libuv (1.47.0)
1 /* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
2 *
3 * Permission is hereby granted, free of charge, to any person obtaining a copy
4 * of this software and associated documentation files (the "Software"), to
5 * deal in the Software without restriction, including without limitation the
6 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
7 * sell copies of the Software, and to permit persons to whom the Software is
8 * furnished to do so, subject to the following conditions:
9 *
10 * The above copyright notice and this permission notice shall be included in
11 * all copies or substantial portions of the Software.
12 *
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
18 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
19 * IN THE SOFTWARE.
20 */
21
22 /* See https://github.com/libuv/libuv#documentation for documentation. */
23
24 #ifndef UV_H
25 #define UV_H
26 #ifdef __cplusplus
27 extern "C" {
28 #endif
29
30 #if defined(BUILDING_UV_SHARED) && defined(USING_UV_SHARED)
31 #error "Define either BUILDING_UV_SHARED or USING_UV_SHARED, not both."
32 #endif
33
34 #ifndef UV_EXTERN
35 #ifdef _WIN32
36 /* Windows - set up dll import/export decorators. */
37 # if defined(BUILDING_UV_SHARED)
38 /* Building shared library. */
39 # define UV_EXTERN __declspec(dllexport)
40 # elif defined(USING_UV_SHARED)
41 /* Using shared library. */
42 # define UV_EXTERN __declspec(dllimport)
43 # else
44 /* Building static library. */
45 # define UV_EXTERN /* nothing */
46 # endif
47 #elif __GNUC__ >= 4
48 # define UV_EXTERN __attribute__((visibility("default")))
49 #elif defined(__SUNPRO_C) && (__SUNPRO_C >= 0x550) /* Sun Studio >= 8 */
50 # define UV_EXTERN __global
51 #else
52 # define UV_EXTERN /* nothing */
53 #endif
54 #endif /* UV_EXTERN */
55
56 #include "uv/errno.h"
57 #include "uv/version.h"
58 #include <stddef.h>
59 #include <stdio.h>
60 #include <stdint.h>
61
62 /* Internal type, do not use. */
63 struct uv__queue {
64 struct uv__queue* next;
65 struct uv__queue* prev;
66 };
67
68 #if defined(_WIN32)
69 # include "uv/win.h"
70 #else
71 # include "uv/unix.h"
72 #endif
73
74 /* Expand this list if necessary. */
75 #define UV_ERRNO_MAP(XX) \
76 XX(E2BIG, "argument list too long") \
77 XX(EACCES, "permission denied") \
78 XX(EADDRINUSE, "address already in use") \
79 XX(EADDRNOTAVAIL, "address not available") \
80 XX(EAFNOSUPPORT, "address family not supported") \
81 XX(EAGAIN, "resource temporarily unavailable") \
82 XX(EAI_ADDRFAMILY, "address family not supported") \
83 XX(EAI_AGAIN, "temporary failure") \
84 XX(EAI_BADFLAGS, "bad ai_flags value") \
85 XX(EAI_BADHINTS, "invalid value for hints") \
86 XX(EAI_CANCELED, "request canceled") \
87 XX(EAI_FAIL, "permanent failure") \
88 XX(EAI_FAMILY, "ai_family not supported") \
89 XX(EAI_MEMORY, "out of memory") \
90 XX(EAI_NODATA, "no address") \
91 XX(EAI_NONAME, "unknown node or service") \
92 XX(EAI_OVERFLOW, "argument buffer overflow") \
93 XX(EAI_PROTOCOL, "resolved protocol is unknown") \
94 XX(EAI_SERVICE, "service not available for socket type") \
95 XX(EAI_SOCKTYPE, "socket type not supported") \
96 XX(EALREADY, "connection already in progress") \
97 XX(EBADF, "bad file descriptor") \
98 XX(EBUSY, "resource busy or locked") \
99 XX(ECANCELED, "operation canceled") \
100 XX(ECHARSET, "invalid Unicode character") \
101 XX(ECONNABORTED, "software caused connection abort") \
102 XX(ECONNREFUSED, "connection refused") \
103 XX(ECONNRESET, "connection reset by peer") \
104 XX(EDESTADDRREQ, "destination address required") \
105 XX(EEXIST, "file already exists") \
106 XX(EFAULT, "bad address in system call argument") \
107 XX(EFBIG, "file too large") \
108 XX(EHOSTUNREACH, "host is unreachable") \
109 XX(EINTR, "interrupted system call") \
110 XX(EINVAL, "invalid argument") \
111 XX(EIO, "i/o error") \
112 XX(EISCONN, "socket is already connected") \
113 XX(EISDIR, "illegal operation on a directory") \
114 XX(ELOOP, "too many symbolic links encountered") \
115 XX(EMFILE, "too many open files") \
116 XX(EMSGSIZE, "message too long") \
117 XX(ENAMETOOLONG, "name too long") \
118 XX(ENETDOWN, "network is down") \
119 XX(ENETUNREACH, "network is unreachable") \
120 XX(ENFILE, "file table overflow") \
121 XX(ENOBUFS, "no buffer space available") \
122 XX(ENODEV, "no such device") \
123 XX(ENOENT, "no such file or directory") \
124 XX(ENOMEM, "not enough memory") \
125 XX(ENONET, "machine is not on the network") \
126 XX(ENOPROTOOPT, "protocol not available") \
127 XX(ENOSPC, "no space left on device") \
128 XX(ENOSYS, "function not implemented") \
129 XX(ENOTCONN, "socket is not connected") \
130 XX(ENOTDIR, "not a directory") \
131 XX(ENOTEMPTY, "directory not empty") \
132 XX(ENOTSOCK, "socket operation on non-socket") \
133 XX(ENOTSUP, "operation not supported on socket") \
134 XX(EOVERFLOW, "value too large for defined data type") \
135 XX(EPERM, "operation not permitted") \
136 XX(EPIPE, "broken pipe") \
137 XX(EPROTO, "protocol error") \
138 XX(EPROTONOSUPPORT, "protocol not supported") \
139 XX(EPROTOTYPE, "protocol wrong type for socket") \
140 XX(ERANGE, "result too large") \
141 XX(EROFS, "read-only file system") \
142 XX(ESHUTDOWN, "cannot send after transport endpoint shutdown") \
143 XX(ESPIPE, "invalid seek") \
144 XX(ESRCH, "no such process") \
145 XX(ETIMEDOUT, "connection timed out") \
146 XX(ETXTBSY, "text file is busy") \
147 XX(EXDEV, "cross-device link not permitted") \
148 XX(UNKNOWN, "unknown error") \
149 XX(EOF, "end of file") \
150 XX(ENXIO, "no such device or address") \
151 XX(EMLINK, "too many links") \
152 XX(EHOSTDOWN, "host is down") \
153 XX(EREMOTEIO, "remote I/O error") \
154 XX(ENOTTY, "inappropriate ioctl for device") \
155 XX(EFTYPE, "inappropriate file type or format") \
156 XX(EILSEQ, "illegal byte sequence") \
157 XX(ESOCKTNOSUPPORT, "socket type not supported") \
158 XX(ENODATA, "no data available") \
159 XX(EUNATCH, "protocol driver not attached") \
160
161 #define UV_HANDLE_TYPE_MAP(XX) \
162 XX(ASYNC, async) \
163 XX(CHECK, check) \
164 XX(FS_EVENT, fs_event) \
165 XX(FS_POLL, fs_poll) \
166 XX(HANDLE, handle) \
167 XX(IDLE, idle) \
168 XX(NAMED_PIPE, pipe) \
169 XX(POLL, poll) \
170 XX(PREPARE, prepare) \
171 XX(PROCESS, process) \
172 XX(STREAM, stream) \
173 XX(TCP, tcp) \
174 XX(TIMER, timer) \
175 XX(TTY, tty) \
176 XX(UDP, udp) \
177 XX(SIGNAL, signal) \
178
179 #define UV_REQ_TYPE_MAP(XX) \
180 XX(REQ, req) \
181 XX(CONNECT, connect) \
182 XX(WRITE, write) \
183 XX(SHUTDOWN, shutdown) \
184 XX(UDP_SEND, udp_send) \
185 XX(FS, fs) \
186 XX(WORK, work) \
187 XX(GETADDRINFO, getaddrinfo) \
188 XX(GETNAMEINFO, getnameinfo) \
189 XX(RANDOM, random) \
190
191 typedef enum {
192 #define XX(code, _) UV_ ## code = UV__ ## code,
193 UV_ERRNO_MAP(XX)
194 #undef XX
195 UV_ERRNO_MAX = UV__EOF - 1
196 } uv_errno_t;
197
198 typedef enum {
199 UV_UNKNOWN_HANDLE = 0,
200 #define XX(uc, lc) UV_##uc,
201 UV_HANDLE_TYPE_MAP(XX)
202 #undef XX
203 UV_FILE,
204 UV_HANDLE_TYPE_MAX
205 } uv_handle_type;
206
207 typedef enum {
208 UV_UNKNOWN_REQ = 0,
209 #define XX(uc, lc) UV_##uc,
210 UV_REQ_TYPE_MAP(XX)
211 #undef XX
212 UV_REQ_TYPE_PRIVATE
213 UV_REQ_TYPE_MAX
214 } uv_req_type;
215
216
217 /* Handle types. */
218 typedef struct uv_loop_s uv_loop_t;
219 typedef struct uv_handle_s uv_handle_t;
220 typedef struct uv_dir_s uv_dir_t;
221 typedef struct uv_stream_s uv_stream_t;
222 typedef struct uv_tcp_s uv_tcp_t;
223 typedef struct uv_udp_s uv_udp_t;
224 typedef struct uv_pipe_s uv_pipe_t;
225 typedef struct uv_tty_s uv_tty_t;
226 typedef struct uv_poll_s uv_poll_t;
227 typedef struct uv_timer_s uv_timer_t;
228 typedef struct uv_prepare_s uv_prepare_t;
229 typedef struct uv_check_s uv_check_t;
230 typedef struct uv_idle_s uv_idle_t;
231 typedef struct uv_async_s uv_async_t;
232 typedef struct uv_process_s uv_process_t;
233 typedef struct uv_fs_event_s uv_fs_event_t;
234 typedef struct uv_fs_poll_s uv_fs_poll_t;
235 typedef struct uv_signal_s uv_signal_t;
236
237 /* Request types. */
238 typedef struct uv_req_s uv_req_t;
239 typedef struct uv_getaddrinfo_s uv_getaddrinfo_t;
240 typedef struct uv_getnameinfo_s uv_getnameinfo_t;
241 typedef struct uv_shutdown_s uv_shutdown_t;
242 typedef struct uv_write_s uv_write_t;
243 typedef struct uv_connect_s uv_connect_t;
244 typedef struct uv_udp_send_s uv_udp_send_t;
245 typedef struct uv_fs_s uv_fs_t;
246 typedef struct uv_work_s uv_work_t;
247 typedef struct uv_random_s uv_random_t;
248
249 /* None of the above. */
250 typedef struct uv_env_item_s uv_env_item_t;
251 typedef struct uv_cpu_info_s uv_cpu_info_t;
252 typedef struct uv_interface_address_s uv_interface_address_t;
253 typedef struct uv_dirent_s uv_dirent_t;
254 typedef struct uv_passwd_s uv_passwd_t;
255 typedef struct uv_group_s uv_group_t;
256 typedef struct uv_utsname_s uv_utsname_t;
257 typedef struct uv_statfs_s uv_statfs_t;
258
259 typedef struct uv_metrics_s uv_metrics_t;
260
261 typedef enum {
262 UV_LOOP_BLOCK_SIGNAL = 0,
263 UV_METRICS_IDLE_TIME
264 } uv_loop_option;
265
266 typedef enum {
267 UV_RUN_DEFAULT = 0,
268 UV_RUN_ONCE,
269 UV_RUN_NOWAIT
270 } uv_run_mode;
271
272
273 UV_EXTERN unsigned int uv_version(void);
274 UV_EXTERN const char* uv_version_string(void);
275
276 typedef void* (*uv_malloc_func)(size_t size);
277 typedef void* (*uv_realloc_func)(void* ptr, size_t size);
278 typedef void* (*uv_calloc_func)(size_t count, size_t size);
279 typedef void (*uv_free_func)(void* ptr);
280
281 UV_EXTERN void uv_library_shutdown(void);
282
283 UV_EXTERN int uv_replace_allocator(uv_malloc_func malloc_func,
284 uv_realloc_func realloc_func,
285 uv_calloc_func calloc_func,
286 uv_free_func free_func);
287
288 UV_EXTERN uv_loop_t* uv_default_loop(void);
289 UV_EXTERN int uv_loop_init(uv_loop_t* loop);
290 UV_EXTERN int uv_loop_close(uv_loop_t* loop);
291 /*
292 * NOTE:
293 * This function is DEPRECATED, users should
294 * allocate the loop manually and use uv_loop_init instead.
