Mercurial > hg > truffle
annotate src/share/vm/prims/whitebox.cpp @ 11722:ff05c78a7f64
use time passed to decide what methods to compile or inline
author | Christian Wirth <christian.wirth@oracle.com> |
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date | Thu, 19 Sep 2013 10:36:56 +0200 |
parents | a837fa3d3f86 |
children | f99558245e5c |
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" |
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40 #include "utilities/exceptions.hpp" |
5915 | 41 |
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42 #if INCLUDE_ALL_GCS |
5915 | 43 #include "gc_implementation/g1/concurrentMark.hpp" |
44 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" | |
45 #include "gc_implementation/g1/heapRegionRemSet.hpp" | |
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46 #endif // INCLUDE_ALL_GCS |
5915 | 47 |
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48 #ifdef INCLUDE_NMT |
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49 #include "services/memTracker.hpp" |
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50 #endif // INCLUDE_NMT |
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51 |
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52 #include "compiler/compileBroker.hpp" |
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53 #include "runtime/compilationPolicy.hpp" |
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54 |
5915 | 55 bool WhiteBox::_used = false; |
56 | |
57 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) | |
58 return (jlong)(void*)JNIHandles::resolve(obj); | |
59 WB_END | |
60 | |
61 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) | |
62 return heapOopSize; | |
63 WB_END | |
64 | |
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65 |
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66 class WBIsKlassAliveClosure : public KlassClosure { |
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67 Symbol* _name; |
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68 bool _found; |
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69 public: |
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70 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {} |
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71 |
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72 void do_klass(Klass* k) { |
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73 if (_found) return; |
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74 Symbol* ksym = k->name(); |
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75 if (ksym->fast_compare(_name) == 0) { |
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76 _found = true; |
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77 } |
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78 } |
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79 |
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80 bool found() const { |
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81 return _found; |
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82 } |
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83 }; |
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84 |
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85 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name)) |
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86 Handle h_name = JNIHandles::resolve(name); |
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87 if (h_name.is_null()) return false; |
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88 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false); |
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89 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return |
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90 |
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91 WBIsKlassAliveClosure closure(sym); |
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92 ClassLoaderDataGraph::classes_do(&closure); |
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93 |
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94 return closure.found(); |
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95 WB_END |
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96 |
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97 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { |
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98 CollectorPolicy * p = Universe::heap()->collector_policy(); |
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99 gclog_or_tty->print_cr("Minimum heap "SIZE_FORMAT" Initial heap " |
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100 SIZE_FORMAT" Maximum heap "SIZE_FORMAT" Min alignment "SIZE_FORMAT" Max alignment "SIZE_FORMAT, |
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101 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(), |
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102 p->min_alignment(), p->max_alignment()); |
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103 } |
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104 WB_END |
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105 |
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106 #if INCLUDE_ALL_GCS |
5915 | 107 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) |
108 G1CollectedHeap* g1 = G1CollectedHeap::heap(); | |
109 oop result = JNIHandles::resolve(obj); | |
110 const HeapRegion* hr = g1->heap_region_containing(result); | |
111 return hr->isHumongous(); | |
112 WB_END | |
113 | |
114 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) | |
115 G1CollectedHeap* g1 = G1CollectedHeap::heap(); | |
116 size_t nr = g1->free_regions(); | |
117 return (jlong)nr; | |
118 WB_END | |
119 | |
120 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) | |
121 G1CollectedHeap* g1 = G1CollectedHeap::heap(); | |
122 ConcurrentMark* cm = g1->concurrent_mark(); | |
123 return cm->concurrent_marking_in_progress(); | |
124 WB_END | |
125 | |
126 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) | |
127 return (jint)HeapRegion::GrainBytes; | |
128 WB_END | |
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129 #endif // INCLUDE_ALL_GCS |
5915 | 130 |
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131 #ifdef INCLUDE_NMT |
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132 // Alloc memory using the test memory type so that we can use that to see if |
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133 // NMT picks it up correctly |
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134 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) |
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135 jlong addr = 0; |
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136 |
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137 if (MemTracker::is_on() && !MemTracker::shutdown_in_progress()) { |
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138 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); |
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139 } |
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140 |
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141 return addr; |
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142 WB_END |
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143 |
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144 // Free the memory allocated by NMTAllocTest |
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145 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) |
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146 os::free((void*)(uintptr_t)mem, mtTest); |
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147 WB_END |
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148 |
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149 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) |
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150 jlong addr = 0; |
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151 |
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152 if (MemTracker::is_on() && !MemTracker::shutdown_in_progress()) { |
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153 addr = (jlong)(uintptr_t)os::reserve_memory(size); |
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154 MemTracker::record_virtual_memory_type((address)addr, mtTest); |
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155 } |
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156 |
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157 return addr; |
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158 WB_END |
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159 |
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160 |
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161 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) |
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162 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); |
