Mercurial > hg > truffle
annotate src/share/vm/prims/unsafe.cpp @ 12316:190899198332
7195622: CheckUnhandledOops has limited usefulness now
Summary: Enable CHECK_UNHANDLED_OOPS in fastdebug builds across all supported platforms.
Reviewed-by: coleenp, hseigel, dholmes, stefank, twisti, ihse, rdurbin
Contributed-by: lois.foltan@oracle.com
| author | hseigel |
|---|---|
| date | Thu, 26 Sep 2013 10:25:02 -0400 |
| parents | f2110083203d |
| children | cefad50507d8 4f6bf7dd3f52 c6d7e7406136 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 10405 | 2 * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/vmSymbols.hpp" | |
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27 #include "utilities/macros.hpp" |
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28 #if INCLUDE_ALL_GCS |
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29 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp" |
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30 #endif // INCLUDE_ALL_GCS |
| 1972 | 31 #include "memory/allocation.inline.hpp" |
| 32 #include "prims/jni.h" | |
| 33 #include "prims/jvm.h" | |
| 34 #include "runtime/globals.hpp" | |
| 35 #include "runtime/interfaceSupport.hpp" | |
| 36 #include "runtime/reflection.hpp" | |
| 37 #include "runtime/synchronizer.hpp" | |
| 38 #include "services/threadService.hpp" | |
| 10405 | 39 #include "trace/tracing.hpp" |
| 1972 | 40 #include "utilities/copy.hpp" |
| 41 #include "utilities/dtrace.hpp" | |
| 42 | |
| 0 | 43 /* |
| 44 * Implementation of class sun.misc.Unsafe | |
| 45 */ | |
| 46 | |
| 4006 | 47 #ifndef USDT2 |
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48 HS_DTRACE_PROBE_DECL3(hotspot, thread__park__begin, uintptr_t, int, long long); |
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49 HS_DTRACE_PROBE_DECL1(hotspot, thread__park__end, uintptr_t); |
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50 HS_DTRACE_PROBE_DECL1(hotspot, thread__unpark, uintptr_t); |
| 4006 | 51 #endif /* !USDT2 */ |
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52 |
| 0 | 53 #define MAX_OBJECT_SIZE \ |
| 54 ( arrayOopDesc::header_size(T_DOUBLE) * HeapWordSize \ | |
| 55 + ((julong)max_jint * sizeof(double)) ) | |
| 56 | |
| 57 | |
| 58 #define UNSAFE_ENTRY(result_type, header) \ | |
| 59 JVM_ENTRY(result_type, header) | |
| 60 | |
| 61 // Can't use UNSAFE_LEAF because it has the signature of a straight | |
| 62 // call into the runtime (just like JVM_LEAF, funny that) but it's | |
| 63 // called like a Java Native and thus the wrapper built for it passes | |
| 64 // arguments like a JNI call. It expects those arguments to be popped | |
| 65 // from the stack on Intel like all good JNI args are, and adjusts the | |
| 66 // stack according. Since the JVM_LEAF call expects no extra | |
| 67 // arguments the stack isn't popped in the C code, is pushed by the | |
| 68 // wrapper and we get sick. | |
| 69 //#define UNSAFE_LEAF(result_type, header) \ | |
| 70 // JVM_LEAF(result_type, header) | |
| 71 | |
| 72 #define UNSAFE_END JVM_END | |
| 73 | |
| 74 #define UnsafeWrapper(arg) /*nothing, for the present*/ | |
| 75 | |
| 76 | |
| 77 inline void* addr_from_java(jlong addr) { | |
| 78 // This assert fails in a variety of ways on 32-bit systems. | |
| 79 // It is impossible to predict whether native code that converts | |
| 80 // pointers to longs will sign-extend or zero-extend the addresses. | |
| 81 //assert(addr == (uintptr_t)addr, "must not be odd high bits"); | |
| 82 return (void*)(uintptr_t)addr; | |
| 83 } | |
| 84 | |
| 85 inline jlong addr_to_java(void* p) { | |
| 86 assert(p == (void*)(uintptr_t)p, "must not be odd high bits"); | |
| 87 return (uintptr_t)p; | |
| 88 } | |
| 89 | |
| 90 | |
| 91 // Note: The VM's obj_field and related accessors use byte-scaled | |
| 92 // ("unscaled") offsets, just as the unsafe methods do. | |
| 93 | |
| 94 // However, the method Unsafe.fieldOffset explicitly declines to | |
| 95 // guarantee this. The field offset values manipulated by the Java user | |
| 96 // through the Unsafe API are opaque cookies that just happen to be byte | |
| 97 // offsets. We represent this state of affairs by passing the cookies | |
| 98 // through conversion functions when going between the VM and the Unsafe API. | |
| 99 // The conversion functions just happen to be no-ops at present. | |
| 100 | |
| 101 inline jlong field_offset_to_byte_offset(jlong field_offset) { | |
| 102 return field_offset; | |
| 103 } | |
| 104 | |
| 105 inline jlong field_offset_from_byte_offset(jlong byte_offset) { | |
| 106 return byte_offset; | |
| 107 } | |
| 108 | |
| 109 inline jint invocation_key_from_method_slot(jint slot) { | |
| 110 return slot; | |
| 111 } | |
| 112 | |
| 113 inline jint invocation_key_to_method_slot(jint key) { | |
| 114 return key; | |
| 115 } | |
| 116 | |
| 117 inline void* index_oop_from_field_offset_long(oop p, jlong field_offset) { | |
| 118 jlong byte_offset = field_offset_to_byte_offset(field_offset); | |
| 119 #ifdef ASSERT | |
| 120 if (p != NULL) { | |
| 121 assert(byte_offset >= 0 && byte_offset <= (jlong)MAX_OBJECT_SIZE, "sane offset"); | |
| 122 if (byte_offset == (jint)byte_offset) { | |
| 123 void* ptr_plus_disp = (address)p + byte_offset; | |
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124 assert((void*)p->obj_field_addr<oop>((jint)byte_offset) == ptr_plus_disp, |
| 0 | 125 "raw [ptr+disp] must be consistent with oop::field_base"); |
| 126 } | |
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127 jlong p_size = HeapWordSize * (jlong)(p->size()); |
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128 assert(byte_offset < p_size, err_msg("Unsafe access: offset " INT64_FORMAT " > object's size " INT64_FORMAT, byte_offset, p_size)); |
| 0 | 129 } |
| 130 #endif | |
| 131 if (sizeof(char*) == sizeof(jint)) // (this constant folds!) | |
| 132 return (address)p + (jint) byte_offset; | |
| 133 else | |
| 134 return (address)p + byte_offset; | |
| 135 } | |
| 136 | |
| 137 // Externally callable versions: | |
| 138 // (Use these in compiler intrinsics which emulate unsafe primitives.) | |
| 139 jlong Unsafe_field_offset_to_byte_offset(jlong field_offset) { | |
| 140 return field_offset; | |
| 141 } | |
| 142 jlong Unsafe_field_offset_from_byte_offset(jlong byte_offset) { | |
| 143 return byte_offset; | |
| 144 } | |
| 145 jint Unsafe_invocation_key_from_method_slot(jint slot) { | |
| 146 return invocation_key_from_method_slot(slot); | |
| 147 } | |
| 148 jint Unsafe_invocation_key_to_method_slot(jint key) { | |
| 149 return invocation_key_to_method_slot(key); | |
| 150 } | |
| 151 | |
| 152 | |
| 153 ///// Data in the Java heap. | |
| 154 | |
| 155 #define GET_FIELD(obj, offset, type_name, v) \ | |
| 156 oop p = JNIHandles::resolve(obj); \ | |
| 157 type_name v = *(type_name*)index_oop_from_field_offset_long(p, offset) | |
| 158 | |
| 159 #define SET_FIELD(obj, offset, type_name, x) \ | |
| 160 oop p = JNIHandles::resolve(obj); \ | |
| 161 *(type_name*)index_oop_from_field_offset_long(p, offset) = x | |
| 162 | |
| 163 #define GET_FIELD_VOLATILE(obj, offset, type_name, v) \ | |
| 164 oop p = JNIHandles::resolve(obj); \ | |
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165 volatile type_name v = OrderAccess::load_acquire((volatile type_name*)index_oop_from_field_offset_long(p, offset)); |
| 0 | 166 |
| 167 #define SET_FIELD_VOLATILE(obj, offset, type_name, x) \ | |
| 168 oop p = JNIHandles::resolve(obj); \ | |
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169 OrderAccess::release_store_fence((volatile type_name*)index_oop_from_field_offset_long(p, offset), x); |
| 0 | 170 |
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171 // Macros for oops that check UseCompressedOops |
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172 |
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173 #define GET_OOP_FIELD(obj, offset, v) \ |
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174 oop p = JNIHandles::resolve(obj); \ |
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175 oop v; \ |
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176 if (UseCompressedOops) { \ |
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177 narrowOop n = *(narrowOop*)index_oop_from_field_offset_long(p, offset); \ |
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178 v = oopDesc::decode_heap_oop(n); \ |
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179 } else { \ |
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180 v = *(oop*)index_oop_from_field_offset_long(p, offset); \ |
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181 } |
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182 |
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183 |
| 0 | 184 // Get/SetObject must be special-cased, since it works with handles. |
| 185 | |
| 186 // The xxx140 variants for backward compatibility do not allow a full-width offset. | |
| 187 UNSAFE_ENTRY(jobject, Unsafe_GetObject140(JNIEnv *env, jobject unsafe, jobject obj, jint offset)) | |
| 188 UnsafeWrapper("Unsafe_GetObject"); | |
| 189 if (obj == NULL) THROW_0(vmSymbols::java_lang_NullPointerException()); | |
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190 GET_OOP_FIELD(obj, offset, v) |
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191 jobject ret = JNIHandles::make_local(env, v); |
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192 #if INCLUDE_ALL_GCS |
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193 // We could be accessing the referent field in a reference |
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194 // object. If G1 is enabled then we need to register a non-null |
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195 // referent with the SATB barrier. |
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196 if (UseG1GC) { |
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197 bool needs_barrier = false; |
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198 |
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199 if (ret != NULL) { |
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200 if (offset == java_lang_ref_Reference::referent_offset) { |
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201 oop o = JNIHandles::resolve_non_null(obj); |
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202 Klass* k = o->klass(); |
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203 if (InstanceKlass::cast(k)->reference_type() != REF_NONE) { |
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204 assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity"); |
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205 needs_barrier = true; |
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206 } |
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207 } |
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208 } |
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209 |
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210 if (needs_barrier) { |
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211 oop referent = JNIHandles::resolve(ret); |
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212 G1SATBCardTableModRefBS::enqueue(referent); |
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213 } |
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214 } |
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215 #endif // INCLUDE_ALL_GCS |
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216 return ret; |
| 0 | 217 UNSAFE_END |
| 218 | |
| 219 UNSAFE_ENTRY(void, Unsafe_SetObject140(JNIEnv *env, jobject unsafe, jobject obj, jint offset, jobject x_h)) | |
| 220 UnsafeWrapper("Unsafe_SetObject"); | |
| 221 if (obj == NULL) THROW(vmSymbols::java_lang_NullPointerException()); | |
| 222 oop x = JNIHandles::resolve(x_h); | |
| 223 //SET_FIELD(obj, offset, oop, x); | |
| 224 oop p = JNIHandles::resolve(obj); | |
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225 if (UseCompressedOops) { |
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226 if (x != NULL) { |
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227 // If there is a heap base pointer, we are obliged to emit a store barrier. |
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228 oop_store((narrowOop*)index_oop_from_field_offset_long(p, offset), x); |
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229 } else { |
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230 narrowOop n = oopDesc::encode_heap_oop_not_null(x); |
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231 *(narrowOop*)index_oop_from_field_offset_long(p, offset) = n; |
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232 } |
| 0 | 233 } else { |
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234 if (x != NULL) { |
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235 // If there is a heap base pointer, we are obliged to emit a store barrier. |
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236 oop_store((oop*)index_oop_from_field_offset_long(p, offset), x); |
