Mercurial > hg > truffle
annotate src/share/vm/prims/unsafe.cpp @ 20197:ce8f6bb717c9
8042195: Introduce umbrella header orderAccess.inline.hpp.
Reviewed-by: dholmes, kvn, stefank, twisti
| author | goetz |
|---|---|
| date | Tue, 29 Apr 2014 15:17:27 +0200 |
| parents | 78bbf4d43a14 |
| children | c49dcaf78a65 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2000, 2014, 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" | |
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36 #include "runtime/orderAccess.inline.hpp" |
| 1972 | 37 #include "runtime/reflection.hpp" |
| 38 #include "runtime/synchronizer.hpp" | |
| 39 #include "services/threadService.hpp" | |
| 10405 | 40 #include "trace/tracing.hpp" |
| 1972 | 41 #include "utilities/copy.hpp" |
| 42 #include "utilities/dtrace.hpp" | |
| 43 | |
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44 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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45 |
| 0 | 46 /* |
| 47 * Implementation of class sun.misc.Unsafe | |
| 48 */ | |
| 49 | |
| 4006 | 50 #ifndef USDT2 |
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51 HS_DTRACE_PROBE_DECL3(hotspot, thread__park__begin, uintptr_t, int, long long); |
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52 HS_DTRACE_PROBE_DECL1(hotspot, thread__park__end, uintptr_t); |
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53 HS_DTRACE_PROBE_DECL1(hotspot, thread__unpark, uintptr_t); |
| 4006 | 54 #endif /* !USDT2 */ |
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55 |
| 0 | 56 #define MAX_OBJECT_SIZE \ |
| 57 ( arrayOopDesc::header_size(T_DOUBLE) * HeapWordSize \ | |
| 58 + ((julong)max_jint * sizeof(double)) ) | |
| 59 | |
| 60 | |
| 61 #define UNSAFE_ENTRY(result_type, header) \ | |
| 62 JVM_ENTRY(result_type, header) | |
| 63 | |
| 64 // Can't use UNSAFE_LEAF because it has the signature of a straight | |
| 65 // call into the runtime (just like JVM_LEAF, funny that) but it's | |
| 66 // called like a Java Native and thus the wrapper built for it passes | |
| 67 // arguments like a JNI call. It expects those arguments to be popped | |
| 68 // from the stack on Intel like all good JNI args are, and adjusts the | |
| 69 // stack according. Since the JVM_LEAF call expects no extra | |
| 70 // arguments the stack isn't popped in the C code, is pushed by the | |
| 71 // wrapper and we get sick. | |
| 72 //#define UNSAFE_LEAF(result_type, header) \ | |
| 73 // JVM_LEAF(result_type, header) | |
| 74 | |
| 75 #define UNSAFE_END JVM_END | |
| 76 | |
| 77 #define UnsafeWrapper(arg) /*nothing, for the present*/ | |
| 78 | |
| 79 | |
| 80 inline void* addr_from_java(jlong addr) { | |
| 81 // This assert fails in a variety of ways on 32-bit systems. | |
| 82 // It is impossible to predict whether native code that converts | |
| 83 // pointers to longs will sign-extend or zero-extend the addresses. | |
| 84 //assert(addr == (uintptr_t)addr, "must not be odd high bits"); | |
| 85 return (void*)(uintptr_t)addr; | |
| 86 } | |
| 87 | |
| 88 inline jlong addr_to_java(void* p) { | |
| 89 assert(p == (void*)(uintptr_t)p, "must not be odd high bits"); | |
| 90 return (uintptr_t)p; | |
| 91 } | |
| 92 | |
| 93 | |
| 94 // Note: The VM's obj_field and related accessors use byte-scaled | |
| 95 // ("unscaled") offsets, just as the unsafe methods do. | |
| 96 | |
| 97 // However, the method Unsafe.fieldOffset explicitly declines to | |
| 98 // guarantee this. The field offset values manipulated by the Java user | |
| 99 // through the Unsafe API are opaque cookies that just happen to be byte | |
| 100 // offsets. We represent this state of affairs by passing the cookies | |
| 101 // through conversion functions when going between the VM and the Unsafe API. | |
| 102 // The conversion functions just happen to be no-ops at present. | |
| 103 | |
| 104 inline jlong field_offset_to_byte_offset(jlong field_offset) { | |
| 105 return field_offset; | |
| 106 } | |
| 107 | |
| 108 inline jlong field_offset_from_byte_offset(jlong byte_offset) { | |
| 109 return byte_offset; | |
| 110 } | |
| 111 | |
| 112 inline jint invocation_key_from_method_slot(jint slot) { | |
| 113 return slot; | |
| 114 } | |
| 115 | |
| 116 inline jint invocation_key_to_method_slot(jint key) { | |
| 117 return key; | |
| 118 } | |
| 119 | |
| 120 inline void* index_oop_from_field_offset_long(oop p, jlong field_offset) { | |
| 121 jlong byte_offset = field_offset_to_byte_offset(field_offset); | |
| 122 #ifdef ASSERT | |
| 123 if (p != NULL) { | |
| 124 assert(byte_offset >= 0 && byte_offset <= (jlong)MAX_OBJECT_SIZE, "sane offset"); | |
| 125 if (byte_offset == (jint)byte_offset) { | |
| 126 void* ptr_plus_disp = (address)p + byte_offset; | |
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127 assert((void*)p->obj_field_addr<oop>((jint)byte_offset) == ptr_plus_disp, |
| 0 | 128 "raw [ptr+disp] must be consistent with oop::field_base"); |
| 129 } | |
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130 jlong p_size = HeapWordSize * (jlong)(p->size()); |
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131 assert(byte_offset < p_size, err_msg("Unsafe access: offset " INT64_FORMAT " > object's size " INT64_FORMAT, byte_offset, p_size)); |
| 0 | 132 } |
| 133 #endif | |
| 134 if (sizeof(char*) == sizeof(jint)) // (this constant folds!) | |
| 135 return (address)p + (jint) byte_offset; | |
| 136 else | |
| 137 return (address)p + byte_offset; | |
| 138 } | |
| 139 | |
| 140 // Externally callable versions: | |
| 141 // (Use these in compiler intrinsics which emulate unsafe primitives.) | |
| 142 jlong Unsafe_field_offset_to_byte_offset(jlong field_offset) { | |
| 143 return field_offset; | |
| 144 } | |
| 145 jlong Unsafe_field_offset_from_byte_offset(jlong byte_offset) { | |
| 146 return byte_offset; | |
| 147 } | |
| 148 jint Unsafe_invocation_key_from_method_slot(jint slot) { | |
| 149 return invocation_key_from_method_slot(slot); | |
| 150 } | |
| 151 jint Unsafe_invocation_key_to_method_slot(jint key) { | |
| 152 return invocation_key_to_method_slot(key); | |
| 153 } | |
| 154 | |
| 155 | |
| 156 ///// Data in the Java heap. | |
| 157 | |
| 158 #define GET_FIELD(obj, offset, type_name, v) \ | |
| 159 oop p = JNIHandles::resolve(obj); \ | |
| 160 type_name v = *(type_name*)index_oop_from_field_offset_long(p, offset) | |
| 161 | |
| 162 #define SET_FIELD(obj, offset, type_name, x) \ | |
| 163 oop p = JNIHandles::resolve(obj); \ | |
| 164 *(type_name*)index_oop_from_field_offset_long(p, offset) = x | |
| 165 | |
| 166 #define GET_FIELD_VOLATILE(obj, offset, type_name, v) \ | |
| 167 oop p = JNIHandles::resolve(obj); \ | |
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168 if (support_IRIW_for_not_multiple_copy_atomic_cpu) { \ |
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169 OrderAccess::fence(); \ |
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170 } \ |
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171 volatile type_name v = OrderAccess::load_acquire((volatile type_name*)index_oop_from_field_offset_long(p, offset)); |
| 0 | 172 |
| 173 #define SET_FIELD_VOLATILE(obj, offset, type_name, x) \ | |
| 174 oop p = JNIHandles::resolve(obj); \ | |
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175 OrderAccess::release_store_fence((volatile type_name*)index_oop_from_field_offset_long(p, offset), x); |
| 0 | 176 |
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177 // Macros for oops that check UseCompressedOops |
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178 |
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179 #define GET_OOP_FIELD(obj, offset, v) \ |
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180 oop p = JNIHandles::resolve(obj); \ |
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181 oop v; \ |
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182 if (UseCompressedOops) { \ |
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183 narrowOop n = *(narrowOop*)index_oop_from_field_offset_long(p, offset); \ |
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184 v = oopDesc::decode_heap_oop(n); \ |
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185 } else { \ |
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186 v = *(oop*)index_oop_from_field_offset_long(p, offset); \ |
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187 } |
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188 |
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189 |
| 0 | 190 // Get/SetObject must be special-cased, since it works with handles. |
| 191 | |
| 192 // The xxx140 variants for backward compatibility do not allow a full-width offset. | |
| 193 UNSAFE_ENTRY(jobject, Unsafe_GetObject140(JNIEnv *env, jobject unsafe, jobject obj, jint offset)) | |
| 194 UnsafeWrapper("Unsafe_GetObject"); | |
| 195 if (obj == NULL) THROW_0(vmSymbols::java_lang_NullPointerException()); | |
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196 GET_OOP_FIELD(obj, offset, v) |
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197 jobject ret = JNIHandles::make_local(env, v); |
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198 #if INCLUDE_ALL_GCS |
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199 // We could be accessing the referent field in a reference |
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200 // object. If G1 is enabled then we need to register a non-null |
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201 // referent with the SATB barrier. |
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202 if (UseG1GC) { |
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203 bool needs_barrier = false; |
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204 |
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205 if (ret != NULL) { |
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206 if (offset == java_lang_ref_Reference::referent_offset) { |
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207 oop o = JNIHandles::resolve_non_null(obj); |
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208 Klass* k = o->klass(); |
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209 if (InstanceKlass::cast(k)->reference_type() != REF_NONE) { |
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210 assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity"); |
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211 needs_barrier = true; |
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212 } |
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213 } |
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214 } |
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215 |
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216 if (needs_barrier) { |
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217 oop referent = JNIHandles::resolve(ret); |
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218 G1SATBCardTableModRefBS::enqueue(referent); |
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219 } |
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220 } |
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221 #endif // INCLUDE_ALL_GCS |
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222 return ret; |
| 0 | 223 UNSAFE_END |
| 224 | |
| 225 UNSAFE_ENTRY(void, Unsafe_SetObject140(JNIEnv *env, jobject unsafe, jobject obj, jint offset, jobject x_h)) | |
| 226 UnsafeWrapper("Unsafe_SetObject"); | |
| 227 if (obj == NULL) THROW(vmSymbols::java_lang_NullPointerException()); | |
| 228 oop x = JNIHandles::resolve(x_h); | |
| 229 //SET_FIELD(obj, offset, oop, x); | |
| 230 oop p = JNIHandles::resolve(obj); | |
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231 if (UseCompressedOops) { |
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232 if (x != NULL) { |
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233 // If there is a heap base pointer, we are obliged to emit a store barrier. |
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234 oop_store((narrowOop*)index_oop_from_field_offset_long(p, offset), x); |
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235 } else { |
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236 narrowOop n = oopDesc::encode_heap_oop_not_null(x); |
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237 *(narrowOop*)index_oop_from_field_offset_long(p, offset) = n; |
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238 } |
| 0 | 239 } else { |
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240 if (x != NULL) { |
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241 // If there is a heap base pointer, we are obliged to emit a store barrier. |
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242 oop_store((oop*)index_oop_from_field_offset_long(p, offset), x); |
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243 } else { |
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244 *(oop*)index_oop_from_field_offset_long(p, offset) = x; |
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245 } |
