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/*
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* Copyright 2000-2007 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*
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*/
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/*
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* Implementation of class sun.misc.Unsafe
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*/
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#include "incls/_precompiled.incl"
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#include "incls/_unsafe.cpp.incl"
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#define MAX_OBJECT_SIZE \
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( arrayOopDesc::header_size(T_DOUBLE) * HeapWordSize \
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+ ((julong)max_jint * sizeof(double)) )
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#define UNSAFE_ENTRY(result_type, header) \
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JVM_ENTRY(result_type, header)
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// Can't use UNSAFE_LEAF because it has the signature of a straight
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// call into the runtime (just like JVM_LEAF, funny that) but it's
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// called like a Java Native and thus the wrapper built for it passes
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// arguments like a JNI call. It expects those arguments to be popped
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// from the stack on Intel like all good JNI args are, and adjusts the
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// stack according. Since the JVM_LEAF call expects no extra
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// arguments the stack isn't popped in the C code, is pushed by the
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// wrapper and we get sick.
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//#define UNSAFE_LEAF(result_type, header) \
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// JVM_LEAF(result_type, header)
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#define UNSAFE_END JVM_END
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#define UnsafeWrapper(arg) /*nothing, for the present*/
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inline void* addr_from_java(jlong addr) {
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// This assert fails in a variety of ways on 32-bit systems.
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// It is impossible to predict whether native code that converts
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// pointers to longs will sign-extend or zero-extend the addresses.
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//assert(addr == (uintptr_t)addr, "must not be odd high bits");
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return (void*)(uintptr_t)addr;
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}
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inline jlong addr_to_java(void* p) {
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assert(p == (void*)(uintptr_t)p, "must not be odd high bits");
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return (uintptr_t)p;
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}
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// Note: The VM's obj_field and related accessors use byte-scaled
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// ("unscaled") offsets, just as the unsafe methods do.
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// However, the method Unsafe.fieldOffset explicitly declines to
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// guarantee this. The field offset values manipulated by the Java user
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// through the Unsafe API are opaque cookies that just happen to be byte
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// offsets. We represent this state of affairs by passing the cookies
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// through conversion functions when going between the VM and the Unsafe API.
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// The conversion functions just happen to be no-ops at present.
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inline jlong field_offset_to_byte_offset(jlong field_offset) {
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return field_offset;
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}
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inline jlong field_offset_from_byte_offset(jlong byte_offset) {
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return byte_offset;
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}
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inline jint invocation_key_from_method_slot(jint slot) {
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return slot;
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}
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inline jint invocation_key_to_method_slot(jint key) {
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return key;
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}
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inline void* index_oop_from_field_offset_long(oop p, jlong field_offset) {
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jlong byte_offset = field_offset_to_byte_offset(field_offset);
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#ifdef ASSERT
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if (p != NULL) {
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assert(byte_offset >= 0 && byte_offset <= (jlong)MAX_OBJECT_SIZE, "sane offset");
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if (byte_offset == (jint)byte_offset) {
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void* ptr_plus_disp = (address)p + byte_offset;
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assert((void*)p->obj_field_addr((jint)byte_offset) == ptr_plus_disp,
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"raw [ptr+disp] must be consistent with oop::field_base");
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}
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}
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#endif
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if (sizeof(char*) == sizeof(jint)) // (this constant folds!)
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return (address)p + (jint) byte_offset;
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else
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return (address)p + byte_offset;
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}
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// Externally callable versions:
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// (Use these in compiler intrinsics which emulate unsafe primitives.)
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jlong Unsafe_field_offset_to_byte_offset(jlong field_offset) {
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return field_offset;
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}
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jlong Unsafe_field_offset_from_byte_offset(jlong byte_offset) {
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return byte_offset;
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}
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jint Unsafe_invocation_key_from_method_slot(jint slot) {
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return invocation_key_from_method_slot(slot);
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}
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jint Unsafe_invocation_key_to_method_slot(jint key) {
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return invocation_key_to_method_slot(key);
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}
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///// Data in the Java heap.
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#define GET_FIELD(obj, offset, type_name, v) \
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oop p = JNIHandles::resolve(obj); \
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type_name v = *(type_name*)index_oop_from_field_offset_long(p, offset)
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#define SET_FIELD(obj, offset, type_name, x) \
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oop p = JNIHandles::resolve(obj); \
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*(type_name*)index_oop_from_field_offset_long(p, offset) = x
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#define GET_FIELD_VOLATILE(obj, offset, type_name, v) \
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oop p = JNIHandles::resolve(obj); \
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volatile type_name v = *(volatile type_name*)index_oop_from_field_offset_long(p, offset)
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#define SET_FIELD_VOLATILE(obj, offset, type_name, x) \
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oop p = JNIHandles::resolve(obj); \
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*(volatile type_name*)index_oop_from_field_offset_long(p, offset) = x; \
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OrderAccess::fence();
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// Get/SetObject must be special-cased, since it works with handles.
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// The xxx140 variants for backward compatibility do not allow a full-width offset.
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UNSAFE_ENTRY(jobject, Unsafe_GetObject140(JNIEnv *env, jobject unsafe, jobject obj, jint offset))
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UnsafeWrapper("Unsafe_GetObject");
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if (obj == NULL) THROW_0(vmSymbols::java_lang_NullPointerException());
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GET_FIELD(obj, offset, oop, v);
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return JNIHandles::make_local(env, v);
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UNSAFE_END
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UNSAFE_ENTRY(void, Unsafe_SetObject140(JNIEnv *env, jobject unsafe, jobject obj, jint offset, jobject x_h))
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UnsafeWrapper("Unsafe_SetObject");
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if (obj == NULL) THROW(vmSymbols::java_lang_NullPointerException());
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oop x = JNIHandles::resolve(x_h);
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//SET_FIELD(obj, offset, oop, x);
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oop p = JNIHandles::resolve(obj);
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if (x != NULL) {
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// If there is a heap base pointer, we are obliged to emit a store barrier.
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oop_store((oop*)index_oop_from_field_offset_long(p, offset), x);
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} else {
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*(oop*)index_oop_from_field_offset_long(p, offset) = x;
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}
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UNSAFE_END
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// The normal variants allow a null base pointer with an arbitrary address.
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// But if the base pointer is non-null, the offset should make some sense.
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// That is, it should be in the range [0, MAX_OBJECT_SIZE].
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UNSAFE_ENTRY(jobject, Unsafe_GetObject(JNIEnv *env, jobject unsafe, jobject obj, jlong offset))
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UnsafeWrapper("Unsafe_GetObject");
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GET_FIELD(obj, offset, oop, v);
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return JNIHandles::make_local(env, v);
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UNSAFE_END
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UNSAFE_ENTRY(void, Unsafe_SetObject(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jobject x_h))
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UnsafeWrapper("Unsafe_SetObject");
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oop x = JNIHandles::resolve(x_h);
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oop p = JNIHandles::resolve(obj);
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oop_store((oop*)index_oop_from_field_offset_long(p, offset), x);
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UNSAFE_END
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UNSAFE_ENTRY(jobject, Unsafe_GetObjectVolatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset))
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UnsafeWrapper("Unsafe_GetObjectVolatile");
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GET_FIELD_VOLATILE(obj, offset, oop, v);
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return JNIHandles::make_local(env, v);
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UNSAFE_END
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UNSAFE_ENTRY(void, Unsafe_SetObjectVolatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jobject x_h))
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UnsafeWrapper("Unsafe_SetObjectVolatile");
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oop x = JNIHandles::resolve(x_h);
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oop p = JNIHandles::resolve(obj);
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oop_store((oop*)index_oop_from_field_offset_long(p, offset), x);
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OrderAccess::fence();
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UNSAFE_END
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// Volatile long versions must use locks if !VM_Version::supports_cx8().
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// support_cx8 is a surrogate for 'supports atomic long memory ops'.
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UNSAFE_ENTRY(jlong, Unsafe_GetLongVolatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset))
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UnsafeWrapper("Unsafe_GetLongVolatile");
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{
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if (VM_Version::supports_cx8()) {
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GET_FIELD_VOLATILE(obj, offset, jlong, v);
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return v;
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}
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else {
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Handle p (THREAD, JNIHandles::resolve(obj));
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jlong* addr = (jlong*)(index_oop_from_field_offset_long(p(), offset));
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ObjectLocker ol(p, THREAD);
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jlong value = *addr;
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return value;
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}
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}
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UNSAFE_END
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UNSAFE_ENTRY(void, Unsafe_SetLongVolatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jlong x))
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UnsafeWrapper("Unsafe_SetLongVolatile");
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{
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if (VM_Version::supports_cx8()) {
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SET_FIELD_VOLATILE(obj, offset, jlong, x);
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}
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else {
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Handle p (THREAD, JNIHandles::resolve(obj));
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jlong* addr = (jlong*)(index_oop_from_field_offset_long(p(), offset));
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ObjectLocker ol(p, THREAD);
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*addr = x;
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}
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}
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UNSAFE_END
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#define DEFINE_GETSETOOP(jboolean, Boolean) \
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\
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UNSAFE_ENTRY(jboolean, Unsafe_Get##Boolean##140(JNIEnv *env, jobject unsafe, jobject obj, jint offset)) \
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UnsafeWrapper("Unsafe_Get"#Boolean); \
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if (obj == NULL) THROW_0(vmSymbols::java_lang_NullPointerException()); \
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GET_FIELD(obj, offset, jboolean, v); \
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return v; \
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UNSAFE_END \
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\
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UNSAFE_ENTRY(void, Unsafe_Set##Boolean##140(JNIEnv *env, jobject unsafe, jobject obj, jint offset, jboolean x)) \
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UnsafeWrapper("Unsafe_Set"#Boolean); \
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if (obj == NULL) THROW(vmSymbols::java_lang_NullPointerException()); \
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SET_FIELD(obj, offset, jboolean, x); \
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UNSAFE_END \
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\
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UNSAFE_ENTRY(jboolean, Unsafe_Get##Boolean(JNIEnv *env, jobject unsafe, jobject obj, jlong offset)) \
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UnsafeWrapper("Unsafe_Get"#Boolean); \
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GET_FIELD(obj, offset, jboolean, v); \
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return v; \
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UNSAFE_END \
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\
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UNSAFE_ENTRY(void, Unsafe_Set##Boolean(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jboolean x)) \
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UnsafeWrapper("Unsafe_Set"#Boolean); \
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SET_FIELD(obj, offset, jboolean, x); \
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UNSAFE_END \
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\
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// END DEFINE_GETSETOOP.
