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
|
/*
*
* Copyright 2015, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef __GRPC_INTERNAL_IOMGR_POLLSET_KICK_H_
#define __GRPC_INTERNAL_IOMGR_POLLSET_KICK_H_
#include <grpc/support/port_platform.h>
/* This is an abstraction around the typical pipe mechanism for waking up a
thread sitting in a poll() style call. */
#ifdef GPR_POSIX_SOCKET
#include "src/core/iomgr/pollset_kick_posix.h"
#else
#error "No pollset kick support on platform"
#endif
void grpc_pollset_kick_global_init(void);
void grpc_pollset_kick_global_destroy(void);
void grpc_pollset_kick_init(grpc_pollset_kick_state *kick_state);
void grpc_pollset_kick_destroy(grpc_pollset_kick_state *kick_state);
/* Must be called before entering poll(). If return value is -1, this consumed
an existing kick. Otherwise the return value is an FD to add to the poll set.
*/
int grpc_pollset_kick_pre_poll(grpc_pollset_kick_state *kick_state);
/* Consume an existing kick. Must be called after poll returns that the fd was
readable, and before calling kick_post_poll. */
void grpc_pollset_kick_consume(grpc_pollset_kick_state *kick_state);
/* Must be called after pre_poll, and after consume if applicable */
void grpc_pollset_kick_post_poll(grpc_pollset_kick_state *kick_state);
void grpc_pollset_kick_kick(grpc_pollset_kick_state *kick_state);
#endif /* __GRPC_INTERNAL_IOMGR_POLLSET_KICK_H_ */
|