| 0 | 246 } |
| 247 UNSAFE_END | |
| 248 | |
| 249 // The normal variants allow a null base pointer with an arbitrary address. | |
| 250 // But if the base pointer is non-null, the offset should make some sense. | |
| 251 // That is, it should be in the range [0, MAX_OBJECT_SIZE]. | |
| 252 UNSAFE_ENTRY(jobject, Unsafe_GetObject(JNIEnv *env, jobject unsafe, jobject obj, jlong offset)) | |
| 253 UnsafeWrapper("Unsafe_GetObject"); | |
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254 GET_OOP_FIELD(obj, offset, v) |
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255 jobject ret = JNIHandles::make_local(env, v); |
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256 #if INCLUDE_ALL_GCS |
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257 // We could be accessing the referent field in a reference |
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258 // object. If G1 is enabled then we need to register non-null |
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259 // referent with the SATB barrier. |
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260 if (UseG1GC) { |
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261 bool needs_barrier = false; |
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262 |
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263 if (ret != NULL) { |
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264 if (offset == java_lang_ref_Reference::referent_offset && obj != NULL) { |
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265 oop o = JNIHandles::resolve(obj); |
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266 Klass* k = o->klass(); |
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267 if (InstanceKlass::cast(k)->reference_type() != REF_NONE) { |
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268 assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity"); |
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269 needs_barrier = true; |
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270 } |
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271 } |
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272 } |
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273 |
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274 if (needs_barrier) { |
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275 oop referent = JNIHandles::resolve(ret); |
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276 G1SATBCardTableModRefBS::enqueue(referent); |
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277 } |
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278 } |
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279 #endif // INCLUDE_ALL_GCS |
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280 return ret; |
| 0 | 281 UNSAFE_END |
| 282 | |
| 283 UNSAFE_ENTRY(void, Unsafe_SetObject(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jobject x_h)) | |
| 284 UnsafeWrapper("Unsafe_SetObject"); | |
| 285 oop x = JNIHandles::resolve(x_h); | |
| 286 oop p = JNIHandles::resolve(obj); | |
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287 if (UseCompressedOops) { |
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288 oop_store((narrowOop*)index_oop_from_field_offset_long(p, offset), x); |
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289 } else { |
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290 oop_store((oop*)index_oop_from_field_offset_long(p, offset), x); |
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291 } |
| 0 | 292 UNSAFE_END |
| 293 | |
| 294 UNSAFE_ENTRY(jobject, Unsafe_GetObjectVolatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset)) | |
| 295 UnsafeWrapper("Unsafe_GetObjectVolatile"); | |
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296 oop p = JNIHandles::resolve(obj); |
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297 void* addr = index_oop_from_field_offset_long(p, offset); |
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298 volatile oop v; |
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299 if (UseCompressedOops) { |
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300 volatile narrowOop n = *(volatile narrowOop*) addr; |
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301 (void)const_cast<oop&>(v = oopDesc::decode_heap_oop(n)); |
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302 } else { |
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303 (void)const_cast<oop&>(v = *(volatile oop*) addr); |
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304 } |
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305 OrderAccess::acquire(); |
| 0 | 306 return JNIHandles::make_local(env, v); |
| 307 UNSAFE_END | |
| 308 | |
| 309 UNSAFE_ENTRY(void, Unsafe_SetObjectVolatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jobject x_h)) | |
| 310 UnsafeWrapper("Unsafe_SetObjectVolatile"); | |
| 311 oop x = JNIHandles::resolve(x_h); | |
| 312 oop p = JNIHandles::resolve(obj); | |
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313 void* addr = index_oop_from_field_offset_long(p, offset); |
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314 OrderAccess::release(); |
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315 if (UseCompressedOops) { |
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316 oop_store((narrowOop*)addr, x); |
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317 } else { |
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318 oop_store((oop*)addr, x); |
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319 } |
| 0 | 320 OrderAccess::fence(); |
| 321 UNSAFE_END | |
| 322 | |
| 10235 | 323 #ifndef SUPPORTS_NATIVE_CX8 |
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324 // Keep old code for platforms which may not have atomic jlong (8 bytes) instructions |
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325 |
| 0 | 326 // Volatile long versions must use locks if !VM_Version::supports_cx8(). |
| 327 // support_cx8 is a surrogate for 'supports atomic long memory ops'. | |
| 328 | |
| 329 UNSAFE_ENTRY(jlong, Unsafe_GetLongVolatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset)) | |
| 330 UnsafeWrapper("Unsafe_GetLongVolatile"); | |
| 331 { | |
| 332 if (VM_Version::supports_cx8()) { | |
| 333 GET_FIELD_VOLATILE(obj, offset, jlong, v); | |
| 334 return v; | |
| 335 } | |
| 336 else { | |
| 337 Handle p (THREAD, JNIHandles::resolve(obj)); | |
| 338 jlong* addr = (jlong*)(index_oop_from_field_offset_long(p(), offset)); | |
| 339 ObjectLocker ol(p, THREAD); | |
| 340 jlong value = *addr; | |
| 341 return value; | |
| 342 } | |
| 343 } | |
| 344 UNSAFE_END | |
| 345 | |
| 346 UNSAFE_ENTRY(void, Unsafe_SetLongVolatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jlong x)) | |
| 347 UnsafeWrapper("Unsafe_SetLongVolatile"); | |
| 348 { | |
| 349 if (VM_Version::supports_cx8()) { | |
| 350 SET_FIELD_VOLATILE(obj, offset, jlong, x); | |
| 351 } | |
| 352 else { | |
| 353 Handle p (THREAD, JNIHandles::resolve(obj)); | |
| 354 jlong* addr = (jlong*)(index_oop_from_field_offset_long(p(), offset)); | |
| 355 ObjectLocker ol(p, THREAD); | |
| 356 *addr = x; | |
| 357 } | |
| 358 } | |
| 359 UNSAFE_END | |
| 360 | |
| 10235 | 361 #endif // not SUPPORTS_NATIVE_CX8 |
| 0 | 362 |
| 363 #define DEFINE_GETSETOOP(jboolean, Boolean) \ | |
| 364 \ | |
| 365 UNSAFE_ENTRY(jboolean, Unsafe_Get##Boolean##140(JNIEnv *env, jobject unsafe, jobject obj, jint offset)) \ | |
| 366 UnsafeWrapper("Unsafe_Get"#Boolean); \ | |
| 367 if (obj == NULL) THROW_0(vmSymbols::java_lang_NullPointerException()); \ | |
| 368 GET_FIELD(obj, offset, jboolean, v); \ | |
| 369 return v; \ | |
| 370 UNSAFE_END \ | |
| 371 \ | |
| 372 UNSAFE_ENTRY(void, Unsafe_Set##Boolean##140(JNIEnv *env, jobject unsafe, jobject obj, jint offset, jboolean x)) \ | |
| 373 UnsafeWrapper("Unsafe_Set"#Boolean); \ | |
| 374 if (obj == NULL) THROW(vmSymbols::java_lang_NullPointerException()); \ | |
| 375 SET_FIELD(obj, offset, jboolean, x); \ | |
| 376 UNSAFE_END \ | |
| 377 \ | |
| 378 UNSAFE_ENTRY(jboolean, Unsafe_Get##Boolean(JNIEnv *env, jobject unsafe, jobject obj, jlong offset)) \ | |
| 379 UnsafeWrapper("Unsafe_Get"#Boolean); \ | |
| 380 GET_FIELD(obj, offset, jboolean, v); \ | |
| 381 return v; \ | |
| 382 UNSAFE_END \ | |
| 383 \ | |
| 384 UNSAFE_ENTRY(void, Unsafe_Set##Boolean(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jboolean x)) \ | |
| 385 UnsafeWrapper("Unsafe_Set"#Boolean); \ | |
| 386 SET_FIELD(obj, offset, jboolean, x); \ | |
| 387 UNSAFE_END \ | |
| 388 \ | |
| 389 // END DEFINE_GETSETOOP. | |
| 390 | |
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391 DEFINE_GETSETOOP(jboolean, Boolean) |
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392 DEFINE_GETSETOOP(jbyte, Byte) |
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393 DEFINE_GETSETOOP(jshort, Short); |
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394 DEFINE_GETSETOOP(jchar, Char); |
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395 DEFINE_GETSETOOP(jint, Int); |
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396 DEFINE_GETSETOOP(jlong, Long); |
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397 DEFINE_GETSETOOP(jfloat, Float); |
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398 DEFINE_GETSETOOP(jdouble, Double); |
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399 |
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400 #undef DEFINE_GETSETOOP |
| 0 | 401 |
| 402 #define DEFINE_GETSETOOP_VOLATILE(jboolean, Boolean) \ | |
| 403 \ | |
| 404 UNSAFE_ENTRY(jboolean, Unsafe_Get##Boolean##Volatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset)) \ | |
| 405 UnsafeWrapper("Unsafe_Get"#Boolean); \ | |
| 406 GET_FIELD_VOLATILE(obj, offset, jboolean, v); \ | |
| 407 return v; \ | |
| 408 UNSAFE_END \ | |
| 409 \ | |
| 410 UNSAFE_ENTRY(void, Unsafe_Set##Boolean##Volatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jboolean x)) \ | |
| 411 UnsafeWrapper("Unsafe_Set"#Boolean); \ | |
| 412 SET_FIELD_VOLATILE(obj, offset, jboolean, x); \ | |
| 413 UNSAFE_END \ | |
| 414 \ | |
| 415 // END DEFINE_GETSETOOP_VOLATILE. | |
| 416 | |
| 417 DEFINE_GETSETOOP_VOLATILE(jboolean, Boolean) | |
| 418 DEFINE_GETSETOOP_VOLATILE(jbyte, Byte) | |
| 419 DEFINE_GETSETOOP_VOLATILE(jshort, Short); | |
| 420 DEFINE_GETSETOOP_VOLATILE(jchar, Char); | |
| 421 DEFINE_GETSETOOP_VOLATILE(jint, Int); | |
| 422 DEFINE_GETSETOOP_VOLATILE(jfloat, Float); | |
| 423 DEFINE_GETSETOOP_VOLATILE(jdouble, Double); | |
| 424 | |
| 10235 | 425 #ifdef SUPPORTS_NATIVE_CX8 |
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426 DEFINE_GETSETOOP_VOLATILE(jlong, Long); |
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427 #endif |
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428 |
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429 #undef DEFINE_GETSETOOP_VOLATILE |
| 0 | 430 |
| 431 // The non-intrinsified versions of setOrdered just use setVolatile | |
| 432 | |
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433 UNSAFE_ENTRY(void, Unsafe_SetOrderedInt(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jint x)) |
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434 UnsafeWrapper("Unsafe_SetOrderedInt"); |
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435 SET_FIELD_VOLATILE(obj, offset, jint, x); |
| 0 | 436 UNSAFE_END |
| 437 | |
| 438 UNSAFE_ENTRY(void, Unsafe_SetOrderedObject(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jobject x_h)) | |
| 439 UnsafeWrapper("Unsafe_SetOrderedObject"); | |
| 440 oop x = JNIHandles::resolve(x_h); | |
| 441 oop p = JNIHandles::resolve(obj); | |
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442 void* addr = index_oop_from_field_offset_long(p, offset); |
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443 OrderAccess::release(); |
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444 if (UseCompressedOops) { |
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445 oop_store((narrowOop*)addr, x); |
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446 } else { |
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447 oop_store((oop*)addr, x); |
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448 } |
| 0 | 449 OrderAccess::fence(); |
| 450 UNSAFE_END | |
| 451 | |
| 452 UNSAFE_ENTRY(void, Unsafe_SetOrderedLong(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jlong x)) | |
| 453 UnsafeWrapper("Unsafe_SetOrderedLong"); | |
| 10235 | 454 #ifdef SUPPORTS_NATIVE_CX8 |
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455 SET_FIELD_VOLATILE(obj, offset, jlong, x); |
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456 #else |
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457 // Keep old code for platforms which may not have atomic long (8 bytes) instructions |
| 0 | 458 { |
| 459 if (VM_Version::supports_cx8()) { | |
| 460 SET_FIELD_VOLATILE(obj, offset, jlong, x); | |
| 461 } | |
| 462 else { | |
| 463 Handle p (THREAD, JNIHandles::resolve(obj)); | |
| 464 jlong* addr = (jlong*)(index_oop_from_field_offset_long(p(), offset)); | |
