duke@435: /* xdono@631: * Copyright 2000-2008 Sun Microsystems, Inc. All Rights Reserved. duke@435: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. duke@435: * duke@435: * This code is free software; you can redistribute it and/or modify it duke@435: * under the terms of the GNU General Public License version 2 only, as duke@435: * published by the Free Software Foundation. duke@435: * duke@435: * This code is distributed in the hope that it will be useful, but WITHOUT duke@435: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or duke@435: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License duke@435: * version 2 for more details (a copy is included in the LICENSE file that duke@435: * accompanied this code). duke@435: * duke@435: * You should have received a copy of the GNU General Public License version duke@435: * 2 along with this work; if not, write to the Free Software Foundation, duke@435: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. duke@435: * duke@435: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, duke@435: * CA 95054 USA or visit www.sun.com if you need additional information or duke@435: * have any questions. duke@435: * duke@435: */ duke@435: duke@435: /* duke@435: * Implementation of class sun.misc.Unsafe duke@435: */ duke@435: duke@435: #include "incls/_precompiled.incl" duke@435: #include "incls/_unsafe.cpp.incl" duke@435: duke@435: #define MAX_OBJECT_SIZE \ duke@435: ( arrayOopDesc::header_size(T_DOUBLE) * HeapWordSize \ duke@435: + ((julong)max_jint * sizeof(double)) ) duke@435: duke@435: duke@435: #define UNSAFE_ENTRY(result_type, header) \ duke@435: JVM_ENTRY(result_type, header) duke@435: duke@435: // Can't use UNSAFE_LEAF because it has the signature of a straight duke@435: // call into the runtime (just like JVM_LEAF, funny that) but it's duke@435: // called like a Java Native and thus the wrapper built for it passes duke@435: // arguments like a JNI call. It expects those arguments to be popped duke@435: // from the stack on Intel like all good JNI args are, and adjusts the duke@435: // stack according. Since the JVM_LEAF call expects no extra duke@435: // arguments the stack isn't popped in the C code, is pushed by the duke@435: // wrapper and we get sick. duke@435: //#define UNSAFE_LEAF(result_type, header) \ duke@435: // JVM_LEAF(result_type, header) duke@435: duke@435: #define UNSAFE_END JVM_END duke@435: duke@435: #define UnsafeWrapper(arg) /*nothing, for the present*/ duke@435: duke@435: duke@435: inline void* addr_from_java(jlong addr) { duke@435: // This assert fails in a variety of ways on 32-bit systems. duke@435: // It is impossible to predict whether native code that converts duke@435: // pointers to longs will sign-extend or zero-extend the addresses. duke@435: //assert(addr == (uintptr_t)addr, "must not be odd high bits"); duke@435: return (void*)(uintptr_t)addr; duke@435: } duke@435: duke@435: inline jlong addr_to_java(void* p) { duke@435: assert(p == (void*)(uintptr_t)p, "must not be odd high bits"); duke@435: return (uintptr_t)p; duke@435: } duke@435: duke@435: duke@435: // Note: The VM's obj_field and related accessors use byte-scaled duke@435: // ("unscaled") offsets, just as the unsafe methods do. duke@435: duke@435: // However, the method Unsafe.fieldOffset explicitly declines to duke@435: // guarantee this. The field offset values manipulated by the Java user duke@435: // through the Unsafe API are opaque cookies that just happen to be byte duke@435: // offsets. We represent this state of affairs by passing the cookies duke@435: // through conversion functions when going between the VM and the Unsafe API. duke@435: // The conversion functions just happen to be no-ops at present. duke@435: duke@435: inline jlong field_offset_to_byte_offset(jlong field_offset) { duke@435: return field_offset; duke@435: } duke@435: duke@435: inline jlong field_offset_from_byte_offset(jlong byte_offset) { duke@435: return byte_offset; duke@435: } duke@435: duke@435: inline jint invocation_key_from_method_slot(jint slot) { duke@435: return slot; duke@435: } duke@435: duke@435: inline jint invocation_key_to_method_slot(jint key) { duke@435: return key; duke@435: } duke@435: duke@435: inline void* index_oop_from_field_offset_long(oop p, jlong field_offset) { duke@435: jlong byte_offset = field_offset_to_byte_offset(field_offset); duke@435: #ifdef ASSERT duke@435: if (p != NULL) { duke@435: assert(byte_offset >= 0 && byte_offset <= (jlong)MAX_OBJECT_SIZE, "sane offset"); duke@435: if (byte_offset == (jint)byte_offset) { duke@435: void* ptr_plus_disp = (address)p + byte_offset; coleenp@548: assert((void*)p->obj_field_addr((jint)byte_offset) == ptr_plus_disp, duke@435: "raw [ptr+disp] must be consistent with oop::field_base"); duke@435: } duke@435: } duke@435: #endif duke@435: if (sizeof(char*) == sizeof(jint)) // (this constant folds!) duke@435: return (address)p + (jint) byte_offset; duke@435: else duke@435: return (address)p + byte_offset; duke@435: } duke@435: duke@435: // Externally callable versions: duke@435: // (Use these in compiler intrinsics which emulate unsafe primitives.) duke@435: jlong Unsafe_field_offset_to_byte_offset(jlong field_offset) { duke@435: return field_offset; duke@435: } duke@435: jlong Unsafe_field_offset_from_byte_offset(jlong byte_offset) { duke@435: return byte_offset; duke@435: } duke@435: jint Unsafe_invocation_key_from_method_slot(jint slot) { duke@435: return invocation_key_from_method_slot(slot); duke@435: } duke@435: jint Unsafe_invocation_key_to_method_slot(jint key) { duke@435: return invocation_key_to_method_slot(key); duke@435: } duke@435: duke@435: duke@435: ///// Data in the Java heap. duke@435: duke@435: #define GET_FIELD(obj, offset, type_name, v) \ duke@435: oop p = JNIHandles::resolve(obj); \ duke@435: type_name v = *(type_name*)index_oop_from_field_offset_long(p, offset) duke@435: duke@435: #define SET_FIELD(obj, offset, type_name, x) \ duke@435: oop p = JNIHandles::resolve(obj); \ duke@435: *(type_name*)index_oop_from_field_offset_long(p, offset) = x duke@435: duke@435: #define GET_FIELD_VOLATILE(obj, offset, type_name, v) \ duke@435: oop p = JNIHandles::resolve(obj); \ duke@435: volatile type_name v = *(volatile type_name*)index_oop_from_field_offset_long(p, offset) duke@435: duke@435: #define SET_FIELD_VOLATILE(obj, offset, type_name, x) \ duke@435: oop p = JNIHandles::resolve(obj); \ duke@435: *(volatile type_name*)index_oop_from_field_offset_long(p, offset) = x; \ duke@435: OrderAccess::fence(); duke@435: coleenp@548: // Macros for oops that check UseCompressedOops coleenp@548: coleenp@548: #define GET_OOP_FIELD(obj, offset, v) \ coleenp@548: oop p = JNIHandles::resolve(obj); \ coleenp@548: oop v; \ coleenp@548: if (UseCompressedOops) { \ coleenp@548: narrowOop n = *(narrowOop*)index_oop_from_field_offset_long(p, offset); \ coleenp@548: v = oopDesc::decode_heap_oop(n); \ coleenp@548: } else { \ coleenp@548: v = *(oop*)index_oop_from_field_offset_long(p, offset); \ coleenp@548: } coleenp@548: coleenp@548: #define GET_OOP_FIELD_VOLATILE(obj, offset, v) \ coleenp@548: oop p = JNIHandles::resolve(obj); \ coleenp@548: volatile oop v; \ coleenp@548: if (UseCompressedOops) { \ coleenp@548: volatile narrowOop n = *(volatile narrowOop*)index_oop_from_field_offset_long(p, offset); \ coleenp@548: v = oopDesc::decode_heap_oop(n); \ coleenp@548: } else { \ coleenp@548: v = *(volatile oop*)index_oop_from_field_offset_long(p, offset); \ coleenp@548: } coleenp@548: coleenp@548: duke@435: // Get/SetObject must be special-cased, since it works with handles. duke@435: duke@435: // The xxx140 variants for backward compatibility do not allow a full-width offset. duke@435: UNSAFE_ENTRY(jobject, Unsafe_GetObject140(JNIEnv *env, jobject unsafe, jobject obj, jint