295 */
296 UV_EXTERN uv_loop_t* uv_loop_new(void);
297 /*
298 * NOTE:
299 * This function is DEPRECATED. Users should use
300 * uv_loop_close and free the memory manually instead.
301 */
302 UV_EXTERN void uv_loop_delete(uv_loop_t*);
303 UV_EXTERN size_t uv_loop_size(void);
304 UV_EXTERN int uv_loop_alive(const uv_loop_t* loop);
305 UV_EXTERN int uv_loop_configure(uv_loop_t* loop, uv_loop_option option, ...);
306 UV_EXTERN int uv_loop_fork(uv_loop_t* loop);
307
308 UV_EXTERN int uv_run(uv_loop_t*, uv_run_mode mode);
309 UV_EXTERN void uv_stop(uv_loop_t*);
310
311 UV_EXTERN void uv_ref(uv_handle_t*);
312 UV_EXTERN void uv_unref(uv_handle_t*);
313 UV_EXTERN int uv_has_ref(const uv_handle_t*);
314
315 UV_EXTERN void uv_update_time(uv_loop_t*);
316 UV_EXTERN uint64_t uv_now(const uv_loop_t*);
317
318 UV_EXTERN int uv_backend_fd(const uv_loop_t*);
319 UV_EXTERN int uv_backend_timeout(const uv_loop_t*);
320
321 typedef void (*uv_alloc_cb)(uv_handle_t* handle,
322 size_t suggested_size,
323 uv_buf_t* buf);
324 typedef void (*uv_read_cb)(uv_stream_t* stream,
325 ssize_t nread,
326 const uv_buf_t* buf);
327 typedef void (*uv_write_cb)(uv_write_t* req, int status);
328 typedef void (*uv_connect_cb)(uv_connect_t* req, int status);
329 typedef void (*uv_shutdown_cb)(uv_shutdown_t* req, int status);
330 typedef void (*uv_connection_cb)(uv_stream_t* server, int status);
331 typedef void (*uv_close_cb)(uv_handle_t* handle);
332 typedef void (*uv_poll_cb)(uv_poll_t* handle, int status, int events);
333 typedef void (*uv_timer_cb)(uv_timer_t* handle);
334 typedef void (*uv_async_cb)(uv_async_t* handle);
335 typedef void (*uv_prepare_cb)(uv_prepare_t* handle);
336 typedef void (*uv_check_cb)(uv_check_t* handle);
337 typedef void (*uv_idle_cb)(uv_idle_t* handle);
338 typedef void (*uv_exit_cb)(uv_process_t*, int64_t exit_status, int term_signal);
339 typedef void (*uv_walk_cb)(uv_handle_t* handle, void* arg);
340 typedef void (*uv_fs_cb)(uv_fs_t* req);
341 typedef void (*uv_work_cb)(uv_work_t* req);
342 typedef void (*uv_after_work_cb)(uv_work_t* req, int status);
343 typedef void (*uv_getaddrinfo_cb)(uv_getaddrinfo_t* req,
344 int status,
345 struct addrinfo* res);
346 typedef void (*uv_getnameinfo_cb)(uv_getnameinfo_t* req,
347 int status,
348 const char* hostname,
349 const char* service);
350 typedef void (*uv_random_cb)(uv_random_t* req,
351 int status,
352 void* buf,
353 size_t buflen);
354
355 typedef enum {
356 UV_CLOCK_MONOTONIC,
357 UV_CLOCK_REALTIME
358 } uv_clock_id;
359
360 /* XXX(bnoordhuis) not 2038-proof, https://github.com/libuv/libuv/issues/3864 */
361 typedef struct {
362 long tv_sec;
363 long tv_nsec;
364 } uv_timespec_t;
365
366 typedef struct {
367 int64_t tv_sec;
368 int32_t tv_nsec;
369 } uv_timespec64_t;
370
371 /* XXX(bnoordhuis) not 2038-proof, https://github.com/libuv/libuv/issues/3864 */
372 typedef struct {
373 long tv_sec;
374 long tv_usec;
375 } uv_timeval_t;
376
377 typedef struct {
378 int64_t tv_sec;
379 int32_t tv_usec;
380 } uv_timeval64_t;
381
382 typedef struct {
383 uint64_t st_dev;
384 uint64_t st_mode;
385 uint64_t st_nlink;
386 uint64_t st_uid;
387 uint64_t st_gid;
388 uint64_t st_rdev;
389 uint64_t st_ino;
390 uint64_t st_size;
391 uint64_t st_blksize;
392 uint64_t st_blocks;
393 uint64_t st_flags;
394 uint64_t st_gen;
395 uv_timespec_t st_atim;
396 uv_timespec_t st_mtim;
397 uv_timespec_t st_ctim;
398 uv_timespec_t st_birthtim;
399 } uv_stat_t;
400
401
402 typedef void (*uv_fs_event_cb)(uv_fs_event_t* handle,
403 const char* filename,
404 int events,
405 int status);
406
407 typedef void (*uv_fs_poll_cb)(uv_fs_poll_t* handle,
408 int status,
409 const uv_stat_t* prev,
410 const uv_stat_t* curr);
411
412 typedef void (*uv_signal_cb)(uv_signal_t* handle, int signum);
413
414
415 typedef enum {
416 UV_LEAVE_GROUP = 0,
417 UV_JOIN_GROUP
418 } uv_membership;
419
420
421 UV_EXTERN int uv_translate_sys_error(int sys_errno);
422
423 UV_EXTERN const char* uv_strerror(int err);
424 UV_EXTERN char* uv_strerror_r(int err, char* buf, size_t buflen);
425
426 UV_EXTERN const char* uv_err_name(int err);
427 UV_EXTERN char* uv_err_name_r(int err, char* buf, size_t buflen);
428
429
430 #define UV_REQ_FIELDS \
431 /* public */ \
432 void* data; \
433 /* read-only */ \
434 uv_req_type type; \
435 /* private */ \
436 void* reserved[6]; \
437 UV_REQ_PRIVATE_FIELDS \
438
439 /* Abstract base class of all requests. */
440 struct uv_req_s {
441 UV_REQ_FIELDS
442 };
443
444
445 /* Platform-specific request types. */
446 UV_PRIVATE_REQ_TYPES
447
448
449 UV_EXTERN int uv_shutdown(uv_shutdown_t* req,
450 uv_stream_t* handle,
451 uv_shutdown_cb cb);
452
453 struct uv_shutdown_s {
454 UV_REQ_FIELDS
455 uv_stream_t* handle;
456 uv_shutdown_cb cb;
457 UV_SHUTDOWN_PRIVATE_FIELDS
458 };
459
460
461 #define UV_HANDLE_FIELDS \
462 /* public */ \
463 void* data; \
464 /* read-only */ \
465 uv_loop_t* loop; \
466 uv_handle_type type; \
467 /* private */ \
468 uv_close_cb close_cb; \
469 struct uv__queue handle_queue; \
470 union { \
471 int fd; \
472 void* reserved[4]; \
473 } u; \
474 UV_HANDLE_PRIVATE_FIELDS \
475
476 /* The abstract base class of all handles. */
477 struct uv_handle_s {
478 UV_HANDLE_FIELDS
479 };
480
481 UV_EXTERN size_t uv_handle_size(uv_handle_type type);
482 UV_EXTERN uv_handle_type uv_handle_get_type(const uv_handle_t* handle);
483 UV_EXTERN const char* uv_handle_type_name(uv_handle_type type);
484 UV_EXTERN void* uv_handle_get_data(const uv_handle_t* handle);
485 UV_EXTERN uv_loop_t* uv_handle_get_loop(const uv_handle_t* handle);
486 UV_EXTERN void uv_handle_set_data(uv_handle_t* handle, void* data);
487
488 UV_EXTERN size_t uv_req_size(uv_req_type type);
489 UV_EXTERN void* uv_req_get_data(const uv_req_t* req);
490 UV_EXTERN void uv_req_set_data(uv_req_t* req, void* data);
491 UV_EXTERN uv_req_type uv_req_get_type(const uv_req_t* req);
492 UV_EXTERN const char* uv_req_type_name(uv_req_type type);
493
494 UV_EXTERN int uv_is_active(const uv_handle_t* handle);
495
496 UV_EXTERN void uv_walk(uv_loop_t* loop, uv_walk_cb walk_cb, void* arg);
497
498 /* Helpers for ad hoc debugging, no API/ABI stability guaranteed. */
499 UV_EXTERN void uv_print_all_handles(uv_loop_t* loop, FILE* stream);
500 UV_EXTERN void uv_print_active_handles(uv_loop_t* loop, FILE* stream);
501
502 UV_EXTERN void uv_close(uv_handle_t* handle, uv_close_cb close_cb);
503
504 UV_EXTERN int uv_send_buffer_size(uv_handle_t* handle, int* value);
505 UV_EXTERN int uv_recv_buffer_size(uv_handle_t* handle, int* value);
506
507 UV_EXTERN int uv_fileno(const uv_handle_t* handle, uv_os_fd_t* fd);
508
509 UV_EXTERN uv_buf_t uv_buf_init(char* base, unsigned int len);
510
511 UV_EXTERN int uv_pipe(uv_file fds[2], int read_flags, int write_flags);
512 UV_EXTERN int uv_socketpair(int type,
513 int protocol,
514 uv_os_sock_t socket_vector[2],
515 int flags0,
516 int flags1);
517
518 #define UV_STREAM_FIELDS \
519 /* number of bytes queued for writing */ \
520 size_t write_queue_size; \
521 uv_alloc_cb alloc_cb; \
522 uv_read_cb read_cb; \
523 /* private */ \
524 UV_STREAM_PRIVATE_FIELDS
525
526 /*
527 * uv_stream_t is a subclass of uv_handle_t.
