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/*
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* Copyright 1997-2007 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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# include "incls/_precompiled.incl"
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# include "incls/_jni.cpp.incl"
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static jint CurrentVersion = JNI_VERSION_1_6;
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// The DT_RETURN_MARK macros create a scoped object to fire the dtrace
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// '-return' probe regardless of the return path is taken out of the function.
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// Methods that have multiple return paths use this to avoid having to
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// instrument each return path. Methods that use CHECK or THROW must use this
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// since those macros can cause an immedate uninstrumented return.
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//
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// In order to get the return value, a reference to the variable containing
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// the return value must be passed to the contructor of the object, and
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// the return value must be set before return (since the mark object has
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// a reference to it).
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//
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// Example:
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// DT_RETURN_MARK_DECL(SomeFunc, int);
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// JNI_ENTRY(int, SomeFunc, ...)
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// int return_value = 0;
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// DT_RETURN_MARK(SomeFunc, int, (const int&)return_value);
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// foo(CHECK_0)
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// return_value = 5;
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// return return_value;
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// JNI_END
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#define DT_RETURN_MARK_DECL(name, type) \
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HS_DTRACE_PROBE_DECL1(hotspot_jni, name##__return, type); \
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DTRACE_ONLY( \
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class DTraceReturnProbeMark_##name { \
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public: \
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const type& _ret_ref; \
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DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
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~DTraceReturnProbeMark_##name() { \
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HS_DTRACE_PROBE1(hotspot_jni, name##__return, _ret_ref); \
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} \
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} \
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)
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// Void functions are simpler since there's no return value
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#define DT_VOID_RETURN_MARK_DECL(name) \
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HS_DTRACE_PROBE_DECL0(hotspot_jni, name##__return); \
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DTRACE_ONLY( \
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class DTraceReturnProbeMark_##name { \
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public: \
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~DTraceReturnProbeMark_##name() { \
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HS_DTRACE_PROBE0(hotspot_jni, name##__return); \
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} \
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} \
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)
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// Place these macros in the function to mark the return. Non-void
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// functions need the type and address of the return value.
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#define DT_RETURN_MARK(name, type, ref) \
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DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) )
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#define DT_VOID_RETURN_MARK(name) \
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DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark )
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// Use these to select distinct code for floating-point vs. non-floating point
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// situations. Used from within common macros where we need slightly
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// different behavior for Float/Double
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#define FP_SELECT_Boolean(intcode, fpcode) intcode
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#define FP_SELECT_Byte(intcode, fpcode) intcode
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#define FP_SELECT_Char(intcode, fpcode) intcode
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#define FP_SELECT_Short(intcode, fpcode) intcode
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#define FP_SELECT_Object(intcode, fpcode) intcode
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#define FP_SELECT_Int(intcode, fpcode) intcode
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#define FP_SELECT_Long(intcode, fpcode) intcode
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#define FP_SELECT_Float(intcode, fpcode) fpcode
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#define FP_SELECT_Double(intcode, fpcode) fpcode
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#define FP_SELECT(TypeName, intcode, fpcode) \
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FP_SELECT_##TypeName(intcode, fpcode)
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#define COMMA ,
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// Choose DT_RETURN_MARK macros based on the type: float/double -> void
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// (dtrace doesn't do FP yet)
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#define DT_RETURN_MARK_DECL_FOR(TypeName, name, type) \
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FP_SELECT(TypeName, \
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DT_RETURN_MARK_DECL(name, type), DT_VOID_RETURN_MARK_DECL(name) )
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#define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \
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FP_SELECT(TypeName, \
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DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) )
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// out-of-line helpers for class jfieldIDWorkaround:
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bool jfieldIDWorkaround::is_valid_jfieldID(klassOop k, jfieldID id) {
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if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) {
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uintptr_t as_uint = (uintptr_t) id;
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intptr_t offset = raw_instance_offset(id);
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if (is_checked_jfieldID(id)) {
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if (!klass_hash_ok(k, id)) {
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return false;
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}
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}
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return instanceKlass::cast(k)->contains_field_offset(offset);
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} else {
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JNIid* result = (JNIid*) id;
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#ifdef ASSERT
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return result != NULL && result->is_static_field_id();
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#else
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return result != NULL;
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#endif
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}
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}
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intptr_t jfieldIDWorkaround::encode_klass_hash(klassOop k, intptr_t offset) {
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if (offset <= small_offset_mask) {
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klassOop field_klass = k;
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klassOop super_klass = Klass::cast(field_klass)->super();
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while (instanceKlass::cast(super_klass)->contains_field_offset(offset)) {
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field_klass = super_klass; // super contains the field also
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super_klass = Klass::cast(field_klass)->super();
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}
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debug_only(No_Safepoint_Verifier nosafepoint;)
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uintptr_t klass_hash = field_klass->identity_hash();
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return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place;
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} else {
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#if 0
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#ifndef PRODUCT
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{
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ResourceMark rm;
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warning("VerifyJNIFields: long offset %d in %s", offset, Klass::cast(k)->external_name());
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}
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#endif
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#endif
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return 0;
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}
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}
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bool jfieldIDWorkaround::klass_hash_ok(klassOop k, jfieldID id) {
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uintptr_t as_uint = (uintptr_t) id;
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intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask;
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do {
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debug_only(No_Safepoint_Verifier nosafepoint;)
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// Could use a non-blocking query for identity_hash here...
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if ((k->identity_hash() & klass_mask) == klass_hash)
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return true;
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k = Klass::cast(k)->super();
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} while (k != NULL);
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return false;
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}
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void jfieldIDWorkaround::verify_instance_jfieldID(klassOop k, jfieldID id) {
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guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" );
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uintptr_t as_uint = (uintptr_t) id;
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intptr_t offset = raw_instance_offset(id);
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if (VerifyJNIFields) {
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if (is_checked_jfieldID(id)) {
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guarantee(klass_hash_ok(k, id),
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"Bug in native code: jfieldID class must match object");
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} else {
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#if 0
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#ifndef PRODUCT
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if (Verbose) {
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ResourceMark rm;
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warning("VerifyJNIFields: unverified offset %d for %s", offset, Klass::cast(k)->external_name());
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}
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#endif
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#endif
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}
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}
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guarantee(instanceKlass::cast(k)->contains_field_offset(offset),
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"Bug in native code: jfieldID offset must address interior of object");
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}
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// Pick a reasonable higher bound for local capacity requested
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// for EnsureLocalCapacity and PushLocalFrame. We don't want it too
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// high because a test (or very unusual application) may try to allocate
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// that many handles and run out of swap space. An implementation is
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// permitted to allocate more handles than the ensured capacity, so this
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// value is set high enough to prevent compatibility problems.
