/
uv.h
1611 lines (1399 loc) · 57.1 KB
/
uv.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
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/* 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.
*/
/* See https://github.com/libuv/libuv#documentation for documentation. */
#ifndef UV_H
#define UV_H
#ifdef __cplusplus
extern "C" {
#endif
#ifdef _WIN32
/* Windows - set up dll import/export decorators. */
# if defined(BUILDING_UV_SHARED)
/* Building shared library. */
# define UV_EXTERN __declspec(dllexport)
# elif defined(USING_UV_SHARED)
/* Using shared library. */
# define UV_EXTERN __declspec(dllimport)
# else
/* Building static library. */
# define UV_EXTERN /* nothing */
# endif
#elif __GNUC__ >= 4
# define UV_EXTERN __attribute__((visibility("default")))
#else
# define UV_EXTERN /* nothing */
#endif
#include "uv/errno.h"
#include "uv/version.h"
#include <stddef.h>
#include <stdio.h>
#if defined(_MSC_VER) && _MSC_VER < 1600
# include "uv/stdint-msvc2008.h"
#else
# include <stdint.h>
#endif
#if defined(_WIN32)
# include "uv/win.h"
#else
# include "uv/unix.h"
#endif
/* Expand this list if necessary. */
#define UV_ERRNO_MAP(XX) \
XX(E2BIG, "argument list too long") \
XX(EACCES, "permission denied") \
XX(EADDRINUSE, "address already in use") \
XX(EADDRNOTAVAIL, "address not available") \
XX(EAFNOSUPPORT, "address family not supported") \
XX(EAGAIN, "resource temporarily unavailable") \
XX(EAI_ADDRFAMILY, "address family not supported") \
XX(EAI_AGAIN, "temporary failure") \
XX(EAI_BADFLAGS, "bad ai_flags value") \
XX(EAI_BADHINTS, "invalid value for hints") \
XX(EAI_CANCELED, "request canceled") \
XX(EAI_FAIL, "permanent failure") \
XX(EAI_FAMILY, "ai_family not supported") \
XX(EAI_MEMORY, "out of memory") \
XX(EAI_NODATA, "no address") \
XX(EAI_NONAME, "unknown node or service") \
XX(EAI_OVERFLOW, "argument buffer overflow") \
XX(EAI_PROTOCOL, "resolved protocol is unknown") \
XX(EAI_SERVICE, "service not available for socket type") \
XX(EAI_SOCKTYPE, "socket type not supported") \
XX(EALREADY, "connection already in progress") \
XX(EBADF, "bad file descriptor") \
XX(EBUSY, "resource busy or locked") \
XX(ECANCELED, "operation canceled") \
XX(ECHARSET, "invalid Unicode character") \
XX(ECONNABORTED, "software caused connection abort") \
XX(ECONNREFUSED, "connection refused") \
XX(ECONNRESET, "connection reset by peer") \
XX(EDESTADDRREQ, "destination address required") \
XX(EEXIST, "file already exists") \
XX(EFAULT, "bad address in system call argument") \
XX(EFBIG, "file too large") \
XX(EHOSTUNREACH, "host is unreachable") \
XX(EINTR, "interrupted system call") \
XX(EINVAL, "invalid argument") \
XX(EIO, "i/o error") \
XX(EISCONN, "socket is already connected") \
XX(EISDIR, "illegal operation on a directory") \
XX(ELOOP, "too many symbolic links encountered") \
XX(EMFILE, "too many open files") \
XX(EMSGSIZE, "message too long") \
XX(ENAMETOOLONG, "name too long") \
XX(ENETDOWN, "network is down") \
XX(ENETUNREACH, "network is unreachable") \
XX(ENFILE, "file table overflow") \
XX(ENOBUFS, "no buffer space available") \
XX(ENODEV, "no such device") \
XX(ENOENT, "no such file or directory") \
XX(ENOMEM, "not enough memory") \
XX(ENONET, "machine is not on the network") \
XX(ENOPROTOOPT, "protocol not available") \
XX(ENOSPC, "no space left on device") \
XX(ENOSYS, "function not implemented") \
XX(ENOTCONN, "socket is not connected") \
XX(ENOTDIR, "not a directory") \
XX(ENOTEMPTY, "directory not empty") \
XX(ENOTSOCK, "socket operation on non-socket") \
XX(ENOTSUP, "operation not supported on socket") \
XX(EPERM, "operation not permitted") \
XX(EPIPE, "broken pipe") \
XX(EPROTO, "protocol error") \
XX(EPROTONOSUPPORT, "protocol not supported") \