528 *
529 * uv_stream is an abstract class.
530 *
531 * uv_stream_t is the parent class of uv_tcp_t, uv_pipe_t and uv_tty_t.
532 */
533 struct uv_stream_s {
534 UV_HANDLE_FIELDS
535 UV_STREAM_FIELDS
536 };
537
538 UV_EXTERN size_t uv_stream_get_write_queue_size(const uv_stream_t* stream);
539
540 UV_EXTERN int uv_listen(uv_stream_t* stream, int backlog, uv_connection_cb cb);
541 UV_EXTERN int uv_accept(uv_stream_t* server, uv_stream_t* client);
542
543 UV_EXTERN int uv_read_start(uv_stream_t*,
544 uv_alloc_cb alloc_cb,
545 uv_read_cb read_cb);
546 UV_EXTERN int uv_read_stop(uv_stream_t*);
547
548 UV_EXTERN int uv_write(uv_write_t* req,
549 uv_stream_t* handle,
550 const uv_buf_t bufs[],
551 unsigned int nbufs,
552 uv_write_cb cb);
553 UV_EXTERN int uv_write2(uv_write_t* req,
554 uv_stream_t* handle,
555 const uv_buf_t bufs[],
556 unsigned int nbufs,
557 uv_stream_t* send_handle,
558 uv_write_cb cb);
559 UV_EXTERN int uv_try_write(uv_stream_t* handle,
560 const uv_buf_t bufs[],
561 unsigned int nbufs);
562 UV_EXTERN int uv_try_write2(uv_stream_t* handle,
563 const uv_buf_t bufs[],
564 unsigned int nbufs,
565 uv_stream_t* send_handle);
566
567 /* uv_write_t is a subclass of uv_req_t. */
568 struct uv_write_s {
569 UV_REQ_FIELDS
570 uv_write_cb cb;
571 uv_stream_t* send_handle; /* TODO: make private and unix-only in v2.x. */
572 uv_stream_t* handle;
573 UV_WRITE_PRIVATE_FIELDS
574 };
575
576
577 UV_EXTERN int uv_is_readable(const uv_stream_t* handle);
578 UV_EXTERN int uv_is_writable(const uv_stream_t* handle);
579
580 UV_EXTERN int uv_stream_set_blocking(uv_stream_t* handle, int blocking);
581
582 UV_EXTERN int uv_is_closing(const uv_handle_t* handle);
583
584
585 /*
586 * uv_tcp_t is a subclass of uv_stream_t.
587 *
588 * Represents a TCP stream or TCP server.
589 */
590 struct uv_tcp_s {
591 UV_HANDLE_FIELDS
592 UV_STREAM_FIELDS
593 UV_TCP_PRIVATE_FIELDS
594 };
595
596 UV_EXTERN int uv_tcp_init(uv_loop_t*, uv_tcp_t* handle);
597 UV_EXTERN int uv_tcp_init_ex(uv_loop_t*, uv_tcp_t* handle, unsigned int flags);
598 UV_EXTERN int uv_tcp_open(uv_tcp_t* handle, uv_os_sock_t sock);
599 UV_EXTERN int uv_tcp_nodelay(uv_tcp_t* handle, int enable);
600 UV_EXTERN int uv_tcp_keepalive(uv_tcp_t* handle,
601 int enable,
602 unsigned int delay);
603 UV_EXTERN int uv_tcp_simultaneous_accepts(uv_tcp_t* handle, int enable);
604
605 enum uv_tcp_flags {
606 /* Used with uv_tcp_bind, when an IPv6 address is used. */
607 UV_TCP_IPV6ONLY = 1
608 };
609
610 UV_EXTERN int uv_tcp_bind(uv_tcp_t* handle,
611 const struct sockaddr* addr,
612 unsigned int flags);
613 UV_EXTERN int uv_tcp_getsockname(const uv_tcp_t* handle,
614 struct sockaddr* name,
615 int* namelen);
616 UV_EXTERN int uv_tcp_getpeername(const uv_tcp_t* handle,
617 struct sockaddr* name,
618 int* namelen);
619 UV_EXTERN int uv_tcp_close_reset(uv_tcp_t* handle, uv_close_cb close_cb);
620 UV_EXTERN int uv_tcp_connect(uv_connect_t* req,
621 uv_tcp_t* handle,
622 const struct sockaddr* addr,
623 uv_connect_cb cb);
624
625 /* uv_connect_t is a subclass of uv_req_t. */
626 struct uv_connect_s {
627 UV_REQ_FIELDS
628 uv_connect_cb cb;
629 uv_stream_t* handle;
630 UV_CONNECT_PRIVATE_FIELDS
631 };
632
633
634 /*
635 * UDP support.
636 */
637
638 enum uv_udp_flags {
639 /* Disables dual stack mode. */
640 UV_UDP_IPV6ONLY = 1,
641 /*
642 * Indicates message was truncated because read buffer was too small. The
643 * remainder was discarded by the OS. Used in uv_udp_recv_cb.
644 */
645 UV_UDP_PARTIAL = 2,
646 /*
647 * Indicates if SO_REUSEADDR will be set when binding the handle.
648 * This sets the SO_REUSEPORT socket flag on the BSDs and OS X. On other
649 * Unix platforms, it sets the SO_REUSEADDR flag. What that means is that
650 * multiple threads or processes can bind to the same address without error
651 * (provided they all set the flag) but only the last one to bind will receive
652 * any traffic, in effect "stealing" the port from the previous listener.
653 */
654 UV_UDP_REUSEADDR = 4,
655 /*
656 * Indicates that the message was received by recvmmsg, so the buffer provided
657 * must not be freed by the recv_cb callback.
658 */
659 UV_UDP_MMSG_CHUNK = 8,
660 /*
661 * Indicates that the buffer provided has been fully utilized by recvmmsg and
662 * that it should now be freed by the recv_cb callback. When this flag is set
663 * in uv_udp_recv_cb, nread will always be 0 and addr will always be NULL.
664 */
665 UV_UDP_MMSG_FREE = 16,
666 /*
667 * Indicates if IP_RECVERR/IPV6_RECVERR will be set when binding the handle.
668 * This sets IP_RECVERR for IPv4 and IPV6_RECVERR for IPv6 UDP sockets on
669 * Linux. This stops the Linux kernel from suppressing some ICMP error
670 * messages and enables full ICMP error reporting for faster failover.
671 * This flag is no-op on platforms other than Linux.
672 */
673 UV_UDP_LINUX_RECVERR = 32,
674 /*
675 * Indicates that recvmmsg should be used, if available.
676 */
677 UV_UDP_RECVMMSG = 256
678 };
679
680 typedef void (*uv_udp_send_cb)(uv_udp_send_t* req, int status);
681 typedef void (*uv_udp_recv_cb)(uv_udp_t* handle,
682 ssize_t nread,
683 const uv_buf_t* buf,
684 const struct sockaddr* addr,
685 unsigned flags);
686
687 /* uv_udp_t is a subclass of uv_handle_t. */
688 struct uv_udp_s {
689 UV_HANDLE_FIELDS
690 /* read-only */
691 /*
692 * Number of bytes queued for sending. This field strictly shows how much
693 * information is currently queued.
694 */
695 size_t send_queue_size;
696 /*
697 * Number of send requests currently in the queue awaiting to be processed.