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const int MAX_REASONABLE_LOCAL_CAPACITY = 4*K;
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// Wrapper to trace JNI functions
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#ifdef ASSERT
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Histogram* JNIHistogram;
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static volatile jint JNIHistogram_lock = 0;
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class JNITraceWrapper : public StackObj {
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public:
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JNITraceWrapper(const char* format, ...) {
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if (TraceJNICalls) {
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va_list ap;
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va_start(ap, format);
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tty->print("JNI ");
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tty->vprint_cr(format, ap);
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va_end(ap);
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}
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}
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};
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class JNIHistogramElement : public HistogramElement {
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public:
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JNIHistogramElement(const char* name);
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};
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JNIHistogramElement::JNIHistogramElement(const char* elementName) {
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_name = elementName;
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uintx count = 0;
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while (Atomic::cmpxchg(1, &JNIHistogram_lock, 0) != 0) {
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while (OrderAccess::load_acquire(&JNIHistogram_lock) != 0) {
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count +=1;
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if ( (WarnOnStalledSpinLock > 0)
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&& (count % WarnOnStalledSpinLock == 0)) {
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warning("JNIHistogram_lock seems to be stalled");
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}
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}
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}
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if(JNIHistogram == NULL)
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JNIHistogram = new Histogram("JNI Call Counts",100);
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JNIHistogram->add_element(this);
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Atomic::dec(&JNIHistogram_lock);
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}
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#define JNICountWrapper(arg) \
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static JNIHistogramElement* e = new JNIHistogramElement(arg); \
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/* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \
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if (e != NULL) e->increment_count()
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#define JNIWrapper(arg) JNICountWrapper(arg); JNITraceWrapper(arg)
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#else
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#define JNIWrapper(arg)
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#endif
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// Implementation of JNI entries
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DT_RETURN_MARK_DECL(DefineClass, jclass);
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JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef,
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const jbyte *buf, jsize bufLen))
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JNIWrapper("DefineClass");
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DTRACE_PROBE5(hotspot_jni, DefineClass__entry,
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env, name, loaderRef, buf, bufLen);
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jclass cls = NULL;
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DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls);
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// Since exceptions can be thrown, class initialization can take place
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// if name is NULL no check for class name in .class stream has to be made.
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symbolHandle class_name;
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if (name != NULL) {
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const int str_len = (int)strlen(name);
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if (str_len > symbolOopDesc::max_length()) {
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// It's impossible to create this class; the name cannot fit
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// into the constant pool.
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THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
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}
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class_name = oopFactory::new_symbol_handle(name, str_len, CHECK_NULL);
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}
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ResourceMark rm(THREAD);
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ClassFileStream st((u1*) buf, bufLen, NULL);
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Handle class_loader (THREAD, JNIHandles::resolve(loaderRef));
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if (UsePerfData && !class_loader.is_null()) {
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// check whether the current caller thread holds the lock or not.
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// If not, increment the corresponding counter
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if (ObjectSynchronizer::
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query_lock_ownership((JavaThread*)THREAD, class_loader) !=
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ObjectSynchronizer::owner_self) {
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ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc();
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}
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}
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klassOop k = SystemDictionary::resolve_from_stream(class_name, class_loader,
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Handle(), &st, CHECK_NULL);
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cls = (jclass)JNIHandles::make_local(
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env, Klass::cast(k)->java_mirror());
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return cls;
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JNI_END
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static bool first_time_FindClass = true;
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DT_RETURN_MARK_DECL(FindClass, jclass);
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JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name))
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JNIWrapper("FindClass");
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DTRACE_PROBE2(hotspot_jni, FindClass__entry, env, name);
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jclass result = NULL;
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DT_RETURN_MARK(FindClass, jclass, (const jclass&)result);
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// Remember if we are the first invocation of jni_FindClass
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bool first_time = first_time_FindClass;
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first_time_FindClass = false;
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// Sanity check the name: it cannot be null or larger than the maximum size
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// name we can fit in the constant pool.
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if (name == NULL || (int)strlen(name) > symbolOopDesc::max_length()) {
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THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
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}
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//%note jni_3
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Handle loader;
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Handle protection_domain;
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// Find calling class
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instanceKlassHandle k (THREAD, thread->security_get_caller_class(0));
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if (k.not_null()) {
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loader = Handle(THREAD, k->class_loader());
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// Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed
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// in the correct class context.
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if (loader.is_null() &&
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k->name() == vmSymbols::java_lang_ClassLoader_NativeLibrary()) {
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JavaValue result(T_OBJECT);
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JavaCalls::call_static(&result, k,
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vmSymbolHandles::getFromClass_name(),
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vmSymbolHandles::void_class_signature(),
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thread);
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if (HAS_PENDING_EXCEPTION) {
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Handle ex(thread, thread->pending_exception());
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CLEAR_PENDING_EXCEPTION;
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THROW_HANDLE_0(ex);
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}
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oop mirror = (oop) result.get_jobject();
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loader = Handle(THREAD,
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instanceKlass::cast(java_lang_Class::as_klassOop(mirror))->class_loader());
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protection_domain = Handle(THREAD,
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instanceKlass::cast(java_lang_Class::as_klassOop(mirror))->protection_domain());
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}
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} else {
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// We call ClassLoader.getSystemClassLoader to obtain the system class loader.
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loader = Handle(THREAD, SystemDictionary::java_system_loader());
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}
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symbolHandle sym = oopFactory::new_symbol_handle(name, CHECK_NULL);
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result = find_class_from_class_loader(env, sym, true, loader,
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protection_domain, true, thread);
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// If we were the first invocation of jni_FindClass, we enable compilation again
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// rather than just allowing invocation counter to overflow and decay.
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// Controlled by flag DelayCompilationDuringStartup.