XX(EPROTOTYPE, "protocol wrong type for socket") \
XX(ERANGE, "result too large") \
XX(EROFS, "read-only file system") \
XX(ESHUTDOWN, "cannot send after transport endpoint shutdown") \
XX(ESPIPE, "invalid seek") \
XX(ESRCH, "no such process") \
XX(ETIMEDOUT, "connection timed out") \
XX(ETXTBSY, "text file is busy") \
XX(EXDEV, "cross-device link not permitted") \
XX(UNKNOWN, "unknown error") \
XX(EOF, "end of file") \
XX(ENXIO, "no such device or address") \
XX(EMLINK, "too many links") \
XX(EHOSTDOWN, "host is down") \
XX(EREMOTEIO, "remote I/O error") \
XX(ENOTTY, "inappropriate ioctl for device") \
XX(EFTYPE, "inappropriate file type or format") \
#define UV_HANDLE_TYPE_MAP(XX) \
XX(ASYNC, async) \
XX(CHECK, check) \
XX(FS_EVENT, fs_event) \
XX(FS_POLL, fs_poll) \
XX(HANDLE, handle) \
XX(IDLE, idle) \
XX(NAMED_PIPE, pipe) \
XX(POLL, poll) \
XX(PREPARE, prepare) \
XX(PROCESS, process) \
XX(STREAM, stream) \
XX(TCP, tcp) \
XX(TIMER, timer) \
XX(TTY, tty) \
XX(UDP, udp) \
XX(SIGNAL, signal) \
#define UV_REQ_TYPE_MAP(XX) \
XX(REQ, req) \
XX(CONNECT, connect) \
XX(WRITE, write) \
XX(SHUTDOWN, shutdown) \
XX(UDP_SEND, udp_send) \
XX(FS, fs) \
XX(WORK, work) \
XX(GETADDRINFO, getaddrinfo) \
XX(GETNAMEINFO, getnameinfo) \
typedef enum {
#define XX(code, _) UV_ ## code = UV__ ## code,
UV_ERRNO_MAP(XX)
#undef XX
UV_ERRNO_MAX = UV__EOF - 1
} uv_errno_t;
typedef enum {
UV_UNKNOWN_HANDLE = 0,
#define XX(uc, lc) UV_##uc,
UV_HANDLE_TYPE_MAP(XX)
#undef XX
UV_FILE,
UV_HANDLE_TYPE_MAX
} uv_handle_type;
typedef enum {
UV_UNKNOWN_REQ = 0,
#define XX(uc, lc) UV_##uc,
UV_REQ_TYPE_MAP(XX)
#undef XX
UV_REQ_TYPE_PRIVATE
UV_REQ_TYPE_MAX
} uv_req_type;
/* Handle types. */
typedef struct uv_loop_s uv_loop_t;
typedef struct uv_handle_s uv_handle_t;
typedef struct uv_stream_s uv_stream_t;
typedef struct uv_tcp_s uv_tcp_t;
typedef struct uv_udp_s uv_udp_t;
typedef struct uv_pipe_s uv_pipe_t;
typedef struct uv_tty_s uv_tty_t;
typedef struct uv_poll_s uv_poll_t;
typedef struct uv_timer_s uv_timer_t;
typedef struct uv_prepare_s uv_prepare_t;
typedef struct uv_check_s uv_check_t;
typedef struct uv_idle_s uv_idle_t;
typedef struct uv_async_s uv_async_t;
typedef struct uv_process_s uv_process_t;
typedef struct uv_fs_event_s uv_fs_event_t;
typedef struct uv_fs_poll_s uv_fs_poll_t;
typedef struct uv_signal_s uv_signal_t;
/* Request types. */
typedef struct uv_req_s uv_req_t;
typedef struct uv_getaddrinfo_s uv_getaddrinfo_t;
typedef struct uv_getnameinfo_s uv_getnameinfo_t;
typedef struct uv_shutdown_s uv_shutdown_t;
typedef struct uv_write_s uv_write_t;
typedef struct uv_connect_s uv_connect_t;
typedef struct uv_udp_send_s uv_udp_send_t;
typedef struct uv_fs_s uv_fs_t;
typedef struct uv_work_s uv_work_t;
/* None of the above. */
typedef struct uv_cpu_info_s uv_cpu_info_t;
typedef struct uv_interface_address_s uv_interface_address_t;
typedef struct uv_dirent_s uv_dirent_t;
typedef struct uv_passwd_s uv_passwd_t;
typedef enum {
UV_LOOP_BLOCK_SIGNAL
} uv_loop_option;
typedef enum {
UV_RUN_DEFAULT = 0,
UV_RUN_ONCE,
UV_RUN_NOWAIT
} uv_run_mode;
UV_EXTERN unsigned int uv_version(void);
UV_EXTERN const char* uv_version_string(void);
typedef void* (*uv_malloc_func)(size_t size);
typedef void* (*uv_realloc_func)(void* ptr, size_t size);
typedef void* (*uv_calloc_func)(size_t count, size_t size);
typedef void (*uv_free_func)(void* ptr);
UV_EXTERN int uv_replace_allocator(uv_malloc_func malloc_func,
uv_realloc_func realloc_func,
uv_calloc_func calloc_func,
uv_free_func free_func);
UV_EXTERN uv_loop_t* uv_default_loop(void);
UV_EXTERN int uv_loop_init(uv_loop_t* loop);
UV_EXTERN int uv_loop_close(uv_loop_t* loop);
/*
* NOTE:
* This function is DEPRECATED (to be removed after 0.12), users should
* allocate the loop manually and use uv_loop_init instead.
