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Current Path: /opt/golang/1.22.0/src/runtime/testdata/testprogcgo

opt / golang / 1.22.0 / src / runtime / testdata / testprogcgo /

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📄 aprof.go(1.14 KB)
📄 aprof_c.c(217 B)
📄 bigstack1_windows.c(379 B)
📄 bigstack_windows.c(1.2 KB)
📄 bigstack_windows.go(586 B)
📄 bindm.c(692 B)
📄 bindm.go(1.2 KB)
📄 callback.go(1.86 KB)
📄 catchpanic.go(993 B)
📄 cgo.go(1.82 KB)
📄 cgonocallback.c(236 B)
📄 cgonocallback.go(629 B)
📄 cgonoescape.go(1.84 KB)
📄 crash.go(743 B)
📄 deadlock.go(509 B)
📄 destructor.c(459 B)
📄 destructor.go(442 B)
📄 dll_windows.go(459 B)
📄 dropm.go(1.05 KB)
📄 dropm_stub.go(336 B)
📄 eintr.go(5.17 KB)
📄 exec.go(2.1 KB)
📄 gprof.go(868 B)
📄 gprof_c.c(700 B)
📄 issue29707.go(1.15 KB)
📄 lockosthread.c(301 B)
📄 lockosthread.go(2.52 KB)
📄 main.go(651 B)
📄 needmdeadlock.go(1.83 KB)
📄 numgoroutine.go(1.91 KB)
📄 panic.c(239 B)
📄 panic.go(312 B)
📄 pprof.go(1.67 KB)
📄 pprof_callback.go(1.82 KB)
📄 raceprof.go(1.67 KB)
📄 racesig.go(1.67 KB)
📄 segv.go(525 B)
📄 segv_linux.go(546 B)
📄 sigfwd.go(1.58 KB)
📄 sigpanic.go(484 B)
📄 sigstack.go(2.09 KB)
📄 sigthrow.go(312 B)
📄 stack_windows.go(1.1 KB)
📄 stackswitch.c(3.88 KB)
📄 stackswitch.go(1.07 KB)
📄 threadpanic.go(428 B)
📄 threadpanic_unix.c(435 B)
📄 threadpanic_windows.c(435 B)
📄 threadpprof.go(2.54 KB)
📄 threadprof.go(2.41 KB)
📄 trace.go(1.15 KB)
📄 trace_unix.c(688 B)
📄 trace_windows.c(777 B)
📄 traceback.go(949 B)
📄 traceback_c.c(1.21 KB)
📄 tracebackctxt.go(2.85 KB)
📄 tracebackctxt_c.c(2.33 KB)
📁 windows

Editing: tracebackctxt.go

// Copyright 2016 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.

package main

// Test the context argument to SetCgoTraceback.
// Use fake context, traceback, and symbolizer functions.

/*
// Defined in tracebackctxt_c.c.
extern void C1(void);
extern void C2(void);
extern void tcContext(void*);
extern void tcContextSimple(void*);
extern void tcTraceback(void*);
extern void tcSymbolizer(void*);
extern int getContextCount(void);
extern void TracebackContextPreemptionCallGo(int);
*/
import "C"

import (
	"fmt"
	"runtime"
	"sync"
	"unsafe"
)

func init() {
	register("TracebackContext", TracebackContext)
	register("TracebackContextPreemption", TracebackContextPreemption)
}

var tracebackOK bool

func TracebackContext() {
	runtime.SetCgoTraceback(0, unsafe.Pointer(C.tcTraceback), unsafe.Pointer(C.tcContext), unsafe.Pointer(C.tcSymbolizer))
	C.C1()
	if got := C.getContextCount(); got != 0 {
		fmt.Printf("at end contextCount == %d, expected 0\n", got)
		tracebackOK = false
	}
	if tracebackOK {
		fmt.Println("OK")
	}
}

//export G1
func G1() {
	C.C2()
}

//export G2
func G2() {
	pc := make([]uintptr, 32)
	n := runtime.Callers(0, pc)
	cf := runtime.CallersFrames(pc[:n])
	var frames []runtime.Frame
	for {
		frame, more := cf.Next()
		frames = append(frames, frame)
		if !more {
			break
		}
	}

want := []struct {
		function string
		line     int
	}{
		{"main.G2", 0},
		{"cFunction", 0x10200},
		{"cFunction", 0x200},
		{"cFunction", 0x10201},
		{"cFunction", 0x201},
		{"main.G1", 0},
		{"cFunction", 0x10100},
		{"cFunction", 0x100},
		{"main.TracebackContext", 0},
	}

ok := true
	i := 0
wantLoop:
	for _, w := range want {
		for ; i < len(frames); i++ {
			if w.function == frames[i].Function {
				if w.line != 0 && w.line != frames[i].Line {
					fmt.Printf("found function %s at wrong line %#x (expected %#x)\n", w.function, frames[i].Line, w.line)
					ok = false
				}
				i++
				continue wantLoop
			}
		}
		fmt.Printf("did not find function %s in\n", w.function)
		for _, f := range frames {
			fmt.Println(f)
		}
		ok = false
		break
	}
	tracebackOK = ok
	if got := C.getContextCount(); got != 2 {
		fmt.Printf("at bottom contextCount == %d, expected 2\n", got)
		tracebackOK = false
	}
}

// Issue 47441.
func TracebackContextPreemption() {
	runtime.SetCgoTraceback(0, unsafe.Pointer(C.tcTraceback), unsafe.Pointer(C.tcContextSimple), unsafe.Pointer(C.tcSymbolizer))

fmt.Println("OK")
}

//export TracebackContextPreemptionGoFunction
func TracebackContextPreemptionGoFunction(i C.int) {
	// Do some busy work.
	fmt.Sprintf("%d\n", i)
}

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Editing: tracebackctxt.go

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