forked from nodejs/node
-
Notifications
You must be signed in to change notification settings - Fork 3
/
Copy pathuv-win.h
657 lines (572 loc) · 30.6 KB
/
uv-win.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#ifndef _WIN32_WINNT
# define _WIN32_WINNT 0x0502
#endif
#if !defined(_SSIZE_T_) && !defined(_SSIZE_T_DEFINED)
typedef intptr_t ssize_t;
# define _SSIZE_T_
# define _SSIZE_T_DEFINED
#endif
#include <winsock2.h>
#if defined(__MINGW32__) && !defined(__MINGW64_VERSION_MAJOR)
typedef struct pollfd {
SOCKET fd;
short events;
short revents;
} WSAPOLLFD, *PWSAPOLLFD, *LPWSAPOLLFD;
#endif
#ifndef LOCALE_INVARIANT
# define LOCALE_INVARIANT 0x007f
#endif
#ifndef _malloca
# if defined(_DEBUG)
# define _malloca(size) malloc(size)
# define _freea(ptr) free(ptr)
# else
# define _malloca(size) alloca(size)
# define _freea(ptr)
# endif
#endif
#include <mswsock.h>
#include <ws2tcpip.h>
#include <windows.h>
#include <process.h>
#include <signal.h>
#include <sys/stat.h>
#if defined(_MSC_VER) && _MSC_VER < 1600
# include "stdint-msvc2008.h"
#else
# include <stdint.h>
#endif
#include "tree.h"
#include "uv-threadpool.h"
#define MAX_PIPENAME_LEN 256
#ifndef S_IFLNK
# define S_IFLNK 0xA000
#endif
/* Additional signals supported by uv_signal and or uv_kill. The CRT defines
* the following signals already:
*
* #define SIGINT 2
* #define SIGILL 4
* #define SIGABRT_COMPAT 6
* #define SIGFPE 8
* #define SIGSEGV 11
* #define SIGTERM 15
* #define SIGBREAK 21
* #define SIGABRT 22
*
* The additional signals have values that are common on other Unix
* variants (Linux and Darwin)
*/
#define SIGHUP 1
#define SIGKILL 9
#define SIGWINCH 28
/* The CRT defines SIGABRT_COMPAT as 6, which equals SIGABRT on many */
/* unix-like platforms. However MinGW doesn't define it, so we do. */
#ifndef SIGABRT_COMPAT
# define SIGABRT_COMPAT 6
#endif
/*
* Guids and typedefs for winsock extension functions
* Mingw32 doesn't have these :-(
*/
#ifndef WSAID_ACCEPTEX
# define WSAID_ACCEPTEX \
{0xb5367df1, 0xcbac, 0x11cf, \
{0x95, 0xca, 0x00, 0x80, 0x5f, 0x48, 0xa1, 0x92}}
# define WSAID_CONNECTEX \
{0x25a207b9, 0xddf3, 0x4660, \
{0x8e, 0xe9, 0x76, 0xe5, 0x8c, 0x74, 0x06, 0x3e}}
# define WSAID_GETACCEPTEXSOCKADDRS \
{0xb5367df2, 0xcbac, 0x11cf, \
{0x95, 0xca, 0x00, 0x80, 0x5f, 0x48, 0xa1, 0x92}}
# define WSAID_DISCONNECTEX \
{0x7fda2e11, 0x8630, 0x436f, \
{0xa0, 0x31, 0xf5, 0x36, 0xa6, 0xee, 0xc1, 0x57}}
# define WSAID_TRANSMITFILE \
{0xb5367df0, 0xcbac, 0x11cf, \
{0x95, 0xca, 0x00, 0x80, 0x5f, 0x48, 0xa1, 0x92}}
typedef BOOL PASCAL (*LPFN_ACCEPTEX)
(SOCKET sListenSocket,
SOCKET sAcceptSocket,
PVOID lpOutputBuffer,
DWORD dwReceiveDataLength,