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237 } else { |
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238 *(oop*)index_oop_from_field_offset_long(p, offset) = x; |
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239 } |
| 0 | 240 } |
| 241 UNSAFE_END | |
| 242 | |
| 243 // The normal variants allow a null base pointer with an arbitrary address. | |
| 244 // But if the base pointer is non-null, the offset should make some sense. | |
| 245 // That is, it should be in the range [0, MAX_OBJECT_SIZE]. | |
| 246 UNSAFE_ENTRY(jobject, Unsafe_GetObject(JNIEnv *env, jobject unsafe, jobject obj, jlong offset)) | |
| 247 UnsafeWrapper("Unsafe_GetObject"); | |
|
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248 GET_OOP_FIELD(obj, offset, v) |
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249 jobject ret = JNIHandles::make_local(env, v); |
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250 #if INCLUDE_ALL_GCS |
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251 // We could be accessing the referent field in a reference |
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252 // object. If G1 is enabled then we need to register non-null |
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253 // referent with the SATB barrier. |
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254 if (UseG1GC) { |
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255 bool needs_barrier = false; |
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256 |
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257 if (ret != NULL) { |
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258 if (offset == java_lang_ref_Reference::referent_offset && obj != NULL) { |
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259 oop o = JNIHandles::resolve(obj); |
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260 Klass* k = o->klass(); |
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261 if (InstanceKlass::cast(k)->reference_type() != REF_NONE) { |
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262 assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity"); |
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263 needs_barrier = true; |
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264 } |
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265 } |
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266 } |
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267 |
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268 if (needs_barrier) { |
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269 oop referent = JNIHandles::resolve(ret); |
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270 G1SATBCardTableModRefBS::enqueue(referent); |
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271 } |
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272 } |
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273 #endif // INCLUDE_ALL_GCS |
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274 return ret; |
| 0 | 275 UNSAFE_END |
| 276 | |
| 277 UNSAFE_ENTRY(void, Unsafe_SetObject(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jobject x_h)) | |
| 278 UnsafeWrapper("Unsafe_SetObject"); | |
| 279 oop x = JNIHandles::resolve(x_h); | |
| 280 oop p = JNIHandles::resolve(obj); | |
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281 if (UseCompressedOops) { |
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282 oop_store((narrowOop*)index_oop_from_field_offset_long(p, offset), x); |
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283 } else { |
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284 oop_store((oop*)index_oop_from_field_offset_long(p, offset), x); |
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285 } |
| 0 | 286 UNSAFE_END |
| 287 | |
| 288 UNSAFE_ENTRY(jobject, Unsafe_GetObjectVolatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset)) | |
| 289 UnsafeWrapper("Unsafe_GetObjectVolatile"); | |
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290 oop p = JNIHandles::resolve(obj); |
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291 void* addr = index_oop_from_field_offset_long(p, offset); |
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292 volatile oop v; |
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293 if (UseCompressedOops) { |
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294 volatile narrowOop n = *(volatile narrowOop*) addr; |
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295 (void)const_cast<oop&>(v = oopDesc::decode_heap_oop(n)); |
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296 } else { |
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297 (void)const_cast<oop&>(v = *(volatile oop*) addr); |
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298 } |
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299 OrderAccess::acquire(); |
| 0 | 300 return JNIHandles::make_local(env, v); |
| 301 UNSAFE_END | |
| 302 | |
| 303 UNSAFE_ENTRY(void, Unsafe_SetObjectVolatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jobject x_h)) | |
| 304 UnsafeWrapper("Unsafe_SetObjectVolatile"); | |
| 305 oop x = JNIHandles::resolve(x_h); | |
| 306 oop p = JNIHandles::resolve(obj); | |
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307 void* addr = index_oop_from_field_offset_long(p, offset); |
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308 OrderAccess::release(); |
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309 if (UseCompressedOops) { |
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310 oop_store((narrowOop*)addr, x); |
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311 } else { |
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312 oop_store((oop*)addr, x); |
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313 } |
| 0 | 314 OrderAccess::fence(); |
| 315 UNSAFE_END | |
| 316 | |
| 10235 | 317 #ifndef SUPPORTS_NATIVE_CX8 |
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318 // Keep old code for platforms which may not have atomic jlong (8 bytes) instructions |
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319 |
| 0 | 320 // Volatile long versions must use locks if !VM_Version::supports_cx8(). |
| 321 // support_cx8 is a surrogate for 'supports atomic long memory ops'. | |
| 322 | |
| 323 UNSAFE_ENTRY(jlong, Unsafe_GetLongVolatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset)) | |
| 324 UnsafeWrapper("Unsafe_GetLongVolatile"); | |
| 325 { | |
| 326 if (VM_Version::supports_cx8()) { | |
| 327 GET_FIELD_VOLATILE(obj, offset, jlong, v); | |
| 328 return v; | |
| 329 } | |
| 330 else { | |
| 331 Handle p (THREAD, JNIHandles::resolve(obj)); | |
| 332 jlong* addr = (jlong*)(index_oop_from_field_offset_long(p(), offset)); | |
| 333 ObjectLocker ol(p, THREAD); | |
| 334 jlong value = *addr; | |
| 335 return value; | |
| 336 } | |
| 337 } | |
| 338 UNSAFE_END | |
| 339 | |
| 340 UNSAFE_ENTRY(void, Unsafe_SetLongVolatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jlong x)) | |
| 341 UnsafeWrapper("Unsafe_SetLongVolatile"); | |
| 342 { | |
| 343 if (VM_Version::supports_cx8()) { | |
| 344 SET_FIELD_VOLATILE(obj, offset, jlong, x); | |
| 345 } | |
| 346 else { | |
| 347 Handle p (THREAD, JNIHandles::resolve(obj)); | |
| 348 jlong* addr = (jlong*)(index_oop_from_field_offset_long(p(), offset)); | |
| 349 ObjectLocker ol(p, THREAD); | |
| 350 *addr = x; | |
| 351 } | |
| 352 } | |
| 353 UNSAFE_END | |
| 354 | |
| 10235 | 355 #endif // not SUPPORTS_NATIVE_CX8 |
| 0 | 356 |
| 357 #define DEFINE_GETSETOOP(jboolean, Boolean) \ | |
| 358 \ | |
| 359 UNSAFE_ENTRY(jboolean, Unsafe_Get##Boolean##140(JNIEnv *env, jobject unsafe, jobject obj, jint offset)) \ | |
| 360 UnsafeWrapper("Unsafe_Get"#Boolean); \ | |
| 361 if (obj == NULL) THROW_0(vmSymbols::java_lang_NullPointerException()); \ | |
| 362 GET_FIELD(obj, offset, jboolean, v); \ | |
| 363 return v; \ | |
| 364 UNSAFE_END \ | |
| 365 \ | |
| 366 UNSAFE_ENTRY(void, Unsafe_Set##Boolean##140(JNIEnv *env, jobject unsafe, jobject obj, jint offset, jboolean x)) \ | |
| 367 UnsafeWrapper("Unsafe_Set"#Boolean); \ | |
| 368 if (obj == NULL) THROW(vmSymbols::java_lang_NullPointerException()); \ | |
| 369 SET_FIELD(obj, offset, jboolean, x); \ | |
| 370 UNSAFE_END \ | |
| 371 \ | |
| 372 UNSAFE_ENTRY(jboolean, Unsafe_Get##Boolean(JNIEnv *env, jobject unsafe, jobject obj, jlong offset)) \ | |
| 373 UnsafeWrapper("Unsafe_Get"#Boolean); \ | |
| 374 GET_FIELD(obj, offset, jboolean, v); \ | |
| 375 return v; \ | |
| 376 UNSAFE_END \ | |
| 377 \ | |
| 378 UNSAFE_ENTRY(void, Unsafe_Set##Boolean(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jboolean x)) \ | |
| 379 UnsafeWrapper("Unsafe_Set"#Boolean); \ | |
| 380 SET_FIELD(obj, offset, jboolean, x); \ | |
| 381 UNSAFE_END \ | |
| 382 \ | |
| 383 // END DEFINE_GETSETOOP. | |
| 384 | |
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385 DEFINE_GETSETOOP(jboolean, Boolean) |
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386 DEFINE_GETSETOOP(jbyte, Byte) |
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387 DEFINE_GETSETOOP(jshort, Short); |
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388 DEFINE_GETSETOOP(jchar, Char); |
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389 DEFINE_GETSETOOP(jint, Int); |
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390 DEFINE_GETSETOOP(jlong, Long); |
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391 DEFINE_GETSETOOP(jfloat, Float); |
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392 DEFINE_GETSETOOP(jdouble, Double); |
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393 |
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394 #undef DEFINE_GETSETOOP |
| 0 | 395 |
| 396 #define DEFINE_GETSETOOP_VOLATILE(jboolean, Boolean) \ | |
| 397 \ | |
| 398 UNSAFE_ENTRY(jboolean, Unsafe_Get##Boolean##Volatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset)) \ | |
| 399 UnsafeWrapper("Unsafe_Get"#Boolean); \ | |
| 400 GET_FIELD_VOLATILE(obj, offset, jboolean, v); \ | |
| 401 return v; \ | |
| 402 UNSAFE_END \ | |
| 403 \ | |
| 404 UNSAFE_ENTRY(void, Unsafe_Set##Boolean##Volatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jboolean x)) \ | |
| 405 UnsafeWrapper("Unsafe_Set"#Boolean); \ | |
| 406 SET_FIELD_VOLATILE(obj, offset, jboolean, x); \ | |
| 407 UNSAFE_END \ | |
| 408 \ | |
| 409 // END DEFINE_GETSETOOP_VOLATILE. | |
| 410 | |
| 411 DEFINE_GETSETOOP_VOLATILE(jboolean, Boolean) | |
| 412 DEFINE_GETSETOOP_VOLATILE(jbyte, Byte) | |
| 413 DEFINE_GETSETOOP_VOLATILE(jshort, Short); | |
| 414 DEFINE_GETSETOOP_VOLATILE(jchar, Char); | |
| 415 DEFINE_GETSETOOP_VOLATILE(jint, Int); | |
| 416 DEFINE_GETSETOOP_VOLATILE(jfloat, Float); | |
| 417 DEFINE_GETSETOOP_VOLATILE(jdouble, Double); | |
| 418 | |
| 10235 | 419 #ifdef SUPPORTS_NATIVE_CX8 |
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420 DEFINE_GETSETOOP_VOLATILE(jlong, Long); |
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421 #endif |
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422 |
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423 #undef DEFINE_GETSETOOP_VOLATILE |
| 0 | 424 |
| 425 // The non-intrinsified versions of setOrdered just use setVolatile | |
| 426 | |
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427 UNSAFE_ENTRY(void, Unsafe_SetOrderedInt(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jint x)) |
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428 UnsafeWrapper("Unsafe_SetOrderedInt"); |
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429 SET_FIELD_VOLATILE(obj, offset, jint, x); |
| 0 | 430 UNSAFE_END |
| 431 | |
| 432 UNSAFE_ENTRY(void, Unsafe_SetOrderedObject(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jobject x_h)) | |
| 433 UnsafeWrapper("Unsafe_SetOrderedObject"); | |
| 434 oop x = JNIHandles::resolve(x_h); | |
| 435 oop p = JNIHandles::resolve(obj); | |
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436 void* addr = index_oop_from_field_offset_long(p, offset); |
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437 OrderAccess::release(); |
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438 if (UseCompressedOops) { |
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439 oop_store((narrowOop*)addr, x); |
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440 } else { |
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441 oop_store((oop*)addr, x); |
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442 } |
| 0 | 443 OrderAccess::fence(); |
| 444 UNSAFE_END | |
| 445 | |
| 446 UNSAFE_ENTRY(void, Unsafe_SetOrderedLong(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jlong x)) | |
| 447 UnsafeWrapper("Unsafe_SetOrderedLong"); | |
| 10235 | 448 #ifdef SUPPORTS_NATIVE_CX8 |
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449 SET_FIELD_VOLATILE(obj, offset, jlong, x); |
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450 #else |
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451 // Keep old code for platforms which may not have atomic long (8 bytes) instructions |
