Mercurial > hg > truffle
annotate src/share/vm/prims/perf.cpp @ 14702:d4dd5204c0aa
Merge
author | ehelin |
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date | Fri, 14 Mar 2014 13:27:18 +0100 |
parents | de6a9e811145 |
children | 4ca6dc0799b6 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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. | |
8 * | |
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). | |
14 * | |
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 "classfile/vmSymbols.hpp" | |
27 #include "memory/allocation.inline.hpp" | |
28 #include "memory/resourceArea.hpp" | |
29 #include "oops/oop.inline.hpp" | |
30 #include "prims/jni.h" | |
31 #include "prims/jvm.h" | |
32 #include "runtime/interfaceSupport.hpp" | |
33 #include "runtime/perfData.hpp" | |
34 #include "runtime/perfMemory.hpp" | |
35 | |
0 | 36 /* |
37 * Implementation of class sun.misc.Perf | |
38 */ | |
39 | |
40 | |
41 #define PERF_ENTRY(result_type, header) \ | |
42 JVM_ENTRY(result_type, header) | |
43 | |
44 #define PERF_END JVM_END | |
45 | |
46 #define PerfWrapper(arg) /* Unimplemented at this time */ | |
47 | |
48 static char* jstr_to_utf(JNIEnv *env, jstring str, TRAPS) { | |
49 | |
50 char* utfstr = NULL; | |
51 | |
52 if (str == NULL) { | |
53 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
54 //throw_new(env,"NullPointerException"); | |
55 } | |
56 | |
57 int len = env->GetStringUTFLength(str); | |
58 int unicode_len = env->GetStringLength(str); | |
59 | |
60 utfstr = NEW_RESOURCE_ARRAY(char, len + 1); | |
61 | |
62 env->GetStringUTFRegion(str, 0, unicode_len, utfstr); | |
63 | |
64 return utfstr; | |
65 } | |
66 | |
67 PERF_ENTRY(jobject, Perf_Attach(JNIEnv *env, jobject unused, jstring user, int vmid, int mode)) | |
68 | |
69 PerfWrapper("Perf_Attach"); | |
70 | |
71 char* address = 0; | |
72 size_t capacity = 0; | |
73 const char* user_utf = NULL; | |
74 | |
75 ResourceMark rm; | |
76 | |
77 { | |
78 ThreadToNativeFromVM ttnfv(thread); | |
79 | |
80 user_utf = user == NULL ? NULL : jstr_to_utf(env, user, CHECK_NULL); | |
81 } | |
82 | |
83 if (mode != PerfMemory::PERF_MODE_RO && | |
84 mode != PerfMemory::PERF_MODE_RW) { | |
85 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
86 } | |
87 | |
88 // attach to the PerfData memory region for the specified VM | |
89 PerfMemory::attach(user_utf, vmid, (PerfMemory::PerfMemoryMode) mode, | |
90 &address, &capacity, CHECK_NULL); | |
91 | |
92 { | |
93 ThreadToNativeFromVM ttnfv(thread); | |
94 return env->NewDirectByteBuffer(address, (jlong)capacity); | |
95 } | |
96 | |
97 PERF_END | |
98 | |
99 PERF_ENTRY(void, Perf_Detach(JNIEnv *env, jobject unused, jobject buffer)) | |
100 | |
101 PerfWrapper("Perf_Detach"); | |
102 | |
103 void* address = 0; | |
104 jlong capacity = 0; | |
105 | |
106 // get buffer address and capacity | |
107 { | |
108 ThreadToNativeFromVM ttnfv(thread); | |
109 address = env->GetDirectBufferAddress(buffer); | |
110 capacity = env->GetDirectBufferCapacity(buffer); | |
111 } | |
112 | |
113 PerfMemory::detach((char*)address, capacity, CHECK); | |
114 | |
115 PERF_END | |
116 | |
117 PERF_ENTRY(jobject, Perf_CreateLong(JNIEnv *env, jobject perf, jstring name, | |
118 int variability, int units, jlong value)) | |
119 | |
120 PerfWrapper("Perf_CreateLong"); | |
121 | |
122 char* name_utf = NULL; | |
123 | |
124 if (units <= 0 || units > PerfData::U_Last) { | |
125 debug_only(warning("unexpected units argument, units = %d", units)); | |
