL_DISABLE
-#define PTHREAD_CANCELED
+
 #define PTHREAD_PRIO_INHERIT
 #define PTHREAD_PRIO_NONE
 #define PTHREAD_PRIO_PROTECT
diff --git a/lib/libc_r/man/Makefile.inc b/lib/libc_r/man/Makefile.inc
index f3ff1ba09a2..f637c4a88cf 100644
--- a/lib/libc_r/man/Makefile.inc
+++ b/lib/libc_r/man/Makefile.inc
@@ -1,11 +1,12 @@
-# $Id: Makefile.inc,v 1.3 1998/11/20 15:15:06 d Exp $
-# $OpenBSD: Makefile.inc,v 1.3 1998/11/20 15:15:06 d Exp $
+# $Id: Makefile.inc,v 1.4 1999/01/18 00:00:32 d Exp $
+# $OpenBSD: Makefile.inc,v 1.4 1999/01/18 00:00:32 d Exp $
 
 # POSIX thread man files
 
 .PATH: ${.CURDIR}/man
 
-MAN+=	pthread_cleanup_pop.3 \
+MAN+=	pthread_atfork.3 \
+	pthread_cleanup_pop.3 \
 	pthread_cleanup_push.3 \
 	pthread_cond_broadcast.3 \
 	pthread_cond_destroy.3 \
@@ -13,6 +14,7 @@ MAN+=	pthread_cleanup_pop.3 \
 	pthread_cond_signal.3 \
 	pthread_cond_timedwait.3 \
 	pthread_cond_wait.3 \
+	pthread_cancel.3 \
 	pthread_create.3 \
 	pthread_detach.3 \
 	pthread_equal.3 \
@@ -37,7 +39,8 @@ MAN+=	pthread_cleanup_pop.3 \
 	pthread_rwlockattr_init.3 \
 	pthread_rwlockattr_setpshared.3 \
 	pthread_self.3 \
-	pthread_setspecific.3
+	pthread_setspecific.3 \
+	pthread_testcancel.3
 
 MAN+=	pthreads.3 \
 	flockfile.3 \
@@ -46,5 +49,7 @@ MAN+=	pthreads.3 \
 MLINKS+=flockfile.3 funlockfile.3 \
 	flockfile.3 ftrylockfile.3 \
 	pthread_rwlock_rdlock.3 pthread_rwlock_tryrdlock.3 \
-	pthread_rwlock_wrlock.3 pthread_rwlock_trywrlock.3
+	pthread_rwlock_wrlock.3 pthread_rwlock_trywrlock.3 \
+	pthread_cancel.3 pthread_setcancelstate.3 \
+	pthread_cancel.3 pthread_getcancelstate.3 \
 	
diff --git a/lib/libc_r/uthread/Makefile.inc b/lib/libc_r/uthread/Makefile.inc
index bbaea92c049..e525110ebb3 100644
--- a/lib/libc_r/uthread/Makefile.inc
+++ b/lib/libc_r/uthread/Makefile.inc
@@ -1,5 +1,5 @@
-#	$Id: Makefile.inc,v 1.5 1999/01/08 05:42:18 d Exp $
-#	$OpenBSD: Makefile.inc,v 1.5 1999/01/08 05:42:18 d Exp $
+#	$Id: Makefile.inc,v 1.6 1999/01/18 00:00:32 d Exp $
+#	$OpenBSD: Makefile.inc,v 1.6 1999/01/18 00:00:32 d Exp $
 
