MySQL 9.0.0
Source Code Documentation
xcom_input_request.h
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1/* Copyright (c) 2018, 2024, Oracle and/or its affiliates.
2
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5 as published by the Free Software Foundation.
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12 separately licensed software that they have either included with
13 the program or referenced in the documentation.
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15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License, version 2.0, for more details.
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20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
23
24#ifndef XCOM_INPUT_REQUEST_H
25#define XCOM_INPUT_REQUEST_H
26
27#include "xcom/pax_msg.h"
28
29/**
30 * A request directed to XCom through the input channel.
31 */
34
35/**
36 * The function type that XCom will use to reply to a request.
37 */
39 pax_msg *payload);
40
41/**
42 * Creates a new XCom request.
43 *
44 * Takes ownership of @c a.
45 *
46 * @param a the request's app_data payload
47 * @param reply_function the function used to reply to the request
48 * @param reply_arg opaque argument to the reply_function
49 * @retval xcom_input_request_ptr if successful
50 * @retval NULL if unsuccessful
51 */
54 void *reply_arg);
55
56/**
57 * Frees the given request and its payload.
58 *
59 * @param request the request to free
60 */
62
63/**
64 * Links @c request to the list of requests @c next.
65 *
66 * @param request the request to link
67 * @param next the list to be linked to
68 */
71
72/**
73 * Unlinks @c request from its list.
74 *
75 * @param request the request to unlink
76 * @returns the tail of the list the request was unlinked from
77 */
80
81/**
82 * Extract the given request's payload.
83 *
84 * Transfers ownership of the result to the caller.
85 *
86 * @param request the request from which to extract the payload
87 * @returns the request's app_data payload
88 */
91
92/**
93 * Replies to the request using the strategy chosen by the request's origin.
94 *
95 * @param request the request to reply to
96 * @param payload the payload of the reply
97 */
99
100#endif /* XCOM_INPUT_REQUEST_H */
struct pax_msg pax_msg
Definition: site_struct.h:37
Definition: xcom_input_request.cc:31
xcom_input_reply_function_ptr reply_function
Definition: xcom_input_request.cc:33
app_data_ptr a
Definition: xcom_input_request.cc:32
void * reply_arg
Definition: xcom_input_request.cc:34
struct xcom_input_request * next
Definition: xcom_input_request.cc:35
void xcom_input_request_set_next(xcom_input_request_ptr request, xcom_input_request_ptr next)
Links request to the list of requests next.
Definition: xcom_input_request.cc:63
xcom_input_request_ptr xcom_input_request_extract_next(xcom_input_request_ptr request)
Unlinks request from its list.
Definition: xcom_input_request.cc:68
void xcom_input_request_reply(xcom_input_request_ptr request, pax_msg *payload)
Replies to the request using the strategy chosen by the request's origin.
Definition: xcom_input_request.cc:82
xcom_input_request_ptr xcom_input_request_new(app_data_ptr a, xcom_input_reply_function_ptr reply_function, void *reply_arg)
Creates a new XCom request.
Definition: xcom_input_request.cc:38
app_data_ptr xcom_input_request_extract_app_data(xcom_input_request_ptr request)
Extract the given request's payload.
Definition: xcom_input_request.cc:75
void xcom_input_request_free(xcom_input_request_ptr request)
Frees the given request and its payload.
Definition: xcom_input_request.cc:51
struct xcom_input_request * xcom_input_request_ptr
Definition: xcom_input_request.h:33
void(* xcom_input_reply_function_ptr)(void *reply_arg, pax_msg *payload)
The function type that XCom will use to reply to a request.
Definition: xcom_input_request.h:38