DWORD dwLocalAddressLength,
DWORD dwRemoteAddressLength,
LPDWORD lpdwBytesReceived,
LPOVERLAPPED lpOverlapped);
typedef BOOL PASCAL (*LPFN_CONNECTEX)
(SOCKET s,
const struct sockaddr* name,
int namelen,
PVOID lpSendBuffer,
DWORD dwSendDataLength,
LPDWORD lpdwBytesSent,
LPOVERLAPPED lpOverlapped);
typedef void PASCAL (*LPFN_GETACCEPTEXSOCKADDRS)
(PVOID lpOutputBuffer,
DWORD dwReceiveDataLength,
DWORD dwLocalAddressLength,
DWORD dwRemoteAddressLength,
LPSOCKADDR* LocalSockaddr,
LPINT LocalSockaddrLength,
LPSOCKADDR* RemoteSockaddr,
LPINT RemoteSockaddrLength);
typedef BOOL PASCAL (*LPFN_DISCONNECTEX)
(SOCKET hSocket,
LPOVERLAPPED lpOverlapped,
DWORD dwFlags,
DWORD reserved);
typedef BOOL PASCAL (*LPFN_TRANSMITFILE)
(SOCKET hSocket,
HANDLE hFile,
DWORD nNumberOfBytesToWrite,
DWORD nNumberOfBytesPerSend,
LPOVERLAPPED lpOverlapped,
LPTRANSMIT_FILE_BUFFERS lpTransmitBuffers,
DWORD dwFlags);
typedef PVOID RTL_SRWLOCK;
typedef RTL_SRWLOCK SRWLOCK, *PSRWLOCK;
#endif
typedef int (WSAAPI* LPFN_WSARECV)
(SOCKET socket,
LPWSABUF buffers,
DWORD buffer_count,
LPDWORD bytes,
LPDWORD flags,
LPWSAOVERLAPPED overlapped,
LPWSAOVERLAPPED_COMPLETION_ROUTINE completion_routine);
typedef int (WSAAPI* LPFN_WSARECVFROM)
(SOCKET socket,
LPWSABUF buffers,
DWORD buffer_count,
LPDWORD bytes,
LPDWORD flags,
struct sockaddr* addr,
LPINT addr_len,
LPWSAOVERLAPPED overlapped,
LPWSAOVERLAPPED_COMPLETION_ROUTINE completion_routine);
#ifndef _NTDEF_
typedef LONG NTSTATUS;
typedef NTSTATUS *PNTSTATUS;
#endif
#ifndef RTL_CONDITION_VARIABLE_INIT
typedef PVOID CONDITION_VARIABLE, *PCONDITION_VARIABLE;
#endif
typedef struct _AFD_POLL_HANDLE_INFO {
HANDLE Handle;
ULONG Events;
NTSTATUS Status;
} AFD_POLL_HANDLE_INFO, *PAFD_POLL_HANDLE_INFO;
typedef struct _AFD_POLL_INFO {
LARGE_INTEGER Timeout;
ULONG NumberOfHandles;
ULONG Exclusive;
AFD_POLL_HANDLE_INFO Handles[1];
} AFD_POLL_INFO, *PAFD_POLL_INFO;
#define UV_MSAFD_PROVIDER_COUNT 3
/**
* It should be possible to cast uv_buf_t[] to WSABUF[]
* see http://msdn.microsoft.com/en-us/library/ms741542(v=vs.85).aspx
*/
typedef struct uv_buf_t {
ULONG len;
char* base;
} uv_buf_t;
typedef int uv_file;
typedef SOCKET uv_os_sock_t;
typedef HANDLE uv_os_fd_t;
typedef HANDLE uv_thread_t;
typedef HANDLE uv_sem_t;
typedef CRITICAL_SECTION uv_mutex_t;
/* This condition variable implementation is based on the SetEvent solution
* (section 3.2) at http://www.cs.wustl.edu/~schmidt/win32-cv-1.html
* We could not use the SignalObjectAndWait solution (section 3.4) because
* it want the 2nd argument (type uv_mutex_t) of uv_cond_wait() and
* uv_cond_timedwait() to be HANDLEs, but we use CRITICAL_SECTIONs.