126 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
127 } | |
128 | |
129 ResourceMark rm; | |
130 | |
131 { | |
132 ThreadToNativeFromVM ttnfv(thread); | |
133 | |
134 name_utf = jstr_to_utf(env, name, CHECK_NULL); | |
135 } | |
136 | |
137 PerfLong* pl = NULL; | |
138 | |
139 // check that the PerfData name doesn't already exist | |
140 if (PerfDataManager::exists(name_utf)) { | |
141 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "PerfLong name already exists"); | |
142 } | |
143 | |
144 switch(variability) { | |
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145 case PerfData::V_Constant: |
0 | 146 pl = PerfDataManager::create_long_constant(NULL_NS, (char *)name_utf, |
147 (PerfData::Units)units, value, | |
148 CHECK_NULL); | |
149 break; | |
150 | |
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151 case PerfData::V_Monotonic: |
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152 pl = PerfDataManager::create_long_counter(NULL_NS, (char *)name_utf, |
0 | 153 (PerfData::Units)units, value, |
154 CHECK_NULL); | |
155 break; | |
156 | |
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157 case PerfData::V_Variable: |
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158 pl = PerfDataManager::create_long_variable(NULL_NS, (char *)name_utf, |
0 | 159 (PerfData::Units)units, value, |
160 CHECK_NULL); | |
161 break; | |
162 | |
163 default: /* Illegal Argument */ | |
164 debug_only(warning("unexpected variability value: %d", variability)); | |
165 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
166 break; | |
167 } | |
168 | |
169 long* lp = (long*)pl->get_address(); | |
170 | |
171 { | |
172 ThreadToNativeFromVM ttnfv(thread); | |
173 return env->NewDirectByteBuffer(lp, sizeof(jlong)); | |
174 } | |
175 | |
176 PERF_END | |
177 | |
178 PERF_ENTRY(jobject, Perf_CreateByteArray(JNIEnv *env, jobject perf, | |
179 jstring name, jint variability, | |
180 jint units, jbyteArray value, | |
181 jint maxlength)) | |
182 | |
183 PerfWrapper("Perf_CreateByteArray"); | |
184 | |
185 // check for valid byte array objects | |
186 if (name == NULL || value == NULL) { | |
187 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
188 } | |
189 | |
190 // check for valid variability classification | |
191 if (variability != PerfData::V_Constant && | |
192 variability != PerfData::V_Variable) { | |
193 debug_only(warning("unexpected variability value: %d", variability)); | |
194 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
195 } | |
196 | |
197 // check for valid units | |
198 if (units != PerfData::U_String) { | |
199 // only String based ByteArray objects are currently supported | |
200 debug_only(warning("unexpected units value: %d", variability)); | |
201 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
202 } | |
203 | |
204 int value_length; | |
205 char* name_utf = NULL; | |
206 jbyte* value_local = NULL; | |
207 | |
208 ResourceMark rm; | |
209 | |
210 { | |
211 ThreadToNativeFromVM ttnfv(thread); | |
212 | |
213 name_utf = jstr_to_utf(env, name, CHECK_NULL); | |
214 | |
215 value_length = env->GetArrayLength(value); | |
216 | |
217 value_local = NEW_RESOURCE_ARRAY(jbyte, value_length + 1); | |
218 | |
219 env->GetByteArrayRegion(value, 0, value_length, value_local); | |
220 } | |
221 | |
222 // check that the counter name doesn't already exist | |
223 if (PerfDataManager::exists((char*)name_utf)) { | |