| 0 | 452 { |
| 453 if (VM_Version::supports_cx8()) { | |
| 454 SET_FIELD_VOLATILE(obj, offset, jlong, x); | |
| 455 } | |
| 456 else { | |
| 457 Handle p (THREAD, JNIHandles::resolve(obj)); | |
| 458 jlong* addr = (jlong*)(index_oop_from_field_offset_long(p(), offset)); | |
| 459 ObjectLocker ol(p, THREAD); | |
| 460 *addr = x; | |
| 461 } | |
| 462 } | |
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463 #endif |
| 0 | 464 UNSAFE_END |
| 465 | |
| 7425 | 466 UNSAFE_ENTRY(void, Unsafe_LoadFence(JNIEnv *env, jobject unsafe)) |
| 467 UnsafeWrapper("Unsafe_LoadFence"); | |
| 468 OrderAccess::acquire(); | |
| 469 UNSAFE_END | |
| 470 | |
| 471 UNSAFE_ENTRY(void, Unsafe_StoreFence(JNIEnv *env, jobject unsafe)) | |
| 472 UnsafeWrapper("Unsafe_StoreFence"); | |
| 473 OrderAccess::release(); | |
| 474 UNSAFE_END | |
| 475 | |
| 476 UNSAFE_ENTRY(void, Unsafe_FullFence(JNIEnv *env, jobject unsafe)) | |
| 477 UnsafeWrapper("Unsafe_FullFence"); | |
| 478 OrderAccess::fence(); | |
| 479 UNSAFE_END | |
| 480 | |
| 0 | 481 ////// Data in the C heap. |
| 482 | |
| 483 // Note: These do not throw NullPointerException for bad pointers. | |
| 484 // They just crash. Only a oop base pointer can generate a NullPointerException. | |
| 485 // | |
| 486 #define DEFINE_GETSETNATIVE(java_type, Type, native_type) \ | |
| 487 \ | |
| 488 UNSAFE_ENTRY(java_type, Unsafe_GetNative##Type(JNIEnv *env, jobject unsafe, jlong addr)) \ | |
| 489 UnsafeWrapper("Unsafe_GetNative"#Type); \ | |
| 490 void* p = addr_from_java(addr); \ | |
| 491 JavaThread* t = JavaThread::current(); \ | |
| 492 t->set_doing_unsafe_access(true); \ | |
| 493 java_type x = *(volatile native_type*)p; \ | |
| 494 t->set_doing_unsafe_access(false); \ | |
| 495 return x; \ | |
| 496 UNSAFE_END \ | |
| 497 \ | |
| 498 UNSAFE_ENTRY(void, Unsafe_SetNative##Type(JNIEnv *env, jobject unsafe, jlong addr, java_type x)) \ | |
| 499 UnsafeWrapper("Unsafe_SetNative"#Type); \ | |
| 500 JavaThread* t = JavaThread::current(); \ | |
| 501 t->set_doing_unsafe_access(true); \ | |
| 502 void* p = addr_from_java(addr); \ | |
| 503 *(volatile native_type*)p = x; \ | |
| 504 t->set_doing_unsafe_access(false); \ | |
| 505 UNSAFE_END \ | |
| 506 \ | |
| 507 // END DEFINE_GETSETNATIVE. | |
| 508 | |
| 509 DEFINE_GETSETNATIVE(jbyte, Byte, signed char) | |
| 510 DEFINE_GETSETNATIVE(jshort, Short, signed short); | |
| 511 DEFINE_GETSETNATIVE(jchar, Char, unsigned short); | |
| 512 DEFINE_GETSETNATIVE(jint, Int, jint); | |
| 513 // no long -- handled specially | |
| 514 DEFINE_GETSETNATIVE(jfloat, Float, float); | |
| 515 DEFINE_GETSETNATIVE(jdouble, Double, double); | |
| 516 | |
| 517 #undef DEFINE_GETSETNATIVE | |
| 518 | |
| 519 UNSAFE_ENTRY(jlong, Unsafe_GetNativeLong(JNIEnv *env, jobject unsafe, jlong addr)) | |
| 520 UnsafeWrapper("Unsafe_GetNativeLong"); | |
| 521 JavaThread* t = JavaThread::current(); | |
| 522 // We do it this way to avoid problems with access to heap using 64 | |
| 523 // bit loads, as jlong in heap could be not 64-bit aligned, and on | |
| 524 // some CPUs (SPARC) it leads to SIGBUS. | |
| 525 t->set_doing_unsafe_access(true); | |
| 526 void* p = addr_from_java(addr); | |
| 527 jlong x; | |
| 528 if (((intptr_t)p & 7) == 0) { | |
| 529 // jlong is aligned, do a volatile access | |
| 530 x = *(volatile jlong*)p; | |
| 531 } else { | |
| 532 jlong_accessor acc; | |
| 533 acc.words[0] = ((volatile jint*)p)[0]; | |
| 534 acc.words[1] = ((volatile jint*)p)[1]; | |
| 535 x = acc.long_value; | |
| 536 } | |
| 537 t->set_doing_unsafe_access(false); | |
| 538 return x; | |
| 539 UNSAFE_END | |
| 540 | |
| 541 UNSAFE_ENTRY(void, Unsafe_SetNativeLong(JNIEnv *env, jobject unsafe, jlong addr, jlong x)) | |
| 542 UnsafeWrapper("Unsafe_SetNativeLong"); | |
| 543 JavaThread* t = JavaThread::current(); | |
| 544 // see comment for Unsafe_GetNativeLong | |
| 545 t->set_doing_unsafe_access(true); | |
| 546 void* p = addr_from_java(addr); | |
| 547 if (((intptr_t)p & 7) == 0) { | |
| 548 // jlong is aligned, do a volatile access | |
| 549 *(volatile jlong*)p = x; | |
| 550 } else { | |
| 551 jlong_accessor acc; | |
| 552 acc.long_value = x; | |
| 553 ((volatile jint*)p)[0] = acc.words[0]; | |
| 554 ((volatile jint*)p)[1] = acc.words[1]; | |
| 555 } | |
| 556 t->set_doing_unsafe_access(false); | |
| 557 UNSAFE_END | |
| 558 | |
| 559 | |
| 560 UNSAFE_ENTRY(jlong, Unsafe_GetNativeAddress(JNIEnv *env, jobject unsafe, jlong addr)) | |
| 561 UnsafeWrapper("Unsafe_GetNativeAddress"); | |
| 562 void* p = addr_from_java(addr); | |
| 563 return addr_to_java(*(void**)p); | |
| 564 UNSAFE_END | |
| 565 | |
| 566 UNSAFE_ENTRY(void, Unsafe_SetNativeAddress(JNIEnv *env, jobject unsafe, jlong addr, jlong x)) | |
| 567 UnsafeWrapper("Unsafe_SetNativeAddress"); | |
| 568 void* p = addr_from_java(addr); | |
| 569 *(void**)p = addr_from_java(x); | |
| 570 UNSAFE_END | |
| 571 | |
| 572 | |
| 573 ////// Allocation requests | |
| 574 | |
| 575 UNSAFE_ENTRY(jobject, Unsafe_AllocateInstance(JNIEnv *env, jobject unsafe, jclass cls)) | |
| 576 UnsafeWrapper("Unsafe_AllocateInstance"); | |
| 577 { | |
| 578 ThreadToNativeFromVM ttnfv(thread); | |
| 579 return env->AllocObject(cls); | |
| 580 } | |
| 581 UNSAFE_END | |
| 582 | |
| 583 UNSAFE_ENTRY(jlong, Unsafe_AllocateMemory(JNIEnv *env, jobject unsafe, jlong size)) | |
| 584 UnsafeWrapper("Unsafe_AllocateMemory"); | |
| 585 size_t sz = (size_t)size; | |
| 586 if (sz != (julong)size || size < 0) { | |
| 587 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
| 588 } | |
| 589 if (sz == 0) { | |
| 590 return 0; | |
| 591 } | |
| 592 sz = round_to(sz, HeapWordSize); | |
| 6197 | 593 void* x = os::malloc(sz, mtInternal); |
| 0 | 594 if (x == NULL) { |
| 595 THROW_0(vmSymbols::java_lang_OutOfMemoryError()); | |
| 596 } | |
| 597 //Copy::fill_to_words((HeapWord*)x, sz / HeapWordSize); | |
| 598 return addr_to_java(x); | |
| 599 UNSAFE_END | |
| 600 | |
| 601 UNSAFE_ENTRY(jlong, Unsafe_ReallocateMemory(JNIEnv *env, jobject unsafe, jlong addr, jlong size)) | |
| 602 UnsafeWrapper("Unsafe_ReallocateMemory"); | |
| 603 void* p = addr_from_java(addr); | |
| 604 size_t sz = (size_t)size; | |
| 605 if (sz != (julong)size || size < 0) { | |
| 606 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
| 607 } | |
| 608 if (sz == 0) { | |
| 609 os::free(p); | |
| 610 return 0; | |
| 611 } | |
| 612 sz = round_to(sz, HeapWordSize); | |
| 6197 | 613 void* x = (p == NULL) ? os::malloc(sz, mtInternal) : os::realloc(p, sz, mtInternal); |
| 0 | 614 if (x == NULL) { |
| 615 THROW_0(vmSymbols::java_lang_OutOfMemoryError()); | |
| 616 } | |
| 617 return addr_to_java(x); | |
| 618 UNSAFE_END | |
| 619 | |
| 620 UNSAFE_ENTRY(void, Unsafe_FreeMemory(JNIEnv *env, jobject unsafe, jlong addr)) | |
| 621 UnsafeWrapper("Unsafe_FreeMemory"); | |
| 622 void* p = addr_from_java(addr); | |
| 623 if (p == NULL) { | |
| 624 return; | |
| 625 } | |
| 626 os::free(p); | |
| 627 UNSAFE_END | |
| 628 | |
| 629 UNSAFE_ENTRY(void, Unsafe_SetMemory(JNIEnv *env, jobject unsafe, jlong addr, jlong size, jbyte value)) | |
| 630 UnsafeWrapper("Unsafe_SetMemory"); | |
| 631 size_t sz = (size_t)size; | |
| 632 if (sz != (julong)size || size < 0) { | |
| 633 THROW(vmSymbols::java_lang_IllegalArgumentException()); | |
| 634 } | |
| 635 char* p = (char*) addr_from_java(addr); | |
| 636 Copy::fill_to_memory_atomic(p, sz, value); | |
| 637 UNSAFE_END | |
| 638 | |
| 639 UNSAFE_ENTRY(void, Unsafe_SetMemory2(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jlong size, jbyte value)) | |
| 640 UnsafeWrapper("Unsafe_SetMemory"); | |
| 641 size_t sz = (size_t)size; | |
| 642 if (sz != (julong)size || size < 0) { | |
| 643 THROW(vmSymbols::java_lang_IllegalArgumentException()); | |
| 644 } | |
| 645 oop base = JNIHandles::resolve(obj); | |
| 646 void* p = index_oop_from_field_offset_long(base, offset); | |
| 647 Copy::fill_to_memory_atomic(p, sz, value); | |
| 648 UNSAFE_END | |
| 649 | |
| 650 UNSAFE_ENTRY(void, Unsafe_CopyMemory(JNIEnv *env, jobject unsafe, jlong srcAddr, jlong dstAddr, jlong size)) | |
| 651 UnsafeWrapper("Unsafe_CopyMemory"); | |
| 652 if (size == 0) { | |
| 653 return; | |
| 654 } | |
| 655 size_t sz = (size_t)size; | |
| 656 if (sz != (julong)size || size < 0) { | |
| 657 THROW(vmSymbols::java_lang_IllegalArgumentException()); | |
| 658 } | |
| 659 void* src = addr_from_java(srcAddr); | |
| 660 void* dst = addr_from_java(dstAddr); | |
| 661 Copy::conjoint_memory_atomic(src, dst, sz); | |
| 662 UNSAFE_END | |
| 663 | |
| 664 UNSAFE_ENTRY(void, Unsafe_CopyMemory2(JNIEnv *env, jobject unsafe, jobject srcObj, jlong srcOffset, jobject dstObj, jlong dstOffset, jlong size)) | |
| 665 UnsafeWrapper("Unsafe_CopyMemory"); | |
| 666 if (size == 0) { | |
| 667 return; | |
| 668 } | |
| 669 size_t sz = (size_t)size; | |
| 670 if (sz != (julong)size || size < 0) { | |
| 671 THROW(vmSymbols::java_lang_IllegalArgumentException()); | |
| 672 } | |
| 673 oop srcp = JNIHandles::resolve(srcObj); | |
| 674 oop dstp = JNIHandles::resolve(dstObj); | |
| 675 if (dstp != NULL && !dstp->is_typeArray()) { | |
| 676 // NYI: This works only for non-oop arrays at present. | |
| 677 // Generalizing it would be reasonable, but requires card marking. | |
| 678 // Also, autoboxing a Long from 0L in copyMemory(x,y, 0L,z, n) would be bad. | |
| 679 THROW(vmSymbols::java_lang_IllegalArgumentException()); | |
| 680 } | |
| 681 void* src = index_oop_from_field_offset_long(srcp, srcOffset); | |
| 682 void* dst = index_oop_from_field_offset_long(dstp, dstOffset); | |
| 683 Copy::conjoint_memory_atomic(src, dst, sz); | |
| 684 UNSAFE_END | |
| 685 | |
| 686 | |
| 687 ////// Random queries | |
| 688 | |
| 689 // See comment at file start about UNSAFE_LEAF | |
| 690 //UNSAFE_LEAF(jint, Unsafe_AddressSize()) | |
| 691 UNSAFE_ENTRY(jint, Unsafe_AddressSize(JNIEnv *env, jobject unsafe)) | |
| 692 UnsafeWrapper("Unsafe_AddressSize"); | |
| 693 return sizeof(void*); | |
| 694 UNSAFE_END | |
| 695 | |
| 696 // See comment at file start about UNSAFE_LEAF | |
| 697 //UNSAFE_LEAF(jint, Unsafe_PageSize()) | |
| 698 UNSAFE_ENTRY(jint, Unsafe_PageSize(JNIEnv *env, jobject unsafe)) | |
| 699 UnsafeWrapper("Unsafe_PageSize"); | |
| 700 return os::vm_page_size(); | |
| 701 UNSAFE_END | |
| 702 | |
| 703 jint find_field_offset(jobject field, int must_be_static, TRAPS) { | |
| 704 if (field == NULL) { | |
| 705 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 706 } | |
| 707 | |
| 708 oop reflected = JNIHandles::resolve_non_null(field); | |
| 709 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
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710 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 711 int slot = java_lang_reflect_Field::slot(reflected); |
| 712 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
| 713 | |
| 714 if (must_be_static >= 0) { | |
| 715 int really_is_static = ((modifiers & JVM_ACC_STATIC) != 0); | |
| 716 if (must_be_static != really_is_static) { | |
| 717 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
| 718 } | |
| 719 } | |
| 720 | |
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721 int offset = InstanceKlass::cast(k)->field_offset(slot); |
| 0 | 722 return field_offset_from_byte_offset(offset); |
| 723 } | |
| 724 | |
| 725 UNSAFE_ENTRY(jlong, Unsafe_ObjectFieldOffset(JNIEnv *env, jobject unsafe, jobject field)) | |
| 726 UnsafeWrapper("Unsafe_ObjectFieldOffset"); | |
| 727 return find_field_offset(field, 0, THREAD); | |
| 728 UNSAFE_END | |
| 729 | |
| 730 UNSAFE_ENTRY(jlong, Unsafe_StaticFieldOffset(JNIEnv *env, jobject unsafe, jobject field)) | |
| 731 UnsafeWrapper("Unsafe_StaticFieldOffset"); | |
| 732 return find_field_offset(field, 1, THREAD); | |
| 733 UNSAFE_END | |
| 734 | |
| 735 UNSAFE_ENTRY(jobject, Unsafe_StaticFieldBaseFromField(JNIEnv *env, jobject unsafe, jobject field)) | |
| 736 UnsafeWrapper("Unsafe_StaticFieldBase"); | |
| 737 // Note: In this VM implementation, a field address is always a short | |
| 738 // offset from the base of a a klass metaobject. Thus, the full dynamic | |
| 739 // range of the return type is never used. However, some implementations | |
| 740 // might put the static field inside an array shared by many classes, | |
| 741 // or even at a fixed address, in which case the address could be quite | |
| 742 // large. In that last case, this function would return NULL, since | |
| 743 // the address would operate alone, without any base pointer. | |
| 744 | |
| 745 if (field == NULL) THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 746 | |
| 747 oop reflected = JNIHandles::resolve_non_null(field); | |
| 748 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
| 749 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
| 750 | |
| 751 if ((modifiers & JVM_ACC_STATIC) == 0) { | |
| 752 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
| 753 } | |
| 754 | |
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755 return JNIHandles::make_local(env, mirror); |
| 0 | 756 UNSAFE_END |
| 757 | |
| 758 //@deprecated | |