*/
typedef union {
CONDITION_VARIABLE cond_var;
struct {
unsigned int waiters_count;
CRITICAL_SECTION waiters_count_lock;
HANDLE signal_event;
HANDLE broadcast_event;
} fallback;
} uv_cond_t;
typedef union {
/* srwlock_ has type SRWLOCK, but not all toolchains define this type in */
/* windows.h. */
SRWLOCK srwlock_;
struct {
uv_mutex_t read_mutex_;
uv_mutex_t write_mutex_;
unsigned int num_readers_;
} fallback_;
} uv_rwlock_t;
typedef struct {
unsigned int n;
unsigned int count;
uv_mutex_t mutex;
uv_sem_t turnstile1;
uv_sem_t turnstile2;
} uv_barrier_t;
typedef struct {
DWORD tls_index;
} uv_key_t;
#define UV_ONCE_INIT { 0, NULL }
typedef struct uv_once_s {
unsigned char ran;
HANDLE event;
} uv_once_t;
/* Platform-specific definitions for uv_spawn support. */
typedef unsigned char uv_uid_t;
typedef unsigned char uv_gid_t;
typedef struct uv__dirent_s {
int d_type;
char d_name[1];
} uv__dirent_t;
#define HAVE_DIRENT_TYPES
#define UV__DT_DIR UV_DIRENT_DIR
#define UV__DT_FILE UV_DIRENT_FILE
#define UV__DT_LINK UV_DIRENT_LINK
#define UV__DT_FIFO UV_DIRENT_FIFO
#define UV__DT_SOCKET UV_DIRENT_SOCKET
#define UV__DT_CHAR UV_DIRENT_CHAR
#define UV__DT_BLOCK UV_DIRENT_BLOCK
/* Platform-specific definitions for uv_dlopen support. */
#define UV_DYNAMIC FAR WINAPI
typedef struct {
HMODULE handle;
char* errmsg;
} uv_lib_t;
RB_HEAD(uv_timer_tree_s, uv_timer_s);
#define UV_LOOP_PRIVATE_FIELDS \
/* The loop's I/O completion port */ \
HANDLE iocp; \
/* The current time according to the event loop. in msecs. */ \
uint64_t time; \
/* Tail of a single-linked circular queue of pending reqs. If the queue */ \
/* is empty, tail_ is NULL. If there is only one item, */ \
/* tail_->next_req == tail_ */ \
uv_req_t* pending_reqs_tail; \
/* Head of a single-linked list of closed handles */ \
uv_handle_t* endgame_handles; \
/* The head of the timers tree */ \
struct uv_timer_tree_s timers; \
/* Lists of active loop (prepare / check / idle) watchers */ \
uv_prepare_t* prepare_handles; \
uv_check_t* check_handles; \
uv_idle_t* idle_handles; \
/* This pointer will refer to the prepare/check/idle handle whose */ \
/* callback is scheduled to be called next. This is needed to allow */ \
/* safe removal from one of the lists above while that list being */ \
/* iterated over. */ \
uv_prepare_t* next_prepare_handle; \
uv_check_t* next_check_handle; \
uv_idle_t* next_idle_handle; \
/* This handle holds the peer sockets for the fast variant of uv_poll_t */ \
SOCKET poll_peer_sockets[UV_MSAFD_PROVIDER_COUNT]; \
/* Counter to keep track of active tcp streams */ \
unsigned int active_tcp_streams; \
/* Counter to keep track of active udp streams */ \
unsigned int active_udp_streams; \
/* Counter to started timer */ \
uint64_t timer_counter; \
/* Threadpool */ \
void* wq[2]; \
uv_mutex_t wq_mutex; \
uv_async_t wq_async;
#define UV_REQ_TYPE_PRIVATE \
/* TODO: remove the req suffix */ \
UV_ACCEPT, \
UV_FS_EVENT_REQ, \
UV_POLL_REQ, \
UV_PROCESS_EXIT, \
UV_READ, \
UV_UDP_RECV, \
UV_WAKEUP, \
UV_SIGNAL_REQ,
#define UV_REQ_PRIVATE_FIELDS \
union { \
/* Used by I/O operations */ \
struct { \
OVERLAPPED overlapped; \
size_t queued_bytes; \
}; \
}; \
struct uv_req_s* next_req;
#define UV_WRITE_PRIVATE_FIELDS \
int ipc_header; \
