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

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

📁 ..
📄 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_c.c

// 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.

// The C definitions for tracebackctxt.go. That file uses //export so
// it can't put function definitions in the "C" import comment.

#include <stdlib.h>
#include <stdint.h>

// Functions exported from Go.
extern void G1(void);
extern void G2(void);
extern void TracebackContextPreemptionGoFunction(int);

void C1() {
	G1();
}

void C2() {
	G2();
}

struct cgoContextArg {
	uintptr_t context;
};

struct cgoTracebackArg {
	uintptr_t  context;
	uintptr_t  sigContext;
	uintptr_t* buf;
	uintptr_t  max;
};

struct cgoSymbolizerArg {
	uintptr_t   pc;
	const char* file;
	uintptr_t   lineno;
	const char* func;
	uintptr_t   entry;
	uintptr_t   more;
	uintptr_t   data;
};

// Uses atomic adds and subtracts to catch the possibility of
// erroneous calls from multiple threads; that should be impossible in
// this test case, but we check just in case.
static int contextCount;

int getContextCount() {
	return __sync_add_and_fetch(&contextCount, 0);
}

void tcContext(void* parg) {
	struct cgoContextArg* arg = (struct cgoContextArg*)(parg);
	if (arg->context == 0) {
		arg->context = __sync_add_and_fetch(&contextCount, 1);
	} else {
		if (arg->context != __sync_add_and_fetch(&contextCount, 0)) {
			abort();
		}
		__sync_sub_and_fetch(&contextCount, 1);
	}
}

void tcContextSimple(void* parg) {
	struct cgoContextArg* arg = (struct cgoContextArg*)(parg);
	if (arg->context == 0) {
		arg->context = 1;
	}
}

void tcTraceback(void* parg) {
	int base, i;
	struct cgoTracebackArg* arg = (struct cgoTracebackArg*)(parg);
	if (arg->context == 0 && arg->sigContext == 0) {
		// This shouldn't happen in this program.
		abort();
	}
	// Return a variable number of PC values.
	base = arg->context << 8;
	for (i = 0; i < arg->context; i++) {
		if (i < arg->max) {
			arg->buf[i] = base + i;
		}
	}
}

void tcSymbolizer(void *parg) {
	struct cgoSymbolizerArg* arg = (struct cgoSymbolizerArg*)(parg);
	if (arg->pc == 0) {
		return;
	}
	// Report two lines per PC returned by traceback, to test more handling.
	arg->more = arg->file == NULL;
	arg->file = "tracebackctxt.go";
	arg->func = "cFunction";
	arg->lineno = arg->pc + (arg->more << 16);
}

void TracebackContextPreemptionCallGo(int i) {
	TracebackContextPreemptionGoFunction(i);
}

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Editing: tracebackctxt_c.c

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