Fri, 07 Jan 2011 10:42:32 -0500
7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
Summary: Track allocated bytes in Thread's, update on TLAB retirement and direct allocation in Eden and tenured, add JNI methods for ThreadMXBean.
Reviewed-by: coleenp, kvn, dholmes, ysr
duke@435 | 1 | /* |
stefank@2314 | 2 | * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
stefank@2314 | 25 | #include "precompiled.hpp" |
stefank@2314 | 26 | #include "classfile/javaClasses.hpp" |
stefank@2314 | 27 | #include "classfile/systemDictionary.hpp" |
stefank@2314 | 28 | #include "classfile/vmSymbols.hpp" |
stefank@2314 | 29 | #include "memory/oopFactory.hpp" |
stefank@2314 | 30 | #include "memory/resourceArea.hpp" |
stefank@2314 | 31 | #include "memory/universe.inline.hpp" |
stefank@2314 | 32 | #include "oops/instanceKlass.hpp" |
stefank@2314 | 33 | #include "oops/methodOop.hpp" |
stefank@2314 | 34 | #include "oops/oop.inline.hpp" |
stefank@2314 | 35 | #include "oops/symbolOop.hpp" |
stefank@2314 | 36 | #include "prims/jvm_misc.hpp" |
stefank@2314 | 37 | #include "prims/nativeLookup.hpp" |
stefank@2314 | 38 | #include "runtime/arguments.hpp" |
stefank@2314 | 39 | #include "runtime/handles.inline.hpp" |
stefank@2314 | 40 | #include "runtime/javaCalls.hpp" |
stefank@2314 | 41 | #include "runtime/sharedRuntime.hpp" |
stefank@2314 | 42 | #include "runtime/signature.hpp" |
stefank@2314 | 43 | #ifdef TARGET_OS_FAMILY_linux |
stefank@2314 | 44 | # include "os_linux.inline.hpp" |
stefank@2314 | 45 | #endif |
stefank@2314 | 46 | #ifdef TARGET_OS_FAMILY_solaris |
stefank@2314 | 47 | # include "os_solaris.inline.hpp" |
stefank@2314 | 48 | #endif |
stefank@2314 | 49 | #ifdef TARGET_OS_FAMILY_windows |
stefank@2314 | 50 | # include "os_windows.inline.hpp" |
stefank@2314 | 51 | #endif |
duke@435 | 52 | |
duke@435 | 53 | |
duke@435 | 54 | static void mangle_name_on(outputStream* st, symbolOop name, int begin, int end) { |
duke@435 | 55 | char* bytes = (char*)name->bytes() + begin; |
duke@435 | 56 | char* end_bytes = (char*)name->bytes() + end; |
duke@435 | 57 | while (bytes < end_bytes) { |
duke@435 | 58 | jchar c; |
duke@435 | 59 | bytes = UTF8::next(bytes, &c); |
duke@435 | 60 | if (c <= 0x7f && isalnum(c)) { |
duke@435 | 61 | st->put((char) c); |
duke@435 | 62 | } else { |
duke@435 | 63 | if (c == '_') st->print("_1"); |
duke@435 | 64 | else if (c == '/') st->print("_"); |
duke@435 | 65 | else if (c == ';') st->print("_2"); |
duke@435 | 66 | else if (c == '[') st->print("_3"); |
duke@435 | 67 | else st->print("_%.5x", c); |
duke@435 | 68 | } |
duke@435 | 69 | } |
duke@435 | 70 | } |
duke@435 | 71 | |
duke@435 | 72 | |
duke@435 | 73 | static void mangle_name_on(outputStream* st, symbolOop name) { |
duke@435 | 74 | mangle_name_on(st, name, 0, name->utf8_length()); |
duke@435 | 75 | } |
duke@435 | 76 | |
duke@435 | 77 | |
duke@435 | 78 | char* NativeLookup::pure_jni_name(methodHandle method) { |
duke@435 | 79 | stringStream st; |
duke@435 | 80 | // Prefix |
duke@435 | 81 | st.print("Java_"); |
duke@435 | 82 | // Klass name |
duke@435 | 83 | mangle_name_on(&st, method->klass_name()); |
duke@435 | 84 | st.print("_"); |
duke@435 | 85 | // Method name |