uv_buf_t write_buffer; \
HANDLE event_handle; \
HANDLE wait_handle;
#define UV_CONNECT_PRIVATE_FIELDS \
/* empty */
#define UV_SHUTDOWN_PRIVATE_FIELDS \
/* empty */
#define UV_UDP_SEND_PRIVATE_FIELDS \
/* empty */
#define UV_PRIVATE_REQ_TYPES \
typedef struct uv_pipe_accept_s { \
UV_REQ_FIELDS \
HANDLE pipeHandle; \
struct uv_pipe_accept_s* next_pending; \
} uv_pipe_accept_t; \
\
typedef struct uv_tcp_accept_s { \
UV_REQ_FIELDS \
SOCKET accept_socket; \
char accept_buffer[sizeof(struct sockaddr_storage) * 2 + 32]; \
HANDLE event_handle; \
HANDLE wait_handle; \
struct uv_tcp_accept_s* next_pending; \
} uv_tcp_accept_t; \
\
typedef struct uv_read_s { \
UV_REQ_FIELDS \
HANDLE event_handle; \
HANDLE wait_handle; \
} uv_read_t;
#define uv_stream_connection_fields \
unsigned int write_reqs_pending; \
uv_shutdown_t* shutdown_req;
#define uv_stream_server_fields \
uv_connection_cb connection_cb;
#define UV_STREAM_PRIVATE_FIELDS \
unsigned int reqs_pending; \
int activecnt; \
uv_read_t read_req; \
union { \
struct { uv_stream_connection_fields }; \
struct { uv_stream_server_fields }; \
};
#define uv_tcp_server_fields \
uv_tcp_accept_t* accept_reqs; \
unsigned int processed_accepts; \
uv_tcp_accept_t* pending_accepts; \
LPFN_ACCEPTEX func_acceptex;
#define uv_tcp_connection_fields \
uv_buf_t read_buffer; \
LPFN_CONNECTEX func_connectex;
#define UV_TCP_PRIVATE_FIELDS \
SOCKET socket; \
int delayed_error; \
union { \
struct { uv_tcp_server_fields }; \
struct { uv_tcp_connection_fields }; \
};
#define UV_UDP_PRIVATE_FIELDS \
SOCKET socket; \
unsigned int reqs_pending; \
int activecnt; \
uv_req_t recv_req; \
uv_buf_t recv_buffer; \
struct sockaddr_storage recv_from; \
int recv_from_len; \
uv_udp_recv_cb recv_cb; \
uv_alloc_cb alloc_cb; \
LPFN_WSARECV func_wsarecv; \
LPFN_WSARECVFROM func_wsarecvfrom;
#define uv_pipe_server_fields \
int pending_instances; \
uv_pipe_accept_t* accept_reqs; \
uv_pipe_accept_t* pending_accepts;
#define uv_pipe_connection_fields \
uv_timer_t* eof_timer; \
uv_write_t ipc_header_write_req; \
int ipc_pid; \
uint64_t remaining_ipc_rawdata_bytes; \
struct { \
void* queue[2]; \
int queue_len; \
} pending_ipc_info; \
uv_write_t* non_overlapped_writes_tail; \
uv_mutex_t readfile_mutex; \
volatile HANDLE readfile_thread;
#define UV_PIPE_PRIVATE_FIELDS \
HANDLE handle; \
WCHAR* name; \
union { \
struct { uv_pipe_server_fields }; \
struct { uv_pipe_connection_fields }; \
};
/* TODO: put the parser states in an union - TTY handles are always */
/* half-duplex so read-state can safely overlap write-state. */
#define UV_TTY_PRIVATE_FIELDS \
HANDLE handle; \
union { \
struct { \
/* Used for readable TTY handles */ \
HANDLE read_line_handle; \
uv_buf_t read_line_buffer; \
HANDLE read_raw_wait; \
/* Fields used for translating win keystrokes into vt100 characters */ \
char last_key[8]; \
unsigned char last_key_offset; \
unsigned char last_key_len; \
WCHAR last_utf16_high_surrogate; \
INPUT_RECORD last_input_record; \
}; \
struct { \
/* Used for writable TTY handles */ \
/* utf8-to-utf16 conversion state */ \
unsigned int utf8_codepoint; \
unsigned char utf8_bytes_left; \
/* eol conversion state */ \
unsigned char previous_eol; \
/* ansi parser state */ \
unsigned char ansi_parser_state; \
