MySQL 8.3.0
Source Code Documentation
retry.h
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1/* Copyright (c) 2012, 2023, Oracle and/or its affiliates.
2
3 This program is free software; you can redistribute it and/or modify
4 it under the terms of the GNU General Public License, version 2.0,
5 as published by the Free Software Foundation.
6
7 This program is also distributed with certain software (including
8 but not limited to OpenSSL) that is licensed under separate terms,
9 as designated in a particular file or component or in included license
10 documentation. The authors of MySQL hereby grant you an additional
11 permission to link the program and your derivative works with the
12 separately licensed software that they have included with MySQL.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License, version 2.0, for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
22
23#ifndef RETRY_H
24#define RETRY_H
25
26#include "xcom/result.h"
27#include "xcom/task_debug.h"
28#include "xcom/task_os.h"
29
30#ifndef XCOM_WITHOUT_OPENSSL
31
32static inline int can_retry(int err) {
33 if (is_ssl_err(err))
34 return from_ssl_err(err) == SSL_ERROR_WANT_WRITE ||
35 from_ssl_err(err) == SSL_ERROR_WANT_READ;
36 else
39}
40
41static inline int can_retry_read(int err) {
42 if (is_ssl_err(err))
43 return from_ssl_err(err) == SSL_ERROR_WANT_READ;
44 else
47}
48
49static inline int can_retry_write(int err) {
50 if (is_ssl_err(err))
51 return from_ssl_err(err) == SSL_ERROR_WANT_WRITE;
52 else
55}
56#else
57static inline int can_retry(int err) {
58 int retval = from_errno(err) == SOCK_EAGAIN ||
61 if (!retval) IFDBG(D_NONE, FN; STRLIT("cannot retry "); NDBG(err, d));
62 return retval;
63}
64
65static inline int can_retry_read(int err) {
66 int retval = from_errno(err) == SOCK_EAGAIN ||
69 if (!retval) IFDBG(D_NONE, FN; STRLIT("cannot retry "); NDBG(err, d));
70 return retval;
71}
72
73static inline int can_retry_write(int err) {
74 int retval = from_errno(err) == SOCK_EAGAIN ||
77 if (!retval) IFDBG(D_NONE, FN; STRLIT("cannot retry "); NDBG(err, d));
78 return retval;
79}
80#endif
81
82#endif
#define IFDBG(mask, body)
Definition: gcs_debug.h:278
#define FN
Definition: gcs_debug.h:307
@ D_NONE
Definition: gcs_debug.h:173
#define STRLIT(x)
Definition: gcs_debug.h:315
#define NDBG(x, f)
Definition: gcs_debug.h:317
static Value err()
Create a Value object that represents an error condition.
Definition: json_binary.cc:926
static int is_ssl_err(int err)
Definition: result.h:45
static int from_ssl_err(int err)
Definition: result.h:43
static int from_errno(int err)
Definition: result.h:41
static int can_retry_write(int err)
Definition: retry.h:49
static int can_retry(int err)
Definition: retry.h:32
static int can_retry_read(int err)
Definition: retry.h:41
#define SOCK_EWOULDBLOCK
Definition: task_os.h:91
#define SOCK_EAGAIN
Definition: task_os.h:90
#define SOCK_EINTR
Definition: task_os.h:89