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163 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); |
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164 WB_END |
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165 |
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166 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) |
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167 os::uncommit_memory((char *)(uintptr_t)addr, size); |
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168 WB_END |
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169 |
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170 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) |
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171 os::release_memory((char *)(uintptr_t)addr, size); |
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172 WB_END |
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173 |
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174 // Block until the current generation of NMT data to be merged, used to reliably test the NMT feature |
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175 WB_ENTRY(jboolean, WB_NMTWaitForDataMerge(JNIEnv* env)) |
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176 |
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177 if (!MemTracker::is_on() || MemTracker::shutdown_in_progress()) { |
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178 return false; |
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179 } |
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180 |
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181 return MemTracker::wbtest_wait_for_data_merge(); |
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182 WB_END |
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183 |
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184 #endif // INCLUDE_NMT |
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185 |
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186 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { |
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187 assert(method != NULL, "method should not be null"); |
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188 ThreadToNativeFromVM ttn(thread); |
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189 return env->FromReflectedMethod(method); |
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190 } |
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191 |
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192 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) |
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193 MutexLockerEx mu(Compile_lock); |
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194 CodeCache::mark_all_nmethods_for_deoptimization(); |
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195 VM_Deoptimize op; |
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196 VMThread::execute(&op); |
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197 WB_END |
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198 |
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199 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method)) |
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200 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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201 MutexLockerEx mu(Compile_lock); |
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202 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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203 int result = 0; |
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204 nmethod* code = mh->code(); |
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205 if (code != NULL) { |
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206 code->mark_for_deoptimization(); |
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207 ++result; |
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208 } |
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209 result += CodeCache::mark_for_deoptimization(mh()); |
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210 if (result > 0) { |
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211 VM_Deoptimize op; |
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212 VMThread::execute(&op); |
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213 } |
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214 return result; |
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215 WB_END |
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216 |
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217 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method)) |
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218 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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219 MutexLockerEx mu(Compile_lock); |
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220 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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221 nmethod* code = mh->code(); |
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222 if (code == NULL) { |
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223 return JNI_FALSE; |
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224 } |
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225 return (code->is_alive() && !code->is_marked_for_deoptimization()); |
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226 WB_END |
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227 |
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228 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level)) |
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229 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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230 MutexLockerEx mu(Compile_lock); |
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231 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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232 return CompilationPolicy::can_be_compiled(mh, comp_level); |
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233 WB_END |
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234 |
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235 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) |
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236 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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237 MutexLockerEx mu(Compile_lock); |
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238 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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239 return mh->queued_for_compilation(); |
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240 WB_END |
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241 |
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242 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method)) |
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243 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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244 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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245 nmethod* code = mh->code(); |
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246 return (code != NULL ? code->comp_level() : CompLevel_none); |
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247 WB_END |
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248 |
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249 |
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250 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level)) |
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251 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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252 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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253 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox"); |
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254 WB_END |
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255 |
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256 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) |
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257 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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258 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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259 bool result = mh->dont_inline(); |
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260 mh->set_dont_inline(value == JNI_TRUE); |
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261 return result; |
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262 WB_END |
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263 |
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264 WB_ENTRY(jint, WB_GetCompileQueuesSize(JNIEnv* env, jobject o)) |
