//
// Copyright 2017 Garrett D'Amore <garrett@damore.org>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt).  A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//

#ifndef PLATFORM_WIN_IMPL_H
#define PLATFORM_WIN_IMPL_H

#ifdef PLATFORM_WINDOWS

#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif

#include <mswsock.h>
#include <process.h>
#include <windows.h>
#include <winsock2.h>
#include <ws2tcpip.h>

#include "core/list.h"

// These types are provided for here, to permit them to be directly inlined
// elsewhere.

typedef struct nni_win_event nni_win_event;

// nni_win_event is used with io completion ports.  This allows us to get
// to a specific completion callback without requiring the poller (in the
// completion port) to know anything about the event itself.  We also use
// this to pass back status and counts to the routine, which may not be
// conveyed in the OVERLAPPED directly.
struct nni_win_event {
	OVERLAPPED olpd;
	HANDLE     h;
	void *     ptr;
	nni_cb     cb;
	nni_list   aios;
};

struct nni_plat_thr {
	void (*func)(void *);
	void * arg;
	HANDLE handle;
};

struct nni_plat_mtx {
	SRWLOCK srl;
	DWORD   owner;
	int     init;
};

struct nni_plat_cv {
	CONDITION_VARIABLE cv;
	PSRWLOCK           srl;
};

extern int nni_win_error(int);
extern int nni_winsock_error(int);

extern int         nni_win_event_init(nni_win_event *, nni_cb, void *, HANDLE);
extern void        nni_win_event_fini(nni_win_event *);
extern int         nni_win_event_reset(nni_win_event *);
extern OVERLAPPED *nni_win_event_overlapped(nni_win_event *);
extern void        nni_win_event_cancel(nni_win_event *);

extern int nni_win_iocp_register(HANDLE);

extern int  nni_win_iocp_sysinit(void);
extern void nni_win_iocp_sysfini(void);

extern int  nni_win_ipc_sysinit(void);
extern void nni_win_ipc_sysfini(void);

extern int  nni_win_resolv_sysinit(void);
extern void nni_win_resolv_sysfini(void);

#endif // PLATFORM_WINDOWS

#endif // PLATFORM_WIN_IMPL_H