Mercurial > hg > truffle
annotate src/share/vm/prims/whitebox.cpp @ 6202:5a1f452f8f90
7178703: Fix handling of quoted arguments and better error messages in dcmd
Reviewed-by: coleenp, mgronlun, rbackman
| author | sla |
|---|---|
| date | Thu, 28 Jun 2012 11:37:28 +0200 |
| parents | 51612f0c0a79 |
| children | da91efe96a93 |
| rev | line source |
|---|---|
| 5915 | 1 /* |
| 2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. | |
| 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 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #include "precompiled.hpp" | |
| 26 | |
| 27 #include "memory/universe.hpp" | |
| 28 #include "oops/oop.inline.hpp" | |
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29 |
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30 #include "classfile/symbolTable.hpp" |
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31 |
| 5915 | 32 #include "prims/whitebox.hpp" |
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33 #include "prims/wbtestmethods/parserTests.hpp" |
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34 |
| 5915 | 35 #include "runtime/interfaceSupport.hpp" |
| 36 #include "runtime/os.hpp" | |
| 37 #include "utilities/debug.hpp" | |
| 38 | |
| 39 #ifndef SERIALGC | |
| 40 #include "gc_implementation/g1/concurrentMark.hpp" | |
| 41 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" | |
| 42 #include "gc_implementation/g1/heapRegionRemSet.hpp" | |
| 43 #endif // !SERIALGC | |
| 44 | |
| 45 bool WhiteBox::_used = false; | |
| 46 | |
| 47 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) | |
| 48 return (jlong)(void*)JNIHandles::resolve(obj); | |
| 49 WB_END | |
| 50 | |
| 51 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) | |
| 52 return heapOopSize; | |
| 53 WB_END | |
| 54 | |
| 55 #ifndef SERIALGC | |
| 56 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) | |
| 57 G1CollectedHeap* g1 = G1CollectedHeap::heap(); | |
| 58 oop result = JNIHandles::resolve(obj); | |
| 59 const HeapRegion* hr = g1->heap_region_containing(result); | |
| 60 return hr->isHumongous(); | |
| 61 WB_END | |
| 62 | |
| 63 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) | |
| 64 G1CollectedHeap* g1 = G1CollectedHeap::heap(); | |
| 65 size_t nr = g1->free_regions(); | |
| 66 return (jlong)nr; | |
| 67 WB_END | |
| 68 | |
| 69 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) | |
| 70 G1CollectedHeap* g1 = G1CollectedHeap::heap(); | |
| 71 ConcurrentMark* cm = g1->concurrent_mark(); | |
| 72 return cm->concurrent_marking_in_progress(); | |
| 73 WB_END | |
| 74 | |
| 75 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) | |
| 76 return (jint)HeapRegion::GrainBytes; | |
| 77 WB_END | |
| 78 #endif // !SERIALGC | |
| 79 | |
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80 //Some convenience methods to deal with objects from java |
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81 int WhiteBox::offset_for_field(const char* field_name, oop object, |
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82 Symbol* signature_symbol) { |
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83 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); |
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84 Thread* THREAD = Thread::current(); |
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85 |
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86 //Get the class of our object |
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87 klassOop arg_klass = object->klass(); |
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88 //Turn it into an instance-klass |
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89 instanceKlass* ik = instanceKlass::cast(arg_klass); |
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90 |
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91 //Create symbols to look for in the class |
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92 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name), |
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93 THREAD); |
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94 |
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95 //To be filled in with an offset of the field we're looking for |
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96 fieldDescriptor fd; |
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97 |
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98 klassOop res = ik->find_field(name_symbol, signature_symbol, &fd); |
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99 if (res == NULL) { |
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100 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), |
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101 name_symbol->as_C_string()); |
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102 fatal("Invalid layout of preloaded class"); |
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103 } |
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104 |
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105 //fetch the field at the offset we've found |
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106 int dest_offset = fd.offset(); |
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107 |
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108 return dest_offset; |
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109 } |
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110 |
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111 |
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112 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { |
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113 int offset = offset_for_field(field_name, object, |
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114 vmSymbols::string_signature()); |
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115 oop string = object->obj_field(offset); |
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116 if (string == NULL) { |
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117 return NULL; |
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118 } |
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119 const char* ret = java_lang_String::as_utf8_string(string); |
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120 return ret; |
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121 } |
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122 |
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123 bool WhiteBox::lookup_bool(const char* field_name, oop object) { |
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124 int offset = |
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125 offset_for_field(field_name, object, vmSymbols::bool_signature()); |
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126 bool ret = (object->bool_field(offset) == JNI_TRUE); |
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127 return ret; |
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128 } |
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129 |
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130 |
| 5915 | 131 #define CC (char*) |
| 132 | |
| 133 static JNINativeMethod methods[] = { | |
| 134 {CC"getObjectAddress", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, | |
| 135 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, | |
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136 {CC "parseCommandLine", |
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137 CC "(Ljava/lang/String;[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", |
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138 (void*) &WB_ParseCommandLine |
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139 }, |
| 5915 | 140 #ifndef SERIALGC |
| 141 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, | |
| 142 {CC"g1IsHumongous", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, | |
| 143 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, | |
| 144 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, | |
| 145 #endif // !SERIALGC | |
| 146 }; | |
| 147 | |
| 148 #undef CC | |
| 149 | |
| 150 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) | |
| 151 { | |
| 152 if (WhiteBoxAPI) { | |
| 153 // Make sure that wbclass is loaded by the null classloader | |
| 154 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass()); | |
| 155 Handle loader(ikh->class_loader()); | |
| 156 if (loader.is_null()) { | |
| 157 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI | |
| 158 jint result = env->RegisterNatives(wbclass, methods, sizeof(methods)/sizeof(methods[0])); | |
| 159 if (result == 0) { | |
| 160 WhiteBox::set_used(); | |
| 161 } | |
| 162 } | |
| 163 } | |
| 164 } | |
| 165 JVM_END |