duke@435 | 86 | mangle_name_on(&st, method->name()); |
duke@435 | 87 | return st.as_string(); |
duke@435 | 88 | } |
duke@435 | 89 | |
duke@435 | 90 | |
duke@435 | 91 | char* NativeLookup::long_jni_name(methodHandle method) { |
duke@435 | 92 | // Signature ignore the wrapping parenteses and the trailing return type |
duke@435 | 93 | stringStream st; |
duke@435 | 94 | symbolOop signature = method->signature(); |
duke@435 | 95 | st.print("__"); |
duke@435 | 96 | // find ')' |
duke@435 | 97 | int end; |
duke@435 | 98 | for (end = 0; end < signature->utf8_length() && signature->byte_at(end) != ')'; end++); |
duke@435 | 99 | // skip first '(' |
duke@435 | 100 | mangle_name_on(&st, signature, 1, end); |
duke@435 | 101 | return st.as_string(); |
duke@435 | 102 | } |
duke@435 | 103 | |
duke@435 | 104 | extern "C" { |
duke@435 | 105 | void JNICALL JVM_RegisterUnsafeMethods(JNIEnv *env, jclass unsafecls); |
jrose@1145 | 106 | void JNICALL JVM_RegisterMethodHandleMethods(JNIEnv *env, jclass unsafecls); |
duke@435 | 107 | void JNICALL JVM_RegisterPerfMethods(JNIEnv *env, jclass perfclass); |
duke@435 | 108 | } |
duke@435 | 109 | |
duke@435 | 110 | static address lookup_special_native(char* jni_name) { |
duke@435 | 111 | // NB: To ignore the jni prefix and jni postfix strstr is used matching. |
duke@435 | 112 | if (!JDK_Version::is_gte_jdk14x_version()) { |
duke@435 | 113 | // These functions only exist for compatibility with 1.3.1 and earlier |
duke@435 | 114 | // Intercept ObjectOutputStream getPrimitiveFieldValues for faster serialization |
duke@435 | 115 | if (strstr(jni_name, "Java_java_io_ObjectOutputStream_getPrimitiveFieldValues") != NULL) { |
duke@435 | 116 | return CAST_FROM_FN_PTR(address, JVM_GetPrimitiveFieldValues); |
duke@435 | 117 | } |
duke@435 | 118 | // Intercept ObjectInputStream setPrimitiveFieldValues for faster serialization |
duke@435 | 119 | if (strstr(jni_name, "Java_java_io_ObjectInputStream_setPrimitiveFieldValues") != NULL) { |
duke@435 | 120 | return CAST_FROM_FN_PTR(address, JVM_SetPrimitiveFieldValues); |
duke@435 | 121 | } |
duke@435 | 122 | } |
duke@435 | 123 | if (strstr(jni_name, "Java_sun_misc_Unsafe_registerNatives") != NULL) { |
duke@435 | 124 | return CAST_FROM_FN_PTR(address, JVM_RegisterUnsafeMethods); |
duke@435 | 125 | } |
jrose@1145 | 126 | if (strstr(jni_name, "Java_sun_dyn_MethodHandleNatives_registerNatives") != NULL) { |
jrose@1145 | 127 | return CAST_FROM_FN_PTR(address, JVM_RegisterMethodHandleMethods); |
jrose@1145 | 128 | } |
duke@435 | 129 | if (strstr(jni_name, "Java_sun_misc_Perf_registerNatives") != NULL) { |
duke@435 | 130 | return CAST_FROM_FN_PTR(address, JVM_RegisterPerfMethods); |
duke@435 | 131 | } |
duke@435 | 132 | |
duke@435 | 133 | return NULL; |
duke@435 | 134 | } |
duke@435 | 135 | |
duke@435 | 136 | address NativeLookup::lookup_style(methodHandle method, char* pure_name, const char* long_name, int args_size, bool os_style, bool& in_base_library, TRAPS) { |
duke@435 | 137 | address entry; |
duke@435 | 138 | // Compute complete JNI name for style |
duke@435 | 139 | stringStream st; |
duke@435 | 140 | if (os_style) os::print_jni_name_prefix_on(&st, args_size); |
duke@435 | 141 | st.print_raw(pure_name); |
