CTF writer: use own `bt_ctf_object` and `bt_ctf_value` internal APIs
[babeltrace.git] / include / babeltrace / plugin / plugin-internal.h
CommitLineData
33b34c43
PP
1#ifndef BABELTRACE_PLUGIN_PLUGIN_INTERNAL_H
2#define BABELTRACE_PLUGIN_PLUGIN_INTERNAL_H
fb2dcc52
JG
3
4/*
fb2dcc52
JG
5 * Copyright 2015 Jérémie Galarneau <jeremie.galarneau@efficios.com>
6 *
7 * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
8 *
9 * Permission is hereby granted, free of charge, to any person obtaining a copy
10 * of this software and associated documentation files (the "Software"), to deal
11 * in the Software without restriction, including without limitation the rights
12 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13 * copies of the Software, and to permit persons to whom the Software is
14 * furnished to do so, subject to the following conditions:
15 *
16 * The above copyright notice and this permission notice shall be included in
17 * all copies or substantial portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
22 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
25 * SOFTWARE.
26 */
27
28#include <babeltrace/babeltrace-internal.h>
d94d92ac 29#include <babeltrace/graph/component-class-internal.h>
3fe0bf43 30#include <babeltrace/plugin/plugin.h>
33b34c43 31#include <babeltrace/plugin/plugin-dev.h>
d94d92ac 32#include <babeltrace/plugin/plugin-so-internal.h>
b8a06801 33#include <babeltrace/object-internal.h>
d94d92ac 34#include <babeltrace/object.h>
c55a9f58 35#include <babeltrace/types.h>
f6ccaed9 36#include <babeltrace/assert-internal.h>
55bb57e0 37#include <glib.h>
fb2dcc52 38
55bb57e0
PP
39enum bt_plugin_type {
40 BT_PLUGIN_TYPE_SO = 0,
41 BT_PLUGIN_TYPE_PYTHON = 1,
fb2dcc52
JG
42};
43
33b34c43
PP
44struct bt_plugin {
45 struct bt_object base;
55bb57e0 46 enum bt_plugin_type type;
cba174d5 47
d94d92ac
PP
48 /* Arrays of `struct bt_component_class *` (owned by this) */
49 GPtrArray *src_comp_classes;
50 GPtrArray *flt_comp_classes;
51 GPtrArray *sink_comp_classes;
6ba0b073 52
55bb57e0
PP
53 /* Info (owned by this) */
54 struct {
55 GString *path;
56 GString *name;
57 GString *author;
58 GString *license;
59 GString *description;
60 struct {
61 unsigned int major;
62 unsigned int minor;
63 unsigned int patch;
64 GString *extra;
65 } version;
d94d92ac
PP
66 bool path_set;
67 bool name_set;
68 bool author_set;
69 bool license_set;
70 bool description_set;
71 bool version_set;
55bb57e0
PP
72 } info;
73
74 /* Value depends on the specific plugin type */
75 void *spec_data;
6fbd4105 76 void (*destroy_spec_data)(struct bt_plugin *);
33b34c43 77};
fb2dcc52 78
a8ff38ef
PP
79struct bt_plugin_set {
80 struct bt_object base;
81
82 /* Array of struct bt_plugin * */
83 GPtrArray *plugins;
84};
85
3fe0bf43
PP
86static inline
87const char *bt_plugin_status_string(enum bt_plugin_status status)
88{
89 switch (status) {
90 case BT_PLUGIN_STATUS_OK:
91 return "BT_PLUGIN_STATUS_OK";
92 case BT_PLUGIN_STATUS_ERROR:
93 return "BT_PLUGIN_STATUS_ERROR";
94 case BT_PLUGIN_STATUS_NOMEM:
95 return "BT_PLUGIN_STATUS_NOMEM";
96 default:
97 return "(unknown)";
98 }
99}
100
101static inline
102const char *bt_plugin_type_string(enum bt_plugin_type type)
103{
104 switch (type) {
105 case BT_PLUGIN_TYPE_SO:
106 return "BT_PLUGIN_TYPE_SO";
107 case BT_PLUGIN_TYPE_PYTHON:
108 return "BT_PLUGIN_TYPE_PYTHON";
