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
|
/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include "src/core/lib/iomgr/closure.h"
#include <assert.h>
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include "src/core/lib/profiling/timers.h"
#ifndef NDEBUG
grpc_core::TraceFlag grpc_trace_closure(false, "closure");
#endif
#ifndef NDEBUG
grpc_closure *grpc_closure_init(const char *file, int line,
grpc_closure *closure, grpc_iomgr_cb_func cb,
void *cb_arg,
grpc_closure_scheduler *scheduler) {
#else
grpc_closure *grpc_closure_init(grpc_closure *closure, grpc_iomgr_cb_func cb,
void *cb_arg,
grpc_closure_scheduler *scheduler) {
#endif
closure->cb = cb;
closure->cb_arg = cb_arg;
closure->scheduler = scheduler;
#ifndef NDEBUG
closure->scheduled = false;
closure->file_initiated = NULL;
closure->line_initiated = 0;
closure->run = false;
closure->file_created = file;
closure->line_created = line;
#endif
return closure;
}
void grpc_closure_list_init(grpc_closure_list *closure_list) {
closure_list->head = closure_list->tail = NULL;
}
bool grpc_closure_list_append(grpc_closure_list *closure_list,
grpc_closure *closure, grpc_error *error) {
if (closure == NULL) {
GRPC_ERROR_UNREF(error);
return false;
}
closure->error_data.error = error;
closure->next_data.next = NULL;
bool was_empty = (closure_list->head == NULL);
if (was_empty) {
closure_list->head = closure;
} else {
closure_list->tail->next_data.next = closure;
}
closure_list->tail = closure;
return was_empty;
}
void grpc_closure_list_fail_all(grpc_closure_list *list,
grpc_error *forced_failure) {
for (grpc_closure *c = list->head; c != NULL; c = c->next_data.next) {
if (c->error_data.error == GRPC_ERROR_NONE) {
c->error_data.error = GRPC_ERROR_REF(forced_failure);
}
}
GRPC_ERROR_UNREF(forced_failure);
}
bool grpc_closure_list_empty(grpc_closure_list closure_list) {
return closure_list.head == NULL;
}
void grpc_closure_list_move(grpc_closure_list *src, grpc_closure_list *dst) {
if (src->head == NULL) {
return;
}
if (dst->head == NULL) {
*dst = *src;
} else {
dst->tail->next_data.next = src->head;
dst->tail = src->tail;
}
src->head = src->tail = NULL;
}
typedef struct {
grpc_iomgr_cb_func cb;
void *cb_arg;
grpc_closure wrapper;
} wrapped_closure;
static void closure_wrapper(grpc_exec_ctx *exec_ctx, void *arg,
grpc_error *error) {
wrapped_closure *wc = (wrapped_closure *)arg;
grpc_iomgr_cb_func cb = wc->cb;
void *cb_arg = wc->cb_arg;
gpr_free(wc);
cb(exec_ctx, cb_arg, error);
}
#ifndef NDEBUG
grpc_closure *grpc_closure_create(const char *file, int line,
grpc_iomgr_cb_func cb, void *cb_arg,
grpc_closure_scheduler *scheduler) {
#else
grpc_closure *grpc_closure_create(grpc_iomgr_cb_func cb, void *cb_arg,
grpc_closure_scheduler *scheduler) {
#endif
wrapped_closure *wc = (wrapped_closure *)gpr_malloc(sizeof(*wc));
wc->cb = cb;
wc->cb_arg = cb_arg;
#ifndef NDEBUG
grpc_closure_init(file, line, &wc->wrapper, closure_wrapper, wc, scheduler);
#else
grpc_closure_init(&wc->wrapper, closure_wrapper, wc, scheduler);
#endif
return &wc->wrapper;
}
#ifndef NDEBUG
void grpc_closure_run(const char *file, int line, grpc_exec_ctx *exec_ctx,
grpc_closure *c, grpc_error *error) {
#else
void grpc_closure_run(grpc_exec_ctx *exec_ctx, grpc_closure *c,
grpc_error *error) {
#endif
GPR_TIMER_BEGIN("grpc_closure_run", 0);
if (c != NULL) {
#ifndef NDEBUG
c->file_initiated = file;
c->line_initiated = line;
c->run = true;
#endif
assert(c->cb);
c->scheduler->vtable->run(exec_ctx, c, error);
} else {
GRPC_ERROR_UNREF(error);
}
GPR_TIMER_END("grpc_closure_run", 0);
}
#ifndef NDEBUG
void grpc_closure_sched(const char *file, int line, grpc_exec_ctx *exec_ctx,
grpc_closure *c, grpc_error *error) {
#else
void grpc_closure_sched(grpc_exec_ctx *exec_ctx, grpc_closure *c,
grpc_error *error) {
#endif
GPR_TIMER_BEGIN("grpc_closure_sched", 0);
if (c != NULL) {
#ifndef NDEBUG
if (c->scheduled) {
gpr_log(GPR_ERROR,
"Closure already scheduled. (closure: %p, created: [%s:%d], "
"previously scheduled at: [%s: %d] run?: %s",
c, c->file_created, c->line_created, c->file_initiated,
c->line_initiated, c->run ? "true" : "false");
abort();
}
c->scheduled = true;
c->file_initiated = file;
c->line_initiated = line;
c->run = false;
#endif
assert(c->cb);
c->scheduler->vtable->sched(exec_ctx, c, error);
} else {
GRPC_ERROR_UNREF(error);
}
GPR_TIMER_END("grpc_closure_sched", 0);
}
#ifndef NDEBUG
void grpc_closure_list_sched(const char *file, int line,
grpc_exec_ctx *exec_ctx, grpc_closure_list *list) {
#else
void grpc_closure_list_sched(grpc_exec_ctx *exec_ctx, grpc_closure_list *list) {
#endif
grpc_closure *c = list->head;
while (c != NULL) {
grpc_closure *next = c->next_data.next;
#ifndef NDEBUG
if (c->scheduled) {
gpr_log(GPR_ERROR,
"Closure already scheduled. (closure: %p, created: [%s:%d], "
"previously scheduled at: [%s: %d] run?: %s",
c, c->file_created, c->line_created, c->file_initiated,
c->line_initiated, c->run ? "true" : "false");
abort();
}
c->scheduled = true;
c->file_initiated = file;
c->line_initiated = line;
c->run = false;
#endif
assert(c->cb);
c->scheduler->vtable->sched(exec_ctx, c, c->error_data.error);
c = next;
}
list->head = list->tail = NULL;
}
|