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if (first_time && !CompileTheWorld)
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CompilationPolicy::completed_vm_startup();
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return result;
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JNI_END
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DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID);
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JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method))
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JNIWrapper("FromReflectedMethod");
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DTRACE_PROBE2(hotspot_jni, FromReflectedMethod__entry, env, method);
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jmethodID ret = NULL;
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|
380 |
DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret);
|
|
381 |
|
|
382 |
// method is a handle to a java.lang.reflect.Method object
|
|
383 |
oop reflected = JNIHandles::resolve_non_null(method);
|
|
384 |
oop mirror = NULL;
|
|
385 |
int slot = 0;
|
|
386 |
|
|
387 |
if (reflected->klass() == SystemDictionary::reflect_constructor_klass()) {
|
|
388 |
mirror = java_lang_reflect_Constructor::clazz(reflected);
|
|
389 |
slot = java_lang_reflect_Constructor::slot(reflected);
|
|
390 |
} else {
|
|
391 |
assert(reflected->klass() == SystemDictionary::reflect_method_klass(), "wrong type");
|
|
392 |
mirror = java_lang_reflect_Method::clazz(reflected);
|
|
393 |
slot = java_lang_reflect_Method::slot(reflected);
|
|
394 |
}
|
|
395 |
klassOop k = java_lang_Class::as_klassOop(mirror);
|
|
396 |
|
|
397 |
KlassHandle k1(THREAD, k);
|
|
398 |
// Make sure class is initialized before handing id's out to methods
|
|
399 |
Klass::cast(k1())->initialize(CHECK_NULL);
|
|
400 |
methodOop m = instanceKlass::cast(k1())->method_with_idnum(slot);
|
|
401 |
ret = m==NULL? NULL : m->jmethod_id(); // return NULL if reflected method deleted
|
|
402 |
return ret;
|
|
403 |
JNI_END
|
|
404 |
|
|
405 |
DT_RETURN_MARK_DECL(FromReflectedField, jfieldID);
|
|
406 |
|
|
407 |
JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field))
|
|
408 |
JNIWrapper("FromReflectedField");
|
|
409 |
DTRACE_PROBE2(hotspot_jni, FromReflectedField__entry, env, field);
|
|
410 |
jfieldID ret = NULL;
|
|
411 |
DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret);
|
|
412 |
|
|
413 |
// field is a handle to a java.lang.reflect.Field object
|
|
414 |
oop reflected = JNIHandles::resolve_non_null(field);
|
|
415 |
oop mirror = java_lang_reflect_Field::clazz(reflected);
|
|
416 |
klassOop k = java_lang_Class::as_klassOop(mirror);
|
|
417 |
int slot = java_lang_reflect_Field::slot(reflected);
|
|
418 |
int modifiers = java_lang_reflect_Field::modifiers(reflected);
|
|
419 |
|
|
420 |
KlassHandle k1(THREAD, k);
|
|
421 |
// Make sure class is initialized before handing id's out to fields
|
|
422 |
Klass::cast(k1())->initialize(CHECK_NULL);
|
|
423 |
|
|
424 |
// First check if this is a static field
|
|
425 |
if (modifiers & JVM_ACC_STATIC) {
|
|
426 |
intptr_t offset = instanceKlass::cast(k1())->offset_from_fields( slot );
|
|
427 |
JNIid* id = instanceKlass::cast(k1())->jni_id_for(offset);
|
|
428 |
assert(id != NULL, "corrupt Field object");
|
|
429 |
debug_only(id->set_is_static_field_id();)
|
|
430 |
// A jfieldID for a static field is a JNIid specifying the field holder and the offset within the klassOop
|
|
431 |
ret = jfieldIDWorkaround::to_static_jfieldID(id);
|
|
432 |
return ret;
|
|
433 |
}
|
|
434 |
|
|
435 |
// The slot is the index of the field description in the field-array
|
|
436 |
// The jfieldID is the offset of the field within the object
|
|
437 |
// It may also have hash bits for k, if VerifyJNIFields is turned on.
|
|
438 |
intptr_t offset = instanceKlass::cast(k1())->offset_from_fields( slot );
|
|
439 |
assert(instanceKlass::cast(k1())->contains_field_offset(offset), "stay within object");
|
|
440 |
ret = jfieldIDWorkaround::to_instance_jfieldID(k1(), offset);
|
|
441 |
return ret;
|
|
442 |
JNI_END
|
|
443 |
|
|
444 |
DT_RETURN_MARK_DECL(ToReflectedMethod, jobject);
|
|
445 |
|
|
446 |
JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic))
|
|
447 |
JNIWrapper("ToReflectedMethod");
|
|
448 |
DTRACE_PROBE4(hotspot_jni, ToReflectedMethod__entry, env, cls, method_id, isStatic);
|
|
449 |
jobject ret = NULL;
|
|
450 |
DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret);
|
|
451 |
|
|
452 |
methodHandle m (THREAD, JNIHandles::resolve_jmethod_id(method_id));
|
|
453 |
assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match");
|
|
454 |
oop reflection_method;
|
|
455 |
if (m->is_initializer()) {
|
|
456 |
reflection_method = Reflection::new_constructor(m, CHECK_NULL);
|
|
457 |
} else {
|
|
458 |
reflection_method = Reflection::new_method(m, UseNewReflection, false, CHECK_NULL);
|
|
459 |
}
|
|
460 |
ret = JNIHandles::make_local(env, reflection_method);
|
|
461 |
return ret;
|
|
462 |
JNI_END
|
|
463 |
|
|
464 |
DT_RETURN_MARK_DECL(GetSuperclass, jclass);
|
|
465 |
|
|
466 |
JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub))
|
|
467 |
JNIWrapper("GetSuperclass");
|
|
468 |
DTRACE_PROBE2(hotspot_jni, GetSuperclass__entry, env, sub);