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#define DEFINE_GETSETOOP_VOLATILE(jboolean, Boolean) \
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\
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UNSAFE_ENTRY(jboolean, Unsafe_Get##Boolean##Volatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset)) \
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UnsafeWrapper("Unsafe_Get"#Boolean); \
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GET_FIELD_VOLATILE(obj, offset, jboolean, v); \
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return v; \
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UNSAFE_END \
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\
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UNSAFE_ENTRY(void, Unsafe_Set##Boolean##Volatile(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jboolean x)) \
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UnsafeWrapper("Unsafe_Set"#Boolean); \
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SET_FIELD_VOLATILE(obj, offset, jboolean, x); \
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UNSAFE_END \
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\
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// END DEFINE_GETSETOOP_VOLATILE.
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DEFINE_GETSETOOP(jboolean, Boolean)
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DEFINE_GETSETOOP(jbyte, Byte)
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DEFINE_GETSETOOP(jshort, Short);
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DEFINE_GETSETOOP(jchar, Char);
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DEFINE_GETSETOOP(jint, Int);
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DEFINE_GETSETOOP(jlong, Long);
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DEFINE_GETSETOOP(jfloat, Float);
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DEFINE_GETSETOOP(jdouble, Double);
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DEFINE_GETSETOOP_VOLATILE(jboolean, Boolean)
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DEFINE_GETSETOOP_VOLATILE(jbyte, Byte)
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DEFINE_GETSETOOP_VOLATILE(jshort, Short);
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DEFINE_GETSETOOP_VOLATILE(jchar, Char);
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DEFINE_GETSETOOP_VOLATILE(jint, Int);
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// no long -- handled specially
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DEFINE_GETSETOOP_VOLATILE(jfloat, Float);
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DEFINE_GETSETOOP_VOLATILE(jdouble, Double);
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#undef DEFINE_GETSETOOP
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// The non-intrinsified versions of setOrdered just use setVolatile
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UNSAFE_ENTRY(void, Unsafe_SetOrderedInt(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jint x)) \
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UnsafeWrapper("Unsafe_SetOrderedInt"); \
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SET_FIELD_VOLATILE(obj, offset, jint, x); \
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UNSAFE_END
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UNSAFE_ENTRY(void, Unsafe_SetOrderedObject(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jobject x_h))
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UnsafeWrapper("Unsafe_SetOrderedObject");
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oop x = JNIHandles::resolve(x_h);
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oop p = JNIHandles::resolve(obj);
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oop_store((oop*)index_oop_from_field_offset_long(p, offset), x);
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OrderAccess::fence();
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UNSAFE_END
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UNSAFE_ENTRY(void, Unsafe_SetOrderedLong(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jlong x))
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UnsafeWrapper("Unsafe_SetOrderedLong");
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{
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if (VM_Version::supports_cx8()) {
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SET_FIELD_VOLATILE(obj, offset, jlong, x);
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}
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else {
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Handle p (THREAD, JNIHandles::resolve(obj));
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jlong* addr = (jlong*)(index_oop_from_field_offset_long(p(), offset));
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ObjectLocker ol(p, THREAD);
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*addr = x;
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}
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}
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UNSAFE_END
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////// Data in the C heap.
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// Note: These do not throw NullPointerException for bad pointers.
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// They just crash. Only a oop base pointer can generate a NullPointerException.
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//
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#define DEFINE_GETSETNATIVE(java_type, Type, native_type) \
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\
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UNSAFE_ENTRY(java_type, Unsafe_GetNative##Type(JNIEnv *env, jobject unsafe, jlong addr)) \
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UnsafeWrapper("Unsafe_GetNative"#Type); \
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void* p = addr_from_java(addr); \
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JavaThread* t = JavaThread::current(); \
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t->set_doing_unsafe_access(true); \
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java_type x = *(volatile native_type*)p; \
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t->set_doing_unsafe_access(false); \
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return x; \
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UNSAFE_END \
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\
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UNSAFE_ENTRY(void, Unsafe_SetNative##Type(JNIEnv *env, jobject unsafe, jlong addr, java_type x)) \
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UnsafeWrapper("Unsafe_SetNative"#Type); \
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JavaThread* t = JavaThread::current(); \
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t->set_doing_unsafe_access(true); \
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void* p = addr_from_java(addr); \
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*(volatile native_type*)p = x; \
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t->set_doing_unsafe_access(false); \
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UNSAFE_END \
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\
|
|
359 |
// END DEFINE_GETSETNATIVE.
|
|
360 |
|
|
361 |
DEFINE_GETSETNATIVE(jbyte, Byte, signed char)
|
|
362 |
DEFINE_GETSETNATIVE(jshort, Short, signed short);
|
|
363 |
DEFINE_GETSETNATIVE(jchar, Char, unsigned short);
|
|
364 |
DEFINE_GETSETNATIVE(jint, Int, jint);
|
|
365 |
// no long -- handled specially
|
|
366 |
DEFINE_GETSETNATIVE(jfloat, Float, float);
|
|
367 |
DEFINE_GETSETNATIVE(jdouble, Double, double);
|
|
368 |
|
|
369 |
#undef DEFINE_GETSETNATIVE
|
|
370 |
|
|
371 |
UNSAFE_ENTRY(jlong, Unsafe_GetNativeLong(JNIEnv *env, jobject unsafe, jlong addr))
|
|
372 |
UnsafeWrapper("Unsafe_GetNativeLong");
|
|
373 |
JavaThread* t = JavaThread::current();
|
|
374 |
// We do it this way to avoid problems with access to heap using 64
|
|
375 |
// bit loads, as jlong in heap could be not 64-bit aligned, and on
|
|
376 |
// some CPUs (SPARC) it leads to SIGBUS.
|
|
377 |
t->set_doing_unsafe_access(true);
|
|
378 |
void* p = addr_from_java(addr);
|
|
379 |
jlong x;
|
|
380 |
if (((intptr_t)p & 7) == 0) {
|
|
381 |
// jlong is aligned, do a volatile access
|
|
382 |
x = *(volatile jlong*)p;
|
|
383 |
} else {
|
|
384 |
jlong_accessor acc;
|
|
385 |
acc.words[0] = ((volatile jint*)p)[0];
|
|
386 |
acc.words[1] = ((volatile jint*)p)[1];
|
|
387 |
x = acc.long_value;
|
|
388 |
}
|
|
389 |
t->set_doing_unsafe_access(false);
|
|
390 |
return x;
|
|