*/
UV_EXTERN uv_loop_t* uv_loop_new(void);
/*
* NOTE:
* This function is DEPRECATED (to be removed after 0.12). Users should use
* uv_loop_close and free the memory manually instead.
*/
UV_EXTERN void uv_loop_delete(uv_loop_t*);
UV_EXTERN size_t uv_loop_size(void);
UV_EXTERN int uv_loop_alive(const uv_loop_t* loop);
UV_EXTERN int uv_loop_configure(uv_loop_t* loop, uv_loop_option option, ...);
UV_EXTERN int uv_loop_fork(uv_loop_t* loop);
UV_EXTERN int uv_run(uv_loop_t*, uv_run_mode mode);
UV_EXTERN void uv_stop(uv_loop_t*);
UV_EXTERN void uv_ref(uv_handle_t*);
UV_EXTERN void uv_unref(uv_handle_t*);
UV_EXTERN int uv_has_ref(const uv_handle_t*);
UV_EXTERN void uv_update_time(uv_loop_t*);
UV_EXTERN uint64_t uv_now(const uv_loop_t*);
UV_EXTERN int uv_backend_fd(const uv_loop_t*);
UV_EXTERN int uv_backend_timeout(const uv_loop_t*);
typedef void (*uv_alloc_cb)(uv_handle_t* handle,
size_t suggested_size,
uv_buf_t* buf);
typedef void (*uv_read_cb)(uv_stream_t* stream,
ssize_t nread,
const uv_buf_t* buf);
typedef void (*uv_write_cb)(uv_write_t* req, int status);
typedef void (*uv_connect_cb)(uv_connect_t* req, int status);
typedef void (*uv_shutdown_cb)(uv_shutdown_t* req, int status);
typedef void (*uv_connection_cb)(uv_stream_t* server, int status);
typedef void (*uv_close_cb)(uv_handle_t* handle);
typedef void (*uv_poll_cb)(uv_poll_t* handle, int status, int events);
typedef void (*uv_timer_cb)(uv_timer_t* handle);
typedef void (*uv_async_cb)(uv_async_t* handle);
typedef void (*uv_prepare_cb)(uv_prepare_t* handle);
typedef void (*uv_check_cb)(uv_check_t* handle);
typedef void (*uv_idle_cb)(uv_idle_t* handle);
typedef void (*uv_exit_cb)(uv_process_t*, int64_t exit_status, int term_signal);
typedef void (*uv_walk_cb)(uv_handle_t* handle, void* arg);
typedef void (*uv_fs_cb)(uv_fs_t* req);
typedef void (*uv_work_cb)(uv_work_t* req);
typedef void (*uv_after_work_cb)(uv_work_t* req, int status);
typedef void (*uv_getaddrinfo_cb)(uv_getaddrinfo_t* req,
int status,
struct addrinfo* res);
typedef void (*uv_getnameinfo_cb)(uv_getnameinfo_t* req,
int status,
const char* hostname,
const char* service);
typedef struct {
long tv_sec;
long tv_nsec;
} uv_timespec_t;
typedef struct {
uint64_t st_dev;
uint64_t st_mode;
uint64_t st_nlink;
uint64_t st_uid;
uint64_t st_gid;
uint64_t st_rdev;
uint64_t st_ino;
uint64_t st_size;
uint64_t st_blksize;
uint64_t st_blocks;
uint64_t st_flags;
uint64_t st_gen;
uv_timespec_t st_atim;
uv_timespec_t st_mtim;
uv_timespec_t st_ctim;
uv_timespec_t st_birthtim;
} uv_stat_t;
typedef void (*uv_fs_event_cb)(uv_fs_event_t* handle,
const char* filename,
int events,
int status);
typedef void (*uv_fs_poll_cb)(uv_fs_poll_t* handle,
int status,
const uv_stat_t* prev,
const uv_stat_t* curr);
typedef void (*uv_signal_cb)(uv_signal_t* handle, int signum);
typedef enum {