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265 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + |
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266 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; |
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267 WB_END |
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268 |
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269 |
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270 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) |
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271 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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272 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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273 bool result = mh->force_inline(); |
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274 mh->set_force_inline(value == JNI_TRUE); |
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275 return result; |
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276 WB_END |
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277 |
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278 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level)) |
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279 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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280 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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281 nmethod* nm = CompileBroker::compile_method(mh, InvocationEntryBci, comp_level, mh, mh->invocation_count(), "WhiteBox", THREAD); |
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282 MutexLockerEx mu(Compile_lock); |
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283 return (mh->queued_for_compilation() || nm != NULL); |
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284 WB_END |
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285 |
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286 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) |
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287 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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288 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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289 MutexLockerEx mu(Compile_lock); |
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290 MethodData* mdo = mh->method_data(); |
10107 | 291 MethodCounters* mcs = mh->method_counters(); |
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292 |
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293 if (mdo != NULL) { |
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294 mdo->init(); |
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295 ResourceMark rm; |
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296 int arg_count = mdo->method()->size_of_parameters(); |
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297 for (int i = 0; i < arg_count; i++) { |
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298 mdo->set_arg_modified(i, 0); |
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299 } |
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300 } |
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301 |
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302 mh->clear_not_c1_compilable(); |
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303 mh->clear_not_c2_compilable(); |
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304 mh->clear_not_c2_osr_compilable(); |
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305 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); |
10107 | 306 if (mcs != NULL) { |
307 mcs->backedge_counter()->init(); | |
308 mcs->invocation_counter()->init(); | |
309 mcs->set_interpreter_invocation_count(0); | |
310 mcs->set_interpreter_throwout_count(0); | |
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311 |
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312 #ifdef TIERED |
10107 | 313 mcs->set_rate(0.0F); |
314 mh->set_prev_event_count(0, THREAD); | |
315 mh->set_prev_time(0, THREAD); | |
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316 #endif |
10107 | 317 } |
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318 WB_END |
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319 |
8850 | 320 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) |
321 ResourceMark rm(THREAD); | |
322 int len; | |
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323 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); |
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324 return (StringTable::lookup(name, len) != NULL); |
8850 | 325 WB_END |
326 | |
327 | |
328 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) | |
329 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true); | |
330 Universe::heap()->collect(GCCause::_last_ditch_collection); | |
331 WB_END | |
332 | |
10157 | 333 |
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334 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) |
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335 // static+volatile in order to force the read to happen |
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336 // (not be eliminated by the compiler) |
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337 static char c; |
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338 static volatile char* p; |
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339 |
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340 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0); |
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341 if (p == NULL) { |
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342 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); |
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343 } |
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344 |
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345 c = *p; |
10157 | 346 WB_END |
347 | |
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348 //Some convenience methods to deal with objects from java |
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349 int WhiteBox::offset_for_field(const char* field_name, oop object, |
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350 Symbol* signature_symbol) { |
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351 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); |
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352 Thread* THREAD = Thread::current(); |
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353 |
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354 //Get the class of our object |
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355 Klass* arg_klass = object->klass(); |
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356 //Turn it into an instance-klass |
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357 InstanceKlass* ik = InstanceKlass::cast(arg_klass); |
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358 |
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359 //Create symbols to look for in the class |
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360 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name), |
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361 THREAD); |
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362 |
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363 //To be filled in with an offset of the field we're looking for |
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364 fieldDescriptor fd; |
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365 |
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366 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); |
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367 if (res == NULL) { |
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368 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), |
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369 name_symbol->as_C_string()); |
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370 fatal("Invalid layout of preloaded class"); |
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371 } |
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372 |
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373 //fetch the field at the offset we've found |
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374 int dest_offset = fd.offset(); |
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375 |
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376 return dest_offset; |
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377 } |
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378 |
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379 |
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380 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { |
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381 int offset = offset_for_field(field_name, object, |
