add threadid
diff --git a/include/thread.h b/include/thread.h
index 75592ee..9424d37 100644
--- a/include/thread.h
+++ b/include/thread.h
@@ -23,6 +23,7 @@
void _threadsleep(Rendez*);
_Thread *_threadwakeup(Rendez*);
#define yield threadyield
+int threadid(void);
/*
* I am tired of making this mistake.
diff --git a/src/libthread/thread.c b/src/libthread/thread.c
index 145a503..ca4d35a 100644
--- a/src/libthread/thread.c
+++ b/src/libthread/thread.c
@@ -370,6 +370,15 @@
va_end(arg);
}
+int
+threadid(void)
+{
+ _Thread *t;
+
+ t = proc()->thread;
+ return t->id;
+}
+
void
needstack(int n)
{