| 465 ObjectLocker ol(p, THREAD); | |
| 466 *addr = x; | |
| 467 } | |
| 468 } | |
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469 #endif |
| 0 | 470 UNSAFE_END |
| 471 | |
| 7425 | 472 UNSAFE_ENTRY(void, Unsafe_LoadFence(JNIEnv *env, jobject unsafe)) |
| 473 UnsafeWrapper("Unsafe_LoadFence"); | |
| 474 OrderAccess::acquire(); | |
| 475 UNSAFE_END | |
| 476 | |
| 477 UNSAFE_ENTRY(void, Unsafe_StoreFence(JNIEnv *env, jobject unsafe)) | |
| 478 UnsafeWrapper("Unsafe_StoreFence"); | |
| 479 OrderAccess::release(); | |
| 480 UNSAFE_END | |
| 481 | |
| 482 UNSAFE_ENTRY(void, Unsafe_FullFence(JNIEnv *env, jobject unsafe)) | |
| 483 UnsafeWrapper("Unsafe_FullFence"); | |
| 484 OrderAccess::fence(); | |
| 485 UNSAFE_END | |
| 486 | |
| 0 | 487 ////// Data in the C heap. |
| 488 | |
| 489 // Note: These do not throw NullPointerException for bad pointers. | |
| 490 // They just crash. Only a oop base pointer can generate a NullPointerException. | |
| 491 // | |
| 492 #define DEFINE_GETSETNATIVE(java_type, Type, native_type) \ | |
| 493 \ | |
| 494 UNSAFE_ENTRY(java_type, Unsafe_GetNative##Type(JNIEnv *env, jobject unsafe, jlong addr)) \ | |
| 495 UnsafeWrapper("Unsafe_GetNative"#Type); \ | |
| 496 void* p = addr_from_java(addr); \ | |
| 497 JavaThread* t = JavaThread::current(); \ | |
| 498 t->set_doing_unsafe_access(true); \ | |
| 499 java_type x = *(volatile native_type*)p; \ | |
| 500 t->set_doing_unsafe_access(false); \ | |
| 501 return x; \ | |
| 502 UNSAFE_END \ | |
| 503 \ | |
| 504 UNSAFE_ENTRY(void, Unsafe_SetNative##Type(JNIEnv *env, jobject unsafe, jlong addr, java_type x)) \ | |
| 505 UnsafeWrapper("Unsafe_SetNative"#Type); \ | |
| 506 JavaThread* t = JavaThread::current(); \ | |
| 507 t->set_doing_unsafe_access(true); \ | |
| 508 void* p = addr_from_java(addr); \ | |
| 509 *(volatile native_type*)p = x; \ | |
| 510 t->set_doing_unsafe_access(false); \ | |
| 511 UNSAFE_END \ | |
| 512 \ | |
| 513 // END DEFINE_GETSETNATIVE. | |
| 514 | |
| 515 DEFINE_GETSETNATIVE(jbyte, Byte, signed char) | |
| 516 DEFINE_GETSETNATIVE(jshort, Short, signed short); | |
| 517 DEFINE_GETSETNATIVE(jchar, Char, unsigned short); | |
| 518 DEFINE_GETSETNATIVE(jint, Int, jint); | |
| 519 // no long -- handled specially | |
| 520 DEFINE_GETSETNATIVE(jfloat, Float, float); | |
| 521 DEFINE_GETSETNATIVE(jdouble, Double, double); | |
| 522 | |
| 523 #undef DEFINE_GETSETNATIVE | |
| 524 | |
| 525 UNSAFE_ENTRY(jlong, Unsafe_GetNativeLong(JNIEnv *env, jobject unsafe, jlong addr)) | |
| 526 UnsafeWrapper("Unsafe_GetNativeLong"); | |
| 527 JavaThread* t = JavaThread::current(); | |
| 528 // We do it this way to avoid problems with access to heap using 64 | |
| 529 // bit loads, as jlong in heap could be not 64-bit aligned, and on | |
| 530 // some CPUs (SPARC) it leads to SIGBUS. | |
| 531 t->set_doing_unsafe_access(true); | |
| 532 void* p = addr_from_java(addr); | |
| 533 jlong x; | |
| 534 if (((intptr_t)p & 7) == 0) { | |
| 535 // jlong is aligned, do a volatile access | |
| 536 x = *(volatile jlong*)p; | |
| 537 } else { | |
| 538 jlong_accessor acc; | |
| 539 acc.words[0] = ((volatile jint*)p)[0]; | |
| 540 acc.words[1] = ((volatile jint*)p)[1]; | |
| 541 x = acc.long_value; | |
| 542 } | |
| 543 t->set_doing_unsafe_access(false); | |
| 544 return x; | |
| 545 UNSAFE_END | |
| 546 | |
| 547 UNSAFE_ENTRY(void, Unsafe_SetNativeLong(JNIEnv *env, jobject unsafe, jlong addr, jlong x)) | |
| 548 UnsafeWrapper("Unsafe_SetNativeLong"); | |
| 549 JavaThread* t = JavaThread::current(); | |
| 550 // see comment for Unsafe_GetNativeLong | |
| 551 t->set_doing_unsafe_access(true); | |
| 552 void* p = addr_from_java(addr); | |
| 553 if (((intptr_t)p & 7) == 0) { | |
| 554 // jlong is aligned, do a volatile access | |
| 555 *(volatile jlong*)p = x; | |
| 556 } else { | |
| 557 jlong_accessor acc; | |
| 558 acc.long_value = x; | |
| 559 ((volatile jint*)p)[0] = acc.words[0]; | |
| 560 ((volatile jint*)p)[1] = acc.words[1]; | |
| 561 } | |
| 562 t->set_doing_unsafe_access(false); | |
| 563 UNSAFE_END | |
| 564 | |
| 565 | |
| 566 UNSAFE_ENTRY(jlong, Unsafe_GetNativeAddress(JNIEnv *env, jobject unsafe, jlong addr)) | |
| 567 UnsafeWrapper("Unsafe_GetNativeAddress"); | |
| 568 void* p = addr_from_java(addr); | |
| 569 return addr_to_java(*(void**)p); | |
| 570 UNSAFE_END | |
| 571 | |
| 572 UNSAFE_ENTRY(void, Unsafe_SetNativeAddress(JNIEnv *env, jobject unsafe, jlong addr, jlong x)) | |
| 573 UnsafeWrapper("Unsafe_SetNativeAddress"); | |
| 574 void* p = addr_from_java(addr); | |
| 575 *(void**)p = addr_from_java(x); | |
| 576 UNSAFE_END | |
| 577 | |
| 578 | |
| 579 ////// Allocation requests | |
| 580 | |
| 581 UNSAFE_ENTRY(jobject, Unsafe_AllocateInstance(JNIEnv *env, jobject unsafe, jclass cls)) | |
| 582 UnsafeWrapper("Unsafe_AllocateInstance"); | |
| 583 { | |
| 584 ThreadToNativeFromVM ttnfv(thread); | |
| 585 return env->AllocObject(cls); | |
| 586 } | |
| 587 UNSAFE_END | |
| 588 | |
| 589 UNSAFE_ENTRY(jlong, Unsafe_AllocateMemory(JNIEnv *env, jobject unsafe, jlong size)) | |
| 590 UnsafeWrapper("Unsafe_AllocateMemory"); | |
| 591 size_t sz = (size_t)size; | |
| 592 if (sz != (julong)size || size < 0) { | |
| 593 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
| 594 } | |
| 595 if (sz == 0) { | |
| 596 return 0; | |
| 597 } | |
| 598 sz = round_to(sz, HeapWordSize); | |
| 6197 | 599 void* x = os::malloc(sz, mtInternal); |
| 0 | 600 if (x == NULL) { |
| 601 THROW_0(vmSymbols::java_lang_OutOfMemoryError()); | |
| 602 } | |
| 603 //Copy::fill_to_words((HeapWord*)x, sz / HeapWordSize); | |
| 604 return addr_to_java(x); | |
| 605 UNSAFE_END | |
| 606 | |
| 607 UNSAFE_ENTRY(jlong, Unsafe_ReallocateMemory(JNIEnv *env, jobject unsafe, jlong addr, jlong size)) | |
| 608 UnsafeWrapper("Unsafe_ReallocateMemory"); | |
| 609 void* p = addr_from_java(addr); | |
| 610 size_t sz = (size_t)size; | |
| 611 if (sz != (julong)size || size < 0) { | |
| 612 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
| 613 } | |
| 614 if (sz == 0) { | |
| 615 os::free(p); | |
| 616 return 0; | |
| 617 } | |
| 618 sz = round_to(sz, HeapWordSize); | |
| 6197 | 619 void* x = (p == NULL) ? os::malloc(sz, mtInternal) : os::realloc(p, sz, mtInternal); |
| 0 | 620 if (x == NULL) { |
| 621 THROW_0(vmSymbols::java_lang_OutOfMemoryError()); | |
| 622 } | |
| 623 return addr_to_java(x); | |
| 624 UNSAFE_END | |
| 625 | |
| 626 UNSAFE_ENTRY(void, Unsafe_FreeMemory(JNIEnv *env, jobject unsafe, jlong addr)) | |
| 627 UnsafeWrapper("Unsafe_FreeMemory"); | |
| 628 void* p = addr_from_java(addr); | |
| 629 if (p == NULL) { | |
| 630 return; | |
| 631 } | |
| 632 os::free(p); | |
| 633 UNSAFE_END | |
| 634 | |
| 635 UNSAFE_ENTRY(void, Unsafe_SetMemory(JNIEnv *env, jobject unsafe, jlong addr, jlong size, jbyte value)) | |
| 636 UnsafeWrapper("Unsafe_SetMemory"); | |
| 637 size_t sz = (size_t)size; | |
| 638 if (sz != (julong)size || size < 0) { | |
| 639 THROW(vmSymbols::java_lang_IllegalArgumentException()); | |
| 640 } | |
| 641 char* p = (char*) addr_from_java(addr); | |
| 642 Copy::fill_to_memory_atomic(p, sz, value); | |
| 643 UNSAFE_END | |
| 644 | |
| 645 UNSAFE_ENTRY(void, Unsafe_SetMemory2(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jlong size, jbyte value)) | |
| 646 UnsafeWrapper("Unsafe_SetMemory"); | |
| 647 size_t sz = (size_t)size; | |
| 648 if (sz != (julong)size || size < 0) { | |
| 649 THROW(vmSymbols::java_lang_IllegalArgumentException()); | |
| 650 } | |
| 651 oop base = JNIHandles::resolve(obj); | |
| 652 void* p = index_oop_from_field_offset_long(base, offset); | |
| 653 Copy::fill_to_memory_atomic(p, sz, value); | |
| 654 UNSAFE_END | |
| 655 | |
| 656 UNSAFE_ENTRY(void, Unsafe_CopyMemory(JNIEnv *env, jobject unsafe, jlong srcAddr, jlong dstAddr, jlong size)) | |
| 657 UnsafeWrapper("Unsafe_CopyMemory"); | |
| 658 if (size == 0) { | |
| 659 return; | |
| 660 } | |
| 661 size_t sz = (size_t)size; | |
| 662 if (sz != (julong)size || size < 0) { | |
| 663 THROW(vmSymbols::java_lang_IllegalArgumentException()); | |
| 664 } | |
| 665 void* src = addr_from_java(srcAddr); | |
| 666 void* dst = addr_from_java(dstAddr); | |
| 667 Copy::conjoint_memory_atomic(src, dst, sz); | |
| 668 UNSAFE_END | |
| 669 | |
| 670 UNSAFE_ENTRY(void, Unsafe_CopyMemory2(JNIEnv *env, jobject unsafe, jobject srcObj, jlong srcOffset, jobject dstObj, jlong dstOffset, jlong size)) | |
| 671 UnsafeWrapper("Unsafe_CopyMemory"); | |
| 672 if (size == 0) { | |
| 673 return; | |
| 674 } | |
| 675 size_t sz = (size_t)size; | |
| 676 if (sz != (julong)size || size < 0) { | |
| 677 THROW(vmSymbols::java_lang_IllegalArgumentException()); | |
| 678 } | |
| 679 oop srcp = JNIHandles::resolve(srcObj); | |
| 680 oop dstp = JNIHandles::resolve(dstObj); | |
| 681 if (dstp != NULL && !dstp->is_typeArray()) { | |
| 682 // NYI: This works only for non-oop arrays at present. | |
| 683 // Generalizing it would be reasonable, but requires card marking. | |
| 684 // Also, autoboxing a Long from 0L in copyMemory(x,y, 0L,z, n) would be bad. | |
| 685 THROW(vmSymbols::java_lang_IllegalArgumentException()); | |
| 686 } | |
| 687 void* src = index_oop_from_field_offset_long(srcp, srcOffset); | |
| 688 void* dst = index_oop_from_field_offset_long(dstp, dstOffset); | |
| 689 Copy::conjoint_memory_atomic(src, dst, sz); | |
| 690 UNSAFE_END | |
| 691 | |
| 692 | |
| 693 ////// Random queries | |
| 694 | |
| 695 // See comment at file start about UNSAFE_LEAF | |
| 696 //UNSAFE_LEAF(jint, Unsafe_AddressSize()) | |
| 697 UNSAFE_ENTRY(jint, Unsafe_AddressSize(JNIEnv *env, jobject unsafe)) | |
| 698 UnsafeWrapper("Unsafe_AddressSize"); | |
| 699 return sizeof(void*); | |
| 700 UNSAFE_END | |
| 701 | |
| 702 // See comment at file start about UNSAFE_LEAF | |
| 703 //UNSAFE_LEAF(jint, Unsafe_PageSize()) | |
| 704 UNSAFE_ENTRY(jint, Unsafe_PageSize(JNIEnv *env, jobject unsafe)) | |
| 705 UnsafeWrapper("Unsafe_PageSize"); | |
| 706 return os::vm_page_size(); | |
| 707 UNSAFE_END | |
| 708 | |
| 709 jint find_field_offset(jobject field, int must_be_static, TRAPS) { | |
| 710 if (field == NULL) { | |
| 711 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 712 } | |
| 713 | |
| 714 oop reflected = JNIHandles::resolve_non_null(field); | |
| 715 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
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716 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 717 int slot = java_lang_reflect_Field::slot(reflected); |
| 718 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
| 719 | |
| 720 if (must_be_static >= 0) { | |
| 721 int really_is_static = ((modifiers & JVM_ACC_STATIC) != 0); | |
| 722 if (must_be_static != really_is_static) { | |
| 723 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
| 724 } | |
| 725 } | |
| 726 | |
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727 int offset = InstanceKlass::cast(k)->field_offset(slot); |
| 0 | 728 return field_offset_from_byte_offset(offset); |
| 729 } | |
| 730 | |
| 731 UNSAFE_ENTRY(jlong, Unsafe_ObjectFieldOffset(JNIEnv *env, jobject unsafe, jobject field)) | |
| 732 UnsafeWrapper("Unsafe_ObjectFieldOffset"); | |
| 733 return find_field_offset(field, 0, THREAD); | |
| 734 UNSAFE_END | |
| 735 | |
| 736 UNSAFE_ENTRY(jlong, Unsafe_StaticFieldOffset(JNIEnv *env, jobject unsafe, jobject field)) | |
| 737 UnsafeWrapper("Unsafe_StaticFieldOffset"); | |
| 738 return find_field_offset(field, 1, THREAD); | |
| 739 UNSAFE_END | |
| 740 | |
| 741 UNSAFE_ENTRY(jobject, Unsafe_StaticFieldBaseFromField(JNIEnv *env, jobject unsafe, jobject field)) | |
| 742 UnsafeWrapper("Unsafe_StaticFieldBase"); | |
| 743 // Note: In this VM implementation, a field address is always a short | |
| 744 // offset from the base of a a klass metaobject. Thus, the full dynamic | |
| 745 // range of the return type is never used. However, some implementations | |
| 746 // might put the static field inside an array shared by many classes, | |
| 747 // or even at a fixed address, in which case the address could be quite | |
| 748 // large. In that last case, this function would return NULL, since | |
| 749 // the address would operate alone, without any base pointer. | |
| 750 | |
| 751 if (field == NULL) THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 752 | |
| 753 oop reflected = JNIHandles::resolve_non_null(field); | |
| 754 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
| 755 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
| 756 | |
| 757 if ((modifiers & JVM_ACC_STATIC) == 0) { | |
| 758 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
| 759 } | |
| 760 | |
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761 return JNIHandles::make_local(env, mirror); |
| 0 | 762 UNSAFE_END |
| 763 | |
| 764 //@deprecated | |
| 765 UNSAFE_ENTRY(jint, Unsafe_FieldOffset(JNIEnv *env, jobject unsafe, jobject field)) | |
| 766 UnsafeWrapper("Unsafe_FieldOffset"); | |
| 767 // tries (but fails) to be polymorphic between static and non-static: | |
| 768 jlong offset = find_field_offset(field, -1, THREAD); | |