391 |
UNSAFE_END
|
|
392 |
|
|
393 |
UNSAFE_ENTRY(void, Unsafe_SetNativeLong(JNIEnv *env, jobject unsafe, jlong addr, jlong x))
|
|
394 |
UnsafeWrapper("Unsafe_SetNativeLong");
|
|
395 |
JavaThread* t = JavaThread::current();
|
|
396 |
// see comment for Unsafe_GetNativeLong
|
|
397 |
t->set_doing_unsafe_access(true);
|
|
398 |
void* p = addr_from_java(addr);
|
|
399 |
if (((intptr_t)p & 7) == 0) {
|
|
400 |
// jlong is aligned, do a volatile access
|
|
401 |
*(volatile jlong*)p = x;
|
|
402 |
} else {
|
|
403 |
jlong_accessor acc;
|
|
404 |
acc.long_value = x;
|
|
405 |
((volatile jint*)p)[0] = acc.words[0];
|
|
406 |
((volatile jint*)p)[1] = acc.words[1];
|
|
407 |
}
|
|
408 |
t->set_doing_unsafe_access(false);
|
|
409 |
UNSAFE_END
|
|
410 |
|
|
411 |
|
|
412 |
UNSAFE_ENTRY(jlong, Unsafe_GetNativeAddress(JNIEnv *env, jobject unsafe, jlong addr))
|
|
413 |
UnsafeWrapper("Unsafe_GetNativeAddress");
|
|
414 |
void* p = addr_from_java(addr);
|
|
415 |
return addr_to_java(*(void**)p);
|
|
416 |
UNSAFE_END
|
|
417 |
|
|
418 |
UNSAFE_ENTRY(void, Unsafe_SetNativeAddress(JNIEnv *env, jobject unsafe, jlong addr, jlong x))
|
|
419 |
UnsafeWrapper("Unsafe_SetNativeAddress");
|
|
420 |
void* p = addr_from_java(addr);
|
|
421 |
*(void**)p = addr_from_java(x);
|
|
422 |
UNSAFE_END
|
|
423 |
|
|
424 |
|
|
425 |
////// Allocation requests
|
|
426 |
|
|
427 |
UNSAFE_ENTRY(jobject, Unsafe_AllocateInstance(JNIEnv *env, jobject unsafe, jclass cls))
|
|
428 |
UnsafeWrapper("Unsafe_AllocateInstance");
|
|
429 |
{
|
|
430 |
ThreadToNativeFromVM ttnfv(thread);
|
|
431 |
return env->AllocObject(cls);
|
|
432 |
}
|
|
433 |
UNSAFE_END
|
|
434 |
|
|
435 |
UNSAFE_ENTRY(jlong, Unsafe_AllocateMemory(JNIEnv *env, jobject unsafe, jlong size))
|
|
436 |
UnsafeWrapper("Unsafe_AllocateMemory");
|
|
437 |
size_t sz = (size_t)size;
|
|
438 |
if (sz != (julong)size || size < 0) {
|
|
439 |
THROW_0(vmSymbols::java_lang_IllegalArgumentException());
|
|
440 |
}
|
|
441 |
if (sz == 0) {
|
|
442 |
return 0;
|
|
443 |
}
|
|
444 |
sz = round_to(sz, HeapWordSize);
|
|
445 |
void* x = os::malloc(sz);
|
|
446 |
if (x == NULL) {
|
|
447 |
THROW_0(vmSymbols::java_lang_OutOfMemoryError());
|
|
448 |
}
|
|
449 |
//Copy::fill_to_words((HeapWord*)x, sz / HeapWordSize);
|
|
450 |
return addr_to_java(x);
|
|
451 |
UNSAFE_END
|
|
452 |
|
|
453 |
UNSAFE_ENTRY(jlong, Unsafe_ReallocateMemory(JNIEnv *env, jobject unsafe, jlong addr, jlong size))
|
|
454 |
UnsafeWrapper("Unsafe_ReallocateMemory");
|
|
455 |
void* p = addr_from_java(addr);
|
|
456 |
size_t sz = (size_t)size;
|
|
457 |
if (sz != (julong)size || size < 0) {
|
|
458 |
THROW_0(vmSymbols::java_lang_IllegalArgumentException());
|
|
459 |
}
|
|
460 |
if (sz == 0) {
|
|
461 |
os::free(p);
|
|
462 |
return 0;
|
|
463 |
}
|
|
464 |
sz = round_to(sz, HeapWordSize);
|
|
465 |
void* x = (p == NULL) ? os::malloc(sz) : os::realloc(p, sz);
|
|
466 |
if (x == NULL) {
|
|
467 |
THROW_0(vmSymbols::java_lang_OutOfMemoryError());
|
|
468 |
}
|
|
469 |
return addr_to_java(x);
|
|
470 |
UNSAFE_END
|
|
471 |
|
|
472 |
UNSAFE_ENTRY(void, Unsafe_FreeMemory(JNIEnv *env, jobject unsafe, jlong addr))
|
|
473 |
UnsafeWrapper("Unsafe_FreeMemory");
|
|
474 |
void* p = addr_from_java(addr);
|
|
475 |
if (p == NULL) {
|
|
476 |
return;
|
|
477 |
}
|
|
478 |
os::free(p);
|
|
479 |
UNSAFE_END
|
|
480 |
|
|
481 |
UNSAFE_ENTRY(void, Unsafe_SetMemory(JNIEnv *env, jobject unsafe, jlong addr, jlong size, jbyte value))
|
|
482 |
UnsafeWrapper("Unsafe_SetMemory");
|
|
483 |
size_t sz = (size_t)size;
|
|
484 |
if (sz != (julong)size || size < 0) {
|
|
485 |
THROW(vmSymbols::java_lang_IllegalArgumentException());
|
|
486 |
}
|
|
487 |
char* p = (char*) addr_from_java(addr);
|
|
488 |
Copy::fill_to_memory_atomic(p, sz, value);
|
|
489 |
UNSAFE_END
|
|
490 |
|
|
491 |
UNSAFE_ENTRY(void, Unsafe_SetMemory2(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jlong size, jbyte value))
|
|
492 |
UnsafeWrapper("Unsafe_SetMemory");
|
|
493 |
size_t sz = (size_t)size;
|
|
494 |
if (sz != (julong)size || size < 0) {
|
|
495 |
THROW(vmSymbols::java_lang_IllegalArgumentException());
|
|
496 |
}
|
|
497 |
oop base = JNIHandles::resolve(obj);
|
|
498 |
void* p = index_oop_from_field_offset_long(base, offset);
|
|
499 |
Copy::fill_to_memory_atomic(p, sz, value);
|
|
500 |
UNSAFE_END
|
|
501 |
|
|
502 |
UNSAFE_ENTRY(void, Unsafe_CopyMemory(JNIEnv *env, jobject unsafe, jlong srcAddr, jlong dstAddr, jlong size))
|
|
503 |
UnsafeWrapper("Unsafe_CopyMemory");
|
|
504 |
if (size == 0) {
|
|
505 |
return;
|
|
506 |
}
|
|
507 |
size_t sz = (size_t)size;
|
|
508 |
if (sz != (julong)size || size < 0) {
|
|
509 |
THROW(vmSymbols::java_lang_IllegalArgumentException());
|
|
510 |
}
|
|
511 |
void* src = addr_from_java(srcAddr);
|
|
512 |
void* dst = addr_from_java(dstAddr);
|
|
513 |
Copy::conjoint_memory_atomic(src, dst, sz);
|
|
514 |
UNSAFE_END
|
|
515 |
|
|
516 |
UNSAFE_ENTRY(void, Unsafe_CopyMemory2(JNIEnv *env, jobject unsafe, jobject srcObj, jlong srcOffset, jobject dstObj, jlong dstOffset, jlong size))
|
|
517 |
UnsafeWrapper("Unsafe_CopyMemory");
|
|
518 |
if (size == 0) {
|
|
519 |
return;
|
|
520 |
}
|
|
521 |
size_t sz = (size_t)size;
|
|
522 |
if (sz != (julong)size || size < 0) {
|
|
523 |
THROW(vmSymbols::java_lang_IllegalArgumentException());
|
|
524 |
}
|
|
525 |
oop srcp = JNIHandles::resolve(srcObj);
|
|
526 |
oop dstp = JNIHandles::resolve(dstObj);
|
|
527 |
if (dstp != NULL && !dstp->is_typeArray()) {
|
|
528 |
// NYI: This works only for non-oop arrays at present.
|
|
529 |
// Generalizing it would be reasonable, but requires card marking.
|
|
530 |
// Also, autoboxing a Long from 0L in copyMemory(x,y, 0L,z, n) would be bad.
|
|
531 |
THROW(vmSymbols::java_lang_IllegalArgumentException());
|
|
532 |
}
|
|
533 |
void* src = index_oop_from_field_offset_long(srcp, srcOffset);
|
|
534 |
void* dst = index_oop_from_field_offset_long(dstp, dstOffset);
|
|
535 |
Copy::conjoint_memory_atomic(src, dst, sz);
|
|
536 |
UNSAFE_END
|
|
537 |
|
|
538 |
|
|
539 |
////// Random queries
|
|
540 |
|
|
541 |
// See comment at file start about UNSAFE_LEAF
|
|
542 |
//UNSAFE_LEAF(jint, Unsafe_AddressSize())
|
|
543 |
UNSAFE_ENTRY(jint, Unsafe_AddressSize(JNIEnv *env, jobject unsafe))
|
|
544 |
UnsafeWrapper("Unsafe_AddressSize");
|
|
545 |
return sizeof(void*);
|
|
546 |
UNSAFE_END
|
|
547 |
|
|
548 |
// See comment at file start about UNSAFE_LEAF
|
|
549 |
//UNSAFE_LEAF(jint, Unsafe_PageSize())
|
|
550 |
UNSAFE_ENTRY(jint, Unsafe_PageSize(JNIEnv *env, jobject unsafe))
|
|
551 |
UnsafeWrapper("Unsafe_PageSize");
|
|
552 |
return os::vm_page_size();
|
|
553 |
UNSAFE_END
|
|
554 |
|
|
555 |
jint find_field_offset(jobject field, int must_be_static, TRAPS) {
|
|
556 |
if (field == NULL) {
|
|
557 |
THROW_0(vmSymbols::java_lang_NullPointerException());
|
|
558 |
}
|
|
559 |
|
|
560 |
oop reflected = JNIHandles::resolve_non_null(field);
|
|
561 |
oop mirror = java_lang_reflect_Field::clazz(reflected);
|
|
562 |
klassOop k = java_lang_Class::as_klassOop(mirror);
|
|
563 |
int slot = java_lang_reflect_Field::slot(reflected);
|
|
564 |
int modifiers = java_lang_reflect_Field::modifiers(reflected);
|
|
565 |
|
|
566 |
if (must_be_static >= 0) {
|
|
567 |
int really_is_static = ((modifiers & JVM_ACC_STATIC) != 0);
|
|
568 |
if (must_be_static != really_is_static) {
|
|
569 |
THROW_0(vmSymbols::java_lang_IllegalArgumentException());
|
|
570 |
}
|
|
571 |
}
|
|
572 |
|
|
573 |
int offset = instanceKlass::cast(k)->offset_from_fields(slot);
|
|
574 |
return field_offset_from_byte_offset(offset);
|
|
575 |
}
|
|
576 |
|
|
577 |
UNSAFE_ENTRY(jlong, Unsafe_ObjectFieldOffset(JNIEnv *env, jobject unsafe, jobject field))
|
|
578 |
UnsafeWrapper("Unsafe_ObjectFieldOffset");
|
|
579 |
return find_field_offset(field, 0, THREAD);
|
|
580 |
UNSAFE_END
|
|
581 |
|
|
582 |
UNSAFE_ENTRY(jlong, Unsafe_StaticFieldOffset(JNIEnv *env, jobject unsafe, jobject field))
|
|
583 |
UnsafeWrapper("Unsafe_StaticFieldOffset");
|
|
584 |
return find_field_offset(field, 1, THREAD);
|
|
585 |
UNSAFE_END
|
|
586 |
|
|
587 |
UNSAFE_ENTRY(jobject, Unsafe_StaticFieldBaseFromField(JNIEnv *env, jobject unsafe, jobject field))
|
|
588 |
UnsafeWrapper("Unsafe_StaticFieldBase");
|
|
589 |
// Note: In this VM implementation, a field address is always a short
|
|
590 |
// offset from the base of a a klass metaobject. Thus, the full dynamic
|
|
591 |
// range of the return type is never used. However, some implementations
|
|
592 |
// might put the static field inside an array shared by many classes,
|
|
593 |
// or even at a fixed address, in which case the address could be quite
|
|
594 |
// large. In that last case, this function would return NULL, since
|
|
595 |
// the address would operate alone, without any base pointer.