| 759 UNSAFE_ENTRY(jint, Unsafe_FieldOffset(JNIEnv *env, jobject unsafe, jobject field)) | |
| 760 UnsafeWrapper("Unsafe_FieldOffset"); | |
| 761 // tries (but fails) to be polymorphic between static and non-static: | |
| 762 jlong offset = find_field_offset(field, -1, THREAD); | |
| 763 guarantee(offset == (jint)offset, "offset fits in 32 bits"); | |
| 764 return (jint)offset; | |
| 765 UNSAFE_END | |
| 766 | |
| 767 //@deprecated | |
| 768 UNSAFE_ENTRY(jobject, Unsafe_StaticFieldBaseFromClass(JNIEnv *env, jobject unsafe, jobject clazz)) | |
| 769 UnsafeWrapper("Unsafe_StaticFieldBase"); | |
| 770 if (clazz == NULL) { | |
| 771 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 772 } | |
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773 return JNIHandles::make_local(env, JNIHandles::resolve_non_null(clazz)); |
| 0 | 774 UNSAFE_END |
| 775 | |
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776 UNSAFE_ENTRY(void, Unsafe_EnsureClassInitialized(JNIEnv *env, jobject unsafe, jobject clazz)) { |
| 0 | 777 UnsafeWrapper("Unsafe_EnsureClassInitialized"); |
| 778 if (clazz == NULL) { | |
| 779 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 780 } | |
| 781 oop mirror = JNIHandles::resolve_non_null(clazz); | |
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782 |
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783 Klass* klass = java_lang_Class::as_Klass(mirror); |
| 6983 | 784 if (klass != NULL && klass->should_be_initialized()) { |
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785 InstanceKlass* k = InstanceKlass::cast(klass); |
| 0 | 786 k->initialize(CHECK); |
| 787 } | |
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788 } |
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789 UNSAFE_END |
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790 |
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791 UNSAFE_ENTRY(jboolean, Unsafe_ShouldBeInitialized(JNIEnv *env, jobject unsafe, jobject clazz)) { |
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792 UnsafeWrapper("Unsafe_ShouldBeInitialized"); |
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793 if (clazz == NULL) { |
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794 THROW_(vmSymbols::java_lang_NullPointerException(), false); |
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795 } |
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796 oop mirror = JNIHandles::resolve_non_null(clazz); |
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797 Klass* klass = java_lang_Class::as_Klass(mirror); |
| 6983 | 798 if (klass != NULL && klass->should_be_initialized()) { |
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799 return true; |
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800 } |
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801 return false; |
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802 } |
| 0 | 803 UNSAFE_END |
| 804 | |
| 805 static void getBaseAndScale(int& base, int& scale, jclass acls, TRAPS) { | |
| 806 if (acls == NULL) { | |
| 807 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 808 } | |
| 809 oop mirror = JNIHandles::resolve_non_null(acls); | |
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810 Klass* k = java_lang_Class::as_Klass(mirror); |
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811 if (k == NULL || !k->oop_is_array()) { |
| 0 | 812 THROW(vmSymbols::java_lang_InvalidClassException()); |
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813 } else if (k->oop_is_objArray()) { |
| 0 | 814 base = arrayOopDesc::base_offset_in_bytes(T_OBJECT); |
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815 scale = heapOopSize; |
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816 } else if (k->oop_is_typeArray()) { |
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817 TypeArrayKlass* tak = TypeArrayKlass::cast(k); |
| 0 | 818 base = tak->array_header_in_bytes(); |
| 819 assert(base == arrayOopDesc::base_offset_in_bytes(tak->element_type()), "array_header_size semantics ok"); | |
| 820 scale = (1 << tak->log2_element_size()); | |
| 821 } else { | |
| 822 ShouldNotReachHere(); | |
| 823 } | |
| 824 } | |
| 825 | |
| 826 UNSAFE_ENTRY(jint, Unsafe_ArrayBaseOffset(JNIEnv *env, jobject unsafe, jclass acls)) | |
| 827 UnsafeWrapper("Unsafe_ArrayBaseOffset"); | |
| 828 int base, scale; | |
| 829 getBaseAndScale(base, scale, acls, CHECK_0); | |
| 830 return field_offset_from_byte_offset(base); | |
| 831 UNSAFE_END | |
| 832 | |
| 833 | |
| 834 UNSAFE_ENTRY(jint, Unsafe_ArrayIndexScale(JNIEnv *env, jobject unsafe, jclass acls)) | |
| 835 UnsafeWrapper("Unsafe_ArrayIndexScale"); | |
| 836 int base, scale; | |
| 837 getBaseAndScale(base, scale, acls, CHECK_0); | |
| 838 // This VM packs both fields and array elements down to the byte. | |
| 839 // But watch out: If this changes, so that array references for | |
| 840 // a given primitive type (say, T_BOOLEAN) use different memory units | |
| 841 // than fields, this method MUST return zero for such arrays. | |
| 842 // For example, the VM used to store sub-word sized fields in full | |
| 843 // words in the object layout, so that accessors like getByte(Object,int) | |
| 844 // did not really do what one might expect for arrays. Therefore, | |
| 845 // this function used to report a zero scale factor, so that the user | |
| 846 // would know not to attempt to access sub-word array elements. | |
| 847 // // Code for unpacked fields: | |
| 848 // if (scale < wordSize) return 0; | |
| 849 | |
| 850 // The following allows for a pretty general fieldOffset cookie scheme, | |
| 851 // but requires it to be linear in byte offset. | |
| 852 return field_offset_from_byte_offset(scale) - field_offset_from_byte_offset(0); | |
| 853 UNSAFE_END | |
| 854 | |
| 855 | |
| 856 static inline void throw_new(JNIEnv *env, const char *ename) { | |
| 857 char buf[100]; | |
| 858 strcpy(buf, "java/lang/"); | |
| 859 strcat(buf, ename); | |
| 860 jclass cls = env->FindClass(buf); | |
| 861 char* msg = NULL; | |
| 862 env->ThrowNew(cls, msg); | |
| 863 } | |
| 864 | |
|
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865 static jclass Unsafe_DefineClass_impl(JNIEnv *env, jstring name, jbyteArray data, int offset, int length, jobject loader, jobject pd) { |
| 0 | 866 { |
| 867 // Code lifted from JDK 1.3 ClassLoader.c | |
| 868 | |
| 869 jbyte *body; | |
| 870 char *utfName; | |
| 871 jclass result = 0; | |
| 872 char buf[128]; | |
| 873 | |
| 874 if (UsePerfData) { | |
| 875 ClassLoader::unsafe_defineClassCallCounter()->inc(); | |
| 876 } | |
| 877 | |
| 878 if (data == NULL) { | |
| 879 throw_new(env, "NullPointerException"); | |
| 880 return 0; | |
| 881 } | |
| 882 | |
| 883 /* Work around 4153825. malloc crashes on Solaris when passed a | |
| 884 * negative size. | |
| 885 */ | |
| 886 if (length < 0) { | |
| 887 throw_new(env, "ArrayIndexOutOfBoundsException"); | |
| 888 return 0; | |
| 889 } | |
| 890 | |
| 6197 | 891 body = NEW_C_HEAP_ARRAY(jbyte, length, mtInternal); |
| 0 | 892 |
| 893 if (body == 0) { | |
| 894 throw_new(env, "OutOfMemoryError"); | |
| 895 return 0; | |
| 896 } | |
| 897 | |
| 898 env->GetByteArrayRegion(data, offset, length, body); | |
| 899 | |
| 900 if (env->ExceptionOccurred()) | |
| 901 goto free_body; | |
| 902 | |
| 903 if (name != NULL) { | |
| 904 uint len = env->GetStringUTFLength(name); | |
| 905 int unicode_len = env->GetStringLength(name); | |
| 906 if (len >= sizeof(buf)) { | |
| 6197 | 907 utfName = NEW_C_HEAP_ARRAY(char, len + 1, mtInternal); |
| 0 | 908 if (utfName == NULL) { |
| 909 throw_new(env, "OutOfMemoryError"); | |
| 910 goto free_body; | |
| 911 } | |
| 912 } else { | |
| 913 utfName = buf; | |
| 914 } | |
| 915 env->GetStringUTFRegion(name, 0, unicode_len, utfName); | |
| 916 //VerifyFixClassname(utfName); | |
| 917 for (uint i = 0; i < len; i++) { | |
| 918 if (utfName[i] == '.') utfName[i] = '/'; | |
| 919 } | |
| 920 } else { | |
| 921 utfName = NULL; | |
| 922 } | |
| 923 | |
| 924 result = JVM_DefineClass(env, utfName, loader, body, length, pd); | |
| 925 | |
| 926 if (utfName && utfName != buf) | |
| 6197 | 927 FREE_C_HEAP_ARRAY(char, utfName, mtInternal); |
| 0 | 928 |
| 929 free_body: | |
| 6197 | 930 FREE_C_HEAP_ARRAY(jbyte, body, mtInternal); |
| 0 | 931 return result; |
| 932 } | |
| 933 } | |
| 934 | |
| 935 | |
|
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936 UNSAFE_ENTRY(jclass, Unsafe_DefineClass(JNIEnv *env, jobject unsafe, jstring name, jbyteArray data, int offset, int length, jobject loader, jobject pd)) |
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937 UnsafeWrapper("Unsafe_DefineClass"); |
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938 { |
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939 ThreadToNativeFromVM ttnfv(thread); |
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940 return Unsafe_DefineClass_impl(env, name, data, offset, length, loader, pd); |
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941 } |
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942 UNSAFE_END |
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943 |
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944 |
| 0 | 945 UNSAFE_ENTRY(jclass, Unsafe_DefineClass0(JNIEnv *env, jobject unsafe, jstring name, jbyteArray data, int offset, int length)) |
| 946 UnsafeWrapper("Unsafe_DefineClass"); | |
| 947 { | |
| 948 ThreadToNativeFromVM ttnfv(thread); | |
| 949 | |
| 950 int depthFromDefineClass0 = 1; | |
| 951 jclass caller = JVM_GetCallerClass(env, depthFromDefineClass0); | |
| 952 jobject loader = (caller == NULL) ? NULL : JVM_GetClassLoader(env, caller); | |
| 953 jobject pd = (caller == NULL) ? NULL : JVM_GetProtectionDomain(env, caller); | |
| 954 | |
|
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955 return Unsafe_DefineClass_impl(env, name, data, offset, length, loader, pd); |
| 0 | 956 } |
| 957 UNSAFE_END | |
| 958 | |
| 959 | |
|
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960 #define DAC_Args CLS"[B["OBJ |
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961 // define a class but do not make it known to the class loader or system dictionary |
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962 // - host_class: supplies context for linkage, access control, protection domain, and class loader |
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963 // - data: bytes of a class file, a raw memory address (length gives the number of bytes) |
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964 // - cp_patches: where non-null entries exist, they replace corresponding CP entries in data |
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965 |
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966 // When you load an anonymous class U, it works as if you changed its name just before loading, |
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967 // to a name that you will never use again. Since the name is lost, no other class can directly |
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968 // link to any member of U. Just after U is loaded, the only way to use it is reflectively, |
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969 // through java.lang.Class methods like Class.newInstance. |
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970 |
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971 // Access checks for linkage sites within U continue to follow the same rules as for named classes. |
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972 // The package of an anonymous class is given by the package qualifier on the name under which it was loaded. |
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973 // An anonymous class also has special privileges to access any member of its host class. |
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974 // This is the main reason why this loading operation is unsafe. The purpose of this is to |
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975 // allow language implementations to simulate "open classes"; a host class in effect gets |
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976 // new code when an anonymous class is loaded alongside it. A less convenient but more |
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977 // standard way to do this is with reflection, which can also be set to ignore access |
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978 // restrictions. |
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979 |
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980 // Access into an anonymous class is possible only through reflection. Therefore, there |
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981 // are no special access rules for calling into an anonymous class. The relaxed access |
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982 // rule for the host class is applied in the opposite direction: A host class reflectively |
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983 // access one of its anonymous classes. |