|
|
469 |
jclass obj = NULL;
|
|
470 |
DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj);
|
|
471 |
|
|
472 |
oop mirror = JNIHandles::resolve_non_null(sub);
|
|
473 |
// primitive classes return NULL
|
|
474 |
if (java_lang_Class::is_primitive(mirror)) return NULL;
|
|
475 |
|
|
476 |
// Rules of Class.getSuperClass as implemented by KLass::java_super:
|
|
477 |
// arrays return Object
|
|
478 |
// interfaces return NULL
|
|
479 |
// proper classes return Klass::super()
|
|
480 |
klassOop k = java_lang_Class::as_klassOop(mirror);
|
|
481 |
if (Klass::cast(k)->is_interface()) return NULL;
|
|
482 |
|
|
483 |
// return mirror for superclass
|
|
484 |
klassOop super = Klass::cast(k)->java_super();
|
|
485 |
// super2 is the value computed by the compiler's getSuperClass intrinsic:
|
|
486 |
debug_only(klassOop super2 = ( Klass::cast(k)->oop_is_javaArray()
|
|
487 |
? SystemDictionary::object_klass()
|
|
488 |
: Klass::cast(k)->super() ) );
|
|
489 |
assert(super == super2,
|
|
490 |
"java_super computation depends on interface, array, other super");
|
|
491 |
obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(Klass::cast(super)->java_mirror());
|
|
492 |
return obj;
|
|
493 |
JNI_END
|
|
494 |
|
|
495 |
JNI_QUICK_ENTRY(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super))
|
|
496 |
JNIWrapper("IsSubclassOf");
|
|
497 |
DTRACE_PROBE3(hotspot_jni, IsAssignableFrom__entry, env, sub, super);
|
|
498 |
oop sub_mirror = JNIHandles::resolve_non_null(sub);
|
|
499 |
oop super_mirror = JNIHandles::resolve_non_null(super);
|
|
500 |
if (java_lang_Class::is_primitive(sub_mirror) ||
|
|
501 |
java_lang_Class::is_primitive(super_mirror)) {
|
|
502 |
jboolean ret = (sub_mirror == super_mirror);
|
|
503 |
DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
|
|
504 |
return ret;
|
|
505 |
}
|
|
506 |
klassOop sub_klass = java_lang_Class::as_klassOop(sub_mirror);
|
|
507 |
klassOop super_klass = java_lang_Class::as_klassOop(super_mirror);
|
|
508 |
assert(sub_klass != NULL && super_klass != NULL, "invalid arguments to jni_IsAssignableFrom");
|
|
509 |
jboolean ret = Klass::cast(sub_klass)->is_subtype_of(super_klass) ?
|
|
510 |
JNI_TRUE : JNI_FALSE;
|
|
511 |
DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
|
|
512 |
return ret;
|
|
513 |
JNI_END
|
|
514 |
|
|
515 |
DT_RETURN_MARK_DECL(Throw, jint);
|
|
516 |
|
|
517 |
JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj))
|
|
518 |
JNIWrapper("Throw");
|
|
519 |
DTRACE_PROBE2(hotspot_jni, Throw__entry, env, obj);
|
|
520 |
jint ret = JNI_OK;
|
|
521 |
DT_RETURN_MARK(Throw, jint, (const jint&)ret);
|
|
522 |
|
|
523 |
THROW_OOP_(JNIHandles::resolve(obj), JNI_OK);
|
|
524 |
ShouldNotReachHere();
|
|
525 |
JNI_END
|
|
526 |
|
|
527 |
DT_RETURN_MARK_DECL(ThrowNew, jint);
|
|
528 |
|
|
529 |
JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message))
|
|
530 |
JNIWrapper("ThrowNew");
|
|
531 |
DTRACE_PROBE3(hotspot_jni, ThrowNew__entry, env, clazz, message);
|
|
532 |
jint ret = JNI_OK;
|
|
533 |
DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret);
|
|
534 |
|
|
535 |
instanceKlass* k = instanceKlass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
|
|
536 |
symbolHandle name = symbolHandle(THREAD, k->name());
|
|
537 |
Handle class_loader (THREAD, k->class_loader());
|
|
538 |
Handle protection_domain (THREAD, k->protection_domain());
|
|
539 |
THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK);
|
|
540 |
ShouldNotReachHere();
|
|
541 |
JNI_END
|
|
542 |
|
|
543 |
|
|
544 |
// JNI functions only transform a pending async exception to a synchronous
|
|
545 |
// exception in ExceptionOccurred and ExceptionCheck calls, since
|
|
546 |
// delivering an async exception in other places won't change the native
|
|
547 |
// code's control flow and would be harmful when native code further calls
|
|
548 |
// JNI functions with a pending exception. Async exception is also checked
|
|
549 |
// during the call, so ExceptionOccurred/ExceptionCheck won't return
|
|
550 |
// false but deliver the async exception at the very end during
|
|
551 |
// state transition.
|
|
552 |
|
|
553 |
static void jni_check_async_exceptions(JavaThread *thread) {
|
|
554 |
assert(thread == Thread::current(), "must be itself");
|
|
555 |
thread->check_and_handle_async_exceptions();
|
|
556 |
}
|
|
557 |
|
|
558 |
JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env))
|
|
559 |
JNIWrapper("ExceptionOccurred");
|
|
560 |
DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__entry, env);
|
|
561 |
jni_check_async_exceptions(thread);
|
|
562 |
oop exception = thread->pending_exception();
|
|
563 |
jthrowable ret = (jthrowable) JNIHandles::make_local(env, exception);
|
|
564 |
DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__return, ret);
|
|
565 |
return ret;
|
|
566 |
JNI_END
|
|
567 |
|
|
568 |
|
|
569 |
JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env))
|
|
570 |
JNIWrapper("ExceptionDescribe");
|
|
571 |
DTRACE_PROBE1(hotspot_jni, ExceptionDescribe__entry, env);
|
|
572 |
if (thread->has_pending_exception()) {
|
|
573 |
Handle ex(thread, thread->pending_exception());
|
|
574 |
thread->clear_pending_exception();
|
|
575 |
if (ex->is_a(SystemDictionary::threaddeath_klass())) {
|
|
576 |
// Don't print anything if we are being killed.