| 769 guarantee(offset == (jint)offset, "offset fits in 32 bits"); | |
| 770 return (jint)offset; | |
| 771 UNSAFE_END | |
| 772 | |
| 773 //@deprecated | |
| 774 UNSAFE_ENTRY(jobject, Unsafe_StaticFieldBaseFromClass(JNIEnv *env, jobject unsafe, jobject clazz)) | |
| 775 UnsafeWrapper("Unsafe_StaticFieldBase"); | |
| 776 if (clazz == NULL) { | |
| 777 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 778 } | |
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779 return JNIHandles::make_local(env, JNIHandles::resolve_non_null(clazz)); |
| 0 | 780 UNSAFE_END |
| 781 | |
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782 UNSAFE_ENTRY(void, Unsafe_EnsureClassInitialized(JNIEnv *env, jobject unsafe, jobject clazz)) { |
| 0 | 783 UnsafeWrapper("Unsafe_EnsureClassInitialized"); |
| 784 if (clazz == NULL) { | |
| 785 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 786 } | |
| 787 oop mirror = JNIHandles::resolve_non_null(clazz); | |
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788 |
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789 Klass* klass = java_lang_Class::as_Klass(mirror); |
| 6983 | 790 if (klass != NULL && klass->should_be_initialized()) { |
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791 InstanceKlass* k = InstanceKlass::cast(klass); |
| 0 | 792 k->initialize(CHECK); |
| 793 } | |
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794 } |
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795 UNSAFE_END |
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796 |
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797 UNSAFE_ENTRY(jboolean, Unsafe_ShouldBeInitialized(JNIEnv *env, jobject unsafe, jobject clazz)) { |
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798 UnsafeWrapper("Unsafe_ShouldBeInitialized"); |
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799 if (clazz == NULL) { |
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800 THROW_(vmSymbols::java_lang_NullPointerException(), false); |
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801 } |
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802 oop mirror = JNIHandles::resolve_non_null(clazz); |
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803 Klass* klass = java_lang_Class::as_Klass(mirror); |
| 6983 | 804 if (klass != NULL && klass->should_be_initialized()) { |
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805 return true; |
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806 } |
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807 return false; |
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808 } |
| 0 | 809 UNSAFE_END |
| 810 | |
| 811 static void getBaseAndScale(int& base, int& scale, jclass acls, TRAPS) { | |
| 812 if (acls == NULL) { | |
| 813 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 814 } | |
| 815 oop mirror = JNIHandles::resolve_non_null(acls); | |
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816 Klass* k = java_lang_Class::as_Klass(mirror); |
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817 if (k == NULL || !k->oop_is_array()) { |
| 0 | 818 THROW(vmSymbols::java_lang_InvalidClassException()); |
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819 } else if (k->oop_is_objArray()) { |
| 0 | 820 base = arrayOopDesc::base_offset_in_bytes(T_OBJECT); |
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821 scale = heapOopSize; |
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822 } else if (k->oop_is_typeArray()) { |
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823 TypeArrayKlass* tak = TypeArrayKlass::cast(k); |
| 0 | 824 base = tak->array_header_in_bytes(); |
| 825 assert(base == arrayOopDesc::base_offset_in_bytes(tak->element_type()), "array_header_size semantics ok"); | |
| 826 scale = (1 << tak->log2_element_size()); | |
| 827 } else { | |
| 828 ShouldNotReachHere(); | |
| 829 } | |
| 830 } | |
| 831 | |
| 832 UNSAFE_ENTRY(jint, Unsafe_ArrayBaseOffset(JNIEnv *env, jobject unsafe, jclass acls)) | |
| 833 UnsafeWrapper("Unsafe_ArrayBaseOffset"); | |
| 834 int base, scale; | |
| 835 getBaseAndScale(base, scale, acls, CHECK_0); | |
| 836 return field_offset_from_byte_offset(base); | |
| 837 UNSAFE_END | |
| 838 | |
| 839 | |
| 840 UNSAFE_ENTRY(jint, Unsafe_ArrayIndexScale(JNIEnv *env, jobject unsafe, jclass acls)) | |
| 841 UnsafeWrapper("Unsafe_ArrayIndexScale"); | |
| 842 int base, scale; | |
| 843 getBaseAndScale(base, scale, acls, CHECK_0); | |
| 844 // This VM packs both fields and array elements down to the byte. | |
| 845 // But watch out: If this changes, so that array references for | |
| 846 // a given primitive type (say, T_BOOLEAN) use different memory units | |
| 847 // than fields, this method MUST return zero for such arrays. | |
| 848 // For example, the VM used to store sub-word sized fields in full | |
| 849 // words in the object layout, so that accessors like getByte(Object,int) | |
| 850 // did not really do what one might expect for arrays. Therefore, | |
| 851 // this function used to report a zero scale factor, so that the user | |
| 852 // would know not to attempt to access sub-word array elements. | |
| 853 // // Code for unpacked fields: | |
| 854 // if (scale < wordSize) return 0; | |
| 855 | |
| 856 // The following allows for a pretty general fieldOffset cookie scheme, | |
| 857 // but requires it to be linear in byte offset. | |
| 858 return field_offset_from_byte_offset(scale) - field_offset_from_byte_offset(0); | |
| 859 UNSAFE_END | |
| 860 | |
| 861 | |
| 862 static inline void throw_new(JNIEnv *env, const char *ename) { | |
| 863 char buf[100]; | |
| 864 strcpy(buf, "java/lang/"); | |
| 865 strcat(buf, ename); | |
| 866 jclass cls = env->FindClass(buf); | |
|
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|
867 if (env->ExceptionCheck()) { |
|
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|
868 env->ExceptionClear(); |
|
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|
869 tty->print_cr("Unsafe: cannot throw %s because FindClass has failed", buf); |
|
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870 return; |
|
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|
871 } |
| 0 | 872 char* msg = NULL; |
| 873 env->ThrowNew(cls, msg); | |
| 874 } | |
| 875 | |
|
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876 static jclass Unsafe_DefineClass_impl(JNIEnv *env, jstring name, jbyteArray data, int offset, int length, jobject loader, jobject pd) { |
| 0 | 877 { |
| 878 // Code lifted from JDK 1.3 ClassLoader.c | |
| 879 | |
| 880 jbyte *body; | |
| 881 char *utfName; | |
| 882 jclass result = 0; | |
| 883 char buf[128]; | |
| 884 | |
| 885 if (UsePerfData) { | |
| 886 ClassLoader::unsafe_defineClassCallCounter()->inc(); | |
| 887 } | |
| 888 | |
| 889 if (data == NULL) { | |
| 890 throw_new(env, "NullPointerException"); | |
| 891 return 0; | |
| 892 } | |
| 893 | |
| 894 /* Work around 4153825. malloc crashes on Solaris when passed a | |
| 895 * negative size. | |
| 896 */ | |
| 897 if (length < 0) { | |
| 898 throw_new(env, "ArrayIndexOutOfBoundsException"); | |
| 899 return 0; | |
| 900 } | |
| 901 | |
| 6197 | 902 body = NEW_C_HEAP_ARRAY(jbyte, length, mtInternal); |
| 0 | 903 |
| 904 if (body == 0) { | |
| 905 throw_new(env, "OutOfMemoryError"); | |
| 906 return 0; | |
| 907 } | |
| 908 | |
| 909 env->GetByteArrayRegion(data, offset, length, body); | |
| 910 | |
| 911 if (env->ExceptionOccurred()) | |
| 912 goto free_body; | |
| 913 | |
| 914 if (name != NULL) { | |
| 915 uint len = env->GetStringUTFLength(name); | |
| 916 int unicode_len = env->GetStringLength(name); | |
| 917 if (len >= sizeof(buf)) { | |
| 6197 | 918 utfName = NEW_C_HEAP_ARRAY(char, len + 1, mtInternal); |
| 0 | 919 if (utfName == NULL) { |
| 920 throw_new(env, "OutOfMemoryError"); | |
| 921 goto free_body; | |
| 922 } | |
| 923 } else { | |
| 924 utfName = buf; | |
| 925 } | |
| 926 env->GetStringUTFRegion(name, 0, unicode_len, utfName); | |
| 927 //VerifyFixClassname(utfName); | |
| 928 for (uint i = 0; i < len; i++) { | |
| 929 if (utfName[i] == '.') utfName[i] = '/'; | |
| 930 } | |
| 931 } else { | |
| 932 utfName = NULL; | |
| 933 } | |
| 934 | |
| 935 result = JVM_DefineClass(env, utfName, loader, body, length, pd); | |
| 936 | |
| 937 if (utfName && utfName != buf) | |
| 6197 | 938 FREE_C_HEAP_ARRAY(char, utfName, mtInternal); |
| 0 | 939 |
| 940 free_body: | |
| 6197 | 941 FREE_C_HEAP_ARRAY(jbyte, body, mtInternal); |
| 0 | 942 return result; |
| 943 } | |
| 944 } | |
| 945 | |
| 946 | |
|
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947 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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948 UnsafeWrapper("Unsafe_DefineClass"); |
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949 { |
|
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950 ThreadToNativeFromVM ttnfv(thread); |
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951 return Unsafe_DefineClass_impl(env, name, data, offset, length, loader, pd); |
|
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952 } |
|
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953 UNSAFE_END |
|
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954 |
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955 |
| 0 | 956 UNSAFE_ENTRY(jclass, Unsafe_DefineClass0(JNIEnv *env, jobject unsafe, jstring name, jbyteArray data, int offset, int length)) |
| 957 UnsafeWrapper("Unsafe_DefineClass"); | |
| 958 { | |
| 959 ThreadToNativeFromVM ttnfv(thread); | |
| 960 | |
| 961 int depthFromDefineClass0 = 1; | |
| 962 jclass caller = JVM_GetCallerClass(env, depthFromDefineClass0); | |
| 963 jobject loader = (caller == NULL) ? NULL : JVM_GetClassLoader(env, caller); | |
| 964 jobject pd = (caller == NULL) ? NULL : JVM_GetProtectionDomain(env, caller); | |
| 965 | |
|
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966 return Unsafe_DefineClass_impl(env, name, data, offset, length, loader, pd); |
| 0 | 967 } |
| 968 UNSAFE_END | |
| 969 | |
| 970 | |
|
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971 #define DAC_Args CLS"[B["OBJ |
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972 // define a class but do not make it known to the class loader or system dictionary |
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973 // - host_class: supplies context for linkage, access control, protection domain, and class loader |
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974 // - data: bytes of a class file, a raw memory address (length gives the number of bytes) |
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975 // - cp_patches: where non-null entries exist, they replace corresponding CP entries in data |
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976 |
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977 // When you load an anonymous class U, it works as if you changed its name just before loading, |
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978 // to a name that you will never use again. Since the name is lost, no other class can directly |
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979 // link to any member of U. Just after U is loaded, the only way to use it is reflectively, |
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980 // through java.lang.Class methods like Class.newInstance. |
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981 |
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982 // Access checks for linkage sites within U continue to follow the same rules as for named classes. |
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983 // The package of an anonymous class is given by the package qualifier on the name under which it was loaded. |
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984 // An anonymous class also has special privileges to access any member of its host class. |
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985 // This is the main reason why this loading operation is unsafe. The purpose of this is to |
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986 // allow language implementations to simulate "open classes"; a host class in effect gets |
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987 // new code when an anonymous class is loaded alongside it. A less convenient but more |
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988 // standard way to do this is with reflection, which can also be set to ignore access |
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989 // restrictions. |
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990 |
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991 // Access into an anonymous class is possible only through reflection. Therefore, there |
|
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992 // are no special access rules for calling into an anonymous class. The relaxed access |
|
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993 // rule for the host class is applied in the opposite direction: A host class reflectively |