 # uthread sources
 .PATH: ${.CURDIR}/uthread
@@ -8,17 +8,21 @@ CFLAGS += -I${.CURDIR}/arch/${MACHINE_ARCH}
 
 SRCS+= \
 	uthread_accept.c \
+	uthread_atfork.c \
 	uthread_attr_destroy.c \
 	uthread_attr_init.c \
 	uthread_attr_getdetachstate.c \
 	uthread_attr_getstackaddr.c \
 	uthread_attr_getstacksize.c \
+	uthread_attr_priosched.c \
 	uthread_attr_setcreatesuspend_np.c \
 	uthread_attr_setdetachstate.c \
 	uthread_attr_setstackaddr.c \
 	uthread_attr_setstacksize.c \
 	uthread_autoinit.c \
 	uthread_bind.c \
+	uthread_fchflags.c \
+	uthread_cancel.c \
 	uthread_clean.c \
 	uthread_close.c \
 	uthread_cond.c \
@@ -60,6 +64,7 @@ SRCS+= \
 	uthread_listen.c \
 	uthread_mattr_init.c \
 	uthread_mattr_kind_np.c \
+	uthread_msync.c \
 	uthread_multi_np.c \
 	uthread_mutex.c \
 	uthread_mutexattr_destroy.c \
diff --git a/lib/libc_r/uthread/pthread_private.h b/lib/libc_r/uthread/pthread_private.h
index 28cfcfa7ae7..ff318b3b611 100644
--- a/lib/libc_r/uthread/pthread_private.h
+++ b/lib/libc_r/uthread/pthread_private.h
@@ -31,7 +31,7 @@
  *
  * Private thread definitions for the uthread kernel.
  *
- * $OpenBSD: pthread_private.h,v 1.10 1999/01/10 22:32:23 d Exp $
+ * $OpenBSD: pthread_private.h,v 1.11 1999/01/18 00:00:32 d Exp $
  *
  */
 
@@ -50,7 +50,9 @@
 #include <sys/time.h>
 #include <sched.h>
 #include <spinlock.h>
+#ifndef _NO_UTHREAD_MACHDEP
 #include "uthread_machdep.h"
+#endif
 
 /*
  * Kernel fatal error handler macro.
@@ -197,6 +199,10 @@ struct pthread_attr {
 #define PTHREAD_MIN_PRIORITY			0
 #define _POSIX_THREAD_ATTR_STACKSIZE
 
+#define PTHREAD_ATFORK_PREPARE			0
+#define PTHREAD_ATFORK_PARENT			1
+#define PTHREAD_ATFORK_CHILD			2
+
 /*
  * Clock resolution in nanoseconds.
  */
@@ -349,12 +355,6 @@ struct pthread {
 	 */
 	struct  sigcontext saved_sigcontext;
 
-	/* 
-	 * Saved jump buffer used in call to longjmp by _thread_kern_sched
-	 * if sig_saved is FALSE.
-	 */
-	jmp_buf	saved_jmp_buf;
-
 	/*
 	 * TRUE if the last state saved was a signal context. FALSE if the
 	 * last state saved was a jump buffer.
@@ -362,6 +362,12 @@ struct pthread {
 	int	sig_saved;
 
 	/*
+	 * Cancelability state.
+	 */
+	int	cancelstate;
+	int	canceltype;
+
+	/*
 	 * Current signal mask and pending signals.
 	 */
 	sigset_t	sigmask;
@@ -441,8 +447,10 @@ struct pthread {
 	int		signo;
 
 	/* Miscellaneous data. */
-	char		flags;
-#define PTHREAD_EXITING		0x0100
+	int		flags;
+#define PTHREAD_EXITING		(0x0100)
+#define PTHREAD_CANCELLING	(0x0200)	/* thread has been cancelled */
+#define PTHREAD_AT_CANCEL_POINT	(0x0400)	/* thread at cancel point */
 	char		pthread_priority;
 	void		*ret;
 	const void	**specific_data;
@@ -453,8 +461,16 @@ struct pthread {
 	const char		*fname;	/* Ptr to source file name  */
 	int			lineno;	/* Source line number.      */
 
+	/* 
+	 * Saved jump buffer used in call to longjmp by _thread_kern_sched
+	 * if sig_saved is FALSE.
+	 */
+	_machdep_jmp_buf	saved_jmp_buf;
+
+#ifndef _UTHREAD_MACHDEP
 	/* Machine dependent information */
 	struct _machdep_struct	_machdep;
+#endif
 };
 
 /*
@@ -577,6 +593,10 @@ int     _thread_fd_table_init(int fd);
 struct pthread *_thread_queue_get(struct pthread_queue *);
 struct pthread *_thread_queue_deq(struct pthread_queue *);
 pthread_addr_t _thread_gc(pthread_addr_t);
+void	_thread_enter_cancellation_point(void);
+void	_thread_leave_cancellation_point(void);
+void	_thread_cancellation_point(void);
+void	_thread_atfork(int);
 
 /* #include <signal.h> */
 #ifdef _USER_SIGNAL_H
@@ -761,6 +781,9 @@ pid_t   _thread_sys_wait4(pid_t, int *, int, struct rusage *);
 int	_thread_sys_poll(struct pollfd[], int, int);
 #endif
 
+/* #include <sys/mman.h> */
+int	_thread_sys_msync(void *, size_t, int);
+
 __END_DECLS
 