|
|
577 |
} else {
|
|
578 |
jio_fprintf(defaultStream::error_stream(), "Exception ");
|
|
579 |
if (thread != NULL && thread->threadObj() != NULL) {
|
|
580 |
ResourceMark rm(THREAD);
|
|
581 |
jio_fprintf(defaultStream::error_stream(),
|
|
582 |
"in thread \"%s\" ", thread->get_thread_name());
|
|
583 |
}
|
|
584 |
if (ex->is_a(SystemDictionary::throwable_klass())) {
|
|
585 |
JavaValue result(T_VOID);
|
|
586 |
JavaCalls::call_virtual(&result,
|
|
587 |
ex,
|
|
588 |
KlassHandle(THREAD,
|
|
589 |
SystemDictionary::throwable_klass()),
|
|
590 |
vmSymbolHandles::printStackTrace_name(),
|
|
591 |
vmSymbolHandles::void_method_signature(),
|
|
592 |
THREAD);
|
|
593 |
// If an exception is thrown in the call it gets thrown away. Not much
|
|
594 |
// we can do with it. The native code that calls this, does not check
|
|
595 |
// for the exception - hence, it might still be in the thread when DestroyVM gets
|
|
596 |
// called, potentially causing a few asserts to trigger - since no pending exception
|
|
597 |
// is expected.
|
|
598 |
CLEAR_PENDING_EXCEPTION;
|
|
599 |
} else {
|
|
600 |
ResourceMark rm(THREAD);
|
|
601 |
jio_fprintf(defaultStream::error_stream(),
|
|
602 |
". Uncaught exception of type %s.",
|
|
603 |
Klass::cast(ex->klass())->external_name());
|
|
604 |
}
|
|
605 |
}
|
|
606 |
}
|
|
607 |
DTRACE_PROBE(hotspot_jni, ExceptionDescribe__return);
|
|
608 |
JNI_END
|
|
609 |
|
|
610 |
|
|
611 |
JNI_QUICK_ENTRY(void, jni_ExceptionClear(JNIEnv *env))
|
|
612 |
JNIWrapper("ExceptionClear");
|
|
613 |
DTRACE_PROBE1(hotspot_jni, ExceptionClear__entry, env);
|
|
614 |
|
|
615 |
// The jni code might be using this API to clear java thrown exception.
|
|
616 |
// So just mark jvmti thread exception state as exception caught.
|
|
617 |
JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state();
|
|
618 |
if (state != NULL && state->is_exception_detected()) {
|
|
619 |
state->set_exception_caught();
|
|
620 |
}
|
|
621 |
thread->clear_pending_exception();
|
|
622 |
DTRACE_PROBE(hotspot_jni, ExceptionClear__return);
|
|
623 |
JNI_END
|
|
624 |
|
|
625 |
|
|
626 |
JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg))
|
|
627 |
JNIWrapper("FatalError");
|
|
628 |
DTRACE_PROBE2(hotspot_jni, FatalError__entry, env, msg);
|
|
629 |
tty->print_cr("FATAL ERROR in native method: %s", msg);
|
|
630 |
thread->print_stack();
|
|
631 |
os::abort(false); // Prevent core dump, causes a jck failure.
|
|
632 |
JNI_END
|
|
633 |
|
|
634 |
|
|
635 |
JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity))
|
|
636 |
JNIWrapper("PushLocalFrame");
|
|
637 |
DTRACE_PROBE2(hotspot_jni, PushLocalFrame__entry, env, capacity);
|
|
638 |
//%note jni_11
|
|
639 |
if (capacity < 0 && capacity > MAX_REASONABLE_LOCAL_CAPACITY) {
|
|
640 |
DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, JNI_ERR);
|
|
641 |
return JNI_ERR;
|
|
642 |
}
|
|
643 |
JNIHandleBlock* old_handles = thread->active_handles();
|
|
644 |
JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread);
|
|
645 |
assert(new_handles != NULL, "should not be NULL");
|
|
646 |
new_handles->set_pop_frame_link(old_handles);
|
|
647 |
thread->set_active_handles(new_handles);
|
|
648 |
jint ret = JNI_OK;
|
|
649 |
DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, ret);
|
|
650 |
return ret;
|
|
651 |
JNI_END
|
|
652 |
|
|
653 |
|
|
654 |
JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result))
|
|
655 |
JNIWrapper("PopLocalFrame");
|
|
656 |
DTRACE_PROBE2(hotspot_jni, PopLocalFrame__entry, env, result);
|
|
657 |
//%note jni_11
|
|
658 |
Handle result_handle(thread, JNIHandles::resolve(result));
|
|
659 |
JNIHandleBlock* old_handles = thread->active_handles();
|
|
660 |
JNIHandleBlock* new_handles = old_handles->pop_frame_link();
|
|
661 |
if (new_handles != NULL) {
|
|
662 |
// As a sanity check we only release the handle blocks if the pop_frame_link is not NULL.
|
|
663 |
// This way code will still work if PopLocalFrame is called without a corresponding
|
|
664 |
// PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise
|
|
665 |
// the release_block call will release the blocks.
