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aprof.go
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bigstack_windows.c
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bigstack_windows.go
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callback.go
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catchpanic.go
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cgo.go
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deadlock.go
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lockosthread.go
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main.go
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numgoroutine.go
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pprof.go
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sigstack.go
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stack_windows.go
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threadpanic.go
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threadpanic_unix.c
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threadpanic_windows.c
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threadpprof.go
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traceback.go
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tracebackctxt.go
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tracebackctxt_c.c
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Code Editor : callback.go
// Copyright 2015 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. // +build !plan9,!windows package main /* #include <pthread.h> void go_callback(); static void *thr(void *arg) { go_callback(); return 0; } static void foo() { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 256 << 10); pthread_create(&th, &attr, thr, 0); pthread_join(th, 0); } */ import "C" import ( "fmt" "os" "runtime" ) func init() { register("CgoCallbackGC", CgoCallbackGC) } //export go_callback func go_callback() { runtime.GC() grow() runtime.GC() } var cnt int func grow() { x := 10000 sum := 0 if grow1(&x, &sum) == 0 { panic("bad") } } func grow1(x, sum *int) int { if *x == 0 { return *sum + 1 } *x-- sum1 := *sum + *x return grow1(x, &sum1) } func CgoCallbackGC() { P := 100 if os.Getenv("RUNTIME_TESTING_SHORT") != "" { P = 10 } done := make(chan bool) // allocate a bunch of stack frames and spray them with pointers for i := 0; i < P; i++ { go func() { grow() done <- true }() } for i := 0; i < P; i++ { <-done } // now give these stack frames to cgo callbacks for i := 0; i < P; i++ { go func() { C.foo() done <- true }() } for i := 0; i < P; i++ { <-done } fmt.Printf("OK\n") }
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