Mercurial > hg > graal-jvmci-8
annotate src/share/vm/prims/whitebox.cpp @ 10354:dcb062bea05b
8013461: There is a symbol AsyncGetCallTrace in libjvm.symbols that does not exist in minimal/libjvm.a when DEBUG_LEVEL == release
Summary: AsyncGetCallTrace is needed in libjvm.symbols so that programs which reference it can build correctly.
Reviewed-by: dholmes, bobv
author | jprovino |
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date | Tue, 28 May 2013 11:17:16 -0400 |
parents | d17700c82d7d |
children | f54c85acc043 |
rev | line source |
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5915 | 1 /* |
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2 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved. |
5915 | 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 #include "classfile/classLoaderData.hpp" |
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32 |
5915 | 33 #include "prims/whitebox.hpp" |
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34 #include "prims/wbtestmethods/parserTests.hpp" |
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35 |
5915 | 36 #include "runtime/interfaceSupport.hpp" |
37 #include "runtime/os.hpp" | |
38 #include "utilities/debug.hpp" | |
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39 #include "utilities/macros.hpp" |
5915 | 40 |
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41 #if INCLUDE_ALL_GCS |
5915 | 42 #include "gc_implementation/g1/concurrentMark.hpp" |
43 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" | |
44 #include "gc_implementation/g1/heapRegionRemSet.hpp" | |
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45 #endif // INCLUDE_ALL_GCS |
5915 | 46 |
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47 #ifdef INCLUDE_NMT |
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48 #include "services/memTracker.hpp" |
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49 #endif // INCLUDE_NMT |
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50 |
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51 #include "compiler/compileBroker.hpp" |
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52 #include "runtime/compilationPolicy.hpp" |
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53 |
5915 | 54 bool WhiteBox::_used = false; |
55 | |
56 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) | |
57 return (jlong)(void*)JNIHandles::resolve(obj); | |
58 WB_END | |
59 | |
60 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) | |
61 return heapOopSize; | |
62 WB_END | |
63 | |
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64 |
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65 class WBIsKlassAliveClosure : public KlassClosure { |
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66 Symbol* _name; |
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67 bool _found; |
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68 public: |
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69 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {} |
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70 |
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71 void do_klass(Klass* k) { |
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72 if (_found) return; |
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73 Symbol* ksym = k->name(); |
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74 if (ksym->fast_compare(_name) == 0) { |
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75 _found = true; |
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76 } |
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77 } |
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78 |
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79 bool found() const { |
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80 return _found; |
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81 } |
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82 }; |
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83 |
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84 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name)) |
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85 Handle h_name = JNIHandles::resolve(name); |
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86 if (h_name.is_null()) return false; |
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87 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false); |
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88 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return |
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89 |
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90 WBIsKlassAliveClosure closure(sym); |
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91 ClassLoaderDataGraph::classes_do(&closure); |
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92 |
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93 return closure.found(); |
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94 WB_END |
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95 |
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96 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { |
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97 CollectorPolicy * p = Universe::heap()->collector_policy(); |
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98 gclog_or_tty->print_cr("Minimum heap "SIZE_FORMAT" Initial heap " |
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99 SIZE_FORMAT" Maximum heap "SIZE_FORMAT" Min alignment "SIZE_FORMAT" Max alignment "SIZE_FORMAT, |
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100 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(), |
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101 p->min_alignment(), p->max_alignment()); |
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102 } |
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103 WB_END |
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104 |
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105 #if INCLUDE_ALL_GCS |
5915 | 106 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) |
107 G1CollectedHeap* g1 = G1CollectedHeap::heap(); | |
108 oop result = JNIHandles::resolve(obj); | |
109 const HeapRegion* hr = g1->heap_region_containing(result); | |
110 return hr->isHumongous(); | |
111 WB_END | |
112 | |
113 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) | |
114 G1CollectedHeap* g1 = G1CollectedHeap::heap(); | |
115 size_t nr = g1->free_regions(); | |
116 return (jlong)nr; | |
117 WB_END | |
118 | |
119 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) | |
120 G1CollectedHeap* g1 = G1CollectedHeap::heap(); | |
121 ConcurrentMark* cm = g1->concurrent_mark(); | |
122 return cm->concurrent_marking_in_progress(); | |
123 WB_END | |
124 | |
125 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) | |
126 return (jint)HeapRegion::GrainBytes; | |
127 WB_END | |
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128 #endif // INCLUDE_ALL_GCS |
5915 | 129 |
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130 #ifdef INCLUDE_NMT |
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131 // Alloc memory using the test memory type so that we can use that to see if |
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132 // NMT picks it up correctly |
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133 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) |
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134 jlong addr = 0; |
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135 |
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136 if (MemTracker::is_on() && !MemTracker::shutdown_in_progress()) { |
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137 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); |
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138 } |
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139 |
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140 return addr; |
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141 WB_END |
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142 |
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143 // Free the memory allocated by NMTAllocTest |
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144 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) |
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145 os::free((void*)(uintptr_t)mem, mtTest); |
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146 WB_END |
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147 |
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148 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) |
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149 jlong addr = 0; |
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150 |
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151 if (MemTracker::is_on() && !MemTracker::shutdown_in_progress()) { |
