From 2c87dda8f89e84082523b03b62c5d47d55c13341 Mon Sep 17 00:00:00 2001
From: rsc <devnull@localhost>
Date: Tue, 28 Dec 2004 01:35:38 +0000
Subject: add threaddaemonize(), more bug fixes

---
 src/libthread/Linux.c | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

(limited to 'src/libthread/Linux.c')

diff --git a/src/libthread/Linux.c b/src/libthread/Linux.c
index 357e9260..1c9d8c20 100644
--- a/src/libthread/Linux.c
+++ b/src/libthread/Linux.c
@@ -8,6 +8,9 @@
 #include "thread.h"
 #include "threadimpl.h"
 
+int ngetpid;
+
+
 /*
  * spin locks
  */
@@ -99,15 +102,12 @@ again:
 	sigdelset(&mask, SIGUSR1);
 	sigsuspend(&mask);
 
-//print("%d %d awake again\n", time(0), getpid());
-
 	/*
 	 * We're awake.  Make USR1 not interrupt system calls.
 	 */
 	lock(r->l);
 	ignusr1(1);
 	if(r->asleep && r->pid == getpid()){
-//print("resleep %d\n", getpid());
 		/* Didn't really wake up - signal from something else */
 		goto again;
 	}
@@ -160,11 +160,15 @@ dofreestacks(void)
 		next = sf->next;
 		if(sf->pid >= 1 && kill(sf->pid, 0) < 0 && errno == ESRCH){
 			free(sf);
-			last->next = next;
+			if(last)
+				last->next = next;
+			else
+				stackfree = next;
 			sf = last;
 		}
 	}
-}	
+	unlock(&stacklock);
+}
 
 static int
 startprocfn(void *v)
@@ -240,7 +244,7 @@ static char *threadexitsmsg;
 void
 sigusr2handler(int s)
 {
-	print("%d usr2 %d\n", time(0), getpid());
+/*	fprint(2, "%d usr2 %d\n", time(0), getpid()); */
 	if(threadexitsmsg)
 		_exits(threadexitsmsg);
 }
@@ -341,7 +345,8 @@ _threadsetproc(Proc *p)
 {
 	Perproc *pp;
 
-	p->osprocid = getpid();
+	if(p)
+		p->osprocid = getpid();
 	pp = newperproc();
 	pp->proc = p;
 	if(p == nil)
-- 
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