1 /*
2 * Copyright (c) 2009 Red Hat, Inc.
3 *
4 * All rights reserved.
5 *
6 * Author: Steven Dake (sdake@redhat.com)
7 *
8 * libqb is free software: you can redistribute it and/or modify
9 * it under the terms of the GNU Lesser General Public License as published by
10 * the Free Software Foundation, either version 2.1 of the License, or
11 * (at your option) any later version.
12 *
13 * libqb is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public License
19 * along with libqb. If not, see <http://www.gnu.org/licenses/>.
20 */
21 #include "os_base.h"
22 #include <signal.h>
23
24 #include <qb/qblog.h>
25 #include <qb/qbutil.h>
26 #include <qb/qbipcc.h>
27
28 #define ITERATIONS 10000
29 pid_t mypid;
30 int32_t blocking = QB_TRUE;
31 int32_t events = QB_FALSE;
32 int32_t verbose = 0;
33 static qb_ipcc_connection_t *conn;
34 #define MAX_MSG_SIZE (8192*128)
35 static qb_util_stopwatch_t *sw;
36
37 static void bm_finish(const char *operation, int32_t size)
38 {
39 float ops_per_sec;
40 float mbs_per_sec;
41 float elapsed;
42
43 qb_util_stopwatch_stop(sw);
|
(1) Event zero_return: |
Function call "qb_util_stopwatch_sec_elapsed_get(sw)" returns 0.0. [details] |
|
(2) Event assign: |
Assigning: "elapsed" = "qb_util_stopwatch_sec_elapsed_get(sw)". |
| Also see events: |
[divide_by_zero] |
44 elapsed = qb_util_stopwatch_sec_elapsed_get(sw);
45 ops_per_sec = ((float)ITERATIONS) / elapsed;
|
(3) Event divide_by_zero: |
In expression "10000f * size / elapsed", division by expression "elapsed" which may be zero results in either +infinity, -infinity, or NaN. |
| Also see events: |
[zero_return][assign] |
46 mbs_per_sec = ((((float)ITERATIONS) * size) / elapsed) / (1024.0 * 1024.0);
47
48 qb_log(LOG_INFO, "write size, %d, OPs/sec, %9.3f, MB/sec, %9.3f",
49 size, ops_per_sec, mbs_per_sec);
50 }
51
52 struct my_req {
53 struct qb_ipc_request_header hdr;
54 char message[1024 * 1024];
55 };
56
57 static struct my_req request;
58
59 static int32_t bmc_send_nozc(uint32_t size)
60 {
61 struct qb_ipc_response_header res_header;
62 int32_t res;
63
64 request.hdr.id = QB_IPC_MSG_USER_START + 3;
65 request.hdr.size = sizeof(struct qb_ipc_request_header) + size;
66
67 repeat_send:
68 res = qb_ipcc_send(conn, &request, request.hdr.size);
69 if (res < 0) {
70 if (res == -EAGAIN) {
71 goto repeat_send;
72 } else if (res == -EINVAL || res == -EINTR || res == -ENOTCONN) {
73 qb_perror(LOG_ERR, "qb_ipcc_send");
74 return -1;
75 } else {
76 errno = -res;
77 qb_perror(LOG_ERR, "qb_ipcc_send");
78 goto repeat_send;
79 }
80 }
81
82 if (blocking) {
83 res = qb_ipcc_recv(conn,
84 &res_header,
85 sizeof(struct qb_ipc_response_header), -1);
86 if (res == -EINTR) {
87 return -1;
88 }
89 if (res < 0) {
90 qb_perror(LOG_ERR, "qb_ipcc_recv");
91 }
92 assert(res == sizeof(struct qb_ipc_response_header));
93 assert(res_header.id == 13);
94 assert(res_header.size == sizeof(struct qb_ipc_response_header));
95 }
96 if (events) {
97 res = qb_ipcc_event_recv(conn,
98 &res_header,
99 sizeof(struct qb_ipc_response_header), -1);
100 if (res == -EINTR) {
101 return -1;
102 }
103 if (res < 0) {
104 qb_perror(LOG_ERR, "qb_ipcc_event_recv");
105 }
106 assert(res == sizeof(struct qb_ipc_response_header));
107 assert(res_header.id == 13);
108 assert(res_header.size == sizeof(struct qb_ipc_response_header));
109 }
110 return 0;
111 }
112
113 struct qb_ipc_request_header *global_zcb_buffer;
114
115 static void show_usage(const char *name)
116 {
117 qb_log(LOG_INFO, "usage: \n");
118 qb_log(LOG_INFO, "%s <options>\n", name);
119 qb_log(LOG_INFO, "\n");
120 qb_log(LOG_INFO, " options:\n");
121 qb_log(LOG_INFO, "\n");
122 qb_log(LOG_INFO, " -n non-blocking ipc (default blocking)\n");
123 qb_log(LOG_INFO, " -e receive events\n");
124 qb_log(LOG_INFO, " -v verbose\n");
125 qb_log(LOG_INFO, " -h show this help text\n");
126 qb_log(LOG_INFO, "\n");
127 }
128
129 static void sigterm_handler(int32_t num)
130 {
131 qb_log(LOG_INFO, "bmc: %s(%d)\n", __func__, num);
132 qb_ipcc_disconnect(conn);
133 exit(0);
134 }
135
136 int32_t
137 main(int32_t argc, char *argv[])
138 {
139 const char *options = "nevh";
140 int32_t opt;
141 int32_t i, j;
142 size_t size;
143
144 mypid = getpid();
145
146 qb_log_init("bmc", LOG_USER, LOG_EMERG);
147 qb_log_ctl(QB_LOG_SYSLOG, QB_LOG_CONF_ENABLED, QB_FALSE);
148 qb_log_filter_ctl(QB_LOG_STDERR, QB_LOG_FILTER_ADD,
149 QB_LOG_FILTER_FILE, "*", LOG_INFO);
150 qb_log_ctl(QB_LOG_STDERR, QB_LOG_CONF_ENABLED, QB_TRUE);
151
152 while ((opt = getopt(argc, argv, options)) != -1) {
153 switch (opt) {
154 case 'n':
155 blocking = QB_FALSE;
156 break;
157 case 'e':
158 events = QB_TRUE;
159 break;
160 case 'v':
161 verbose++;
162 break;
163 case 'h':
164 default:
165 show_usage(argv[0]);
166 exit(0);
167 break;
168 }
169 }
170
171 signal(SIGINT, sigterm_handler);
172 signal(SIGILL, sigterm_handler);
173 signal(SIGTERM, sigterm_handler);
174 conn = qb_ipcc_connect("bm1", MAX_MSG_SIZE);
175 if (conn == NULL) {
176 qb_perror(LOG_ERR, "qb_ipcc_connect");
177 exit(1);
178 }
179
180 sw = qb_util_stopwatch_create();
181 size = QB_MAX(sizeof(struct qb_ipc_request_header), 64);
182 for (j = 0; j < 20; j++) {
183 if (size >= MAX_MSG_SIZE)
184 break;
185 qb_util_stopwatch_start(sw);
186 for (i = 0; i < ITERATIONS; i++) {
187 if (bmc_send_nozc(size) == -1) {
188 break;
189 }
190 }
191 bm_finish("send_nozc", size);
192 size *= 2;
193 }
194
195 qb_ipcc_disconnect(conn);
196 return EXIT_SUCCESS;
197 }
198
199