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152 addr = (jlong)(uintptr_t)os::reserve_memory(size); |
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153 MemTracker::record_virtual_memory_type((address)addr, mtTest); |
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154 } |
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155 |
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156 return addr; |
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157 WB_END |
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158 |
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159 |
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160 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) |
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161 os::commit_memory((char *)(uintptr_t)addr, size); |
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162 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); |
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163 WB_END |
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164 |
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165 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) |
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166 os::uncommit_memory((char *)(uintptr_t)addr, size); |
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167 WB_END |
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168 |
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169 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) |
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170 os::release_memory((char *)(uintptr_t)addr, size); |
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171 WB_END |
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172 |
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173 // Block until the current generation of NMT data to be merged, used to reliably test the NMT feature |
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174 WB_ENTRY(jboolean, WB_NMTWaitForDataMerge(JNIEnv* env)) |
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175 |
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176 if (!MemTracker::is_on() || MemTracker::shutdown_in_progress()) { |
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177 return false; |
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178 } |
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179 |
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180 return MemTracker::wbtest_wait_for_data_merge(); |
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181 WB_END |
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182 |
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183 #endif // INCLUDE_NMT |
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184 |
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185 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { |
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186 assert(method != NULL, "method should not be null"); |
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187 ThreadToNativeFromVM ttn(thread); |
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188 return env->FromReflectedMethod(method); |
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189 } |
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190 |
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191 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) |
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192 MutexLockerEx mu(Compile_lock); |
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193 CodeCache::mark_all_nmethods_for_deoptimization(); |
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194 VM_Deoptimize op; |
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195 VMThread::execute(&op); |
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196 WB_END |
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197 |
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198 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method)) |
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199 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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200 MutexLockerEx mu(Compile_lock); |
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201 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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202 int result = 0; |
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203 nmethod* code = mh->code(); |
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204 if (code != NULL) { |
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205 code->mark_for_deoptimization(); |
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206 ++result; |
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207 } |
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208 result += CodeCache::mark_for_deoptimization(mh()); |
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209 if (result > 0) { |
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210 VM_Deoptimize op; |
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211 VMThread::execute(&op); |
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212 } |
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213 return result; |
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214 WB_END |
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215 |
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216 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method)) |
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217 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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218 MutexLockerEx mu(Compile_lock); |
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219 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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220 nmethod* code = mh->code(); |
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221 if (code == NULL) { |
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222 return JNI_FALSE; |
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223 } |
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224 return (code->is_alive() && !code->is_marked_for_deoptimization()); |
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225 WB_END |
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226 |
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227 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level)) |
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228 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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229 MutexLockerEx mu(Compile_lock); |
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230 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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231 return CompilationPolicy::can_be_compiled(mh, comp_level); |
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232 WB_END |
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233 |
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234 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) |
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235 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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236 MutexLockerEx mu(Compile_lock); |
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237 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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238 return mh->queued_for_compilation(); |
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239 WB_END |
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240 |
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241 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method)) |
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242 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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243 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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244 nmethod* code = mh->code(); |
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245 return (code != NULL ? code->comp_level() : CompLevel_none); |
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246 WB_END |
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247 |
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248 |
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249 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level)) |
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250 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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251 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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252 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox"); |
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253 WB_END |
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254 |
