Mercurial > hg > graal-compiler
annotate src/share/vm/prims/jvmtiExtensions.cpp @ 4970:33df1aeaebbf
Merge with http://hg.openjdk.java.net/hsx/hsx24/hotspot/
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Mon, 27 Feb 2012 13:10:13 +0100 |
parents | f95d63e2154a |
children | d2a62e0f25eb |
rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
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4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
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15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "prims/jvmtiExport.hpp" | |
27 #include "prims/jvmtiExtensions.hpp" | |
0 | 28 |
29 // the list of extension functions | |
30 GrowableArray<jvmtiExtensionFunctionInfo*>* JvmtiExtensions::_ext_functions; | |
31 | |
32 // the list of extension events | |
33 GrowableArray<jvmtiExtensionEventInfo*>* JvmtiExtensions::_ext_events; | |
34 | |
35 | |
36 // extension function | |
37 static jvmtiError JNICALL IsClassUnloadingEnabled(const jvmtiEnv* env, jboolean* enabled, ...) { | |
38 if (enabled == NULL) { | |
39 return JVMTI_ERROR_NULL_POINTER; | |
40 } | |
41 *enabled = (jboolean)ClassUnloading; | |
42 return JVMTI_ERROR_NONE; | |
43 } | |
44 | |
45 // register extension functions and events. In this implementation we | |
46 // have a single extension function (to prove the API) that tests if class | |
47 // unloading is enabled or disabled. We also have a single extension event | |
48 // EXT_EVENT_CLASS_UNLOAD which is used to provide the JVMDI_EVENT_CLASS_UNLOAD | |
49 // event. The function and the event are registered here. | |
50 // | |
51 void JvmtiExtensions::register_extensions() { | |
52 _ext_functions = new (ResourceObj::C_HEAP) GrowableArray<jvmtiExtensionFunctionInfo*>(1,true); | |
53 _ext_events = new (ResourceObj::C_HEAP) GrowableArray<jvmtiExtensionEventInfo*>(1,true); | |
54 | |
55 // register our extension function | |
56 static jvmtiParamInfo func_params[] = { | |
57 { (char*)"IsClassUnloadingEnabled", JVMTI_KIND_OUT, JVMTI_TYPE_JBOOLEAN, JNI_FALSE } | |
58 }; | |
59 static jvmtiExtensionFunctionInfo ext_func = { | |
60 (jvmtiExtensionFunction)IsClassUnloadingEnabled, | |
61 (char*)"com.sun.hotspot.functions.IsClassUnloadingEnabled", | |
62 (char*)"Tell if class unloading is enabled (-noclassgc)", | |
63 sizeof(func_params)/sizeof(func_params[0]), | |
64 func_params, | |
65 0, // no non-universal errors | |
66 NULL | |
67 }; | |
68 _ext_functions->append(&ext_func); | |
69 | |
70 // register our extension event | |
71 | |
72 static jvmtiParamInfo event_params[] = { | |
73 { (char*)"JNI Environment", JVMTI_KIND_IN, JVMTI_TYPE_JNIENV, JNI_FALSE }, | |
74 { (char*)"Thread", JVMTI_KIND_IN, JVMTI_TYPE_JTHREAD, JNI_FALSE }, | |
75 { (char*)"Class", JVMTI_KIND_IN, JVMTI_TYPE_JCLASS, JNI_FALSE } | |
76 }; | |
77 static jvmtiExtensionEventInfo ext_event = { | |
78 EXT_EVENT_CLASS_UNLOAD, | |
79 (char*)"com.sun.hotspot.events.ClassUnload", | |
80 (char*)"CLASS_UNLOAD event", | |
81 sizeof(event_params)/sizeof(event_params[0]), | |
82 event_params | |
83 }; | |
84 _ext_events->append(&ext_event); | |
85 } | |
86 | |
87 | |
88 // return the list of extension functions | |
89 | |