offset)) duke@435: UnsafeWrapper("Unsafe_GetObject"); duke@435: if (obj == NULL) THROW_0(vmSymbols::java_lang_NullPointerException()); coleenp@548: GET_OOP_FIELD(obj, offset, v) duke@435: return JNIHandles::make_local(env, v); duke@435: UNSAFE_END duke@435: duke@435: UNSAFE_ENTRY(void, Unsafe_SetObject140(JNIEnv *env, jobject unsafe, jobject obj, jint offset, jobject x_h)) duke@435: UnsafeWrapper("Unsafe_SetObject"); duke@435: if (obj == NULL) THROW(vmSymbols::java_lang_NullPointerException()); duke@435: oop x = JNIHandles::resolve(x_h); duke@435: //SET_FIELD(obj, offset, oop, x); duke@435: oop p = JNIHandles::resolve(obj); coleenp@548: if (UseCompressedOops) { coleenp@548: if (x != NULL) { coleenp@548: // If there is a heap base pointer, we are obliged to emit a store barrier. coleenp@548: oop_store((narrowOop*)index_oop_from_field_offset_long(p, offset), x); coleenp@548: } else { coleenp@548: narrowOop n = oopDesc::encode_heap_oop_not_null(x); coleenp@548: *(narrowOop*)index_oop_from_field_offset_long(p, offset) = n; coleenp@548: } duke@435: } else { coleenp@548: if (x != NULL) { coleenp@548: // If there is a heap base pointer, we are obliged to emit a store barrier. coleenp@548: oop_store((oop*)index_oop_from_field_offset_long(p, offset), x); coleenp@548: } else { coleenp@548: *(oop*)index_oop_from_field_offset_long(p, offset) = x; coleenp@548: } duke@435: } duke@435: UNSAFE_END duke@435: duke@435: // The normal variants allow a null base pointer with an arbitrary address. duke@435: // But if the base pointer is non-null, the offset should make some sense. duke@435: // That is, it should be in the range [0, MAX_OBJECT_SIZE]. duke@435: UNSAFE_ENTRY(jobject, Unsafe_GetObject(JNIEnv *env, jobject unsafe, jobject obj, jlong offset)) duke@435: UnsafeWrapper("Unsafe_GetObject"); coleenp@548: GET_OOP_FIELD(obj, offset, v) duke@435: return JNIHandles::make_local(env, v); duke@435: UNSAFE_END duke@435: duke@435: UNSAFE_ENTRY(void, Unsafe_SetObject(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jobject x_h)) duke@435: UnsafeWrapper("Unsafe_SetObject"); duke@435: oop x = JNIHandles::resolve(x_h); duke@435: oop p = JNIHandles::resolve(obj); coleenp@548: if (UseCompressedOops) { coleenp@548: oop_store((narrowOop*)index_oop_from_field_offset_long(p, offset), x); coleenp@548: } else { coleenp@548: oop_store((oop*)index_oop_from_field_offset_long(p, offset), x); coleenp@548: } duke@435: UNSAFE_END duke@435: duke@435: UNSAFE_ENTRY(jobject, Unsafe_GetObjectVolatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset)) duke@435: UnsafeWrapper("Unsafe_GetObjectVolatile"); coleenp@548: GET_OOP_FIELD_VOLATILE(obj, offset, v) duke@435: return JNIHandles::make_local(env, v); duke@435: UNSAFE_END duke@435: duke@435: UNSAFE_ENTRY(void, Unsafe_SetObjectVolatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jobject x_h)) duke@435: UnsafeWrapper("Unsafe_SetObjectVolatile"); duke@435: oop x = JNIHandles::resolve(x_h); duke@435: oop p = JNIHandles::resolve(obj); coleenp@548: if (UseCompressedOops) { coleenp@548: oop_store((narrowOop*)index_oop_from_field_offset_long(p, offset), x); coleenp@548: } else { coleenp@548: oop_store((oop*)index_oop_from_field_offset_long(p, offset), x); coleenp@548: } duke@435: OrderAccess::fence(); duke@435: UNSAFE_END duke@435: duke@435: // Volatile long versions must use locks if !VM_Version::supports_cx8(). duke@435: // support_cx8 is a surrogate for 'supports atomic long memory ops'. duke@435: duke@435: UNSAFE_ENTRY(jlong, Unsafe_GetLongVolatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset)) duke@435: UnsafeWrapper("Unsafe_GetLongVolatile"); duke@435: { duke@435: if (VM_Version::supports_cx8()) { duke@435: GET_FIELD_VOLATILE(obj, offset, jlong, v); duke@435: return v; duke@435: } duke@435: else { duke@435: Handle p (THREAD, JNIHandles::resolve(obj)); duke@435: jlong* addr = (jlong*)(index_oop_from_field_offset_long(p(), offset)); duke@435: ObjectLocker ol(p, THREAD); duke@435: jlong value = *addr; duke@435: return value; duke@435: } duke@435: } duke@435: UNSAFE_END duke@435: duke@435: UNSAFE_ENTRY(void, Unsafe_SetLongVolatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jlong x)) duke@435: UnsafeWrapper("Unsafe_SetLongVolatile"); duke@435: { duke@435: if (VM_Version::supports_cx8()) { duke@435: SET_FIELD_VOLATILE(obj, offset, jlong, x); duke@435: } duke@435: else { duke@435: Handle p (THREAD, JNIHandles::resolve(obj)); duke@435: jlong* addr = (jlong*)(index_oop_from_field_offset_long(p(), offset)); duke@435: ObjectLocker ol(p, THREAD); duke@435: *addr = x; duke@435: } duke@435: } duke@435: UNSAFE_END duke@435: duke@435: duke@435: #define DEFINE_GETSETOOP(jboolean, Boolean) \ duke@435: \ duke@435: UNSAFE_ENTRY(jboolean, Unsafe_Get##Boolean##140(JNIEnv *env, jobject unsafe, jobject obj, jint offset)) \ duke@435: UnsafeWrapper("Unsafe_Get"#Boolean); \ duke@435: if (obj == NULL) THROW_0(vmSymbols::java_lang_NullPointerException()); \ duke@435: GET_FIELD(obj, offset, jboolean, v); \ duke@435: return v; \ duke@435: UNSAFE_END \ duke@435: \ duke@435: UNSAFE_ENTRY(void, Unsafe_Set##Boolean##140(JNIEnv *env, jobject unsafe, jobject obj, jint offset, jboolean x)) \ duke@435: UnsafeWrapper("Unsafe_Set"#Boolean); \ duke@435: if (obj == NULL) THROW(vmSymbols::java_lang_NullPointerException()); \ duke@435: SET_FIELD(obj, offset, jboolean, x); \ duke@435: UNSAFE_END \ duke@435: \ duke@435: UNSAFE_ENTRY(jboolean, Unsafe_Get##Boolean(JNIEnv *env, jobject unsafe, jobject obj, jlong offset)) \ duke@435: UnsafeWrapper("Unsafe_Get"#Boolean); \ duke@435: GET_FIELD(obj, offset, jboolean, v); \ duke@435: return v; \ duke@435: UNSAFE_END \ duke@435: \ duke@435: UNSAFE_ENTRY(void, Unsafe_Set##Boolean(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jboolean x)) \ duke@435: UnsafeWrapper("Unsafe_Set"#Boolean); \ duke@435: SET_FIELD(obj, offset, jboolean, x); \ duke@435: UNSAFE_END \ duke@435: \ duke@435: // END DEFINE_GETSETOOP. duke@435: duke@435: duke@435: #define DEFINE_GETSETOOP_VOLATILE(jboolean, Boolean) \ duke@435: \ duke@435: UNSAFE_ENTRY(jboolean, Unsafe_Get##Boolean##Volatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset)) \ duke@435: UnsafeWrapper("Unsafe_Get"#Boolean); \ duke@435: GET_FIELD_VOLATILE(obj, offset, jboolean, v); \ duke@435: return v; \ duke@435: UNSAFE_END \ duke@435: \ duke@435: UNSAFE_ENTRY(void, Unsafe_Set##Boolean##Volatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jboolean x)) \ duke@435: UnsafeWrapper("Unsafe_Set"#Boolean); \ duke@435: SET_FIELD_VOLATILE(obj, offset, jboolean, x); \ duke@435: UNSAFE_END \ duke@435: \ duke@435: // END DEFINE_GETSETOOP_VOLATILE. duke@435: duke@435: DEFINE_GETSETOOP(jboolean, Boolean) duke@435: DEFINE_GETSETOOP(jbyte, Byte) duke@435: DEFINE_GETSETOOP(jshort, Short); duke@435: DEFINE_GETSETOOP(jchar, Char); duke@435: DEFINE_GETSETOOP(jint, Int); duke@435: DEFINE_GETSETOOP(jlong, Long); duke@435: DEFINE_GETSETOOP(jfloat, Float); duke@435: DEFINE_GETSETOOP(jdouble, Double); duke@435: duke@435: DEFINE_GETSETOOP_VOLATILE(jboolean, Boolean) duke@435: DEFINE_GETSETOOP_VOLATILE(jbyte, Byte) duke@435: DEFINE_GETSETOOP_VOLATILE(jshort, Short); duke@435: DEFINE_GETSETOOP_VOLATILE(jchar, Char); duke@435: DEFINE_GETSETOOP_VOLATILE(jint, Int); duke@435: // no long -- handled specially duke@435: DEFINE_GETSETOOP_VOLATILE(jfloat, Float); duke@435: DEFINE_GETSETOOP_VOLATILE(jdouble, Double); duke@435: duke@435: #undef DEFINE_GETSETOOP duke@435: duke@435: // The non-intrinsified versions of setOrdered just use setVolatile duke@435: duke@435: UNSAFE_ENTRY(void, Unsafe_SetOrderedInt(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jint x)) \ duke@435: UnsafeWrapper("Unsafe_SetOrderedInt"); \ duke@435: SET_FIELD_VOLATILE(obj, offset, jint, x); \ duke@435: UNSAFE_END duke@435: