runtime: do not create new threads during malloc.

the signal handling stack is a different size than
	the normal stack, so it cannot be allocated using
	the backup stack allocator.

Fixes #250.

R=agl1
CC=golang-dev
https://golang.org/cl/157044
This commit is contained in:
Russ Cox 2009-11-17 14:42:08 -08:00
parent 33d10e4d32
commit 4dfd7fdde5
1 changed files with 5 additions and 2 deletions

View File

@ -146,7 +146,7 @@ tracebackothers(G *me)
for(g = allg; g != nil; g = g->alllink) {
if(g == me || g->status == Gdead)
continue;
printf("\ngoroutine %d:\n", g->goid);
printf("\ngoroutine %d [%d]:\n", g->goid, g->status);
traceback(g->sched.pc, g->sched.sp, g);
}
}
@ -411,10 +411,13 @@ struct CgoThreadStart
static void
matchmg(void)
{
M *m;
G *g;
if(m->mallocing)
return;
while(sched.mcpu < sched.mcpumax && (g = gget()) != nil){
M *m;
// Find the m that will run g.
if((m = mget(g)) == nil){
m = malloc(sizeof(M));