|
|
596 |
|
|
597 |
if (field == NULL) THROW_0(vmSymbols::java_lang_NullPointerException());
|
|
598 |
|
|
599 |
oop reflected = JNIHandles::resolve_non_null(field);
|
|
600 |
oop mirror = java_lang_reflect_Field::clazz(reflected);
|
|
601 |
int modifiers = java_lang_reflect_Field::modifiers(reflected);
|
|
602 |
|
|
603 |
if ((modifiers & JVM_ACC_STATIC) == 0) {
|
|
604 |
THROW_0(vmSymbols::java_lang_IllegalArgumentException());
|
|
605 |
}
|
|
606 |
|
|
607 |
return JNIHandles::make_local(env, java_lang_Class::as_klassOop(mirror));
|
|
608 |
UNSAFE_END
|
|
609 |
|
|
610 |
//@deprecated
|
|
611 |
UNSAFE_ENTRY(jint, Unsafe_FieldOffset(JNIEnv *env, jobject unsafe, jobject field))
|
|
612 |
UnsafeWrapper("Unsafe_FieldOffset");
|
|
613 |
// tries (but fails) to be polymorphic between static and non-static:
|
|
614 |
jlong offset = find_field_offset(field, -1, THREAD);
|
|
615 |
guarantee(offset == (jint)offset, "offset fits in 32 bits");
|
|
616 |
return (jint)offset;
|
|
617 |
UNSAFE_END
|
|
618 |
|
|
619 |
//@deprecated
|
|
620 |
UNSAFE_ENTRY(jobject, Unsafe_StaticFieldBaseFromClass(JNIEnv *env, jobject unsafe, jobject clazz))
|
|
621 |
UnsafeWrapper("Unsafe_StaticFieldBase");
|
|
622 |
if (clazz == NULL) {
|
|
623 |
THROW_0(vmSymbols::java_lang_NullPointerException());
|
|
624 |
}
|
|
625 |
return JNIHandles::make_local(env, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
|
|
626 |
UNSAFE_END
|
|
627 |
|
|
628 |
UNSAFE_ENTRY(void, Unsafe_EnsureClassInitialized(JNIEnv *env, jobject unsafe, jobject clazz))
|
|
629 |
UnsafeWrapper("Unsafe_EnsureClassInitialized");
|
|
630 |
if (clazz == NULL) {
|
|
631 |
THROW(vmSymbols::java_lang_NullPointerException());
|
|
632 |
}
|
|
633 |
oop mirror = JNIHandles::resolve_non_null(clazz);
|
|
634 |
instanceKlass* k = instanceKlass::cast(java_lang_Class::as_klassOop(mirror));
|
|
635 |
if (k != NULL) {
|
|
636 |
k->initialize(CHECK);
|
|
637 |
}
|
|
638 |
UNSAFE_END
|
|
639 |
|
|
640 |
static void getBaseAndScale(int& base, int& scale, jclass acls, TRAPS) {
|
|
641 |
if (acls == NULL) {
|
|
642 |
THROW(vmSymbols::java_lang_NullPointerException());
|
|
643 |
}
|
|
644 |
oop mirror = JNIHandles::resolve_non_null(acls);
|
|
645 |
klassOop k = java_lang_Class::as_klassOop(mirror);
|
|
646 |
if (k == NULL || !k->klass_part()->oop_is_array()) {
|
|
647 |
THROW(vmSymbols::java_lang_InvalidClassException());
|
|
648 |
} else if (k->klass_part()->oop_is_objArray()) {
|
|
649 |
base = arrayOopDesc::base_offset_in_bytes(T_OBJECT);
|
|
650 |
scale = oopSize;
|
|
651 |
} else if (k->klass_part()->oop_is_typeArray()) {
|
|
652 |
typeArrayKlass* tak = typeArrayKlass::cast(k);
|
|
653 |
base = tak->array_header_in_bytes();
|
|
654 |
assert(base == arrayOopDesc::base_offset_in_bytes(tak->element_type()), "array_header_size semantics ok");
|
|
655 |
scale = (1 << tak->log2_element_size());
|
|
656 |
} else {
|
|
657 |
ShouldNotReachHere();
|
|
658 |
}
|
|
659 |
}
|
|
660 |
|
|
661 |
UNSAFE_ENTRY(jint, Unsafe_ArrayBaseOffset(JNIEnv *env, jobject unsafe, jclass acls))
|
|
662 |
UnsafeWrapper("Unsafe_ArrayBaseOffset");
|
|
663 |
int base, scale;
|
|
664 |
getBaseAndScale(base, scale, acls, CHECK_0);
|
|
665 |
return field_offset_from_byte_offset(base);
|
|
666 |
UNSAFE_END
|
|
667 |
|
|
668 |
|
|
669 |
UNSAFE_ENTRY(jint, Unsafe_ArrayIndexScale(JNIEnv *env, jobject unsafe, jclass acls))
|
|
670 |
UnsafeWrapper("Unsafe_ArrayIndexScale");
|
|
671 |
int base, scale;
|
|
672 |
getBaseAndScale(base, scale, acls, CHECK_0);
|
|
673 |
// This VM packs both fields and array elements down to the byte.
|
|
674 |
// But watch out: If this changes, so that array references for
|
|
675 |
// a given primitive type (say, T_BOOLEAN) use different memory units
|
|
676 |
// than fields, this method MUST return zero for such arrays.
|
|
677 |
// For example, the VM used to store sub-word sized fields in full
|
|
678 |
// words in the object layout, so that accessors like getByte(Object,int)
|
|
679 |
// did not really do what one might expect for arrays. Therefore,
|
|
680 |
// this function used to report a zero scale factor, so that the user
|
|
681 |
// would know not to attempt to access sub-word array elements.
|
|
682 |
// // Code for unpacked fields:
|
|
683 |
// if (scale < wordSize) return 0;
|
|
684 |
|
|
685 |
// The following allows for a pretty general fieldOffset cookie scheme,
|
|
686 |
// but requires it to be linear in byte offset.
|
|
687 |
return field_offset_from_byte_offset(scale) - field_offset_from_byte_offset(0);
|
|
688 |
UNSAFE_END
|
|
689 |
|
|
690 |
|
|
691 |
static inline void throw_new(JNIEnv *env, const char *ename) {
|
|
692 |
char buf[100];
|
|
693 |
strcpy(buf, "java/lang/");
|
|
694 |
strcat(buf, ename);
|
|
695 |
jclass cls = env->FindClass(buf);
|
|
696 |
char* msg = NULL;
|
|
697 |
env->ThrowNew(cls, msg);
|
|
698 |
}
|
|
699 |
|
|
700 |
static jclass Unsafe_DefineClass(JNIEnv *env, jstring name, jbyteArray data, int offset, int length, jobject loader, jobject pd) {
|
|
701 |
{
|
|
702 |
// Code lifted from JDK 1.3 ClassLoader.c
|
|
703 |
|
|
704 |
jbyte *body;
|
|
705 |
char *utfName;
|
|
706 |
jclass result = 0;
|
|
707 |
char buf[128];
|
|
708 |
|
|
709 |
if (UsePerfData) {
|
|
710 |
ClassLoader::unsafe_defineClassCallCounter()->inc();
|
|
711 |
}
|
|
712 |
|
|
713 |
if (data == NULL) {
|
|
714 |
throw_new(env, "NullPointerException");
|
|
715 |
return 0;
|
|
716 |
}
|
|
717 |
|
|
718 |
/* Work around 4153825. malloc crashes on Solaris when passed a
|
|
719 |
* negative size.
|
|
720 |
*/
|
|
721 |
if (length < 0) {
|
|
722 |
throw_new(env, "ArrayIndexOutOfBoundsException");
|
|
723 |
return 0;
|
|
724 |
}
|
|
725 |
|
|
726 |
body = NEW_C_HEAP_ARRAY(jbyte, length);
|
|
727 |
|
|
728 |
if (body == 0) {
|
|
729 |
throw_new(env, "OutOfMemoryError");
|
|
730 |
return 0;
|
|
731 |
}
|
|
732 |
|
|
733 |
env->GetByteArrayRegion(data, offset, length, body);
|
|
734 |
|
|
735 |
if (env->ExceptionOccurred())
|
|
736 |
goto free_body;
|
|
737 |
|
|
738 |
if (name != NULL) {
|
|
739 |
uint len = env->GetStringUTFLength(name);
|
|
740 |
int unicode_len = env->GetStringLength(name);
|
|
741 |
if (len >= sizeof(buf)) {
|
|
742 |
utfName = NEW_C_HEAP_ARRAY(char, len + 1);
|
|
743 |
if (utfName == NULL) {
|
|
744 |
throw_new(env, "OutOfMemoryError");
|
|
745 |
goto free_body;
|
|
746 |
}
|
|
747 |
} else {
|
|
748 |
utfName = buf;
|
|
749 |
}
|
|
750 |
env->GetStringUTFRegion(name, 0, unicode_len, utfName);
|
|
751 |
//VerifyFixClassname(utfName);
|
|
752 |
for (uint i = 0; i < len; i++) {
|
|
753 |
if (utfName[i] == '.') utfName[i] = '/';
|
|
754 |
}
|
|
755 |
} else {
|
|
756 |
utfName = NULL;
|
|
757 |
}
|
|
758 |
|
|
759 |
result = JVM_DefineClass(env, utfName, loader, body, length, pd);
|
|
760 |
|
|
761 |
if (utfName && utfName != buf)
|
|
762 |
FREE_C_HEAP_ARRAY(char, utfName);
|
|
763 |
|
|
764 |
free_body:
|
|
765 |
FREE_C_HEAP_ARRAY(jbyte, body);
|
|
766 |
return result;
|
|
767 |
}
|
|
768 |
}
|
|
769 |
|
|
770 |
|
|
771 |
UNSAFE_ENTRY(jclass, Unsafe_DefineClass0(JNIEnv *env, jobject unsafe, jstring name, jbyteArray data, int offset, int length))
|
|
772 |
UnsafeWrapper("Unsafe_DefineClass");
|
|
773 |
{
|
|
774 |
ThreadToNativeFromVM ttnfv(thread);
|
|
775 |
|
|
776 |
int depthFromDefineClass0 = 1;
|
|
777 |
jclass caller = JVM_GetCallerClass(env, depthFromDefineClass0);
|
|
778 |
jobject loader = (caller == NULL) ? NULL : JVM_GetClassLoader(env, caller);
|
|
779 |
jobject pd = (caller == NULL) ? NULL : JVM_GetProtectionDomain(env, caller);
|
|
780 |
|
|
781 |
return Unsafe_DefineClass(env, name, data, offset, length, loader, pd);
|
|
782 |
}
|
|
783 |
UNSAFE_END
|
|
784 |
|
|
785 |
|
|
786 |
UNSAFE_ENTRY(jclass, Unsafe_DefineClass1(JNIEnv *env, jobject unsafe, jstring name, jbyteArray data, int offset, int length, jobject loader, jobject pd))
|
|
787 |
UnsafeWrapper("Unsafe_DefineClass");
|
|
788 |
{
|
|
789 |
ThreadToNativeFromVM ttnfv(thread);
|
|
790 |
|
|
791 |
return Unsafe_DefineClass(env, name, data, offset, length, loader, pd);