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984 |
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985 // If you load the same bytecodes twice, you get two different classes. You can reload |
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986 // the same bytecodes with or without varying CP patches. |
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987 |
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988 // By using the CP patching array, you can have a new anonymous class U2 refer to an older one U1. |
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989 // The bytecodes for U2 should refer to U1 by a symbolic name (doesn't matter what the name is). |
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990 // The CONSTANT_Class entry for that name can be patched to refer directly to U1. |
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991 |
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992 // This allows, for example, U2 to use U1 as a superclass or super-interface, or as |
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993 // an outer class (so that U2 is an anonymous inner class of anonymous U1). |
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994 // It is not possible for a named class, or an older anonymous class, to refer by |
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995 // name (via its CP) to a newer anonymous class. |
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996 |
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997 // CP patching may also be used to modify (i.e., hack) the names of methods, classes, |
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998 // or type descriptors used in the loaded anonymous class. |
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|
999 |
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1000 // Finally, CP patching may be used to introduce "live" objects into the constant pool, |
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1001 // instead of "dead" strings. A compiled statement like println((Object)"hello") can |
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1002 // be changed to println(greeting), where greeting is an arbitrary object created before |
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1003 // the anonymous class is loaded. This is useful in dynamic languages, in which |
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1004 // various kinds of metaobjects must be introduced as constants into bytecode. |
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1005 // Note the cast (Object), which tells the verifier to expect an arbitrary object, |
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1006 // not just a literal string. For such ldc instructions, the verifier uses the |
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1007 // type Object instead of String, if the loaded constant is not in fact a String. |
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1008 |
|
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1009 static instanceKlassHandle |
|
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1010 Unsafe_DefineAnonymousClass_impl(JNIEnv *env, |
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1011 jclass host_class, jbyteArray data, jobjectArray cp_patches_jh, |
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1012 HeapWord* *temp_alloc, |
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1013 TRAPS) { |
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1014 |
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1015 if (UsePerfData) { |
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1016 ClassLoader::unsafe_defineClassCallCounter()->inc(); |
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1017 } |
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1018 |
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1019 if (data == NULL) { |
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1020 THROW_0(vmSymbols::java_lang_NullPointerException()); |
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1021 } |
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1022 |
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1023 jint length = typeArrayOop(JNIHandles::resolve_non_null(data))->length(); |
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1024 jint word_length = (length + sizeof(HeapWord)-1) / sizeof(HeapWord); |
| 6197 | 1025 HeapWord* body = NEW_C_HEAP_ARRAY(HeapWord, word_length, mtInternal); |
|
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1026 if (body == NULL) { |
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1027 THROW_0(vmSymbols::java_lang_OutOfMemoryError()); |
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1028 } |
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1029 |
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1030 // caller responsible to free it: |
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1031 (*temp_alloc) = body; |
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1032 |
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1033 { |
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1034 jbyte* array_base = typeArrayOop(JNIHandles::resolve_non_null(data))->byte_at_addr(0); |
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1035 Copy::conjoint_words((HeapWord*) array_base, body, word_length); |
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1036 } |
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1037 |
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1038 u1* class_bytes = (u1*) body; |
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1039 int class_bytes_length = (int) length; |
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1040 if (class_bytes_length < 0) class_bytes_length = 0; |
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1041 if (class_bytes == NULL |
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1042 || host_class == NULL |
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1043 || length != class_bytes_length) |
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1044 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); |
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1045 |
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1046 objArrayHandle cp_patches_h; |
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1047 if (cp_patches_jh != NULL) { |
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1048 oop p = JNIHandles::resolve_non_null(cp_patches_jh); |
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1049 if (!p->is_objArray()) |
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1050 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); |
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1051 cp_patches_h = objArrayHandle(THREAD, (objArrayOop)p); |
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1052 } |
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1053 |
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1054 KlassHandle host_klass(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(host_class))); |
|
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1055 const char* host_source = host_klass->external_name(); |
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1056 Handle host_loader(THREAD, host_klass->class_loader()); |
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1057 Handle host_domain(THREAD, host_klass->protection_domain()); |
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1058 |
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1059 GrowableArray<Handle>* cp_patches = NULL; |
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1060 if (cp_patches_h.not_null()) { |
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1061 int alen = cp_patches_h->length(); |
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1062 for (int i = alen-1; i >= 0; i--) { |
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1063 oop p = cp_patches_h->obj_at(i); |
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1064 if (p != NULL) { |
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1065 Handle patch(THREAD, p); |
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1066 if (cp_patches == NULL) |
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1067 cp_patches = new GrowableArray<Handle>(i+1, i+1, Handle()); |
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1068 cp_patches->at_put(i, patch); |
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1069 } |
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1070 } |
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1071 } |
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1072 |
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1073 ClassFileStream st(class_bytes, class_bytes_length, (char*) host_source); |
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1074 |
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1075 instanceKlassHandle anon_klass; |
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1076 { |
|
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1077 Symbol* no_class_name = NULL; |
|
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1078 Klass* anonk = SystemDictionary::parse_stream(no_class_name, |
|
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1079 host_loader, host_domain, |
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1080 &st, host_klass, cp_patches, |
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1081 CHECK_NULL); |
|
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1082 if (anonk == NULL) return NULL; |
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1083 anon_klass = instanceKlassHandle(THREAD, anonk); |
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1084 } |
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1085 |
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1086 return anon_klass; |
|
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1087 } |
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1088 |
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1089 UNSAFE_ENTRY(jclass, Unsafe_DefineAnonymousClass(JNIEnv *env, jobject unsafe, jclass host_class, jbyteArray data, jobjectArray cp_patches_jh)) |
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1090 { |
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1091 instanceKlassHandle anon_klass; |
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1092 jobject res_jh = NULL; |
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1093 |
|
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1094 UnsafeWrapper("Unsafe_DefineAnonymousClass"); |
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1095 ResourceMark rm(THREAD); |
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1096 |
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1097 HeapWord* temp_alloc = NULL; |
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1098 |
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1099 anon_klass = Unsafe_DefineAnonymousClass_impl(env, host_class, data, |
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1100 cp_patches_jh, |
|
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1101 &temp_alloc, THREAD); |
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1102 if (anon_klass() != NULL) |
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1103 res_jh = JNIHandles::make_local(env, anon_klass->java_mirror()); |
|
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1104 |
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1105 // try/finally clause: |
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1106 if (temp_alloc != NULL) { |
| 6197 | 1107 FREE_C_HEAP_ARRAY(HeapWord, temp_alloc, mtInternal); |
|
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1108 } |
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1109 |
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1110 // The anonymous class loader data has been artificially been kept alive to |
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1111 // this point. The mirror and any instances of this class have to keep |
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1112 // it alive afterwards. |
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1113 if (anon_klass() != NULL) { |
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1114 anon_klass->class_loader_data()->set_keep_alive(false); |
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1115 } |
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1116 |
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1117 // let caller initialize it as needed... |
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1118 |
|
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1119 return (jclass) res_jh; |
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1120 } |
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1121 UNSAFE_END |
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1122 |
