Close a race between a thread exiting and the freeing of it's stack.

After some discussion the best option seems to be to signal the thread's
death from within the kernel. This requires that thr_exit() take an
argument.

Discussed with: davidxu, deischen, marcel
MFC after: 3 days

5 files changed, 6 insertions, 6 deletions

diff --git a/sys/compat/freebsd32/freebsd32_proto.h b/sys/compat/freebsd32/freebsd32_proto.h
index d708695..cf0c0bb 100644
--- a/sys/compat/freebsd32/freebsd32_proto.h
+++ b/sys/compat/freebsd32/freebsd32_proto.h
@@ -3,7 +3,7 @@
  *
  * DO NOT EDIT-- this file is automatically generated.
  * $FreeBSD$
- * created from FreeBSD: src/sys/compat/freebsd32/syscalls.master,v 1.40 2004/07/14 00:03:30 peter Exp 
+ * created from FreeBSD: src/sys/compat/freebsd32/syscalls.master,v 1.41 2004/10/06 14:20:57 mtm Exp 
  */
 
 #ifndef _FREEBSD32_SYSPROTO_H_
diff --git a/sys/compat/freebsd32/freebsd32_syscall.h b/sys/compat/freebsd32/freebsd32_syscall.h
index 94871fa..ddcd675 100644
--- a/sys/compat/freebsd32/freebsd32_syscall.h
+++ b/sys/compat/freebsd32/freebsd32_syscall.h
@@ -3,7 +3,7 @@
  *
  * DO NOT EDIT-- this file is automatically generated.
  * $FreeBSD$
- * created from FreeBSD: src/sys/compat/freebsd32/syscalls.master,v 1.40 2004/07/14 00:03:30 peter Exp 
+ * created from FreeBSD: src/sys/compat/freebsd32/syscalls.master,v 1.41 2004/10/06 14:20:57 mtm Exp 
  */
 
 #define	FREEBSD32_SYS_syscall	0
diff --git a/sys/compat/freebsd32/freebsd32_syscalls.c b/sys/compat/freebsd32/freebsd32_syscalls.c
index 2b79d17..08868aa 100644
--- a/sys/compat/freebsd32/freebsd32_syscalls.c
+++ b/sys/compat/freebsd32/freebsd32_syscalls.c
@@ -3,7 +3,7 @@
  *
  * DO NOT EDIT-- this file is automatically generated.
  * $FreeBSD$
- * created from FreeBSD: src/sys/compat/freebsd32/syscalls.master,v 1.40 2004/07/14 00:03:30 peter Exp 
+ * created from FreeBSD: src/sys/compat/freebsd32/syscalls.master,v 1.41 2004/10/06 14:20:57 mtm Exp 
  */
 
 const char *freebsd32_syscallnames[] = {
diff --git a/sys/compat/freebsd32/freebsd32_sysent.c b/sys/compat/freebsd32/freebsd32_sysent.c
index 21457f3..edb73bb 100644
--- a/sys/compat/freebsd32/freebsd32_sysent.c
+++ b/sys/compat/freebsd32/freebsd32_sysent.c
@@ -3,7 +3,7 @@
  *
  * DO NOT EDIT-- this file is automatically generated.
  * $FreeBSD$
- * created from FreeBSD: src/sys/compat/freebsd32/syscalls.master,v 1.40 2004/07/14 00:03:30 peter Exp 
+ * created from FreeBSD: src/sys/compat/freebsd32/syscalls.master,v 1.41 2004/10/06 14:20:57 mtm Exp 
  */
 
 #include "opt_compat.h"
@@ -456,7 +456,7 @@ struct sysent freebsd32_sysent[] = {
 	{ 0, (sy_call_t *)nosys },			/* 428 = __acl_aclcheck_link */
 	{ 0, (sy_call_t *)nosys },			/* 429 = sigwait */
 	{ SYF_MPSAFE | AS(thr_create_args), (sy_call_t *)thr_create },	/* 430 = thr_create */
-	{ SYF_MPSAFE | 0, (sy_call_t *)thr_exit },	/* 431 = thr_exit */
+	{ SYF_MPSAFE | AS(thr_exit_args), (sy_call_t *)thr_exit },	/* 431 = thr_exit */
 	{ SYF_MPSAFE | AS(thr_self_args), (sy_call_t *)thr_self },	/* 432 = thr_self */
 	{ SYF_MPSAFE | AS(thr_kill_args), (sy_call_t *)thr_kill },	/* 433 = thr_kill */
 	{ SYF_MPSAFE | AS(_umtx_lock_args), (sy_call_t *)_umtx_lock },	/* 434 = _umtx_lock */
diff --git a/sys/compat/freebsd32/syscalls.master b/sys/compat/freebsd32/syscalls.master
index 1babf95..c2ff8c1 100644
--- a/sys/compat/freebsd32/syscalls.master
+++ b/sys/compat/freebsd32/syscalls.master
@@ -596,7 +596,7 @@
 ; XXX implement
 429	UNIMPL	sigwait
 430	MNOPROTO { int thr_create(ucontext_t *ctx, long *id, int flag s); }
-431	MNOPROTO { void thr_exit(void); }
+431	MNOPROTO { void thr_exit(long *state); }
 432	MNOPROTO { int thr_self(long *id); }
 433	MNOPROTO { int thr_kill(long id, int sig); }
 434	MNOPROTO { int _umtx_lock(struct umtx *umtx); }