UV_LEAVE_GROUP = 0,
UV_JOIN_GROUP
} uv_membership;
UV_EXTERN int uv_translate_sys_error(int sys_errno);
UV_EXTERN const char* uv_strerror(int err);
UV_EXTERN char* uv_strerror_r(int err, char* buf, size_t buflen);
UV_EXTERN const char* uv_err_name(int err);
UV_EXTERN char* uv_err_name_r(int err, char* buf, size_t buflen);
#define UV_REQ_FIELDS \
/* public */ \
void* data; \
/* read-only */ \
uv_req_type type; \
/* private */ \
void* reserved[6]; \
UV_REQ_PRIVATE_FIELDS \
/* Abstract base class of all requests. */
struct uv_req_s {
UV_REQ_FIELDS
};
/* Platform-specific request types. */
UV_PRIVATE_REQ_TYPES
UV_EXTERN int uv_shutdown(uv_shutdown_t* req,
uv_stream_t* handle,
uv_shutdown_cb cb);
struct uv_shutdown_s {
UV_REQ_FIELDS
uv_stream_t* handle;
uv_shutdown_cb cb;
UV_SHUTDOWN_PRIVATE_FIELDS
};
#define UV_HANDLE_FIELDS \
/* public */ \
void* data; \
/* read-only */ \
uv_loop_t* loop; \
uv_handle_type type; \
/* private */ \
uv_close_cb close_cb; \
void* handle_queue[2]; \
union { \
int fd; \
void* reserved[4]; \
} u; \
UV_HANDLE_PRIVATE_FIELDS \
/* The abstract base class of all handles. */
struct uv_handle_s {
UV_HANDLE_FIELDS
};
UV_EXTERN size_t uv_handle_size(uv_handle_type type);
UV_EXTERN uv_handle_type uv_handle_get_type(const uv_handle_t* handle);
UV_EXTERN const char* uv_handle_type_name(uv_handle_type type);
UV_EXTERN void* uv_handle_get_data(const uv_handle_t* handle);
UV_EXTERN uv_loop_t* uv_handle_get_loop(const uv_handle_t* handle);
UV_EXTERN void uv_handle_set_data(uv_handle_t* handle, void* data);
UV_EXTERN size_t uv_req_size(uv_req_type type);
UV_EXTERN void* uv_req_get_data(const uv_req_t* req);
UV_EXTERN void uv_req_set_data(uv_req_t* req, void* data);
UV_EXTERN uv_req_type uv_req_get_type(const uv_req_t* req);
UV_EXTERN const char* uv_req_type_name(uv_req_type type);
UV_EXTERN int uv_is_active(const uv_handle_t* handle);
UV_EXTERN void uv_walk(uv_loop_t* loop, uv_walk_cb walk_cb, void* arg);
/* Helpers for ad hoc debugging, no API/ABI stability guaranteed. */
UV_EXTERN void uv_print_all_handles(uv_loop_t* loop, FILE* stream);
UV_EXTERN void uv_print_active_handles(uv_loop_t* loop, FILE* stream);
UV_EXTERN void uv_close(uv_handle_t* handle, uv_close_cb close_cb);
UV_EXTERN int uv_send_buffer_size(uv_handle_t* handle, int* value);
UV_EXTERN int uv_recv_buffer_size(uv_handle_t* handle, int* value);
UV_EXTERN int uv_fileno(const uv_handle_t* handle, uv_os_fd_t* fd);
UV_EXTERN uv_buf_t uv_buf_init(char* base, unsigned int len);
#define UV_STREAM_FIELDS \
/* number of bytes queued for writing */ \
size_t write_queue_size; \
uv_alloc_cb alloc_cb; \
uv_read_cb read_cb; \
/* private */ \
UV_STREAM_PRIVATE_FIELDS
/*
* uv_stream_t is a subclass of uv_handle_t.
*
* uv_stream is an abstract class.
*
* uv_stream_t is the parent class of uv_tcp_t, uv_pipe_t and uv_tty_t.