|
|
666 |
thread->set_active_handles(new_handles);
|
|
667 |
old_handles->set_pop_frame_link(NULL); // clear link we won't release new_handles below
|
|
668 |
JNIHandleBlock::release_block(old_handles, thread); // may block
|
|
669 |
result = JNIHandles::make_local(thread, result_handle());
|
|
670 |
}
|
|
671 |
DTRACE_PROBE1(hotspot_jni, PopLocalFrame__return, result);
|
|
672 |
return result;
|
|
673 |
JNI_END
|
|
674 |
|
|
675 |
|
|
676 |
JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref))
|
|
677 |
JNIWrapper("NewGlobalRef");
|
|
678 |
DTRACE_PROBE2(hotspot_jni, NewGlobalRef__entry, env, ref);
|
|
679 |
Handle ref_handle(thread, JNIHandles::resolve(ref));
|
|
680 |
jobject ret = JNIHandles::make_global(ref_handle);
|
|
681 |
DTRACE_PROBE1(hotspot_jni, NewGlobalRef__return, ret);
|
|
682 |
return ret;
|
|
683 |
JNI_END
|
|
684 |
|
|
685 |
// Must be JNI_ENTRY (with HandleMark)
|
|
686 |
JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref))
|
|
687 |
JNIWrapper("DeleteGlobalRef");
|
|
688 |
DTRACE_PROBE2(hotspot_jni, DeleteGlobalRef__entry, env, ref);
|
|
689 |
JNIHandles::destroy_global(ref);
|
|
690 |
DTRACE_PROBE(hotspot_jni, DeleteGlobalRef__return);
|
|
691 |
JNI_END
|
|
692 |
|
|
693 |
JNI_QUICK_ENTRY(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj))
|
|
694 |
JNIWrapper("DeleteLocalRef");
|
|
695 |
DTRACE_PROBE2(hotspot_jni, DeleteLocalRef__entry, env, obj);
|
|
696 |
JNIHandles::destroy_local(obj);
|
|
697 |
DTRACE_PROBE(hotspot_jni, DeleteLocalRef__return);
|
|
698 |
JNI_END
|
|
699 |
|
|
700 |
JNI_QUICK_ENTRY(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2))
|
|
701 |
JNIWrapper("IsSameObject");
|
|
702 |
DTRACE_PROBE3(hotspot_jni, IsSameObject__entry, env, r1, r2);
|
|
703 |
oop a = JNIHandles::resolve(r1);
|
|
704 |
oop b = JNIHandles::resolve(r2);
|
|
705 |
jboolean ret = (a == b) ? JNI_TRUE : JNI_FALSE;
|
|
706 |
DTRACE_PROBE1(hotspot_jni, IsSameObject__return, ret);
|
|
707 |
return ret;
|
|
708 |
JNI_END
|
|
709 |
|
|
710 |
|
|
711 |
JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref))
|
|
712 |
JNIWrapper("NewLocalRef");
|
|
713 |
DTRACE_PROBE2(hotspot_jni, NewLocalRef__entry, env, ref);
|
|
714 |
jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref));
|
|
715 |
DTRACE_PROBE1(hotspot_jni, NewLocalRef__return, ret);
|
|
716 |
return ret;
|
|
717 |
JNI_END
|
|
718 |
|
|
719 |
JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity))
|
|
720 |
JNIWrapper("EnsureLocalCapacity");
|
|
721 |
DTRACE_PROBE2(hotspot_jni, EnsureLocalCapacity__entry, env, capacity);
|
|
722 |
jint ret;
|
|
723 |
if (capacity >= 0 && capacity <= MAX_REASONABLE_LOCAL_CAPACITY) {
|
|
724 |
ret = JNI_OK;
|
|
725 |
} else {
|
|
726 |
ret = JNI_ERR;
|
|
727 |
}
|
|
728 |
DTRACE_PROBE1(hotspot_jni, EnsureLocalCapacity__return, ret);
|
|
729 |
return ret;
|
|
730 |
JNI_END
|
|
731 |
|
|
732 |
// Return the Handle Type
|
|
733 |
JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj))
|
|
734 |
JNIWrapper("GetObjectRefType");
|
|
735 |
DTRACE_PROBE2(hotspot_jni, GetObjectRefType__entry, env, obj);
|
|
736 |
jobjectRefType ret;
|
|
737 |
if (JNIHandles::is_local_handle(thread, obj) ||
|
|
738 |
JNIHandles::is_frame_handle(thread, obj))
|
|
739 |
ret = JNILocalRefType;
|
|
740 |
else if (JNIHandles::is_global_handle(obj))
|
|
741 |
ret = JNIGlobalRefType;
|
|
742 |
else if (JNIHandles::is_weak_global_handle(obj))
|
|
743 |
ret = JNIWeakGlobalRefType;
|
|
744 |
else
|
|
745 |
ret = JNIInvalidRefType;
|
|
746 |
DTRACE_PROBE1(hotspot_jni, GetObjectRefType__return, ret);
|
|
747 |
return ret;
|
|
748 |
JNI_END
|
|
749 |
|
|
750 |
|
|
751 |
class JNI_ArgumentPusher : public SignatureIterator {
|
|
752 |
protected:
|
|
753 |
JavaCallArguments* _arguments;
|
|
754 |
|
|
755 |
virtual void get_bool () = 0;
|
|
756 |
virtual void get_char () = 0;
|
|
757 |
virtual void get_short () = 0;
|
|
758 |
virtual void get_byte () = 0;
|
|
759 |
virtual void get_int () = 0;
|
|
760 |
virtual void get_long () = 0;
|
|
761 |
virtual void get_float () = 0;
|
|
762 |
virtual void get_double () = 0;
|
|
763 |
virtual void get_object () = 0;
|
|
764 |
|
|
765 |
JNI_ArgumentPusher(Thread *thread, symbolOop signature)
|
|
766 |
: SignatureIterator(thread, signature) {
|
|
767 |
this->_return_type = T_ILLEGAL;
|
|
768 |
_arguments = NULL;
|
|
769 |
}
|
|
770 |
|
|
771 |
public:
|
|
772 |
virtual void iterate( uint64_t fingerprint ) = 0;
|
|
773 |
|
|
774 |
void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; }
|
|
775 |
|
|
776 |
inline void do_bool() { if (!is_return_type()) get_bool(); }
|
|
777 |
inline void do_char() { if (!is_return_type()) get_char(); }
|
|
778 |
inline void do_short() { if (!is_return_type()) get_short(); }
|
|
779 |
inline void do_byte() { if (!is_return_type()) get_byte(); }
|
|
780 |
inline void do_int() { if (!is_return_type()) get_int(); }
|
|
781 |
inline void do_long() { if (!is_return_type()) get_long(); }
|
|
782 |
inline void do_float() { if (!is_return_type()) get_float(); }
|
|
783 |
inline void do_double() { if (!is_return_type()) get_double(); }
|
|
784 |
inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); }