109 default:
110 return "(unknown)";
111 }
112}
113
6fbd4105
PP
114static inline
115void bt_plugin_destroy(struct bt_object *obj)
116{
117 struct bt_plugin *plugin;
118
f6ccaed9 119 BT_ASSERT(obj);
6fbd4105 120 plugin = container_of(obj, struct bt_plugin, base);
d94d92ac 121 BT_LIB_LOGD("Destroying plugin object: %!+l", plugin);
6fbd4105
PP
122
123 if (plugin->destroy_spec_data) {
124 plugin->destroy_spec_data(plugin);
125 }
126
d94d92ac
PP
127 if (plugin->src_comp_classes) {
128 BT_LOGD_STR("Putting source component classes.");
129 g_ptr_array_free(plugin->src_comp_classes, TRUE);
db5504f9 130 plugin->src_comp_classes = NULL;
d94d92ac
PP
131 }
132
133 if (plugin->flt_comp_classes) {
134 BT_LOGD_STR("Putting filter component classes.");
135 g_ptr_array_free(plugin->flt_comp_classes, TRUE);
db5504f9 136 plugin->flt_comp_classes = NULL;
d94d92ac
PP
137 }
138
139 if (plugin->sink_comp_classes) {
140 BT_LOGD_STR("Putting sink component classes.");
141 g_ptr_array_free(plugin->sink_comp_classes, TRUE);
db5504f9 142 plugin->sink_comp_classes = NULL;
6fbd4105
PP
143 }
144
145 if (plugin->info.name) {
146 g_string_free(plugin->info.name, TRUE);
db5504f9 147 plugin->info.name = NULL;
6fbd4105
PP
148 }
149
150 if (plugin->info.path) {
151 g_string_free(plugin->info.path, TRUE);
db5504f9 152 plugin->info.path = NULL;
6fbd4105
PP
153 }
154
155 if (plugin->info.description) {
156 g_string_free(plugin->info.description, TRUE);
db5504f9 157 plugin->info.description = NULL;
6fbd4105
PP
158 }
159
160 if (plugin->info.author) {
161 g_string_free(plugin->info.author, TRUE);
db5504f9 162 plugin->info.author = NULL;
6fbd4105
PP
163 }
164
165 if (plugin->info.license) {
166 g_string_free(plugin->info.license, TRUE);
db5504f9 167 plugin->info.license = NULL;
6fbd4105
PP
168 }
169
170 if (plugin->info.version.extra) {
171 g_string_free(plugin->info.version.extra, TRUE);
db5504f9 172 plugin->info.version.extra = NULL;
6fbd4105
PP
173 }
174
175 g_free(plugin);
176}
177
178static inline
179struct bt_plugin *bt_plugin_create_empty(enum bt_plugin_type type)
180{
181 struct bt_plugin *plugin = NULL;
182
3fe0bf43
PP
183 BT_LOGD("Creating empty plugin object: type=%s",
184 bt_plugin_type_string(type));
185
6fbd4105
PP
186 plugin = g_new0(struct bt_plugin, 1);
187 if (!plugin) {
3fe0bf43 188 BT_LOGE_STR("Failed to allocate one plugin.");
6fbd4105
PP
189 goto error;
190 }
191
3fea54f6 192 bt_object_init_shared(&plugin->base, bt_plugin_destroy);
6fbd4105
PP
193 plugin->type = type;
194
d94d92ac
PP
195 /* Create empty arrays of component classes */
196 plugin->src_comp_classes =
197 g_ptr_array_new_with_free_func(
198 (GDestroyNotify) bt_object_put_ref);
199 if (!plugin->src_comp_classes) {
200 BT_LOGE_STR("Failed to allocate a GPtrArray.");
201 goto error;
202 }
203
204 plugin->flt_comp_classes =
205 g_ptr_array_new_with_free_func(
206 (GDestroyNotify) bt_object_put_ref);
207 if (!plugin->flt_comp_classes) {
208 BT_LOGE_STR("Failed to allocate a GPtrArray.");
209 goto error;
210 }
211
212 plugin->sink_comp_classes =
213 g_ptr_array_new_with_free_func(
214 (GDestroyNotify) bt_object_put_ref);
215 if (!plugin->sink_comp_classes) {
3fe0bf43 216 BT_LOGE_STR("Failed to allocate a GPtrArray.");
6fbd4105
PP
217 goto error;
218 }
219
220 /* Create empty info */
221 plugin->info.name = g_string_new(NULL);
222 if (!plugin->info.name) {