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1123 |
| 0 | 1124 |
| 1125 UNSAFE_ENTRY(void, Unsafe_MonitorEnter(JNIEnv *env, jobject unsafe, jobject jobj)) | |
| 1126 UnsafeWrapper("Unsafe_MonitorEnter"); | |
| 1127 { | |
| 1128 if (jobj == NULL) { | |
| 1129 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1130 } | |
| 1131 Handle obj(thread, JNIHandles::resolve_non_null(jobj)); | |
| 1132 ObjectSynchronizer::jni_enter(obj, CHECK); | |
| 1133 } | |
| 1134 UNSAFE_END | |
| 1135 | |
| 1136 | |
| 1137 UNSAFE_ENTRY(jboolean, Unsafe_TryMonitorEnter(JNIEnv *env, jobject unsafe, jobject jobj)) | |
| 1138 UnsafeWrapper("Unsafe_TryMonitorEnter"); | |
| 1139 { | |
| 1140 if (jobj == NULL) { | |
| 1141 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
| 1142 } | |
| 1143 Handle obj(thread, JNIHandles::resolve_non_null(jobj)); | |
| 1144 bool res = ObjectSynchronizer::jni_try_enter(obj, CHECK_0); | |
| 1145 return (res ? JNI_TRUE : JNI_FALSE); | |
| 1146 } | |
| 1147 UNSAFE_END | |
| 1148 | |
| 1149 | |
| 1150 UNSAFE_ENTRY(void, Unsafe_MonitorExit(JNIEnv *env, jobject unsafe, jobject jobj)) | |
| 1151 UnsafeWrapper("Unsafe_MonitorExit"); | |
| 1152 { | |
| 1153 if (jobj == NULL) { | |
| 1154 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1155 } | |
| 1156 Handle obj(THREAD, JNIHandles::resolve_non_null(jobj)); | |
| 1157 ObjectSynchronizer::jni_exit(obj(), CHECK); | |
| 1158 } | |
| 1159 UNSAFE_END | |
| 1160 | |
| 1161 | |
| 1162 UNSAFE_ENTRY(void, Unsafe_ThrowException(JNIEnv *env, jobject unsafe, jthrowable thr)) | |
| 1163 UnsafeWrapper("Unsafe_ThrowException"); | |
| 1164 { | |
| 1165 ThreadToNativeFromVM ttnfv(thread); | |
| 1166 env->Throw(thr); | |
| 1167 } | |
| 1168 UNSAFE_END | |
| 1169 | |
| 1170 // JSR166 ------------------------------------------------------------------ | |
| 1171 | |
| 1172 UNSAFE_ENTRY(jboolean, Unsafe_CompareAndSwapObject(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jobject e_h, jobject x_h)) | |
| 1173 UnsafeWrapper("Unsafe_CompareAndSwapObject"); | |
| 1174 oop x = JNIHandles::resolve(x_h); | |
| 1175 oop e = JNIHandles::resolve(e_h); | |
| 1176 oop p = JNIHandles::resolve(obj); | |
|
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1177 HeapWord* addr = (HeapWord *)index_oop_from_field_offset_long(p, offset); |
|
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1178 oop res = oopDesc::atomic_compare_exchange_oop(x, addr, e, true); |
|
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1179 jboolean success = (res == e); |
| 0 | 1180 if (success) |
|
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1181 update_barrier_set((void*)addr, x); |
| 0 | 1182 return success; |
| 1183 UNSAFE_END | |
| 1184 | |
| 1185 UNSAFE_ENTRY(jboolean, Unsafe_CompareAndSwapInt(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jint e, jint x)) | |
| 1186 UnsafeWrapper("Unsafe_CompareAndSwapInt"); | |
| 1187 oop p = JNIHandles::resolve(obj); | |
| 1188 jint* addr = (jint *) index_oop_from_field_offset_long(p, offset); | |
| 1189 return (jint)(Atomic::cmpxchg(x, addr, e)) == e; | |
| 1190 UNSAFE_END | |
| 1191 | |
| 1192 UNSAFE_ENTRY(jboolean, Unsafe_CompareAndSwapLong(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jlong e, jlong x)) | |
| 1193 UnsafeWrapper("Unsafe_CompareAndSwapLong"); | |
| 1194 Handle p (THREAD, JNIHandles::resolve(obj)); | |
| 1195 jlong* addr = (jlong*)(index_oop_from_field_offset_long(p(), offset)); | |
| 1196 if (VM_Version::supports_cx8()) | |
| 1197 return (jlong)(Atomic::cmpxchg(x, addr, e)) == e; | |
| 1198 else { | |
| 1199 jboolean success = false; | |
| 1200 ObjectLocker ol(p, THREAD); | |
| 1201 if (*addr == e) { *addr = x; success = true; } | |
| 1202 return success; | |
| 1203 } | |
| 1204 UNSAFE_END | |
| 1205 | |
| 1206 UNSAFE_ENTRY(void, Unsafe_Park(JNIEnv *env, jobject unsafe, jboolean isAbsolute, jlong time)) | |
| 1207 UnsafeWrapper("Unsafe_Park"); | |
| 10405 | 1208 EventThreadPark event; |
| 4006 | 1209 #ifndef USDT2 |
|
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1210 HS_DTRACE_PROBE3(hotspot, thread__park__begin, thread->parker(), (int) isAbsolute, time); |
| 4006 | 1211 #else /* USDT2 */ |
| 1212 HOTSPOT_THREAD_PARK_BEGIN( | |
| 1213 (uintptr_t) thread->parker(), (int) isAbsolute, time); | |
| 1214 #endif /* USDT2 */ | |
| 0 | 1215 JavaThreadParkedState jtps(thread, time != 0); |
| 1216 thread->parker()->park(isAbsolute != 0, time); | |
| 4006 | 1217 #ifndef USDT2 |
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1218 HS_DTRACE_PROBE1(hotspot, thread__park__end, thread->parker()); |
| 4006 | 1219 #else /* USDT2 */ |
| 1220 HOTSPOT_THREAD_PARK_END( | |
| 1221 (uintptr_t) thread->parker()); | |
| 1222 #endif /* USDT2 */ | |
| 10405 | 1223 if (event.should_commit()) { |
| 1224 oop obj = thread->current_park_blocker(); | |
|
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1225 event.set_klass((obj != NULL) ? obj->klass() : NULL); |
| 10405 | 1226 event.set_timeout(time); |
|
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1227 event.set_address((obj != NULL) ? (TYPE_ADDRESS) cast_from_oop<uintptr_t>(obj) : 0); |
| 10405 | 1228 event.commit(); |
| 1229 } | |
| 0 | 1230 UNSAFE_END |
| 1231 | |
| 1232 UNSAFE_ENTRY(void, Unsafe_Unpark(JNIEnv *env, jobject unsafe, jobject jthread)) | |
| 1233 UnsafeWrapper("Unsafe_Unpark"); | |
| 1234 Parker* p = NULL; | |
| 1235 if (jthread != NULL) { | |
| 1236 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 1237 if (java_thread != NULL) { | |
| 1238 jlong lp = java_lang_Thread::park_event(java_thread); | |
| 1239 if (lp != 0) { | |
| 1240 // This cast is OK even though the jlong might have been read | |
| 1241 // non-atomically on 32bit systems, since there, one word will | |
| 1242 // always be zero anyway and the value set is always the same | |
| 1243 p = (Parker*)addr_from_java(lp); | |
| 1244 } else { | |
| 1245 // Grab lock if apparently null or using older version of library | |
| 1246 MutexLocker mu(Threads_lock); | |
| 1247 java_thread = JNIHandles::resolve_non_null(jthread); | |
| 1248 if (java_thread != NULL) { | |
| 1249 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 1250 if (thr != NULL) { | |
| 1251 p = thr->parker(); | |
| 1252 if (p != NULL) { // Bind to Java thread for next time. | |
| 1253 java_lang_Thread::set_park_event(java_thread, addr_to_java(p)); | |
| 1254 } | |
| 1255 } | |
| 1256 } | |
| 1257 } | |
| 1258 } | |
| 1259 } | |
| 1260 if (p != NULL) { | |
| 4006 | 1261 #ifndef USDT2 |
|
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1262 HS_DTRACE_PROBE1(hotspot, thread__unpark, p); |
| 4006 | 1263 #else /* USDT2 */ |
| 1264 HOTSPOT_THREAD_UNPARK( | |
| 1265 (uintptr_t) p); | |
| 1266 #endif /* USDT2 */ | |
| 0 | 1267 p->unpark(); |
| 1268 } | |
| 1269 UNSAFE_END | |
| 1270 | |
| 1271 UNSAFE_ENTRY(jint, Unsafe_Loadavg(JNIEnv *env, jobject unsafe, jdoubleArray loadavg, jint nelem)) | |
| 1272 UnsafeWrapper("Unsafe_Loadavg"); | |
| 1273 const int max_nelem = 3; | |
| 1274 double la[max_nelem]; | |
| 1275 jint ret; | |
| 1276 | |
| 1277 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(loadavg)); | |
| 1278 assert(a->is_typeArray(), "must be type array"); | |
| 1279 | |
| 1280 if (nelem < 0 || nelem > max_nelem || a->length() < nelem) { | |
| 1281 ThreadToNativeFromVM ttnfv(thread); | |
| 1282 throw_new(env, "ArrayIndexOutOfBoundsException"); | |
| 1283 return -1; | |
| 1284 } | |
| 1285 | |
| 1286 ret = os::loadavg(la, nelem); | |
| 1287 if (ret == -1) return -1; | |
| 1288 | |
| 1289 // if successful, ret is the number of samples actually retrieved. | |
| 1290 assert(ret >= 0 && ret <= max_nelem, "Unexpected loadavg return value"); | |
| 1291 switch(ret) { | |
| 1292 case 3: a->double_at_put(2, (jdouble)la[2]); // fall through | |
| 1293 case 2: a->double_at_put(1, (jdouble)la[1]); // fall through | |
| 1294 case 1: a->double_at_put(0, (jdouble)la[0]); break; | |
| 1295 } | |
| 1296 return ret; | |
| 1297 UNSAFE_END | |
| 1298 | |
| 1299 UNSAFE_ENTRY(void, Unsafe_PrefetchRead(JNIEnv* env, jclass ignored, jobject obj, jlong offset)) | |
| 1300 UnsafeWrapper("Unsafe_PrefetchRead"); | |
| 1301 oop p = JNIHandles::resolve(obj); | |
| 1302 void* addr = index_oop_from_field_offset_long(p, 0); | |
| 1303 Prefetch::read(addr, (intx)offset); | |
| 1304 UNSAFE_END | |
| 1305 | |
| 1306 UNSAFE_ENTRY(void, Unsafe_PrefetchWrite(JNIEnv* env, jclass ignored, jobject obj, jlong offset)) | |
| 1307 UnsafeWrapper("Unsafe_PrefetchWrite"); | |
| 1308 oop p = JNIHandles::resolve(obj); | |
| 1309 void* addr = index_oop_from_field_offset_long(p, 0); | |
| 1310 Prefetch::write(addr, (intx)offset); | |
| 1311 UNSAFE_END | |
| 1312 | |
| 1313 | |
| 1314 /// JVM_RegisterUnsafeMethods | |
| 1315 | |
| 1316 #define ADR "J" | |
| 1317 | |
| 1318 #define LANG "Ljava/lang/" | |
| 1319 | |
| 1320 #define OBJ LANG"Object;" | |
| 1321 #define CLS LANG"Class;" | |
| 1322 #define CTR LANG"reflect/Constructor;" | |
| 1323 #define FLD LANG"reflect/Field;" | |
| 1324 #define MTH LANG"reflect/Method;" | |
| 1325 #define THR LANG"Throwable;" | |
| 1326 | |
| 1327 #define DC0_Args LANG"String;[BII" | |
|
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1328 #define DC_Args DC0_Args LANG"ClassLoader;" "Ljava/security/ProtectionDomain;" |
| 0 | 1329 |
| 1330 #define CC (char*) /*cast a literal from (const char*)*/ | |
| 1331 #define FN_PTR(f) CAST_FROM_FN_PTR(void*, &f) | |
| 1332 | |
| 1333 // define deprecated accessors for compabitility with 1.4.0 | |
| 1334 #define DECLARE_GETSETOOP_140(Boolean, Z) \ | |
| 1335 {CC"get"#Boolean, CC"("OBJ"I)"#Z, FN_PTR(Unsafe_Get##Boolean##140)}, \ | |
| 1336 {CC"put"#Boolean, CC"("OBJ"I"#Z")V", FN_PTR(Unsafe_Set##Boolean##140)} | |
| 1337 | |
| 1338 // Note: In 1.4.1, getObject and kin take both int and long offsets. | |
| 1339 #define DECLARE_GETSETOOP_141(Boolean, Z) \ | |
| 1340 {CC"get"#Boolean, CC"("OBJ"J)"#Z, FN_PTR(Unsafe_Get##Boolean)}, \ | |
| 1341 {CC"put"#Boolean, CC"("OBJ"J"#Z")V", FN_PTR(Unsafe_Set##Boolean)} | |
| 1342 | |
| 1343 // Note: In 1.5.0, there are volatile versions too | |
| 1344 #define DECLARE_GETSETOOP(Boolean, Z) \ | |
| 1345 {CC"get"#Boolean, CC"("OBJ"J)"#Z, FN_PTR(Unsafe_Get##Boolean)}, \ | |
| 1346 {CC"put"#Boolean, CC"("OBJ"J"#Z")V", FN_PTR(Unsafe_Set##Boolean)}, \ | |
| 1347 {CC"get"#Boolean"Volatile", CC"("OBJ"J)"#Z, FN_PTR(Unsafe_Get##Boolean##Volatile)}, \ | |
| 1348 {CC"put"#Boolean"Volatile", CC"("OBJ"J"#Z")V", FN_PTR(Unsafe_Set##Boolean##Volatile)} | |
| 1349 | |
| 1350 | |
| 1351 #define DECLARE_GETSETNATIVE(Byte, B) \ | |
| 1352 {CC"get"#Byte, CC"("ADR")"#B, FN_PTR(Unsafe_GetNative##Byte)}, \ | |
| 1353 {CC"put"#Byte, CC"("ADR#B")V", FN_PTR(Unsafe_SetNative##Byte)} | |
| 1354 | |
| 1355 | |
| 1356 | |
|
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1357 // These are the methods for 1.4.0 |
| 0 | 1358 static JNINativeMethod methods_140[] = { |
| 1359 {CC"getObject", CC"("OBJ"I)"OBJ"", FN_PTR(Unsafe_GetObject140)}, | |
| 1360 {CC"putObject", CC"("OBJ"I"OBJ")V", FN_PTR(Unsafe_SetObject140)}, | |
| 1361 | |
| 1362 DECLARE_GETSETOOP_140(Boolean, Z), | |
| 1363 DECLARE_GETSETOOP_140(Byte, B), | |
| 1364 DECLARE_GETSETOOP_140(Short, S), | |
| 1365 DECLARE_GETSETOOP_140(Char, C), | |
| 1366 DECLARE_GETSETOOP_140(Int, I), | |
| 1367 DECLARE_GETSETOOP_140(Long, J), | |
| 1368 DECLARE_GETSETOOP_140(Float, F), | |
| 1369 DECLARE_GETSETOOP_140(Double, D), | |
| 1370 | |
| 1371 DECLARE_GETSETNATIVE(Byte, B), | |
| 1372 DECLARE_GETSETNATIVE(Short, S), | |
| 1373 DECLARE_GETSETNATIVE(Char, C), | |
| 1374 DECLARE_GETSETNATIVE(Int, I), | |
| 1375 DECLARE_GETSETNATIVE(Long, J), | |
| 1376 DECLARE_GETSETNATIVE(Float, F), | |
| 1377 DECLARE_GETSETNATIVE(Double, D), | |
| 1378 | |
| 1379 {CC"getAddress", CC"("ADR")"ADR, FN_PTR(Unsafe_GetNativeAddress)}, | |
| 1380 {CC"putAddress", CC"("ADR""ADR")V", FN_PTR(Unsafe_SetNativeAddress)}, | |
| 1381 | |
| 1382 {CC"allocateMemory", CC"(J)"ADR, FN_PTR(Unsafe_AllocateMemory)}, | |
| 1383 {CC"reallocateMemory", CC"("ADR"J)"ADR, FN_PTR(Unsafe_ReallocateMemory)}, | |
| 1384 {CC"freeMemory", CC"("ADR")V", FN_PTR(Unsafe_FreeMemory)}, | |
| 1385 | |
|
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1386 {CC"fieldOffset", CC"("FLD")I", FN_PTR(Unsafe_FieldOffset)}, |
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1387 {CC"staticFieldBase", CC"("CLS")"OBJ, FN_PTR(Unsafe_StaticFieldBaseFromClass)}, |
| 0 | 1388 {CC"ensureClassInitialized",CC"("CLS")V", FN_PTR(Unsafe_EnsureClassInitialized)}, |
| 1389 {CC"arrayBaseOffset", CC"("CLS")I", FN_PTR(Unsafe_ArrayBaseOffset)}, | |
| 1390 {CC"arrayIndexScale", CC"("CLS")I", FN_PTR(Unsafe_ArrayIndexScale)}, | |
| 1391 {CC"addressSize", CC"()I", FN_PTR(Unsafe_AddressSize)}, | |
| 1392 {CC"pageSize", CC"()I", FN_PTR(Unsafe_PageSize)}, | |
| 1393 | |
| 1394 {CC"defineClass", CC"("DC0_Args")"CLS, FN_PTR(Unsafe_DefineClass0)}, | |
|
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1395 {CC"defineClass", CC"("DC_Args")"CLS, FN_PTR(Unsafe_DefineClass)}, |