*/
struct uv_stream_s {
UV_HANDLE_FIELDS
UV_STREAM_FIELDS
};
UV_EXTERN size_t uv_stream_get_write_queue_size(const uv_stream_t* stream);
UV_EXTERN int uv_listen(uv_stream_t* stream, int backlog, uv_connection_cb cb);
UV_EXTERN int uv_accept(uv_stream_t* server, uv_stream_t* client);
UV_EXTERN int uv_read_start(uv_stream_t*,
uv_alloc_cb alloc_cb,
uv_read_cb read_cb);
UV_EXTERN int uv_read_stop(uv_stream_t*);
UV_EXTERN int uv_write(uv_write_t* req,
uv_stream_t* handle,
const uv_buf_t bufs[],
unsigned int nbufs,
uv_write_cb cb);
UV_EXTERN int uv_write2(uv_write_t* req,
uv_stream_t* handle,
const uv_buf_t bufs[],
unsigned int nbufs,
uv_stream_t* send_handle,
uv_write_cb cb);
UV_EXTERN int uv_try_write(uv_stream_t* handle,
const uv_buf_t bufs[],
unsigned int nbufs);
/* uv_write_t is a subclass of uv_req_t. */
struct uv_write_s {
UV_REQ_FIELDS
uv_write_cb cb;
uv_stream_t* send_handle; /* TODO: make private and unix-only in v2.x. */
uv_stream_t* handle;
UV_WRITE_PRIVATE_FIELDS
};
UV_EXTERN int uv_is_readable(const uv_stream_t* handle);
UV_EXTERN int uv_is_writable(const uv_stream_t* handle);
UV_EXTERN int uv_stream_set_blocking(uv_stream_t* handle, int blocking);
UV_EXTERN int uv_is_closing(const uv_handle_t* handle);
/*
* uv_tcp_t is a subclass of uv_stream_t.
*
* Represents a TCP stream or TCP server.
*/
struct uv_tcp_s {
UV_HANDLE_FIELDS
UV_STREAM_FIELDS
UV_TCP_PRIVATE_FIELDS
};
UV_EXTERN int uv_tcp_init(uv_loop_t*, uv_tcp_t* handle);
UV_EXTERN int uv_tcp_init_ex(uv_loop_t*, uv_tcp_t* handle, unsigned int flags);
UV_EXTERN int uv_tcp_open(uv_tcp_t* handle, uv_os_sock_t sock);
UV_EXTERN int uv_tcp_nodelay(uv_tcp_t* handle, int enable);
UV_EXTERN int uv_tcp_keepalive(uv_tcp_t* handle,
int enable,
unsigned int delay);
UV_EXTERN int uv_tcp_simultaneous_accepts(uv_tcp_t* handle, int enable);
enum uv_tcp_flags {
/* Used with uv_tcp_bind, when an IPv6 address is used. */
UV_TCP_IPV6ONLY = 1
};
UV_EXTERN int uv_tcp_bind(uv_tcp_t* handle,
const struct sockaddr* addr,
unsigned int flags);
UV_EXTERN int uv_tcp_getsockname(const uv_tcp_t* handle,
struct sockaddr* name,
int* namelen);
UV_EXTERN int uv_tcp_getpeername(const uv_tcp_t* handle,
struct sockaddr* name,
int* namelen);
UV_EXTERN int uv_tcp_connect(uv_connect_t* req,
uv_tcp_t* handle,
const struct sockaddr* addr,
uv_connect_cb cb);
/* uv_connect_t is a subclass of uv_req_t. */
struct uv_connect_s {
UV_REQ_FIELDS
uv_connect_cb cb;
uv_stream_t* handle;
UV_CONNECT_PRIVATE_FIELDS
};
/*
* UDP support.
*/
enum uv_udp_flags {
/* Disables dual stack mode. */
UV_UDP_IPV6ONLY = 1,
/*
* Indicates message was truncated because read buffer was too small. The
* remainder was discarded by the OS. Used in uv_udp_recv_cb.
*/
UV_UDP_PARTIAL = 2,
/*
* Indicates if SO_REUSEADDR will be set when binding the handle.
* This sets the SO_REUSEPORT socket flag on the BSDs and OS X. On other
* Unix platforms, it sets the SO_REUSEADDR flag. What that means is that
* multiple threads or processes can bind to the same address without error
* (provided they all set the flag) but only the last one to bind will receive
* any traffic, in effect "stealing" the port from the previous listener.
*/
UV_UDP_REUSEADDR = 4
};
typedef void (*uv_udp_send_cb)(uv_udp_send_t* req, int status);
typedef void (*uv_udp_recv_cb)(uv_udp_t* handle,
ssize_t nread,
const uv_buf_t* buf,
const struct sockaddr* addr,
unsigned flags);
/* uv_udp_t is a subclass of uv_handle_t. */
struct uv_udp_s {
UV_HANDLE_FIELDS
/* read-only */
/*
* Number of bytes queued for sending. This field strictly shows how much
* information is currently queued.
*/
size_t send_queue_size;
/*
* Number of send requests currently in the queue awaiting to be processed.