90 jvmtiError JvmtiExtensions::get_functions(JvmtiEnv* env, | |
91 jint* extension_count_ptr, | |
92 jvmtiExtensionFunctionInfo** extensions) | |
93 { | |
94 guarantee(_ext_functions != NULL, "registration not done"); | |
95 | |
96 ResourceTracker rt(env); | |
97 | |
98 jvmtiExtensionFunctionInfo* ext_funcs; | |
99 jvmtiError err = rt.allocate(_ext_functions->length() * | |
100 sizeof(jvmtiExtensionFunctionInfo), | |
101 (unsigned char**)&ext_funcs); | |
102 if (err != JVMTI_ERROR_NONE) { | |
103 return err; | |
104 } | |
105 | |
106 for (int i=0; i<_ext_functions->length(); i++ ) { | |
107 ext_funcs[i].func = _ext_functions->at(i)->func; | |
108 | |
109 char *id = _ext_functions->at(i)->id; | |
110 err = rt.allocate(strlen(id)+1, (unsigned char**)&(ext_funcs[i].id)); | |
111 if (err != JVMTI_ERROR_NONE) { | |
112 return err; | |
113 } | |
114 strcpy(ext_funcs[i].id, id); | |
115 | |
116 char *desc = _ext_functions->at(i)->short_description; | |
117 err = rt.allocate(strlen(desc)+1, | |
118 (unsigned char**)&(ext_funcs[i].short_description)); | |
119 if (err != JVMTI_ERROR_NONE) { | |
120 return err; | |
121 } | |
122 strcpy(ext_funcs[i].short_description, desc); | |
123 | |
124 // params | |
125 | |
126 jint param_count = _ext_functions->at(i)->param_count; | |
127 | |
128 ext_funcs[i].param_count = param_count; | |
129 if (param_count == 0) { | |
130 ext_funcs[i].params = NULL; | |
131 } else { | |
132 err = rt.allocate(param_count*sizeof(jvmtiParamInfo), | |
133 (unsigned char**)&(ext_funcs[i].params)); | |
134 if (err != JVMTI_ERROR_NONE) { | |
135 return err; | |
136 } | |
137 jvmtiParamInfo* src_params = _ext_functions->at(i)->params; | |
138 jvmtiParamInfo* dst_params = ext_funcs[i].params; | |
139 | |
140 for (int j=0; j<param_count; j++) { | |
141 err = rt.allocate(strlen(src_params[j].name)+1, | |
142 (unsigned char**)&(dst_params[j].name)); | |
143 if (err != JVMTI_ERROR_NONE) { | |
144 return err; | |
145 } | |
146 strcpy(dst_params[j].name, src_params[j].name); | |
147 | |
148 dst_params[j].kind = src_params[j].kind; | |
149 dst_params[j].base_type = src_params[j].base_type; | |
150 dst_params[j].null_ok = src_params[j].null_ok; | |
151 } | |
152 } | |
153 | |
154 // errors | |
155 | |
156 jint error_count = _ext_functions->at(i)->error_count; | |
157 ext_funcs[i].error_count = error_count; | |
158 if (error_count == 0) { | |
159 ext_funcs[i].errors = NULL; | |
160 } else { | |
161 err = rt.allocate(error_count*sizeof(jvmtiError), | |
162 (unsigned char**)&(ext_funcs[i].errors)); | |
163 if (err != JVMTI_ERROR_NONE) { | |
164 return err; | |
165 } | |
166 memcpy(ext_funcs[i].errors, _ext_functions->at(i)->errors, | |
167 error_count*sizeof(jvmtiError)); | |
168 } | |
169 } | |
170 | |
171 *extension_count_ptr = _ext_functions->length(); | |
172 *extensions = ext_funcs; | |
173 return JVMTI_ERROR_NONE; | |
174 } | |
175 | |
176 | |
177 // return the list of extension events | |
178 | |
179 jvmtiError JvmtiExtensions::get_events(JvmtiEnv* env, | |
180 jint* extension_count_ptr, | |
181 jvmtiExtensionEventInfo** extensions) | |
182 { | |
183 guarantee(_ext_events != NULL, "registration not done"); | |
184 | |