|
|
785 |
inline void do_array(int begin, int end) { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array
|
|
786 |
inline void do_void() { }
|
|
787 |
|
|
788 |
JavaCallArguments* arguments() { return _arguments; }
|
|
789 |
void push_receiver(Handle h) { _arguments->push_oop(h); }
|
|
790 |
};
|
|
791 |
|
|
792 |
|
|
793 |
class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher {
|
|
794 |
protected:
|
|
795 |
va_list _ap;
|
|
796 |
|
|
797 |
inline void get_bool() { _arguments->push_int(va_arg(_ap, jint)); } // bool is coerced to int when using va_arg
|
|
798 |
inline void get_char() { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg
|
|
799 |
inline void get_short() { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg
|
|
800 |
inline void get_byte() { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg
|
|
801 |
inline void get_int() { _arguments->push_int(va_arg(_ap, jint)); }
|
|
802 |
|
|
803 |
// each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests
|
|
804 |
|
|
805 |
inline void get_long() { _arguments->push_long(va_arg(_ap, jlong)); }
|
|
806 |
inline void get_float() { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg
|
|
807 |
inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); }
|
|
808 |
inline void get_object() { jobject l = va_arg(_ap, jobject);
|
|
809 |
_arguments->push_oop(Handle((oop *)l, false)); }
|
|
810 |
|
|
811 |
inline void set_ap(va_list rap) {
|
|
812 |
#ifdef va_copy
|
|
813 |
va_copy(_ap, rap);
|
|
814 |
#elif defined (__va_copy)
|
|
815 |
__va_copy(_ap, rap);
|
|
816 |
#else
|
|
817 |
_ap = rap;
|
|
818 |
#endif
|
|
819 |
}
|
|
820 |
|
|
821 |
public:
|
|
822 |
JNI_ArgumentPusherVaArg(Thread *thread, symbolOop signature, va_list rap)
|
|
823 |
: JNI_ArgumentPusher(thread, signature) {
|
|
824 |
set_ap(rap);
|
|
825 |
}
|
|
826 |
JNI_ArgumentPusherVaArg(Thread *thread, jmethodID method_id, va_list rap)
|
|
827 |
: JNI_ArgumentPusher(thread, JNIHandles::resolve_jmethod_id(method_id)->signature()) {
|
|
828 |
set_ap(rap);
|
|
829 |
}
|
|
830 |
|
|
831 |
// Optimized path if we have the bitvector form of signature
|
|
832 |
void iterate( uint64_t fingerprint ) {
|
|
833 |
if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments
|
|
834 |
else {
|
|
835 |
_return_type = (BasicType)((fingerprint >> static_feature_size) &
|
|
836 |
result_feature_mask);
|
|
837 |
|
|
838 |
assert(fingerprint, "Fingerprint should not be 0");
|
|
839 |
fingerprint = fingerprint >> (static_feature_size + result_feature_size);
|
|
840 |
while ( 1 ) {
|
|
841 |
switch ( fingerprint & parameter_feature_mask ) {
|
|
842 |
case bool_parm:
|
|
843 |
case char_parm:
|
|
844 |
case short_parm:
|
|
845 |
case byte_parm:
|
|
846 |
case int_parm:
|
|
847 |
get_int();
|
|
848 |
break;
|
|
849 |
case obj_parm:
|
|
850 |
get_object();
|
|
851 |
break;
|
|
852 |
case long_parm:
|
|
853 |
get_long();
|
|
854 |
break;
|
|
855 |
case float_parm:
|
|
856 |
get_float();
|
|
857 |
break;
|
|
858 |
case double_parm:
|
|
859 |
get_double();
|
|
860 |
break;
|
|
861 |
case done_parm:
|
|
862 |
return;
|
|
863 |
break;
|
|
864 |
default:
|
|
865 |
ShouldNotReachHere();
|
|
866 |
break;
|
|
867 |
}
|
|
868 |
fingerprint >>= parameter_feature_size;
|
|
869 |
}
|
|
870 |
}
|
|
871 |
}
|
|
872 |
};
|
|
873 |
|
|
874 |
|
|
875 |
class JNI_ArgumentPusherArray : public JNI_ArgumentPusher {
|
|
876 |
protected:
|
|
877 |
const jvalue *_ap;
|
|
878 |
|
|
879 |
inline void get_bool() { _arguments->push_int((jint)(_ap++)->z); }
|
|
880 |
inline void get_char() { _arguments->push_int((jint)(_ap++)->c); }
|
|
881 |
inline void get_short() { _arguments->push_int((jint)(_ap++)->s); }
|
|
882 |
inline void get_byte() { _arguments->push_int((jint)(_ap++)->b); }
|
|
883 |
inline void get_int() { _arguments->push_int((jint)(_ap++)->i); }
|
|
884 |
|
|
885 |
inline void get_long() { _arguments->push_long((_ap++)->j); }
|
|
886 |
inline void get_float() { _arguments->push_float((_ap++)->f); }
|
|
887 |
inline void get_double() { _arguments->push_double((_ap++)->d);}
|
|
888 |
inline void get_object() { _arguments->push_oop(Handle((oop *)(_ap++)->l, false)); }
|
|
889 |
|
|
890 |
inline void set_ap(const jvalue *rap) { _ap = rap; }
|
|
891 |
|
|
892 |
public:
|
|
893 |
JNI_ArgumentPusherArray(Thread *thread, symbolOop signature, const jvalue *rap)
|
|
894 |
: JNI_ArgumentPusher(thread, signature) {
|
|
895 |
set_ap(rap);
|
|
896 |
}
|
|
897 |
JNI_ArgumentPusherArray(Thread *thread, jmethodID method_id, const jvalue *rap)
|
|
898 |
: JNI_ArgumentPusher(thread, JNIHandles::resolve_jmethod_id(method_id)->signature()) {
|
|
899 |
set_ap(rap);
|
|
900 |
}
|
|
901 |
|
|
902 |
// Optimized path if we have the bitvector form of signature
|
|
903 |
void iterate( uint64_t fingerprint ) {
|
|
904 |
if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments
|
|
905 |
else {
|
|
906 |
_return_type = (BasicType)((fingerprint >> static_feature_size) &
|
|
907 |
result_feature_mask);
|
|
908 |
assert(fingerprint, "Fingerprint should not be 0");
|
|
909 |
fingerprint = fingerprint >> (static_feature_size + result_feature_size);
|
|
910 |
while ( 1 ) {
|
|
911 |