*/
size_t send_queue_count;
UV_UDP_PRIVATE_FIELDS
};
/* uv_udp_send_t is a subclass of uv_req_t. */
struct uv_udp_send_s {
UV_REQ_FIELDS
uv_udp_t* handle;
uv_udp_send_cb cb;
UV_UDP_SEND_PRIVATE_FIELDS
};
UV_EXTERN int uv_udp_init(uv_loop_t*, uv_udp_t* handle);
UV_EXTERN int uv_udp_init_ex(uv_loop_t*, uv_udp_t* handle, unsigned int flags);
UV_EXTERN int uv_udp_open(uv_udp_t* handle, uv_os_sock_t sock);
UV_EXTERN int uv_udp_bind(uv_udp_t* handle,
const struct sockaddr* addr,
unsigned int flags);
UV_EXTERN int uv_udp_getsockname(const uv_udp_t* handle,
struct sockaddr* name,
int* namelen);
UV_EXTERN int uv_udp_set_membership(uv_udp_t* handle,
const char* multicast_addr,
const char* interface_addr,
uv_membership membership);
UV_EXTERN int uv_udp_set_multicast_loop(uv_udp_t* handle, int on);
UV_EXTERN int uv_udp_set_multicast_ttl(uv_udp_t* handle, int ttl);
UV_EXTERN int uv_udp_set_multicast_interface(uv_udp_t* handle,
const char* interface_addr);
UV_EXTERN int uv_udp_set_broadcast(uv_udp_t* handle, int on);
UV_EXTERN int uv_udp_set_ttl(uv_udp_t* handle, int ttl);
UV_EXTERN int uv_udp_send(uv_udp_send_t* req,
uv_udp_t* handle,
const uv_buf_t bufs[],
unsigned int nbufs,
const struct sockaddr* addr,
uv_udp_send_cb send_cb);
UV_EXTERN int uv_udp_try_send(uv_udp_t* handle,
const uv_buf_t bufs[],
unsigned int nbufs,
const struct sockaddr* addr);
UV_EXTERN int uv_udp_recv_start(uv_udp_t* handle,
uv_alloc_cb alloc_cb,
uv_udp_recv_cb recv_cb);
UV_EXTERN int uv_udp_recv_stop(uv_udp_t* handle);
UV_EXTERN size_t uv_udp_get_send_queue_size(const uv_udp_t* handle);
UV_EXTERN size_t uv_udp_get_send_queue_count(const uv_udp_t* handle);
/*
* uv_tty_t is a subclass of uv_stream_t.
*
* Representing a stream for the console.
*/
struct uv_tty_s {
UV_HANDLE_FIELDS
UV_STREAM_FIELDS
UV_TTY_PRIVATE_FIELDS
};
typedef enum {
/* Initial/normal terminal mode */
UV_TTY_MODE_NORMAL,
/* Raw input mode (On Windows, ENABLE_WINDOW_INPUT is also enabled) */
UV_TTY_MODE_RAW,
/* Binary-safe I/O mode for IPC (Unix-only) */
UV_TTY_MODE_IO
} uv_tty_mode_t;
UV_EXTERN int uv_tty_init(uv_loop_t*, uv_tty_t*, uv_file fd, int readable);
UV_EXTERN int uv_tty_set_mode(uv_tty_t*, uv_tty_mode_t mode);
UV_EXTERN int uv_tty_reset_mode(void);
UV_EXTERN int uv_tty_get_winsize(uv_tty_t*, int* width, int* height);
#ifdef __cplusplus
extern "C++" {
inline int uv_tty_set_mode(uv_tty_t* handle, int mode) {
return uv_tty_set_mode(handle, static_cast<uv_tty_mode_t>(mode));
}
}
#endif
UV_EXTERN uv_handle_type uv_guess_handle(uv_file file);
/*
* uv_pipe_t is a subclass of uv_stream_t.
*
* Representing a pipe stream or pipe server. On Windows this is a Named
* Pipe. On Unix this is a Unix domain socket.
