plan9port

commit 37cc72d323478b1d98ee741e3d88557d141e7767
parent e9dbe11dbf43197892680f3b5084cd12b6dc198b
Author: rsc <devnull@localhost>
Date:   Tue, 11 Jan 2005 21:28:00 +0000

paranoia

Diffstat:
M
src/libthread/daemonize.c
 | 
10
+++++++++-
M
src/libthread/thread.c
 | 
9
++++++++-

2 files changed, 17 insertions(+), 2 deletions(-)
diff --git a/src/libthread/daemonize.c b/src/libthread/daemonize.c
@@ -38,7 +38,15 @@ child(void)
 		raise(WTERMSIG(status));
 		_exit(98);	/* not reached */
 	}
-	fprint(2, "%s: wait pid %d status 0x%ux\n", pid, status);
+	if(WIFSTOPPED(status)){
+		fprint(2, "%s: wait pid %d stopped\n", argv0, pid);
+		return;
+	}
+	if(WIFCONTINUED(status)){
+		fprint(2, "%s: wait pid %d continued\n", argv0, pid);
+		return;
+	}
+	fprint(2, "%s: wait pid %d status 0x%ux\n", argv0, pid, status);
 	_exit(99);
 }
 
diff --git a/src/libthread/thread.c b/src/libthread/thread.c
@@ -112,12 +112,19 @@ threadalloc(void (*fn)(void*), void *arg, uint stack)
 	sigprocmask(SIG_BLOCK, &zero, &t->context.uc.uc_sigmask);
 
 	/* must initialize with current context */
-	getcontext(&t->context.uc);
+	if(getcontext(&t->context.uc) < 0)
+		sysfatal("threadalloc getcontext: %r");
 
 	/* call makecontext to do the real work. */
 	/* leave a few words open on both ends */
 	t->context.uc.uc_stack.ss_sp = t->stk+8;
 	t->context.uc.uc_stack.ss_size = t->stksize-64;
+#ifdef __sun__		/* sigh */
+	/* can avoid this with __MAKECONTEXT_V2_SOURCE but only on SunOS 5.9 */
+	t->context.uc_stack.ss_sp = 
+		(char*)t->context.uc_stack.ss_sp
+		+t->context.uc_stack.ss_size;
+#endif
 	makecontext(&t->context.uc, (void(*)())threadstart, 1, t);
 
 	return t;