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994 // access one of its anonymous classes. |
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995 |
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996 // If you load the same bytecodes twice, you get two different classes. You can reload |
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997 // the same bytecodes with or without varying CP patches. |
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998 |
|
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999 // By using the CP patching array, you can have a new anonymous class U2 refer to an older one U1. |
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1000 // The bytecodes for U2 should refer to U1 by a symbolic name (doesn't matter what the name is). |
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1001 // The CONSTANT_Class entry for that name can be patched to refer directly to U1. |
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1002 |
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1003 // This allows, for example, U2 to use U1 as a superclass or super-interface, or as |
|
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1004 // an outer class (so that U2 is an anonymous inner class of anonymous U1). |
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1005 // It is not possible for a named class, or an older anonymous class, to refer by |
|
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1006 // name (via its CP) to a newer anonymous class. |
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1007 |
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1008 // CP patching may also be used to modify (i.e., hack) the names of methods, classes, |
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1009 // or type descriptors used in the loaded anonymous class. |
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1010 |
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1011 // Finally, CP patching may be used to introduce "live" objects into the constant pool, |
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1012 // instead of "dead" strings. A compiled statement like println((Object)"hello") can |
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1013 // be changed to println(greeting), where greeting is an arbitrary object created before |
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1014 // the anonymous class is loaded. This is useful in dynamic languages, in which |
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1015 // various kinds of metaobjects must be introduced as constants into bytecode. |
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1016 // Note the cast (Object), which tells the verifier to expect an arbitrary object, |
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1017 // not just a literal string. For such ldc instructions, the verifier uses the |
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1018 // type Object instead of String, if the loaded constant is not in fact a String. |
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1019 |
|
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1020 static instanceKlassHandle |
|
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1021 Unsafe_DefineAnonymousClass_impl(JNIEnv *env, |
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1022 jclass host_class, jbyteArray data, jobjectArray cp_patches_jh, |
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1023 HeapWord* *temp_alloc, |
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1024 TRAPS) { |
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1025 |
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1026 if (UsePerfData) { |
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1027 ClassLoader::unsafe_defineClassCallCounter()->inc(); |
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1028 } |
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1029 |
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1030 if (data == NULL) { |
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1031 THROW_0(vmSymbols::java_lang_NullPointerException()); |
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1032 } |
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1033 |
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1034 jint length = typeArrayOop(JNIHandles::resolve_non_null(data))->length(); |
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1035 jint word_length = (length + sizeof(HeapWord)-1) / sizeof(HeapWord); |
| 6197 | 1036 HeapWord* body = NEW_C_HEAP_ARRAY(HeapWord, word_length, mtInternal); |
|
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1037 if (body == NULL) { |
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1038 THROW_0(vmSymbols::java_lang_OutOfMemoryError()); |
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1039 } |
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1040 |
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1041 // caller responsible to free it: |
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1042 (*temp_alloc) = body; |
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1043 |
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1044 { |
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1045 jbyte* array_base = typeArrayOop(JNIHandles::resolve_non_null(data))->byte_at_addr(0); |
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1046 Copy::conjoint_words((HeapWord*) array_base, body, word_length); |
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1047 } |
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1048 |
|
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1049 u1* class_bytes = (u1*) body; |
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1050 int class_bytes_length = (int) length; |
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1051 if (class_bytes_length < 0) class_bytes_length = 0; |
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1052 if (class_bytes == NULL |
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1053 || host_class == NULL |
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1054 || length != class_bytes_length) |
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1055 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); |
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1056 |
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1057 objArrayHandle cp_patches_h; |
|
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1058 if (cp_patches_jh != NULL) { |
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1059 oop p = JNIHandles::resolve_non_null(cp_patches_jh); |
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1060 if (!p->is_objArray()) |
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1061 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); |
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1062 cp_patches_h = objArrayHandle(THREAD, (objArrayOop)p); |
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1063 } |
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1064 |
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1065 KlassHandle host_klass(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(host_class))); |
|
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1066 const char* host_source = host_klass->external_name(); |
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1067 Handle host_loader(THREAD, host_klass->class_loader()); |
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1068 Handle host_domain(THREAD, host_klass->protection_domain()); |
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1069 |
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1070 GrowableArray<Handle>* cp_patches = NULL; |
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1071 if (cp_patches_h.not_null()) { |
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1072 int alen = cp_patches_h->length(); |
|
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1073 for (int i = alen-1; i >= 0; i--) { |
|
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1074 oop p = cp_patches_h->obj_at(i); |
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1075 if (p != NULL) { |
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1076 Handle patch(THREAD, p); |
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1077 if (cp_patches == NULL) |
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1078 cp_patches = new GrowableArray<Handle>(i+1, i+1, Handle()); |
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1079 cp_patches->at_put(i, patch); |
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1080 } |
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1081 } |
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1082 } |
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1083 |
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1084 ClassFileStream st(class_bytes, class_bytes_length, (char*) host_source); |
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1085 |
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1086 instanceKlassHandle anon_klass; |
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1087 { |
|
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1088 Symbol* no_class_name = NULL; |
|
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1089 Klass* anonk = SystemDictionary::parse_stream(no_class_name, |
|
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1090 host_loader, host_domain, |
|
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1091 &st, host_klass, cp_patches, |
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1092 CHECK_NULL); |
|
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1093 if (anonk == NULL) return NULL; |
|
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1094 anon_klass = instanceKlassHandle(THREAD, anonk); |
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1095 } |
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1096 |
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1097 return anon_klass; |
|
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1098 } |
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1099 |
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1100 UNSAFE_ENTRY(jclass, Unsafe_DefineAnonymousClass(JNIEnv *env, jobject unsafe, jclass host_class, jbyteArray data, jobjectArray cp_patches_jh)) |
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1101 { |
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1102 instanceKlassHandle anon_klass; |
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1103 jobject res_jh = NULL; |
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1104 |
|
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1105 UnsafeWrapper("Unsafe_DefineAnonymousClass"); |
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1106 ResourceMark rm(THREAD); |
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1107 |
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1108 HeapWord* temp_alloc = NULL; |
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1109 |
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1110 anon_klass = Unsafe_DefineAnonymousClass_impl(env, host_class, data, |
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1111 cp_patches_jh, |
|
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1112 &temp_alloc, THREAD); |
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1113 if (anon_klass() != NULL) |
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1114 res_jh = JNIHandles::make_local(env, anon_klass->java_mirror()); |
|
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1115 |
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1116 // try/finally clause: |
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1117 if (temp_alloc != NULL) { |
| 6197 | 1118 FREE_C_HEAP_ARRAY(HeapWord, temp_alloc, mtInternal); |
|
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1119 } |
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1120 |
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1121 // The anonymous class loader data has been artificially been kept alive to |
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1122 // this point. The mirror and any instances of this class have to keep |
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1123 // it alive afterwards. |
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1124 if (anon_klass() != NULL) { |
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1125 anon_klass->class_loader_data()->set_keep_alive(false); |
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1126 } |
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1127 |
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1128 // let caller initialize it as needed... |
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1129 |
|
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1130 return (jclass) res_jh; |
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1131 } |