| 0 | 1396 {CC"allocateInstance", CC"("CLS")"OBJ, FN_PTR(Unsafe_AllocateInstance)}, |
| 1397 {CC"monitorEnter", CC"("OBJ")V", FN_PTR(Unsafe_MonitorEnter)}, | |
| 1398 {CC"monitorExit", CC"("OBJ")V", FN_PTR(Unsafe_MonitorExit)}, | |
| 1399 {CC"throwException", CC"("THR")V", FN_PTR(Unsafe_ThrowException)} | |
| 1400 }; | |
| 1401 | |
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1402 // These are the methods prior to the JSR 166 changes in 1.5.0 |
| 0 | 1403 static JNINativeMethod methods_141[] = { |
| 1404 {CC"getObject", CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObject)}, | |
| 1405 {CC"putObject", CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObject)}, | |
| 1406 | |
| 1407 DECLARE_GETSETOOP_141(Boolean, Z), | |
| 1408 DECLARE_GETSETOOP_141(Byte, B), | |
| 1409 DECLARE_GETSETOOP_141(Short, S), | |
| 1410 DECLARE_GETSETOOP_141(Char, C), | |
| 1411 DECLARE_GETSETOOP_141(Int, I), | |
| 1412 DECLARE_GETSETOOP_141(Long, J), | |
| 1413 DECLARE_GETSETOOP_141(Float, F), | |
| 1414 DECLARE_GETSETOOP_141(Double, D), | |
| 1415 | |
| 1416 DECLARE_GETSETNATIVE(Byte, B), | |
| 1417 DECLARE_GETSETNATIVE(Short, S), | |
| 1418 DECLARE_GETSETNATIVE(Char, C), | |
| 1419 DECLARE_GETSETNATIVE(Int, I), | |
| 1420 DECLARE_GETSETNATIVE(Long, J), | |
| 1421 DECLARE_GETSETNATIVE(Float, F), | |
| 1422 DECLARE_GETSETNATIVE(Double, D), | |
| 1423 | |
| 1424 {CC"getAddress", CC"("ADR")"ADR, FN_PTR(Unsafe_GetNativeAddress)}, | |
| 1425 {CC"putAddress", CC"("ADR""ADR")V", FN_PTR(Unsafe_SetNativeAddress)}, | |
| 1426 | |
| 1427 {CC"allocateMemory", CC"(J)"ADR, FN_PTR(Unsafe_AllocateMemory)}, | |
| 1428 {CC"reallocateMemory", CC"("ADR"J)"ADR, FN_PTR(Unsafe_ReallocateMemory)}, | |
| 1429 {CC"freeMemory", CC"("ADR")V", FN_PTR(Unsafe_FreeMemory)}, | |
| 1430 | |
| 1431 {CC"objectFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_ObjectFieldOffset)}, | |
| 1432 {CC"staticFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_StaticFieldOffset)}, | |
| 1433 {CC"staticFieldBase", CC"("FLD")"OBJ, FN_PTR(Unsafe_StaticFieldBaseFromField)}, | |
| 1434 {CC"ensureClassInitialized",CC"("CLS")V", FN_PTR(Unsafe_EnsureClassInitialized)}, | |
| 1435 {CC"arrayBaseOffset", CC"("CLS")I", FN_PTR(Unsafe_ArrayBaseOffset)}, | |
| 1436 {CC"arrayIndexScale", CC"("CLS")I", FN_PTR(Unsafe_ArrayIndexScale)}, | |
| 1437 {CC"addressSize", CC"()I", FN_PTR(Unsafe_AddressSize)}, | |
| 1438 {CC"pageSize", CC"()I", FN_PTR(Unsafe_PageSize)}, | |
| 1439 | |
| 1440 {CC"defineClass", CC"("DC0_Args")"CLS, FN_PTR(Unsafe_DefineClass0)}, | |
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1441 {CC"defineClass", CC"("DC_Args")"CLS, FN_PTR(Unsafe_DefineClass)}, |
| 0 | 1442 {CC"allocateInstance", CC"("CLS")"OBJ, FN_PTR(Unsafe_AllocateInstance)}, |
| 1443 {CC"monitorEnter", CC"("OBJ")V", FN_PTR(Unsafe_MonitorEnter)}, | |
| 1444 {CC"monitorExit", CC"("OBJ")V", FN_PTR(Unsafe_MonitorExit)}, | |
| 1445 {CC"throwException", CC"("THR")V", FN_PTR(Unsafe_ThrowException)} | |
| 1446 | |
| 1447 }; | |
| 1448 | |
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1449 // These are the methods prior to the JSR 166 changes in 1.6.0 |
| 0 | 1450 static JNINativeMethod methods_15[] = { |
| 1451 {CC"getObject", CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObject)}, | |
| 1452 {CC"putObject", CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObject)}, | |
| 1453 {CC"getObjectVolatile",CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObjectVolatile)}, | |
| 1454 {CC"putObjectVolatile",CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObjectVolatile)}, | |
| 1455 | |
| 1456 | |
| 1457 DECLARE_GETSETOOP(Boolean, Z), | |
| 1458 DECLARE_GETSETOOP(Byte, B), | |
| 1459 DECLARE_GETSETOOP(Short, S), | |
| 1460 DECLARE_GETSETOOP(Char, C), | |
| 1461 DECLARE_GETSETOOP(Int, I), | |
| 1462 DECLARE_GETSETOOP(Long, J), | |
| 1463 DECLARE_GETSETOOP(Float, F), | |
| 1464 DECLARE_GETSETOOP(Double, D), | |
| 1465 | |
| 1466 DECLARE_GETSETNATIVE(Byte, B), | |
| 1467 DECLARE_GETSETNATIVE(Short, S), | |
| 1468 DECLARE_GETSETNATIVE(Char, C), | |
| 1469 DECLARE_GETSETNATIVE(Int, I), | |
| 1470 DECLARE_GETSETNATIVE(Long, J), | |
| 1471 DECLARE_GETSETNATIVE(Float, F), | |
| 1472 DECLARE_GETSETNATIVE(Double, D), | |
| 1473 | |
| 1474 {CC"getAddress", CC"("ADR")"ADR, FN_PTR(Unsafe_GetNativeAddress)}, | |
| 1475 {CC"putAddress", CC"("ADR""ADR")V", FN_PTR(Unsafe_SetNativeAddress)}, | |
| 1476 | |
| 1477 {CC"allocateMemory", CC"(J)"ADR, FN_PTR(Unsafe_AllocateMemory)}, | |
| 1478 {CC"reallocateMemory", CC"("ADR"J)"ADR, FN_PTR(Unsafe_ReallocateMemory)}, | |
| 1479 {CC"freeMemory", CC"("ADR")V", FN_PTR(Unsafe_FreeMemory)}, | |
| 1480 | |
| 1481 {CC"objectFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_ObjectFieldOffset)}, | |
| 1482 {CC"staticFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_StaticFieldOffset)}, | |
| 1483 {CC"staticFieldBase", CC"("FLD")"OBJ, FN_PTR(Unsafe_StaticFieldBaseFromField)}, | |
| 1484 {CC"ensureClassInitialized",CC"("CLS")V", FN_PTR(Unsafe_EnsureClassInitialized)}, | |
| 1485 {CC"arrayBaseOffset", CC"("CLS")I", FN_PTR(Unsafe_ArrayBaseOffset)}, | |
| 1486 {CC"arrayIndexScale", CC"("CLS")I", FN_PTR(Unsafe_ArrayIndexScale)}, | |
| 1487 {CC"addressSize", CC"()I", FN_PTR(Unsafe_AddressSize)}, | |
| 1488 {CC"pageSize", CC"()I", FN_PTR(Unsafe_PageSize)}, | |
| 1489 | |
| 1490 {CC"defineClass", CC"("DC0_Args")"CLS, FN_PTR(Unsafe_DefineClass0)}, | |
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1491 {CC"defineClass", CC"("DC_Args")"CLS, FN_PTR(Unsafe_DefineClass)}, |
| 0 | 1492 {CC"allocateInstance", CC"("CLS")"OBJ, FN_PTR(Unsafe_AllocateInstance)}, |
| 1493 {CC"monitorEnter", CC"("OBJ")V", FN_PTR(Unsafe_MonitorEnter)}, | |
| 1494 {CC"monitorExit", CC"("OBJ")V", FN_PTR(Unsafe_MonitorExit)}, | |
| 1495 {CC"throwException", CC"("THR")V", FN_PTR(Unsafe_ThrowException)}, | |
| 1496 {CC"compareAndSwapObject", CC"("OBJ"J"OBJ""OBJ")Z", FN_PTR(Unsafe_CompareAndSwapObject)}, | |
| 1497 {CC"compareAndSwapInt", CC"("OBJ"J""I""I"")Z", FN_PTR(Unsafe_CompareAndSwapInt)}, | |
| 1498 {CC"compareAndSwapLong", CC"("OBJ"J""J""J"")Z", FN_PTR(Unsafe_CompareAndSwapLong)}, | |
| 1499 {CC"park", CC"(ZJ)V", FN_PTR(Unsafe_Park)}, | |
| 1500 {CC"unpark", CC"("OBJ")V", FN_PTR(Unsafe_Unpark)} | |
| 1501 | |
| 1502 }; | |
| 1503 | |
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1504 // These are the methods for 1.6.0 and 1.7.0 |
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1505 static JNINativeMethod methods_16[] = { |
| 0 | 1506 {CC"getObject", CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObject)}, |
| 1507 {CC"putObject", CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObject)}, | |
| 1508 {CC"getObjectVolatile",CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObjectVolatile)}, | |
| 1509 {CC"putObjectVolatile",CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObjectVolatile)}, | |
| 1510 | |
|
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1511 DECLARE_GETSETOOP(Boolean, Z), |
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1512 DECLARE_GETSETOOP(Byte, B), |
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1513 DECLARE_GETSETOOP(Short, S), |
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1514 DECLARE_GETSETOOP(Char, C), |
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1515 DECLARE_GETSETOOP(Int, I), |
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1516 DECLARE_GETSETOOP(Long, J), |
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1517 DECLARE_GETSETOOP(Float, F), |
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1518 DECLARE_GETSETOOP(Double, D), |
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1519 |
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1520 DECLARE_GETSETNATIVE(Byte, B), |
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1521 DECLARE_GETSETNATIVE(Short, S), |
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1522 DECLARE_GETSETNATIVE(Char, C), |
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1523 DECLARE_GETSETNATIVE(Int, I), |
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1524 DECLARE_GETSETNATIVE(Long, J), |
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1525 DECLARE_GETSETNATIVE(Float, F), |
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1526 DECLARE_GETSETNATIVE(Double, D), |
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1527 |
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1528 {CC"getAddress", CC"("ADR")"ADR, FN_PTR(Unsafe_GetNativeAddress)}, |
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1529 {CC"putAddress", CC"("ADR""ADR")V", FN_PTR(Unsafe_SetNativeAddress)}, |
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1530 |
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1531 {CC"allocateMemory", CC"(J)"ADR, FN_PTR(Unsafe_AllocateMemory)}, |
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1532 {CC"reallocateMemory", CC"("ADR"J)"ADR, FN_PTR(Unsafe_ReallocateMemory)}, |
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1533 {CC"freeMemory", CC"("ADR")V", FN_PTR(Unsafe_FreeMemory)}, |
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1534 |
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1535 {CC"objectFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_ObjectFieldOffset)}, |
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1536 {CC"staticFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_StaticFieldOffset)}, |
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1537 {CC"staticFieldBase", CC"("FLD")"OBJ, FN_PTR(Unsafe_StaticFieldBaseFromField)}, |
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1538 {CC"ensureClassInitialized",CC"("CLS")V", FN_PTR(Unsafe_EnsureClassInitialized)}, |
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1539 {CC"arrayBaseOffset", CC"("CLS")I", FN_PTR(Unsafe_ArrayBaseOffset)}, |
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1540 {CC"arrayIndexScale", CC"("CLS")I", FN_PTR(Unsafe_ArrayIndexScale)}, |
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1541 {CC"addressSize", CC"()I", FN_PTR(Unsafe_AddressSize)}, |
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1542 {CC"pageSize", CC"()I", FN_PTR(Unsafe_PageSize)}, |
|
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1543 |
|
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1544 {CC"defineClass", CC"("DC0_Args")"CLS, FN_PTR(Unsafe_DefineClass0)}, |
|
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1545 {CC"defineClass", CC"("DC_Args")"CLS, FN_PTR(Unsafe_DefineClass)}, |
|
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1546 {CC"allocateInstance", CC"("CLS")"OBJ, FN_PTR(Unsafe_AllocateInstance)}, |
|
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1547 {CC"monitorEnter", CC"("OBJ")V", FN_PTR(Unsafe_MonitorEnter)}, |
|
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1548 {CC"monitorExit", CC"("OBJ")V", FN_PTR(Unsafe_MonitorExit)}, |
|
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1549 {CC"tryMonitorEnter", CC"("OBJ")Z", FN_PTR(Unsafe_TryMonitorEnter)}, |
|
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1550 {CC"throwException", CC"("THR")V", FN_PTR(Unsafe_ThrowException)}, |
|
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1551 {CC"compareAndSwapObject", CC"("OBJ"J"OBJ""OBJ")Z", FN_PTR(Unsafe_CompareAndSwapObject)}, |
|
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1552 {CC"compareAndSwapInt", CC"("OBJ"J""I""I"")Z", FN_PTR(Unsafe_CompareAndSwapInt)}, |
|
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1553 {CC"compareAndSwapLong", CC"("OBJ"J""J""J"")Z", FN_PTR(Unsafe_CompareAndSwapLong)}, |
|
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1554 {CC"putOrderedObject", CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetOrderedObject)}, |
|
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1555 {CC"putOrderedInt", CC"("OBJ"JI)V", FN_PTR(Unsafe_SetOrderedInt)}, |
|
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1556 {CC"putOrderedLong", CC"("OBJ"JJ)V", FN_PTR(Unsafe_SetOrderedLong)}, |
|
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1557 {CC"park", CC"(ZJ)V", FN_PTR(Unsafe_Park)}, |
|
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1558 {CC"unpark", CC"("OBJ")V", FN_PTR(Unsafe_Unpark)} |
|
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1559 }; |
|
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1560 |
|
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1561 // These are the methods for 1.8.0 |
|
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1562 static JNINativeMethod methods_18[] = { |
|
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1563 {CC"getObject", CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObject)}, |
|
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1564 {CC"putObject", CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObject)}, |
|
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1565 {CC"getObjectVolatile",CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObjectVolatile)}, |
|