 #endif  /* !_PTHREAD_PRIVATE_H */
diff --git a/lib/libpthread/include/pthread.h b/lib/libpthread/include/pthread.h
index 3215c445a40..0c935fabc97 100644
--- a/lib/libpthread/include/pthread.h
+++ b/lib/libpthread/include/pthread.h
@@ -30,7 +30,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
  * SUCH DAMAGE.
  *
- * $OpenBSD: pthread.h,v 1.4 1998/12/21 07:30:25 d Exp $
+ * $OpenBSD: pthread.h,v 1.5 1999/01/18 00:00:31 d Exp $
  *
  */
 #ifndef _PTHREAD_H_
@@ -91,6 +91,15 @@
 #define PTHREAD_PROCESS_SHARED      1	
 
 /*
+ * Flags for cancelling threads
+ */
+#define PTHREAD_CANCEL_ENABLE		0
+#define PTHREAD_CANCEL_DISABLE		1
+#define PTHREAD_CANCEL_DEFERRED		0
+#define PTHREAD_CANCEL_ASYNCHRONOUS	1
+#define PTHREAD_CANCELED		((void *) 1)
+
+/*
  * Forward structure definitions.
  *
  * These are mostly opaque to the user.
@@ -174,24 +183,26 @@ enum pthread_mutextype {
  * Thread function prototype definitions:
  */
 __BEGIN_DECLS
+int		pthread_atfork(void (*)(void), void (*)(void), void (*)(void));
 int		pthread_attr_destroy __P((pthread_attr_t *));
-int		pthread_attr_getinheritsched __P((pthread_attr_t *, int *));
-int		pthread_attr_getschedparam __P((pthread_attr_t *,
+int		pthread_attr_getinheritsched __P((const pthread_attr_t *, int *));
+int		pthread_attr_getschedparam __P((const pthread_attr_t *,
 			struct sched_param *));
-int		pthread_attr_getschedpolicy __P((pthread_attr_t *, int *));
-int		pthread_attr_getscope __P((pthread_attr_t *, int *));
+int		pthread_attr_getschedpolicy __P((const pthread_attr_t *, int *));
+int		pthread_attr_getscope __P((const pthread_attr_t *, int *));
 int		pthread_attr_getstacksize __P((pthread_attr_t *, size_t *));
 int		pthread_attr_getstackaddr __P((pthread_attr_t *, void **));
 int		pthread_attr_getdetachstate __P((pthread_attr_t *, int *));
 int		pthread_attr_init __P((pthread_attr_t *));
 int		pthread_attr_setinheritsched __P((pthread_attr_t *, int));
 int		pthread_attr_setschedparam __P((pthread_attr_t *,
-			struct sched_param *));
+			const struct sched_param *));
 int		pthread_attr_setschedpolicy __P((pthread_attr_t *, int));
 int		pthread_attr_setscope __P((pthread_attr_t *, int));
 int		pthread_attr_setstacksize __P((pthread_attr_t *, size_t));
 int		pthread_attr_setstackaddr __P((pthread_attr_t *, void *));
 int		pthread_attr_setdetachstate __P((pthread_attr_t *, int));
+int		pthread_cancel __P((pthread_t));
 void		pthread_cleanup_pop __P((int execute));
 void		pthread_cleanup_push __P((void (*routine) (void *),
 			void *routine_arg));
@@ -264,14 +275,14 @@ int		pthread_setcancelstate __P((int, int *));
 int		pthread_setcanceltype __P((int, int *));
 int		pthread_setspecific __P((pthread_key_t, const void *));
 int		pthread_sigmask __P((int, const sigset_t *, sigset_t *));
-int		pthread_testcancel __P((void));
+void		pthread_testcancel __P((void));
 