|
|
792 |
}
|
|
793 |
UNSAFE_END
|
|
794 |
|
|
795 |
|
|
796 |
UNSAFE_ENTRY(void, Unsafe_MonitorEnter(JNIEnv *env, jobject unsafe, jobject jobj))
|
|
797 |
UnsafeWrapper("Unsafe_MonitorEnter");
|
|
798 |
{
|
|
799 |
if (jobj == NULL) {
|
|
800 |
THROW(vmSymbols::java_lang_NullPointerException());
|
|
801 |
}
|
|
802 |
Handle obj(thread, JNIHandles::resolve_non_null(jobj));
|
|
803 |
ObjectSynchronizer::jni_enter(obj, CHECK);
|
|
804 |
}
|
|
805 |
UNSAFE_END
|
|
806 |
|
|
807 |
|
|
808 |
UNSAFE_ENTRY(jboolean, Unsafe_TryMonitorEnter(JNIEnv *env, jobject unsafe, jobject jobj))
|
|
809 |
UnsafeWrapper("Unsafe_TryMonitorEnter");
|
|
810 |
{
|
|
811 |
if (jobj == NULL) {
|
|
812 |
THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE);
|
|
813 |
}
|
|
814 |
Handle obj(thread, JNIHandles::resolve_non_null(jobj));
|
|
815 |
bool res = ObjectSynchronizer::jni_try_enter(obj, CHECK_0);
|
|
816 |
return (res ? JNI_TRUE : JNI_FALSE);
|
|
817 |
}
|
|
818 |
UNSAFE_END
|
|
819 |
|
|
820 |
|
|
821 |
UNSAFE_ENTRY(void, Unsafe_MonitorExit(JNIEnv *env, jobject unsafe, jobject jobj))
|
|
822 |
UnsafeWrapper("Unsafe_MonitorExit");
|
|
823 |
{
|
|
824 |
if (jobj == NULL) {
|
|
825 |
THROW(vmSymbols::java_lang_NullPointerException());
|
|
826 |
}
|
|
827 |
Handle obj(THREAD, JNIHandles::resolve_non_null(jobj));
|
|
828 |
ObjectSynchronizer::jni_exit(obj(), CHECK);
|
|
829 |
}
|
|
830 |
UNSAFE_END
|
|
831 |
|
|
832 |
|
|
833 |
UNSAFE_ENTRY(void, Unsafe_ThrowException(JNIEnv *env, jobject unsafe, jthrowable thr))
|
|
834 |
UnsafeWrapper("Unsafe_ThrowException");
|
|
835 |
{
|
|
836 |
ThreadToNativeFromVM ttnfv(thread);
|
|
837 |
env->Throw(thr);
|
|
838 |
}
|
|
839 |
UNSAFE_END
|
|
840 |
|
|
841 |
// JSR166 ------------------------------------------------------------------
|
|
842 |
|
|
843 |
UNSAFE_ENTRY(jboolean, Unsafe_CompareAndSwapObject(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jobject e_h, jobject x_h))
|
|
844 |
UnsafeWrapper("Unsafe_CompareAndSwapObject");
|
|
845 |
oop x = JNIHandles::resolve(x_h);
|
|
846 |
oop e = JNIHandles::resolve(e_h);
|
|
847 |
oop p = JNIHandles::resolve(obj);
|
|
848 |
intptr_t* addr = (intptr_t *)index_oop_from_field_offset_long(p, offset);
|
|
849 |
intptr_t res = Atomic::cmpxchg_ptr((intptr_t)x, addr, (intptr_t)e);
|
|
850 |
jboolean success = (res == (intptr_t)e);
|
|
851 |
if (success)
|
|
852 |
update_barrier_set((oop*)addr, x);
|
|
853 |
return success;
|
|
854 |
UNSAFE_END
|
|
855 |
|
|
856 |
UNSAFE_ENTRY(jboolean, Unsafe_CompareAndSwapInt(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jint e, jint x))
|
|
857 |
UnsafeWrapper("Unsafe_CompareAndSwapInt");
|
|
858 |
oop p = JNIHandles::resolve(obj);
|
|
859 |
jint* addr = (jint *) index_oop_from_field_offset_long(p, offset);
|
|
860 |
return (jint)(Atomic::cmpxchg(x, addr, e)) == e;
|
|
861 |
UNSAFE_END
|
|
862 |
|
|
863 |
UNSAFE_ENTRY(jboolean, Unsafe_CompareAndSwapLong(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jlong e, jlong x))
|
|
864 |
UnsafeWrapper("Unsafe_CompareAndSwapLong");
|
|
865 |
Handle p (THREAD, JNIHandles::resolve(obj));
|
|
866 |
jlong* addr = (jlong*)(index_oop_from_field_offset_long(p(), offset));
|
|
867 |
if (VM_Version::supports_cx8())
|
|
868 |
return (jlong)(Atomic::cmpxchg(x, addr, e)) == e;
|
|
869 |
else {
|
|
870 |
jboolean success = false;
|
|
871 |
ObjectLocker ol(p, THREAD);
|
|
872 |
if (*addr == e) { *addr = x; success = true; }
|
|
873 |
return success;
|
|
874 |
}
|
|
875 |
UNSAFE_END
|
|
876 |
|
|
877 |
UNSAFE_ENTRY(void, Unsafe_Park(JNIEnv *env, jobject unsafe, jboolean isAbsolute, jlong time))
|
|
878 |
UnsafeWrapper("Unsafe_Park");
|
|
879 |
JavaThreadParkedState jtps(thread, time != 0);
|
|
880 |
thread->parker()->park(isAbsolute != 0, time);
|
|
881 |
UNSAFE_END
|
|
882 |
|
|
883 |
UNSAFE_ENTRY(void, Unsafe_Unpark(JNIEnv *env, jobject unsafe, jobject jthread))
|
|
884 |
UnsafeWrapper("Unsafe_Unpark");
|
|
885 |
Parker* p = NULL;
|
|
886 |
if (jthread != NULL) {
|
|
887 |
oop java_thread = JNIHandles::resolve_non_null(jthread);
|
|
888 |
if (java_thread != NULL) {
|
|
889 |
jlong lp = java_lang_Thread::park_event(java_thread);
|
|
890 |
if (lp != 0) {
|
|
891 |
// This cast is OK even though the jlong might have been read
|
|
892 |
// non-atomically on 32bit systems, since there, one word will
|
|
893 |
// always be zero anyway and the value set is always the same
|
|
894 |
p = (Parker*)addr_from_java(lp);
|
|
895 |
} else {
|
|
896 |
// Grab lock if apparently null or using older version of library
|
|
897 |
MutexLocker mu(Threads_lock);
|
|
898 |
java_thread = JNIHandles::resolve_non_null(jthread);
|
|
899 |
if (java_thread != NULL) {
|
|
900 |
JavaThread* thr = java_lang_Thread::thread(java_thread);
|
|
901 |
if (thr != NULL) {
|
|
902 |
p = thr->parker();
|
|
903 |
if (p != NULL) { // Bind to Java thread for next time.
|
|
904 |
java_lang_Thread::set_park_event(java_thread, addr_to_java(p));
|
|
905 |
}
|
|
906 |
}
|
|
907 |
}
|
|
908 |
}
|
|
909 |
}
|
|
910 |
}
|
|
911 |
if (p != NULL) {
|
|
912 |
p->unpark();
|
|
913 |
}
|
|
914 |
UNSAFE_END
|
|
915 |
|
|
916 |
UNSAFE_ENTRY(jint, Unsafe_Loadavg(JNIEnv *env, jobject unsafe, jdoubleArray loadavg, jint nelem))
|
|
917 |
UnsafeWrapper("Unsafe_Loadavg");
|
|
918 |
const int max_nelem = 3;
|
|
919 |
double la[max_nelem];
|
|
920 |
jint ret;
|
|
921 |
|
|
922 |
typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(loadavg));
|
|
923 |
assert(a->is_typeArray(), "must be type array");
|
|
924 |
|
|
925 |
if (nelem < 0 || nelem > max_nelem || a->length() < nelem) {
|
|
926 |
ThreadToNativeFromVM ttnfv(thread);
|
|
927 |
throw_new(env, "ArrayIndexOutOfBoundsException");
|
|
928 |
return -1;
|
|
929 |
}
|
|
930 |
|
|
931 |
ret = os::loadavg(la, nelem);
|
|
932 |
if (ret == -1) return -1;
|
|
933 |
|
|
934 |
// if successful, ret is the number of samples actually retrieved.
|
|
935 |
assert(ret >= 0 && ret <= max_nelem, "Unexpected loadavg return value");
|
|
936 |
switch(ret) {
|
|
937 |
case 3: a->double_at_put(2, (jdouble)la[2]); // fall through
|
|
938 |
case 2: a->double_at_put(1, (jdouble)la[1]); // fall through
|
|
939 |
case 1: a->double_at_put(0, (jdouble)la[0]); break;
|
|
940 |
}
|
|
941 |
return ret;
|
|
942 |
UNSAFE_END
|
|
943 |
|
|
944 |
UNSAFE_ENTRY(void, Unsafe_PrefetchRead(JNIEnv* env, jclass ignored, jobject obj, jlong offset))
|
|
945 |
UnsafeWrapper("Unsafe_PrefetchRead");
|
|
946 |
oop p = JNIHandles::resolve(obj);
|
|
947 |
void* addr = index_oop_from_field_offset_long(p, 0);
|
|
948 |
Prefetch::read(addr, (intx)offset);
|
|
949 |
UNSAFE_END
|
|
950 |
|
|
951 |
UNSAFE_ENTRY(void, Unsafe_PrefetchWrite(JNIEnv* env, jclass ignored, jobject obj, jlong offset))
|
|
952 |
UnsafeWrapper("Unsafe_PrefetchWrite");
|
|
953 |
oop p = JNIHandles::resolve(obj);
|
|
954 |
void* addr = index_oop_from_field_offset_long(p, 0);
|
|
955 |
Prefetch::write(addr, (intx)offset);
|
|
956 |
UNSAFE_END
|
|
957 |
|
|
958 |
|
|
959 |
/// JVM_RegisterUnsafeMethods
|
|
960 |
|
|
961 |
#define ADR "J"
|
|
962 |
|
|
963 |
#define LANG "Ljava/lang/"
|
|
964 |
|
|
965 |
#define OBJ LANG"Object;"
|
|
966 |
#define CLS LANG"Class;"
|
|
967 |
#define CTR LANG"reflect/Constructor;"
|
|
968 |
#define FLD LANG"reflect/Field;"
|
|
969 |
#define MTH LANG"reflect/Method;"
|
|
970 |
#define THR LANG"Throwable;"
|
|
971 |
|
|
972 |
#define DC0_Args LANG"String;[BII"
|
|
973 |
#define DC1_Args DC0_Args LANG"ClassLoader;" "Ljava/security/ProtectionDomain;"
|
|
974 |
|
|
975 |
#define CC (char*) /*cast a literal from (const char*)*/
|
|
976 |
#define FN_PTR(f) CAST_FROM_FN_PTR(void*, &f)
|
|
977 |
|
|
978 |
// define deprecated accessors for compabitility with 1.4.0
|
|
979 |
#define DECLARE_GETSETOOP_140(Boolean, Z) \
|
|
980 |
{CC"get"#Boolean, CC"("OBJ"I)"#Z, FN_PTR(Unsafe_Get##Boolean##140)}, \
|
|
981 |
{CC"put"#Boolean, CC"("OBJ"I"#Z")V", FN_PTR(Unsafe_Set##Boolean##140)}
|
|
982 |
|
|
983 |
// Note: In 1.4.1, getObject and kin take both int and long offsets.