3fe0bf43 223 BT_LOGE_STR("Failed to allocate a GString.");
6fbd4105
PP
224 goto error;
225 }
226
227 plugin->info.path = g_string_new(NULL);
228 if (!plugin->info.path) {
3fe0bf43 229 BT_LOGE_STR("Failed to allocate a GString.");
6fbd4105
PP
230 goto error;
231 }
232
233 plugin->info.description = g_string_new(NULL);
234 if (!plugin->info.description) {
3fe0bf43 235 BT_LOGE_STR("Failed to allocate a GString.");
6fbd4105
PP
236 goto error;
237 }
238
239 plugin->info.author = g_string_new(NULL);
240 if (!plugin->info.author) {
3fe0bf43 241 BT_LOGE_STR("Failed to allocate a GString.");
6fbd4105
PP
242 goto error;
243 }
244
245 plugin->info.license = g_string_new(NULL);
246 if (!plugin->info.license) {
3fe0bf43 247 BT_LOGE_STR("Failed to allocate a GString.");
6fbd4105
PP
248 goto error;
249 }
250
251 plugin->info.version.extra = g_string_new(NULL);
252 if (!plugin->info.version.extra) {
3fe0bf43 253 BT_LOGE_STR("Failed to allocate a GString.");
6fbd4105
PP
254 goto error;
255 }
256
d94d92ac 257 BT_LIB_LOGD("Created empty plugin object: %!+l", plugin);
6fbd4105
PP
258 goto end;
259
260error:
65300d60 261 BT_OBJECT_PUT_REF_AND_RESET(plugin);
6fbd4105
PP
262
263end:
264 return plugin;
265}
55bb57e0
PP
266
267static inline
268void bt_plugin_set_path(struct bt_plugin *plugin, const char *path)
269{
f6ccaed9
PP
270 BT_ASSERT(plugin);
271 BT_ASSERT(path);
55bb57e0 272 g_string_assign(plugin->info.path, path);
c55a9f58 273 plugin->info.path_set = BT_TRUE;
d94d92ac
PP
274 BT_LIB_LOGV("Set plugin's path: %![plugin-]+l, path=\"%s\"",
275 plugin, path);
55bb57e0
PP
276}
277
278static inline
279void bt_plugin_set_name(struct bt_plugin *plugin, const char *name)
280{
f6ccaed9
PP
281 BT_ASSERT(plugin);
282 BT_ASSERT(name);
55bb57e0 283 g_string_assign(plugin->info.name, name);
c55a9f58 284 plugin->info.name_set = BT_TRUE;
d94d92ac 285 BT_LIB_LOGV("Set plugin's name: %![plugin-]+l, name=\"%s\"",
3fe0bf43 286 plugin, name);
55bb57e0
PP
287}
288
289static inline
290void bt_plugin_set_description(struct bt_plugin *plugin,
291 const char *description)
292{
f6ccaed9
PP
293 BT_ASSERT(plugin);
294 BT_ASSERT(description);
55bb57e0 295 g_string_assign(plugin->info.description, description);
c55a9f58 296 plugin->info.description_set = BT_TRUE;
d94d92ac 297 BT_LIB_LOGV("Set plugin's description: %![plugin-]+l", plugin);
55bb57e0
PP
298}
299
300static inline
301void bt_plugin_set_author(struct bt_plugin *plugin, const char *author)
302{
f6ccaed9
PP
303 BT_ASSERT(plugin);
304 BT_ASSERT(author);
55bb57e0 305 g_string_assign(plugin->info.author, author);
c55a9f58 306 plugin->info.author_set = BT_TRUE;
d94d92ac
PP
307 BT_LIB_LOGV("Set plugin's author: %![plugin-]+l, author=\"%s\"",
308 plugin, author);
55bb57e0
PP
309}
310
311static inline
312void bt_plugin_set_license(struct bt_plugin *plugin, const char *license)
313{
f6ccaed9
PP
314 BT_ASSERT(plugin);
315 BT_ASSERT(license);
55bb57e0 316 g_string_assign(plugin->info.license, license);
c55a9f58 317 plugin->info.license_set = BT_TRUE;
d94d92ac
PP
318 BT_LIB_LOGV("Set plugin's path: %![plugin-]+l, license=\"%s\"",
319 plugin, license);
55bb57e0
PP
320}
321
322static inline
323void bt_plugin_set_version(struct bt_plugin *plugin, unsigned int major,
324 unsigned int minor, unsigned int patch, const char *extra)
325{
f6ccaed9 326 BT_ASSERT(plugin);
55bb57e0
PP