698 */
699 size_t send_queue_count;
700 UV_UDP_PRIVATE_FIELDS
701 };
702
703 /* uv_udp_send_t is a subclass of uv_req_t. */
704 struct uv_udp_send_s {
705 UV_REQ_FIELDS
706 uv_udp_t* handle;
707 uv_udp_send_cb cb;
708 UV_UDP_SEND_PRIVATE_FIELDS
709 };
710
711 UV_EXTERN int uv_udp_init(uv_loop_t*, uv_udp_t* handle);
712 UV_EXTERN int uv_udp_init_ex(uv_loop_t*, uv_udp_t* handle, unsigned int flags);
713 UV_EXTERN int uv_udp_open(uv_udp_t* handle, uv_os_sock_t sock);
714 UV_EXTERN int uv_udp_bind(uv_udp_t* handle,
715 const struct sockaddr* addr,
716 unsigned int flags);
717 UV_EXTERN int uv_udp_connect(uv_udp_t* handle, const struct sockaddr* addr);
718
719 UV_EXTERN int uv_udp_getpeername(const uv_udp_t* handle,
720 struct sockaddr* name,
721 int* namelen);
722 UV_EXTERN int uv_udp_getsockname(const uv_udp_t* handle,
723 struct sockaddr* name,
724 int* namelen);
725 UV_EXTERN int uv_udp_set_membership(uv_udp_t* handle,
726 const char* multicast_addr,
727 const char* interface_addr,
728 uv_membership membership);
729 UV_EXTERN int uv_udp_set_source_membership(uv_udp_t* handle,
730 const char* multicast_addr,
731 const char* interface_addr,
732 const char* source_addr,
733 uv_membership membership);
734 UV_EXTERN int uv_udp_set_multicast_loop(uv_udp_t* handle, int on);
735 UV_EXTERN int uv_udp_set_multicast_ttl(uv_udp_t* handle, int ttl);
736 UV_EXTERN int uv_udp_set_multicast_interface(uv_udp_t* handle,
737 const char* interface_addr);
738 UV_EXTERN int uv_udp_set_broadcast(uv_udp_t* handle, int on);
739 UV_EXTERN int uv_udp_set_ttl(uv_udp_t* handle, int ttl);
740 UV_EXTERN int uv_udp_send(uv_udp_send_t* req,
741 uv_udp_t* handle,
742 const uv_buf_t bufs[],
743 unsigned int nbufs,
744 const struct sockaddr* addr,
745 uv_udp_send_cb send_cb);
746 UV_EXTERN int uv_udp_try_send(uv_udp_t* handle,
747 const uv_buf_t bufs[],
748 unsigned int nbufs,
749 const struct sockaddr* addr);
750 UV_EXTERN int uv_udp_recv_start(uv_udp_t* handle,
751 uv_alloc_cb alloc_cb,
752 uv_udp_recv_cb recv_cb);
753 UV_EXTERN int uv_udp_using_recvmmsg(const uv_udp_t* handle);
754 UV_EXTERN int uv_udp_recv_stop(uv_udp_t* handle);
755 UV_EXTERN size_t uv_udp_get_send_queue_size(const uv_udp_t* handle);
756 UV_EXTERN size_t uv_udp_get_send_queue_count(const uv_udp_t* handle);
757
758
759 /*
760 * uv_tty_t is a subclass of uv_stream_t.
761 *
762 * Representing a stream for the console.
763 */
764 struct uv_tty_s {
765 UV_HANDLE_FIELDS
766 UV_STREAM_FIELDS
767 UV_TTY_PRIVATE_FIELDS
768 };
769
770 typedef enum {
771 /* Initial/normal terminal mode */
772 UV_TTY_MODE_NORMAL,
773 /* Raw input mode (On Windows, ENABLE_WINDOW_INPUT is also enabled) */
774 UV_TTY_MODE_RAW,
775 /* Binary-safe I/O mode for IPC (Unix-only) */
776 UV_TTY_MODE_IO
777 } uv_tty_mode_t;
778
779 typedef enum {
780 /*
781 * The console supports handling of virtual terminal sequences
782 * (Windows10 new console, ConEmu)
783 */
784 UV_TTY_SUPPORTED,
785 /* The console cannot process the virtual terminal sequence. (Legacy
786 * console)
787 */
788 UV_TTY_UNSUPPORTED
789 } uv_tty_vtermstate_t;
790
791
792 UV_EXTERN int uv_tty_init(uv_loop_t*, uv_tty_t*, uv_file fd, int readable);
793 UV_EXTERN int uv_tty_set_mode(uv_tty_t*, uv_tty_mode_t mode);
794 UV_EXTERN int uv_tty_reset_mode(void);
795 UV_EXTERN int uv_tty_get_winsize(uv_tty_t*, int* width, int* height);
796 UV_EXTERN void uv_tty_set_vterm_state(uv_tty_vtermstate_t state);
797 UV_EXTERN int uv_tty_get_vterm_state(uv_tty_vtermstate_t* state);
798
799 #ifdef __cplusplus
800 extern "C++" {
801
802 inline int uv_tty_set_mode(uv_tty_t* handle, int mode) {
803 return uv_tty_set_mode(handle, static_cast<uv_tty_mode_t>(mode));
804 }
805
806 }
807 #endif
808
809 UV_EXTERN uv_handle_type uv_guess_handle(uv_file file);
810
811 enum {
812 UV_PIPE_NO_TRUNCATE = 1u << 0
813 };
814
815 /*
816 * uv_pipe_t is a subclass of uv_stream_t.
817 *
818 * Representing a pipe stream or pipe server. On Windows this is a Named
819 * Pipe. On Unix this is a Unix domain socket.
820 */
821 struct uv_pipe_s {
822 UV_HANDLE_FIELDS
823 UV_STREAM_FIELDS
824 int ipc; /* non-zero if this pipe is used for passing handles */
825 UV_PIPE_PRIVATE_FIELDS
826 };
827
828 UV_EXTERN int uv_pipe_init(uv_loop_t*, uv_pipe_t* handle, int ipc);
829 UV_EXTERN int uv_pipe_open(uv_pipe_t*, uv_file file);
830 UV_EXTERN int uv_pipe_bind(uv_pipe_t* handle, const char* name);
831 UV_EXTERN int uv_pipe_bind2(uv_pipe_t* handle,
832 const char* name,
833 size_t namelen,
834 unsigned int flags);
835 UV_EXTERN void uv_pipe_connect(uv_connect_t* req,
836 uv_pipe_t* handle,
837 const char* name,
838 uv_connect_cb cb);
839 UV_EXTERN int uv_pipe_connect2(uv_connect_t* req,
840 uv_pipe_t* handle,
841 const char* name,
842 size_t namelen,
843 unsigned int flags,
844 uv_connect_cb cb);
845 UV_EXTERN int uv_pipe_getsockname(const uv_pipe_t* handle,
846 char* buffer,
847 size_t* size);
848 UV_EXTERN int uv_pipe_getpeername(const uv_pipe_t* handle,
849 char* buffer,
850 size_t* size);
851 UV_EXTERN void uv_pipe_pending_instances(uv_pipe_t* handle, int count);
852 UV_EXTERN int uv_pipe_pending_count(uv_pipe_t* handle);
853 UV_EXTERN uv_handle_type uv_pipe_pending_type(uv_pipe_t* handle);
854 UV_EXTERN int uv_pipe_chmod(uv_pipe_t* handle, int flags);
855
856
857 struct uv_poll_s {
858 UV_HANDLE_FIELDS
859 uv_poll_cb poll_cb;
860 UV_POLL_PRIVATE_FIELDS
861 };
862
863 enum uv_poll_event {
864 UV_READABLE = 1,
865 UV_WRITABLE = 2,
866 UV_DISCONNECT = 4,
867 UV_PRIORITIZED = 8
868 };
869
870 UV_EXTERN int uv_poll_init(uv_loop_t* loop, uv_poll_t* handle, int fd);
871 UV_EXTERN int uv_poll_init_socket(uv_loop_t* loop,
872 uv_poll_t* handle,
873 uv_os_sock_t socket);
874 UV_EXTERN int uv_poll_start(uv_poll_t* handle, int events, uv_poll_cb cb);
875 UV_EXTERN int uv_poll_stop(uv_poll_t* handle);
876
877
878 struct uv_prepare_s {
879 UV_HANDLE_FIELDS
880 UV_PREPARE_PRIVATE_FIELDS
881 };
882
883 UV_EXTERN int uv_prepare_init(uv_loop_t*, uv_prepare_t* prepare);
884 UV_EXTERN int uv_prepare_start(uv_prepare_t* prepare, uv_prepare_cb cb);
885 UV_EXTERN int uv_prepare_stop(uv_prepare_t* prepare);
886
887
888 struct uv_check_s {
889 UV_HANDLE_FIELDS
890 UV_CHECK_PRIVATE_FIELDS
891 };
892
893 UV_EXTERN int uv_check_init(uv_loop_t*, uv_check_t* check);
894 UV_EXTERN int uv_check_start(uv_check_t* check, uv_check_cb cb);
895 UV_EXTERN int uv_check_stop(uv_check_t* check);
896
897
898 struct uv_idle_s {
899 UV_HANDLE_FIELDS
900 UV_IDLE_PRIVATE_FIELDS
901 };
902
903 UV_EXTERN int uv_idle_init(uv_loop_t*, uv_idle_t* idle);
904 UV_EXTERN int uv_idle_start(uv_idle_t* idle, uv_idle_cb cb);
905 UV_EXTERN int uv_idle_stop(uv_idle_t* idle);
906
907
908 struct uv_async_s {
909 UV_HANDLE_FIELDS
910 UV_ASYNC_PRIVATE_FIELDS
911 };
912
913 UV_EXTERN int uv_async_init(uv_loop_t*,
914 uv_async_t* async,
915 uv_async_cb async_cb);
916 UV_EXTERN int uv_async_send(uv_async_t* async);
917
918
919 /*
920 * uv_timer_t is a subclass of uv_handle_t.
921 *
922 * Used to get woken up at a specified time in the future.
923 */
924 struct uv_timer_s {
925 UV_HANDLE_FIELDS
926 UV_TIMER_PRIVATE_FIELDS
927 };
928
929 UV_EXTERN int uv_timer_init(uv_loop_t*, uv_timer_t* handle);
930 UV_EXTERN int uv_timer_start(uv_timer_t* handle,
931 uv_timer_cb cb,
932 uint64_t timeout,
933 uint64_t repeat);
934 UV_EXTERN int uv_timer_stop(uv_timer_t* handle);
935 UV_EXTERN int uv_timer_again(uv_timer_t* handle);
936 UV_EXTERN void uv_timer_set_repeat(uv_timer_t* handle, uint64_t repeat);
937 UV_EXTERN uint64_t uv_timer_get_repeat(const uv_timer_t* handle);
938 UV_EXTERN uint64_t uv_timer_get_due_in(const uv_timer_t* handle);
939
940
941 /*
942 * uv_getaddrinfo_t is a subclass of uv_req_t.
943 *
944 * Request object for uv_getaddrinfo.
945 */
946 struct uv_getaddrinfo_s {
947 UV_REQ_FIELDS
948 /* read-only */
949 uv_loop_t* loop;
950 /* struct addrinfo* addrinfo is marked as private, but it really isn't. */
951 UV_GETADDRINFO_PRIVATE_FIELDS
952 };
953
954
955 UV_EXTERN int uv_getaddrinfo(uv_loop_t* loop,
956 uv_getaddrinfo_t* req,
957 uv_getaddrinfo_cb getaddrinfo_cb,
958 const char* node,
959 const char* service,
960 const struct addrinfo* hints);
961 UV_EXTERN void uv_freeaddrinfo(struct addrinfo* ai);
962
963
964 /*
965 * uv_getnameinfo_t is a subclass of uv_req_t.
966 *
967 * Request object for uv_getnameinfo.