|
|
984 |
#define DECLARE_GETSETOOP_141(Boolean, Z) \
|
|
985 |
{CC"get"#Boolean, CC"("OBJ"J)"#Z, FN_PTR(Unsafe_Get##Boolean)}, \
|
|
986 |
{CC"put"#Boolean, CC"("OBJ"J"#Z")V", FN_PTR(Unsafe_Set##Boolean)}
|
|
987 |
|
|
988 |
// Note: In 1.5.0, there are volatile versions too
|
|
989 |
#define DECLARE_GETSETOOP(Boolean, Z) \
|
|
990 |
{CC"get"#Boolean, CC"("OBJ"J)"#Z, FN_PTR(Unsafe_Get##Boolean)}, \
|
|
991 |
{CC"put"#Boolean, CC"("OBJ"J"#Z")V", FN_PTR(Unsafe_Set##Boolean)}, \
|
|
992 |
{CC"get"#Boolean"Volatile", CC"("OBJ"J)"#Z, FN_PTR(Unsafe_Get##Boolean##Volatile)}, \
|
|
993 |
{CC"put"#Boolean"Volatile", CC"("OBJ"J"#Z")V", FN_PTR(Unsafe_Set##Boolean##Volatile)}
|
|
994 |
|
|
995 |
|
|
996 |
#define DECLARE_GETSETNATIVE(Byte, B) \
|
|
997 |
{CC"get"#Byte, CC"("ADR")"#B, FN_PTR(Unsafe_GetNative##Byte)}, \
|
|
998 |
{CC"put"#Byte, CC"("ADR#B")V", FN_PTR(Unsafe_SetNative##Byte)}
|
|
999 |
|
|
1000 |
|
|
1001 |
|
|
1002 |
// %%% These are temporarily supported until the SDK sources
|
|
1003 |
// contain the necessarily updated Unsafe.java.
|
|
1004 |
static JNINativeMethod methods_140[] = {
|
|
1005 |
|
|
1006 |
{CC"getObject", CC"("OBJ"I)"OBJ"", FN_PTR(Unsafe_GetObject140)},
|
|
1007 |
{CC"putObject", CC"("OBJ"I"OBJ")V", FN_PTR(Unsafe_SetObject140)},
|
|
1008 |
|
|
1009 |
DECLARE_GETSETOOP_140(Boolean, Z),
|
|
1010 |
DECLARE_GETSETOOP_140(Byte, B),
|
|
1011 |
DECLARE_GETSETOOP_140(Short, S),
|
|
1012 |
DECLARE_GETSETOOP_140(Char, C),
|
|
1013 |
DECLARE_GETSETOOP_140(Int, I),
|
|
1014 |
DECLARE_GETSETOOP_140(Long, J),
|
|
1015 |
DECLARE_GETSETOOP_140(Float, F),
|
|
1016 |
DECLARE_GETSETOOP_140(Double, D),
|
|
1017 |
|
|
1018 |
DECLARE_GETSETNATIVE(Byte, B),
|
|
1019 |
DECLARE_GETSETNATIVE(Short, S),
|
|
1020 |
DECLARE_GETSETNATIVE(Char, C),
|
|
1021 |
DECLARE_GETSETNATIVE(Int, I),
|
|
1022 |
DECLARE_GETSETNATIVE(Long, J),
|
|
1023 |
DECLARE_GETSETNATIVE(Float, F),
|
|
1024 |
DECLARE_GETSETNATIVE(Double, D),
|
|
1025 |
|
|
1026 |
{CC"getAddress", CC"("ADR")"ADR, FN_PTR(Unsafe_GetNativeAddress)},
|
|
1027 |
{CC"putAddress", CC"("ADR""ADR")V", FN_PTR(Unsafe_SetNativeAddress)},
|
|
1028 |
|
|
1029 |
{CC"allocateMemory", CC"(J)"ADR, FN_PTR(Unsafe_AllocateMemory)},
|
|
1030 |
{CC"reallocateMemory", CC"("ADR"J)"ADR, FN_PTR(Unsafe_ReallocateMemory)},
|
|
1031 |
// {CC"setMemory", CC"("ADR"JB)V", FN_PTR(Unsafe_SetMemory)},
|
|
1032 |
// {CC"copyMemory", CC"("ADR ADR"J)V", FN_PTR(Unsafe_CopyMemory)},
|
|
1033 |
{CC"freeMemory", CC"("ADR")V", FN_PTR(Unsafe_FreeMemory)},
|
|
1034 |
|
|
1035 |
{CC"fieldOffset", CC"("FLD")I", FN_PTR(Unsafe_FieldOffset)}, //deprecated
|
|
1036 |
{CC"staticFieldBase", CC"("CLS")"OBJ, FN_PTR(Unsafe_StaticFieldBaseFromClass)}, //deprecated
|
|
1037 |
{CC"ensureClassInitialized",CC"("CLS")V", FN_PTR(Unsafe_EnsureClassInitialized)},
|
|
1038 |
{CC"arrayBaseOffset", CC"("CLS")I", FN_PTR(Unsafe_ArrayBaseOffset)},
|
|
1039 |
{CC"arrayIndexScale", CC"("CLS")I", FN_PTR(Unsafe_ArrayIndexScale)},
|
|
1040 |
{CC"addressSize", CC"()I", FN_PTR(Unsafe_AddressSize)},
|
|
1041 |
{CC"pageSize", CC"()I", FN_PTR(Unsafe_PageSize)},
|
|
1042 |
|
|
1043 |
{CC"defineClass", CC"("DC0_Args")"CLS, FN_PTR(Unsafe_DefineClass0)},
|
|
1044 |
{CC"defineClass", CC"("DC1_Args")"CLS, FN_PTR(Unsafe_DefineClass1)},
|
|
1045 |
{CC"allocateInstance", CC"("CLS")"OBJ, FN_PTR(Unsafe_AllocateInstance)},
|
|
1046 |
{CC"monitorEnter", CC"("OBJ")V", FN_PTR(Unsafe_MonitorEnter)},
|
|
1047 |
{CC"monitorExit", CC"("OBJ")V", FN_PTR(Unsafe_MonitorExit)},
|
|
1048 |
{CC"throwException", CC"("THR")V", FN_PTR(Unsafe_ThrowException)}
|
|
1049 |
};
|
|
1050 |
|
|
1051 |
// These are the old methods prior to the JSR 166 changes in 1.5.0
|
|
1052 |
static JNINativeMethod methods_141[] = {
|
|
1053 |
|
|
1054 |
{CC"getObject", CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObject)},
|
|
1055 |
{CC"putObject", CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObject)},
|
|
1056 |
|
|
1057 |
DECLARE_GETSETOOP_141(Boolean, Z),
|
|
1058 |
DECLARE_GETSETOOP_141(Byte, B),
|
|
1059 |
DECLARE_GETSETOOP_141(Short, S),
|
|
1060 |
DECLARE_GETSETOOP_141(Char, C),
|
|
1061 |
DECLARE_GETSETOOP_141(Int, I),
|
|
1062 |
DECLARE_GETSETOOP_141(Long, J),
|
|
1063 |
DECLARE_GETSETOOP_141(Float, F),
|
|
1064 |
DECLARE_GETSETOOP_141(Double, D),
|
|
1065 |
|
|
1066 |
DECLARE_GETSETNATIVE(Byte, B),
|
|
1067 |
DECLARE_GETSETNATIVE(Short, S),
|
|
1068 |
DECLARE_GETSETNATIVE(Char, C),
|
|
1069 |
DECLARE_GETSETNATIVE(Int, I),
|
|
1070 |
DECLARE_GETSETNATIVE(Long, J),
|
|
1071 |
DECLARE_GETSETNATIVE(Float, F),
|
|
1072 |
DECLARE_GETSETNATIVE(Double, D),
|
|
1073 |
|
|
1074 |
{CC"getAddress", CC"("ADR")"ADR, FN_PTR(Unsafe_GetNativeAddress)},
|
|
1075 |
{CC"putAddress", CC"("ADR""ADR")V", FN_PTR(Unsafe_SetNativeAddress)},
|
|
1076 |
|
|
1077 |
{CC"allocateMemory", CC"(J)"ADR, FN_PTR(Unsafe_AllocateMemory)},
|
|
1078 |
{CC"reallocateMemory", CC"("ADR"J)"ADR, FN_PTR(Unsafe_ReallocateMemory)},
|
|
1079 |
// {CC"setMemory", CC"("ADR"JB)V", FN_PTR(Unsafe_SetMemory)},
|
|
1080 |
// {CC"copyMemory", CC"("ADR ADR"J)V", FN_PTR(Unsafe_CopyMemory)},
|
|
1081 |
{CC"freeMemory", CC"("ADR")V", FN_PTR(Unsafe_FreeMemory)},
|
|
1082 |
|
|
1083 |
{CC"objectFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_ObjectFieldOffset)},
|
|
1084 |
{CC"staticFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_StaticFieldOffset)},
|
|
1085 |
{CC"staticFieldBase", CC"("FLD")"OBJ, FN_PTR(Unsafe_StaticFieldBaseFromField)},
|
|
1086 |
{CC"ensureClassInitialized",CC"("CLS")V", FN_PTR(Unsafe_EnsureClassInitialized)},
|
|
1087 |
{CC"arrayBaseOffset", CC"("CLS")I", FN_PTR(Unsafe_ArrayBaseOffset)},
|
|
1088 |
{CC"arrayIndexScale", CC"("CLS")I", FN_PTR(Unsafe_ArrayIndexScale)},
|
|
1089 |
{CC"addressSize", CC"()I", FN_PTR(Unsafe_AddressSize)},
|
|
1090 |
{CC"pageSize", CC"()I", FN_PTR(Unsafe_PageSize)},
|
|
1091 |
|
|
1092 |
{CC"defineClass", CC"("DC0_Args")"CLS, FN_PTR(Unsafe_DefineClass0)},
|
|
1093 |
{CC"defineClass", CC"("DC1_Args")"CLS, FN_PTR(Unsafe_DefineClass1)},
|
|
1094 |
{CC"allocateInstance", CC"("CLS")"OBJ, FN_PTR(Unsafe_AllocateInstance)},
|
|
1095 |
{CC"monitorEnter", CC"("OBJ")V", FN_PTR(Unsafe_MonitorEnter)},
|
|
1096 |