327 plugin->info.version.major = major;
328 plugin->info.version.minor = minor;
329 plugin->info.version.patch = patch;
330
331 if (extra) {
332 g_string_assign(plugin->info.version.extra, extra);
333 }
334
c55a9f58 335 plugin->info.version_set = BT_TRUE;
d94d92ac 336 BT_LIB_LOGV("Set plugin's version: %![plugin-]+l, "
3fe0bf43 337 "major=%u, minor=%u, patch=%u, extra=\"%s\"",
d94d92ac 338 plugin, major, minor, patch, extra);
55bb57e0
PP
339}
340
341static inline
d94d92ac
PP
342enum bt_plugin_status bt_plugin_add_component_class(
343 struct bt_plugin *plugin, struct bt_component_class *comp_class)
55bb57e0 344{
d94d92ac
PP
345 GPtrArray *comp_classes;
346
f6ccaed9 347 BT_ASSERT(plugin);
d94d92ac
PP
348 BT_ASSERT(comp_class);
349
350 switch (comp_class->type) {
351 case BT_COMPONENT_CLASS_TYPE_SOURCE:
352 comp_classes = plugin->src_comp_classes;
353 break;
354 case BT_COMPONENT_CLASS_TYPE_FILTER:
355 comp_classes = plugin->flt_comp_classes;
356 break;
357 case BT_COMPONENT_CLASS_TYPE_SINK:
358 comp_classes = plugin->sink_comp_classes;
359 break;
360 default:
361 abort();
362 }
3fe0bf43 363
d94d92ac
PP
364 /* Add new component class */
365 g_ptr_array_add(comp_classes, bt_object_get_ref(comp_class));
366
367 /* Special case for a shared object plugin */
368 if (plugin->type == BT_PLUGIN_TYPE_SO) {
369 bt_plugin_so_on_add_component_class(plugin, comp_class);
3fe0bf43
PP
370 }
371
d94d92ac
PP
372 BT_LIB_LOGD("Added component class to plugin: "
373 "%![plugin-]+l, %![cc-]+C", plugin, comp_class);
374 return BT_PLUGIN_STATUS_OK;
55bb57e0
PP
375}
376
a8ff38ef
PP
377static
378void bt_plugin_set_destroy(struct bt_object *obj)
379{
380 struct bt_plugin_set *plugin_set =
381 container_of(obj, struct bt_plugin_set, base);
382
383 if (!plugin_set) {
384 return;
385 }
386
3fe0bf43
PP
387 BT_LOGD("Destroying plugin set: addr=%p", plugin_set);
388
a8ff38ef 389 if (plugin_set->plugins) {
3fe0bf43 390 BT_LOGD_STR("Putting plugins.");
a8ff38ef
PP
391 g_ptr_array_free(plugin_set->plugins, TRUE);
392 }
393
394 g_free(plugin_set);
395}
396
397static inline
398struct bt_plugin_set *bt_plugin_set_create(void)
399{
400 struct bt_plugin_set *plugin_set = g_new0(struct bt_plugin_set, 1);
401
402 if (!plugin_set) {
403 goto end;
404 }
405
3fe0bf43 406 BT_LOGD_STR("Creating empty plugin set.");
3fea54f6 407 bt_object_init_shared(&plugin_set->base, bt_plugin_set_destroy);
a8ff38ef
PP
408
409 plugin_set->plugins = g_ptr_array_new_with_free_func(
65300d60 410 (GDestroyNotify) bt_object_put_ref);
a8ff38ef 411 if (!plugin_set->plugins) {
3fe0bf43 412 BT_LOGE_STR("Failed to allocate a GPtrArray.");
65300d60 413 BT_OBJECT_PUT_REF_AND_RESET(plugin_set);
a8ff38ef
PP
414 goto end;
415 }
416
3fe0bf43
PP
417 BT_LOGD("Created empty plugin set: addr=%p", plugin_set);
418
a8ff38ef
PP
419end:
420 return plugin_set;
421}
422
423static inline
424void bt_plugin_set_add_plugin(struct bt_plugin_set *plugin_set,
425 struct bt_plugin *plugin)
426{
f6ccaed9
PP
427 BT_ASSERT(plugin_set);
428 BT_ASSERT(plugin);
65300d60 429 g_ptr_array_add(plugin_set->plugins, bt_object_get_ref(plugin));
d94d92ac
PP
430 BT_LIB_LOGV("Added plugin to plugin set: "
431 "plugin-set-addr=%p, %![plugin-]+l",
432 plugin_set, plugin);
8c1a3187
PP
433}
434
33b34c43 435#endif /* BABELTRACE_PLUGIN_PLUGIN_INTERNAL_H */
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