968 */
969 struct uv_getnameinfo_s {
970 UV_REQ_FIELDS
971 /* read-only */
972 uv_loop_t* loop;
973 /* host and service are marked as private, but they really aren't. */
974 UV_GETNAMEINFO_PRIVATE_FIELDS
975 };
976
977 UV_EXTERN int uv_getnameinfo(uv_loop_t* loop,
978 uv_getnameinfo_t* req,
979 uv_getnameinfo_cb getnameinfo_cb,
980 const struct sockaddr* addr,
981 int flags);
982
983
984 /* uv_spawn() options. */
985 typedef enum {
986 UV_IGNORE = 0x00,
987 UV_CREATE_PIPE = 0x01,
988 UV_INHERIT_FD = 0x02,
989 UV_INHERIT_STREAM = 0x04,
990
991 /*
992 * When UV_CREATE_PIPE is specified, UV_READABLE_PIPE and UV_WRITABLE_PIPE
993 * determine the direction of flow, from the child process' perspective. Both
994 * flags may be specified to create a duplex data stream.
995 */
996 UV_READABLE_PIPE = 0x10,
997 UV_WRITABLE_PIPE = 0x20,
998
999 /*
1000 * When UV_CREATE_PIPE is specified, specifying UV_NONBLOCK_PIPE opens the
1001 * handle in non-blocking mode in the child. This may cause loss of data,
1002 * if the child is not designed to handle to encounter this mode,
1003 * but can also be significantly more efficient.
1004 */
1005 UV_NONBLOCK_PIPE = 0x40,
1006 UV_OVERLAPPED_PIPE = 0x40 /* old name, for compatibility */
1007 } uv_stdio_flags;
1008
1009 typedef struct uv_stdio_container_s {
1010 uv_stdio_flags flags;
1011
1012 union {
1013 uv_stream_t* stream;
1014 int fd;
1015 } data;
1016 } uv_stdio_container_t;
1017
1018 typedef struct uv_process_options_s {
1019 uv_exit_cb exit_cb; /* Called after the process exits. */
1020 const char* file; /* Path to program to execute. */
1021 /*
1022 * Command line arguments. args[0] should be the path to the program. On
1023 * Windows this uses CreateProcess which concatenates the arguments into a
1024 * string this can cause some strange errors. See the note at
1025 * windows_verbatim_arguments.
1026 */
1027 char** args;
1028 /*
1029 * This will be set as the environ variable in the subprocess. If this is
1030 * NULL then the parents environ will be used.
1031 */
1032 char** env;
1033 /*
1034 * If non-null this represents a directory the subprocess should execute
1035 * in. Stands for current working directory.
1036 */
1037 const char* cwd;
1038 /*
1039 * Various flags that control how uv_spawn() behaves. See the definition of
1040 * `enum uv_process_flags` below.
1041 */
1042 unsigned int flags;
1043 /*
1044 * The `stdio` field points to an array of uv_stdio_container_t structs that
1045 * describe the file descriptors that will be made available to the child
1046 * process. The convention is that stdio[0] points to stdin, fd 1 is used for
1047 * stdout, and fd 2 is stderr.
1048 *
1049 * Note that on windows file descriptors greater than 2 are available to the
1050 * child process only if the child processes uses the MSVCRT runtime.
1051 */
1052 int stdio_count;
1053 uv_stdio_container_t* stdio;
1054 /*
1055 * Libuv can change the child process' user/group id. This happens only when
1056 * the appropriate bits are set in the flags fields. This is not supported on
1057 * windows; uv_spawn() will fail and set the error to UV_ENOTSUP.
1058 */
1059 uv_uid_t uid;
1060 uv_gid_t gid;
1061 } uv_process_options_t;
1062
1063 /*
1064 * These are the flags that can be used for the uv_process_options.flags field.
1065 */
1066 enum uv_process_flags {
1067 /*
1068 * Set the child process' user id. The user id is supplied in the `uid` field
1069 * of the options struct. This does not work on windows; setting this flag
1070 * will cause uv_spawn() to fail.
1071 */
1072 UV_PROCESS_SETUID = (1 << 0),
1073 /*
1074 * Set the child process' group id. The user id is supplied in the `gid`
1075 * field of the options struct. This does not work on windows; setting this
1076 * flag will cause uv_spawn() to fail.
1077 */
1078 UV_PROCESS_SETGID = (1 << 1),
1079 /*
1080 * Do not wrap any arguments in quotes, or perform any other escaping, when
1081 * converting the argument list into a command line string. This option is
1082 * only meaningful on Windows systems. On Unix it is silently ignored.
1083 */
1084 UV_PROCESS_WINDOWS_VERBATIM_ARGUMENTS = (1 << 2),
1085 /*
1086 * Spawn the child process in a detached state - this will make it a process
1087 * group leader, and will effectively enable the child to keep running after
1088 * the parent exits. Note that the child process will still keep the
1089 * parent's event loop alive unless the parent process calls uv_unref() on
1090 * the child's process handle.
1091 */
1092 UV_PROCESS_DETACHED = (1 << 3),
1093 /*
1094 * Hide the subprocess window that would normally be created. This option is
1095 * only meaningful on Windows systems. On Unix it is silently ignored.
1096 */
1097 UV_PROCESS_WINDOWS_HIDE = (1 << 4),
1098 /*
1099 * Hide the subprocess console window that would normally be created. This
1100 * option is only meaningful on Windows systems. On Unix it is silently
1101 * ignored.
1102 */
1103 UV_PROCESS_WINDOWS_HIDE_CONSOLE = (1 << 5),
1104 /*
1105 * Hide the subprocess GUI window that would normally be created. This
1106 * option is only meaningful on Windows systems. On Unix it is silently
1107 * ignored.
1108 */
1109 UV_PROCESS_WINDOWS_HIDE_GUI = (1 << 6)
1110 };
1111
1112 /*
1113 * uv_process_t is a subclass of uv_handle_t.
1114 */
1115 struct uv_process_s {
1116 UV_HANDLE_FIELDS
1117 uv_exit_cb exit_cb;
1118 int pid;
1119 UV_PROCESS_PRIVATE_FIELDS
1120 };
1121
1122 UV_EXTERN int uv_spawn(uv_loop_t* loop,
1123 uv_process_t* handle,
1124 const uv_process_options_t* options);
1125 UV_EXTERN int uv_process_kill(uv_process_t*, int signum);
1126 UV_EXTERN int uv_kill(int pid, int signum);
1127 UV_EXTERN uv_pid_t uv_process_get_pid(const uv_process_t*);
1128
1129
1130 /*
1131 * uv_work_t is a subclass of uv_req_t.
1132 */
1133 struct uv_work_s {
1134 UV_REQ_FIELDS
1135 uv_loop_t* loop;
1136 uv_work_cb work_cb;
1137 uv_after_work_cb after_work_cb;
1138 UV_WORK_PRIVATE_FIELDS
1139 };
1140
1141 UV_EXTERN int uv_queue_work(uv_loop_t* loop,
1142 uv_work_t* req,
1143 uv_work_cb work_cb,
1144 uv_after_work_cb after_work_cb);
1145
1146 UV_EXTERN int uv_cancel(uv_req_t* req);
1147
1148
1149 struct uv_cpu_times_s {
1150 uint64_t user; /* milliseconds */
1151 uint64_t nice; /* milliseconds */
1152 uint64_t sys; /* milliseconds */
1153 uint64_t idle; /* milliseconds */
1154 uint64_t irq; /* milliseconds */
1155 };
1156
1157 struct uv_cpu_info_s {
1158 char* model;
1159 int speed;
1160 struct uv_cpu_times_s cpu_times;
1161 };
1162
1163 struct uv_interface_address_s {
1164 char* name;
1165 char phys_addr[6];
1166 int is_internal;
1167 union {
1168 struct sockaddr_in address4;
1169 struct sockaddr_in6 address6;
1170 } address;
1171 union {
1172 struct sockaddr_in netmask4;
1173 struct sockaddr_in6 netmask6;
1174 } netmask;
1175 };
1176
1177 struct uv_passwd_s {
1178 char* username;
1179 unsigned long uid;
1180 unsigned long gid;
1181 char* shell;
1182 char* homedir;
1183 };
1184
1185 struct uv_group_s {
1186 char* groupname;
1187 unsigned long gid;
1188 char** members;
1189 };
1190
1191 struct uv_utsname_s {
1192 char sysname[256];
1193 char release[256];
1194 char version[256];
1195 char machine[256];
1196 /* This struct does not contain the nodename and domainname fields present in
1197 the utsname type. domainname is a GNU extension. Both fields are referred
1198 to as meaningless in the docs. */
1199 };
1200
1201 struct uv_statfs_s {
1202 uint64_t f_type;
1203 uint64_t f_bsize;
1204 uint64_t f_blocks;
1205 uint64_t f_bfree;
1206 uint64_t f_bavail;
1207 uint64_t f_files;
1208 uint64_t f_ffree;
1209 uint64_t f_spare[4];
1210 };
1211