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1132 UNSAFE_END |
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1133 |
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1134 |
| 0 | 1135 |
| 1136 UNSAFE_ENTRY(void, Unsafe_MonitorEnter(JNIEnv *env, jobject unsafe, jobject jobj)) | |
| 1137 UnsafeWrapper("Unsafe_MonitorEnter"); | |
| 1138 { | |
| 1139 if (jobj == NULL) { | |
| 1140 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1141 } | |
| 1142 Handle obj(thread, JNIHandles::resolve_non_null(jobj)); | |
| 1143 ObjectSynchronizer::jni_enter(obj, CHECK); | |
| 1144 } | |
| 1145 UNSAFE_END | |
| 1146 | |
| 1147 | |
| 1148 UNSAFE_ENTRY(jboolean, Unsafe_TryMonitorEnter(JNIEnv *env, jobject unsafe, jobject jobj)) | |
| 1149 UnsafeWrapper("Unsafe_TryMonitorEnter"); | |
| 1150 { | |
| 1151 if (jobj == NULL) { | |
| 1152 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
| 1153 } | |
| 1154 Handle obj(thread, JNIHandles::resolve_non_null(jobj)); | |
| 1155 bool res = ObjectSynchronizer::jni_try_enter(obj, CHECK_0); | |
| 1156 return (res ? JNI_TRUE : JNI_FALSE); | |
| 1157 } | |
| 1158 UNSAFE_END | |
| 1159 | |
| 1160 | |
| 1161 UNSAFE_ENTRY(void, Unsafe_MonitorExit(JNIEnv *env, jobject unsafe, jobject jobj)) | |
| 1162 UnsafeWrapper("Unsafe_MonitorExit"); | |
| 1163 { | |
| 1164 if (jobj == NULL) { | |
| 1165 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1166 } | |
| 1167 Handle obj(THREAD, JNIHandles::resolve_non_null(jobj)); | |
| 1168 ObjectSynchronizer::jni_exit(obj(), CHECK); | |
| 1169 } | |
| 1170 UNSAFE_END | |
| 1171 | |
| 1172 | |
| 1173 UNSAFE_ENTRY(void, Unsafe_ThrowException(JNIEnv *env, jobject unsafe, jthrowable thr)) | |
| 1174 UnsafeWrapper("Unsafe_ThrowException"); | |
| 1175 { | |
| 1176 ThreadToNativeFromVM ttnfv(thread); | |
| 1177 env->Throw(thr); | |
| 1178 } | |
| 1179 UNSAFE_END | |
| 1180 | |
| 1181 // JSR166 ------------------------------------------------------------------ | |
| 1182 | |
| 1183 UNSAFE_ENTRY(jboolean, Unsafe_CompareAndSwapObject(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jobject e_h, jobject x_h)) | |
| 1184 UnsafeWrapper("Unsafe_CompareAndSwapObject"); | |
| 1185 oop x = JNIHandles::resolve(x_h); | |
| 1186 oop e = JNIHandles::resolve(e_h); | |
| 1187 oop p = JNIHandles::resolve(obj); | |
|
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1188 HeapWord* addr = (HeapWord *)index_oop_from_field_offset_long(p, offset); |
|
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1189 oop res = oopDesc::atomic_compare_exchange_oop(x, addr, e, true); |
|
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1190 jboolean success = (res == e); |
| 0 | 1191 if (success) |
|
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1192 update_barrier_set((void*)addr, x); |
| 0 | 1193 return success; |
| 1194 UNSAFE_END | |
| 1195 | |
| 1196 UNSAFE_ENTRY(jboolean, Unsafe_CompareAndSwapInt(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jint e, jint x)) | |
| 1197 UnsafeWrapper("Unsafe_CompareAndSwapInt"); | |
| 1198 oop p = JNIHandles::resolve(obj); | |
| 1199 jint* addr = (jint *) index_oop_from_field_offset_long(p, offset); | |
| 1200 return (jint)(Atomic::cmpxchg(x, addr, e)) == e; | |
| 1201 UNSAFE_END | |
| 1202 | |
| 1203 UNSAFE_ENTRY(jboolean, Unsafe_CompareAndSwapLong(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jlong e, jlong x)) | |
| 1204 UnsafeWrapper("Unsafe_CompareAndSwapLong"); | |
| 1205 Handle p (THREAD, JNIHandles::resolve(obj)); | |
| 1206 jlong* addr = (jlong*)(index_oop_from_field_offset_long(p(), offset)); | |
| 1207 if (VM_Version::supports_cx8()) | |
| 1208 return (jlong)(Atomic::cmpxchg(x, addr, e)) == e; | |
| 1209 else { | |
| 1210 jboolean success = false; | |
| 1211 ObjectLocker ol(p, THREAD); | |
| 1212 if (*addr == e) { *addr = x; success = true; } | |
| 1213 return success; | |
| 1214 } | |
| 1215 UNSAFE_END | |
| 1216 | |
| 1217 UNSAFE_ENTRY(void, Unsafe_Park(JNIEnv *env, jobject unsafe, jboolean isAbsolute, jlong time)) | |
| 1218 UnsafeWrapper("Unsafe_Park"); | |
| 10405 | 1219 EventThreadPark event; |
| 4006 | 1220 #ifndef USDT2 |
|
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1221 HS_DTRACE_PROBE3(hotspot, thread__park__begin, thread->parker(), (int) isAbsolute, time); |
| 4006 | 1222 #else /* USDT2 */ |
| 1223 HOTSPOT_THREAD_PARK_BEGIN( | |
| 1224 (uintptr_t) thread->parker(), (int) isAbsolute, time); | |
| 1225 #endif /* USDT2 */ | |
| 0 | 1226 JavaThreadParkedState jtps(thread, time != 0); |
| 1227 thread->parker()->park(isAbsolute != 0, time); | |
| 4006 | 1228 #ifndef USDT2 |
|
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1229 HS_DTRACE_PROBE1(hotspot, thread__park__end, thread->parker()); |
| 4006 | 1230 #else /* USDT2 */ |
| 1231 HOTSPOT_THREAD_PARK_END( | |
| 1232 (uintptr_t) thread->parker()); | |
| 1233 #endif /* USDT2 */ | |
| 10405 | 1234 if (event.should_commit()) { |
| 1235 oop obj = thread->current_park_blocker(); | |
|
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1236 event.set_klass((obj != NULL) ? obj->klass() : NULL); |
| 10405 | 1237 event.set_timeout(time); |
|
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1238 event.set_address((obj != NULL) ? (TYPE_ADDRESS) cast_from_oop<uintptr_t>(obj) : 0); |
| 10405 | 1239 event.commit(); |
| 1240 } | |
| 0 | 1241 UNSAFE_END |
| 1242 | |
| 1243 UNSAFE_ENTRY(void, Unsafe_Unpark(JNIEnv *env, jobject unsafe, jobject jthread)) | |
| 1244 UnsafeWrapper("Unsafe_Unpark"); | |
| 1245 Parker* p = NULL; | |
| 1246 if (jthread != NULL) { | |
| 1247 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 1248 if (java_thread != NULL) { | |
| 1249 jlong lp = java_lang_Thread::park_event(java_thread); | |
| 1250 if (lp != 0) { | |
| 1251 // This cast is OK even though the jlong might have been read | |
| 1252 // non-atomically on 32bit systems, since there, one word will | |
| 1253 // always be zero anyway and the value set is always the same | |
| 1254 p = (Parker*)addr_from_java(lp); | |
| 1255 } else { | |
| 1256 // Grab lock if apparently null or using older version of library | |
| 1257 MutexLocker mu(Threads_lock); | |
| 1258 java_thread = JNIHandles::resolve_non_null(jthread); | |
| 1259 if (java_thread != NULL) { | |
| 1260 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 1261 if (thr != NULL) { | |
| 1262 p = thr->parker(); | |
| 1263 if (p != NULL) { // Bind to Java thread for next time. | |
| 1264 java_lang_Thread::set_park_event(java_thread, addr_to_java(p)); | |
| 1265 } | |
| 1266 } | |
| 1267 } | |
| 1268 } | |
| 1269 } | |
| 1270 } | |
| 1271 if (p != NULL) { | |
| 4006 | 1272 #ifndef USDT2 |
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1273 HS_DTRACE_PROBE1(hotspot, thread__unpark, p); |
| 4006 | 1274 #else /* USDT2 */ |
| 1275 HOTSPOT_THREAD_UNPARK( | |
| 1276 (uintptr_t) p); | |
| 1277 #endif /* USDT2 */ | |
| 0 | 1278 p->unpark(); |
| 1279 } | |
| 1280 UNSAFE_END | |
| 1281 | |
| 1282 UNSAFE_ENTRY(jint, Unsafe_Loadavg(JNIEnv *env, jobject unsafe, jdoubleArray loadavg, jint nelem)) | |
| 1283 UnsafeWrapper("Unsafe_Loadavg"); | |
| 1284 const int max_nelem = 3; | |
| 1285 double la[max_nelem]; | |
| 1286 jint ret; | |
| 1287 | |
| 1288 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(loadavg)); | |
| 1289 assert(a->is_typeArray(), "must be type array"); | |
| 1290 | |
| 1291 if (nelem < 0 || nelem > max_nelem || a->length() < nelem) { | |
| 1292 ThreadToNativeFromVM ttnfv(thread); | |
| 1293 throw_new(env, "ArrayIndexOutOfBoundsException"); | |
| 1294 return -1; | |
| 1295 } | |
| 1296 | |
| 1297 ret = os::loadavg(la, nelem); | |
| 1298 if (ret == -1) return -1; | |
| 1299 | |
| 1300 // if successful, ret is the number of samples actually retrieved. | |
| 1301 assert(ret >= 0 && ret <= max_nelem, "Unexpected loadavg return value"); | |
| 1302 switch(ret) { | |
| 1303 case 3: a->double_at_put(2, (jdouble)la[2]); // fall through | |
| 1304 case 2: a->double_at_put(1, (jdouble)la[1]); // fall through | |
| 1305 case 1: a->double_at_put(0, (jdouble)la[0]); break; | |
| 1306 } | |
| 1307 return ret; | |
| 1308 UNSAFE_END | |
| 1309 | |
| 1310 UNSAFE_ENTRY(void, Unsafe_PrefetchRead(JNIEnv* env, jclass ignored, jobject obj, jlong offset)) | |
| 1311 UnsafeWrapper("Unsafe_PrefetchRead"); | |
| 1312 oop p = JNIHandles::resolve(obj); | |
| 1313 void* addr = index_oop_from_field_offset_long(p, 0); | |
| 1314 Prefetch::read(addr, (intx)offset); | |
| 1315 UNSAFE_END | |
| 1316 | |
| 1317 UNSAFE_ENTRY(void, Unsafe_PrefetchWrite(JNIEnv* env, jclass ignored, jobject obj, jlong offset)) | |
| 1318 UnsafeWrapper("Unsafe_PrefetchWrite"); | |
| 1319 oop p = JNIHandles::resolve(obj); | |
| 1320 void* addr = index_oop_from_field_offset_long(p, 0); | |
| 1321 Prefetch::write(addr, (intx)offset); | |
| 1322 UNSAFE_END | |
| 1323 | |
| 1324 | |
| 1325 /// JVM_RegisterUnsafeMethods | |
| 1326 | |
| 1327 #define ADR "J" | |
| 1328 | |
| 1329 #define LANG "Ljava/lang/" | |
| 1330 | |
| 1331 #define OBJ LANG"Object;" | |
| 1332 #define CLS LANG"Class;" | |
| 1333 #define CTR LANG"reflect/Constructor;" | |
| 1334 #define FLD LANG"reflect/Field;" | |
| 1335 #define MTH LANG"reflect/Method;" | |
| 1336 #define THR LANG"Throwable;" | |
| 1337 | |
| 1338 #define DC0_Args LANG"String;[BII" | |
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1339 #define DC_Args DC0_Args LANG"ClassLoader;" "Ljava/security/ProtectionDomain;" |
| 0 | 1340 |
| 1341 #define CC (char*) /*cast a literal from (const char*)*/ | |
| 1342 #define FN_PTR(f) CAST_FROM_FN_PTR(void*, &f) | |
| 1343 | |
| 1344 // define deprecated accessors for compabitility with 1.4.0 | |
| 1345 #define DECLARE_GETSETOOP_140(Boolean, Z) \ | |
| 1346 {CC"get"#Boolean, CC"("OBJ"I)"#Z, FN_PTR(Unsafe_Get##Boolean##140)}, \ | |
| 1347 {CC"put"#Boolean, CC"("OBJ"I"#Z")V", FN_PTR(Unsafe_Set##Boolean##140)} | |
| 1348 | |
| 1349 // Note: In 1.4.1, getObject and kin take both int and long offsets. | |
| 1350 #define DECLARE_GETSETOOP_141(Boolean, Z) \ | |
| 1351 {CC"get"#Boolean, CC"("OBJ"J)"#Z, FN_PTR(Unsafe_Get##Boolean)}, \ | |
| 1352 {CC"put"#Boolean, CC"("OBJ"J"#Z")V", FN_PTR(Unsafe_Set##Boolean)} | |
| 1353 | |
| 1354 // Note: In 1.5.0, there are volatile versions too | |
| 1355 #define DECLARE_GETSETOOP(Boolean, Z) \ | |
| 1356 {CC"get"#Boolean, CC"("OBJ"J)"#Z, FN_PTR(Unsafe_Get##Boolean)}, \ | |
| 1357 {CC"put"#Boolean, CC"("OBJ"J"#Z")V", FN_PTR(Unsafe_Set##Boolean)}, \ | |
| 1358 {CC"get"#Boolean"Volatile", CC"("OBJ"J)"#Z, FN_PTR(Unsafe_Get##Boolean##Volatile)}, \ | |
| 1359 {CC"put"#Boolean"Volatile", CC"("OBJ"J"#Z")V", FN_PTR(Unsafe_Set##Boolean##Volatile)} | |
| 1360 | |
| 1361 | |
| 1362 #define DECLARE_GETSETNATIVE(Byte, B) \ | |
| 1363 {CC"get"#Byte, CC"("ADR")"#B, FN_PTR(Unsafe_GetNative##Byte)}, \ | |
| 1364 {CC"put"#Byte, CC"("ADR#B")V", FN_PTR(Unsafe_SetNative##Byte)} | |
| 1365 | |
| 1366 | |
| 1367 | |
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1368 // These are the methods for 1.4.0 |
| 0 | 1369 static JNINativeMethod methods_140[] = { |
| 1370 {CC"getObject", CC"("OBJ"I)"OBJ"", FN_PTR(Unsafe_GetObject140)}, | |
| 1371 {CC"putObject", CC"("OBJ"I"OBJ")V", FN_PTR(Unsafe_SetObject140)}, | |
| 1372 | |
| 1373 DECLARE_GETSETOOP_140(Boolean, Z), | |
| 1374 DECLARE_GETSETOOP_140(Byte, B), | |
| 1375 DECLARE_GETSETOOP_140(Short, S), | |
| 1376 DECLARE_GETSETOOP_140(Char, C), | |
| 1377 DECLARE_GETSETOOP_140(Int, I), | |
| 1378 DECLARE_GETSETOOP_140(Long, J), | |
| 1379 DECLARE_GETSETOOP_140(Float, F), | |
| 1380 DECLARE_GETSETOOP_140(Double, D), | |
| 1381 | |
| 1382 DECLARE_GETSETNATIVE(Byte, B), | |
| 1383 DECLARE_GETSETNATIVE(Short, S), | |
| 1384 DECLARE_GETSETNATIVE(Char, C), | |
| 1385 DECLARE_GETSETNATIVE(Int, I), | |
| 1386 DECLARE_GETSETNATIVE(Long, J), | |
| 1387 DECLARE_GETSETNATIVE(Float, F), | |
| 1388 DECLARE_GETSETNATIVE(Double, D), | |
| 1389 | |
| 1390 {CC"getAddress", CC"("ADR")"ADR, FN_PTR(Unsafe_GetNativeAddress)}, | |
| 1391 {CC"putAddress", CC"("ADR""ADR")V", FN_PTR(Unsafe_SetNativeAddress)}, | |
| 1392 | |
| 1393 {CC"allocateMemory", CC"(J)"ADR, FN_PTR(Unsafe_AllocateMemory)}, | |
| 1394 {CC"reallocateMemory", CC"("ADR"J)"ADR, FN_PTR(Unsafe_ReallocateMemory)}, | |
| 1395 {CC"freeMemory", CC"("ADR")V", FN_PTR(Unsafe_FreeMemory)}, | |
| 1396 | |
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1397 {CC"fieldOffset", CC"("FLD")I", FN_PTR(Unsafe_FieldOffset)}, |
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1398 {CC"staticFieldBase", CC"("CLS")"OBJ, FN_PTR(Unsafe_StaticFieldBaseFromClass)}, |
| 0 | 1399 {CC"ensureClassInitialized",CC"("CLS")V", FN_PTR(Unsafe_EnsureClassInitialized)}, |
| 1400 {CC"arrayBaseOffset", CC"("CLS")I", FN_PTR(Unsafe_ArrayBaseOffset)}, | |
| 1401 {CC"arrayIndexScale", CC"("CLS")I", FN_PTR(Unsafe_ArrayIndexScale)}, | |
| 1402 {CC"addressSize", CC"()I", FN_PTR(Unsafe_AddressSize)}, | |
| 1403 {CC"pageSize", CC"()I", FN_PTR(Unsafe_PageSize)}, | |
| 1404 | |
| 1405 {CC"defineClass", CC"("DC0_Args")"CLS, FN_PTR(Unsafe_DefineClass0)}, | |
