src/pkg/runtime/cgo/windows_amd64.c

// Copyright 2009 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.

#define WIN64_LEAN_AND_MEAN
#include <windows.h>
#include "libcgo.h"

static void *threadentry(void*);

/* From what I've read 2MB is default for 64-bit Linux. 
   Allocation granularity on Windows is typically 64 KB. */
#define STACKSIZE (2*1024*1024)

static void
xinitcgo(void)
{
}

void (*initcgo)(void) = xinitcgo;

void
libcgo_sys_thread_start(ThreadStart *ts)
{
	ts->g->stackguard = STACKSIZE;
	_beginthread(threadentry, STACKSIZE, ts);
}

static void*
threadentry(void *v)
{
	ThreadStart ts;

	ts = *(ThreadStart*)v;
	free(v);

	ts.g->stackbase = (uintptr)&ts;

	/*
	* libcgo_sys_thread_start set stackguard to stack size;
	* change to actual guard pointer.
	*/
	ts.g->stackguard = (uintptr)&ts - ts.g->stackguard + 4096;

	crosscall_386(ts.fn);
	return nil;
}