1212 typedef enum {
1213 UV_DIRENT_UNKNOWN,
1214 UV_DIRENT_FILE,
1215 UV_DIRENT_DIR,
1216 UV_DIRENT_LINK,
1217 UV_DIRENT_FIFO,
1218 UV_DIRENT_SOCKET,
1219 UV_DIRENT_CHAR,
1220 UV_DIRENT_BLOCK
1221 } uv_dirent_type_t;
1222
1223 struct uv_dirent_s {
1224 const char* name;
1225 uv_dirent_type_t type;
1226 };
1227
1228 UV_EXTERN char** uv_setup_args(int argc, char** argv);
1229 UV_EXTERN int uv_get_process_title(char* buffer, size_t size);
1230 UV_EXTERN int uv_set_process_title(const char* title);
1231 UV_EXTERN int uv_resident_set_memory(size_t* rss);
1232 UV_EXTERN int uv_uptime(double* uptime);
1233 UV_EXTERN uv_os_fd_t uv_get_osfhandle(int fd);
1234 UV_EXTERN int uv_open_osfhandle(uv_os_fd_t os_fd);
1235
1236 typedef struct {
1237 uv_timeval_t ru_utime; /* user CPU time used */
1238 uv_timeval_t ru_stime; /* system CPU time used */
1239 uint64_t ru_maxrss; /* maximum resident set size */
1240 uint64_t ru_ixrss; /* integral shared memory size */
1241 uint64_t ru_idrss; /* integral unshared data size */
1242 uint64_t ru_isrss; /* integral unshared stack size */
1243 uint64_t ru_minflt; /* page reclaims (soft page faults) */
1244 uint64_t ru_majflt; /* page faults (hard page faults) */
1245 uint64_t ru_nswap; /* swaps */
1246 uint64_t ru_inblock; /* block input operations */
1247 uint64_t ru_oublock; /* block output operations */
1248 uint64_t ru_msgsnd; /* IPC messages sent */
1249 uint64_t ru_msgrcv; /* IPC messages received */
1250 uint64_t ru_nsignals; /* signals received */
1251 uint64_t ru_nvcsw; /* voluntary context switches */
1252 uint64_t ru_nivcsw; /* involuntary context switches */
1253 } uv_rusage_t;
1254
1255 UV_EXTERN int uv_getrusage(uv_rusage_t* rusage);
1256
1257 UV_EXTERN int uv_os_homedir(char* buffer, size_t* size);
1258 UV_EXTERN int uv_os_tmpdir(char* buffer, size_t* size);
1259 UV_EXTERN int uv_os_get_passwd(uv_passwd_t* pwd);
1260 UV_EXTERN void uv_os_free_passwd(uv_passwd_t* pwd);
1261 UV_EXTERN int uv_os_get_passwd2(uv_passwd_t* pwd, uv_uid_t uid);
1262 UV_EXTERN int uv_os_get_group(uv_group_t* grp, uv_uid_t gid);
1263 UV_EXTERN void uv_os_free_group(uv_group_t* grp);
1264 UV_EXTERN uv_pid_t uv_os_getpid(void);
1265 UV_EXTERN uv_pid_t uv_os_getppid(void);
1266
1267 #if defined(__PASE__)
1268 /* On IBM i PASE, the highest process priority is -10 */
1269 # define UV_PRIORITY_LOW 39 /* RUNPTY(99) */
1270 # define UV_PRIORITY_BELOW_NORMAL 15 /* RUNPTY(50) */
1271 # define UV_PRIORITY_NORMAL 0 /* RUNPTY(20) */
1272 # define UV_PRIORITY_ABOVE_NORMAL -4 /* RUNTY(12) */
1273 # define UV_PRIORITY_HIGH -7 /* RUNPTY(6) */
1274 # define UV_PRIORITY_HIGHEST -10 /* RUNPTY(1) */
1275 #else
1276 # define UV_PRIORITY_LOW 19
1277 # define UV_PRIORITY_BELOW_NORMAL 10
1278 # define UV_PRIORITY_NORMAL 0
1279 # define UV_PRIORITY_ABOVE_NORMAL -7
1280 # define UV_PRIORITY_HIGH -14
1281 # define UV_PRIORITY_HIGHEST -20
1282 #endif
1283
1284 UV_EXTERN int uv_os_getpriority(uv_pid_t pid, int* priority);
1285 UV_EXTERN int uv_os_setpriority(uv_pid_t pid, int priority);
1286
1287 UV_EXTERN unsigned int uv_available_parallelism(void);
1288 UV_EXTERN int uv_cpu_info(uv_cpu_info_t** cpu_infos, int* count);
1289 UV_EXTERN void uv_free_cpu_info(uv_cpu_info_t* cpu_infos, int count);
1290 UV_EXTERN int uv_cpumask_size(void);
1291
1292 UV_EXTERN int uv_interface_addresses(uv_interface_address_t** addresses,
1293 int* count);
1294 UV_EXTERN void uv_free_interface_addresses(uv_interface_address_t* addresses,
1295 int count);
1296
1297 struct uv_env_item_s {
1298 char* name;
1299 char* value;
1300 };
1301
1302 UV_EXTERN int uv_os_environ(uv_env_item_t** envitems, int* count);
1303 UV_EXTERN void uv_os_free_environ(uv_env_item_t* envitems, int count);
1304 UV_EXTERN int uv_os_getenv(const char* name, char* buffer, size_t* size);
1305 UV_EXTERN int uv_os_setenv(const char* name, const char* value);
1306 UV_EXTERN int uv_os_unsetenv(const char* name);
1307
1308 #ifdef MAXHOSTNAMELEN
1309 # define UV_MAXHOSTNAMESIZE (MAXHOSTNAMELEN + 1)
1310 #else
1311 /*
1312 Fallback for the maximum hostname size, including the null terminator. The
1313 Windows gethostname() documentation states that 256 bytes will always be
1314 large enough to hold the null-terminated hostname.
1315 */
1316 # define UV_MAXHOSTNAMESIZE 256
1317 #endif
1318
1319 UV_EXTERN int uv_os_gethostname(char* buffer, size_t* size);
1320
1321 UV_EXTERN int uv_os_uname(uv_utsname_t* buffer);
1322
1323 struct uv_metrics_s {
1324 uint64_t loop_count;
1325 uint64_t events;
1326 uint64_t events_waiting;
1327 /* private */
1328 uint64_t* reserved[13];
1329 };
1330
1331 UV_EXTERN int uv_metrics_info(uv_loop_t* loop, uv_metrics_t* metrics);
1332 UV_EXTERN uint64_t uv_metrics_idle_time(uv_loop_t* loop);
1333
1334 typedef enum {
1335 UV_FS_UNKNOWN = -1,
1336 UV_FS_CUSTOM,
1337 UV_FS_OPEN,
1338 UV_FS_CLOSE,
1339 UV_FS_READ,
1340 UV_FS_WRITE,
1341 UV_FS_SENDFILE,
1342 UV_FS_STAT,
1343 UV_FS_LSTAT,
1344 UV_FS_FSTAT,
1345 UV_FS_FTRUNCATE,
1346 UV_FS_UTIME,
1347 UV_FS_FUTIME,
1348 UV_FS_ACCESS,
1349 UV_FS_CHMOD,
1350 UV_FS_FCHMOD,
1351 UV_FS_FSYNC,
1352 UV_FS_FDATASYNC,
1353 UV_FS_UNLINK,
1354 UV_FS_RMDIR,
1355 UV_FS_MKDIR,
1356 UV_FS_MKDTEMP,
1357 UV_FS_RENAME,
1358 UV_FS_SCANDIR,
1359 UV_FS_LINK,
1360 UV_FS_SYMLINK,
1361 UV_FS_READLINK,
1362 UV_FS_CHOWN,
1363 UV_FS_FCHOWN,
1364 UV_FS_REALPATH,
1365 UV_FS_COPYFILE,
1366 UV_FS_LCHOWN,
1367 UV_FS_OPENDIR,
1368 UV_FS_READDIR,
1369 UV_FS_CLOSEDIR,
1370 UV_FS_STATFS,
1371 UV_FS_MKSTEMP,
1372 UV_FS_LUTIME
1373 } uv_fs_type;
1374
1375 struct uv_dir_s {
1376 uv_dirent_t* dirents;
1377 size_t nentries;
1378 void* reserved[4];
1379 UV_DIR_PRIVATE_FIELDS
1380 };
1381
1382 /* uv_fs_t is a subclass of uv_req_t. */
1383 struct uv_fs_s {
1384 UV_REQ_FIELDS
1385 uv_fs_type fs_type;
1386 uv_loop_t* loop;
1387 uv_fs_cb cb;
1388 ssize_t result;
1389 void* ptr;
1390 const char* path;
1391 uv_stat_t statbuf; /* Stores the result of uv_fs_stat() and uv_fs_fstat(). */
1392 UV_FS_PRIVATE_FIELDS
1393 };
1394
1395 UV_EXTERN uv_fs_type uv_fs_get_type(const uv_fs_t*);
1396 UV_EXTERN ssize_t uv_fs_get_result(const uv_fs_t*);
1397 UV_EXTERN int uv_fs_get_system_error(const uv_fs_t*);
1398 UV_EXTERN void* uv_fs_get_ptr(const uv_fs_t*);
1399 UV_EXTERN const char* uv_fs_get_path(const uv_fs_t*);
1400 UV_EXTERN uv_stat_t* uv_fs_get_statbuf(uv_fs_t*);
1401
1402 UV_EXTERN void uv_fs_req_cleanup(uv_fs_t* req);
1403 UV_EXTERN int uv_fs_close(uv_loop_t* loop,
1404 uv_fs_t* req,
1405 uv_file file,
1406 uv_fs_cb cb);
1407 UV_EXTERN int uv_fs_open(uv_loop_t* loop,
1408 uv_fs_t* req,
1409 const char* path,
1410 int flags,
1411 int mode,
1412 uv_fs_cb cb);
1413 UV_EXTERN int uv_fs_read(uv_loop_t* loop,
1414 uv_fs_t* req,
1415 uv_file file,
1416 const uv_buf_t bufs[],
1417 unsigned int nbufs,
1418 int64_t offset,
1419 uv_fs_cb cb);
1420 UV_EXTERN int uv_fs_unlink(uv_loop_t* loop,
1421 uv_fs_t* req,
1422 const char* path,
1423 uv_fs_cb cb);
1424 UV_EXTERN int uv_fs_write(uv_loop_t* loop,
1425 uv_fs_t* req,
1426 uv_file file,
1427 const uv_buf_t bufs[],
1428 unsigned int nbufs,
1429 int64_t offset,
1430 uv_fs_cb cb);
1431 /*
1432 * This flag can be used with uv_fs_copyfile() to return an error if the
1433 * destination already exists.
1434 */
1435 #define UV_FS_COPYFILE_EXCL 0x0001
1436
1437 /*
1438 * This flag can be used with uv_fs_copyfile() to attempt to create a reflink.
1439 * If copy-on-write is not supported, a fallback copy mechanism is used.
1440 */
1441 #define UV_FS_COPYFILE_FICLONE 0x0002
1442
1443 /*
1444 * This flag can be used with uv_fs_copyfile() to attempt to create a reflink.
1445 * If copy-on-write is not supported, an error is returned.