{CC"monitorExit", CC"("OBJ")V", FN_PTR(Unsafe_MonitorExit)},
|
|
1097 |
{CC"throwException", CC"("THR")V", FN_PTR(Unsafe_ThrowException)}
|
|
1098 |
|
|
1099 |
};
|
|
1100 |
|
|
1101 |
// These are the old methods prior to the JSR 166 changes in 1.6.0
|
|
1102 |
static JNINativeMethod methods_15[] = {
|
|
1103 |
|
|
1104 |
{CC"getObject", CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObject)},
|
|
1105 |
{CC"putObject", CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObject)},
|
|
1106 |
{CC"getObjectVolatile",CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObjectVolatile)},
|
|
1107 |
{CC"putObjectVolatile",CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObjectVolatile)},
|
|
1108 |
|
|
1109 |
|
|
1110 |
DECLARE_GETSETOOP(Boolean, Z),
|
|
1111 |
DECLARE_GETSETOOP(Byte, B),
|
|
1112 |
DECLARE_GETSETOOP(Short, S),
|
|
1113 |
DECLARE_GETSETOOP(Char, C),
|
|
1114 |
DECLARE_GETSETOOP(Int, I),
|
|
1115 |
DECLARE_GETSETOOP(Long, J),
|
|
1116 |
DECLARE_GETSETOOP(Float, F),
|
|
1117 |
DECLARE_GETSETOOP(Double, D),
|
|
1118 |
|
|
1119 |
DECLARE_GETSETNATIVE(Byte, B),
|
|
1120 |
DECLARE_GETSETNATIVE(Short, S),
|
|
1121 |
DECLARE_GETSETNATIVE(Char, C),
|
|
1122 |
DECLARE_GETSETNATIVE(Int, I),
|
|
1123 |
DECLARE_GETSETNATIVE(Long, J),
|
|
1124 |
DECLARE_GETSETNATIVE(Float, F),
|
|
1125 |
DECLARE_GETSETNATIVE(Double, D),
|
|
1126 |
|
|
1127 |
{CC"getAddress", CC"("ADR")"ADR, FN_PTR(Unsafe_GetNativeAddress)},
|
|
1128 |
{CC"putAddress", CC"("ADR""ADR")V", FN_PTR(Unsafe_SetNativeAddress)},
|
|
1129 |
|
|
1130 |
{CC"allocateMemory", CC"(J)"ADR, FN_PTR(Unsafe_AllocateMemory)},
|
|
1131 |
{CC"reallocateMemory", CC"("ADR"J)"ADR, FN_PTR(Unsafe_ReallocateMemory)},
|
|
1132 |
// {CC"setMemory", CC"("ADR"JB)V", FN_PTR(Unsafe_SetMemory)},
|
|
1133 |
// {CC"copyMemory", CC"("ADR ADR"J)V", FN_PTR(Unsafe_CopyMemory)},
|
|
1134 |
{CC"freeMemory", CC"("ADR")V", FN_PTR(Unsafe_FreeMemory)},
|
|
1135 |
|
|
1136 |
{CC"objectFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_ObjectFieldOffset)},
|
|
1137 |
{CC"staticFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_StaticFieldOffset)},
|
|
1138 |
{CC"staticFieldBase", CC"("FLD")"OBJ, FN_PTR(Unsafe_StaticFieldBaseFromField)},
|
|
1139 |
{CC"ensureClassInitialized",CC"("CLS")V", FN_PTR(Unsafe_EnsureClassInitialized)},
|
|
1140 |
{CC"arrayBaseOffset", CC"("CLS")I", FN_PTR(Unsafe_ArrayBaseOffset)},
|
|
1141 |
{CC"arrayIndexScale", CC"("CLS")I", FN_PTR(Unsafe_ArrayIndexScale)},
|
|
1142 |
{CC"addressSize", CC"()I", FN_PTR(Unsafe_AddressSize)},
|
|
1143 |
{CC"pageSize", CC"()I", FN_PTR(Unsafe_PageSize)},
|
|
1144 |
|
|
1145 |
{CC"defineClass", CC"("DC0_Args")"CLS, FN_PTR(Unsafe_DefineClass0)},
|
|
1146 |
{CC"defineClass", CC"("DC1_Args")"CLS, FN_PTR(Unsafe_DefineClass1)},
|
|
1147 |
{CC"allocateInstance", CC"("CLS")"OBJ, FN_PTR(Unsafe_AllocateInstance)},
|
|
1148 |
{CC"monitorEnter", CC"("OBJ")V", FN_PTR(Unsafe_MonitorEnter)},
|
|
1149 |
{CC"monitorExit", CC"("OBJ")V", FN_PTR(Unsafe_MonitorExit)},
|
|
1150 |
{CC"throwException", CC"("THR")V", FN_PTR(Unsafe_ThrowException)},
|
|
1151 |
{CC"compareAndSwapObject", CC"("OBJ"J"OBJ""OBJ")Z", FN_PTR(Unsafe_CompareAndSwapObject)},
|
|
1152 |
{CC"compareAndSwapInt", CC"("OBJ"J""I""I"")Z", FN_PTR(Unsafe_CompareAndSwapInt)},
|
|
1153 |
{CC"compareAndSwapLong", CC"("OBJ"J""J""J"")Z", FN_PTR(Unsafe_CompareAndSwapLong)},
|
|
1154 |
{CC"park", CC"(ZJ)V", FN_PTR(Unsafe_Park)},
|
|
1155 |
{CC"unpark", CC"("OBJ")V", FN_PTR(Unsafe_Unpark)}
|
|
1156 |
|
|
1157 |
};
|
|
1158 |
|
|
1159 |
// These are the correct methods, moving forward:
|
|
1160 |
static JNINativeMethod methods[] = {
|
|
1161 |
|
|
1162 |
{CC"getObject", CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObject)},
|
|
1163 |
{CC"putObject", CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObject)},
|
|
1164 |
{CC"getObjectVolatile",CC"("OBJ"J)"OBJ"", FN_PTR(Unsafe_GetObjectVolatile)},
|
|
1165 |
{CC"putObjectVolatile",CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetObjectVolatile)},
|
|
1166 |
|
|
1167 |
|
|
1168 |
DECLARE_GETSETOOP(Boolean, Z),
|
|
1169 |
DECLARE_GETSETOOP(Byte, B),
|
|
1170 |
DECLARE_GETSETOOP(Short, S),
|
|
1171 |
DECLARE_GETSETOOP(Char, C),
|
|
1172 |
DECLARE_GETSETOOP(Int, I),
|
|
1173 |
DECLARE_GETSETOOP(Long, J),
|
|
1174 |
DECLARE_GETSETOOP(Float, F),
|
|
1175 |
DECLARE_GETSETOOP(Double, D),
|
|
1176 |
|
|
1177 |
DECLARE_GETSETNATIVE(Byte, B),
|
|
1178 |
DECLARE_GETSETNATIVE(Short, S),
|
|
1179 |
DECLARE_GETSETNATIVE(Char, C),
|
|
1180 |
DECLARE_GETSETNATIVE(Int, I),
|
|
1181 |
DECLARE_GETSETNATIVE(Long, J),
|
|
1182 |
DECLARE_GETSETNATIVE(Float, F),
|
|
1183 |
DECLARE_GETSETNATIVE(Double, D),
|
|
1184 |
|
|
1185 |
{CC"getAddress", CC"("ADR")"ADR, FN_PTR(Unsafe_GetNativeAddress)},
|
|
1186 |
{CC"putAddress", CC"("ADR""ADR")V", FN_PTR(Unsafe_SetNativeAddress)},
|
|
1187 |
|
|
1188 |
{CC"allocateMemory", CC"(J)"ADR, FN_PTR(Unsafe_AllocateMemory)},
|
|
1189 |
{CC"reallocateMemory", CC"("ADR"J)"ADR, FN_PTR(Unsafe_ReallocateMemory)},
|
|
1190 |
// {CC"setMemory", CC"("ADR"JB)V", FN_PTR(Unsafe_SetMemory)},
|
|
1191 |
// {CC"copyMemory", CC"("ADR ADR"J)V", FN_PTR(Unsafe_CopyMemory)},
|
|
1192 |
{CC"freeMemory", CC"("ADR")V", FN_PTR(Unsafe_FreeMemory)},
|
|
1193 |
|
|
1194 |
{CC"objectFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_ObjectFieldOffset)},
|
|
1195 |
{CC"staticFieldOffset", CC"("FLD")J", FN_PTR(Unsafe_StaticFieldOffset)},
|
|
1196 |
{CC"staticFieldBase", CC"("FLD")"OBJ, FN_PTR(Unsafe_StaticFieldBaseFromField)},
|
|
1197 |
{CC"ensureClassInitialized",CC"("CLS")V", FN_PTR(Unsafe_EnsureClassInitialized)},
|
|
1198 |
{CC"arrayBaseOffset", CC"("CLS")I", FN_PTR(Unsafe_ArrayBaseOffset)},
|
|
1199 |
{CC"arrayIndexScale", CC"("CLS")I", FN_PTR(Unsafe_ArrayIndexScale)},
|
|
1200 |
{CC"addressSize", CC"()I", FN_PTR(Unsafe_AddressSize)},
|
|
1201 |
{CC"pageSize", CC"()I", FN_PTR(Unsafe_PageSize)},
|
|
1202 |
|
|
1203 |
{CC"defineClass", CC"("DC0_Args")"CLS, FN_PTR(Unsafe_DefineClass0)},
|
|
1204 |
{CC"defineClass", CC"("DC1_Args")"CLS, FN_PTR(Unsafe_DefineClass1)},
|
|
1205 |
{CC"allocateInstance", CC"("CLS")"OBJ, FN_PTR(Unsafe_AllocateInstance)},
|
|
1206 |
{CC"monitorEnter", CC"("OBJ")V", FN_PTR(Unsafe_MonitorEnter)},
