summaryrefslogtreecommitdiffstats
path: root/Utilities/cmlibuv/src/win/handle-inl.h
blob: 82c657d579fb047b2649eacb0642fabe8c9e193c (plain)
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
/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */

#ifndef UV_WIN_HANDLE_INL_H_
#define UV_WIN_HANDLE_INL_H_

#include <assert.h>
#include <io.h>

#include "uv.h"
#include "internal.h"


#define DECREASE_ACTIVE_COUNT(loop, handle)                             \
  do {                                                                  \
    if (--(handle)->activecnt == 0 &&                                   \
        !((handle)->flags & UV_HANDLE_CLOSING)) {                       \
      uv__handle_stop((handle));                                        \
    }                                                                   \
    assert((handle)->activecnt >= 0);                                   \
  } while (0)


#define INCREASE_ACTIVE_COUNT(loop, handle)                             \
  do {                                                                  \
    if ((handle)->activecnt++ == 0) {                                   \
      uv__handle_start((handle));                                       \
    }                                                                   \
    assert((handle)->activecnt > 0);                                    \
  } while (0)


#define DECREASE_PENDING_REQ_COUNT(handle)                              \
  do {                                                                  \
    assert(handle->reqs_pending > 0);                                   \
    handle->reqs_pending--;                                             \
                                                                        \
    if (handle->flags & UV_HANDLE_CLOSING &&                            \
        handle->reqs_pending == 0) {                                    \
      uv_want_endgame(loop, (uv_handle_t*)handle);                      \
    }                                                                   \
  } while (0)


#define uv__handle_closing(handle)                                      \
  do {                                                                  \
    assert(!((handle)->flags & UV_HANDLE_CLOSING));                     \
                                                                        \
    if (!(((handle)->flags & UV_HANDLE_ACTIVE) &&                       \
          ((handle)->flags & UV_HANDLE_REF)))                           \
      uv__active_handle_add((uv_handle_t*) (handle));                   \
                                                                        \
    (handle)->flags |= UV_HANDLE_CLOSING;                               \
    (handle)->flags &= ~UV_HANDLE_ACTIVE;                               \
  } while (0)


#define uv__handle_close(handle)                                        \
  do {                                                                  \
    QUEUE_REMOVE(&(handle)->handle_queue);                              \
    uv__active_handle_rm((uv_handle_t*) (handle));                      \
                                                                        \
    (handle)->flags |= UV_HANDLE_CLOSED;                                \
                                                                        \
    if ((handle)->close_cb)                                             \
      (handle)->close_cb((uv_handle_t*) (handle));                      \
  } while (0)


INLINE static void uv_want_endgame(uv_loop_t* loop, uv_handle_t* handle) {
  if (!(handle->flags & UV_HANDLE_ENDGAME_QUEUED)) {
    handle->flags |= UV_HANDLE_ENDGAME_QUEUED;

    handle->endgame_next = loop->endgame_handles;
    loop->endgame_handles = handle;
  }
}


INLINE static void uv_process_endgames(uv_loop_t* loop) {
  uv_handle_t* handle;

  while (loop->endgame_handles) {
    handle = loop->endgame_handles;
    loop->endgame_handles = handle->endgame_next;

    handle->flags &= ~UV_HANDLE_ENDGAME_QUEUED;

    switch (handle->type) {
      case UV_TCP:
        uv_tcp_endgame(loop, (uv_tcp_t*) handle);
        break;

      case UV_NAMED_PIPE:
        uv_pipe_endgame(loop, (uv_pipe_t*) handle);
        break;

      case UV_TTY:
        uv_tty_endgame(loop, (uv_tty_t*) handle);
        break;

      case UV_UDP:
        uv_udp_endgame(loop, (uv_udp_t*) handle);
        break;

      case UV_POLL:
        uv_poll_endgame(loop, (uv_poll_t*) handle);
        break;

      case UV_TIMER:
        uv__timer_close((uv_timer_t*) handle);
        uv__handle_close(handle);
        break;

      case UV_PREPARE:
      case UV_CHECK:
      case UV_IDLE:
        uv_loop_watcher_endgame(loop, handle);
        break;

      case UV_ASYNC:
        uv_async_endgame(loop, (uv_async_t*) handle);
        break;

      case UV_SIGNAL:
        uv_signal_endgame(loop, (uv_signal_t*) handle);
        break;

      case UV_PROCESS:
        uv_process_endgame(loop, (uv_process_t*) handle);
        break;

      case UV_FS_EVENT:
        uv_fs_event_endgame(loop, (uv_fs_event_t*) handle);
        break;

      case UV_FS_POLL:
        uv__fs_poll_endgame(loop, (uv_fs_poll_t*) handle);
        break;

      default:
        assert(0);
        break;
    }
  }
}

INLINE static HANDLE uv__get_osfhandle(int fd)
{
  /* _get_osfhandle() raises an assert in debug builds if the FD is invalid.
   * But it also correctly checks the FD and returns INVALID_HANDLE_VALUE for
   * invalid FDs in release builds (or if you let the assert continue). So this
   * wrapper function disables asserts when calling _get_osfhandle. */

  HANDLE handle;
  UV_BEGIN_DISABLE_CRT_ASSERT();
  handle = (HANDLE) _get_osfhandle(fd);
  UV_END_DISABLE_CRT_ASSERT();
  return handle;
}

#endif /* UV_WIN_HANDLE_INL_H_ */