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39 lines
747 B
C
39 lines
747 B
C
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// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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#include "runtime.h"
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#include "cgocall.h"
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Cgo *cgo; /* filled in by dynamic linker when Cgo is available */
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void
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cgocall(void (*fn)(void*), void *arg)
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{
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CgoWork w;
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CgoServer *s;
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if(cgo == nil)
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throw("cgocall unavailable");
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noteclear(&w.note);
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w.next = nil;
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w.fn = fn;
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w.arg = arg;
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lock(&cgo->lock);
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if((s = cgo->idle) != nil) {
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cgo->idle = s->next;
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s->work = &w;
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unlock(&cgo->lock);
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notewakeup(&s->note);
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} else {
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if(cgo->whead == nil) {
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cgo->whead = &w;
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} else
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cgo->wtail->next = &w;
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cgo->wtail = &w;
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unlock(&cgo->lock);
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}
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notesleep(&w.note);
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}
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