aoqi@0: /* aoqi@0: * Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved. aoqi@0: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. aoqi@0: * aoqi@0: * This code is free software; you can redistribute it and/or modify it aoqi@0: * under the terms of the GNU General Public License version 2 only, as aoqi@0: * published by the Free Software Foundation. aoqi@0: * aoqi@0: * This code is distributed in the hope that it will be useful, but WITHOUT aoqi@0: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or aoqi@0: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License aoqi@0: * version 2 for more details (a copy is included in the LICENSE file that aoqi@0: * accompanied this code). aoqi@0: * aoqi@0: * You should have received a copy of the GNU General Public License version aoqi@0: * 2 along with this work; if not, write to the Free Software Foundation, aoqi@0: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. aoqi@0: * aoqi@0: * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA aoqi@0: * or visit www.oracle.com if you need additional information or have any aoqi@0: * questions. aoqi@0: * aoqi@0: */ aoqi@0: aoqi@0: #include "precompiled.hpp" aoqi@0: #include "classfile/vmSymbols.hpp" aoqi@0: #include "utilities/macros.hpp" aoqi@0: #if INCLUDE_ALL_GCS aoqi@0: #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp" aoqi@0: #endif // INCLUDE_ALL_GCS aoqi@0: #include "memory/allocation.inline.hpp" aoqi@0: #include "prims/jni.h" aoqi@0: #include "prims/jvm.h" aoqi@0: #include "runtime/globals.hpp" aoqi@0: #include "runtime/interfaceSupport.hpp" aoqi@0: #include "runtime/reflection.hpp" aoqi@0: #include "runtime/synchronizer.hpp" aoqi@0: #include "services/threadService.hpp" aoqi@0: #include "trace/tracing.hpp" aoqi@0: #include "utilities/copy.hpp" aoqi@0: #include "utilities/dtrace.hpp" aoqi@0: aoqi@0: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC aoqi@0: aoqi@0: /* aoqi@0: * Implementation of class sun.misc.Unsafe aoqi@0: */ aoqi@0: aoqi@0: #ifndef USDT2 aoqi@0: HS_DTRACE_PROBE_DECL3(hotspot, thread__park__begin, uintptr_t, int, long long); aoqi@0: HS_DTRACE_PROBE_DECL1(hotspot, thread__park__end, uintptr_t); aoqi@0: HS_DTRACE_PROBE_DECL1(hotspot, thread__unpark, uintptr_t); aoqi@0: #endif /* !USDT2 */ aoqi@0: aoqi@0: #define MAX_OBJECT_SIZE \ aoqi@0: ( arrayOopDesc::header_size(T_DOUBLE) * HeapWordSize \ aoqi@0: + ((julong)max_jint * sizeof(double)) ) aoqi@0: aoqi@0: aoqi@0: #define UNSAFE_ENTRY(result_type, header) \ aoqi@0: JVM_ENTRY(result_type, header) aoqi@0: aoqi@0: // Can't use UNSAFE_LEAF because it has the signature of a straight aoqi@0: // call into the runtime (just like JVM_LEAF, funny that) but it's aoqi@0: // called like a Java Native and thus the wrapper built for it passes aoqi@0: // arguments like a JNI call. It expects those arguments to be popped aoqi@0: // from the stack on Intel like all good JNI args are, and adjusts the aoqi@0: // stack according. Since the JVM_LEAF call expects no extra aoqi@0: // arguments the stack isn't popped in the C code, is pushed by the aoqi@0: // wrapper and we get sick. aoqi@0: //#define UNSAFE_LEAF(result_type, header) \ aoqi@0: // JVM_LEAF(result_type, header) aoqi@0: aoqi@0: #define UNSAFE_END JVM_END aoqi@0: aoqi@0: #define UnsafeWrapper(arg) /*nothing, for the present*/ aoqi@0: aoqi@0: aoqi@0: inline void* addr_from_java(jlong addr) { aoqi@0: // This assert fails in a variety of ways on 32-bit systems. aoqi@0: // It is impossible to predict whether native code that converts aoqi@0: // pointers to longs will sign-extend or zero-extend the addresses. aoqi@0: //assert(addr == (uintptr_t)addr, "must not be odd high bits"); aoqi@0: return (void*)(uintptr_t)addr; aoqi@0: } aoqi@0: aoqi@0: inline jlong addr_to_java(void* p) { aoqi@0: assert(p == (void*)(uintptr_t)p, "must not be odd high bits"); aoqi@0: return (uintptr_t)p; aoqi@0: } aoqi@0: aoqi@0: aoqi@0: // Note: The VM's obj_field and related accessors use byte-scaled aoqi@0: // ("unscaled") offsets, just as the unsafe methods do. aoqi@0: aoqi@0: // However, the method Unsafe.fieldOffset explicitly declines to aoqi@0: // guarantee this. The field offset values manipulated by the Java user aoqi@0: // through the Unsafe API are opaque cookies that just happen to be byte aoqi@0: // offsets. We represent this state of affairs by passing the cookies aoqi@0: // through conversion functions when going between the VM and the Unsafe API. aoqi@0: // The conversion functions just happen to be no-ops at present. aoqi@0: aoqi@0: inline jlong field_offset_to_byte_offset(jlong field_offset) { aoqi@0: return field_offset; aoqi@0: } aoqi@0: aoqi@0: inline jlong field_offset_from_byte_offset(jlong byte_offset) { aoqi@0: return byte_offset; aoqi@0: } aoqi@0: aoqi@0: inline jint invocation_key_from_method_slot(jint slot) { aoqi@0: return slot; aoqi@0: } aoqi@0: aoqi@0: inline jint invocation_key_to_method_slot(jint key) { aoqi@0: return key; aoqi@0: } aoqi@0: aoqi@0: inline void* index_oop_from_field_offset_long(oop p, jlong field_offset) { aoqi@0: jlong byte_offset = field_offset_to_byte_offset(field_offset); aoqi@0: #ifdef ASSERT aoqi@0: if (p != NULL) { aoqi@0: assert(byte_offset >= 0 && byte_offset <= (jlong)MAX_OBJECT_SIZE, "sane offset"); aoqi@0: if (byte_offset == (jint)byte_offset) { aoqi@0: void* ptr_plus_disp = (address)p + byte_offset; aoqi@0: assert((void*)p->obj_field_addr((jint)byte_offset) == ptr_plus_disp, aoqi@0: "raw [ptr+disp] must be consistent with oop::field_base"); aoqi@0: } aoqi@0: jlong p_size = HeapWordSize * (jlong)(p->size()); aoqi@0: assert(byte_offset < p_size, err_msg("Unsafe access: offset " INT64_FORMAT " > object's size " INT64_FORMAT, byte_offset, p_size)); aoqi@0: } aoqi@0: #endif aoqi@0: if (sizeof(char*) == sizeof(jint)) // (this constant folds!) aoqi@0: return (address)p + (jint) byte_offset; aoqi@0: else aoqi@0: return (address)p + byte_offset; aoqi@0: } aoqi@0: aoqi@0: // Externally callable versions: aoqi@0: // (Use these in compiler intrinsics which emulate unsafe primitives.) aoqi@0: jlong Unsafe_field_offset_to_byte_offset(jlong field_offset) { aoqi@0: return field_offset; aoqi@0: } aoqi@0: jlong Unsafe_field_offset_from_byte_offset(jlong byte_offset) { aoqi@0: return byte_offset; aoqi@0: } aoqi@0: jint Unsafe_invocation_key_from_method_slot(jint slot) { aoqi@0: return invocation_key_from_method_slot(slot); aoqi@0: } aoqi@0: jint Unsafe_invocation_key_to_method_slot(jint key) { aoqi@0: return invocation_key_to_method_slot(key); aoqi@0: } aoqi@0: aoqi@0: aoqi@0: ///// Data in the Java heap. aoqi@0: aoqi@0: #define GET_FIELD(obj, offset, type_name, v) \ aoqi@0: oop p = JNIHandles::resolve(obj); \ aoqi@0: type_name v = *(type_name*)index_oop_from_field_offset_long(p, offset) aoqi@0: aoqi@0: #define SET_FIELD(obj, offset, type_name, x) \ aoqi@0: oop p = JNIHandles::resolve(obj); \ aoqi@0: *(type_name*)index_oop_from_field_offset_long(p, offset) = x aoqi@0: aoqi@0: #define GET_FIELD_VOLATILE(obj, offset, type_name, v) \ aoqi@0: oop p = JNIHandles::resolve(obj); \ aoqi@0: if (support_IRIW_for_not_multiple_copy_atomic_cpu) { \ aoqi@0: OrderAccess::fence(); \ aoqi@0: } \ aoqi@0: volatile type_name v = OrderAccess::load_acquire((volatile type_name*)index_oop_from_field_offset_long(p, offset)); aoqi@0: aoqi@0: #define SET_FIELD_VOLATILE(obj, offset, type_name, x) \ aoqi@0: oop p = JNIHandles::resolve(obj); \ aoqi@0: OrderAccess::release_store_fence((volatile type_name*)index_oop_from_field_offset_long(p, offset), x); aoqi@0: aoqi@0: // Macros for oops that check UseCompressedOops aoqi@0: aoqi@0: #define GET_OOP_FIELD(obj, offset, v) \ aoqi@0: oop p = JNIHandles::resolve(obj); \ aoqi@0: oop v; \ aoqi@0: if (UseCompressedOops) { \ aoqi@0: narrowOop n = *(narrowOop*)index_oop_from_field_offset_long(p, offset); \ aoqi@0: v = oopDesc::decode_heap_oop(n); \ aoqi@0: } else { \ aoqi@0: v = *(oop*)index_oop_from_field_offset_long(p, offset); \ aoqi@0: } aoqi@0: aoqi@0: aoqi@0: // Get/SetObject must be special-cased, since it works with handles. aoqi@0: aoqi@0: // The xxx140 variants for backward compatibility do not allow a full-width offset. aoqi@0: UNSAFE_ENTRY(jobject, Unsafe_GetObject140(JNIEnv *env, jobject unsafe, jobject obj, jint offset)) aoqi@0: UnsafeWrapper("Unsafe_GetObject"); aoqi@0: if (obj == NULL) THROW_0(vmSymbols::java_lang_NullPointerException()); aoqi@0: GET_OOP_FIELD(obj, offset, v) aoqi@0: jobject ret = JNIHandles::make_local(env, v); aoqi@0: #if INCLUDE_ALL_GCS aoqi@0: // We could be accessing the referent field in a reference aoqi@0: // object. If G1 is enabled then we need to register a non-null aoqi@0: // referent with the SATB barrier. aoqi@0: if (UseG1GC) { aoqi@0: bool needs_barrier = false; aoqi@0: aoqi@0: if (ret != NULL) { aoqi@0: if (offset == java_lang_ref_Reference::referent_offset) { aoqi@0: oop o = JNIHandles::resolve_non_null(obj); aoqi@0: Klass* k = o->klass(); aoqi@0: if (InstanceKlass::cast(k)->reference_type() != REF_NONE) { aoqi@0: assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity"); aoqi@0: needs_barrier = true; aoqi@0: } aoqi@0: } aoqi@0: } aoqi@0: aoqi@0: if (needs_barrier) { aoqi@0: oop referent = JNIHandles::resolve(ret); aoqi@0: G1SATBCardTableModRefBS::enqueue(referent); aoqi@0: } aoqi@0: } aoqi@0: #endif // INCLUDE_ALL_GCS aoqi@0: return ret; aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(void, Unsafe_SetObject140(JNIEnv *env, jobject unsafe, jobject obj, jint offset, jobject x_h)) aoqi@0: UnsafeWrapper("Unsafe_SetObject"); aoqi@0: if (obj == NULL) THROW(vmSymbols::java_lang_NullPointerException()); aoqi@0: oop x = JNIHandles::resolve(x_h); aoqi@0: //SET_FIELD(obj, offset, oop, x); aoqi@0: oop p = JNIHandles::resolve(obj); aoqi@0: if (UseCompressedOops) { aoqi@0: if (x != NULL) { aoqi@0: // If there is a heap base pointer, we are obliged to emit a store barrier. aoqi@0: oop_store((narrowOop*)index_oop_from_field_offset_long(p, offset), x); aoqi@0: } else { aoqi@0: narrowOop n = oopDesc::encode_heap_oop_not_null(x); aoqi@0: *(narrowOop*)index_oop_from_field_offset_long(p, offset) = n; aoqi@0: } aoqi@0: } else { aoqi@0: if (x != NULL) { aoqi@0: // If there is a heap base pointer, we are obliged to emit a store barrier. aoqi@0: oop_store((oop*)index_oop_from_field_offset_long(p, offset), x); aoqi@0: } else { aoqi@0: *(oop*)index_oop_from_field_offset_long(p, offset) = x; aoqi@0: } aoqi@0: } aoqi@0: UNSAFE_END aoqi@0: aoqi@0: // The normal variants allow a null base pointer with an arbitrary address. aoqi@0: // But if the base pointer is non-null, the offset should make some sense. aoqi@0: // That is, it should be in the range [0, MAX_OBJECT_SIZE]. aoqi@0: UNSAFE_ENTRY(jobject, Unsafe_GetObject(JNIEnv *env, jobject unsafe, jobject obj, jlong offset)) aoqi@0: UnsafeWrapper("Unsafe_GetObject"); aoqi@0: GET_OOP_FIELD(obj, offset, v) aoqi@0: jobject ret = JNIHandles::make_local(env, v); aoqi@0: #if INCLUDE_ALL_GCS aoqi@0: // We could be accessing the referent field in a reference aoqi@0: // object. If G1 is enabled then we need to register non-null aoqi@0: // referent with the SATB barrier. aoqi@0: if (UseG1GC) { aoqi@0: bool needs_barrier = false; aoqi@0: aoqi@0: if (ret != NULL) { aoqi@0: if (offset == java_lang_ref_Reference::referent_offset && obj != NULL) { aoqi@0: oop o = JNIHandles::resolve(obj); aoqi@0: Klass* k = o->klass(); aoqi@0: if (InstanceKlass::cast(k)->reference_type() != REF_NONE) { aoqi@0: assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity"); aoqi@0: needs_barrier = true; aoqi@0: } aoqi@0: } aoqi@0: } aoqi@0: aoqi@0: if (needs_barrier) { aoqi@0: oop referent = JNIHandles::resolve(ret); aoqi@0: G1SATBCardTableModRefBS::enqueue(referent); aoqi@0: } aoqi@0: } aoqi@0: #endif // INCLUDE_ALL_GCS aoqi@0: return ret; aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(void, Unsafe_SetObject(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jobject x_h)) aoqi@0: UnsafeWrapper("Unsafe_SetObject"); aoqi@0: oop x = JNIHandles::resolve(x_h); aoqi@0: oop p = JNIHandles::resolve(obj); aoqi@0: if (UseCompressedOops) { aoqi@0: oop_store((narrowOop*)index_oop_from_field_offset_long(p, offset), x); aoqi@0: } else { aoqi@0: oop_store((oop*)index_oop_from_field_offset_long(p, offset), x); aoqi@0: } aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(jobject, Unsafe_GetObjectVolatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset)) aoqi@0: UnsafeWrapper("Unsafe_GetObjectVolatile"); aoqi@0: oop p = JNIHandles::resolve(obj); aoqi@0: void* addr = index_oop_from_field_offset_long(p, offset); aoqi@0: volatile oop v; aoqi@0: if (UseCompressedOops) { aoqi@0: volatile narrowOop n = *(volatile narrowOop*) addr; aoqi@0: (void)const_cast(v = oopDesc::decode_heap_oop(n)); aoqi@0: } else { aoqi@0: (void)const_cast(v = *(volatile oop*) addr); aoqi@0: } aoqi@0: OrderAccess::acquire(); aoqi@0: return JNIHandles::make_local(env, v); aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(void, Unsafe_SetObjectVolatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jobject x_h)) aoqi@0: UnsafeWrapper("Unsafe_SetObjectVolatile"); aoqi@0: oop x = JNIHandles::resolve(x_h); aoqi@0: oop p = JNIHandles::resolve(obj); aoqi@0: void* addr = index_oop_from_field_offset_long(p, offset); aoqi@0: OrderAccess::release(); aoqi@0: if (UseCompressedOops) { aoqi@0: oop_store((narrowOop*)addr, x); aoqi@0: } else { aoqi@0: oop_store((oop*)addr, x); aoqi@0: } aoqi@0: OrderAccess::fence(); aoqi@0: UNSAFE_END aoqi@0: aoqi@0: #ifndef SUPPORTS_NATIVE_CX8 aoqi@0: // Keep old code for platforms which may not have atomic jlong (8 bytes) instructions aoqi@0: aoqi@0: // Volatile long versions must use locks if !VM_Version::supports_cx8(). aoqi@0: // support_cx8 is a surrogate for 'supports atomic long memory ops'. aoqi@0: aoqi@0: UNSAFE_ENTRY(jlong, Unsafe_GetLongVolatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset)) aoqi@0: UnsafeWrapper("Unsafe_GetLongVolatile"); aoqi@0: { aoqi@0: if (VM_Version::supports_cx8()) { aoqi@0: GET_FIELD_VOLATILE(obj, offset, jlong, v); aoqi@0: return v; aoqi@0: } aoqi@0: else { aoqi@0: Handle p (THREAD, JNIHandles::resolve(obj)); aoqi@0: jlong* addr = (jlong*)(index_oop_from_field_offset_long(p(), offset)); aoqi@0: ObjectLocker ol(p, THREAD); aoqi@0: jlong value = *addr; aoqi@0: return value; aoqi@0: } aoqi@0: } aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(void, Unsafe_SetLongVolatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jlong x)) aoqi@0: UnsafeWrapper("Unsafe_SetLongVolatile"); aoqi@0: { aoqi@0: if (VM_Version::supports_cx8()) { aoqi@0: SET_FIELD_VOLATILE(obj, offset, jlong, x); aoqi@0: } aoqi@0: else { aoqi@0: Handle p (THREAD, JNIHandles::resolve(obj)); aoqi@0: jlong* addr = (jlong*)(index_oop_from_field_offset_long(p(), offset)); aoqi@0: ObjectLocker ol(p, THREAD); aoqi@0: *addr = x; aoqi@0: } aoqi@0: } aoqi@0: UNSAFE_END aoqi@0: aoqi@0: #endif // not SUPPORTS_NATIVE_CX8 aoqi@0: aoqi@0: #define DEFINE_GETSETOOP(jboolean, Boolean) \ aoqi@0: \ aoqi@0: UNSAFE_ENTRY(jboolean, Unsafe_Get##Boolean##140(JNIEnv *env, jobject unsafe, jobject obj, jint offset)) \ aoqi@0: UnsafeWrapper("Unsafe_Get"#Boolean); \ aoqi@0: if (obj == NULL) THROW_0(vmSymbols::java_lang_NullPointerException()); \ aoqi@0: GET_FIELD(obj, offset, jboolean, v); \ aoqi@0: return v; \ aoqi@0: UNSAFE_END \ aoqi@0: \ aoqi@0: UNSAFE_ENTRY(void, Unsafe_Set##Boolean##140(JNIEnv *env, jobject unsafe, jobject obj, jint offset, jboolean x)) \ aoqi@0: UnsafeWrapper("Unsafe_Set"#Boolean); \ aoqi@0: if (obj == NULL) THROW(vmSymbols::java_lang_NullPointerException()); \ aoqi@0: SET_FIELD(obj, offset, jboolean, x); \ aoqi@0: UNSAFE_END \ aoqi@0: \ aoqi@0: UNSAFE_ENTRY(jboolean, Unsafe_Get##Boolean(JNIEnv *env, jobject unsafe, jobject obj, jlong offset)) \ aoqi@0: UnsafeWrapper("Unsafe_Get"#Boolean); \ aoqi@0: GET_FIELD(obj, offset, jboolean, v); \ aoqi@0: return v; \ aoqi@0: UNSAFE_END \ aoqi@0: \ aoqi@0: UNSAFE_ENTRY(void, Unsafe_Set##Boolean(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jboolean x)) \ aoqi@0: UnsafeWrapper("Unsafe_Set"#Boolean); \ aoqi@0: SET_FIELD(obj, offset, jboolean, x); \ aoqi@0: UNSAFE_END \ aoqi@0: \ aoqi@0: // END DEFINE_GETSETOOP. aoqi@0: aoqi@0: DEFINE_GETSETOOP(jboolean, Boolean) aoqi@0: DEFINE_GETSETOOP(jbyte, Byte) aoqi@0: DEFINE_GETSETOOP(jshort, Short); aoqi@0: DEFINE_GETSETOOP(jchar, Char); aoqi@0: DEFINE_GETSETOOP(jint, Int); aoqi@0: DEFINE_GETSETOOP(jlong, Long); aoqi@0: DEFINE_GETSETOOP(jfloat, Float); aoqi@0: DEFINE_GETSETOOP(jdouble, Double); aoqi@0: aoqi@0: #undef DEFINE_GETSETOOP aoqi@0: aoqi@0: #define DEFINE_GETSETOOP_VOLATILE(jboolean, Boolean) \ aoqi@0: \ aoqi@0: UNSAFE_ENTRY(jboolean, Unsafe_Get##Boolean##Volatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset)) \ aoqi@0: UnsafeWrapper("Unsafe_Get"#Boolean); \ aoqi@0: GET_FIELD_VOLATILE(obj, offset, jboolean, v); \ aoqi@0: return v; \ aoqi@0: UNSAFE_END \ aoqi@0: \ aoqi@0: UNSAFE_ENTRY(void, Unsafe_Set##Boolean##Volatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jboolean x)) \ aoqi@0: UnsafeWrapper("Unsafe_Set"#Boolean); \ aoqi@0: SET_FIELD_VOLATILE(obj, offset, jboolean, x); \ aoqi@0: UNSAFE_END \ aoqi@0: \ aoqi@0: // END DEFINE_GETSETOOP_VOLATILE. aoqi@0: aoqi@0: DEFINE_GETSETOOP_VOLATILE(jboolean, Boolean) aoqi@0: DEFINE_GETSETOOP_VOLATILE(jbyte, Byte) aoqi@0: DEFINE_GETSETOOP_VOLATILE(jshort, Short); aoqi@0: DEFINE_GETSETOOP_VOLATILE(jchar, Char); aoqi@0: DEFINE_GETSETOOP_VOLATILE(jint, Int); aoqi@0: DEFINE_GETSETOOP_VOLATILE(jfloat, Float); aoqi@0: DEFINE_GETSETOOP_VOLATILE(jdouble, Double); aoqi@0: aoqi@0: #ifdef SUPPORTS_NATIVE_CX8 aoqi@0: DEFINE_GETSETOOP_VOLATILE(jlong, Long); aoqi@0: #endif aoqi@0: aoqi@0: #undef DEFINE_GETSETOOP_VOLATILE aoqi@0: aoqi@0: // The non-intrinsified versions of setOrdered just use setVolatile aoqi@0: aoqi@0: UNSAFE_ENTRY(void, Unsafe_SetOrderedInt(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jint x)) aoqi@0: UnsafeWrapper("Unsafe_SetOrderedInt"); aoqi@0: SET_FIELD_VOLATILE(obj, offset, jint, x); aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(void, Unsafe_SetOrderedObject(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jobject x_h)) aoqi@0: UnsafeWrapper("Unsafe_SetOrderedObject"); aoqi@0: oop x = JNIHandles::resolve(x_h); aoqi@0: oop p = JNIHandles::resolve(obj); aoqi@0: void* addr = index_oop_from_field_offset_long(p, offset); aoqi@0: OrderAccess::release(); aoqi@0: if (UseCompressedOops) { aoqi@0: oop_store((narrowOop*)addr, x); aoqi@0: } else { aoqi@0: oop_store((oop*)addr, x); aoqi@0: } aoqi@0: OrderAccess::fence(); aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(void, Unsafe_SetOrderedLong(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jlong x)) aoqi@0: UnsafeWrapper("Unsafe_SetOrderedLong"); aoqi@0: #ifdef SUPPORTS_NATIVE_CX8 aoqi@0: SET_FIELD_VOLATILE(obj, offset, jlong, x); aoqi@0: #else aoqi@0: // Keep old code for platforms which may not have atomic long (8 bytes) instructions aoqi@0: { aoqi@0: if (VM_Version::supports_cx8()) { aoqi@0: SET_FIELD_VOLATILE(obj, offset, jlong, x); aoqi@0: } aoqi@0: else { aoqi@0: Handle p (THREAD, JNIHandles::resolve(obj)); aoqi@0: jlong* addr = (jlong*)(index_oop_from_field_offset_long(p(), offset)); aoqi@0: ObjectLocker ol(p, THREAD); aoqi@0: *addr = x; aoqi@0: } aoqi@0: } aoqi@0: #endif aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(void, Unsafe_LoadFence(JNIEnv *env, jobject unsafe)) aoqi@0: UnsafeWrapper("Unsafe_LoadFence"); aoqi@0: OrderAccess::acquire(); aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(void, Unsafe_StoreFence(JNIEnv *env, jobject unsafe)) aoqi@0: UnsafeWrapper("Unsafe_StoreFence"); aoqi@0: OrderAccess::release(); aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(void, Unsafe_FullFence(JNIEnv *env, jobject unsafe)) aoqi@0: UnsafeWrapper("Unsafe_FullFence"); aoqi@0: OrderAccess::fence(); aoqi@0: UNSAFE_END aoqi@0: aoqi@0: ////// Data in the C heap. aoqi@0: aoqi@0: // Note: These do not throw NullPointerException for bad pointers. aoqi@0: // They just crash. Only a oop base pointer can generate a NullPointerException. aoqi@0: // aoqi@0: #define DEFINE_GETSETNATIVE(java_type, Type, native_type) \ aoqi@0: \ aoqi@0: UNSAFE_ENTRY(java_type, Unsafe_GetNative##Type(JNIEnv *env, jobject unsafe, jlong addr)) \ aoqi@0: UnsafeWrapper("Unsafe_GetNative"#Type); \ aoqi@0: void* p = addr_from_java(addr); \ aoqi@0: JavaThread* t = JavaThread::current(); \ aoqi@0: t->set_doing_unsafe_access(true); \ aoqi@0: java_type x = *(volatile native_type*)p; \ aoqi@0: t->set_doing_unsafe_access(false); \ aoqi@0: return x; \ aoqi@0: UNSAFE_END \ aoqi@0: \ aoqi@0: UNSAFE_ENTRY(void, Unsafe_SetNative##Type(JNIEnv *env, jobject unsafe, jlong addr, java_type x)) \ aoqi@0: UnsafeWrapper("Unsafe_SetNative"#Type); \ aoqi@0: JavaThread* t = JavaThread::current(); \ aoqi@0: t->set_doing_unsafe_access(true); \ aoqi@0: void* p = addr_from_java(addr); \ aoqi@0: *(volatile native_type*)p = x; \ aoqi@0: t->set_doing_unsafe_access(false); \ aoqi@0: UNSAFE_END \ aoqi@0: \ aoqi@0: // END DEFINE_GETSETNATIVE. aoqi@0: aoqi@0: DEFINE_GETSETNATIVE(jbyte, Byte, signed char) aoqi@0: DEFINE_GETSETNATIVE(jshort, Short, signed short); aoqi@0: DEFINE_GETSETNATIVE(jchar, Char, unsigned short); aoqi@0: DEFINE_GETSETNATIVE(jint, Int, jint); aoqi@0: // no long -- handled specially aoqi@0: DEFINE_GETSETNATIVE(jfloat, Float, float); aoqi@0: DEFINE_GETSETNATIVE(jdouble, Double, double); aoqi@0: aoqi@0: #undef DEFINE_GETSETNATIVE aoqi@0: aoqi@0: UNSAFE_ENTRY(jlong, Unsafe_GetNativeLong(JNIEnv *env, jobject unsafe, jlong addr)) aoqi@0: UnsafeWrapper("Unsafe_GetNativeLong"); aoqi@0: JavaThread* t = JavaThread::current(); aoqi@0: // We do it this way to avoid problems with access to heap using 64 aoqi@0: // bit loads, as jlong in heap could be not 64-bit aligned, and on aoqi@0: // some CPUs (SPARC) it leads to SIGBUS. aoqi@0: t->set_doing_unsafe_access(true); aoqi@0: void* p = addr_from_java(addr); aoqi@0: jlong x; aoqi@0: if (((intptr_t)p & 7) == 0) { aoqi@0: // jlong is aligned, do a volatile access aoqi@0: x = *(volatile jlong*)p; aoqi@0: } else { aoqi@0: jlong_accessor acc; aoqi@0: acc.words[0] = ((volatile jint*)p)[0]; aoqi@0: acc.words[1] = ((volatile jint*)p)[1]; aoqi@0: x = acc.long_value; aoqi@0: } aoqi@0: t->set_doing_unsafe_access(false); aoqi@0: return x; aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(void, Unsafe_SetNativeLong(JNIEnv *env, jobject unsafe, jlong addr, jlong x)) aoqi@0: UnsafeWrapper("Unsafe_SetNativeLong"); aoqi@0: JavaThread* t = JavaThread::current(); aoqi@0: // see comment for Unsafe_GetNativeLong aoqi@0: t->set_doing_unsafe_access(true); aoqi@0: void* p = addr_from_java(addr); aoqi@0: if (((intptr_t)p & 7) == 0) { aoqi@0: // jlong is aligned, do a volatile access aoqi@0: *(volatile jlong*)p = x; aoqi@0: } else { aoqi@0: jlong_accessor acc; aoqi@0: acc.long_value = x; aoqi@0: ((volatile jint*)p)[0] = acc.words[0]; aoqi@0: ((volatile jint*)p)[1] = acc.words[1]; aoqi@0: } aoqi@0: t->set_doing_unsafe_access(false); aoqi@0: UNSAFE_END aoqi@0: aoqi@0: aoqi@0: UNSAFE_ENTRY(jlong, Unsafe_GetNativeAddress(JNIEnv *env, jobject unsafe, jlong addr)) aoqi@0: UnsafeWrapper("Unsafe_GetNativeAddress"); aoqi@0: void* p = addr_from_java(addr); aoqi@0: return addr_to_java(*(void**)p); aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(void, Unsafe_SetNativeAddress(JNIEnv *env, jobject unsafe, jlong addr, jlong x)) aoqi@0: UnsafeWrapper("Unsafe_SetNativeAddress"); aoqi@0: void* p = addr_from_java(addr); aoqi@0: *(void**)p = addr_from_java(x); aoqi@0: UNSAFE_END aoqi@0: aoqi@0: aoqi@0: ////// Allocation requests aoqi@0: aoqi@0: UNSAFE_ENTRY(jobject, Unsafe_AllocateInstance(JNIEnv *env, jobject unsafe, jclass cls)) aoqi@0: UnsafeWrapper("Unsafe_AllocateInstance"); aoqi@0: { aoqi@0: ThreadToNativeFromVM ttnfv(thread); aoqi@0: return env->AllocObject(cls); aoqi@0: } aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(jlong, Unsafe_AllocateMemory(JNIEnv *env, jobject unsafe, jlong size)) aoqi@0: UnsafeWrapper("Unsafe_AllocateMemory"); aoqi@0: size_t sz = (size_t)size; aoqi@0: if (sz != (julong)size || size < 0) { aoqi@0: THROW_0(vmSymbols::java_lang_IllegalArgumentException()); aoqi@0: } aoqi@0: if (sz == 0) { aoqi@0: return 0; aoqi@0: } aoqi@0: sz = round_to(sz, HeapWordSize); aoqi@0: void* x = os::malloc(sz, mtInternal); aoqi@0: if (x == NULL) { aoqi@0: THROW_0(vmSymbols::java_lang_OutOfMemoryError()); aoqi@0: } aoqi@0: //Copy::fill_to_words((HeapWord*)x, sz / HeapWordSize); aoqi@0: return addr_to_java(x); aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(jlong, Unsafe_ReallocateMemory(JNIEnv *env, jobject unsafe, jlong addr, jlong size)) aoqi@0: UnsafeWrapper("Unsafe_ReallocateMemory"); aoqi@0: void* p = addr_from_java(addr); aoqi@0: size_t sz = (size_t)size; aoqi@0: if (sz != (julong)size || size < 0) { aoqi@0: THROW_0(vmSymbols::java_lang_IllegalArgumentException()); aoqi@0: } aoqi@0: if (sz == 0) { aoqi@0: os::free(p); aoqi@0: return 0; aoqi@0: } aoqi@0: sz = round_to(sz, HeapWordSize); aoqi@0: void* x = (p == NULL) ? os::malloc(sz, mtInternal) : os::realloc(p, sz, mtInternal); aoqi@0: if (x == NULL) { aoqi@0: THROW_0(vmSymbols::java_lang_OutOfMemoryError()); aoqi@0: } aoqi@0: return addr_to_java(x); aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(void, Unsafe_FreeMemory(JNIEnv *env, jobject unsafe, jlong addr)) aoqi@0: UnsafeWrapper("Unsafe_FreeMemory"); aoqi@0: void* p = addr_from_java(addr); aoqi@0: if (p == NULL) { aoqi@0: return; aoqi@0: } aoqi@0: os::free(p); aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(void, Unsafe_SetMemory(JNIEnv *env, jobject unsafe, jlong addr, jlong size, jbyte value)) aoqi@0: UnsafeWrapper("Unsafe_SetMemory"); aoqi@0: size_t sz = (size_t)size; aoqi@0: if (sz != (julong)size || size < 0) { aoqi@0: THROW(vmSymbols::java_lang_IllegalArgumentException()); aoqi@0: } aoqi@0: char* p = (char*) addr_from_java(addr); aoqi@0: Copy::fill_to_memory_atomic(p, sz, value); aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(void, Unsafe_SetMemory2(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jlong size, jbyte value)) aoqi@0: UnsafeWrapper("Unsafe_SetMemory"); aoqi@0: size_t sz = (size_t)size; aoqi@0: if (sz != (julong)size || size < 0) { aoqi@0: THROW(vmSymbols::java_lang_IllegalArgumentException()); aoqi@0: } aoqi@0: oop base = JNIHandles::resolve(obj); aoqi@0: void* p = index_oop_from_field_offset_long(base, offset); aoqi@0: Copy::fill_to_memory_atomic(p, sz, value); aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(void, Unsafe_CopyMemory(JNIEnv *env, jobject unsafe, jlong srcAddr, jlong dstAddr, jlong size)) aoqi@0: UnsafeWrapper("Unsafe_CopyMemory"); aoqi@0: if (size == 0) { aoqi@0: return; aoqi@0: } aoqi@0: size_t sz = (size_t)size; aoqi@0: if (sz != (julong)size || size < 0) { aoqi@0: THROW(vmSymbols::java_lang_IllegalArgumentException()); aoqi@0: } aoqi@0: void* src = addr_from_java(srcAddr); aoqi@0: void* dst = addr_from_java(dstAddr); aoqi@0: Copy::conjoint_memory_atomic(src, dst, sz); aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(void, Unsafe_CopyMemory2(JNIEnv *env, jobject unsafe, jobject srcObj, jlong srcOffset, jobject dstObj, jlong dstOffset, jlong size)) aoqi@0: UnsafeWrapper("Unsafe_CopyMemory"); aoqi@0: if (size == 0) { aoqi@0: return; aoqi@0: } aoqi@0: size_t sz = (size_t)size; aoqi@0: if (sz != (julong)size || size < 0) { aoqi@0: THROW(vmSymbols::java_lang_IllegalArgumentException()); aoqi@0: } aoqi@0: oop srcp = JNIHandles::resolve(srcObj); aoqi@0: oop dstp = JNIHandles::resolve(dstObj); aoqi@0: if (dstp != NULL && !dstp->is_typeArray()) { aoqi@0: // NYI: This works only for non-oop arrays at present. aoqi@0: // Generalizing it would be reasonable, but requires card marking. aoqi@0: // Also, autoboxing a Long from 0L in copyMemory(x,y, 0L,z, n) would be bad. aoqi@0: THROW(vmSymbols::java_lang_IllegalArgumentException()); aoqi@0: } aoqi@0: void* src = index_oop_from_field_offset_long(srcp, srcOffset); aoqi@0: void* dst = index_oop_from_field_offset_long(dstp, dstOffset); aoqi@0: Copy::conjoint_memory_atomic(src, dst, sz); aoqi@0: UNSAFE_END aoqi@0: aoqi@0: aoqi@0: ////// Random queries aoqi@0: aoqi@0: // See comment at file start about UNSAFE_LEAF aoqi@0: //UNSAFE_LEAF(jint, Unsafe_AddressSize()) aoqi@0: UNSAFE_ENTRY(jint, Unsafe_AddressSize(JNIEnv *env, jobject unsafe)) aoqi@0: UnsafeWrapper("Unsafe_AddressSize"); aoqi@0: return sizeof(void*); aoqi@0: UNSAFE_END aoqi@0: aoqi@0: // See comment at file start about UNSAFE_LEAF aoqi@0: //UNSAFE_LEAF(jint, Unsafe_PageSize()) aoqi@0: UNSAFE_ENTRY(jint, Unsafe_PageSize(JNIEnv *env, jobject unsafe)) aoqi@0: UnsafeWrapper("Unsafe_PageSize"); aoqi@0: return os::vm_page_size(); aoqi@0: UNSAFE_END aoqi@0: aoqi@0: jint find_field_offset(jobject field, int must_be_static, TRAPS) { aoqi@0: if (field == NULL) { aoqi@0: THROW_0(vmSymbols::java_lang_NullPointerException()); aoqi@0: } aoqi@0: aoqi@0: oop reflected = JNIHandles::resolve_non_null(field); aoqi@0: oop mirror = java_lang_reflect_Field::clazz(reflected); aoqi@0: Klass* k = java_lang_Class::as_Klass(mirror); aoqi@0: int slot = java_lang_reflect_Field::slot(reflected); aoqi@0: int modifiers = java_lang_reflect_Field::modifiers(reflected); aoqi@0: aoqi@0: if (must_be_static >= 0) { aoqi@0: int really_is_static = ((modifiers & JVM_ACC_STATIC) != 0); aoqi@0: if (must_be_static != really_is_static) { aoqi@0: THROW_0(vmSymbols::java_lang_IllegalArgumentException()); aoqi@0: } aoqi@0: } aoqi@0: aoqi@0: int offset = InstanceKlass::cast(k)->field_offset(slot); aoqi@0: return field_offset_from_byte_offset(offset); aoqi@0: } aoqi@0: aoqi@0: UNSAFE_ENTRY(jlong, Unsafe_ObjectFieldOffset(JNIEnv *env, jobject unsafe, jobject field)) aoqi@0: UnsafeWrapper("Unsafe_ObjectFieldOffset"); aoqi@0: return find_field_offset(field, 0, THREAD); aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(jlong, Unsafe_StaticFieldOffset(JNIEnv *env, jobject unsafe, jobject field)) aoqi@0: UnsafeWrapper("Unsafe_StaticFieldOffset"); aoqi@0: return find_field_offset(field, 1, THREAD); aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(jobject, Unsafe_StaticFieldBaseFromField(JNIEnv *env, jobject unsafe, jobject field)) aoqi@0: UnsafeWrapper("Unsafe_StaticFieldBase"); aoqi@0: // Note: In this VM implementation, a field address is always a short aoqi@0: // offset from the base of a a klass metaobject. Thus, the full dynamic aoqi@0: // range of the return type is never used. However, some implementations aoqi@0: // might put the static field inside an array shared by many classes, aoqi@0: // or even at a fixed address, in which case the address could be quite aoqi@0: // large. In that last case, this function would return NULL, since aoqi@0: // the address would operate alone, without any base pointer. aoqi@0: aoqi@0: if (field == NULL) THROW_0(vmSymbols::java_lang_NullPointerException()); aoqi@0: aoqi@0: oop reflected = JNIHandles::resolve_non_null(field); aoqi@0: oop mirror = java_lang_reflect_Field::clazz(reflected); aoqi@0: int modifiers = java_lang_reflect_Field::modifiers(reflected); aoqi@0: aoqi@0: if ((modifiers & JVM_ACC_STATIC) == 0) { aoqi@0: THROW_0(vmSymbols::java_lang_IllegalArgumentException()); aoqi@0: } aoqi@0: aoqi@0: return JNIHandles::make_local(env, mirror); aoqi@0: UNSAFE_END aoqi@0: aoqi@0: //@deprecated aoqi@0: UNSAFE_ENTRY(jint, Unsafe_FieldOffset(JNIEnv *env, jobject unsafe, jobject field)) aoqi@0: UnsafeWrapper("Unsafe_FieldOffset"); aoqi@0: // tries (but fails) to be polymorphic between static and non-static: aoqi@0: jlong offset = find_field_offset(field, -1, THREAD); aoqi@0: guarantee(offset == (jint)offset, "offset fits in 32 bits"); aoqi@0: return (jint)offset; aoqi@0: UNSAFE_END aoqi@0: aoqi@0: //@deprecated aoqi@0: UNSAFE_ENTRY(jobject, Unsafe_StaticFieldBaseFromClass(JNIEnv *env, jobject unsafe, jobject clazz)) aoqi@0: UnsafeWrapper("Unsafe_StaticFieldBase"); aoqi@0: if (clazz == NULL) { aoqi@0: THROW_0(vmSymbols::java_lang_NullPointerException()); aoqi@0: } aoqi@0: return JNIHandles::make_local(env, JNIHandles::resolve_non_null(clazz)); aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(void, Unsafe_EnsureClassInitialized(JNIEnv *env, jobject unsafe, jobject clazz)) { aoqi@0: UnsafeWrapper("Unsafe_EnsureClassInitialized"); aoqi@0: if (clazz == NULL) { aoqi@0: THROW(vmSymbols::java_lang_NullPointerException()); aoqi@0: } aoqi@0: oop mirror = JNIHandles::resolve_non_null(clazz); aoqi@0: aoqi@0: Klass* klass = java_lang_Class::as_Klass(mirror); aoqi@0: if (klass != NULL && klass->should_be_initialized()) { aoqi@0: InstanceKlass* k = InstanceKlass::cast(klass); aoqi@0: k->initialize(CHECK); aoqi@0: } aoqi@0: } aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(jboolean, Unsafe_ShouldBeInitialized(JNIEnv *env, jobject unsafe, jobject clazz)) { aoqi@0: UnsafeWrapper("Unsafe_ShouldBeInitialized"); aoqi@0: if (clazz == NULL) { aoqi@0: THROW_(vmSymbols::java_lang_NullPointerException(), false); aoqi@0: } aoqi@0: oop mirror = JNIHandles::resolve_non_null(clazz); aoqi@0: Klass* klass = java_lang_Class::as_Klass(mirror); aoqi@0: if (klass != NULL && klass->should_be_initialized()) { aoqi@0: return true; aoqi@0: } aoqi@0: return false; aoqi@0: } aoqi@0: UNSAFE_END aoqi@0: aoqi@0: static void getBaseAndScale(int& base, int& scale, jclass acls, TRAPS) { aoqi@0: if (acls == NULL) { aoqi@0: THROW(vmSymbols::java_lang_NullPointerException()); aoqi@0: } aoqi@0: oop mirror = JNIHandles::resolve_non_null(acls); aoqi@0: Klass* k = java_lang_Class::as_Klass(mirror); aoqi@0: if (k == NULL || !k->oop_is_array()) { aoqi@0: THROW(vmSymbols::java_lang_InvalidClassException()); aoqi@0: } else if (k->oop_is_objArray()) { aoqi@0: base = arrayOopDesc::base_offset_in_bytes(T_OBJECT); aoqi@0: scale = heapOopSize; aoqi@0: } else if (k->oop_is_typeArray()) { aoqi@0: TypeArrayKlass* tak = TypeArrayKlass::cast(k); aoqi@0: base = tak->array_header_in_bytes(); aoqi@0: assert(base == arrayOopDesc::base_offset_in_bytes(tak->element_type()), "array_header_size semantics ok"); aoqi@0: scale = (1 << tak->log2_element_size()); aoqi@0: } else { aoqi@0: ShouldNotReachHere(); aoqi@0: } aoqi@0: } aoqi@0: aoqi@0: UNSAFE_ENTRY(jint, Unsafe_ArrayBaseOffset(JNIEnv *env, jobject unsafe, jclass acls)) aoqi@0: UnsafeWrapper("Unsafe_ArrayBaseOffset"); aoqi@0: int base, scale; aoqi@0: getBaseAndScale(base, scale, acls, CHECK_0); aoqi@0: return field_offset_from_byte_offset(base); aoqi@0: UNSAFE_END aoqi@0: aoqi@0: aoqi@0: UNSAFE_ENTRY(jint, Unsafe_ArrayIndexScale(JNIEnv *env, jobject unsafe, jclass acls)) aoqi@0: UnsafeWrapper("Unsafe_ArrayIndexScale"); aoqi@0: int base, scale; aoqi@0: getBaseAndScale(base, scale, acls, CHECK_0); aoqi@0: // This VM packs both fields and array elements down to the byte. aoqi@0: // But watch out: If this changes, so that array references for aoqi@0: // a given primitive type (say, T_BOOLEAN) use different memory units aoqi@0: // than fields, this method MUST return zero for such arrays. aoqi@0: // For example, the VM used to store sub-word sized fields in full aoqi@0: // words in the object layout, so that accessors like getByte(Object,int) aoqi@0: // did not really do what one might expect for arrays. Therefore, aoqi@0: // this function used to report a zero scale factor, so that the user aoqi@0: // would know not to attempt to access sub-word array elements. aoqi@0: // // Code for unpacked fields: aoqi@0: // if (scale < wordSize) return 0; aoqi@0: aoqi@0: // The following allows for a pretty general fieldOffset cookie scheme, aoqi@0: // but requires it to be linear in byte offset. aoqi@0: return field_offset_from_byte_offset(scale) - field_offset_from_byte_offset(0); aoqi@0: UNSAFE_END aoqi@0: aoqi@0: aoqi@0: static inline void throw_new(JNIEnv *env, const char *ename) { aoqi@0: char buf[100]; aoqi@0: strcpy(buf, "java/lang/"); aoqi@0: strcat(buf, ename); aoqi@0: jclass cls = env->FindClass(buf); aoqi@0: if (env->ExceptionCheck()) { aoqi@0: env->ExceptionClear(); aoqi@0: tty->print_cr("Unsafe: cannot throw %s because FindClass has failed", buf); aoqi@0: return; aoqi@0: } aoqi@0: char* msg = NULL; aoqi@0: env->ThrowNew(cls, msg); aoqi@0: } aoqi@0: aoqi@0: static jclass Unsafe_DefineClass_impl(JNIEnv *env, jstring name, jbyteArray data, int offset, int length, jobject loader, jobject pd) { aoqi@0: { aoqi@0: // Code lifted from JDK 1.3 ClassLoader.c aoqi@0: aoqi@0: jbyte *body; aoqi@0: char *utfName; aoqi@0: jclass result = 0; aoqi@0: char buf[128]; aoqi@0: aoqi@0: if (UsePerfData) { aoqi@0: ClassLoader::unsafe_defineClassCallCounter()->inc(); aoqi@0: } aoqi@0: aoqi@0: if (data == NULL) { aoqi@0: throw_new(env, "NullPointerException"); aoqi@0: return 0; aoqi@0: } aoqi@0: aoqi@0: /* Work around 4153825. malloc crashes on Solaris when passed a aoqi@0: * negative size. aoqi@0: */ aoqi@0: if (length < 0) { aoqi@0: throw_new(env, "ArrayIndexOutOfBoundsException"); aoqi@0: return 0; aoqi@0: } aoqi@0: aoqi@0: body = NEW_C_HEAP_ARRAY(jbyte, length, mtInternal); aoqi@0: aoqi@0: if (body == 0) { aoqi@0: throw_new(env, "OutOfMemoryError"); aoqi@0: return 0; aoqi@0: } aoqi@0: aoqi@0: env->GetByteArrayRegion(data, offset, length, body); aoqi@0: aoqi@0: if (env->ExceptionOccurred()) aoqi@0: goto free_body; aoqi@0: aoqi@0: if (name != NULL) { aoqi@0: uint len = env->GetStringUTFLength(name); aoqi@0: int unicode_len = env->GetStringLength(name); aoqi@0: if (len >= sizeof(buf)) { aoqi@0: utfName = NEW_C_HEAP_ARRAY(char, len + 1, mtInternal); aoqi@0: if (utfName == NULL) { aoqi@0: throw_new(env, "OutOfMemoryError"); aoqi@0: goto free_body; aoqi@0: } aoqi@0: } else { aoqi@0: utfName = buf; aoqi@0: } aoqi@0: env->GetStringUTFRegion(name, 0, unicode_len, utfName); aoqi@0: //VerifyFixClassname(utfName); aoqi@0: for (uint i = 0; i < len; i++) { aoqi@0: if (utfName[i] == '.') utfName[i] = '/'; aoqi@0: } aoqi@0: } else { aoqi@0: utfName = NULL; aoqi@0: } aoqi@0: aoqi@0: result = JVM_DefineClass(env, utfName, loader, body, length, pd); aoqi@0: aoqi@0: if (utfName && utfName != buf) aoqi@0: FREE_C_HEAP_ARRAY(char, utfName, mtInternal); aoqi@0: aoqi@0: free_body: aoqi@0: FREE_C_HEAP_ARRAY(jbyte, body, mtInternal); aoqi@0: return result; aoqi@0: } aoqi@0: } aoqi@0: aoqi@0: aoqi@0: UNSAFE_ENTRY(jclass, Unsafe_DefineClass(JNIEnv *env, jobject unsafe, jstring name, jbyteArray data, int offset, int length, jobject loader, jobject pd)) aoqi@0: UnsafeWrapper("Unsafe_DefineClass"); aoqi@0: { aoqi@0: ThreadToNativeFromVM ttnfv(thread); aoqi@0: return Unsafe_DefineClass_impl(env, name, data, offset, length, loader, pd); aoqi@0: } aoqi@0: UNSAFE_END aoqi@0: aoqi@0: aoqi@0: UNSAFE_ENTRY(jclass, Unsafe_DefineClass0(JNIEnv *env, jobject unsafe, jstring name, jbyteArray data, int offset, int length)) aoqi@0: UnsafeWrapper("Unsafe_DefineClass"); aoqi@0: { aoqi@0: ThreadToNativeFromVM ttnfv(thread); aoqi@0: aoqi@0: int depthFromDefineClass0 = 1; aoqi@0: jclass caller = JVM_GetCallerClass(env, depthFromDefineClass0); aoqi@0: jobject loader = (caller == NULL) ? NULL : JVM_GetClassLoader(env, caller); aoqi@0: jobject pd = (caller == NULL) ? NULL : JVM_GetProtectionDomain(env, caller); aoqi@0: aoqi@0: return Unsafe_DefineClass_impl(env, name, data, offset, length, loader, pd); aoqi@0: } aoqi@0: UNSAFE_END aoqi@0: aoqi@0: aoqi@0: #define DAC_Args CLS"[B["OBJ aoqi@0: // define a class but do not make it known to the class loader or system dictionary aoqi@0: // - host_class: supplies context for linkage, access control, protection domain, and class loader aoqi@0: // - data: bytes of a class file, a raw memory address (length gives the number of bytes) aoqi@0: // - cp_patches: where non-null entries exist, they replace corresponding CP entries in data aoqi@0: aoqi@0: // When you load an anonymous class U, it works as if you changed its name just before loading, aoqi@0: // to a name that you will never use again. Since the name is lost, no other class can directly aoqi@0: // link to any member of U. Just after U is loaded, the only way to use it is reflectively, aoqi@0: // through java.lang.Class methods like Class.newInstance. aoqi@0: aoqi@0: // Access checks for linkage sites within U continue to follow the same rules as for named classes. aoqi@0: // The package of an anonymous class is given by the package qualifier on the name under which it was loaded. aoqi@0: // An anonymous class also has special privileges to access any member of its host class. aoqi@0: // This is the main reason why this loading operation is unsafe. The purpose of this is to aoqi@0: // allow language implementations to simulate "open classes"; a host class in effect gets aoqi@0: // new code when an anonymous class is loaded alongside it. A less convenient but more aoqi@0: // standard way to do this is with reflection, which can also be set to ignore access aoqi@0: // restrictions. aoqi@0: aoqi@0: // Access into an anonymous class is possible only through reflection. Therefore, there aoqi@0: // are no special access rules for calling into an anonymous class. The relaxed access aoqi@0: // rule for the host class is applied in the opposite direction: A host class reflectively aoqi@0: // access one of its anonymous classes. aoqi@0: aoqi@0: // If you load the same bytecodes twice, you get two different classes. You can reload aoqi@0: // the same bytecodes with or without varying CP patches. aoqi@0: aoqi@0: // By using the CP patching array, you can have a new anonymous class U2 refer to an older one U1. aoqi@0: // The bytecodes for U2 should refer to U1 by a symbolic name (doesn't matter what the name is). aoqi@0: // The CONSTANT_Class entry for that name can be patched to refer directly to U1. aoqi@0: aoqi@0: // This allows, for example, U2 to use U1 as a superclass or super-interface, or as aoqi@0: // an outer class (so that U2 is an anonymous inner class of anonymous U1). aoqi@0: // It is not possible for a named class, or an older anonymous class, to refer by aoqi@0: // name (via its CP) to a newer anonymous class. aoqi@0: aoqi@0: // CP patching may also be used to modify (i.e., hack) the names of methods, classes, aoqi@0: // or type descriptors used in the loaded anonymous class. aoqi@0: aoqi@0: // Finally, CP patching may be used to introduce "live" objects into the constant pool, aoqi@0: // instead of "dead" strings. A compiled statement like println((Object)"hello") can aoqi@0: // be changed to println(greeting), where greeting is an arbitrary object created before aoqi@0: // the anonymous class is loaded. This is useful in dynamic languages, in which aoqi@0: // various kinds of metaobjects must be introduced as constants into bytecode. aoqi@0: // Note the cast (Object), which tells the verifier to expect an arbitrary object, aoqi@0: // not just a literal string. For such ldc instructions, the verifier uses the aoqi@0: // type Object instead of String, if the loaded constant is not in fact a String. aoqi@0: aoqi@0: static instanceKlassHandle aoqi@0: Unsafe_DefineAnonymousClass_impl(JNIEnv *env, aoqi@0: jclass host_class, jbyteArray data, jobjectArray cp_patches_jh, aoqi@0: HeapWord* *temp_alloc, aoqi@0: TRAPS) { aoqi@0: aoqi@0: if (UsePerfData) { aoqi@0: ClassLoader::unsafe_defineClassCallCounter()->inc(); aoqi@0: } aoqi@0: aoqi@0: if (data == NULL) { aoqi@0: THROW_0(vmSymbols::java_lang_NullPointerException()); aoqi@0: } aoqi@0: aoqi@0: jint length = typeArrayOop(JNIHandles::resolve_non_null(data))->length(); aoqi@0: jint word_length = (length + sizeof(HeapWord)-1) / sizeof(HeapWord); aoqi@0: HeapWord* body = NEW_C_HEAP_ARRAY(HeapWord, word_length, mtInternal); aoqi@0: if (body == NULL) { aoqi@0: THROW_0(vmSymbols::java_lang_OutOfMemoryError()); aoqi@0: } aoqi@0: aoqi@0: // caller responsible to free it: aoqi@0: (*temp_alloc) = body; aoqi@0: aoqi@0: { aoqi@0: jbyte* array_base = typeArrayOop(JNIHandles::resolve_non_null(data))->byte_at_addr(0); aoqi@0: Copy::conjoint_words((HeapWord*) array_base, body, word_length); aoqi@0: } aoqi@0: aoqi@0: u1* class_bytes = (u1*) body; aoqi@0: int class_bytes_length = (int) length; aoqi@0: if (class_bytes_length < 0) class_bytes_length = 0; aoqi@0: if (class_bytes == NULL aoqi@0: || host_class == NULL aoqi@0: || length != class_bytes_length) aoqi@0: THROW_0(vmSymbols::java_lang_IllegalArgumentException()); aoqi@0: aoqi@0: objArrayHandle cp_patches_h; aoqi@0: if (cp_patches_jh != NULL) { aoqi@0: oop p = JNIHandles::resolve_non_null(cp_patches_jh); aoqi@0: if (!p->is_objArray()) aoqi@0: THROW_0(vmSymbols::java_lang_IllegalArgumentException()); aoqi@0: cp_patches_h = objArrayHandle(THREAD, (objArrayOop)p); aoqi@0: } aoqi@0: aoqi@0: KlassHandle host_klass(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(host_class))); aoqi@0: const char* host_source = host_klass->external_name(); aoqi@0: Handle host_loader(THREAD, host_klass->class_loader()); aoqi@0: Handle host_domain(THREAD, host_klass->protection_domain()); aoqi@0: aoqi@0: GrowableArray* cp_patches = NULL; aoqi@0: if (cp_patches_h.not_null()) { aoqi@0: int alen = cp_patches_h->length(); aoqi@0: for (int i = alen-1; i >= 0; i--) { aoqi@0: oop p = cp_patches_h->obj_at(i); aoqi@0: if (p != NULL) { aoqi@0: Handle patch(THREAD, p); aoqi@0: if (cp_patches == NULL) aoqi@0: cp_patches = new GrowableArray(i+1, i+1, Handle()); aoqi@0: cp_patches->at_put(i, patch); aoqi@0: } aoqi@0: } aoqi@0: } aoqi@0: aoqi@0: ClassFileStream st(class_bytes, class_bytes_length, (char*) host_source); aoqi@0: aoqi@0: instanceKlassHandle anon_klass; aoqi@0: { aoqi@0: Symbol* no_class_name = NULL; aoqi@0: Klass* anonk = SystemDictionary::parse_stream(no_class_name, aoqi@0: host_loader, host_domain, aoqi@0: &st, host_klass, cp_patches, aoqi@0: CHECK_NULL); aoqi@0: if (anonk == NULL) return NULL; aoqi@0: anon_klass = instanceKlassHandle(THREAD, anonk); aoqi@0: } aoqi@0: aoqi@0: return anon_klass; aoqi@0: } aoqi@0: aoqi@0: UNSAFE_ENTRY(jclass, Unsafe_DefineAnonymousClass(JNIEnv *env, jobject unsafe, jclass host_class, jbyteArray data, jobjectArray cp_patches_jh)) aoqi@0: { aoqi@0: instanceKlassHandle anon_klass; aoqi@0: jobject res_jh = NULL; aoqi@0: aoqi@0: UnsafeWrapper("Unsafe_DefineAnonymousClass"); aoqi@0: ResourceMark rm(THREAD); aoqi@0: aoqi@0: HeapWord* temp_alloc = NULL; aoqi@0: aoqi@0: anon_klass = Unsafe_DefineAnonymousClass_impl(env, host_class, data, aoqi@0: cp_patches_jh, aoqi@0: &temp_alloc, THREAD); aoqi@0: if (anon_klass() != NULL) aoqi@0: res_jh = JNIHandles::make_local(env, anon_klass->java_mirror()); aoqi@0: aoqi@0: // try/finally clause: aoqi@0: if (temp_alloc != NULL) { aoqi@0: FREE_C_HEAP_ARRAY(HeapWord, temp_alloc, mtInternal); aoqi@0: } aoqi@0: aoqi@0: // The anonymous class loader data has been artificially been kept alive to aoqi@0: // this point. The mirror and any instances of this class have to keep aoqi@0: // it alive afterwards. aoqi@0: if (anon_klass() != NULL) { aoqi@0: anon_klass->class_loader_data()->set_keep_alive(false); aoqi@0: } aoqi@0: aoqi@0: // let caller initialize it as needed... aoqi@0: aoqi@0: return (jclass) res_jh; aoqi@0: } aoqi@0: UNSAFE_END aoqi@0: aoqi@0: aoqi@0: aoqi@0: UNSAFE_ENTRY(void, Unsafe_MonitorEnter(JNIEnv *env, jobject unsafe, jobject jobj)) aoqi@0: UnsafeWrapper("Unsafe_MonitorEnter"); aoqi@0: { aoqi@0: if (jobj == NULL) { aoqi@0: THROW(vmSymbols::java_lang_NullPointerException()); aoqi@0: } aoqi@0: Handle obj(thread, JNIHandles::resolve_non_null(jobj)); aoqi@0: ObjectSynchronizer::jni_enter(obj, CHECK); aoqi@0: } aoqi@0: UNSAFE_END aoqi@0: aoqi@0: aoqi@0: UNSAFE_ENTRY(jboolean, Unsafe_TryMonitorEnter(JNIEnv *env, jobject unsafe, jobject jobj)) aoqi@0: UnsafeWrapper("Unsafe_TryMonitorEnter"); aoqi@0: { aoqi@0: if (jobj == NULL) { aoqi@0: THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); aoqi@0: } aoqi@0: Handle obj(thread, JNIHandles::resolve_non_null(jobj)); aoqi@0: bool res = ObjectSynchronizer::jni_try_enter(obj, CHECK_0); aoqi@0: return (res ? JNI_TRUE : JNI_FALSE); aoqi@0: } aoqi@0: UNSAFE_END aoqi@0: aoqi@0: aoqi@0: UNSAFE_ENTRY(void, Unsafe_MonitorExit(JNIEnv *env, jobject unsafe, jobject jobj)) aoqi@0: UnsafeWrapper("Unsafe_MonitorExit"); aoqi@0: { aoqi@0: if (jobj == NULL) { aoqi@0: THROW(vmSymbols::java_lang_NullPointerException()); aoqi@0: } aoqi@0: Handle obj(THREAD, JNIHandles::resolve_non_null(jobj)); aoqi@0: ObjectSynchronizer::jni_exit(obj(), CHECK); aoqi@0: } aoqi@0: UNSAFE_END aoqi@0: aoqi@0: aoqi@0: UNSAFE_ENTRY(void, Unsafe_ThrowException(JNIEnv *env, jobject unsafe, jthrowable thr)) aoqi@0: UnsafeWrapper("Unsafe_ThrowException"); aoqi@0: { aoqi@0: ThreadToNativeFromVM ttnfv(thread); aoqi@0: env->Throw(thr); aoqi@0: } aoqi@0: UNSAFE_END aoqi@0: aoqi@0: // JSR166 ------------------------------------------------------------------ aoqi@0: aoqi@0: UNSAFE_ENTRY(jboolean, Unsafe_CompareAndSwapObject(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jobject e_h, jobject x_h)) aoqi@0: UnsafeWrapper("Unsafe_CompareAndSwapObject"); aoqi@0: oop x = JNIHandles::resolve(x_h); aoqi@0: oop e = JNIHandles::resolve(e_h); aoqi@0: oop p = JNIHandles::resolve(obj); aoqi@0: HeapWord* addr = (HeapWord *)index_oop_from_field_offset_long(p, offset); aoqi@0: oop res = oopDesc::atomic_compare_exchange_oop(x, addr, e, true); aoqi@0: jboolean success = (res == e); aoqi@0: if (success) aoqi@0: update_barrier_set((void*)addr, x); aoqi@0: return success; aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(jboolean, Unsafe_CompareAndSwapInt(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jint e, jint x)) aoqi@0: UnsafeWrapper("Unsafe_CompareAndSwapInt"); aoqi@0: oop p = JNIHandles::resolve(obj); aoqi@0: jint* addr = (jint *) index_oop_from_field_offset_long(p, offset); aoqi@0: return (jint)(Atomic::cmpxchg(x, addr, e)) == e; aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(jboolean, Unsafe_CompareAndSwapLong(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jlong e, jlong x)) aoqi@0: UnsafeWrapper("Unsafe_CompareAndSwapLong"); aoqi@0: Handle p (THREAD, JNIHandles::resolve(obj)); aoqi@0: jlong* addr = (jlong*)(index_oop_from_field_offset_long(p(), offset)); aoqi@0: if (VM_Version::supports_cx8()) aoqi@0: return (jlong)(Atomic::cmpxchg(x, addr, e)) == e; aoqi@0: else { aoqi@0: jboolean success = false; aoqi@0: ObjectLocker ol(p, THREAD); aoqi@0: if (*addr == e) { *addr = x; success = true; } aoqi@0: return success; aoqi@0: } aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(void, Unsafe_Park(JNIEnv *env, jobject unsafe, jboolean isAbsolute, jlong time)) aoqi@0: UnsafeWrapper("Unsafe_Park"); aoqi@0: EventThreadPark event; aoqi@0: #ifndef USDT2 aoqi@0: HS_DTRACE_PROBE3(hotspot, thread__park__begin, thread->parker(), (int) isAbsolute, time); aoqi@0: #else /* USDT2 */ aoqi@0: HOTSPOT_THREAD_PARK_BEGIN( aoqi@0: (uintptr_t) thread->parker(), (int) isAbsolute, time); aoqi@0: #endif /* USDT2 */ aoqi@0: JavaThreadParkedState jtps(thread, time != 0); aoqi@0: thread->parker()->park(isAbsolute != 0, time); aoqi@0: #ifndef USDT2 aoqi@0: HS_DTRACE_PROBE1(hotspot, thread__park__end, thread->parker()); aoqi@0: #else /* USDT2 */ aoqi@0: HOTSPOT_THREAD_PARK_END( aoqi@0: (uintptr_t) thread->parker()); aoqi@0: #endif /* USDT2 */ aoqi@0: if (event.should_commit()) { aoqi@0: oop obj = thread->current_park_blocker(); aoqi@0: event.set_klass((obj != NULL) ? obj->klass() : NULL); aoqi@0: event.set_timeout(time); aoqi@0: event.set_address((obj != NULL) ? (TYPE_ADDRESS) cast_from_oop(obj) : 0); aoqi@0: event.commit(); aoqi@0: } aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(void, Unsafe_Unpark(JNIEnv *env, jobject unsafe, jobject jthread)) aoqi@0: UnsafeWrapper("Unsafe_Unpark"); aoqi@0: Parker* p = NULL; aoqi@0: if (jthread != NULL) { aoqi@0: oop java_thread = JNIHandles::resolve_non_null(jthread); aoqi@0: if (java_thread != NULL) { aoqi@0: jlong lp = java_lang_Thread::park_event(java_thread); aoqi@0: if (lp != 0) { aoqi@0: // This cast is OK even though the jlong might have been read aoqi@0: // non-atomically on 32bit systems, since there, one word will aoqi@0: // always be zero anyway and the value set is always the same aoqi@0: p = (Parker*)addr_from_java(lp); aoqi@0: } else { aoqi@0: // Grab lock if apparently null or using older version of library aoqi@0: MutexLocker mu(Threads_lock); aoqi@0: java_thread = JNIHandles::resolve_non_null(jthread); aoqi@0: if (java_thread != NULL) { aoqi@0: JavaThread* thr = java_lang_Thread::thread(java_thread); aoqi@0: if (thr != NULL) { aoqi@0: p = thr->parker(); aoqi@0: if (p != NULL) { // Bind to Java thread for next time. aoqi@0: java_lang_Thread::set_park_event(java_thread, addr_to_java(p)); aoqi@0: } aoqi@0: } aoqi@0: } aoqi@0: } aoqi@0: } aoqi@0: } aoqi@0: if (p != NULL) { aoqi@0: #ifndef USDT2 aoqi@0: HS_DTRACE_PROBE1(hotspot, thread__unpark, p); aoqi@0: #else /* USDT2 */ aoqi@0: HOTSPOT_THREAD_UNPARK( aoqi@0: (uintptr_t) p); aoqi@0: #endif /* USDT2 */ aoqi@0: p->unpark(); aoqi@0: } aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(jint, Unsafe_Loadavg(JNIEnv *env, jobject unsafe, jdoubleArray loadavg, jint nelem)) aoqi@0: UnsafeWrapper("Unsafe_Loadavg"); aoqi@0: const int max_nelem = 3; aoqi@0: double la[max_nelem]; aoqi@0: jint ret; aoqi@0: aoqi@0: typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(loadavg)); aoqi@0: assert(a->is_typeArray(), "must be type array"); aoqi@0: aoqi@0: if (nelem < 0 || nelem > max_nelem || a->length() < nelem) { aoqi@0: ThreadToNativeFromVM ttnfv(thread); aoqi@0: throw_new(env, "ArrayIndexOutOfBoundsException"); aoqi@0: return -1; aoqi@0: } aoqi@0: aoqi@0: ret = os::loadavg(la, nelem); aoqi@0: if (ret == -1) return -1; aoqi@0: aoqi@0: // if successful, ret is the number of samples actually retrieved. aoqi@0: assert(ret >= 0 && ret <= max_nelem, "Unexpected loadavg return value"); aoqi@0: switch(ret) { aoqi@0: case 3: a->double_at_put(2, (jdouble)la[2]); // fall through aoqi@0: case 2: a->double_at_put(1, (jdouble)la[1]); // fall through aoqi@0: case 1: a->double_at_put(0, (jdouble)la[0]); break; aoqi@0: } aoqi@0: return ret; aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(void, Unsafe_PrefetchRead(JNIEnv* env, jclass ignored, jobject obj, jlong offset)) aoqi@0: UnsafeWrapper("Unsafe_PrefetchRead"); aoqi@0: oop p = JNIHandles::resolve(obj); aoqi@0: void* addr = index_oop_from_field_offset_long(p, 0); aoqi@0: Prefetch::read(addr, (intx)offset); aoqi@0: UNSAFE_END aoqi@0: aoqi@0: UNSAFE_ENTRY(void, Unsafe_PrefetchWrite(JNIEnv* env, jclass ignored, jobject obj, jlong offset)) aoqi@0: UnsafeWrapper("Unsafe_PrefetchWrite"); aoqi@0: oop p = JNIHandles::resolve(obj); aoqi@0: void* addr = index_oop_from_field_offset_long(p, 0); aoqi@0: Prefetch::write(addr, (intx)offset); aoqi@0: UNSAFE_END aoqi@0: aoqi@0: aoqi@0: /// JVM_RegisterUnsafeMethods aoqi@0: aoqi@0: #define ADR "J" aoqi@0: aoqi@0: #define LANG "Ljava/lang/" aoqi@0: aoqi@0: #define OBJ LANG"Object;" aoqi@0: #define CLS LANG"Class;" aoqi@0: #define CTR LANG"reflect/Constructor;" aoqi@0: #define FLD LANG"reflect/Field;" aoqi@0: #define MTH LANG"reflect/Method;" aoqi@0: #define THR LANG"Throwable;" aoqi@0: aoqi@0: #define DC0_Args LANG"String;[BII" aoqi@0: #define DC_Args DC0_Args LANG"ClassLoader;" "Ljava/security/ProtectionDomain;" aoqi@0: aoqi@0: #define CC (char*) /*cast a literal from (const char*)*/ aoqi@0: #define FN_PTR(f) CAST_FROM_FN_PTR(void*, &f) aoqi@0: aoqi@0: // define deprecated accessors for compabitility with 1.4.0 aoqi@0: #define DECLARE_GETSETOOP_140(Boolean, Z) \ aoqi@0: {CC"get"#Boolean, CC"("OBJ"I)"#Z, FN_PTR(Unsafe_Get##Boolean##140)}, \ aoqi@0: {CC"put"#Boolean, CC"("OBJ"I"#Z")V", FN_PTR(Unsafe_Set##Boolean##140)} aoqi@0: aoqi@0: // Note: In 1.4.1, getObject and kin take both int and long offsets. aoqi@0: #define DECLARE_GETSETOOP_141(Boolean, Z) \ aoqi@0: {CC"get"#Boolean, CC"("OBJ"J)"#Z, FN_PTR(Unsafe_Get##Boolean)}, \ aoqi@0: {CC"put"#Boolean, CC"("OBJ"J"#Z")V", FN_PTR(Unsafe_Set##Boolean)} aoqi@0: aoqi@0: // Note: In 1.5.0, there are volatile versions too aoqi@0: #define DECLARE_GETSETOOP(Boolean, Z) \ aoqi@0: {CC"get"#Boolean, CC"("OBJ"J)"#Z, FN_PTR(Unsafe_Get##Boolean)}, \ aoqi@0: {CC"put"#Boolean, CC"("OBJ"J"#Z")V", FN_PTR(Unsafe_Set##Boolean)}, \ aoqi@0: {CC"get"#Boolean"Volatile", CC"("OBJ"J)"#Z, FN_PTR(Unsafe_Get##Boolean##Volatile)}, \ aoqi@0: {CC"put"#Boolean"Volatile", CC"("OBJ"J"#Z")V", FN_PTR(Unsafe_Set##Boolean##Volatile)} aoqi@0: aoqi@0: aoqi@0: #define DECLARE_GETSETNATIVE(Byte, B) \ aoqi@0: {CC"get"#Byte, CC"("ADR")"#B, FN_PTR(Unsafe_GetNative##Byte)}, \ aoqi@0: {CC"put"#Byte, CC"("ADR#B")V", FN_PTR(Unsafe_SetNative##Byte)} aoqi@0: aoqi@0: aoqi@0: aoqi@0: // These are the methods for 1.4.0 aoqi@0: static JNINativeMethod methods_140[] = { aoqi@0: {CC"getObject", CC"("OBJ"I)"OBJ"", FN_PTR(Unsafe_GetObject140)}, aoqi@0: {CC"putObject", CC"("OBJ"I"OBJ")V", FN_PTR(Unsafe_SetObject140)}, aoqi@0: aoqi@0: DECLARE_GETSETOOP_140(Boolean, Z), aoqi@0: DECLARE_GETSETOOP_140(Byte, B), aoqi@0: DECLARE_GETSETOOP_140(Short, S), aoqi@0: DECLARE_GETSETOOP_140(Char, C), aoqi@0: DECLARE_GETSETOOP_140(Int, I), aoqi@0: DECLARE_GETSETOOP_140(Long, J), aoqi@0: DECLARE_GETSETOOP_140(Float, F), aoqi@0: DECLARE_GETSETOOP_140(Double, D), aoqi@0: aoqi@0: DECLARE_GETSETNATIVE(Byte, B), aoqi@0: DECLARE_GETSETNATIVE(Short, S), aoqi@0: DECLARE_GETSETNATIVE(Char, C), aoqi@0: DECLARE_GETSETNATIVE(Int, I), aoqi@0: DECLARE_GETSETNATIVE(Long, J), aoqi@0: DECLARE_GETSETNATIVE(Float, F), aoqi@0: DECLARE_GETSETNATIVE(Double, D), aoqi@0: aoqi@0: {CC"getAddress", CC"("ADR")"ADR, FN_PTR(Unsafe_GetNativeAddress)}, aoqi@0: {CC"putAddress", CC"("ADR""ADR")V", FN_PTR(Unsafe_SetNativeAddress)}, aoqi@0: aoqi@0: {CC"allocateMemory", CC"(J)"ADR, FN_PTR(Unsafe_AllocateMemory)}, aoqi@0: {CC"reallocateMemory", CC"("ADR"J)"ADR, FN_PTR(Unsafe_ReallocateMemory)}, aoqi@0: {CC"freeMemory", CC"("ADR")V", FN_PTR(Unsafe_FreeMemory)}, aoqi@0: aoqi@0: {CC"fieldOffset", CC"("FLD")I", FN_PTR(Unsafe_FieldOffset)}, aoqi@0: {CC"staticFieldBase", CC"("CLS")"OBJ, FN_PTR(Unsafe_StaticFieldBaseFromClass)}, aoqi@0: {CC"ensureClassInitialized",CC"("CLS")V", FN_PTR(Unsafe_EnsureClassInitialized)}, aoqi@0: {CC"arrayBaseOffset", CC"("CLS")I", FN_PTR(Unsafe_ArrayBaseOffset)}, aoqi@0: {CC"arrayIndexScale", CC"("CLS")I", FN_PTR(Unsafe_ArrayIndexScale)}, aoqi@0: {CC"addressSize", CC"()I", FN_PTR(Unsafe_AddressSize)}, aoqi@0: {CC"pageSize", CC"()I", FN_PTR(Unsafe_PageSize)}, aoqi@0: aoqi@0: {CC"defineClass", CC"("DC0_Args")"CLS, FN_PTR(Unsafe_DefineClass0)}, aoqi@0: {CC"defineClass", CC"("DC_Args")"CLS, FN_PTR(Unsafe_DefineClass)}, aoqi@0: {CC"allocateInstance", CC"("CLS")"OBJ, FN_PTR(Unsafe_AllocateInstance)}, aoqi@0: {CC"monitorEnter", CC"("OBJ")V", FN_PTR(Unsafe_MonitorEnter)}, aoqi@0: {CC"monitorExit", CC"("OBJ")V", FN_PTR(Unsafe_MonitorExit)}, aoqi@0: {CC"throwException", CC"("THR")V", FN_PTR(Unsafe_ThrowException)} aoqi@0: }; aoqi@0: aoqi@0: // These are the methods prior to the JSR 166 changes in 1.5.0 aoqi@0: static JNINativeMethod methods_141[] = { aoqi@0: {CC"getObject", CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObject)}, aoqi@0: {CC"putObject", CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObject)}, aoqi@0: aoqi@0: DECLARE_GETSETOOP_141(Boolean, Z), aoqi@0: DECLARE_GETSETOOP_141(Byte, B), aoqi@0: DECLARE_GETSETOOP_141(Short, S), aoqi@0: DECLARE_GETSETOOP_141(Char, C), aoqi@0: DECLARE_GETSETOOP_141(Int, I), aoqi@0: DECLARE_GETSETOOP_141(Long, J), aoqi@0: DECLARE_GETSETOOP_141(Float, F), aoqi@0: DECLARE_GETSETOOP_141(Double, D), aoqi@0: aoqi@0: DECLARE_GETSETNATIVE(Byte, B), aoqi@0: DECLARE_GETSETNATIVE(Short, S), aoqi@0: DECLARE_GETSETNATIVE(Char, C), aoqi@0: DECLARE_GETSETNATIVE(Int, I), aoqi@0: DECLARE_GETSETNATIVE(Long, J), aoqi@0: DECLARE_GETSETNATIVE(Float, F), aoqi@0: DECLARE_GETSETNATIVE(Double, D), aoqi@0: aoqi@0: {CC"getAddress", CC"("ADR")"ADR, FN_PTR(Unsafe_GetNativeAddress)}, aoqi@0: {CC"putAddress", CC"("ADR""ADR")V", FN_PTR(Unsafe_SetNativeAddress)}, aoqi@0: aoqi@0: {CC"allocateMemory", CC"(J)"ADR, FN_PTR(Unsafe_AllocateMemory)}, aoqi@0: {CC"reallocateMemory", CC"("ADR"J)"ADR, FN_PTR(Unsafe_ReallocateMemory)}, aoqi@0: {CC"freeMemory", CC"("ADR")V", FN_PTR(Unsafe_FreeMemory)}, aoqi@0: aoqi@0: {CC"objectFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_ObjectFieldOffset)}, aoqi@0: {CC"staticFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_StaticFieldOffset)}, aoqi@0: {CC"staticFieldBase", CC"("FLD")"OBJ, FN_PTR(Unsafe_StaticFieldBaseFromField)}, aoqi@0: {CC"ensureClassInitialized",CC"("CLS")V", FN_PTR(Unsafe_EnsureClassInitialized)}, aoqi@0: {CC"arrayBaseOffset", CC"("CLS")I", FN_PTR(Unsafe_ArrayBaseOffset)}, aoqi@0: {CC"arrayIndexScale", CC"("CLS")I", FN_PTR(Unsafe_ArrayIndexScale)}, aoqi@0: {CC"addressSize", CC"()I", FN_PTR(Unsafe_AddressSize)}, aoqi@0: {CC"pageSize", CC"()I", FN_PTR(Unsafe_PageSize)}, aoqi@0: aoqi@0: {CC"defineClass", CC"("DC0_Args")"CLS, FN_PTR(Unsafe_DefineClass0)}, aoqi@0: {CC"defineClass", CC"("DC_Args")"CLS, FN_PTR(Unsafe_DefineClass)}, aoqi@0: {CC"allocateInstance", CC"("CLS")"OBJ, FN_PTR(Unsafe_AllocateInstance)}, aoqi@0: {CC"monitorEnter", CC"("OBJ")V", FN_PTR(Unsafe_MonitorEnter)}, aoqi@0: {CC"monitorExit", CC"("OBJ")V", FN_PTR(Unsafe_MonitorExit)}, aoqi@0: {CC"throwException", CC"("THR")V", FN_PTR(Unsafe_ThrowException)} aoqi@0: aoqi@0: }; aoqi@0: aoqi@0: // These are the methods prior to the JSR 166 changes in 1.6.0 aoqi@0: static JNINativeMethod methods_15[] = { aoqi@0: {CC"getObject", CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObject)}, aoqi@0: {CC"putObject", CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObject)}, aoqi@0: {CC"getObjectVolatile",CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObjectVolatile)}, aoqi@0: {CC"putObjectVolatile",CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObjectVolatile)}, aoqi@0: aoqi@0: aoqi@0: DECLARE_GETSETOOP(Boolean, Z), aoqi@0: DECLARE_GETSETOOP(Byte, B), aoqi@0: DECLARE_GETSETOOP(Short, S), aoqi@0: DECLARE_GETSETOOP(Char, C), aoqi@0: DECLARE_GETSETOOP(Int, I), aoqi@0: DECLARE_GETSETOOP(Long, J), aoqi@0: DECLARE_GETSETOOP(Float, F), aoqi@0: DECLARE_GETSETOOP(Double, D), aoqi@0: aoqi@0: DECLARE_GETSETNATIVE(Byte, B), aoqi@0: DECLARE_GETSETNATIVE(Short, S), aoqi@0: DECLARE_GETSETNATIVE(Char, C), aoqi@0: DECLARE_GETSETNATIVE(Int, I), aoqi@0: DECLARE_GETSETNATIVE(Long, J), aoqi@0: DECLARE_GETSETNATIVE(Float, F), aoqi@0: DECLARE_GETSETNATIVE(Double, D), aoqi@0: aoqi@0: {CC"getAddress", CC"("ADR")"ADR, FN_PTR(Unsafe_GetNativeAddress)}, aoqi@0: {CC"putAddress", CC"("ADR""ADR")V", FN_PTR(Unsafe_SetNativeAddress)}, aoqi@0: aoqi@0: {CC"allocateMemory", CC"(J)"ADR, FN_PTR(Unsafe_AllocateMemory)}, aoqi@0: {CC"reallocateMemory", CC"("ADR"J)"ADR, FN_PTR(Unsafe_ReallocateMemory)}, aoqi@0: {CC"freeMemory", CC"("ADR")V", FN_PTR(Unsafe_FreeMemory)}, aoqi@0: aoqi@0: {CC"objectFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_ObjectFieldOffset)}, aoqi@0: {CC"staticFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_StaticFieldOffset)}, aoqi@0: {CC"staticFieldBase", CC"("FLD")"OBJ, FN_PTR(Unsafe_StaticFieldBaseFromField)}, aoqi@0: {CC"ensureClassInitialized",CC"("CLS")V", FN_PTR(Unsafe_EnsureClassInitialized)}, aoqi@0: {CC"arrayBaseOffset", CC"("CLS")I", FN_PTR(Unsafe_ArrayBaseOffset)}, aoqi@0: {CC"arrayIndexScale", CC"("CLS")I", FN_PTR(Unsafe_ArrayIndexScale)}, aoqi@0: {CC"addressSize", CC"()I", FN_PTR(Unsafe_AddressSize)}, aoqi@0: {CC"pageSize", CC"()I", FN_PTR(Unsafe_PageSize)}, aoqi@0: aoqi@0: {CC"defineClass", CC"("DC0_Args")"CLS, FN_PTR(Unsafe_DefineClass0)}, aoqi@0: {CC"defineClass", CC"("DC_Args")"CLS, FN_PTR(Unsafe_DefineClass)}, aoqi@0: {CC"allocateInstance", CC"("CLS")"OBJ, FN_PTR(Unsafe_AllocateInstance)}, aoqi@0: {CC"monitorEnter", CC"("OBJ")V", FN_PTR(Unsafe_MonitorEnter)}, aoqi@0: {CC"monitorExit", CC"("OBJ")V", FN_PTR(Unsafe_MonitorExit)}, aoqi@0: {CC"throwException", CC"("THR")V", FN_PTR(Unsafe_ThrowException)}, aoqi@0: {CC"compareAndSwapObject", CC"("OBJ"J"OBJ""OBJ")Z", FN_PTR(Unsafe_CompareAndSwapObject)}, aoqi@0: {CC"compareAndSwapInt", CC"("OBJ"J""I""I"")Z", FN_PTR(Unsafe_CompareAndSwapInt)}, aoqi@0: {CC"compareAndSwapLong", CC"("OBJ"J""J""J"")Z", FN_PTR(Unsafe_CompareAndSwapLong)}, aoqi@0: {CC"park", CC"(ZJ)V", FN_PTR(Unsafe_Park)}, aoqi@0: {CC"unpark", CC"("OBJ")V", FN_PTR(Unsafe_Unpark)} aoqi@0: aoqi@0: }; aoqi@0: aoqi@0: // These are the methods for 1.6.0 and 1.7.0 aoqi@0: static JNINativeMethod methods_16[] = { aoqi@0: {CC"getObject", CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObject)}, aoqi@0: {CC"putObject", CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObject)}, aoqi@0: {CC"getObjectVolatile",CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObjectVolatile)}, aoqi@0: {CC"putObjectVolatile",CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObjectVolatile)}, aoqi@0: aoqi@0: DECLARE_GETSETOOP(Boolean, Z), aoqi@0: DECLARE_GETSETOOP(Byte, B), aoqi@0: DECLARE_GETSETOOP(Short, S), aoqi@0: DECLARE_GETSETOOP(Char, C), aoqi@0: DECLARE_GETSETOOP(Int, I), aoqi@0: DECLARE_GETSETOOP(Long, J), aoqi@0: DECLARE_GETSETOOP(Float, F), aoqi@0: DECLARE_GETSETOOP(Double, D), aoqi@0: aoqi@0: DECLARE_GETSETNATIVE(Byte, B), aoqi@0: DECLARE_GETSETNATIVE(Short, S), aoqi@0: DECLARE_GETSETNATIVE(Char, C), aoqi@0: DECLARE_GETSETNATIVE(Int, I), aoqi@0: DECLARE_GETSETNATIVE(Long, J), aoqi@0: DECLARE_GETSETNATIVE(Float, F), aoqi@0: DECLARE_GETSETNATIVE(Double, D), aoqi@0: aoqi@0: {CC"getAddress", CC"("ADR")"ADR, FN_PTR(Unsafe_GetNativeAddress)}, aoqi@0: {CC"putAddress", CC"("ADR""ADR")V", FN_PTR(Unsafe_SetNativeAddress)}, aoqi@0: aoqi@0: {CC"allocateMemory", CC"(J)"ADR, FN_PTR(Unsafe_AllocateMemory)}, aoqi@0: {CC"reallocateMemory", CC"("ADR"J)"ADR, FN_PTR(Unsafe_ReallocateMemory)}, aoqi@0: {CC"freeMemory", CC"("ADR")V", FN_PTR(Unsafe_FreeMemory)}, aoqi@0: aoqi@0: {CC"objectFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_ObjectFieldOffset)}, aoqi@0: {CC"staticFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_StaticFieldOffset)}, aoqi@0: {CC"staticFieldBase", CC"("FLD")"OBJ, FN_PTR(Unsafe_StaticFieldBaseFromField)}, aoqi@0: {CC"ensureClassInitialized",CC"("CLS")V", FN_PTR(Unsafe_EnsureClassInitialized)}, aoqi@0: {CC"arrayBaseOffset", CC"("CLS")I", FN_PTR(Unsafe_ArrayBaseOffset)}, aoqi@0: {CC"arrayIndexScale", CC"("CLS")I", FN_PTR(Unsafe_ArrayIndexScale)}, aoqi@0: {CC"addressSize", CC"()I", FN_PTR(Unsafe_AddressSize)}, aoqi@0: {CC"pageSize", CC"()I", FN_PTR(Unsafe_PageSize)}, aoqi@0: aoqi@0: {CC"defineClass", CC"("DC0_Args")"CLS, FN_PTR(Unsafe_DefineClass0)}, aoqi@0: {CC"defineClass", CC"("DC_Args")"CLS, FN_PTR(Unsafe_DefineClass)}, aoqi@0: {CC"allocateInstance", CC"("CLS")"OBJ, FN_PTR(Unsafe_AllocateInstance)}, aoqi@0: {CC"monitorEnter", CC"("OBJ")V", FN_PTR(Unsafe_MonitorEnter)}, aoqi@0: {CC"monitorExit", CC"("OBJ")V", FN_PTR(Unsafe_MonitorExit)}, aoqi@0: {CC"tryMonitorEnter", CC"("OBJ")Z", FN_PTR(Unsafe_TryMonitorEnter)}, aoqi@0: {CC"throwException", CC"("THR")V", FN_PTR(Unsafe_ThrowException)}, aoqi@0: {CC"compareAndSwapObject", CC"("OBJ"J"OBJ""OBJ")Z", FN_PTR(Unsafe_CompareAndSwapObject)}, aoqi@0: {CC"compareAndSwapInt", CC"("OBJ"J""I""I"")Z", FN_PTR(Unsafe_CompareAndSwapInt)}, aoqi@0: {CC"compareAndSwapLong", CC"("OBJ"J""J""J"")Z", FN_PTR(Unsafe_CompareAndSwapLong)}, aoqi@0: {CC"putOrderedObject", CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetOrderedObject)}, aoqi@0: {CC"putOrderedInt", CC"("OBJ"JI)V", FN_PTR(Unsafe_SetOrderedInt)}, aoqi@0: {CC"putOrderedLong", CC"("OBJ"JJ)V", FN_PTR(Unsafe_SetOrderedLong)}, aoqi@0: {CC"park", CC"(ZJ)V", FN_PTR(Unsafe_Park)}, aoqi@0: {CC"unpark", CC"("OBJ")V", FN_PTR(Unsafe_Unpark)} aoqi@0: }; aoqi@0: aoqi@0: // These are the methods for 1.8.0 aoqi@0: static JNINativeMethod methods_18[] = { aoqi@0: {CC"getObject", CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObject)}, aoqi@0: {CC"putObject", CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObject)}, aoqi@0: {CC"getObjectVolatile",CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObjectVolatile)}, aoqi@0: {CC"putObjectVolatile",CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObjectVolatile)}, aoqi@0: aoqi@0: DECLARE_GETSETOOP(Boolean, Z), aoqi@0: DECLARE_GETSETOOP(Byte, B), aoqi@0: DECLARE_GETSETOOP(Short, S), aoqi@0: DECLARE_GETSETOOP(Char, C), aoqi@0: DECLARE_GETSETOOP(Int, I), aoqi@0: DECLARE_GETSETOOP(Long, J), aoqi@0: DECLARE_GETSETOOP(Float, F), aoqi@0: DECLARE_GETSETOOP(Double, D), aoqi@0: aoqi@0: DECLARE_GETSETNATIVE(Byte, B), aoqi@0: DECLARE_GETSETNATIVE(Short, S), aoqi@0: DECLARE_GETSETNATIVE(Char, C), aoqi@0: DECLARE_GETSETNATIVE(Int, I), aoqi@0: DECLARE_GETSETNATIVE(Long, J), aoqi@0: DECLARE_GETSETNATIVE(Float, F), aoqi@0: DECLARE_GETSETNATIVE(Double, D), aoqi@0: aoqi@0: {CC"getAddress", CC"("ADR")"ADR, FN_PTR(Unsafe_GetNativeAddress)}, aoqi@0: {CC"putAddress", CC"("ADR""ADR")V", FN_PTR(Unsafe_SetNativeAddress)}, aoqi@0: aoqi@0: {CC"allocateMemory", CC"(J)"ADR, FN_PTR(Unsafe_AllocateMemory)}, aoqi@0: {CC"reallocateMemory", CC"("ADR"J)"ADR, FN_PTR(Unsafe_ReallocateMemory)}, aoqi@0: {CC"freeMemory", CC"("ADR")V", FN_PTR(Unsafe_FreeMemory)}, aoqi@0: aoqi@0: {CC"objectFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_ObjectFieldOffset)}, aoqi@0: {CC"staticFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_StaticFieldOffset)}, aoqi@0: {CC"staticFieldBase", CC"("FLD")"OBJ, FN_PTR(Unsafe_StaticFieldBaseFromField)}, aoqi@0: {CC"ensureClassInitialized",CC"("CLS")V", FN_PTR(Unsafe_EnsureClassInitialized)}, aoqi@0: {CC"arrayBaseOffset", CC"("CLS")I", FN_PTR(Unsafe_ArrayBaseOffset)}, aoqi@0: {CC"arrayIndexScale", CC"("CLS")I", FN_PTR(Unsafe_ArrayIndexScale)}, aoqi@0: {CC"addressSize", CC"()I", FN_PTR(Unsafe_AddressSize)}, aoqi@0: {CC"pageSize", CC"()I", FN_PTR(Unsafe_PageSize)}, aoqi@0: aoqi@0: {CC"defineClass", CC"("DC_Args")"CLS, FN_PTR(Unsafe_DefineClass)}, aoqi@0: {CC"allocateInstance", CC"("CLS")"OBJ, FN_PTR(Unsafe_AllocateInstance)}, aoqi@0: {CC"monitorEnter", CC"("OBJ")V", FN_PTR(Unsafe_MonitorEnter)}, aoqi@0: {CC"monitorExit", CC"("OBJ")V", FN_PTR(Unsafe_MonitorExit)}, aoqi@0: {CC"tryMonitorEnter", CC"("OBJ")Z", FN_PTR(Unsafe_TryMonitorEnter)}, aoqi@0: {CC"throwException", CC"("THR")V", FN_PTR(Unsafe_ThrowException)}, aoqi@0: {CC"compareAndSwapObject", CC"("OBJ"J"OBJ""OBJ")Z", FN_PTR(Unsafe_CompareAndSwapObject)}, aoqi@0: {CC"compareAndSwapInt", CC"("OBJ"J""I""I"")Z", FN_PTR(Unsafe_CompareAndSwapInt)}, aoqi@0: {CC"compareAndSwapLong", CC"("OBJ"J""J""J"")Z", FN_PTR(Unsafe_CompareAndSwapLong)}, aoqi@0: {CC"putOrderedObject", CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetOrderedObject)}, aoqi@0: {CC"putOrderedInt", CC"("OBJ"JI)V", FN_PTR(Unsafe_SetOrderedInt)}, aoqi@0: {CC"putOrderedLong", CC"("OBJ"JJ)V", FN_PTR(Unsafe_SetOrderedLong)}, aoqi@0: {CC"park", CC"(ZJ)V", FN_PTR(Unsafe_Park)}, aoqi@0: {CC"unpark", CC"("OBJ")V", FN_PTR(Unsafe_Unpark)} aoqi@0: }; aoqi@0: aoqi@0: JNINativeMethod loadavg_method[] = { aoqi@0: {CC"getLoadAverage", CC"([DI)I", FN_PTR(Unsafe_Loadavg)} aoqi@0: }; aoqi@0: aoqi@0: JNINativeMethod prefetch_methods[] = { aoqi@0: {CC"prefetchRead", CC"("OBJ"J)V", FN_PTR(Unsafe_PrefetchRead)}, aoqi@0: {CC"prefetchWrite", CC"("OBJ"J)V", FN_PTR(Unsafe_PrefetchWrite)}, aoqi@0: {CC"prefetchReadStatic", CC"("OBJ"J)V", FN_PTR(Unsafe_PrefetchRead)}, aoqi@0: {CC"prefetchWriteStatic",CC"("OBJ"J)V", FN_PTR(Unsafe_PrefetchWrite)} aoqi@0: }; aoqi@0: aoqi@0: JNINativeMethod memcopy_methods_17[] = { aoqi@0: {CC"copyMemory", CC"("OBJ"J"OBJ"JJ)V", FN_PTR(Unsafe_CopyMemory2)}, aoqi@0: {CC"setMemory", CC"("OBJ"JJB)V", FN_PTR(Unsafe_SetMemory2)} aoqi@0: }; aoqi@0: aoqi@0: JNINativeMethod memcopy_methods_15[] = { aoqi@0: {CC"setMemory", CC"("ADR"JB)V", FN_PTR(Unsafe_SetMemory)}, aoqi@0: {CC"copyMemory", CC"("ADR ADR"J)V", FN_PTR(Unsafe_CopyMemory)} aoqi@0: }; aoqi@0: aoqi@0: JNINativeMethod anonk_methods[] = { aoqi@0: {CC"defineAnonymousClass", CC"("DAC_Args")"CLS, FN_PTR(Unsafe_DefineAnonymousClass)}, aoqi@0: }; aoqi@0: aoqi@0: JNINativeMethod lform_methods[] = { aoqi@0: {CC"shouldBeInitialized",CC"("CLS")Z", FN_PTR(Unsafe_ShouldBeInitialized)}, aoqi@0: }; aoqi@0: aoqi@0: JNINativeMethod fence_methods[] = { aoqi@0: {CC"loadFence", CC"()V", FN_PTR(Unsafe_LoadFence)}, aoqi@0: {CC"storeFence", CC"()V", FN_PTR(Unsafe_StoreFence)}, aoqi@0: {CC"fullFence", CC"()V", FN_PTR(Unsafe_FullFence)}, aoqi@0: }; aoqi@0: aoqi@0: #undef CC aoqi@0: #undef FN_PTR aoqi@0: aoqi@0: #undef ADR aoqi@0: #undef LANG aoqi@0: #undef OBJ aoqi@0: #undef CLS aoqi@0: #undef CTR aoqi@0: #undef FLD aoqi@0: #undef MTH aoqi@0: #undef THR aoqi@0: #undef DC0_Args aoqi@0: #undef DC_Args aoqi@0: aoqi@0: #undef DECLARE_GETSETOOP aoqi@0: #undef DECLARE_GETSETNATIVE aoqi@0: aoqi@0: aoqi@0: /** aoqi@0: * Helper method to register native methods. aoqi@0: */ aoqi@0: static bool register_natives(const char* message, JNIEnv* env, jclass clazz, const JNINativeMethod* methods, jint nMethods) { aoqi@0: int status = env->RegisterNatives(clazz, methods, nMethods); aoqi@0: if (status < 0 || env->ExceptionOccurred()) { aoqi@0: if (PrintMiscellaneous && (Verbose || WizardMode)) { aoqi@0: tty->print_cr("Unsafe: failed registering %s", message); aoqi@0: } aoqi@0: env->ExceptionClear(); aoqi@0: return false; aoqi@0: } else { aoqi@0: if (PrintMiscellaneous && (Verbose || WizardMode)) { aoqi@0: tty->print_cr("Unsafe: successfully registered %s", message); aoqi@0: } aoqi@0: return true; aoqi@0: } aoqi@0: } aoqi@0: aoqi@0: aoqi@0: // This one function is exported, used by NativeLookup. aoqi@0: // The Unsafe_xxx functions above are called only from the interpreter. aoqi@0: // The optimizer looks at names and signatures to recognize aoqi@0: // individual functions. aoqi@0: aoqi@0: JVM_ENTRY(void, JVM_RegisterUnsafeMethods(JNIEnv *env, jclass unsafecls)) aoqi@0: UnsafeWrapper("JVM_RegisterUnsafeMethods"); aoqi@0: { aoqi@0: ThreadToNativeFromVM ttnfv(thread); aoqi@0: aoqi@0: // Unsafe methods aoqi@0: { aoqi@0: bool success = false; aoqi@0: // We need to register the 1.6 methods first because the 1.8 methods would register fine on 1.7 and 1.6 aoqi@0: if (!success) { aoqi@0: success = register_natives("1.6 methods", env, unsafecls, methods_16, sizeof(methods_16)/sizeof(JNINativeMethod)); aoqi@0: } aoqi@0: if (!success) { aoqi@0: success = register_natives("1.8 methods", env, unsafecls, methods_18, sizeof(methods_18)/sizeof(JNINativeMethod)); aoqi@0: } aoqi@0: if (!success) { aoqi@0: success = register_natives("1.5 methods", env, unsafecls, methods_15, sizeof(methods_15)/sizeof(JNINativeMethod)); aoqi@0: } aoqi@0: if (!success) { aoqi@0: success = register_natives("1.4.1 methods", env, unsafecls, methods_141, sizeof(methods_141)/sizeof(JNINativeMethod)); aoqi@0: } aoqi@0: if (!success) { aoqi@0: success = register_natives("1.4.0 methods", env, unsafecls, methods_140, sizeof(methods_140)/sizeof(JNINativeMethod)); aoqi@0: } aoqi@0: guarantee(success, "register unsafe natives"); aoqi@0: } aoqi@0: aoqi@0: // Unsafe.getLoadAverage aoqi@0: register_natives("1.6 loadavg method", env, unsafecls, loadavg_method, sizeof(loadavg_method)/sizeof(JNINativeMethod)); aoqi@0: aoqi@0: // Prefetch methods aoqi@0: register_natives("1.6 prefetch methods", env, unsafecls, prefetch_methods, sizeof(prefetch_methods)/sizeof(JNINativeMethod)); aoqi@0: aoqi@0: // Memory copy methods aoqi@0: { aoqi@0: bool success = false; aoqi@0: if (!success) { aoqi@0: success = register_natives("1.7 memory copy methods", env, unsafecls, memcopy_methods_17, sizeof(memcopy_methods_17)/sizeof(JNINativeMethod)); aoqi@0: } aoqi@0: if (!success) { aoqi@0: success = register_natives("1.5 memory copy methods", env, unsafecls, memcopy_methods_15, sizeof(memcopy_methods_15)/sizeof(JNINativeMethod)); aoqi@0: } aoqi@0: } aoqi@0: aoqi@0: // Unsafe.defineAnonymousClass aoqi@0: if (EnableInvokeDynamic) { aoqi@0: register_natives("1.7 define anonymous class method", env, unsafecls, anonk_methods, sizeof(anonk_methods)/sizeof(JNINativeMethod)); aoqi@0: } aoqi@0: aoqi@0: // Unsafe.shouldBeInitialized aoqi@0: if (EnableInvokeDynamic) { aoqi@0: register_natives("1.7 LambdaForm support", env, unsafecls, lform_methods, sizeof(lform_methods)/sizeof(JNINativeMethod)); aoqi@0: } aoqi@0: aoqi@0: // Fence methods aoqi@0: register_natives("1.8 fence methods", env, unsafecls, fence_methods, sizeof(fence_methods)/sizeof(JNINativeMethod)); aoqi@0: } aoqi@0: JVM_END