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255 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) |
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256 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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257 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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258 bool result = mh->dont_inline(); |
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259 mh->set_dont_inline(value == JNI_TRUE); |
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260 return result; |
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261 WB_END |
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262 |
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263 WB_ENTRY(jint, WB_GetCompileQueuesSize(JNIEnv* env, jobject o)) |
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264 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + |
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265 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; |
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266 WB_END |
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267 |
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268 |
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269 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) |
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270 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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271 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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272 bool result = mh->force_inline(); |
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273 mh->set_force_inline(value == JNI_TRUE); |
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274 return result; |
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275 WB_END |
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276 |
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277 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level)) |
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278 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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279 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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280 nmethod* nm = CompileBroker::compile_method(mh, InvocationEntryBci, comp_level, mh, mh->invocation_count(), "WhiteBox", THREAD); |
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281 MutexLockerEx mu(Compile_lock); |
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282 return (mh->queued_for_compilation() || nm != NULL); |
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283 WB_END |
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284 |
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285 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) |
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286 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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287 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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288 MutexLockerEx mu(Compile_lock); |
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289 MethodData* mdo = mh->method_data(); |
10107 | 290 MethodCounters* mcs = mh->method_counters(); |
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291 |
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292 if (mdo != NULL) { |
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293 mdo->init(); |
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294 ResourceMark rm; |
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295 int arg_count = mdo->method()->size_of_parameters(); |
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296 for (int i = 0; i < arg_count; i++) { |
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297 mdo->set_arg_modified(i, 0); |
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298 } |
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299 } |
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300 |
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301 mh->clear_not_c1_compilable(); |
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302 mh->clear_not_c2_compilable(); |
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303 mh->clear_not_c2_osr_compilable(); |
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304 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); |
10107 | 305 if (mcs != NULL) { |
306 mcs->backedge_counter()->init(); | |
307 mcs->invocation_counter()->init(); | |
308 mcs->set_interpreter_invocation_count(0); | |
309 mcs->set_interpreter_throwout_count(0); | |
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310 |
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311 #ifdef TIERED |
10107 | 312 mcs->set_rate(0.0F); |
313 mh->set_prev_event_count(0, THREAD); | |
314 mh->set_prev_time(0, THREAD); | |
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315 #endif |
10107 | 316 } |
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317 WB_END |
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318 |
8850 | 319 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) |
320 ResourceMark rm(THREAD); | |
321 int len; | |
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322 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); |
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323 return (StringTable::lookup(name, len) != NULL); |
8850 | 324 WB_END |
325 | |
326 | |
327 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) | |
328 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true); | |
329 Universe::heap()->collect(GCCause::_last_ditch_collection); | |
330 WB_END | |
331 | |
10157 | 332 |
333 WB_ENTRY(jlong, WB_ReserveMemory(JNIEnv* env, jobject o, jlong size)) | |
334 return (jlong)os::reserve_memory(size, NULL, 0); | |
335 WB_END | |
336 | |
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337 //Some convenience methods to deal with objects from java |
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338 int WhiteBox::offset_for_field(const char* field_name, oop object, |
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339 Symbol* signature_symbol) { |
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340 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); |
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341 Thread* THREAD = Thread::current(); |
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342 |
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343 //Get the class of our object |
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344 Klass* arg_klass = object->klass(); |
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345 //Turn it into an instance-klass |
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346 InstanceKlass* ik = InstanceKlass::cast(arg_klass); |
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347 |
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348 //Create symbols to look for in the class |
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349 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name), |
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350 THREAD); |
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351 |
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352 //To be filled in with an offset of the field we're looking for |
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353 fieldDescriptor fd; |
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354 |
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355 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); |
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356 if (res == NULL) { |
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357 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), |
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358 name_symbol->as_C_string()); |
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359 fatal("Invalid layout of preloaded class"); |
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360 } |
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361 |
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362 //fetch the field at the offset we've found |
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363 int dest_offset = fd.offset(); |
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364 |
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365 return dest_offset; |
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366 } |
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367 |
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368 |
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369 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { |
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370 int offset = offset_for_field(field_name, object, |