185 ResourceTracker rt(env); | |
186 | |
187 jvmtiExtensionEventInfo* ext_events; | |
188 jvmtiError err = rt.allocate(_ext_events->length() * sizeof(jvmtiExtensionEventInfo), | |
189 (unsigned char**)&ext_events); | |
190 if (err != JVMTI_ERROR_NONE) { | |
191 return err; | |
192 } | |
193 | |
194 for (int i=0; i<_ext_events->length(); i++ ) { | |
195 ext_events[i].extension_event_index = _ext_events->at(i)->extension_event_index; | |
196 | |
197 char *id = _ext_events->at(i)->id; | |
198 err = rt.allocate(strlen(id)+1, (unsigned char**)&(ext_events[i].id)); | |
199 if (err != JVMTI_ERROR_NONE) { | |
200 return err; | |
201 } | |
202 strcpy(ext_events[i].id, id); | |
203 | |
204 char *desc = _ext_events->at(i)->short_description; | |
205 err = rt.allocate(strlen(desc)+1, | |
206 (unsigned char**)&(ext_events[i].short_description)); | |
207 if (err != JVMTI_ERROR_NONE) { | |
208 return err; | |
209 } | |
210 strcpy(ext_events[i].short_description, desc); | |
211 | |
212 // params | |
213 | |
214 jint param_count = _ext_events->at(i)->param_count; | |
215 | |
216 ext_events[i].param_count = param_count; | |
217 if (param_count == 0) { | |
218 ext_events[i].params = NULL; | |
219 } else { | |
220 err = rt.allocate(param_count*sizeof(jvmtiParamInfo), | |
221 (unsigned char**)&(ext_events[i].params)); | |
222 if (err != JVMTI_ERROR_NONE) { | |
223 return err; | |
224 } | |
225 jvmtiParamInfo* src_params = _ext_events->at(i)->params; | |
226 jvmtiParamInfo* dst_params = ext_events[i].params; | |
227 | |
228 for (int j=0; j<param_count; j++) { | |
229 err = rt.allocate(strlen(src_params[j].name)+1, | |
230 (unsigned char**)&(dst_params[j].name)); | |
231 if (err != JVMTI_ERROR_NONE) { | |
232 return err; | |
233 } | |
234 strcpy(dst_params[j].name, src_params[j].name); | |
235 | |
236 dst_params[j].kind = src_params[j].kind; | |
237 dst_params[j].base_type = src_params[j].base_type; | |
238 dst_params[j].null_ok = src_params[j].null_ok; | |
239 } | |
240 } | |
241 } | |
242 | |
243 *extension_count_ptr = _ext_events->length(); | |
244 *extensions = ext_events; | |
245 return JVMTI_ERROR_NONE; | |
246 } | |
247 | |
248 // set callback for an extension event and enable/disable it. | |
249 | |
250 jvmtiError JvmtiExtensions::set_event_callback(JvmtiEnv* env, | |
251 jint extension_event_index, | |
252 jvmtiExtensionEvent callback) | |
253 { | |
254 guarantee(_ext_events != NULL, "registration not done"); | |
255 | |
256 jvmtiExtensionEventInfo* event = NULL; | |
257 | |
258 // if there are extension events registered then validate that the | |
259 // extension_event_index matches one of the registered events. | |
260 if (_ext_events != NULL) { | |
261 for (int i=0; i<_ext_events->length(); i++ ) { | |
262 if (_ext_events->at(i)->extension_event_index == extension_event_index) { | |
263 event = _ext_events->at(i); | |
264 break; | |
265 } | |
266 } | |
267 } | |
268 | |
269 // invalid event index | |
270 if (event == NULL) { | |
271 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
272 } | |
273 | |
274 JvmtiEventController::set_extension_event_callback(env, extension_event_index, | |
275 callback); | |
276 | |
277 return JVMTI_ERROR_NONE; | |
278 } |