plan9port

commit 0829f75bba8a5eb60a7f46e21aa266736b4c4bab
parent 5186b55afc97730b733a85cdcb38d6ee7fdd32c7
Author: Russ Cox <rsc@swtch.com>
Date:   Mon, 17 Aug 2009 17:29:44 -0700

libthread: make page work on OS X

Diffstat:
M
src/libthread/exec.c
 | 
1
+
M
src/libthread/thread.c
 | 
4
++++

2 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/src/libthread/exec.c b/src/libthread/exec.c
@@ -62,6 +62,7 @@ _threadspawn(int fd[3], char *cmd, char *argv[])
 	int i, n, p[2], pid;
 	char exitstr[100];
 
+	notifyoff("sys: child");	/* do not let child note kill us */
 	if(pipe(p) < 0)
 		return -1;
 	if(fcntl(p[0], F_SETFD, 1) < 0 || fcntl(p[1], F_SETFD, 1) < 0){
diff --git a/src/libthread/thread.c b/src/libthread/thread.c
@@ -155,6 +155,10 @@ _threadcreate(Proc *p, void (*fn)(void*), void *arg, uint stack)
 {
 	_Thread *t;
 
+	/* defend against bad C libraries */
+	if(stack < (256<<10))
+		stack = 256<<10;
+	
 	t = threadalloc(fn, arg, stack);
 	t->proc = p;
 	addthreadinproc(p, t);