224 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "PerfByteArray name already exists"); | |
225 } | |
226 | |
227 PerfByteArray* pbv = NULL; | |
228 | |
229 if (units == PerfData::U_String) { | |
230 | |
231 if (variability == PerfData::V_Constant) { | |
232 // create the string constant | |
233 pbv = PerfDataManager::create_string_constant(NULL_NS, (char*)name_utf, | |
234 (char*)value_local, | |
235 CHECK_NULL); | |
236 | |
237 assert(maxlength == value_length, "string constant length should be == maxlength"); | |
238 maxlength = value_length; | |
239 } | |
240 else { | |
241 | |
242 // create the string variable | |
243 pbv = PerfDataManager::create_string_variable(NULL_NS, (char*)name_utf, | |
244 maxlength, | |
245 (char*)value_local, | |
246 CHECK_NULL); | |
247 | |
248 assert(maxlength >= value_length,"string variable length should be <= maxlength"); | |
249 } | |
250 } | |
251 | |
252 char* cp = (char*)pbv->get_address(); | |
253 | |
254 { | |
255 ThreadToNativeFromVM ttnfv(thread); | |
256 return env->NewDirectByteBuffer(cp, maxlength+1); | |
257 } | |
258 | |
259 PERF_END | |
260 | |
261 PERF_ENTRY(jlong, Perf_HighResCounter(JNIEnv *env, jobject perf)) | |
262 | |
263 PerfWrapper("Perf_HighResCounter"); | |
264 | |
265 // this should be a method in java.lang.System. This value could | |
266 // be acquired through access to a PerfData performance counter, but | |
267 // doing so would require that the PerfData monitoring overhead be | |
268 // incurred by all Java applications, which is unacceptable. | |
269 | |
270 return os::elapsed_counter(); | |
271 | |
272 PERF_END | |
273 | |
274 PERF_ENTRY(jlong, Perf_HighResFrequency(JNIEnv *env, jobject perf)) | |
275 | |
276 PerfWrapper("Perf_HighResFrequency"); | |
277 | |
278 // this should be a method in java.lang.System. This value could | |
279 // be acquired through access to a PerfData performance counter, but | |
280 // doing so would require that the PerfData monitoring overhead be | |
281 // incurred by all Java applications, which is unacceptable. | |
282 | |
283 return os::elapsed_frequency(); | |
284 | |
285 PERF_END | |
286 | |
287 /// JVM_RegisterPerfMethods | |
288 | |
289 #define CC (char*) /*cast a literal from (const char*)*/ | |
290 #define FN_PTR(f) CAST_FROM_FN_PTR(void*, &f) | |
291 #define BB "Ljava/nio/ByteBuffer;" | |
292 #define JLS "Ljava/lang/String;" | |
293 #define CL_ARGS CC"("JLS"IIJ)"BB | |
294 #define CBA_ARGS CC"("JLS"II[BI)"BB | |
295 | |
296 static JNINativeMethod perfmethods[] = { | |
297 | |
298 {CC"attach", CC"("JLS"II)"BB, FN_PTR(Perf_Attach)}, | |
299 {CC"detach", CC"("BB")V", FN_PTR(Perf_Detach)}, | |
300 {CC"createLong", CL_ARGS, FN_PTR(Perf_CreateLong)}, | |
301 {CC"createByteArray", CBA_ARGS, FN_PTR(Perf_CreateByteArray)}, | |
302 {CC"highResCounter", CC"()J", FN_PTR(Perf_HighResCounter)}, | |
303 {CC"highResFrequency", CC"()J", FN_PTR(Perf_HighResFrequency)} | |
304 }; | |
305 | |
306 #undef CBA_ARGS | |
307 #undef CL_ARGS | |
308 #undef JLS | |
309 #undef BB | |
310 #undef FN_PTR | |
311 #undef CC | |
312 | |
313 // This one function is exported, used by NativeLookup. | |
314 JVM_ENTRY(void, JVM_RegisterPerfMethods(JNIEnv *env, jclass perfclass)) | |
315 PerfWrapper("JVM_RegisterPerfMethods"); | |
316 { | |
317 ThreadToNativeFromVM ttnfv(thread); | |
318 int ok = env->RegisterNatives(perfclass, perfmethods, sizeof(perfmethods)/sizeof(JNINativeMethod)); | |
319 guarantee(ok == 0, "register perf natives"); | |
320 } | |
321 JVM_END |