duke@435 | 142 | st.print_raw(long_name); |
duke@435 | 143 | if (os_style) os::print_jni_name_suffix_on(&st, args_size); |
duke@435 | 144 | char* jni_name = st.as_string(); |
duke@435 | 145 | |
duke@435 | 146 | // If the loader is null we have a system class, so we attempt a lookup in |
duke@435 | 147 | // the native Java library. This takes care of any bootstrapping problems. |
duke@435 | 148 | // Note: It is critical for bootstrapping that Java_java_lang_ClassLoader_00024NativeLibrary_find |
duke@435 | 149 | // gets found the first time around - otherwise an infinite loop can occure. This is |
duke@435 | 150 | // another VM/library dependency |
duke@435 | 151 | Handle loader(THREAD, |
duke@435 | 152 | instanceKlass::cast(method->method_holder())->class_loader()); |
duke@435 | 153 | if (loader.is_null()) { |
duke@435 | 154 | entry = lookup_special_native(jni_name); |
duke@435 | 155 | if (entry == NULL) { |
ikrylov@2322 | 156 | entry = (address) os::dll_lookup(os::native_java_library(), jni_name); |
duke@435 | 157 | } |
duke@435 | 158 | if (entry != NULL) { |
duke@435 | 159 | in_base_library = true; |
duke@435 | 160 | return entry; |
duke@435 | 161 | } |
duke@435 | 162 | } |
duke@435 | 163 | |
duke@435 | 164 | // Otherwise call static method findNative in ClassLoader |
never@1577 | 165 | KlassHandle klass (THREAD, SystemDictionary::ClassLoader_klass()); |
duke@435 | 166 | Handle name_arg = java_lang_String::create_from_str(jni_name, CHECK_NULL); |
duke@435 | 167 | |
duke@435 | 168 | JavaValue result(T_LONG); |
duke@435 | 169 | JavaCalls::call_static(&result, |
duke@435 | 170 | klass, |
duke@435 | 171 | vmSymbolHandles::findNative_name(), |
duke@435 | 172 | vmSymbolHandles::classloader_string_long_signature(), |
duke@435 | 173 | // Arguments |
duke@435 | 174 | loader, |
duke@435 | 175 | name_arg, |
duke@435 | 176 | CHECK_NULL); |
duke@435 | 177 | entry = (address) (intptr_t) result.get_jlong(); |
duke@435 | 178 | |
duke@435 | 179 | if (entry == NULL) { |
duke@435 | 180 | // findNative didn't find it, if there are any agent libraries look in them |
duke@435 | 181 | AgentLibrary* agent; |
duke@435 | 182 | for (agent = Arguments::agents(); agent != NULL; agent = agent->next()) { |
ikrylov@2322 | 183 | entry = (address) os::dll_lookup(agent->os_lib(), jni_name); |
duke@435 | 184 | if (entry != NULL) { |
duke@435 | 185 | return entry; |
duke@435 | 186 | } |
duke@435 | 187 | } |
duke@435 | 188 | } |
duke@435 | 189 | |
duke@435 | 190 | return entry; |
duke@435 | 191 | } |
duke@435 | 192 | |
duke@435 | 193 | |
duke@435 | 194 | // Check all the formats of native implementation name to see if there is one |
duke@435 | 195 | // for the specified method. |
duke@435 | 196 | address NativeLookup::lookup_entry(methodHandle method, bool& in_base_library, TRAPS) { |
duke@435 | 197 | address entry = NULL; |
duke@435 | 198 | in_base_library = false; |
duke@435 | 199 | // Compute pure name |
duke@435 | 200 | char* pure_name = pure_jni_name(method); |
duke@435 | 201 | |
duke@435 | 202 | // Compute argument size |
duke@435 | 203 | int args_size = 1 // JNIEnv |
duke@435 | 204 | + (method->is_static() ? 1 : 0) // class for static methods |