|
|
1207 |
{CC"monitorExit", CC"("OBJ")V", FN_PTR(Unsafe_MonitorExit)},
|
|
1208 |
{CC"tryMonitorEnter", CC"("OBJ")Z", FN_PTR(Unsafe_TryMonitorEnter)},
|
|
1209 |
{CC"throwException", CC"("THR")V", FN_PTR(Unsafe_ThrowException)},
|
|
1210 |
{CC"compareAndSwapObject", CC"("OBJ"J"OBJ""OBJ")Z", FN_PTR(Unsafe_CompareAndSwapObject)},
|
|
1211 |
{CC"compareAndSwapInt", CC"("OBJ"J""I""I"")Z", FN_PTR(Unsafe_CompareAndSwapInt)},
|
|
1212 |
{CC"compareAndSwapLong", CC"("OBJ"J""J""J"")Z", FN_PTR(Unsafe_CompareAndSwapLong)},
|
|
1213 |
{CC"putOrderedObject", CC"("OBJ"J"OBJ")V", FN_PTR(Unsafe_SetOrderedObject)},
|
|
1214 |
{CC"putOrderedInt", CC"("OBJ"JI)V", FN_PTR(Unsafe_SetOrderedInt)},
|
|
1215 |
{CC"putOrderedLong", CC"("OBJ"JJ)V", FN_PTR(Unsafe_SetOrderedLong)},
|
|
1216 |
{CC"park", CC"(ZJ)V", FN_PTR(Unsafe_Park)},
|
|
1217 |
{CC"unpark", CC"("OBJ")V", FN_PTR(Unsafe_Unpark)}
|
|
1218 |
|
|
1219 |
// {CC"getLoadAverage", CC"([DI)I", FN_PTR(Unsafe_Loadavg)},
|
|
1220 |
|
|
1221 |
// {CC"prefetchRead", CC"("OBJ"J)V", FN_PTR(Unsafe_PrefetchRead)},
|
|
1222 |
// {CC"prefetchWrite", CC"("OBJ"J)V", FN_PTR(Unsafe_PrefetchWrite)}
|
|
1223 |
// {CC"prefetchReadStatic", CC"("OBJ"J)V", FN_PTR(Unsafe_PrefetchRead)},
|
|
1224 |
// {CC"prefetchWriteStatic",CC"("OBJ"J)V", FN_PTR(Unsafe_PrefetchWrite)}
|
|
1225 |
|
|
1226 |
};
|
|
1227 |
|
|
1228 |
JNINativeMethod loadavg_method[] = {
|
|
1229 |
{CC"getLoadAverage", CC"([DI)I", FN_PTR(Unsafe_Loadavg)}
|
|
1230 |
};
|
|
1231 |
|
|
1232 |
JNINativeMethod prefetch_methods[] = {
|
|
1233 |
{CC"prefetchRead", CC"("OBJ"J)V", FN_PTR(Unsafe_PrefetchRead)},
|
|
1234 |
{CC"prefetchWrite", CC"("OBJ"J)V", FN_PTR(Unsafe_PrefetchWrite)},
|
|
1235 |
{CC"prefetchReadStatic", CC"("OBJ"J)V", FN_PTR(Unsafe_PrefetchRead)},
|
|
1236 |
{CC"prefetchWriteStatic",CC"("OBJ"J)V", FN_PTR(Unsafe_PrefetchWrite)}
|
|
1237 |
};
|
|
1238 |
|
|
1239 |
JNINativeMethod memcopy_methods[] = {
|
|
1240 |
{CC"copyMemory", CC"("OBJ"J"OBJ"JJ)V", FN_PTR(Unsafe_CopyMemory2)},
|
|
1241 |
{CC"setMemory", CC"("OBJ"JJB)V", FN_PTR(Unsafe_SetMemory2)}
|
|
1242 |
};
|
|
1243 |
|
|
1244 |
JNINativeMethod memcopy_methods_15[] = {
|
|
1245 |
{CC"setMemory", CC"("ADR"JB)V", FN_PTR(Unsafe_SetMemory)},
|
|
1246 |
{CC"copyMemory", CC"("ADR ADR"J)V", FN_PTR(Unsafe_CopyMemory)}
|
|
1247 |
};
|
|
1248 |
|
|
1249 |
|
|
1250 |
#undef CC
|
|
1251 |
#undef FN_PTR
|
|
1252 |
|
|
1253 |
#undef ADR
|
|
1254 |
#undef LANG
|
|
1255 |
#undef OBJ
|
|
1256 |
#undef CLS
|
|
1257 |
#undef CTR
|
|
1258 |
#undef FLD
|
|
1259 |
#undef MTH
|
|
1260 |
#undef THR
|
|
1261 |
#undef DC0_Args
|
|
1262 |
#undef DC1_Args
|
|
1263 |
|
|
1264 |
#undef DECLARE_GETSETOOP
|
|
1265 |
#undef DECLARE_GETSETNATIVE
|
|
1266 |
|
|
1267 |
|
|
1268 |
// This one function is exported, used by NativeLookup.
|
|
1269 |
// The Unsafe_xxx functions above are called only from the interpreter.
|
|
1270 |
// The optimizer looks at names and signatures to recognize
|
|
1271 |
// individual functions.
|
|
1272 |
|
|
1273 |
JVM_ENTRY(void, JVM_RegisterUnsafeMethods(JNIEnv *env, jclass unsafecls))
|
|
1274 |
UnsafeWrapper("JVM_RegisterUnsafeMethods");
|
|
1275 |
{
|
|
1276 |
ThreadToNativeFromVM ttnfv(thread);
|
|
1277 |
{
|
|
1278 |
env->RegisterNatives(unsafecls, loadavg_method, sizeof(loadavg_method)/sizeof(JNINativeMethod));
|
|
1279 |
if (env->ExceptionOccurred()) {
|
|
1280 |
if (PrintMiscellaneous && (Verbose || WizardMode)) {
|
|
1281 |
tty->print_cr("Warning: SDK 1.6 Unsafe.loadavg not found.");
|
|
1282 |
}
|
|
1283 |
env->ExceptionClear();
|
|
1284 |
}
|
|
1285 |
}
|
|
1286 |
{
|
|
1287 |
env->RegisterNatives(unsafecls, prefetch_methods, sizeof(prefetch_methods)/sizeof(JNINativeMethod));
|
|
1288 |
if (env->ExceptionOccurred()) {
|
|
1289 |
if (PrintMiscellaneous && (Verbose || WizardMode)) {
|
|
1290 |
tty->print_cr("Warning: SDK 1.6 Unsafe.prefetchRead/Write not found.");
|
|
1291 |
}
|
|
1292 |
env->ExceptionClear();
|
|
1293 |
}
|
|
1294 |
}
|
|
1295 |
{
|
|
1296 |
env->RegisterNatives(unsafecls, memcopy_methods, sizeof(memcopy_methods)/sizeof(JNINativeMethod));
|
|
1297 |
if (env->ExceptionOccurred()) {
|
|
1298 |
if (PrintMiscellaneous && (Verbose || WizardMode)) {
|
|
1299 |
tty->print_cr("Warning: SDK 1.7 Unsafe.copyMemory not found.");
|
|
1300 |
}
|
|
1301 |
env->ExceptionClear();
|
|
1302 |
env->RegisterNatives(unsafecls, memcopy_methods_15, sizeof(memcopy_methods_15)/sizeof(JNINativeMethod));
|
|
1303 |
if (env->ExceptionOccurred()) {
|
|
1304 |
if (PrintMiscellaneous && (Verbose || WizardMode)) {
|
|
1305 |
tty->print_cr("Warning: SDK 1.5 Unsafe.copyMemory not found.");
|
|
1306 |
}
|
|
1307 |
env->ExceptionClear();
|
|
1308 |
}
|
|
1309 |
}
|
|
1310 |
}
|
|
1311 |
int status = env->RegisterNatives(unsafecls, methods, sizeof(methods)/sizeof(JNINativeMethod));
|
|
1312 |
if (env->ExceptionOccurred()) {
|
|
1313 |
if (PrintMiscellaneous && (Verbose || WizardMode)) {
|
|
1314 |
tty->print_cr("Warning: SDK 1.6 version of Unsafe not found.");
|
|
1315 |
}
|
|
1316 |
env->ExceptionClear();
|
|
1317 |
// %%% For now, be backward compatible with an older class:
|
|
1318 |
status = env->RegisterNatives(unsafecls, methods_15, sizeof(methods_15)/sizeof(JNINativeMethod));
|
|
1319 |
}
|
|
1320 |
if (env->ExceptionOccurred()) {
|
|
1321 |
if (PrintMiscellaneous && (Verbose || WizardMode)) {
|
|
1322 |
tty->print_cr("Warning: SDK 1.5 version of Unsafe not found.");
|
|
1323 |
}
|
|
1324 |
env->ExceptionClear();
|
|
1325 |
// %%% For now, be backward compatible with an older class:
|
|
1326 |
status = env->RegisterNatives(unsafecls, methods_141, sizeof(methods_141)/sizeof(JNINativeMethod));
|
|
1327 |
}
|
|
1328 |
if (env->ExceptionOccurred()) {
|
|
1329 |
if (PrintMiscellaneous && (Verbose || WizardMode)) {
|
|
1330 |
tty->print_cr("Warning: SDK 1.4.1 version of Unsafe not found.");
|
|
1331 |
}
|
|
1332 |
env->ExceptionClear();
|
|
1333 |
// %%% For now, be backward compatible with an older class:
|
|
1334 |
status = env->RegisterNatives(unsafecls, methods_140, sizeof(methods_140)/sizeof(JNINativeMethod));
|
|
1335 |
}
|
|
1336 |
guarantee(status == 0, "register unsafe natives");
|
|
1337 |
}
|
|
1338 |
JVM_END
|