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1566 {CC"putObjectVolatile",CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObjectVolatile)}, |
| 0 | 1567 |
| 1568 DECLARE_GETSETOOP(Boolean, Z), | |
| 1569 DECLARE_GETSETOOP(Byte, B), | |
| 1570 DECLARE_GETSETOOP(Short, S), | |
| 1571 DECLARE_GETSETOOP(Char, C), | |
| 1572 DECLARE_GETSETOOP(Int, I), | |
| 1573 DECLARE_GETSETOOP(Long, J), | |
| 1574 DECLARE_GETSETOOP(Float, F), | |
| 1575 DECLARE_GETSETOOP(Double, D), | |
| 1576 | |
| 1577 DECLARE_GETSETNATIVE(Byte, B), | |
| 1578 DECLARE_GETSETNATIVE(Short, S), | |
| 1579 DECLARE_GETSETNATIVE(Char, C), | |
| 1580 DECLARE_GETSETNATIVE(Int, I), | |
| 1581 DECLARE_GETSETNATIVE(Long, J), | |
| 1582 DECLARE_GETSETNATIVE(Float, F), | |
| 1583 DECLARE_GETSETNATIVE(Double, D), | |
| 1584 | |
| 1585 {CC"getAddress", CC"("ADR")"ADR, FN_PTR(Unsafe_GetNativeAddress)}, | |
| 1586 {CC"putAddress", CC"("ADR""ADR")V", FN_PTR(Unsafe_SetNativeAddress)}, | |
| 1587 | |
| 1588 {CC"allocateMemory", CC"(J)"ADR, FN_PTR(Unsafe_AllocateMemory)}, | |
| 1589 {CC"reallocateMemory", CC"("ADR"J)"ADR, FN_PTR(Unsafe_ReallocateMemory)}, | |
| 1590 {CC"freeMemory", CC"("ADR")V", FN_PTR(Unsafe_FreeMemory)}, | |
| 1591 | |
| 1592 {CC"objectFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_ObjectFieldOffset)}, | |
| 1593 {CC"staticFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_StaticFieldOffset)}, | |
| 1594 {CC"staticFieldBase", CC"("FLD")"OBJ, FN_PTR(Unsafe_StaticFieldBaseFromField)}, | |
| 1595 {CC"ensureClassInitialized",CC"("CLS")V", FN_PTR(Unsafe_EnsureClassInitialized)}, | |
| 1596 {CC"arrayBaseOffset", CC"("CLS")I", FN_PTR(Unsafe_ArrayBaseOffset)}, | |
| 1597 {CC"arrayIndexScale", CC"("CLS")I", FN_PTR(Unsafe_ArrayIndexScale)}, | |
| 1598 {CC"addressSize", CC"()I", FN_PTR(Unsafe_AddressSize)}, | |
| 1599 {CC"pageSize", CC"()I", FN_PTR(Unsafe_PageSize)}, | |
| 1600 | |
|
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1601 {CC"defineClass", CC"("DC_Args")"CLS, FN_PTR(Unsafe_DefineClass)}, |
| 0 | 1602 {CC"allocateInstance", CC"("CLS")"OBJ, FN_PTR(Unsafe_AllocateInstance)}, |
| 1603 {CC"monitorEnter", CC"("OBJ")V", FN_PTR(Unsafe_MonitorEnter)}, | |
| 1604 {CC"monitorExit", CC"("OBJ")V", FN_PTR(Unsafe_MonitorExit)}, | |
| 1605 {CC"tryMonitorEnter", CC"("OBJ")Z", FN_PTR(Unsafe_TryMonitorEnter)}, | |
| 1606 {CC"throwException", CC"("THR")V", FN_PTR(Unsafe_ThrowException)}, | |
| 1607 {CC"compareAndSwapObject", CC"("OBJ"J"OBJ""OBJ")Z", FN_PTR(Unsafe_CompareAndSwapObject)}, | |
| 1608 {CC"compareAndSwapInt", CC"("OBJ"J""I""I"")Z", FN_PTR(Unsafe_CompareAndSwapInt)}, | |
| 1609 {CC"compareAndSwapLong", CC"("OBJ"J""J""J"")Z", FN_PTR(Unsafe_CompareAndSwapLong)}, | |
| 1610 {CC"putOrderedObject", CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetOrderedObject)}, | |
| 1611 {CC"putOrderedInt", CC"("OBJ"JI)V", FN_PTR(Unsafe_SetOrderedInt)}, | |
| 1612 {CC"putOrderedLong", CC"("OBJ"JJ)V", FN_PTR(Unsafe_SetOrderedLong)}, | |
| 1613 {CC"park", CC"(ZJ)V", FN_PTR(Unsafe_Park)}, | |
| 1614 {CC"unpark", CC"("OBJ")V", FN_PTR(Unsafe_Unpark)} | |
| 1615 }; | |
| 1616 | |
| 1617 JNINativeMethod loadavg_method[] = { | |
|
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1618 {CC"getLoadAverage", CC"([DI)I", FN_PTR(Unsafe_Loadavg)} |
| 0 | 1619 }; |
| 1620 | |
| 1621 JNINativeMethod prefetch_methods[] = { | |
| 1622 {CC"prefetchRead", CC"("OBJ"J)V", FN_PTR(Unsafe_PrefetchRead)}, | |
| 1623 {CC"prefetchWrite", CC"("OBJ"J)V", FN_PTR(Unsafe_PrefetchWrite)}, | |
| 1624 {CC"prefetchReadStatic", CC"("OBJ"J)V", FN_PTR(Unsafe_PrefetchRead)}, | |
| 1625 {CC"prefetchWriteStatic",CC"("OBJ"J)V", FN_PTR(Unsafe_PrefetchWrite)} | |
| 1626 }; | |
| 1627 | |
|
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1628 JNINativeMethod memcopy_methods_17[] = { |
| 0 | 1629 {CC"copyMemory", CC"("OBJ"J"OBJ"JJ)V", FN_PTR(Unsafe_CopyMemory2)}, |
| 1630 {CC"setMemory", CC"("OBJ"JJB)V", FN_PTR(Unsafe_SetMemory2)} | |
| 1631 }; | |
| 1632 | |
| 1633 JNINativeMethod memcopy_methods_15[] = { | |
| 1634 {CC"setMemory", CC"("ADR"JB)V", FN_PTR(Unsafe_SetMemory)}, | |
| 1635 {CC"copyMemory", CC"("ADR ADR"J)V", FN_PTR(Unsafe_CopyMemory)} | |
| 1636 }; | |
| 1637 | |
|
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1638 JNINativeMethod anonk_methods[] = { |
|
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1639 {CC"defineAnonymousClass", CC"("DAC_Args")"CLS, FN_PTR(Unsafe_DefineAnonymousClass)}, |
|
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1640 }; |
| 0 | 1641 |
|
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1642 JNINativeMethod lform_methods[] = { |
|
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1643 {CC"shouldBeInitialized",CC"("CLS")Z", FN_PTR(Unsafe_ShouldBeInitialized)}, |
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1644 }; |
|
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1645 |
|
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1646 JNINativeMethod fence_methods[] = { |
|
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1647 {CC"loadFence", CC"()V", FN_PTR(Unsafe_LoadFence)}, |
|
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1648 {CC"storeFence", CC"()V", FN_PTR(Unsafe_StoreFence)}, |
|
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1649 {CC"fullFence", CC"()V", FN_PTR(Unsafe_FullFence)}, |
|
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1650 }; |
|
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|
1651 |
| 0 | 1652 #undef CC |
| 1653 #undef FN_PTR | |
| 1654 | |
| 1655 #undef ADR | |
| 1656 #undef LANG | |
| 1657 #undef OBJ | |
| 1658 #undef CLS | |
| 1659 #undef CTR | |
| 1660 #undef FLD | |
| 1661 #undef MTH | |
| 1662 #undef THR | |
| 1663 #undef DC0_Args | |
|
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1664 #undef DC_Args |
| 0 | 1665 |
| 1666 #undef DECLARE_GETSETOOP | |
| 1667 #undef DECLARE_GETSETNATIVE | |
| 1668 | |
| 1669 | |
|
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|
1670 /** |
|
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1671 * Helper method to register native methods. |
|
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1672 */ |
|
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1673 static bool register_natives(const char* message, JNIEnv* env, jclass clazz, const JNINativeMethod* methods, jint nMethods) { |
|
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1674 int status = env->RegisterNatives(clazz, methods, nMethods); |
|
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1675 if (status < 0 || env->ExceptionOccurred()) { |
|
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1676 if (PrintMiscellaneous && (Verbose || WizardMode)) { |
|
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1677 tty->print_cr("Unsafe: failed registering %s", message); |
|
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|
1678 } |
|
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|
1679 env->ExceptionClear(); |
|
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|
1680 return false; |
|
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|
1681 } else { |
|
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|
1682 if (PrintMiscellaneous && (Verbose || WizardMode)) { |
|
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1683 tty->print_cr("Unsafe: successfully registered %s", message); |
|
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|
1684 } |
|
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|
1685 return true; |
|
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|
1686 } |
|
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|
1687 } |
|
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|
1688 |
|
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1689 |
| 0 | 1690 // This one function is exported, used by NativeLookup. |
| 1691 // The Unsafe_xxx functions above are called only from the interpreter. | |
| 1692 // The optimizer looks at names and signatures to recognize | |
| 1693 // individual functions. | |
| 1694 | |
| 1695 JVM_ENTRY(void, JVM_RegisterUnsafeMethods(JNIEnv *env, jclass unsafecls)) | |
| 1696 UnsafeWrapper("JVM_RegisterUnsafeMethods"); | |
| 1697 { | |
| 1698 ThreadToNativeFromVM ttnfv(thread); | |
|
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1699 |
|
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1700 // Unsafe methods |
| 0 | 1701 { |
|
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1702 bool success = false; |
|
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1703 // We need to register the 1.6 methods first because the 1.8 methods would register fine on 1.7 and 1.6 |
|
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1704 if (!success) { |
|
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1705 success = register_natives("1.6 methods", env, unsafecls, methods_16, sizeof(methods_16)/sizeof(JNINativeMethod)); |
|
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1706 } |
|
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1707 if (!success) { |
|
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1708 success = register_natives("1.8 methods", env, unsafecls, methods_18, sizeof(methods_18)/sizeof(JNINativeMethod)); |
|
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1709 } |
|
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1710 if (!success) { |
|
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1711 success = register_natives("1.5 methods", env, unsafecls, methods_15, sizeof(methods_15)/sizeof(JNINativeMethod)); |
|
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1712 } |
|
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1713 if (!success) { |
|
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1714 success = register_natives("1.4.1 methods", env, unsafecls, methods_141, sizeof(methods_141)/sizeof(JNINativeMethod)); |
| 0 | 1715 } |
|
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1716 if (!success) { |
|
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1717 success = register_natives("1.4.0 methods", env, unsafecls, methods_140, sizeof(methods_140)/sizeof(JNINativeMethod)); |
|
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1718 } |
|
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1719 guarantee(success, "register unsafe natives"); |
| 0 | 1720 } |
|
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1721 |
|
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1722 // Unsafe.getLoadAverage |
|
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1723 register_natives("1.6 loadavg method", env, unsafecls, loadavg_method, sizeof(loadavg_method)/sizeof(JNINativeMethod)); |
|
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1724 |
|
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1725 // Prefetch methods |
|
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1726 register_natives("1.6 prefetch methods", env, unsafecls, prefetch_methods, sizeof(prefetch_methods)/sizeof(JNINativeMethod)); |
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1727 |
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1728 // Memory copy methods |
| 0 | 1729 { |
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1730 bool success = false; |
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1731 if (!success) { |
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1732 success = register_natives("1.7 memory copy methods", env, unsafecls, memcopy_methods_17, sizeof(memcopy_methods_17)/sizeof(JNINativeMethod)); |
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1733 } |
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1734 if (!success) { |
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1735 success = register_natives("1.5 memory copy methods", env, unsafecls, memcopy_methods_15, sizeof(memcopy_methods_15)/sizeof(JNINativeMethod)); |
| 0 | 1736 } |
| 1737 } | |
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1738 |
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1739 // Unsafe.defineAnonymousClass |
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1740 if (EnableInvokeDynamic) { |
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1741 register_natives("1.7 define anonymous class method", env, unsafecls, anonk_methods, sizeof(anonk_methods)/sizeof(JNINativeMethod)); |
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1742 } |
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1743 |
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1744 // Unsafe.shouldBeInitialized |
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1745 if (EnableInvokeDynamic) { |
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1746 register_natives("1.7 LambdaForm support", env, unsafecls, lform_methods, sizeof(lform_methods)/sizeof(JNINativeMethod)); |
| 0 | 1747 } |
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1748 |
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1749 // Fence methods |
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1750 register_natives("1.8 fence methods", env, unsafecls, fence_methods, sizeof(fence_methods)/sizeof(JNINativeMethod)); |
| 0 | 1751 } |
| 1752 JVM_END |