Use CRITICAL job priority class for long running dispatcher jobs
[strongswan.git] / src / libcharon / plugins / load_tester / load_tester_plugin.c
1 /*
2 * Copyright (C) 2008 Martin Willi
3 * Hochschule fuer Technik Rapperswil
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
12 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * for more details.
14 */
15
16 #include "load_tester_plugin.h"
17 #include "load_tester_config.h"
18 #include "load_tester_creds.h"
19 #include "load_tester_ipsec.h"
20 #include "load_tester_listener.h"
21 #include "load_tester_diffie_hellman.h"
22
23 #include <unistd.h>
24
25 #include <hydra.h>
26 #include <daemon.h>
27 #include <processing/jobs/callback_job.h>
28 #include <threading/condvar.h>
29 #include <threading/mutex.h>
30
31 static const char *plugin_name = "load_tester";
32
33 typedef struct private_load_tester_plugin_t private_load_tester_plugin_t;
34
35 /**
36 * private data of load_tester plugin
37 */
38 struct private_load_tester_plugin_t {
39
40 /**
41 * implements plugin interface
42 */
43 load_tester_plugin_t public;
44
45 /**
46 * load_tester configuration backend
47 */
48 load_tester_config_t *config;
49
50 /**
51 * load_tester credential set implementation
52 */
53 load_tester_creds_t *creds;
54
55 /**
56 * event handler, listens on bus
57 */
58 load_tester_listener_t *listener;
59
60 /**
61 * number of iterations per thread
62 */
63 int iterations;
64
65 /**
66 * number desired initiator threads
67 */
68 int initiators;
69
70 /**
71 * currenly running initiators
72 */
73 int running;
74
75 /**
76 * delay between initiations, in ms
77 */
78 int delay;
79
80 /**
81 * mutex to lock running field
82 */
83 mutex_t *mutex;
84
85 /**
86 * condvar to wait for initiators
87 */
88 condvar_t *condvar;
89 };
90
91 /**
92 * Begin the load test
93 */
94 static job_requeue_t do_load_test(private_load_tester_plugin_t *this)
95 {
96 int i, s = 0, ms = 0;
97
98 this->mutex->lock(this->mutex);
99 if (!this->running)
100 {
101 this->running = this->initiators;
102 }
103 this->mutex->unlock(this->mutex);
104 if (this->delay)
105 {
106 s = this->delay / 1000;
107 ms = this->delay % 1000;
108 }
109
110 for (i = 0; this->iterations == 0 || i < this->iterations; i++)
111 {
112 peer_cfg_t *peer_cfg;
113 child_cfg_t *child_cfg = NULL;
114 enumerator_t *enumerator;
115
116 peer_cfg = charon->backends->get_peer_cfg_by_name(charon->backends,
117 "load-test");
118 if (!peer_cfg)
119 {
120 break;
121 }
122 enumerator = peer_cfg->create_child_cfg_enumerator(peer_cfg);
123 if (!enumerator->enumerate(enumerator, &child_cfg))
124 {
125 enumerator->destroy(enumerator);
126 break;
127 }
128 enumerator->destroy(enumerator);
129
130 charon->controller->initiate(charon->controller,
131 peer_cfg, child_cfg->get_ref(child_cfg),
132 NULL, NULL);
133 if (s)
134 {
135 sleep(s);
136 }
137 if (ms)
138 {
139 usleep(ms * 1000);
140 }
141 }
142 this->mutex->lock(this->mutex);
143 this->running--;
144 this->mutex->unlock(this->mutex);
145 this->condvar->signal(this->condvar);
146 return JOB_REQUEUE_NONE;
147 }
148
149 METHOD(plugin_t, get_name, char*,
150 private_load_tester_plugin_t *this)
151 {
152 return "load-tester";
153 }
154
155 METHOD(plugin_t, destroy, void,
156 private_load_tester_plugin_t *this)
157 {
158 this->iterations = -1;
159 this->mutex->lock(this->mutex);
160 while (this->running)
161 {
162 this->condvar->wait(this->condvar, this->mutex);
163 }
164 this->mutex->unlock(this->mutex);
165 hydra->kernel_interface->remove_ipsec_interface(hydra->kernel_interface,
166 (kernel_ipsec_constructor_t)load_tester_ipsec_create);
167 charon->backends->remove_backend(charon->backends, &this->config->backend);
168 lib->credmgr->remove_set(lib->credmgr, &this->creds->credential_set);
169 charon->bus->remove_listener(charon->bus, &this->listener->listener);
170 this->config->destroy(this->config);
171 this->creds->destroy(this->creds);
172 this->listener->destroy(this->listener);
173 lib->crypto->remove_dh(lib->crypto,
174 (dh_constructor_t)load_tester_diffie_hellman_create);
175 this->mutex->destroy(this->mutex);
176 this->condvar->destroy(this->condvar);
177 free(this);
178 }
179
180 /*
181 * see header file
182 */
183 plugin_t *load_tester_plugin_create()
184 {
185 private_load_tester_plugin_t *this;
186 u_int i, shutdown_on = 0;
187
188 if (!lib->settings->get_bool(lib->settings,
189 "charon.plugins.load-tester.enable", FALSE))
190 {
191 DBG1(DBG_CFG, "disabling load-tester plugin, not configured");
192 return NULL;
193 }
194
195 INIT(this,
196 .public = {
197 .plugin = {
198 .get_name = _get_name,
199 .reload = (void*)return_false,
200 .destroy = _destroy,
201 },
202 },
203 .delay = lib->settings->get_int(lib->settings,
204 "charon.plugins.load-tester.delay", 0),
205 .iterations = lib->settings->get_int(lib->settings,
206 "charon.plugins.load-tester.iterations", 1),
207 .initiators = lib->settings->get_int(lib->settings,
208 "charon.plugins.load-tester.initiators", 0),
209 .mutex = mutex_create(MUTEX_TYPE_DEFAULT),
210 .condvar = condvar_create(CONDVAR_TYPE_DEFAULT),
211 .config = load_tester_config_create(),
212 .creds = load_tester_creds_create(),
213 .listener = load_tester_listener_create(shutdown_on),
214 );
215
216 lib->crypto->add_dh(lib->crypto, MODP_NULL, plugin_name,
217 (dh_constructor_t)load_tester_diffie_hellman_create);
218 charon->backends->add_backend(charon->backends, &this->config->backend);
219 lib->credmgr->add_set(lib->credmgr, &this->creds->credential_set);
220 charon->bus->add_listener(charon->bus, &this->listener->listener);
221
222 if (lib->settings->get_bool(lib->settings,
223 "charon.plugins.load-tester.shutdown_when_complete", 0))
224 {
225 shutdown_on = this->iterations * this->initiators;
226 }
227
228
229 if (lib->settings->get_bool(lib->settings,
230 "charon.plugins.load-tester.fake_kernel", FALSE))
231 {
232 hydra->kernel_interface->add_ipsec_interface(hydra->kernel_interface,
233 (kernel_ipsec_constructor_t)load_tester_ipsec_create);
234 }
235 this->running = 0;
236 for (i = 0; i < this->initiators; i++)
237 {
238 lib->processor->queue_job(lib->processor, (job_t*)
239 callback_job_create_with_prio((callback_job_cb_t)do_load_test,
240 this, NULL, NULL, JOB_PRIO_CRITICAL));
241 }
242 return &this->public.plugin;
243 }
244