duke@435: UNSAFE_ENTRY(void, Unsafe_SetOrderedObject(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jobject x_h)) duke@435: UnsafeWrapper("Unsafe_SetOrderedObject"); duke@435: oop x = JNIHandles::resolve(x_h); duke@435: oop p = JNIHandles::resolve(obj); coleenp@548: if (UseCompressedOops) { coleenp@548: oop_store((narrowOop*)index_oop_from_field_offset_long(p, offset), x); coleenp@548: } else { coleenp@548: oop_store((oop*)index_oop_from_field_offset_long(p, offset), x); coleenp@548: } duke@435: OrderAccess::fence(); duke@435: UNSAFE_END duke@435: duke@435: UNSAFE_ENTRY(void, Unsafe_SetOrderedLong(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jlong x)) duke@435: UnsafeWrapper("Unsafe_SetOrderedLong"); duke@435: { duke@435: if (VM_Version::supports_cx8()) { duke@435: SET_FIELD_VOLATILE(obj, offset, jlong, x); duke@435: } duke@435: else { duke@435: Handle p (THREAD, JNIHandles::resolve(obj)); duke@435: jlong* addr = (jlong*)(index_oop_from_field_offset_long(p(), offset)); duke@435: ObjectLocker ol(p, THREAD); duke@435: *addr = x; duke@435: } duke@435: } duke@435: UNSAFE_END duke@435: duke@435: ////// Data in the C heap. duke@435: duke@435: // Note: These do not throw NullPointerException for bad pointers. duke@435: // They just crash. Only a oop base pointer can generate a NullPointerException. duke@435: // duke@435: #define DEFINE_GETSETNATIVE(java_type, Type, native_type) \ duke@435: \ duke@435: UNSAFE_ENTRY(java_type, Unsafe_GetNative##Type(JNIEnv *env, jobject unsafe, jlong addr)) \ duke@435: UnsafeWrapper("Unsafe_GetNative"#Type); \ duke@435: void* p = addr_from_java(addr); \ duke@435: JavaThread* t = JavaThread::current(); \ duke@435: t->set_doing_unsafe_access(true); \ duke@435: java_type x = *(volatile native_type*)p; \ duke@435: t->set_doing_unsafe_access(false); \ duke@435: return x; \ duke@435: UNSAFE_END \ duke@435: \ duke@435: UNSAFE_ENTRY(void, Unsafe_SetNative##Type(JNIEnv *env, jobject unsafe, jlong addr, java_type x)) \ duke@435: UnsafeWrapper("Unsafe_SetNative"#Type); \ duke@435: JavaThread* t = JavaThread::current(); \ duke@435: t->set_doing_unsafe_access(true); \ duke@435: void* p = addr_from_java(addr); \ duke@435: *(volatile native_type*)p = x; \ duke@435: t->set_doing_unsafe_access(false); \ duke@435: UNSAFE_END \ duke@435: \ duke@435: // END DEFINE_GETSETNATIVE. duke@435: duke@435: DEFINE_GETSETNATIVE(jbyte, Byte, signed char) duke@435: DEFINE_GETSETNATIVE(jshort, Short, signed short); duke@435: DEFINE_GETSETNATIVE(jchar, Char, unsigned short); duke@435: DEFINE_GETSETNATIVE(jint, Int, jint); duke@435: // no long -- handled specially duke@435: DEFINE_GETSETNATIVE(jfloat, Float, float); duke@435: DEFINE_GETSETNATIVE(jdouble, Double, double); duke@435: duke@435: #undef DEFINE_GETSETNATIVE duke@435: duke@435: UNSAFE_ENTRY(jlong, Unsafe_GetNativeLong(JNIEnv *env, jobject unsafe, jlong addr)) duke@435: UnsafeWrapper("Unsafe_GetNativeLong"); duke@435: JavaThread* t = JavaThread::current(); duke@435: // We do it this way to avoid problems with access to heap using 64 duke@435: // bit loads, as jlong in heap could be not 64-bit aligned, and on duke@435: // some CPUs (SPARC) it leads to SIGBUS. duke@435: t->set_doing_unsafe_access(true); duke@435: void* p = addr_from_java(addr); duke@435: jlong x; duke@435: if (((intptr_t)p & 7) == 0) { duke@435: // jlong is aligned, do a volatile access duke@435: x = *(volatile jlong*)p; duke@435: } else { duke@435: jlong_accessor acc; duke@435: acc.words[0] = ((volatile jint*)p)[0]; duke@435: acc.words[1] = ((volatile jint*)p)[1]; duke@435: x = acc.long_value; duke@435: } duke@435: t->set_doing_unsafe_access(false); duke@435: return x; duke@435: UNSAFE_END duke@435: duke@435: UNSAFE_ENTRY(void, Unsafe_SetNativeLong(JNIEnv *env, jobject unsafe, jlong addr, jlong x)) duke@435: UnsafeWrapper("Unsafe_SetNativeLong"); duke@435: JavaThread* t = JavaThread::current(); duke@435: // see comment for Unsafe_GetNativeLong duke@435: t->set_doing_unsafe_access(true); duke@435: void* p = addr_from_java(addr); duke@435: if (((intptr_t)p & 7) == 0) { duke@435: // jlong is aligned, do a volatile access duke@435: *(volatile jlong*)p = x; duke@435: } else { duke@435: jlong_accessor acc; duke@435: acc.long_value = x; duke@435: ((volatile jint*)p)[0] = acc.words[0]; duke@435: ((volatile jint*)p)[1] = acc.words[1]; duke@435: } duke@435: t->set_doing_unsafe_access(false); duke@435: UNSAFE_END duke@435: duke@435: duke@435: UNSAFE_ENTRY(jlong, Unsafe_GetNativeAddress(JNIEnv *env, jobject unsafe, jlong addr)) duke@435: UnsafeWrapper("Unsafe_GetNativeAddress"); duke@435: void* p = addr_from_java(addr); duke@435: return addr_to_java(*(void**)p); duke@435: UNSAFE_END duke@435: duke@435: UNSAFE_ENTRY(void, Unsafe_SetNativeAddress(JNIEnv *env, jobject unsafe, jlong addr, jlong x)) duke@435: UnsafeWrapper("Unsafe_SetNativeAddress"); duke@435: void* p = addr_from_java(addr); duke@435: *(void**)p = addr_from_java(x); duke@435: UNSAFE_END duke@435: duke@435: duke@435: ////// Allocation requests duke@435: duke@435: UNSAFE_ENTRY(jobject, Unsafe_AllocateInstance(JNIEnv *env, jobject unsafe, jclass cls)) duke@435: UnsafeWrapper("Unsafe_AllocateInstance"); duke@435: { duke@435: ThreadToNativeFromVM ttnfv(thread); duke@435: return env->AllocObject(cls); duke@435: } duke@435: UNSAFE_END duke@435: duke@435: UNSAFE_ENTRY(jlong, Unsafe_AllocateMemory(JNIEnv *env, jobject unsafe, jlong size)) duke@435: UnsafeWrapper("Unsafe_AllocateMemory"); duke@435: size_t sz = (size_t)size; duke@435: if (sz != (julong)size || size < 0) { duke@435: THROW_0(vmSymbols::java_lang_IllegalArgumentException()); duke@435: } duke@435: if (sz == 0) { duke@435: return 0; duke@435: } duke@435: sz = round_to(sz, HeapWordSize); duke@435: void* x = os::malloc(sz); duke@435: if (x == NULL) { duke@435: THROW_0(vmSymbols::java_lang_OutOfMemoryError()); duke@435: } duke@435: //Copy::fill_to_words((HeapWord*)x, sz / HeapWordSize); duke@435: return addr_to_java(x); duke@435: UNSAFE_END duke@435: duke@435: UNSAFE_ENTRY(jlong, Unsafe_ReallocateMemory(JNIEnv *env, jobject unsafe, jlong addr, jlong size)) duke@435: UnsafeWrapper("Unsafe_ReallocateMemory"); duke@435: void* p = addr_from_java(addr); duke@435: size_t sz = (size_t)size; duke@435: if (sz != (julong)size || size < 0) { duke@435: THROW_0(vmSymbols::java_lang_IllegalArgumentException()); duke@435: } duke@435: if (sz == 0) { duke@435: os::free(p); duke@435: return 0; duke@435: } duke@435: sz = round_to(sz, HeapWordSize); duke@435: void* x = (p == NULL) ? os::malloc(sz) : os::realloc(p, sz); duke@435: if (x == NULL) { duke@435: THROW_0(vmSymbols::java_lang_OutOfMemoryError()); duke@435: } duke@435: return addr_to_java(x); duke@435: UNSAFE_END duke@435: duke@435: UNSAFE_ENTRY(void, Unsafe_FreeMemory(JNIEnv *env, jobject unsafe, jlong addr)) duke@435: UnsafeWrapper("Unsafe_FreeMemory"); duke@435: void* p = addr_from_java(addr); duke@435: if (p == NULL) { duke@435: return; duke@435: } duke@435: os::free(p); duke@435: UNSAFE_END duke@435: duke@435: UNSAFE_ENTRY(void, Unsafe_SetMemory(JNIEnv *env, jobject unsafe, jlong addr, jlong size, jbyte value)) duke@435: UnsafeWrapper("Unsafe_SetMemory"); duke@435: size_t sz = (size_t)size; duke@435: if (sz != (julong)size || size < 0) { duke@435: THROW(vmSymbols::java_lang_IllegalArgumentException()); duke@435: } duke@435: char* p = (char*) addr_from_java(addr); duke@435: Copy::fill_to_memory_atomic(p, sz, value); duke@435: UNSAFE_END duke@435: duke@435: UNSAFE_ENTRY(void, Unsafe_SetMemory2(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jlong size, jbyte value)) duke@435: UnsafeWrapper("Unsafe_SetMemory"); duke@435: size_t sz = (size_t)size; duke@435: if (sz != (julong)size || size < 0) { duke@435: THROW(vmSymbols::java_lang_IllegalArgumentException()); duke@435: } duke@435: oop base = JNIHandles::resolve(obj); duke@435: void* p = index_oop_from_field_offset_long(base, offset); duke@435: Copy::fill_to_memory_atomic(p, sz, value); duke@435: UNSAFE_END duke@435: duke@435: UNSAFE_ENTRY(void, Unsafe_CopyMemory(JNIEnv *env, jobject unsafe, jlong srcAddr, jlong dstAddr, jlong size)) duke@435: UnsafeWrapper("Unsafe_CopyMemory"); duke@435: if (size == 0) { duke@435: return; duke@435: } duke@435: size_t sz = (size_t)size; duke@435: if (sz != (julong)size || size < 0) { duke@435: THROW(vmSymbols::java_lang_IllegalArgumentException()); duke@435: } duke@435: void* src = addr_from_java(srcAddr); duke@435: void* dst = addr_from_java(dstAddr); duke@435: Copy::conjoint_memory_atomic(src, dst, sz); duke@435: UNSAFE_END duke@435: duke@435: UNSAFE_ENTRY(void, Unsafe_CopyMemory2(JNIEnv *env, jobject unsafe, jobject srcObj, jlong srcOffset, jobject dstObj, jlong dstOffset, jlong size)) duke@435: UnsafeWrapper("Unsafe_CopyMemory"); duke@435: if (size == 0) { duke@435: return; duke@435: } duke@435: size_t sz = (size_t)size; duke@435: if (sz != (julong)size || size < 0) { duke@435: THROW(vmSymbols::java_lang_IllegalArgumentException()); duke@435: } duke@435: oop srcp = JNIHandles::resolve(srcObj); duke@435: oop dstp = JNIHandles::resolve(dstObj); duke@435: if (dstp != NULL && !dstp->is_typeArray()) { duke@435: // NYI: This works only for non-oop arrays at present. duke@435: // Generalizing it would be reasonable, but requires card marking. duke@435: // Also, autoboxing a Long from 0L in copyMemory(x,y, 0L,z, n) would be bad. duke@435: THROW(vmSymbols::java_lang_IllegalArgumentException()); duke@435: } duke@435: void* src = index_oop_from_field_offset_long(srcp, srcOffset); duke@435: void* dst = index_oop_from_field_offset_long(dstp, dstOffset); duke@435: Copy::conjoint_memory_atomic(src, dst, sz); duke@435: UNSAFE_END duke@435: duke@435: duke@435: ////// Random queries duke@435: duke@435: // See comment at file start about UNSAFE_LEAF duke@435: //UNSAFE_LEAF(jint, Unsafe_AddressSize()) duke@435: UNSAFE_ENTRY(jint, Unsafe_AddressSize(JNIEnv *env, jobject unsafe)) duke@435: UnsafeWrapper("Unsafe_AddressSize"); duke@435: return sizeof(void*); duke@435: UNSAFE_END duke@435: duke@435: // See comment at file start about UNSAFE_LEAF duke@435: //UNSAFE_LEAF(jint, Unsafe_PageSize()) duke@435: UNSAFE_ENTRY(jint, Unsafe_PageSize(JNIEnv *env, jobject unsafe)) duke@435: UnsafeWrapper("Unsafe_PageSize"); duke@435: return os::vm_page_size(); duke@435: UNSAFE_END duke@435: duke@435: jint find_field_offset(jobject field, int must_be_static, TRAPS) { duke@435: if (field == NULL) { duke@435: THROW_0(vmSymbols::java_lang_NullPointerException()); duke@435: } duke@435: duke@435: oop reflected = JNIHandles::resolve_non_null(field); duke@435: oop mirror = java_lang_reflect_Field::clazz(reflected); duke@435: klassOop k = java_lang_Class::as_klassOop(mirror); duke@435: int slot = java_lang_reflect_Field::slot(reflected); duke@435: int modifiers = java_lang_reflect_Field::modifiers(reflected); duke@435: duke@435: if (must_be_static >= 0) { duke@435: int really_is_static = ((modifiers & JVM_ACC_STATIC) != 0); duke@435: if (must_be_static != really_is_static) { duke@435: THROW_0(vmSymbols::java_lang_IllegalArgumentException()); duke@435: } duke@435: } duke@435: duke@435: int offset = instanceKlass::cast(k)->offset_from_fields(slot); duke@435: return field_offset_from_byte_offset(offset); duke@435: } duke@435: duke@435: UNSAFE_ENTRY(jlong, Unsafe_ObjectFieldOffset(JNIEnv *env, jobject unsafe, jobject field)) duke@435: UnsafeWrapper("Unsafe_ObjectFieldOffset"); duke@435: return find_field_offset(field, 0, THREAD); duke@435: UNSAFE_END duke@435: duke@435: UNSAFE_ENTRY(jlong, Unsafe_StaticFieldOffset(JNIEnv *env, jobject unsafe, jobject field)) duke@435: UnsafeWrapper("Unsafe_StaticFieldOffset"); duke@435: return find_field_offset(field, 1, THREAD); duke@435: UNSAFE_END duke@435: duke@435: UNSAFE_ENTRY(jobject, Unsafe_StaticFieldBaseFromField(JNIEnv *env, jobject unsafe, jobject field)) duke@435: UnsafeWrapper("Unsafe_StaticFieldBase"); duke@435: // Note: In this VM implementation, a field address is always a short duke@435: // offset from the base of a a klass metaobject. Thus, the full dynamic duke@435: // range of the return type is never used. However, some implementations duke@435: // might put the static field inside an array shared by many classes, duke@435: // or even at a fixed address, in which case the address could be quite duke@435: // large. In that last case, this function would return NULL, since duke@435: // the address would operate alone, without any base pointer. duke@435: duke@435: if (field == NULL) THROW_0(vmSymbols::java_lang_NullPointerException()); duke@435: duke@435: oop reflected = JNIHandles::resolve_non_null(field); duke@435: oop mirror = java_lang_reflect_Field::clazz(reflected); duke@435: int modifiers = java_lang_reflect_Field::modifiers(reflected); duke@435: duke@435: if ((modifiers & JVM_ACC_STATIC) == 0) { duke@435: THROW_0(vmSymbols::java_lang_IllegalArgumentException()); duke@435: } duke@435: duke@435: return JNIHandles::make_local(env, java_lang_Class::as_klassOop(mirror)); duke@435: UNSAFE_END duke@435: duke@435: //@deprecated duke@435: UNSAFE_ENTRY(jint, Unsafe_FieldOffset(JNIEnv *env, jobject unsafe, jobject field)) duke@435: UnsafeWrapper("Unsafe_FieldOffset"); duke@435: // tries (but fails) to be polymorphic between static and non-static: duke@435: jlong offset = find_field_offset(field, -1, THREAD); duke@435: guarantee(offset == (jint)offset, "offset fits in 32 bits"); duke@435: return (jint)offset; duke@435: UNSAFE_END duke@435: duke@435: //@deprecated duke@435: UNSAFE_ENTRY(jobject, Unsafe_StaticFieldBaseFromClass(JNIEnv *env, jobject unsafe, jobject clazz)) duke@435: UnsafeWrapper("Unsafe_StaticFieldBase"); duke@435: if (clazz == NULL) { duke@435: THROW_0(vmSymbols::java_lang_NullPointerException()); duke@435: } duke@435: return JNIHandles::make_local(env, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz))); duke@435: UNSAFE_END duke@435: duke@435: UNSAFE_ENTRY(void, Unsafe_EnsureClassInitialized(JNIEnv *env, jobject unsafe, jobject clazz)) duke@435: UnsafeWrapper("Unsafe_EnsureClassInitialized"); duke@435: if (clazz == NULL) { duke@435: THROW(vmSymbols::java_lang_NullPointerException()); duke@435: } duke@435: oop mirror = JNIHandles::resolve_non_null(clazz); duke@435: instanceKlass* k = instanceKlass::cast(java_lang_Class::as_klassOop(mirror)); duke@435: if (k != NULL) { duke@435: k->initialize(CHECK); duke@435: } duke@435: UNSAFE_END duke@435: duke@435: static void getBaseAndScale(int& base, int& scale, jclass acls, TRAPS) { duke@435: if (acls == NULL) { duke@435: THROW(vmSymbols::java_lang_NullPointerException()); duke@435: } duke@435: oop mirror = JNIHandles::resolve_non_null(acls); duke@435: klassOop k = java_lang_Class::as_klassOop(mirror); duke@435: if (k == NULL || !k->klass_part()->oop_is_array()) { duke@435: THROW(vmSymbols::java_lang_InvalidClassException()); duke@435: } else if (k->klass_part()->oop_is_objArray()) { duke@435: base = arrayOopDesc::base_offset_in_bytes(T_OBJECT); coleenp@548: scale = heapOopSize; duke@435: } else if (k->klass_part()->oop_is_typeArray()) { duke@435: typeArrayKlass* tak = typeArrayKlass::cast(k); duke@435: base = tak->array_header_in_bytes(); duke@435: assert(base == arrayOopDesc::base_offset_in_bytes(tak->element_type()), "array_header_size semantics ok"); duke@435: scale = (1 << tak->log2_element_size()); duke@435: } else { duke@435: ShouldNotReachHere(); duke@435: } duke@435: } duke@435: duke@435: UNSAFE_ENTRY(jint, Unsafe_ArrayBaseOffset(JNIEnv *env, jobject unsafe, jclass acls)) duke@435: UnsafeWrapper("Unsafe_ArrayBaseOffset"); duke@435: int base, scale; duke@435: getBaseAndScale(base, scale, acls, CHECK_0); duke@435: return field_offset_from_byte_offset(base); duke@435: UNSAFE_END duke@435: duke@435: duke@435: UNSAFE_ENTRY(jint, Unsafe_ArrayIndexScale(JNIEnv *env, jobject unsafe, jclass acls)) duke@435: UnsafeWrapper("Unsafe_ArrayIndexScale"); duke@435: int base, scale; duke@435: getBaseAndScale(base, scale, acls, CHECK_0); duke@435: // This VM packs both fields and array elements down to the byte. duke@435: // But watch out: If this changes, so that array references for duke@435: // a given primitive type (say, T_BOOLEAN) use different memory units duke@435: // than fields, this method MUST return zero for such arrays. duke@435: // For example, the VM used to store sub-word sized fields in full duke@435: // words in the object layout, so that accessors like getByte(Object,int) duke@435: // did not really do what one might expect for arrays. Therefore, duke@435: // this function used to report a zero scale factor, so that the user duke@435: // would know not to attempt to access sub-word array elements. duke@435: // // Code for unpacked fields: duke@435: // if (scale < wordSize) return 0; duke@435: duke@435: // The following allows for a pretty general fieldOffset cookie scheme, duke@435: // but requires it to be linear in byte offset. duke@435: return field_offset_from_byte_offset(scale) - field_offset_from_byte_offset(0); duke@435: UNSAFE_END duke@435: duke@435: duke@435: static inline void throw_new(JNIEnv *env, const char *ename) { duke@435: char buf[100]; duke@435: strcpy(buf, "java/lang/"); duke@435: strcat(buf, ename); duke@435: jclass cls = env->FindClass(buf); duke@435: char* msg = NULL; duke@435: env->ThrowNew(cls, msg); duke@435: } duke@435: duke@435: static jclass Unsafe_DefineClass(JNIEnv *env, jstring name, jbyteArray data, int offset, int length, jobject loader, jobject pd) { duke@435: { duke@435: // Code lifted from JDK 1.3 ClassLoader.c duke@435: duke@435: jbyte *body; duke@435: char *utfName; duke@435: jclass result = 0; duke@435: char buf[128]; duke@435: duke@435: if (UsePerfData) { duke@435: ClassLoader::unsafe_defineClassCallCounter()->inc(); duke@435: } duke@435: duke@435: if (data == NULL) { duke@435: throw_new(env, "NullPointerException"); duke@435: return 0; duke@435: } duke@435: duke@435: /* Work around 4153825. malloc crashes on Solaris when passed a duke@435: * negative size. duke@435: */ duke@435: if (length < 0) { duke@435: throw_new(env, "ArrayIndexOutOfBoundsException"); duke@435: return 0; duke@435: } duke@435: duke@435: body = NEW_C_HEAP_ARRAY(jbyte, length); duke@435: duke@435: if (body == 0) { duke@435: throw_new(env, "OutOfMemoryError"); duke@435: return 0; duke@435: } duke@435: duke@435: env->GetByteArrayRegion(data, offset, length, body); duke@435: duke@435: if (env->ExceptionOccurred()) duke@435: goto free_body; duke@435: duke@435: if (name != NULL) { duke@435: uint len = env->GetStringUTFLength(name); duke@435: int unicode_len = env->GetStringLength(name); duke@435: if (len >= sizeof(buf)) { duke@435: utfName = NEW_C_HEAP_ARRAY(char, len + 1); duke@435: if (utfName == NULL) { duke@435: throw_new(env, "OutOfMemoryError"); duke@435: goto free_body; duke@435: } duke@435: } else { duke@435: utfName = buf; duke@435: } duke@435: env->GetStringUTFRegion(name, 0, unicode_len, utfName); duke@435: //VerifyFixClassname(utfName); duke@435: for (uint i = 0; i < len; i++) { duke@435: if (utfName[i] == '.') utfName[i] = '/'; duke@435: } duke@435: } else { duke@435: utfName = NULL; duke@435: } duke@435: duke@435: result = JVM_DefineClass(env, utfName, loader, body, length, pd); duke@435: duke@435: if (utfName && utfName != buf) duke@435: FREE_C_HEAP_ARRAY(char, utfName); duke@435: duke@435: free_body: duke@435: FREE_C_HEAP_ARRAY(jbyte, body); duke@435: return result; duke@435: } duke@435: } duke@435: duke@435: duke@435: UNSAFE_ENTRY(jclass, Unsafe_DefineClass0(JNIEnv *env, jobject unsafe, jstring name, jbyteArray data, int offset, int length)) duke@435: UnsafeWrapper("Unsafe_DefineClass"); duke@435: { duke@435: ThreadToNativeFromVM ttnfv(thread); duke@435: duke@435: int depthFromDefineClass0 = 1; duke@435: jclass caller = JVM_GetCallerClass(env, depthFromDefineClass0); duke@435: jobject loader = (caller == NULL) ? NULL : JVM_GetClassLoader(env, caller); duke@435: jobject pd = (caller == NULL) ? NULL : JVM_GetProtectionDomain(env, caller); duke@435: duke@435: return Unsafe_DefineClass(env, name, data, offset, length, loader, pd); duke@435: } duke@435: UNSAFE_END duke@435: duke@435: duke@435: UNSAFE_ENTRY(jclass, Unsafe_DefineClass1(JNIEnv *env, jobject unsafe, jstring name, jbyteArray data, int offset, int length, jobject loader, jobject pd)) duke@435: UnsafeWrapper("Unsafe_DefineClass"); duke@435: { duke@435: ThreadToNativeFromVM ttnfv(thread); duke@435: duke@435: return Unsafe_DefineClass(env, name, data, offset, length, loader, pd); duke@435: } duke@435: UNSAFE_END duke@435: duke@435: duke@435: UNSAFE_ENTRY(void, Unsafe_MonitorEnter(JNIEnv *env, jobject unsafe, jobject jobj)) duke@435: UnsafeWrapper("Unsafe_MonitorEnter"); duke@435: { duke@435: if (jobj == NULL) { duke@435: THROW(vmSymbols::java_lang_NullPointerException()); duke@435: } duke@435: Handle obj(thread, JNIHandles::resolve_non_null(jobj)); duke@435: ObjectSynchronizer::jni_enter(obj, CHECK); duke@435: } duke@435: UNSAFE_END duke@435: duke@435: duke@435: UNSAFE_ENTRY(jboolean, Unsafe_TryMonitorEnter(JNIEnv *env, jobject unsafe, jobject jobj)) duke@435: UnsafeWrapper("Unsafe_TryMonitorEnter"); duke@435: { duke@435: if (jobj == NULL) { duke@435: THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); duke@435: } duke@435: Handle obj(thread, JNIHandles::resolve_non_null(jobj)); duke@435: bool res = ObjectSynchronizer::jni_try_enter(obj, CHECK_0); duke@435: return (res ? JNI_TRUE : JNI_FALSE); duke@435: } duke@435: UNSAFE_END duke@435: duke@435: duke@435: UNSAFE_ENTRY(void, Unsafe_MonitorExit(JNIEnv *env, jobject unsafe, jobject jobj)) duke@435: UnsafeWrapper("Unsafe_MonitorExit"); duke@435: { duke@435: if (jobj == NULL) { duke@435: THROW(vmSymbols::java_lang_NullPointerException()); duke@435: } duke@435: Handle obj(THREAD, JNIHandles::resolve_non_null(jobj)); duke@435: ObjectSynchronizer::jni_exit(obj(), CHECK); duke@435: } duke@435: UNSAFE_END duke@435: duke@435: duke@435: UNSAFE_ENTRY(void, Unsafe_ThrowException(JNIEnv *env, jobject unsafe, jthrowable thr)) duke@435: UnsafeWrapper("Unsafe_ThrowException"); duke@435: { duke@435: ThreadToNativeFromVM ttnfv(thread); duke@435: env->Throw(thr); duke@435: } duke@435: UNSAFE_END duke@435: duke@435: // JSR166 ------------------------------------------------------------------ duke@435: duke@435: UNSAFE_ENTRY(jboolean, Unsafe_CompareAndSwapObject(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jobject e_h, jobject x_h)) duke@435: UnsafeWrapper("Unsafe_CompareAndSwapObject"); duke@435: oop x = JNIHandles::resolve(x_h); duke@435: oop e = JNIHandles::resolve(e_h); duke@435: oop p = JNIHandles::resolve(obj); coleenp@548: HeapWord* addr = (HeapWord *)index_oop_from_field_offset_long(p, offset); ysr@777: update_barrier_set_pre((void*)addr, e); coleenp@548: oop res = oopDesc::atomic_compare_exchange_oop(x, addr, e); coleenp@548: jboolean success = (res == e); duke@435: if (success) coleenp@548: update_barrier_set((void*)addr, x); duke@435: return success; duke@435: UNSAFE_END duke@435: duke@435: UNSAFE_ENTRY(jboolean, Unsafe_CompareAndSwapInt(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jint e, jint x)) duke@435: UnsafeWrapper("Unsafe_CompareAndSwapInt"); duke@435: oop p = JNIHandles::resolve(obj); duke@435: jint* addr = (jint *) index_oop_from_field_offset_long(p, offset); duke@435: return (jint)(Atomic::cmpxchg(x, addr, e)) == e; duke@435: UNSAFE_END duke@435: duke@435: UNSAFE_ENTRY(jboolean, Unsafe_CompareAndSwapLong(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jlong e, jlong x)) duke@435: UnsafeWrapper("Unsafe_CompareAndSwapLong"); duke@435: Handle p (THREAD, JNIHandles::resolve(obj)); duke@435: jlong* addr = (jlong*)(index_oop_from_field_offset_long(p(), offset)); duke@435: if (VM_Version::supports_cx8()) duke@435: return (jlong)(Atomic::cmpxchg(x, addr, e)) == e; duke@435: else { duke@435: jboolean success = false; duke@435: ObjectLocker ol(p, THREAD); duke@435: if (*addr == e) { *addr = x; success = true; } duke@435: return success; duke@435: } duke@435: UNSAFE_END duke@435: duke@435: UNSAFE_ENTRY(void, Unsafe_Park(JNIEnv *env, jobject unsafe, jboolean isAbsolute, jlong time)) duke@435: UnsafeWrapper("Unsafe_Park"); duke@435: JavaThreadParkedState jtps(thread, time != 0); duke@435: thread->parker()->park(isAbsolute != 0, time); duke@435: UNSAFE_END duke@435: duke@435: UNSAFE_ENTRY(void, Unsafe_Unpark(JNIEnv *env, jobject unsafe, jobject jthread)) duke@435: UnsafeWrapper("Unsafe_Unpark"); duke@435: Parker* p = NULL; duke@435: if (jthread != NULL) { duke@435: oop java_thread = JNIHandles::resolve_non_null(jthread); duke@435: if (java_thread != NULL) { duke@435: jlong lp = java_lang_Thread::park_event(java_thread); duke@435: if (lp != 0) { duke@435: // This cast is OK even though the jlong might have been read duke@435: // non-atomically on 32bit systems, since there, one word will duke@435: // always be zero anyway and the value set is always the same duke@435: p = (Parker*)addr_from_java(lp); duke@435: } else { duke@435: // Grab lock if apparently null or using older version of library duke@435: MutexLocker mu(Threads_lock); duke@435: java_thread = JNIHandles::resolve_non_null(jthread); duke@435: if (java_thread != NULL) { duke@435: JavaThread* thr = java_lang_Thread::thread(java_thread); duke@435: if (thr != NULL) { duke@435: p = thr->parker(); duke@435: if (p != NULL) { // Bind to Java thread for next time. duke@435: java_lang_Thread::set_park_event(java_thread, addr_to_java(p)); duke@435: } duke@435: } duke@435: } duke@435: } duke@435: } duke@435: } duke@435: if (p != NULL) { duke@435: p->unpark(); duke@435: } duke@435: UNSAFE_END duke@435: duke@435: UNSAFE_ENTRY(jint, Unsafe_Loadavg(JNIEnv *env, jobject unsafe, jdoubleArray loadavg, jint nelem)) duke@435: UnsafeWrapper("Unsafe_Loadavg"); duke@435: const int max_nelem = 3; duke@435: double la[max_nelem]; duke@435: jint ret; duke@435: duke@435: typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(loadavg)); duke@435: assert(a->is_typeArray(), "must be type array"); duke@435: duke@435: if (nelem < 0 || nelem > max_nelem || a->length() < nelem) { duke@435: ThreadToNativeFromVM ttnfv(thread); duke@435: throw_new(env, "ArrayIndexOutOfBoundsException"); duke@435: return -1; duke@435: } duke@435: duke@435: ret = os::loadavg(la, nelem); duke@435: if (ret == -1) return -1; duke@435: duke@435: // if successful, ret is the number of samples actually retrieved. duke@435: assert(ret >= 0 && ret <= max_nelem, "Unexpected loadavg return value"); duke@435: switch(ret) { duke@435: case 3: a->double_at_put(2, (jdouble)la[2]); // fall through duke@435: case 2: a->double_at_put(1, (jdouble)la[1]); // fall through duke@435: case 1: a->double_at_put(0, (jdouble)la[0]); break; duke@435: } duke@435: return ret; duke@435: UNSAFE_END duke@435: duke@435: UNSAFE_ENTRY(void, Unsafe_PrefetchRead(JNIEnv* env, jclass ignored, jobject obj, jlong offset)) duke@435: UnsafeWrapper("Unsafe_PrefetchRead"); duke@435: oop p = JNIHandles::resolve(obj); duke@435: void* addr = index_oop_from_field_offset_long(p, 0); duke@435: Prefetch::read(addr, (intx)offset); duke@435: UNSAFE_END duke@435: duke@435: UNSAFE_ENTRY(void, Unsafe_PrefetchWrite(JNIEnv* env, jclass ignored, jobject obj, jlong offset)) duke@435: UnsafeWrapper("Unsafe_PrefetchWrite"); duke@435: oop p = JNIHandles::resolve(obj); duke@435: void* addr = index_oop_from_field_offset_long(p, 0); duke@435: Prefetch::write(addr, (intx)offset); duke@435: UNSAFE_END duke@435: duke@435: duke@435: /// JVM_RegisterUnsafeMethods duke@435: duke@435: #define ADR "J" duke@435: duke@435: #define LANG "Ljava/lang/" duke@435: duke@435: #define OBJ LANG"Object;" duke@435: #define CLS LANG"Class;" duke@435: #define CTR LANG"reflect/Constructor;" duke@435: #define FLD LANG"reflect/Field;" duke@435: #define MTH LANG"reflect/Method;" duke@435: #define THR LANG"Throwable;" duke@435: duke@435: #define DC0_Args LANG"String;[BII" duke@435: #define DC1_Args DC0_Args LANG"ClassLoader;" "Ljava/security/ProtectionDomain;" duke@435: duke@435: #define CC (char*) /*cast a literal from (const char*)*/ duke@435: #define FN_PTR(f) CAST_FROM_FN_PTR(void*, &f) duke@435: duke@435: // define deprecated accessors for compabitility with 1.4.0 duke@435: #define DECLARE_GETSETOOP_140(Boolean, Z) \ duke@435: {CC"get"#Boolean, CC"("OBJ"I)"#Z, FN_PTR(Unsafe_Get##Boolean##140)}, \ duke@435: {CC"put"#Boolean, CC"("OBJ"I"#Z")V", FN_PTR(Unsafe_Set##Boolean##140)} duke@435: duke@435: // Note: In 1.4.1, getObject and kin take both int and long offsets. duke@435: #define DECLARE_GETSETOOP_141(Boolean, Z) \ duke@435: {CC"get"#Boolean, CC"("OBJ"J)"#Z, FN_PTR(Unsafe_Get##Boolean)}, \ duke@435: {CC"put"#Boolean, CC"("OBJ"J"#Z")V", FN_PTR(Unsafe_Set##Boolean)} duke@435: duke@435: // Note: In 1.5.0, there are volatile versions too duke@435: #define DECLARE_GETSETOOP(Boolean, Z) \ duke@435: {CC"get"#Boolean, CC"("OBJ"J)"#Z, FN_PTR(Unsafe_Get##Boolean)}, \ duke@435: {CC"put"#Boolean, CC"("OBJ"J"#Z")V", FN_PTR(Unsafe_Set##Boolean)}, \ duke@435: {CC"get"#Boolean"Volatile", CC"("OBJ"J)"#Z, FN_PTR(Unsafe_Get##Boolean##Volatile)}, \ duke@435: {CC"put"#Boolean"Volatile", CC"("OBJ"J"#Z")V", FN_PTR(Unsafe_Set##Boolean##Volatile)} duke@435: duke@435: duke@435: #define DECLARE_GETSETNATIVE(Byte, B) \ duke@435: {CC"get"#Byte, CC"("ADR")"#B, FN_PTR(Unsafe_GetNative##Byte)}, \ duke@435: {CC"put"#Byte, CC"("ADR#B")V", FN_PTR(Unsafe_SetNative##Byte)} duke@435: duke@435: duke@435: duke@435: // %%% These are temporarily supported until the SDK sources duke@435: // contain the necessarily updated Unsafe.java. duke@435: static JNINativeMethod methods_140[] = { duke@435: duke@435: {CC"getObject", CC"("OBJ"I)"OBJ"", FN_PTR(Unsafe_GetObject140)}, duke@435: {CC"putObject", CC"("OBJ"I"OBJ")V", FN_PTR(Unsafe_SetObject140)}, duke@435: duke@435: DECLARE_GETSETOOP_140(Boolean, Z), duke@435: DECLARE_GETSETOOP_140(Byte, B), duke@435: DECLARE_GETSETOOP_140(Short, S), duke@435: DECLARE_GETSETOOP_140(Char, C), duke@435: DECLARE_GETSETOOP_140(Int, I), duke@435: DECLARE_GETSETOOP_140(Long, J), duke@435: DECLARE_GETSETOOP_140(Float, F), duke@435: DECLARE_GETSETOOP_140(Double, D), duke@435: duke@435: DECLARE_GETSETNATIVE(Byte, B), duke@435: DECLARE_GETSETNATIVE(Short, S), duke@435: DECLARE_GETSETNATIVE(Char, C), duke@435: DECLARE_GETSETNATIVE(Int, I), duke@435: DECLARE_GETSETNATIVE(Long, J), duke@435: DECLARE_GETSETNATIVE(Float, F), duke@435: DECLARE_GETSETNATIVE(Double, D), duke@435: duke@435: {CC"getAddress", CC"("ADR")"ADR, FN_PTR(Unsafe_GetNativeAddress)}, duke@435: {CC"putAddress", CC"("ADR""ADR")V", FN_PTR(Unsafe_SetNativeAddress)}, duke@435: duke@435: {CC"allocateMemory", CC"(J)"ADR, FN_PTR(Unsafe_AllocateMemory)}, duke@435: {CC"reallocateMemory", CC"("ADR"J)"ADR, FN_PTR(Unsafe_ReallocateMemory)}, duke@435: // {CC"setMemory", CC"("ADR"JB)V", FN_PTR(Unsafe_SetMemory)}, duke@435: // {CC"copyMemory", CC"("ADR ADR"J)V", FN_PTR(Unsafe_CopyMemory)}, duke@435: {CC"freeMemory", CC"("ADR")V", FN_PTR(Unsafe_FreeMemory)}, duke@435: duke@435: {CC"fieldOffset", CC"("FLD")I", FN_PTR(Unsafe_FieldOffset)}, //deprecated duke@435: {CC"staticFieldBase", CC"("CLS")"OBJ, FN_PTR(Unsafe_StaticFieldBaseFromClass)}, //deprecated