 
 int		pthread_getprio __P((pthread_t));
 int		pthread_setprio __P((pthread_t, int));
 void		pthread_yield __P((void));
 int		pthread_setschedparam __P((pthread_t pthread, int policy,
-			struct sched_param * param));
+			const struct sched_param * param));
 int		pthread_getschedparam __P((pthread_t pthread, int *policy,
 			struct sched_param * param));
 int		pthread_attr_setfloatstate __P((pthread_attr_t *, int));
@@ -284,11 +295,7 @@ int		pthread_attr_setcleanup __P((pthread_attr_t *,
 /*
  * Single Unix Specification v2 (UNIX98) also wants these:
  */
-#define PTHREAD_CANCEL_ASYNCHRONOUS
-#define PTHREAD_CANCEL_ENABLE
-#define PTHREAD_CANCEL_DEFERRED
-#define PTHREAD_CANCEL_DISABLE
-#define PTHREAD_CANCELED
+
 #define PTHREAD_PRIO_INHERIT
 #define PTHREAD_PRIO_NONE
 #define PTHREAD_PRIO_PROTECT
diff --git a/lib/libpthread/man/Makefile.inc b/lib/libpthread/man/Makefile.inc
index f3ff1ba09a2..f637c4a88cf 100644
--- a/lib/libpthread/man/Makefile.inc
+++ b/lib/libpthread/man/Makefile.inc
@@ -1,11 +1,12 @@
-# $Id: Makefile.inc,v 1.3 1998/11/20 15:15:06 d Exp $
-# $OpenBSD: Makefile.inc,v 1.3 1998/11/20 15:15:06 d Exp $
+# $Id: Makefile.inc,v 1.4 1999/01/18 00:00:32 d Exp $
+# $OpenBSD: Makefile.inc,v 1.4 1999/01/18 00:00:32 d Exp $
 
 # POSIX thread man files
 
 .PATH: ${.CURDIR}/man
 
-MAN+=	pthread_cleanup_pop.3 \
+MAN+=	pthread_atfork.3 \
+	pthread_cleanup_pop.3 \
 	pthread_cleanup_push.3 \
 	pthread_cond_broadcast.3 \
 	pthread_cond_destroy.3 \
@@ -13,6 +14,7 @@ MAN+=	pthread_cleanup_pop.3 \
 	pthread_cond_signal.3 \
 	pthread_cond_timedwait.3 \
 	pthread_cond_wait.3 \
+	pthread_cancel.3 \
 	pthread_create.3 \
 	pthread_detach.3 \
 	pthread_equal.3 \
@@ -37,7 +39,8 @@ MAN+=	pthread_cleanup_pop.3 \
 	pthread_rwlockattr_init.3 \
 	pthread_rwlockattr_setpshared.3 \
 	pthread_self.3 \
-	pthread_setspecific.3
+	pthread_setspecific.3 \
+	pthread_testcancel.3
 
 MAN+=	pthreads.3 \
 	flockfile.3 \
@@ -46,5 +49,7 @@ MAN+=	pthreads.3 \
 MLINKS+=flockfile.3 funlockfile.3 \
 	flockfile.3 ftrylockfile.3 \
 	pthread_rwlock_rdlock.3 pthread_rwlock_tryrdlock.3 \
-	pthread_rwlock_wrlock.3 pthread_rwlock_trywrlock.3
+	pthread_rwlock_wrlock.3 pthread_rwlock_trywrlock.3 \
+	pthread_cancel.3 pthread_setcancelstate.3 \
+	pthread_cancel.3 pthread_getcancelstate.3 \
 	
diff --git a/lib/libpthread/uthread/Makefile.inc b/lib/libpthread/uthread/Makefile.inc
index bbaea92c049..e525110ebb3 100644
--- a/lib/libpthread/uthread/Makefile.inc
+++ b/lib/libpthread/uthread/Makefile.inc
@@ -1,5 +1,5 @@
-#	$Id: Makefile.inc,v 1.5 1999/01/08 05:42:18 d Exp $
-#	$OpenBSD: Makefile.inc,v 1.5 1999/01/08 05:42:18 d Exp $
+#	$Id: Makefile.inc,v 1.6 1999/01/18 00:00:32 d Exp $
+#	$OpenBSD: Makefile.inc,v 1.6 1999/01/18 00:00:32 d Exp $
 