1446 */
1447 #define UV_FS_COPYFILE_FICLONE_FORCE 0x0004
1448
1449 UV_EXTERN int uv_fs_copyfile(uv_loop_t* loop,
1450 uv_fs_t* req,
1451 const char* path,
1452 const char* new_path,
1453 int flags,
1454 uv_fs_cb cb);
1455 UV_EXTERN int uv_fs_mkdir(uv_loop_t* loop,
1456 uv_fs_t* req,
1457 const char* path,
1458 int mode,
1459 uv_fs_cb cb);
1460 UV_EXTERN int uv_fs_mkdtemp(uv_loop_t* loop,
1461 uv_fs_t* req,
1462 const char* tpl,
1463 uv_fs_cb cb);
1464 UV_EXTERN int uv_fs_mkstemp(uv_loop_t* loop,
1465 uv_fs_t* req,
1466 const char* tpl,
1467 uv_fs_cb cb);
1468 UV_EXTERN int uv_fs_rmdir(uv_loop_t* loop,
1469 uv_fs_t* req,
1470 const char* path,
1471 uv_fs_cb cb);
1472 UV_EXTERN int uv_fs_scandir(uv_loop_t* loop,
1473 uv_fs_t* req,
1474 const char* path,
1475 int flags,
1476 uv_fs_cb cb);
1477 UV_EXTERN int uv_fs_scandir_next(uv_fs_t* req,
1478 uv_dirent_t* ent);
1479 UV_EXTERN int uv_fs_opendir(uv_loop_t* loop,
1480 uv_fs_t* req,
1481 const char* path,
1482 uv_fs_cb cb);
1483 UV_EXTERN int uv_fs_readdir(uv_loop_t* loop,
1484 uv_fs_t* req,
1485 uv_dir_t* dir,
1486 uv_fs_cb cb);
1487 UV_EXTERN int uv_fs_closedir(uv_loop_t* loop,
1488 uv_fs_t* req,
1489 uv_dir_t* dir,
1490 uv_fs_cb cb);
1491 UV_EXTERN int uv_fs_stat(uv_loop_t* loop,
1492 uv_fs_t* req,
1493 const char* path,
1494 uv_fs_cb cb);
1495 UV_EXTERN int uv_fs_fstat(uv_loop_t* loop,
1496 uv_fs_t* req,
1497 uv_file file,
1498 uv_fs_cb cb);
1499 UV_EXTERN int uv_fs_rename(uv_loop_t* loop,
1500 uv_fs_t* req,
1501 const char* path,
1502 const char* new_path,
1503 uv_fs_cb cb);
1504 UV_EXTERN int uv_fs_fsync(uv_loop_t* loop,
1505 uv_fs_t* req,
1506 uv_file file,
1507 uv_fs_cb cb);
1508 UV_EXTERN int uv_fs_fdatasync(uv_loop_t* loop,
1509 uv_fs_t* req,
1510 uv_file file,
1511 uv_fs_cb cb);
1512 UV_EXTERN int uv_fs_ftruncate(uv_loop_t* loop,
1513 uv_fs_t* req,
1514 uv_file file,
1515 int64_t offset,
1516 uv_fs_cb cb);
1517 UV_EXTERN int uv_fs_sendfile(uv_loop_t* loop,
1518 uv_fs_t* req,
1519 uv_file out_fd,
1520 uv_file in_fd,
1521 int64_t in_offset,
1522 size_t length,
1523 uv_fs_cb cb);
1524 UV_EXTERN int uv_fs_access(uv_loop_t* loop,
1525 uv_fs_t* req,
1526 const char* path,
1527 int mode,
1528 uv_fs_cb cb);
1529 UV_EXTERN int uv_fs_chmod(uv_loop_t* loop,
1530 uv_fs_t* req,
1531 const char* path,
1532 int mode,
1533 uv_fs_cb cb);
1534 UV_EXTERN int uv_fs_utime(uv_loop_t* loop,
1535 uv_fs_t* req,
1536 const char* path,
1537 double atime,
1538 double mtime,
1539 uv_fs_cb cb);
1540 UV_EXTERN int uv_fs_futime(uv_loop_t* loop,
1541 uv_fs_t* req,
1542 uv_file file,
1543 double atime,
1544 double mtime,
1545 uv_fs_cb cb);
1546 UV_EXTERN int uv_fs_lutime(uv_loop_t* loop,
1547 uv_fs_t* req,
1548 const char* path,
1549 double atime,
1550 double mtime,
1551 uv_fs_cb cb);
1552 UV_EXTERN int uv_fs_lstat(uv_loop_t* loop,
1553 uv_fs_t* req,
1554 const char* path,
1555 uv_fs_cb cb);
1556 UV_EXTERN int uv_fs_link(uv_loop_t* loop,
1557 uv_fs_t* req,
1558 const char* path,
1559 const char* new_path,
1560 uv_fs_cb cb);
1561
1562 /*
1563 * This flag can be used with uv_fs_symlink() on Windows to specify whether
1564 * path argument points to a directory.
1565 */
1566 #define UV_FS_SYMLINK_DIR 0x0001
1567
1568 /*
1569 * This flag can be used with uv_fs_symlink() on Windows to specify whether
1570 * the symlink is to be created using junction points.
1571 */
1572 #define UV_FS_SYMLINK_JUNCTION 0x0002
1573
1574 UV_EXTERN int uv_fs_symlink(uv_loop_t* loop,
1575 uv_fs_t* req,
1576 const char* path,
1577 const char* new_path,
1578 int flags,
1579 uv_fs_cb cb);
1580 UV_EXTERN int uv_fs_readlink(uv_loop_t* loop,
1581 uv_fs_t* req,
1582 const char* path,
1583 uv_fs_cb cb);
1584 UV_EXTERN int uv_fs_realpath(uv_loop_t* loop,
1585 uv_fs_t* req,
1586 const char* path,
1587 uv_fs_cb cb);
1588 UV_EXTERN int uv_fs_fchmod(uv_loop_t* loop,
1589 uv_fs_t* req,
1590 uv_file file,
1591 int mode,
1592 uv_fs_cb cb);
1593 UV_EXTERN int uv_fs_chown(uv_loop_t* loop,
1594 uv_fs_t* req,
1595 const char* path,
1596 uv_uid_t uid,
1597 uv_gid_t gid,
1598 uv_fs_cb cb);
1599 UV_EXTERN int uv_fs_fchown(uv_loop_t* loop,
1600 uv_fs_t* req,
1601 uv_file file,
1602 uv_uid_t uid,
1603 uv_gid_t gid,
1604 uv_fs_cb cb);
1605 UV_EXTERN int uv_fs_lchown(uv_loop_t* loop,
1606 uv_fs_t* req,
1607 const char* path,
1608 uv_uid_t uid,
1609 uv_gid_t gid,
1610 uv_fs_cb cb);
1611 UV_EXTERN int uv_fs_statfs(uv_loop_t* loop,
1612 uv_fs_t* req,
1613 const char* path,
1614 uv_fs_cb cb);
1615
1616
1617 enum uv_fs_event {
1618 UV_RENAME = 1,
1619 UV_CHANGE = 2
1620 };
1621
1622
1623 struct uv_fs_event_s {
1624 UV_HANDLE_FIELDS
1625 /* private */
1626 char* path;
1627 UV_FS_EVENT_PRIVATE_FIELDS
1628 };
1629
1630
1631 /*
1632 * uv_fs_stat() based polling file watcher.
1633 */
1634 struct uv_fs_poll_s {
1635 UV_HANDLE_FIELDS
1636 /* Private, don't touch. */
1637 void* poll_ctx;
1638 };
1639
1640 UV_EXTERN int uv_fs_poll_init(uv_loop_t* loop, uv_fs_poll_t* handle);
1641 UV_EXTERN int uv_fs_poll_start(uv_fs_poll_t* handle,
1642 uv_fs_poll_cb poll_cb,
1643 const char* path,
1644 unsigned int interval);
1645 UV_EXTERN int uv_fs_poll_stop(uv_fs_poll_t* handle);
1646 UV_EXTERN int uv_fs_poll_getpath(uv_fs_poll_t* handle,
1647 char* buffer,
1648 size_t* size);
1649
1650
1651 struct uv_signal_s {
1652 UV_HANDLE_FIELDS
1653 uv_signal_cb signal_cb;
1654 int signum;
1655 UV_SIGNAL_PRIVATE_FIELDS
1656 };
1657
1658 UV_EXTERN int uv_signal_init(uv_loop_t* loop, uv_signal_t* handle);
1659 UV_EXTERN int uv_signal_start(uv_signal_t* handle,
1660 uv_signal_cb signal_cb,
1661 int signum);
1662 UV_EXTERN int uv_signal_start_oneshot(uv_signal_t* handle,
1663 uv_signal_cb signal_cb,
1664 int signum);
1665 UV_EXTERN int uv_signal_stop(uv_signal_t* handle);
1666
1667 UV_EXTERN void uv_loadavg(double avg[3]);
1668
1669
1670 /*
1671 * Flags to be passed to uv_fs_event_start().
1672 */
1673 enum uv_fs_event_flags {
1674 /*
1675 * By default, if the fs event watcher is given a directory name, we will
1676 * watch for all events in that directory. This flags overrides this behavior
1677 * and makes fs_event report only changes to the directory entry itself. This
1678 * flag does not affect individual files watched.
1679 * This flag is currently not implemented yet on any backend.
1680 */
1681 UV_FS_EVENT_WATCH_ENTRY = 1,
1682
1683 /*
1684 * By default uv_fs_event will try to use a kernel interface such as inotify
1685 * or kqueue to detect events. This may not work on remote filesystems such
1686 * as NFS mounts. This flag makes fs_event fall back to calling stat() on a
1687 * regular interval.
1688 * This flag is currently not implemented yet on any backend.
1689 */
1690 UV_FS_EVENT_STAT = 2,
1691
1692 /*
1693 * By default, event watcher, when watching directory, is not registering
1694 * (is ignoring) changes in it's subdirectories.
1695 * This flag will override this behaviour on platforms that support it.