duke@435: {CC"ensureClassInitialized",CC"("CLS")V", FN_PTR(Unsafe_EnsureClassInitialized)}, duke@435: {CC"arrayBaseOffset", CC"("CLS")I", FN_PTR(Unsafe_ArrayBaseOffset)}, duke@435: {CC"arrayIndexScale", CC"("CLS")I", FN_PTR(Unsafe_ArrayIndexScale)}, duke@435: {CC"addressSize", CC"()I", FN_PTR(Unsafe_AddressSize)}, duke@435: {CC"pageSize", CC"()I", FN_PTR(Unsafe_PageSize)}, duke@435: duke@435: {CC"defineClass", CC"("DC0_Args")"CLS, FN_PTR(Unsafe_DefineClass0)}, duke@435: {CC"defineClass", CC"("DC1_Args")"CLS, FN_PTR(Unsafe_DefineClass1)}, duke@435: {CC"allocateInstance", CC"("CLS")"OBJ, FN_PTR(Unsafe_AllocateInstance)}, duke@435: {CC"monitorEnter", CC"("OBJ")V", FN_PTR(Unsafe_MonitorEnter)}, duke@435: {CC"monitorExit", CC"("OBJ")V", FN_PTR(Unsafe_MonitorExit)}, duke@435: {CC"throwException", CC"("THR")V", FN_PTR(Unsafe_ThrowException)} duke@435: }; duke@435: duke@435: // These are the old methods prior to the JSR 166 changes in 1.5.0 duke@435: static JNINativeMethod methods_141[] = { duke@435: duke@435: {CC"getObject", CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObject)}, duke@435: {CC"putObject", CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObject)}, duke@435: duke@435: DECLARE_GETSETOOP_141(Boolean, Z), duke@435: DECLARE_GETSETOOP_141(Byte, B), duke@435: DECLARE_GETSETOOP_141(Short, S), duke@435: DECLARE_GETSETOOP_141(Char, C), duke@435: DECLARE_GETSETOOP_141(Int, I), duke@435: DECLARE_GETSETOOP_141(Long, J), duke@435: DECLARE_GETSETOOP_141(Float, F), duke@435: DECLARE_GETSETOOP_141(Double, D), duke@435: duke@435: DECLARE_GETSETNATIVE(Byte, B), duke@435: DECLARE_GETSETNATIVE(Short, S), duke@435: DECLARE_GETSETNATIVE(Char, C), duke@435: DECLARE_GETSETNATIVE(Int, I), duke@435: DECLARE_GETSETNATIVE(Long, J), duke@435: DECLARE_GETSETNATIVE(Float, F), duke@435: DECLARE_GETSETNATIVE(Double, D), duke@435: duke@435: {CC"getAddress", CC"("ADR")"ADR, FN_PTR(Unsafe_GetNativeAddress)}, duke@435: {CC"putAddress", CC"("ADR""ADR")V", FN_PTR(Unsafe_SetNativeAddress)}, duke@435: duke@435: {CC"allocateMemory", CC"(J)"ADR, FN_PTR(Unsafe_AllocateMemory)}, duke@435: {CC"reallocateMemory", CC"("ADR"J)"ADR, FN_PTR(Unsafe_ReallocateMemory)}, duke@435: // {CC"setMemory", CC"("ADR"JB)V", FN_PTR(Unsafe_SetMemory)}, duke@435: // {CC"copyMemory", CC"("ADR ADR"J)V", FN_PTR(Unsafe_CopyMemory)}, duke@435: {CC"freeMemory", CC"("ADR")V", FN_PTR(Unsafe_FreeMemory)}, duke@435: duke@435: {CC"objectFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_ObjectFieldOffset)}, duke@435: {CC"staticFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_StaticFieldOffset)}, duke@435: {CC"staticFieldBase", CC"("FLD")"OBJ, FN_PTR(Unsafe_StaticFieldBaseFromField)}, duke@435: {CC"ensureClassInitialized",CC"("CLS")V", FN_PTR(Unsafe_EnsureClassInitialized)}, duke@435: {CC"arrayBaseOffset", CC"("CLS")I", FN_PTR(Unsafe_ArrayBaseOffset)}, duke@435: {CC"arrayIndexScale", CC"("CLS")I", FN_PTR(Unsafe_ArrayIndexScale)}, duke@435: {CC"addressSize", CC"()I", FN_PTR(Unsafe_AddressSize)}, duke@435: {CC"pageSize", CC"()I", FN_PTR(Unsafe_PageSize)}, duke@435: duke@435: {CC"defineClass", CC"("DC0_Args")"CLS, FN_PTR(Unsafe_DefineClass0)}, duke@435: {CC"defineClass", CC"("DC1_Args")"CLS, FN_PTR(Unsafe_DefineClass1)}, duke@435: {CC"allocateInstance", CC"("CLS")"OBJ, FN_PTR(Unsafe_AllocateInstance)}, duke@435: {CC"monitorEnter", CC"("OBJ")V", FN_PTR(Unsafe_MonitorEnter)}, duke@435: {CC"monitorExit", CC"("OBJ")V", FN_PTR(Unsafe_MonitorExit)}, duke@435: {CC"throwException", CC"("THR")V", FN_PTR(Unsafe_ThrowException)} duke@435: duke@435: }; duke@435: duke@435: // These are the old methods prior to the JSR 166 changes in 1.6.0 duke@435: static JNINativeMethod methods_15[] = { duke@435: duke@435: {CC"getObject", CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObject)}, duke@435: {CC"putObject", CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObject)}, duke@435: {CC"getObjectVolatile",CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObjectVolatile)}, duke@435: {CC"putObjectVolatile",CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObjectVolatile)}, duke@435: duke@435: duke@435: DECLARE_GETSETOOP(Boolean, Z), duke@435: DECLARE_GETSETOOP(Byte, B), duke@435: DECLARE_GETSETOOP(Short, S), duke@435: DECLARE_GETSETOOP(Char, C), duke@435: DECLARE_GETSETOOP(Int, I), duke@435: DECLARE_GETSETOOP(Long, J), duke@435: DECLARE_GETSETOOP(Float, F), duke@435: DECLARE_GETSETOOP(Double, D), duke@435: duke@435: DECLARE_GETSETNATIVE(Byte, B), duke@435: DECLARE_GETSETNATIVE(Short, S), duke@435: DECLARE_GETSETNATIVE(Char, C), duke@435: DECLARE_GETSETNATIVE(Int, I), duke@435: DECLARE_GETSETNATIVE(Long, J), duke@435: DECLARE_GETSETNATIVE(Float, F), duke@435: DECLARE_GETSETNATIVE(Double, D), duke@435: duke@435: {CC"getAddress", CC"("ADR")"ADR, FN_PTR(Unsafe_GetNativeAddress)}, duke@435: {CC"putAddress", CC"("ADR""ADR")V", FN_PTR(Unsafe_SetNativeAddress)}, duke@435: duke@435: {CC"allocateMemory", CC"(J)"ADR, FN_PTR(Unsafe_AllocateMemory)}, duke@435: {CC"reallocateMemory", CC"("ADR"J)"ADR, FN_PTR(Unsafe_ReallocateMemory)}, duke@435: // {CC"setMemory", CC"("ADR"JB)V", FN_PTR(Unsafe_SetMemory)}, duke@435: // {CC"copyMemory", CC"("ADR ADR"J)V", FN_PTR(Unsafe_CopyMemory)}, duke@435: {CC"freeMemory", CC"("ADR")V", FN_PTR(Unsafe_FreeMemory)}, duke@435: duke@435: {CC"objectFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_ObjectFieldOffset)}, duke@435: {CC"staticFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_StaticFieldOffset)}, duke@435: {CC"staticFieldBase", CC"("FLD")"OBJ, FN_PTR(Unsafe_StaticFieldBaseFromField)}, duke@435: {CC"ensureClassInitialized",CC"("CLS")V", FN_PTR(Unsafe_EnsureClassInitialized)}, duke@435: {CC"arrayBaseOffset", CC"("CLS")I", FN_PTR(Unsafe_ArrayBaseOffset)}, duke@435: {CC"arrayIndexScale", CC"("CLS")I", FN_PTR(Unsafe_ArrayIndexScale)}, duke@435: {CC"addressSize", CC"()I", FN_PTR(Unsafe_AddressSize)}, duke@435: {CC"pageSize", CC"()I", FN_PTR(Unsafe_PageSize)}, duke@435: duke@435: {CC"defineClass", CC"("DC0_Args")"CLS, FN_PTR(Unsafe_DefineClass0)}, duke@435: {CC"defineClass", CC"("DC1_Args")"CLS, FN_PTR(Unsafe_DefineClass1)}, duke@435: {CC"allocateInstance", CC"("CLS")"OBJ, FN_PTR(Unsafe_AllocateInstance)}, duke@435: {CC"monitorEnter", CC"("OBJ")V", FN_PTR(Unsafe_MonitorEnter)}, duke@435: {CC"monitorExit", CC"("OBJ")V", FN_PTR(Unsafe_MonitorExit)}, duke@435: {CC"throwException", CC"("THR")V", FN_PTR(Unsafe_ThrowException)}, duke@435: {CC"compareAndSwapObject", CC"("OBJ"J"OBJ""OBJ")Z", FN_PTR(Unsafe_CompareAndSwapObject)}, duke@435: {CC"compareAndSwapInt", CC"("OBJ"J""I""I"")Z", FN_PTR(Unsafe_CompareAndSwapInt)}, duke@435: {CC"compareAndSwapLong", CC"("OBJ"J""J""J"")Z", FN_PTR(Unsafe_CompareAndSwapLong)}, duke@435: {CC"park", CC"(ZJ)V", FN_PTR(Unsafe_Park)}, duke@435: {CC"unpark", CC"("OBJ")V", FN_PTR(Unsafe_Unpark)} duke@435: duke@435: }; duke@435: duke@435: // These are the correct methods, moving forward: duke@435: static JNINativeMethod methods[] = { duke@435: duke@435: {CC"getObject", CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObject)}, duke@435: {CC"putObject", CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObject)}, duke@435: {CC"getObjectVolatile",CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObjectVolatile)}, duke@435: {CC"putObjectVolatile",CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObjectVolatile)}, duke@435: duke@435: duke@435: DECLARE_GETSETOOP(Boolean, Z), duke@435: DECLARE_GETSETOOP(Byte, B), duke@435: DECLARE_GETSETOOP(Short, S), duke@435: DECLARE_GETSETOOP(Char, C), duke@435: DECLARE_GETSETOOP(Int, I), duke@435: DECLARE_GETSETOOP(Long, J), duke@435: DECLARE_GETSETOOP(Float, F), duke@435: DECLARE_GETSETOOP(Double, D), duke@435: duke@435: DECLARE_GETSETNATIVE(Byte, B), duke@435: DECLARE_GETSETNATIVE(Short, S), duke@435: DECLARE_GETSETNATIVE(Char, C), duke@435: DECLARE_GETSETNATIVE(Int, I), duke@435: DECLARE_GETSETNATIVE(Long, J), duke@435: DECLARE_GETSETNATIVE(Float, F), duke@435: DECLARE_GETSETNATIVE(Double, D), duke@435: duke@435: {CC"getAddress", CC"("ADR")"ADR, FN_PTR(Unsafe_GetNativeAddress)}, duke@435: {CC"putAddress", CC"("ADR""ADR")V", FN_PTR(Unsafe_SetNativeAddress)}, duke@435: duke@435: {CC"allocateMemory", CC"(J)"ADR, FN_PTR(Unsafe_AllocateMemory)}, duke@435: {CC"reallocateMemory", CC"("ADR"J)"ADR, FN_PTR(Unsafe_ReallocateMemory)}, duke@435: // {CC"setMemory", CC"("ADR"JB)V", FN_PTR(Unsafe_SetMemory)}, duke@435: // {CC"copyMemory", CC"("ADR ADR"J)V", FN_PTR(Unsafe_CopyMemory)}, duke@435: {CC"freeMemory", CC"("ADR")V", FN_PTR(Unsafe_FreeMemory)}, duke@435: duke@435: {CC"objectFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_ObjectFieldOffset)}, duke@435: {CC"staticFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_StaticFieldOffset)}, duke@435: {CC"staticFieldBase", CC"("FLD")"OBJ, FN_PTR(Unsafe_StaticFieldBaseFromField)}, duke@435: {CC"ensureClassInitialized",CC"("CLS")V", FN_PTR(Unsafe_EnsureClassInitialized)}, duke@435: {CC"arrayBaseOffset", CC"("CLS")I", FN_PTR(Unsafe_ArrayBaseOffset)}, duke@435: {CC"arrayIndexScale", CC"("CLS")I", FN_PTR(Unsafe_ArrayIndexScale)}, duke@435: {CC"addressSize", CC"()I", FN_PTR(Unsafe_AddressSize)}, duke@435: {CC"pageSize", CC"()I", FN_PTR(Unsafe_PageSize)}, duke@435: duke@435: {CC"defineClass", CC"("DC0_Args")"CLS, FN_PTR(Unsafe_DefineClass0)}, duke@435: {CC"defineClass", CC"("DC1_Args")"CLS, FN_PTR(Unsafe_DefineClass1)}, duke@435: {CC"allocateInstance", CC"("CLS")"OBJ, FN_PTR(Unsafe_AllocateInstance)}, duke@435: {CC"monitorEnter", CC"("OBJ")V", FN_PTR(Unsafe_MonitorEnter)}, duke@435: {CC"monitorExit", CC"("OBJ")V", FN_PTR(Unsafe_MonitorExit)}, duke@435: {CC"tryMonitorEnter", CC"("OBJ")Z", FN_PTR(Unsafe_TryMonitorEnter)}, duke@435: {CC"throwException", CC"("THR")V", FN_PTR(Unsafe_ThrowException)}, duke@435: {CC"compareAndSwapObject", CC"("OBJ"J"OBJ""OBJ")Z", FN_PTR(Unsafe_CompareAndSwapObject)}, duke@435: {CC"compareAndSwapInt", CC"("OBJ"J""I""I"")Z", FN_PTR(Unsafe_CompareAndSwapInt)}, duke@435: {CC"compareAndSwapLong", CC"("OBJ"J""J""J"")Z", FN_PTR(Unsafe_CompareAndSwapLong)}, duke@435: {CC"putOrderedObject", CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetOrderedObject)}, duke@435: {CC"putOrderedInt", CC"("OBJ"JI)V", FN_PTR(Unsafe_SetOrderedInt)}, duke@435: {CC"putOrderedLong", CC"("OBJ"JJ)V", FN_PTR(Unsafe_SetOrderedLong)}, duke@435: {CC"park", CC"(ZJ)V", FN_PTR(Unsafe_Park)}, duke@435: {CC"unpark", CC"("OBJ")V", FN_PTR(Unsafe_Unpark)} duke@435: duke@435: // {CC"getLoadAverage", CC"([DI)I", FN_PTR(Unsafe_Loadavg)}, duke@435: duke@435: // {CC"prefetchRead", CC"("OBJ"J)V", FN_PTR(Unsafe_PrefetchRead)}, duke@435: // {CC"prefetchWrite", CC"("OBJ"J)V", FN_PTR(Unsafe_PrefetchWrite)} duke@435: // {CC"prefetchReadStatic", CC"("OBJ"J)V", FN_PTR(Unsafe_PrefetchRead)}, duke@435: // {CC"prefetchWriteStatic",CC"("OBJ"J)V", FN_PTR(Unsafe_PrefetchWrite)} duke@435: duke@435: }; duke@435: duke@435: JNINativeMethod loadavg_method[] = { duke@435: {CC"getLoadAverage", CC"([DI)I", FN_PTR(Unsafe_Loadavg)} duke@435: }; duke@435: duke@435: JNINativeMethod prefetch_methods[] = { duke@435: {CC"prefetchRead", CC"("OBJ"J)V", FN_PTR(Unsafe_PrefetchRead)}, duke@435: {CC"prefetchWrite", CC"("OBJ"J)V", FN_PTR(Unsafe_PrefetchWrite)}, duke@435: {CC"prefetchReadStatic", CC"("OBJ"J)V", FN_PTR(Unsafe_PrefetchRead)}, duke@435: {CC"prefetchWriteStatic",CC"("OBJ"J)V", FN_PTR(Unsafe_PrefetchWrite)} duke@435: }; duke@435: duke@435: JNINativeMethod memcopy_methods[] = { duke@435: {CC"copyMemory", CC"("OBJ"J"OBJ"JJ)V", FN_PTR(Unsafe_CopyMemory2)}, duke@435: {CC"setMemory", CC"("OBJ"JJB)V", FN_PTR(Unsafe_SetMemory2)} duke@435: }; duke@435: duke@435: JNINativeMethod memcopy_methods_15[] = { duke@435: {CC"setMemory", CC"("ADR"JB)V", FN_PTR(Unsafe_SetMemory)}, duke@435: {CC"copyMemory", CC"("ADR ADR"J)V", FN_PTR(Unsafe_CopyMemory)} duke@435: }; duke@435: duke@435: duke@435: #undef CC duke@435: #undef FN_PTR duke@435: duke@435: #undef ADR duke@435: #undef LANG duke@435: #undef OBJ duke@435: #undef CLS duke@435: #undef CTR duke@435: #undef FLD duke@435: #undef MTH duke@435: #undef THR duke@435: #undef DC0_Args duke@435: #undef DC1_Args duke@435: duke@435: #undef DECLARE_GETSETOOP duke@435: #undef DECLARE_GETSETNATIVE duke@435: duke@435: duke@435: // This one function is exported, used by NativeLookup. duke@435: // The Unsafe_xxx functions above are called only from the interpreter. duke@435: // The optimizer looks at names and signatures to recognize duke@435: // individual functions. duke@435: duke@435: JVM_ENTRY(void, JVM_RegisterUnsafeMethods(JNIEnv *env, jclass unsafecls)) duke@435: UnsafeWrapper("JVM_RegisterUnsafeMethods"); duke@435: { duke@435: ThreadToNativeFromVM ttnfv(thread); duke@435: { duke@435: env->RegisterNatives(unsafecls, loadavg_method, sizeof(loadavg_method)/sizeof(JNINativeMethod)); duke@435: if (env->ExceptionOccurred()) { duke@435: if (PrintMiscellaneous && (Verbose || WizardMode)) { duke@435: tty->print_cr("Warning: SDK 1.6 Unsafe.loadavg not found."); duke@435: } duke@435: env->ExceptionClear(); duke@435: } duke@435: } duke@435: { duke@435: env->RegisterNatives(unsafecls, prefetch_methods, sizeof(prefetch_methods)/sizeof(JNINativeMethod)); duke@435: if (env->ExceptionOccurred()) { duke@435: if (PrintMiscellaneous && (Verbose || WizardMode)) { duke@435: tty->print_cr("Warning: SDK 1.6 Unsafe.prefetchRead/Write not found."); duke@435: } duke@435: env->ExceptionClear(); duke@435: } duke@435: } duke@435: { duke@435: env->RegisterNatives(unsafecls, memcopy_methods, sizeof(memcopy_methods)/sizeof(JNINativeMethod)); duke@435: if (env->ExceptionOccurred()) { duke@435: if (PrintMiscellaneous && (Verbose || WizardMode)) { duke@435: tty->print_cr("Warning: SDK 1.7 Unsafe.copyMemory not found."); duke@435: } duke@435: env->ExceptionClear(); duke@435: env->RegisterNatives(unsafecls, memcopy_methods_15, sizeof(memcopy_methods_15)/sizeof(JNINativeMethod)); duke@435: if (env->ExceptionOccurred()) { duke@435: if (PrintMiscellaneous && (Verbose || WizardMode)) { duke@435: tty->print_cr("Warning: SDK 1.5 Unsafe.copyMemory not found."); duke@435: } duke@435: env->ExceptionClear(); duke@435: } duke@435: } duke@435: } duke@435: int status = env->RegisterNatives(unsafecls, methods, sizeof(methods)/sizeof(JNINativeMethod)); duke@435: if (env->ExceptionOccurred()) { duke@435: if (PrintMiscellaneous && (Verbose || WizardMode)) { duke@435: tty->print_cr("Warning: SDK 1.6 version of Unsafe not found."); duke@435: } duke@435: env->ExceptionClear(); duke@435: // %%% For now, be backward compatible with an older class: duke@435: status = env->RegisterNatives(unsafecls, methods_15, sizeof(methods_15)/sizeof(JNINativeMethod)); duke@435: } duke@435: if (env->ExceptionOccurred()) { duke@435: if (PrintMiscellaneous && (Verbose || WizardMode)) { duke@435: tty->print_cr("Warning: SDK 1.5 version of Unsafe not found."); duke@435: } duke@435: env->ExceptionClear(); duke@435: // %%% For now, be backward compatible with an older class: duke@435: status = env->RegisterNatives(unsafecls, methods_141, sizeof(methods_141)/sizeof(JNINativeMethod)); duke@435: } duke@435: if (env->ExceptionOccurred()) { duke@435: if (PrintMiscellaneous && (Verbose || WizardMode)) { duke@435: tty->print_cr("Warning: SDK 1.4.1 version of Unsafe not found."); duke@435: } duke@435: env->ExceptionClear(); duke@435: // %%% For now, be backward compatible with an older class: duke@435: status = env->RegisterNatives(unsafecls, methods_140, sizeof(methods_140)/sizeof(JNINativeMethod)); duke@435: } duke@435: guarantee(status == 0, "register unsafe natives"); duke@435: } duke@435: JVM_END