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
|
/*
*
* Copyright 2015-2016, 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.
*
*/
#include <grpc/support/port_platform.h>
#ifdef GPR_POSIX_SOCKET
#include "src/core/iomgr/workqueue.h"
#include <stdio.h>
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include <grpc/support/useful.h>
#include "src/core/iomgr/fd_posix.h"
#include "src/core/iomgr/pollset_posix.h"
static void on_readable(grpc_exec_ctx *exec_ctx, void *arg, bool success);
grpc_workqueue *grpc_workqueue_create(grpc_exec_ctx *exec_ctx) {
char name[32];
grpc_workqueue *workqueue = gpr_malloc(sizeof(grpc_workqueue));
gpr_ref_init(&workqueue->refs, 1);
gpr_mu_init(&workqueue->mu);
workqueue->closure_list.head = workqueue->closure_list.tail = NULL;
grpc_wakeup_fd_init(&workqueue->wakeup_fd);
sprintf(name, "workqueue:%p", (void *)workqueue);
workqueue->wakeup_read_fd =
grpc_fd_create(GRPC_WAKEUP_FD_GET_READ_FD(&workqueue->wakeup_fd), name);
grpc_closure_init(&workqueue->read_closure, on_readable, workqueue);
grpc_fd_notify_on_read(exec_ctx, workqueue->wakeup_read_fd,
&workqueue->read_closure);
return workqueue;
}
static void workqueue_destroy(grpc_exec_ctx *exec_ctx,
grpc_workqueue *workqueue) {
GPR_ASSERT(grpc_closure_list_empty(workqueue->closure_list));
grpc_fd_shutdown(exec_ctx, workqueue->wakeup_read_fd);
}
#ifdef GRPC_WORKQUEUE_REFCOUNT_DEBUG
void grpc_workqueue_ref(grpc_workqueue *workqueue, const char *file, int line,
const char *reason) {
gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG, "WORKQUEUE:%p ref %d -> %d %s",
workqueue, (int)workqueue->refs.count, (int)workqueue->refs.count + 1,
reason);
#else
void grpc_workqueue_ref(grpc_workqueue *workqueue) {
#endif
gpr_ref(&workqueue->refs);
}
#ifdef GRPC_WORKQUEUE_REFCOUNT_DEBUG
void grpc_workqueue_unref(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue,
const char *file, int line, const char *reason) {
gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG, "WORKQUEUE:%p unref %d -> %d %s",
workqueue, (int)workqueue->refs.count, (int)workqueue->refs.count - 1,
reason);
#else
void grpc_workqueue_unref(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue) {
#endif
if (gpr_unref(&workqueue->refs)) {
workqueue_destroy(exec_ctx, workqueue);
}
}
void grpc_workqueue_add_to_pollset(grpc_exec_ctx *exec_ctx,
grpc_workqueue *workqueue,
grpc_pollset *pollset) {
grpc_pollset_add_fd(exec_ctx, pollset, workqueue->wakeup_read_fd);
}
void grpc_workqueue_flush(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue) {
gpr_mu_lock(&workqueue->mu);
if (grpc_closure_list_empty(workqueue->closure_list)) {
grpc_wakeup_fd_wakeup(&workqueue->wakeup_fd);
}
grpc_exec_ctx_enqueue_list(exec_ctx, &workqueue->closure_list, NULL);
gpr_mu_unlock(&workqueue->mu);
}
static void on_readable(grpc_exec_ctx *exec_ctx, void *arg, bool success) {
grpc_workqueue *workqueue = arg;
if (!success) {
gpr_mu_destroy(&workqueue->mu);
/* HACK: let wakeup_fd code know that we stole the fd */
workqueue->wakeup_fd.read_fd = 0;
grpc_wakeup_fd_destroy(&workqueue->wakeup_fd);
grpc_fd_orphan(exec_ctx, workqueue->wakeup_read_fd, NULL, NULL, "destroy");
gpr_free(workqueue);
} else {
gpr_mu_lock(&workqueue->mu);
grpc_exec_ctx_enqueue_list(exec_ctx, &workqueue->closure_list, NULL);
grpc_wakeup_fd_consume_wakeup(&workqueue->wakeup_fd);
gpr_mu_unlock(&workqueue->mu);
grpc_fd_notify_on_read(exec_ctx, workqueue->wakeup_read_fd,
&workqueue->read_closure);
}
}
void grpc_workqueue_push(grpc_workqueue *workqueue, grpc_closure *closure,
int success) {
gpr_mu_lock(&workqueue->mu);
if (grpc_closure_list_empty(workqueue->closure_list)) {
grpc_wakeup_fd_wakeup(&workqueue->wakeup_fd);
}
grpc_closure_list_add(&workqueue->closure_list, closure, success);
gpr_mu_unlock(&workqueue->mu);
}
#endif /* GPR_POSIX_SOCKET */
|