*/
struct uv_pipe_s {
UV_HANDLE_FIELDS
UV_STREAM_FIELDS
int ipc; /* non-zero if this pipe is used for passing handles */
UV_PIPE_PRIVATE_FIELDS
};
UV_EXTERN int uv_pipe_init(uv_loop_t*, uv_pipe_t* handle, int ipc);
UV_EXTERN int uv_pipe_open(uv_pipe_t*, uv_file file);
UV_EXTERN int uv_pipe_bind(uv_pipe_t* handle, const char* name);
UV_EXTERN void uv_pipe_connect(uv_connect_t* req,
uv_pipe_t* handle,
const char* name,
uv_connect_cb cb);
UV_EXTERN int uv_pipe_getsockname(const uv_pipe_t* handle,
char* buffer,
size_t* size);
UV_EXTERN int uv_pipe_getpeername(const uv_pipe_t* handle,
char* buffer,
size_t* size);
UV_EXTERN void uv_pipe_pending_instances(uv_pipe_t* handle, int count);
UV_EXTERN int uv_pipe_pending_count(uv_pipe_t* handle);
UV_EXTERN uv_handle_type uv_pipe_pending_type(uv_pipe_t* handle);
UV_EXTERN int uv_pipe_chmod(uv_pipe_t* handle, int flags);
struct uv_poll_s {
UV_HANDLE_FIELDS
uv_poll_cb poll_cb;
UV_POLL_PRIVATE_FIELDS
};
enum uv_poll_event {
UV_READABLE = 1,
UV_WRITABLE = 2,
UV_DISCONNECT = 4,
UV_PRIORITIZED = 8
};
UV_EXTERN int uv_poll_init(uv_loop_t* loop, uv_poll_t* handle, int fd);
UV_EXTERN int uv_poll_init_socket(uv_loop_t* loop,
uv_poll_t* handle,
uv_os_sock_t socket);
UV_EXTERN int uv_poll_start(uv_poll_t* handle, int events, uv_poll_cb cb);
UV_EXTERN int uv_poll_stop(uv_poll_t* handle);
struct uv_prepare_s {
UV_HANDLE_FIELDS
UV_PREPARE_PRIVATE_FIELDS
};
UV_EXTERN int uv_prepare_init(uv_loop_t*, uv_prepare_t* prepare);
UV_EXTERN int uv_prepare_start(uv_prepare_t* prepare, uv_prepare_cb cb);
UV_EXTERN int uv_prepare_stop(uv_prepare_t* prepare);
struct uv_check_s {
UV_HANDLE_FIELDS
UV_CHECK_PRIVATE_FIELDS
};
UV_EXTERN int uv_check_init(uv_loop_t*, uv_check_t* check);
UV_EXTERN int uv_check_start(uv_check_t* check, uv_check_cb cb);
UV_EXTERN int uv_check_stop(uv_check_t* check);
struct uv_idle_s {
UV_HANDLE_FIELDS
UV_IDLE_PRIVATE_FIELDS
};
UV_EXTERN int uv_idle_init(uv_loop_t*, uv_idle_t* idle);
UV_EXTERN int uv_idle_start(uv_idle_t* idle, uv_idle_cb cb);
UV_EXTERN int uv_idle_stop(uv_idle_t* idle);
struct uv_async_s {
UV_HANDLE_FIELDS
UV_ASYNC_PRIVATE_FIELDS
};
UV_EXTERN int uv_async_init(uv_loop_t*,
uv_async_t* async,
uv_async_cb async_cb);
UV_EXTERN int uv_async_send(uv_async_t* async);
/*
* uv_timer_t is a subclass of uv_handle_t.
*
* Used to get woken up at a specified time in the future.
*/
struct uv_timer_s {
UV_HANDLE_FIELDS
UV_TIMER_PRIVATE_FIELDS
};
UV_EXTERN int uv_timer_init(uv_loop_t*, uv_timer_t* handle);
UV_EXTERN int uv_timer_start(uv_timer_t* handle,
uv_timer_cb cb,
uint64_t timeout,
uint64_t repeat);
UV_EXTERN int uv_timer_stop(uv_timer_t* handle);
UV_EXTERN int uv_timer_again(uv_timer_t* handle);
UV_EXTERN void uv_timer_set_repeat(uv_timer_t* handle, uint64_t repeat);
UV_EXTERN uint64_t uv_timer_get_repeat(const uv_timer_t* handle);
/*
* uv_getaddrinfo_t is a subclass of uv_req_t.
*
* Request object for uv_getaddrinfo.
*/
struct uv_getaddrinfo_s {
UV_REQ_FIELDS
/* read-only */
uv_loop_t* loop;
/* struct addrinfo* addrinfo is marked as private, but it really isn't. */
UV_GETADDRINFO_PRIVATE_FIELDS
};
UV_EXTERN int uv_getaddrinfo(uv_loop_t* loop,
uv_getaddrinfo_t* req,
uv_getaddrinfo_cb getaddrinfo_cb,
const char* node,
const char* service,
const struct addrinfo* hints);
UV_EXTERN void uv_freeaddrinfo(struct addrinfo* ai);
/*
* uv_getnameinfo_t is a subclass of uv_req_t.
*
* Request object for uv_getnameinfo.