duke@435 | 205 | + method->size_of_parameters(); // actual parameters |
duke@435 | 206 | |
duke@435 | 207 | |
duke@435 | 208 | // 1) Try JNI short style |
duke@435 | 209 | entry = lookup_style(method, pure_name, "", args_size, true, in_base_library, CHECK_NULL); |
duke@435 | 210 | if (entry != NULL) return entry; |
duke@435 | 211 | |
duke@435 | 212 | // Compute long name |
duke@435 | 213 | char* long_name = long_jni_name(method); |
duke@435 | 214 | |
duke@435 | 215 | // 2) Try JNI long style |
duke@435 | 216 | entry = lookup_style(method, pure_name, long_name, args_size, true, in_base_library, CHECK_NULL); |
duke@435 | 217 | if (entry != NULL) return entry; |
duke@435 | 218 | |
duke@435 | 219 | // 3) Try JNI short style without os prefix/suffix |
duke@435 | 220 | entry = lookup_style(method, pure_name, "", args_size, false, in_base_library, CHECK_NULL); |
duke@435 | 221 | if (entry != NULL) return entry; |
duke@435 | 222 | |
duke@435 | 223 | // 4) Try JNI long style without os prefix/suffix |
duke@435 | 224 | entry = lookup_style(method, pure_name, long_name, args_size, false, in_base_library, CHECK_NULL); |
duke@435 | 225 | |
duke@435 | 226 | return entry; // NULL indicates not found |
duke@435 | 227 | } |
duke@435 | 228 | |
duke@435 | 229 | // Check if there are any JVM TI prefixes which have been applied to the native method name. |
duke@435 | 230 | // If any are found, remove them before attemping the look up of the |
duke@435 | 231 | // native implementation again. |
duke@435 | 232 | // See SetNativeMethodPrefix in the JVM TI Spec for more details. |
duke@435 | 233 | address NativeLookup::lookup_entry_prefixed(methodHandle method, bool& in_base_library, TRAPS) { |
duke@435 | 234 | ResourceMark rm(THREAD); |
duke@435 | 235 | |
duke@435 | 236 | int prefix_count; |
duke@435 | 237 | char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count); |
duke@435 | 238 | char* in_name = method->name()->as_C_string(); |
duke@435 | 239 | char* wrapper_name = in_name; |
duke@435 | 240 | // last applied prefix will be first -- go backwards |
duke@435 | 241 | for (int i = prefix_count-1; i >= 0; i--) { |
duke@435 | 242 | char* prefix = prefixes[i]; |
duke@435 | 243 | size_t prefix_len = strlen(prefix); |
duke@435 | 244 | if (strncmp(prefix, wrapper_name, prefix_len) == 0) { |
duke@435 | 245 | // has this prefix remove it |
duke@435 | 246 | wrapper_name += prefix_len; |
duke@435 | 247 | } |
duke@435 | 248 | } |
duke@435 | 249 | if (wrapper_name != in_name) { |
duke@435 | 250 | // we have a name for a wrapping method |
duke@435 | 251 | int wrapper_name_len = (int)strlen(wrapper_name); |
duke@435 | 252 | symbolHandle wrapper_symbol(THREAD, SymbolTable::probe(wrapper_name, wrapper_name_len)); |
duke@435 | 253 | if (!wrapper_symbol.is_null()) { |
duke@435 | 254 | KlassHandle kh(method->method_holder()); |
duke@435 | 255 | methodOop wrapper_method = Klass::cast(kh())->lookup_method(wrapper_symbol(), |
duke@435 | 256 | method->signature()); |
duke@435 | 257 | if (wrapper_method != NULL && !wrapper_method->is_native()) { |
duke@435 | 258 | // we found a wrapper method, use its native entry |
duke@435 | 259 | method->set_is_prefixed_native(); |