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382 vmSymbols::string_signature()); |
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383 oop string = object->obj_field(offset); |
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384 if (string == NULL) { |
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385 return NULL; |
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386 } |
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387 const char* ret = java_lang_String::as_utf8_string(string); |
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388 return ret; |
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389 } |
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390 |
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391 bool WhiteBox::lookup_bool(const char* field_name, oop object) { |
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392 int offset = |
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393 offset_for_field(field_name, object, vmSymbols::bool_signature()); |
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394 bool ret = (object->bool_field(offset) == JNI_TRUE); |
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395 return ret; |
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396 } |
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397 |
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398 |
5915 | 399 #define CC (char*) |
400 | |
401 static JNINativeMethod methods[] = { | |
402 {CC"getObjectAddress", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, | |
403 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, | |
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404 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive }, |
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405 {CC"parseCommandLine", |
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406 CC"(Ljava/lang/String;[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", |
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407 (void*) &WB_ParseCommandLine |
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408 }, |
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409 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, |
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410 #if INCLUDE_ALL_GCS |
5915 | 411 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, |
412 {CC"g1IsHumongous", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, | |
413 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, | |
414 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, | |
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415 #endif // INCLUDE_ALL_GCS |
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416 #ifdef INCLUDE_NMT |
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417 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, |
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418 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, |
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419 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, |
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420 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, |
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421 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, |
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422 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, |
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423 {CC"NMTWaitForDataMerge", CC"()Z", (void*)&WB_NMTWaitForDataMerge}, |
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424 #endif // INCLUDE_NMT |
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425 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, |
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426 {CC"deoptimizeMethod", CC"(Ljava/lang/reflect/Executable;)I", |
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427 (void*)&WB_DeoptimizeMethod }, |
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428 {CC"isMethodCompiled", CC"(Ljava/lang/reflect/Executable;)Z", |
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429 (void*)&WB_IsMethodCompiled }, |
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430 {CC"isMethodCompilable", CC"(Ljava/lang/reflect/Executable;I)Z", |
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431 (void*)&WB_IsMethodCompilable}, |
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432 {CC"isMethodQueuedForCompilation", |
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433 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, |
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434 {CC"makeMethodNotCompilable", |
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435 CC"(Ljava/lang/reflect/Executable;I)V", (void*)&WB_MakeMethodNotCompilable}, |
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436 {CC"testSetDontInlineMethod", |
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437 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, |
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438 {CC"getMethodCompilationLevel", |
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439 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodCompilationLevel}, |
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440 {CC"getCompileQueuesSize", |
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441 CC"()I", (void*)&WB_GetCompileQueuesSize}, |
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442 {CC"testSetForceInlineMethod", |
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443 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, |
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444 {CC"enqueueMethodForCompilation", |
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445 CC"(Ljava/lang/reflect/Executable;I)Z", (void*)&WB_EnqueueMethodForCompilation}, |
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446 {CC"clearMethodState", |
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447 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, |
8850 | 448 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, |
449 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, | |
10157 | 450 |
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451 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, |
5915 | 452 }; |
453 | |
454 #undef CC | |
455 | |
456 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) | |
457 { | |
458 if (WhiteBoxAPI) { | |
459 // Make sure that wbclass is loaded by the null classloader | |
460 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass()); | |
461 Handle loader(ikh->class_loader()); | |
462 if (loader.is_null()) { | |
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463 ResourceMark rm; |
5915 | 464 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI |
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465 bool result = true; |
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466 // one by one registration natives for exception catching |
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467 jclass exceptionKlass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); |
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468 for (int i = 0, n = sizeof(methods) / sizeof(methods[0]); i < n; ++i) { |
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469 if (env->RegisterNatives(wbclass, methods + i, 1) != 0) { |
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470 result = false; |
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471 if (env->ExceptionCheck() && env->IsInstanceOf(env->ExceptionOccurred(), exceptionKlass)) { |
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472 // j.l.NoSuchMethodError is thrown when a method can't be found or a method is not native |
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473 // ignoring the exception |
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474 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", methods[i].name, methods[i].signature); |
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475 env->ExceptionClear(); |
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476 } else { |
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477 // register is failed w/o exception or w/ unexpected exception |
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478 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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479 env->UnregisterNatives(wbclass); |
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480 break; |
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481 } |
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482 } |
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483 } |
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484 |
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485 if (result) { |
5915 | 486 WhiteBox::set_used(); |
487 } | |
488 } | |
489 } | |
490 } | |
491 JVM_END |