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| author | rsc <devnull@localhost> | 2005-01-13 04:49:19 +0000 |
|---|---|---|
| committer | rsc <devnull@localhost> | 2005-01-13 04:49:19 +0000 |
| commit | c8b6342d3c2a167dec16931815926e9e4387e7ef (patch) | |
| tree | 80d3ec6ea074462b30639168113def880476dad6 /src/libthread/thread.c | |
| parent | 741f510ce758f77ed5193256fb693a09a7daecce (diff) | |
| download | plan9port-c8b6342d3c2a167dec16931815926e9e4387e7ef.tar.gz plan9port-c8b6342d3c2a167dec16931815926e9e4387e7ef.tar.bz2 plan9port-c8b6342d3c2a167dec16931815926e9e4387e7ef.zip | |
Many small edits.
Diffstat (limited to 'src/libthread/thread.c')
| -rw-r--r-- | src/libthread/thread.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/src/libthread/thread.c b/src/libthread/thread.c index 2b6d1e37..b886e30b 100644 --- a/src/libthread/thread.c +++ b/src/libthread/thread.c @@ -169,6 +169,7 @@ _threadswitch(void) { Proc *p; + needstack(0); p = proc(); //print("threadswtch %p\n", p); contextswitch(&p->thread->context, &p->schedcontext); @@ -324,6 +325,20 @@ threadsetstate(char *fmt, ...) va_end(arg); } +void +needstack(int n) +{ + _Thread *t; + + t = proc()->thread; + + if((char*)&t <= (char*)t->stk + || (char*)&t - (char*)t->stk < 256+n){ + fprint(2, "thread stack overflow\n"); + abort(); + } +} + /* * locking */ @@ -499,11 +514,6 @@ threadmainstart(void *v) threadmain(threadargc, threadargv); } -void -threadlinklibrary(void) -{ -} - int main(int argc, char **argv) { |