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371 vmSymbols::string_signature()); |
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372 oop string = object->obj_field(offset); |
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373 if (string == NULL) { |
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374 return NULL; |
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375 } |
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376 const char* ret = java_lang_String::as_utf8_string(string); |
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377 return ret; |
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378 } |
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379 |
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380 bool WhiteBox::lookup_bool(const char* field_name, oop object) { |
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381 int offset = |
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382 offset_for_field(field_name, object, vmSymbols::bool_signature()); |
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383 bool ret = (object->bool_field(offset) == JNI_TRUE); |
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384 return ret; |
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385 } |
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386 |
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387 |
5915 | 388 #define CC (char*) |
389 | |
390 static JNINativeMethod methods[] = { | |
391 {CC"getObjectAddress", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, | |
392 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, | |
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393 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive }, |
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394 {CC"parseCommandLine", |
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395 CC"(Ljava/lang/String;[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", |
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396 (void*) &WB_ParseCommandLine |
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397 }, |
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398 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, |
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399 #if INCLUDE_ALL_GCS |
5915 | 400 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, |
401 {CC"g1IsHumongous", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, | |
402 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, | |
403 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, | |
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404 #endif // INCLUDE_ALL_GCS |
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405 #ifdef INCLUDE_NMT |
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406 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, |
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407 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, |
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408 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, |
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409 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, |
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410 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, |
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411 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, |
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412 {CC"NMTWaitForDataMerge", CC"()Z", (void*)&WB_NMTWaitForDataMerge}, |
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413 #endif // INCLUDE_NMT |
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414 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, |
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415 {CC"deoptimizeMethod", CC"(Ljava/lang/reflect/Executable;)I", |
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416 (void*)&WB_DeoptimizeMethod }, |
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417 {CC"isMethodCompiled", CC"(Ljava/lang/reflect/Executable;)Z", |
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418 (void*)&WB_IsMethodCompiled }, |
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419 {CC"isMethodCompilable", CC"(Ljava/lang/reflect/Executable;I)Z", |
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420 (void*)&WB_IsMethodCompilable}, |
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421 {CC"isMethodQueuedForCompilation", |
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422 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, |
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423 {CC"makeMethodNotCompilable", |
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424 CC"(Ljava/lang/reflect/Executable;I)V", (void*)&WB_MakeMethodNotCompilable}, |
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425 {CC"testSetDontInlineMethod", |
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426 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, |
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427 {CC"getMethodCompilationLevel", |
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428 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodCompilationLevel}, |
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429 {CC"getCompileQueuesSize", |
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430 CC"()I", (void*)&WB_GetCompileQueuesSize}, |
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431 {CC"testSetForceInlineMethod", |
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432 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, |
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433 {CC"enqueueMethodForCompilation", |
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434 CC"(Ljava/lang/reflect/Executable;I)Z", (void*)&WB_EnqueueMethodForCompilation}, |
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435 {CC"clearMethodState", |
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436 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, |
8850 | 437 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, |
438 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, | |
10157 | 439 |
440 {CC"reserveMemory", CC"(J)J", (void*)&WB_ReserveMemory }, | |
5915 | 441 }; |
442 | |
443 #undef CC | |
444 | |
445 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) | |
446 { | |
447 if (WhiteBoxAPI) { | |
448 // Make sure that wbclass is loaded by the null classloader | |
449 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass()); | |
450 Handle loader(ikh->class_loader()); | |
451 if (loader.is_null()) { | |
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452 ResourceMark rm; |
5915 | 453 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI |
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454 bool result = true; |
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455 // one by one registration natives for exception catching |
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456 jclass exceptionKlass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); |
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457 for (int i = 0, n = sizeof(methods) / sizeof(methods[0]); i < n; ++i) { |
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458 if (env->RegisterNatives(wbclass, methods + i, 1) != 0) { |
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459 result = false; |
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460 if (env->ExceptionCheck() && env->IsInstanceOf(env->ExceptionOccurred(), exceptionKlass)) { |
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461 // j.l.NoSuchMethodError is thrown when a method can't be found or a method is not native |
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462 // ignoring the exception |
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463 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", methods[i].name, methods[i].signature); |
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464 env->ExceptionClear(); |
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465 } else { |
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466 // register is failed w/o exception or w/ unexpected exception |
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467 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered", methods[i].name, methods[i].signature); |
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468 env->UnregisterNatives(wbclass); |
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469 break; |
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470 } |
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471 } |
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472 } |
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473 |
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474 if (result) { |
5915 | 475 WhiteBox::set_used(); |
476 } | |
477 } | |
478 } | |
479 } | |
480 JVM_END |