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1406 {CC"defineClass", CC"("DC_Args")"CLS, FN_PTR(Unsafe_DefineClass)}, |
| 0 | 1407 {CC"allocateInstance", CC"("CLS")"OBJ, FN_PTR(Unsafe_AllocateInstance)}, |
| 1408 {CC"monitorEnter", CC"("OBJ")V", FN_PTR(Unsafe_MonitorEnter)}, | |
| 1409 {CC"monitorExit", CC"("OBJ")V", FN_PTR(Unsafe_MonitorExit)}, | |
| 1410 {CC"throwException", CC"("THR")V", FN_PTR(Unsafe_ThrowException)} | |
| 1411 }; | |
| 1412 | |
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1413 // These are the methods prior to the JSR 166 changes in 1.5.0 |
| 0 | 1414 static JNINativeMethod methods_141[] = { |
| 1415 {CC"getObject", CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObject)}, | |
| 1416 {CC"putObject", CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObject)}, | |
| 1417 | |
| 1418 DECLARE_GETSETOOP_141(Boolean, Z), | |
| 1419 DECLARE_GETSETOOP_141(Byte, B), | |
| 1420 DECLARE_GETSETOOP_141(Short, S), | |
| 1421 DECLARE_GETSETOOP_141(Char, C), | |
| 1422 DECLARE_GETSETOOP_141(Int, I), | |
| 1423 DECLARE_GETSETOOP_141(Long, J), | |
| 1424 DECLARE_GETSETOOP_141(Float, F), | |
| 1425 DECLARE_GETSETOOP_141(Double, D), | |
| 1426 | |
| 1427 DECLARE_GETSETNATIVE(Byte, B), | |
| 1428 DECLARE_GETSETNATIVE(Short, S), | |
| 1429 DECLARE_GETSETNATIVE(Char, C), | |
| 1430 DECLARE_GETSETNATIVE(Int, I), | |
| 1431 DECLARE_GETSETNATIVE(Long, J), | |
| 1432 DECLARE_GETSETNATIVE(Float, F), | |
| 1433 DECLARE_GETSETNATIVE(Double, D), | |
| 1434 | |
| 1435 {CC"getAddress", CC"("ADR")"ADR, FN_PTR(Unsafe_GetNativeAddress)}, | |
| 1436 {CC"putAddress", CC"("ADR""ADR")V", FN_PTR(Unsafe_SetNativeAddress)}, | |
| 1437 | |
| 1438 {CC"allocateMemory", CC"(J)"ADR, FN_PTR(Unsafe_AllocateMemory)}, | |
| 1439 {CC"reallocateMemory", CC"("ADR"J)"ADR, FN_PTR(Unsafe_ReallocateMemory)}, | |
| 1440 {CC"freeMemory", CC"("ADR")V", FN_PTR(Unsafe_FreeMemory)}, | |
| 1441 | |
| 1442 {CC"objectFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_ObjectFieldOffset)}, | |
| 1443 {CC"staticFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_StaticFieldOffset)}, | |
| 1444 {CC"staticFieldBase", CC"("FLD")"OBJ, FN_PTR(Unsafe_StaticFieldBaseFromField)}, | |
| 1445 {CC"ensureClassInitialized",CC"("CLS")V", FN_PTR(Unsafe_EnsureClassInitialized)}, | |
| 1446 {CC"arrayBaseOffset", CC"("CLS")I", FN_PTR(Unsafe_ArrayBaseOffset)}, | |
| 1447 {CC"arrayIndexScale", CC"("CLS")I", FN_PTR(Unsafe_ArrayIndexScale)}, | |
| 1448 {CC"addressSize", CC"()I", FN_PTR(Unsafe_AddressSize)}, | |
| 1449 {CC"pageSize", CC"()I", FN_PTR(Unsafe_PageSize)}, | |
| 1450 | |
| 1451 {CC"defineClass", CC"("DC0_Args")"CLS, FN_PTR(Unsafe_DefineClass0)}, | |
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1452 {CC"defineClass", CC"("DC_Args")"CLS, FN_PTR(Unsafe_DefineClass)}, |
| 0 | 1453 {CC"allocateInstance", CC"("CLS")"OBJ, FN_PTR(Unsafe_AllocateInstance)}, |
| 1454 {CC"monitorEnter", CC"("OBJ")V", FN_PTR(Unsafe_MonitorEnter)}, | |
| 1455 {CC"monitorExit", CC"("OBJ")V", FN_PTR(Unsafe_MonitorExit)}, | |
| 1456 {CC"throwException", CC"("THR")V", FN_PTR(Unsafe_ThrowException)} | |
| 1457 | |
| 1458 }; | |
| 1459 | |
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1460 // These are the methods prior to the JSR 166 changes in 1.6.0 |
| 0 | 1461 static JNINativeMethod methods_15[] = { |
| 1462 {CC"getObject", CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObject)}, | |
| 1463 {CC"putObject", CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObject)}, | |
| 1464 {CC"getObjectVolatile",CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObjectVolatile)}, | |
| 1465 {CC"putObjectVolatile",CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObjectVolatile)}, | |
| 1466 | |
| 1467 | |
| 1468 DECLARE_GETSETOOP(Boolean, Z), | |
| 1469 DECLARE_GETSETOOP(Byte, B), | |
| 1470 DECLARE_GETSETOOP(Short, S), | |
| 1471 DECLARE_GETSETOOP(Char, C), | |
| 1472 DECLARE_GETSETOOP(Int, I), | |
| 1473 DECLARE_GETSETOOP(Long, J), | |
| 1474 DECLARE_GETSETOOP(Float, F), | |
| 1475 DECLARE_GETSETOOP(Double, D), | |
| 1476 | |
| 1477 DECLARE_GETSETNATIVE(Byte, B), | |
| 1478 DECLARE_GETSETNATIVE(Short, S), | |
| 1479 DECLARE_GETSETNATIVE(Char, C), | |
| 1480 DECLARE_GETSETNATIVE(Int, I), | |
| 1481 DECLARE_GETSETNATIVE(Long, J), | |
| 1482 DECLARE_GETSETNATIVE(Float, F), | |
| 1483 DECLARE_GETSETNATIVE(Double, D), | |
| 1484 | |
| 1485 {CC"getAddress", CC"("ADR")"ADR, FN_PTR(Unsafe_GetNativeAddress)}, | |
| 1486 {CC"putAddress", CC"("ADR""ADR")V", FN_PTR(Unsafe_SetNativeAddress)}, | |
| 1487 | |
| 1488 {CC"allocateMemory", CC"(J)"ADR, FN_PTR(Unsafe_AllocateMemory)}, | |
| 1489 {CC"reallocateMemory", CC"("ADR"J)"ADR, FN_PTR(Unsafe_ReallocateMemory)}, | |
| 1490 {CC"freeMemory", CC"("ADR")V", FN_PTR(Unsafe_FreeMemory)}, | |
| 1491 | |
| 1492 {CC"objectFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_ObjectFieldOffset)}, | |
| 1493 {CC"staticFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_StaticFieldOffset)}, | |
| 1494 {CC"staticFieldBase", CC"("FLD")"OBJ, FN_PTR(Unsafe_StaticFieldBaseFromField)}, | |
| 1495 {CC"ensureClassInitialized",CC"("CLS")V", FN_PTR(Unsafe_EnsureClassInitialized)}, | |
| 1496 {CC"arrayBaseOffset", CC"("CLS")I", FN_PTR(Unsafe_ArrayBaseOffset)}, | |
| 1497 {CC"arrayIndexScale", CC"("CLS")I", FN_PTR(Unsafe_ArrayIndexScale)}, | |
| 1498 {CC"addressSize", CC"()I", FN_PTR(Unsafe_AddressSize)}, | |
| 1499 {CC"pageSize", CC"()I", FN_PTR(Unsafe_PageSize)}, | |
| 1500 | |
| 1501 {CC"defineClass", CC"("DC0_Args")"CLS, FN_PTR(Unsafe_DefineClass0)}, | |
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1502 {CC"defineClass", CC"("DC_Args")"CLS, FN_PTR(Unsafe_DefineClass)}, |
| 0 | 1503 {CC"allocateInstance", CC"("CLS")"OBJ, FN_PTR(Unsafe_AllocateInstance)}, |
| 1504 {CC"monitorEnter", CC"("OBJ")V", FN_PTR(Unsafe_MonitorEnter)}, | |
| 1505 {CC"monitorExit", CC"("OBJ")V", FN_PTR(Unsafe_MonitorExit)}, | |
| 1506 {CC"throwException", CC"("THR")V", FN_PTR(Unsafe_ThrowException)}, | |
| 1507 {CC"compareAndSwapObject", CC"("OBJ"J"OBJ""OBJ")Z", FN_PTR(Unsafe_CompareAndSwapObject)}, | |
| 1508 {CC"compareAndSwapInt", CC"("OBJ"J""I""I"")Z", FN_PTR(Unsafe_CompareAndSwapInt)}, | |
| 1509 {CC"compareAndSwapLong", CC"("OBJ"J""J""J"")Z", FN_PTR(Unsafe_CompareAndSwapLong)}, | |
| 1510 {CC"park", CC"(ZJ)V", FN_PTR(Unsafe_Park)}, | |
| 1511 {CC"unpark", CC"("OBJ")V", FN_PTR(Unsafe_Unpark)} | |
| 1512 | |
| 1513 }; | |
| 1514 | |
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1515 // These are the methods for 1.6.0 and 1.7.0 |
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1516 static JNINativeMethod methods_16[] = { |
| 0 | 1517 {CC"getObject", CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObject)}, |
| 1518 {CC"putObject", CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObject)}, | |
| 1519 {CC"getObjectVolatile",CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObjectVolatile)}, | |
| 1520 {CC"putObjectVolatile",CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObjectVolatile)}, | |
| 1521 | |
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1522 DECLARE_GETSETOOP(Boolean, Z), |
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1523 DECLARE_GETSETOOP(Byte, B), |
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1524 DECLARE_GETSETOOP(Short, S), |
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1525 DECLARE_GETSETOOP(Char, C), |
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1526 DECLARE_GETSETOOP(Int, I), |
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1527 DECLARE_GETSETOOP(Long, J), |
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1528 DECLARE_GETSETOOP(Float, F), |
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1529 DECLARE_GETSETOOP(Double, D), |
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1530 |
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1531 DECLARE_GETSETNATIVE(Byte, B), |
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1532 DECLARE_GETSETNATIVE(Short, S), |
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1533 DECLARE_GETSETNATIVE(Char, C), |
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1534 DECLARE_GETSETNATIVE(Int, I), |
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1535 DECLARE_GETSETNATIVE(Long, J), |
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1536 DECLARE_GETSETNATIVE(Float, F), |
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1537 DECLARE_GETSETNATIVE(Double, D), |
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1538 |
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1539 {CC"getAddress", CC"("ADR")"ADR, FN_PTR(Unsafe_GetNativeAddress)}, |
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1540 {CC"putAddress", CC"("ADR""ADR")V", FN_PTR(Unsafe_SetNativeAddress)}, |
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1541 |
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1542 {CC"allocateMemory", CC"(J)"ADR, FN_PTR(Unsafe_AllocateMemory)}, |
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1543 {CC"reallocateMemory", CC"("ADR"J)"ADR, FN_PTR(Unsafe_ReallocateMemory)}, |
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1544 {CC"freeMemory", CC"("ADR")V", FN_PTR(Unsafe_FreeMemory)}, |
|
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1545 |
|
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1546 {CC"objectFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_ObjectFieldOffset)}, |
|
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1547 {CC"staticFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_StaticFieldOffset)}, |
|
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1548 {CC"staticFieldBase", CC"("FLD")"OBJ, FN_PTR(Unsafe_StaticFieldBaseFromField)}, |
|
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1549 {CC"ensureClassInitialized",CC"("CLS")V", FN_PTR(Unsafe_EnsureClassInitialized)}, |
|
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1550 {CC"arrayBaseOffset", CC"("CLS")I", FN_PTR(Unsafe_ArrayBaseOffset)}, |
|
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1551 {CC"arrayIndexScale", CC"("CLS")I", FN_PTR(Unsafe_ArrayIndexScale)}, |
|
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1552 {CC"addressSize", CC"()I", FN_PTR(Unsafe_AddressSize)}, |
|
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1553 {CC"pageSize", CC"()I", FN_PTR(Unsafe_PageSize)}, |
|
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1554 |
|
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1555 {CC"defineClass", CC"("DC0_Args")"CLS, FN_PTR(Unsafe_DefineClass0)}, |
|
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1556 {CC"defineClass", CC"("DC_Args")"CLS, FN_PTR(Unsafe_DefineClass)}, |
|
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1557 {CC"allocateInstance", CC"("CLS")"OBJ, FN_PTR(Unsafe_AllocateInstance)}, |
|
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1558 {CC"monitorEnter", CC"("OBJ")V", FN_PTR(Unsafe_MonitorEnter)}, |
|
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1559 {CC"monitorExit", CC"("OBJ")V", FN_PTR(Unsafe_MonitorExit)}, |
|
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1560 {CC"tryMonitorEnter", CC"("OBJ")Z", FN_PTR(Unsafe_TryMonitorEnter)}, |
|
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1561 {CC"throwException", CC"("THR")V", FN_PTR(Unsafe_ThrowException)}, |
|
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1562 {CC"compareAndSwapObject", CC"("OBJ"J"OBJ""OBJ")Z", FN_PTR(Unsafe_CompareAndSwapObject)}, |
|
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1563 {CC"compareAndSwapInt", CC"("OBJ"J""I""I"")Z", FN_PTR(Unsafe_CompareAndSwapInt)}, |
|
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1564 {CC"compareAndSwapLong", CC"("OBJ"J""J""J"")Z", FN_PTR(Unsafe_CompareAndSwapLong)}, |
|
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1565 {CC"putOrderedObject", CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetOrderedObject)}, |
|
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1566 {CC"putOrderedInt", CC"("OBJ"JI)V", FN_PTR(Unsafe_SetOrderedInt)}, |
|
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1567 {CC"putOrderedLong", CC"("OBJ"JJ)V", FN_PTR(Unsafe_SetOrderedLong)}, |
|
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1568 {CC"park", CC"(ZJ)V", FN_PTR(Unsafe_Park)}, |
|
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1569 {CC"unpark", CC"("OBJ")V", FN_PTR(Unsafe_Unpark)} |
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1570 }; |
|
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1571 |
|
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1572 // These are the methods for 1.8.0 |
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1573 static JNINativeMethod methods_18[] = { |
|
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1574 {CC"getObject", CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObject)}, |
|
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1575 {CC"putObject", CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObject)}, |
|
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1576 {CC"getObjectVolatile",CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObjectVolatile)}, |