duke@435 | 260 | return lookup_entry(wrapper_method, in_base_library, THREAD); |
duke@435 | 261 | } |
duke@435 | 262 | } |
duke@435 | 263 | } |
duke@435 | 264 | return NULL; |
duke@435 | 265 | } |
duke@435 | 266 | |
duke@435 | 267 | address NativeLookup::lookup_base(methodHandle method, bool& in_base_library, TRAPS) { |
duke@435 | 268 | address entry = NULL; |
duke@435 | 269 | ResourceMark rm(THREAD); |
duke@435 | 270 | |
duke@435 | 271 | entry = lookup_entry(method, in_base_library, THREAD); |
duke@435 | 272 | if (entry != NULL) return entry; |
duke@435 | 273 | |
duke@435 | 274 | // standard native method resolution has failed. Check if there are any |
duke@435 | 275 | // JVM TI prefixes which have been applied to the native method name. |
duke@435 | 276 | entry = lookup_entry_prefixed(method, in_base_library, THREAD); |
duke@435 | 277 | if (entry != NULL) return entry; |
duke@435 | 278 | |
duke@435 | 279 | // Native function not found, throw UnsatisfiedLinkError |
duke@435 | 280 | THROW_MSG_0(vmSymbols::java_lang_UnsatisfiedLinkError(), |
duke@435 | 281 | method->name_and_sig_as_C_string()); |
duke@435 | 282 | } |
duke@435 | 283 | |
duke@435 | 284 | |
duke@435 | 285 | address NativeLookup::lookup(methodHandle method, bool& in_base_library, TRAPS) { |
duke@435 | 286 | if (!method->has_native_function()) { |
duke@435 | 287 | address entry = lookup_base(method, in_base_library, CHECK_NULL); |
duke@435 | 288 | method->set_native_function(entry, |
duke@435 | 289 | methodOopDesc::native_bind_event_is_interesting); |
duke@435 | 290 | // -verbose:jni printing |
duke@435 | 291 | if (PrintJNIResolving) { |
duke@435 | 292 | ResourceMark rm(THREAD); |
duke@435 | 293 | tty->print_cr("[Dynamic-linking native method %s.%s ... JNI]", |
duke@435 | 294 | Klass::cast(method->method_holder())->external_name(), |
duke@435 | 295 | method->name()->as_C_string()); |
duke@435 | 296 | } |
duke@435 | 297 | } |
duke@435 | 298 | return method->native_function(); |
duke@435 | 299 | } |
duke@435 | 300 | |
duke@435 | 301 | address NativeLookup::base_library_lookup(const char* class_name, const char* method_name, const char* signature) { |
duke@435 | 302 | EXCEPTION_MARK; |
duke@435 | 303 | bool in_base_library = true; // SharedRuntime inits some math methods. |
duke@435 | 304 | symbolHandle c_name = oopFactory::new_symbol_handle(class_name, CATCH); |
duke@435 | 305 | symbolHandle m_name = oopFactory::new_symbol_handle(method_name, CATCH); |
duke@435 | 306 | symbolHandle s_name = oopFactory::new_symbol_handle(signature, CATCH); |
duke@435 | 307 | |
duke@435 | 308 | // Find the class |
duke@435 | 309 | klassOop k = SystemDictionary::resolve_or_fail(c_name, true, CATCH); |
duke@435 | 310 | instanceKlassHandle klass (THREAD, k); |
duke@435 | 311 | |
duke@435 | 312 | // Find method and invoke standard lookup |
duke@435 | 313 | methodHandle method (THREAD, |
duke@435 | 314 | klass->uncached_lookup_method(m_name(), s_name())); |
duke@435 | 315 | address result = lookup(method, in_base_library, CATCH); |
duke@435 | 316 | assert(in_base_library, "must be in basic library"); |
duke@435 | 317 | guarantee(result != NULL, "must be non NULL"); |
duke@435 | 318 | return result; |
duke@435 | 319 | } |