1696 */
1697 UV_FS_EVENT_RECURSIVE = 4
1698 };
1699
1700
1701 UV_EXTERN int uv_fs_event_init(uv_loop_t* loop, uv_fs_event_t* handle);
1702 UV_EXTERN int uv_fs_event_start(uv_fs_event_t* handle,
1703 uv_fs_event_cb cb,
1704 const char* path,
1705 unsigned int flags);
1706 UV_EXTERN int uv_fs_event_stop(uv_fs_event_t* handle);
1707 UV_EXTERN int uv_fs_event_getpath(uv_fs_event_t* handle,
1708 char* buffer,
1709 size_t* size);
1710
1711 UV_EXTERN int uv_ip4_addr(const char* ip, int port, struct sockaddr_in* addr);
1712 UV_EXTERN int uv_ip6_addr(const char* ip, int port, struct sockaddr_in6* addr);
1713
1714 UV_EXTERN int uv_ip4_name(const struct sockaddr_in* src, char* dst, size_t size);
1715 UV_EXTERN int uv_ip6_name(const struct sockaddr_in6* src, char* dst, size_t size);
1716 UV_EXTERN int uv_ip_name(const struct sockaddr* src, char* dst, size_t size);
1717
1718 UV_EXTERN int uv_inet_ntop(int af, const void* src, char* dst, size_t size);
1719 UV_EXTERN int uv_inet_pton(int af, const char* src, void* dst);
1720
1721
1722 struct uv_random_s {
1723 UV_REQ_FIELDS
1724 /* read-only */
1725 uv_loop_t* loop;
1726 /* private */
1727 int status;
1728 void* buf;
1729 size_t buflen;
1730 uv_random_cb cb;
1731 struct uv__work work_req;
1732 };
1733
1734 UV_EXTERN int uv_random(uv_loop_t* loop,
1735 uv_random_t* req,
1736 void *buf,
1737 size_t buflen,
1738 unsigned flags, /* For future extension; must be 0. */
1739 uv_random_cb cb);
1740
1741 #if defined(IF_NAMESIZE)
1742 # define UV_IF_NAMESIZE (IF_NAMESIZE + 1)
1743 #elif defined(IFNAMSIZ)
1744 # define UV_IF_NAMESIZE (IFNAMSIZ + 1)
1745 #else
1746 # define UV_IF_NAMESIZE (16 + 1)
1747 #endif
1748
1749 UV_EXTERN int uv_if_indextoname(unsigned int ifindex,
1750 char* buffer,
1751 size_t* size);
1752 UV_EXTERN int uv_if_indextoiid(unsigned int ifindex,
1753 char* buffer,
1754 size_t* size);
1755
1756 UV_EXTERN int uv_exepath(char* buffer, size_t* size);
1757
1758 UV_EXTERN int uv_cwd(char* buffer, size_t* size);
1759
1760 UV_EXTERN int uv_chdir(const char* dir);
1761
1762 UV_EXTERN uint64_t uv_get_free_memory(void);
1763 UV_EXTERN uint64_t uv_get_total_memory(void);
1764 UV_EXTERN uint64_t uv_get_constrained_memory(void);
1765 UV_EXTERN uint64_t uv_get_available_memory(void);
1766
1767 UV_EXTERN int uv_clock_gettime(uv_clock_id clock_id, uv_timespec64_t* ts);
1768 UV_EXTERN uint64_t uv_hrtime(void);
1769 UV_EXTERN void uv_sleep(unsigned int msec);
1770
1771 UV_EXTERN void uv_disable_stdio_inheritance(void);
1772
1773 UV_EXTERN int uv_dlopen(const char* filename, uv_lib_t* lib);
1774 UV_EXTERN void uv_dlclose(uv_lib_t* lib);
1775 UV_EXTERN int uv_dlsym(uv_lib_t* lib, const char* name, void** ptr);
1776 UV_EXTERN const char* uv_dlerror(const uv_lib_t* lib);
1777
1778 UV_EXTERN int uv_mutex_init(uv_mutex_t* handle);
1779 UV_EXTERN int uv_mutex_init_recursive(uv_mutex_t* handle);
1780 UV_EXTERN void uv_mutex_destroy(uv_mutex_t* handle);
1781 UV_EXTERN void uv_mutex_lock(uv_mutex_t* handle);
1782 UV_EXTERN int uv_mutex_trylock(uv_mutex_t* handle);
1783 UV_EXTERN void uv_mutex_unlock(uv_mutex_t* handle);
1784
1785 UV_EXTERN int uv_rwlock_init(uv_rwlock_t* rwlock);
1786 UV_EXTERN void uv_rwlock_destroy(uv_rwlock_t* rwlock);
1787 UV_EXTERN void uv_rwlock_rdlock(uv_rwlock_t* rwlock);
1788 UV_EXTERN int uv_rwlock_tryrdlock(uv_rwlock_t* rwlock);
1789 UV_EXTERN void uv_rwlock_rdunlock(uv_rwlock_t* rwlock);
1790 UV_EXTERN void uv_rwlock_wrlock(uv_rwlock_t* rwlock);
1791 UV_EXTERN int uv_rwlock_trywrlock(uv_rwlock_t* rwlock);
1792 UV_EXTERN void uv_rwlock_wrunlock(uv_rwlock_t* rwlock);
1793
1794 UV_EXTERN int uv_sem_init(uv_sem_t* sem, unsigned int value);
1795 UV_EXTERN void uv_sem_destroy(uv_sem_t* sem);
1796 UV_EXTERN void uv_sem_post(uv_sem_t* sem);
1797 UV_EXTERN void uv_sem_wait(uv_sem_t* sem);
1798 UV_EXTERN int uv_sem_trywait(uv_sem_t* sem);
1799
1800 UV_EXTERN int uv_cond_init(uv_cond_t* cond);
1801 UV_EXTERN void uv_cond_destroy(uv_cond_t* cond);
1802 UV_EXTERN void uv_cond_signal(uv_cond_t* cond);
1803 UV_EXTERN void uv_cond_broadcast(uv_cond_t* cond);
1804
1805 UV_EXTERN int uv_barrier_init(uv_barrier_t* barrier, unsigned int count);
1806 UV_EXTERN void uv_barrier_destroy(uv_barrier_t* barrier);
1807 UV_EXTERN int uv_barrier_wait(uv_barrier_t* barrier);
1808
1809 UV_EXTERN void uv_cond_wait(uv_cond_t* cond, uv_mutex_t* mutex);
1810 UV_EXTERN int uv_cond_timedwait(uv_cond_t* cond,
1811 uv_mutex_t* mutex,
1812 uint64_t timeout);
1813
1814 UV_EXTERN void uv_once(uv_once_t* guard, void (*callback)(void));
1815
1816 UV_EXTERN int uv_key_create(uv_key_t* key);
1817 UV_EXTERN void uv_key_delete(uv_key_t* key);
1818 UV_EXTERN void* uv_key_get(uv_key_t* key);
1819 UV_EXTERN void uv_key_set(uv_key_t* key, void* value);
1820
1821 UV_EXTERN int uv_gettimeofday(uv_timeval64_t* tv);
1822
1823 typedef void (*uv_thread_cb)(void* arg);
1824
1825 UV_EXTERN int uv_thread_create(uv_thread_t* tid, uv_thread_cb entry, void* arg);
1826
1827 typedef enum {
1828 UV_THREAD_NO_FLAGS = 0x00,
1829 UV_THREAD_HAS_STACK_SIZE = 0x01
1830 } uv_thread_create_flags;
1831
1832 struct uv_thread_options_s {
1833 unsigned int flags;
1834 size_t stack_size;
1835 /* More fields may be added at any time. */
1836 };
1837
1838 typedef struct uv_thread_options_s uv_thread_options_t;
1839
1840 UV_EXTERN int uv_thread_create_ex(uv_thread_t* tid,
1841 const uv_thread_options_t* params,
1842 uv_thread_cb entry,
1843 void* arg);
1844 UV_EXTERN int uv_thread_setaffinity(uv_thread_t* tid,
1845 char* cpumask,
1846 char* oldmask,
1847 size_t mask_size);
1848 UV_EXTERN int uv_thread_getaffinity(uv_thread_t* tid,
1849 char* cpumask,
1850 size_t mask_size);
1851 UV_EXTERN int uv_thread_getcpu(void);
1852 UV_EXTERN uv_thread_t uv_thread_self(void);
1853 UV_EXTERN int uv_thread_join(uv_thread_t *tid);
1854 UV_EXTERN int uv_thread_equal(const uv_thread_t* t1, const uv_thread_t* t2);
1855
1856 /* The presence of these unions force similar struct layout. */
1857 #define XX(_, name) uv_ ## name ## _t name;
1858 union uv_any_handle {
1859 UV_HANDLE_TYPE_MAP(XX)
1860 };
1861
1862 union uv_any_req {
1863 UV_REQ_TYPE_MAP(XX)
1864 };
1865 #undef XX
1866
1867
1868 struct uv_loop_s {
1869 /* User data - use this for whatever. */
1870 void* data;
1871 /* Loop reference counting. */
1872 unsigned int active_handles;
1873 struct uv__queue handle_queue;
1874 union {
1875 void* unused;
1876 unsigned int count;
1877 } active_reqs;
1878 /* Internal storage for future extensions. */
1879 void* internal_fields;
1880 /* Internal flag to signal loop stop. */
1881 unsigned int stop_flag;
1882 UV_LOOP_PRIVATE_FIELDS
1883 };
1884
1885 UV_EXTERN void* uv_loop_get_data(const uv_loop_t*);
1886 UV_EXTERN void uv_loop_set_data(uv_loop_t*, void* data);
1887
1888 /* String utilities needed internally for dealing with Windows. */
1889 size_t uv_utf16_length_as_wtf8(const uint16_t* utf16,
1890 ssize_t utf16_len);
1891 int uv_utf16_to_wtf8(const uint16_t* utf16,
1892 ssize_t utf16_len,
1893 char** wtf8_ptr,
1894 size_t* wtf8_len_ptr);
1895 ssize_t uv_wtf8_length_as_utf16(const char* wtf8);
1896 void uv_wtf8_to_utf16(const char* wtf8,
1897 uint16_t* utf16,
1898 size_t utf16_len);
1899
1900 /* Don't export the private CPP symbols. */
1901 #undef UV_HANDLE_TYPE_PRIVATE
1902 #undef UV_REQ_TYPE_PRIVATE
1903 #undef UV_REQ_PRIVATE_FIELDS
1904 #undef UV_STREAM_PRIVATE_FIELDS
1905 #undef UV_TCP_PRIVATE_FIELDS
1906 #undef UV_PREPARE_PRIVATE_FIELDS
1907 #undef UV_CHECK_PRIVATE_FIELDS
1908 #undef UV_IDLE_PRIVATE_FIELDS
1909 #undef UV_ASYNC_PRIVATE_FIELDS
1910 #undef UV_TIMER_PRIVATE_FIELDS
1911 #undef UV_GETADDRINFO_PRIVATE_FIELDS
1912 #undef UV_GETNAMEINFO_PRIVATE_FIELDS
1913 #undef UV_FS_REQ_PRIVATE_FIELDS
1914 #undef UV_WORK_PRIVATE_FIELDS
1915 #undef UV_FS_EVENT_PRIVATE_FIELDS
1916 #undef UV_SIGNAL_PRIVATE_FIELDS
1917 #undef UV_LOOP_PRIVATE_FIELDS
1918 #undef UV_LOOP_PRIVATE_PLATFORM_FIELDS
1919 #undef UV__ERR
1920
1921 #ifdef __cplusplus
1922 }
1923 #endif
1924 #endif /* UV_H */
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