|
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1577 {CC"putObjectVolatile",CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObjectVolatile)}, |
| 0 | 1578 |
| 1579 DECLARE_GETSETOOP(Boolean, Z), | |
| 1580 DECLARE_GETSETOOP(Byte, B), | |
| 1581 DECLARE_GETSETOOP(Short, S), | |
| 1582 DECLARE_GETSETOOP(Char, C), | |
| 1583 DECLARE_GETSETOOP(Int, I), | |
| 1584 DECLARE_GETSETOOP(Long, J), | |
| 1585 DECLARE_GETSETOOP(Float, F), | |
| 1586 DECLARE_GETSETOOP(Double, D), | |
| 1587 | |
| 1588 DECLARE_GETSETNATIVE(Byte, B), | |
| 1589 DECLARE_GETSETNATIVE(Short, S), | |
| 1590 DECLARE_GETSETNATIVE(Char, C), | |
| 1591 DECLARE_GETSETNATIVE(Int, I), | |
| 1592 DECLARE_GETSETNATIVE(Long, J), | |
| 1593 DECLARE_GETSETNATIVE(Float, F), | |
| 1594 DECLARE_GETSETNATIVE(Double, D), | |
| 1595 | |
| 1596 {CC"getAddress", CC"("ADR")"ADR, FN_PTR(Unsafe_GetNativeAddress)}, | |
| 1597 {CC"putAddress", CC"("ADR""ADR")V", FN_PTR(Unsafe_SetNativeAddress)}, | |
| 1598 | |
| 1599 {CC"allocateMemory", CC"(J)"ADR, FN_PTR(Unsafe_AllocateMemory)}, | |
| 1600 {CC"reallocateMemory", CC"("ADR"J)"ADR, FN_PTR(Unsafe_ReallocateMemory)}, | |
| 1601 {CC"freeMemory", CC"("ADR")V", FN_PTR(Unsafe_FreeMemory)}, | |
| 1602 | |
| 1603 {CC"objectFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_ObjectFieldOffset)}, | |
| 1604 {CC"staticFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_StaticFieldOffset)}, | |
| 1605 {CC"staticFieldBase", CC"("FLD")"OBJ, FN_PTR(Unsafe_StaticFieldBaseFromField)}, | |
| 1606 {CC"ensureClassInitialized",CC"("CLS")V", FN_PTR(Unsafe_EnsureClassInitialized)}, | |
| 1607 {CC"arrayBaseOffset", CC"("CLS")I", FN_PTR(Unsafe_ArrayBaseOffset)}, | |
| 1608 {CC"arrayIndexScale", CC"("CLS")I", FN_PTR(Unsafe_ArrayIndexScale)}, | |
| 1609 {CC"addressSize", CC"()I", FN_PTR(Unsafe_AddressSize)}, | |
| 1610 {CC"pageSize", CC"()I", FN_PTR(Unsafe_PageSize)}, | |
| 1611 | |
|
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1612 {CC"defineClass", CC"("DC_Args")"CLS, FN_PTR(Unsafe_DefineClass)}, |
| 0 | 1613 {CC"allocateInstance", CC"("CLS")"OBJ, FN_PTR(Unsafe_AllocateInstance)}, |
| 1614 {CC"monitorEnter", CC"("OBJ")V", FN_PTR(Unsafe_MonitorEnter)}, | |
| 1615 {CC"monitorExit", CC"("OBJ")V", FN_PTR(Unsafe_MonitorExit)}, | |
| 1616 {CC"tryMonitorEnter", CC"("OBJ")Z", FN_PTR(Unsafe_TryMonitorEnter)}, | |
| 1617 {CC"throwException", CC"("THR")V", FN_PTR(Unsafe_ThrowException)}, | |
| 1618 {CC"compareAndSwapObject", CC"("OBJ"J"OBJ""OBJ")Z", FN_PTR(Unsafe_CompareAndSwapObject)}, | |
| 1619 {CC"compareAndSwapInt", CC"("OBJ"J""I""I"")Z", FN_PTR(Unsafe_CompareAndSwapInt)}, | |
| 1620 {CC"compareAndSwapLong", CC"("OBJ"J""J""J"")Z", FN_PTR(Unsafe_CompareAndSwapLong)}, | |
| 1621 {CC"putOrderedObject", CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetOrderedObject)}, | |
| 1622 {CC"putOrderedInt", CC"("OBJ"JI)V", FN_PTR(Unsafe_SetOrderedInt)}, | |
| 1623 {CC"putOrderedLong", CC"("OBJ"JJ)V", FN_PTR(Unsafe_SetOrderedLong)}, | |
| 1624 {CC"park", CC"(ZJ)V", FN_PTR(Unsafe_Park)}, | |
| 1625 {CC"unpark", CC"("OBJ")V", FN_PTR(Unsafe_Unpark)} | |
| 1626 }; | |
| 1627 | |
| 1628 JNINativeMethod loadavg_method[] = { | |
|
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1629 {CC"getLoadAverage", CC"([DI)I", FN_PTR(Unsafe_Loadavg)} |
| 0 | 1630 }; |
| 1631 | |
| 1632 JNINativeMethod prefetch_methods[] = { | |
| 1633 {CC"prefetchRead", CC"("OBJ"J)V", FN_PTR(Unsafe_PrefetchRead)}, | |
| 1634 {CC"prefetchWrite", CC"("OBJ"J)V", FN_PTR(Unsafe_PrefetchWrite)}, | |
| 1635 {CC"prefetchReadStatic", CC"("OBJ"J)V", FN_PTR(Unsafe_PrefetchRead)}, | |
| 1636 {CC"prefetchWriteStatic",CC"("OBJ"J)V", FN_PTR(Unsafe_PrefetchWrite)} | |
| 1637 }; | |
| 1638 | |
|
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1639 JNINativeMethod memcopy_methods_17[] = { |
| 0 | 1640 {CC"copyMemory", CC"("OBJ"J"OBJ"JJ)V", FN_PTR(Unsafe_CopyMemory2)}, |
| 1641 {CC"setMemory", CC"("OBJ"JJB)V", FN_PTR(Unsafe_SetMemory2)} | |
| 1642 }; | |
| 1643 | |
| 1644 JNINativeMethod memcopy_methods_15[] = { | |
| 1645 {CC"setMemory", CC"("ADR"JB)V", FN_PTR(Unsafe_SetMemory)}, | |
| 1646 {CC"copyMemory", CC"("ADR ADR"J)V", FN_PTR(Unsafe_CopyMemory)} | |
| 1647 }; | |
| 1648 | |
|
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1649 JNINativeMethod anonk_methods[] = { |
|
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1650 {CC"defineAnonymousClass", CC"("DAC_Args")"CLS, FN_PTR(Unsafe_DefineAnonymousClass)}, |
|
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1651 }; |
| 0 | 1652 |
|
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1653 JNINativeMethod lform_methods[] = { |
|
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1654 {CC"shouldBeInitialized",CC"("CLS")Z", FN_PTR(Unsafe_ShouldBeInitialized)}, |
|
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1655 }; |
|
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1656 |
|
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|
1657 JNINativeMethod fence_methods[] = { |
|
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1658 {CC"loadFence", CC"()V", FN_PTR(Unsafe_LoadFence)}, |
|
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1659 {CC"storeFence", CC"()V", FN_PTR(Unsafe_StoreFence)}, |
|
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1660 {CC"fullFence", CC"()V", FN_PTR(Unsafe_FullFence)}, |
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1661 }; |
|
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|
1662 |
| 0 | 1663 #undef CC |
| 1664 #undef FN_PTR | |
| 1665 | |
| 1666 #undef ADR | |
| 1667 #undef LANG | |
| 1668 #undef OBJ | |
| 1669 #undef CLS | |
| 1670 #undef CTR | |
| 1671 #undef FLD | |
| 1672 #undef MTH | |
| 1673 #undef THR | |
| 1674 #undef DC0_Args | |
|
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1675 #undef DC_Args |
| 0 | 1676 |
| 1677 #undef DECLARE_GETSETOOP | |
| 1678 #undef DECLARE_GETSETNATIVE | |
| 1679 | |
| 1680 | |
|
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|
1681 /** |
|
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1682 * Helper method to register native methods. |
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1683 */ |
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1684 static bool register_natives(const char* message, JNIEnv* env, jclass clazz, const JNINativeMethod* methods, jint nMethods) { |
|
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1685 int status = env->RegisterNatives(clazz, methods, nMethods); |
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1686 if (status < 0 || env->ExceptionOccurred()) { |
|
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1687 if (PrintMiscellaneous && (Verbose || WizardMode)) { |
|
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1688 tty->print_cr("Unsafe: failed registering %s", message); |
|
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1689 } |
|
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1690 env->ExceptionClear(); |
|
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|
1691 return false; |
|
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1692 } else { |
|
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1693 if (PrintMiscellaneous && (Verbose || WizardMode)) { |
|
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1694 tty->print_cr("Unsafe: successfully registered %s", message); |
|
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1695 } |
|
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1696 return true; |
|
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|
1697 } |
|
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|
1698 } |
|
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1699 |
|
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1700 |
| 0 | 1701 // This one function is exported, used by NativeLookup. |
| 1702 // The Unsafe_xxx functions above are called only from the interpreter. | |
| 1703 // The optimizer looks at names and signatures to recognize | |
| 1704 // individual functions. | |
| 1705 | |
| 1706 JVM_ENTRY(void, JVM_RegisterUnsafeMethods(JNIEnv *env, jclass unsafecls)) | |
| 1707 UnsafeWrapper("JVM_RegisterUnsafeMethods"); | |
| 1708 { | |
| 1709 ThreadToNativeFromVM ttnfv(thread); | |
|
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1710 |
|
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1711 // Unsafe methods |
| 0 | 1712 { |
|
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1713 bool success = false; |
|
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1714 // 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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1715 if (!success) { |
|
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1716 success = register_natives("1.6 methods", env, unsafecls, methods_16, sizeof(methods_16)/sizeof(JNINativeMethod)); |
|
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1717 } |
|
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1718 if (!success) { |
|
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1719 success = register_natives("1.8 methods", env, unsafecls, methods_18, sizeof(methods_18)/sizeof(JNINativeMethod)); |
|
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1720 } |
|
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1721 if (!success) { |
|
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1722 success = register_natives("1.5 methods", env, unsafecls, methods_15, sizeof(methods_15)/sizeof(JNINativeMethod)); |
|
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1723 } |
|
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1724 if (!success) { |
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1725 success = register_natives("1.4.1 methods", env, unsafecls, methods_141, sizeof(methods_141)/sizeof(JNINativeMethod)); |
| 0 | 1726 } |
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1727 if (!success) { |
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1728 success = register_natives("1.4.0 methods", env, unsafecls, methods_140, sizeof(methods_140)/sizeof(JNINativeMethod)); |
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1729 } |
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1730 guarantee(success, "register unsafe natives"); |
| 0 | 1731 } |
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1732 |
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1733 // Unsafe.getLoadAverage |
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1734 register_natives("1.6 loadavg method", env, unsafecls, loadavg_method, sizeof(loadavg_method)/sizeof(JNINativeMethod)); |
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1735 |
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1736 // Prefetch methods |
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1737 register_natives("1.6 prefetch methods", env, unsafecls, prefetch_methods, sizeof(prefetch_methods)/sizeof(JNINativeMethod)); |
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1738 |
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1739 // Memory copy methods |
| 0 | 1740 { |
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1741 bool success = false; |
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1742 if (!success) { |
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1743 success = register_natives("1.7 memory copy methods", env, unsafecls, memcopy_methods_17, sizeof(memcopy_methods_17)/sizeof(JNINativeMethod)); |
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1744 } |
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1745 if (!success) { |
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1746 success = register_natives("1.5 memory copy methods", env, unsafecls, memcopy_methods_15, sizeof(memcopy_methods_15)/sizeof(JNINativeMethod)); |
| 0 | 1747 } |
| 1748 } | |
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1749 |
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1750 // Unsafe.defineAnonymousClass |
|
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1751 if (EnableInvokeDynamic) { |
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1752 register_natives("1.7 define anonymous class method", env, unsafecls, anonk_methods, sizeof(anonk_methods)/sizeof(JNINativeMethod)); |
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1753 } |
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1754 |
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1755 // Unsafe.shouldBeInitialized |
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1756 if (EnableInvokeDynamic) { |
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1757 register_natives("1.7 LambdaForm support", env, unsafecls, lform_methods, sizeof(lform_methods)/sizeof(JNINativeMethod)); |
| 0 | 1758 } |
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1759 |
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1760 // Fence methods |
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1761 register_natives("1.8 fence methods", env, unsafecls, fence_methods, sizeof(fence_methods)/sizeof(JNINativeMethod)); |
| 0 | 1762 } |
| 1763 JVM_END |