 # uthread sources
 .PATH: ${.CURDIR}/uthread
@@ -8,17 +8,21 @@ CFLAGS += -I${.CURDIR}/arch/${MACHINE_ARCH}
 
 SRCS+= \
 	uthread_accept.c \
+	uthread_atfork.c \
 	uthread_attr_destroy.c \
 	uthread_attr_init.c \
 	uthread_attr_getdetachstate.c \
 	uthread_attr_getstackaddr.c \
 	uthread_attr_getstacksize.c \
+	uthread_attr_priosched.c \
 	uthread_attr_setcreatesuspend_np.c \
 	uthread_attr_setdetachstate.c \
 	uthread_attr_setstackaddr.c \
 	uthread_attr_setstacksize.c \
 	uthread_autoinit.c \
 	uthread_bind.c \
+	uthread_fchflags.c \
+	uthread_cancel.c \
 	uthread_clean.c \
 	uthread_close.c \
 	uthread_cond.c \
@@ -60,6 +64,7 @@ SRCS+= \
 	uthread_listen.c \
 	uthread_mattr_init.c \
 	uthread_mattr_kind_np.c \
+	uthread_msync.c \
 	uthread_multi_np.c \
 	uthread_mutex.c \
 	uthread_mutexattr_destroy.c \
diff --git a/lib/libpthread/uthread/pthread_private.h b/lib/libpthread/uthread/pthread_private.h
index 28cfcfa7ae7..ff318b3b611 100644
--- a/lib/libpthread/uthread/pthread_private.h
+++ b/lib/libpthread/uthread/pthread_private.h
@@ -31,7 +31,7 @@
  *
  * Private thread definitions for the uthread kernel.
  *
- * $OpenBSD: pthread_private.h,v 1.10 1999/01/10 22:32:23 d Exp $
+ * $OpenBSD: pthread_private.h,v 1.11 1999/01/18 00:00:32 d Exp $
  *
  */
 
@@ -50,7 +50,9 @@
 #include <sys/time.h>
 #include <sched.h>
 #include <spinlock.h>
+#ifndef _NO_UTHREAD_MACHDEP
 #include "uthread_machdep.h"
+#endif
 
 /*
  * Kernel fatal error handler macro.
@@ -197,6 +199,10 @@ struct pthread_attr {
 #define PTHREAD_MIN_PRIORITY			0
 #define _POSIX_THREAD_ATTR_STACKSIZE
 
+#define PTHREAD_ATFORK_PREPARE			0
+#define PTHREAD_ATFORK_PARENT			1
+#define PTHREAD_ATFORK_CHILD			2
+
 /*
  * Clock resolution in nanoseconds.
  */
@@ -349,12 +355,6 @@ struct pthread {
 	 */
 	struct  sigcontext saved_sigcontext;
 
-	/* 
-	 * Saved jump buffer used in call to longjmp by _thread_kern_sched
-	 * if sig_saved is FALSE.
-	 */
-	jmp_buf	saved_jmp_buf;
-
 	/*
 	 * TRUE if the last state saved was a signal context. FALSE if the
 	 * last state saved was a jump buffer.
@@ -362,6 +362,12 @@ struct pthread {
 	int	sig_saved;
 
 	/*
+	 * Cancelability state.
+	 */
+	int	cancelstate;
+	int	canceltype;
+
+	/*
 	 * Current signal mask and pending signals.
 	 */
 	sigset_t	sigmask;
@@ -441,8 +447,10 @@ struct pthread {
 	int		signo;
 
 	/* Miscellaneous data. */
-	char		flags;
-#define PTHREAD_EXITING		0x0100
+	int		flags;
+#define PTHREAD_EXITING		(0x0100)
+#define PTHREAD_CANCELLING	(0x0200)	/* thread has been cancelled */
+#define PTHREAD_AT_CANCEL_POINT	(0x0400)	/* thread at cancel point */
 	char		pthread_priority;
 	void		*ret;
 	const void	**specific_data;
@@ -453,8 +461,16 @@ struct pthread {
 	const char		*fname;	/* Ptr to source file name  */
 	int			lineno;	/* Source line number.      */
 
+	/* 
+	 * Saved jump buffer used in call to longjmp by _thread_kern_sched
+	 * if sig_saved is FALSE.
+	 */
+	_machdep_jmp_buf	saved_jmp_buf;
+
+#ifndef _UTHREAD_MACHDEP
 	/* Machine dependent information */
 	struct _machdep_struct	_machdep;
+#endif
 };
 
 /*
@@ -577,6 +593,10 @@ int     _thread_fd_table_init(int fd);
 struct pthread *_thread_queue_get(struct pthread_queue *);
 struct pthread *_thread_queue_deq(struct pthread_queue *);
 pthread_addr_t _thread_gc(pthread_addr_t);
+void	_thread_enter_cancellation_point(void);
+void	_thread_leave_cancellation_point(void);
+void	_thread_cancellation_point(void);
+void	_thread_atfork(int);
 
 /* #include <signal.h> */
 #ifdef _USER_SIGNAL_H
@@ -761,6 +781,9 @@ pid_t   _thread_sys_wait4(pid_t, int *, int, struct rusage *);
 int	_thread_sys_poll(struct pollfd[], int, int);
 #endif
 
+/* #include <sys/mman.h> */
+int	_thread_sys_msync(void *, size_t, int);
+
 __END_DECLS
 
 #endif  /* !_PTHREAD_PRIVATE_H */