Mercurial > hg > graal-compiler
annotate src/share/vm/prims/perf.cpp @ 10217:bf089b838c9e
8012641: Perf_CreateLong creates perf counter of incorrect type
Reviewed-by: mchung, hseigel, coleenp
| author | ccheung |
|---|---|
| date | Thu, 02 May 2013 16:55:00 -0700 |
| parents | f95d63e2154a |
| children | de6a9e811145 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 2001, 2010, 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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8012641: Perf_CreateLong creates perf counter of incorrect type
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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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8012641: Perf_CreateLong creates perf counter of incorrect type
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157 case PerfData::V_Variable: |
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8012641: Perf_CreateLong creates perf counter of incorrect type
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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 |