9os

commit edbf49894b0b94bbbd67b229fe6a270559e681ce
parent b2a715aab2b262c5e75b82631756b13a14d4a550
Author: Roberto E. Vargas Caballero <roberto.vargas@midokura.com>
Date:   Fri, 18 Nov 2022 11:48:06 +0100

os9: Modify newtask() to allow pid 0

Pid 0 is reserved for the initialization task and newtask()
was returning 1 for the first task.

Diffstat:
M
src/os9/proc.c
 | 
5
++---

1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/src/os9/proc.c b/src/os9/proc.c
@@ -201,7 +201,7 @@ newtask(void)
 {
 	int pid;
 	Task *tp;
-	static int last;
+	static int last = -1;
 	static mutex_t m;
 
 	assert(NR_TASKS < MAXTID);
@@ -212,7 +212,7 @@ newtask(void)
 
 	for (;;) {
 		if (pid == MAXTID)
-			pid = 0;
+			pid = -1;
 		pid++;
 		if (pid == last)
 			goto err;
@@ -532,7 +532,6 @@ inittask(void)
 
 	if ((tp = newtask()) == NULL)
 		return NULL;
-	tp->pid = 0;
 
 	tp->text = NULL;
 	tp->data = NULL;