*/
struct uv_getnameinfo_s {
UV_REQ_FIELDS
/* read-only */
uv_loop_t* loop;
/* host and service are marked as private, but they really aren't. */
UV_GETNAMEINFO_PRIVATE_FIELDS
};
UV_EXTERN int uv_getnameinfo(uv_loop_t* loop,
uv_getnameinfo_t* req,
uv_getnameinfo_cb getnameinfo_cb,
const struct sockaddr* addr,
int flags);
/* uv_spawn() options. */
typedef enum {
UV_IGNORE = 0x00,
UV_CREATE_PIPE = 0x01,
UV_INHERIT_FD = 0x02,
UV_INHERIT_STREAM = 0x04,
/*
* When UV_CREATE_PIPE is specified, UV_READABLE_PIPE and UV_WRITABLE_PIPE
* determine the direction of flow, from the child process' perspective. Both
* flags may be specified to create a duplex data stream.
*/
UV_READABLE_PIPE = 0x10,
UV_WRITABLE_PIPE = 0x20,
/*
* Open the child pipe handle in overlapped mode on Windows.
* On Unix it is silently ignored.
*/
UV_OVERLAPPED_PIPE = 0x40
} uv_stdio_flags;
typedef struct uv_stdio_container_s {
uv_stdio_flags flags;
union {
uv_stream_t* stream;
int fd;
} data;
} uv_stdio_container_t;
typedef struct uv_process_options_s {
uv_exit_cb exit_cb; /* Called after the process exits. */
const char* file; /* Path to program to execute. */
/*
* Command line arguments. args[0] should be the path to the program. On
* Windows this uses CreateProcess which concatenates the arguments into a
* string this can cause some strange errors. See the note at
* windows_verbatim_arguments.
*/
char** args;
/*
* This will be set as the environ variable in the subprocess. If this is
* NULL then the parents environ will be used.
*/
char** env;
/*
* If non-null this represents a directory the subprocess should execute
* in. Stands for current working directory.
*/
const char* cwd;
/*
* Various flags that control how uv_spawn() behaves. See the definition of
* `enum uv_process_flags` below.
*/
unsigned int flags;
/*
* The `stdio` field points to an array of uv_stdio_container_t structs that
* describe the file descriptors that will be made available to the child
* process. The convention is that stdio[0] points to stdin, fd 1 is used for
* stdout, and fd 2 is stderr.
*
* Note that on windows file descriptors greater than 2 are available to the
* child process only if the child processes uses the MSVCRT runtime.
*/
int stdio_count;
uv_stdio_container_t* stdio;
/*
* Libuv can change the child process' user/group id. This happens only when
* the appropriate bits are set in the flags fields. This is not supported on
* windows; uv_spawn() will fail and set the error to UV_ENOTSUP.
*/
uv_uid_t uid;
uv_gid_t gid;
} uv_process_options_t;
/*
* These are the flags that can be used for the uv_process_options.flags field.
*/
enum uv_process_flags {
/*
* Set the child process' user id. The user id is supplied in the `uid` field
* of the options struct. This does not work on windows; setting this flag
* will cause uv_spawn() to fail.
*/
UV_PROCESS_SETUID = (1 << 0),
/*
* Set the child process' group id. The user id is supplied in the `gid`
* field of the options struct. This does not work on windows; setting this
* flag will cause uv_spawn() to fail.
*/
UV_PROCESS_SETGID = (1 << 1),
/*
* Do not wrap any arguments in quotes, or perform any other escaping, when
* converting the argument list into a command line string. This option is
* only meaningful on Windows systems. On Unix it is silently ignored.
*/
UV_PROCESS_WINDOWS_VERBATIM_ARGUMENTS = (1 << 2),
/*
* Spawn the child process in a detached state - this will make it a process
* group leader, and will effectively enable the child to keep running after
* the parent exits. Note that the child process will still keep the
* parent's event loop alive unless the parent process calls uv_unref() on
* the child's process handle.
*/
UV_PROCESS_DETACHED = (1 << 3),
/*
* Hide the subprocess console window that would normally be created. This
* option is only meaningful on Windows systems. On Unix it is silently
* ignored.
*/
UV_PROCESS_WINDOWS_HIDE = (1 << 4)
};
/*
* uv_process_t is a subclass of uv_handle_t.
*/
struct uv_process_s {
UV_HANDLE_FIELDS
uv_exit_cb exit_cb;
int pid;
UV_PROCESS_PRIVATE_FIELDS
};
UV_EXTERN int uv_spawn(uv_loop_t* loop,
uv_process_t* handle,
const uv_process_options_t* options);
UV_EXTERN int uv_process_kill(uv_process_t*, int signum);
UV_EXTERN int uv_kill(int pid, int signum);
UV_EXTERN uv_pid_t uv_process_get_pid(const uv_process_t*);
/*
* uv_work_t is a subclass of uv_req_t.
*/
struct uv_work_s {
UV_REQ_FIELDS
uv_loop_t* loop;
uv_work_cb work_cb;
uv_after_work_cb after_work_cb;
UV_WORK_PRIVATE_FIELDS
};