unsigned char ansi_csi_argc; \
unsigned short ansi_csi_argv[4]; \
COORD saved_position; \
WORD saved_attributes; \
}; \
};
#define UV_POLL_PRIVATE_FIELDS \
SOCKET socket; \
/* Used in fast mode */ \
SOCKET peer_socket; \
AFD_POLL_INFO afd_poll_info_1; \
AFD_POLL_INFO afd_poll_info_2; \
/* Used in fast and slow mode. */ \
uv_req_t poll_req_1; \
uv_req_t poll_req_2; \
unsigned char submitted_events_1; \
unsigned char submitted_events_2; \
unsigned char mask_events_1; \
unsigned char mask_events_2; \
unsigned char events;
#define UV_TIMER_PRIVATE_FIELDS \
RB_ENTRY(uv_timer_s) tree_entry; \
uint64_t due; \
uint64_t repeat; \
uint64_t start_id; \
uv_timer_cb timer_cb;
#define UV_ASYNC_PRIVATE_FIELDS \
struct uv_req_s async_req; \
uv_async_cb async_cb; \
/* char to avoid alignment issues */ \
char volatile async_sent;
#define UV_PREPARE_PRIVATE_FIELDS \
uv_prepare_t* prepare_prev; \
uv_prepare_t* prepare_next; \
uv_prepare_cb prepare_cb;
#define UV_CHECK_PRIVATE_FIELDS \
uv_check_t* check_prev; \
uv_check_t* check_next; \
uv_check_cb check_cb;
#define UV_IDLE_PRIVATE_FIELDS \
uv_idle_t* idle_prev; \
uv_idle_t* idle_next; \
uv_idle_cb idle_cb;
#define UV_HANDLE_PRIVATE_FIELDS \
uv_handle_t* endgame_next; \
unsigned int flags;
#define UV_GETADDRINFO_PRIVATE_FIELDS \
struct uv__work work_req; \
uv_getaddrinfo_cb getaddrinfo_cb; \
void* alloc; \
WCHAR* node; \
WCHAR* service; \
/* The addrinfoW field is used to store a pointer to the hints, and */ \
/* later on to store the result of GetAddrInfoW. The final result will */ \
/* be converted to struct addrinfo* and stored in the addrinfo field. */ \
struct addrinfoW* addrinfow; \
struct addrinfo* addrinfo; \
int retcode;
#define UV_GETNAMEINFO_PRIVATE_FIELDS \
struct uv__work work_req; \
uv_getnameinfo_cb getnameinfo_cb; \
struct sockaddr_storage storage; \
int flags; \
char host[NI_MAXHOST]; \
char service[NI_MAXSERV]; \
int retcode;
#define UV_PROCESS_PRIVATE_FIELDS \
struct uv_process_exit_s { \
UV_REQ_FIELDS \
} exit_req; \
BYTE* child_stdio_buffer; \
int exit_signal; \
HANDLE wait_handle; \
HANDLE process_handle; \
volatile char exit_cb_pending;
#define UV_FS_PRIVATE_FIELDS \
struct uv__work work_req; \
int flags; \
DWORD sys_errno_; \
union { \
/* TODO: remove me in 0.9. */ \
WCHAR* pathw; \
int fd; \
}; \
union { \
struct { \
int mode; \
WCHAR* new_pathw; \
int file_flags; \
int fd_out; \
unsigned int nbufs; \
uv_buf_t* bufs; \
int64_t offset; \
uv_buf_t bufsml[4]; \
}; \
struct { \
double atime; \
double mtime; \
}; \
};
#define UV_WORK_PRIVATE_FIELDS \
struct uv__work work_req;
#define UV_FS_EVENT_PRIVATE_FIELDS \
struct uv_fs_event_req_s { \
UV_REQ_FIELDS \
} req; \
HANDLE dir_handle; \
int req_pending; \
uv_fs_event_cb cb; \
WCHAR* filew; \
WCHAR* short_filew; \
WCHAR* dirw; \
char* buffer;
#define UV_SIGNAL_PRIVATE_FIELDS \
RB_ENTRY(uv_signal_s) tree_entry; \
struct uv_req_s signal_req; \
unsigned long pending_signum;
int uv_utf16_to_utf8(const WCHAR* utf16Buffer, size_t utf16Size,
char* utf8Buffer, size_t utf8Size);
int uv_utf8_to_utf16(const char* utf8Buffer, WCHAR* utf16Buffer,
size_t utf16Size);
#ifndef F_OK
#define F_OK 0
#endif
#ifndef R_OK
#define R_OK 4
#endif
#ifndef W_OK
#define W_OK 2
#endif
#ifndef X_OK
#define X_OK 1
#endif