switch ( fingerprint & parameter_feature_mask ) {
|
|
912 |
case bool_parm:
|
|
913 |
get_bool();
|
|
914 |
break;
|
|
915 |
case char_parm:
|
|
916 |
get_char();
|
|
917 |
break;
|
|
918 |
case short_parm:
|
|
919 |
get_short();
|
|
920 |
break;
|
|
921 |
case byte_parm:
|
|
922 |
get_byte();
|
|
923 |
break;
|
|
924 |
case int_parm:
|
|
925 |
get_int();
|
|
926 |
break;
|
|
927 |
case obj_parm:
|
|
928 |
get_object();
|
|
929 |
break;
|
|
930 |
case long_parm:
|
|
931 |
get_long();
|
|
932 |
break;
|
|
933 |
case float_parm:
|
|
934 |
get_float();
|
|
935 |
break;
|
|
936 |
case double_parm:
|
|
937 |
get_double();
|
|
938 |
break;
|
|
939 |
case done_parm:
|
|
940 |
return;
|
|
941 |
break;
|
|
942 |
default:
|
|
943 |
ShouldNotReachHere();
|
|
944 |
break;
|
|
945 |
}
|
|
946 |
fingerprint >>= parameter_feature_size;
|
|
947 |
}
|
|
948 |
}
|
|
949 |
}
|
|
950 |
};
|
|
951 |
|
|
952 |
|
|
953 |
enum JNICallType {
|
|
954 |
JNI_STATIC,
|
|
955 |
JNI_VIRTUAL,
|
|
956 |
JNI_NONVIRTUAL
|
|
957 |
};
|
|
958 |
|
|
959 |
static methodHandle jni_resolve_interface_call(Handle recv, methodHandle method, TRAPS) {
|
|
960 |
assert(!method.is_null() , "method should not be null");
|
|
961 |
|
|
962 |
KlassHandle recv_klass; // Default to NULL (use of ?: can confuse gcc)
|
|
963 |
if (recv.not_null()) recv_klass = KlassHandle(THREAD, recv->klass());
|
|
964 |
KlassHandle spec_klass (THREAD, method->method_holder());
|
|
965 |
symbolHandle name (THREAD, method->name());
|
|
966 |
symbolHandle signature (THREAD, method->signature());
|
|
967 |
CallInfo info;
|
|
968 |
LinkResolver::resolve_interface_call(info, recv, recv_klass, spec_klass, name, signature, KlassHandle(), false, true, CHECK_(methodHandle()));
|
|
969 |
return info.selected_method();
|
|
970 |
}
|
|
971 |
|
|
972 |
static methodHandle jni_resolve_virtual_call(Handle recv, methodHandle method, TRAPS) {
|
|
973 |
assert(!method.is_null() , "method should not be null");
|
|
974 |
|
|
975 |
KlassHandle recv_klass; // Default to NULL (use of ?: can confuse gcc)
|
|
976 |
if (recv.not_null()) recv_klass = KlassHandle(THREAD, recv->klass());
|
|
977 |
KlassHandle spec_klass (THREAD, method->method_holder());
|
|
978 |
symbolHandle name (THREAD, method->name());
|
|
979 |
symbolHandle signature (THREAD, method->signature());
|
|
980 |
CallInfo info;
|
|
981 |
LinkResolver::resolve_virtual_call(info, recv, recv_klass, spec_klass, name, signature, KlassHandle(), false, true, CHECK_(methodHandle()));
|
|
982 |
return info.selected_method();
|
|
983 |
}
|
|
984 |
|
|
985 |
|
|
986 |
|
|
987 |
static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
|
|
988 |
methodHandle method(THREAD, JNIHandles::resolve_jmethod_id(method_id));
|
|
989 |
|
|
990 |
// Create object to hold arguments for the JavaCall, and associate it with
|
|
991 |
// the jni parser
|
|
992 |
ResourceMark rm(THREAD);
|
|
993 |
int number_of_parameters = method->size_of_parameters();
|
|
994 |
JavaCallArguments java_args(number_of_parameters);
|
|
995 |
args->set_java_argument_object(&java_args);
|
|
996 |
|
|
997 |
assert(method->is_static(), "method should be static");
|
|
998 |
|
|
999 |
// Fill out JavaCallArguments object
|
|
1000 |
args->iterate( Fingerprinter(THREAD, method).fingerprint() );
|
|
1001 |
// Initialize result type
|
|
1002 |
result->set_type(args->get_ret_type());
|
|
1003 |
|
|
1004 |
// Invoke the method. Result is returned as oop.
|
|
1005 |
JavaCalls::call(result, method, &java_args, CHECK);
|
|
1006 |
|
|
1007 |
// Convert result
|
|
1008 |
if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
|
|
1009 |
result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
|
|
1010 |
}
|
|
1011 |
}
|
|
1012 |
|
|
1013 |
|
|
1014 |
static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
|
|
1015 |
oop recv = JNIHandles::resolve(receiver);
|
|
1016 |
if (recv == NULL) {
|
|
1017 |
THROW(vmSymbols::java_lang_NullPointerException());
|
|
1018 |
}
|
|
1019 |
Handle h_recv(THREAD, recv);
|
|
1020 |
|
|
1021 |
int number_of_parameters;
|
|
1022 |
methodOop selected_method;
|
|
1023 |
{
|
|
1024 |
methodOop m = JNIHandles::resolve_jmethod_id(method_id);
|
|
1025 |
number_of_parameters = m->size_of_parameters();
|
|
1026 |
klassOop holder = m->method_holder();
|
|
1027 |
if (!(Klass::cast(holder))->is_interface()) {
|
|
1028 |
// non-interface call -- for that little speed boost, don't handlize
|
|
1029 |
debug_only(No_Safepoint_Verifier nosafepoint;)
|
|
1030 |
if (call_type == JNI_VIRTUAL) {
|
|
1031 |
// jni_GetMethodID makes sure class is linked and initialized
|
|
1032 |
// so m should have a valid vtable index.
|
|
1033 |
int vtbl_index = m->vtable_index();
|
|
1034 |
if (vtbl_index != methodOopDesc::nonvirtual_vtable_index) {
|
|
1035 |
klassOop k = h_recv->klass();
|
|
1036 |
// k might be an arrayKlassOop but all vtables start at
|
|
1037 |
// the same place. The cast is to avoid virtual call and assertion.
|
|
1038 |
instanceKlass *ik = (instanceKlass*)k->klass_part();
|
|
1039 |
selected_method = ik->method_at_vtable(vtbl_index);
|
|
1040 |
} else {
|
|
1041 |
// final method
|
|
1042 |
selected_method = m;
|
|
1043 |
}
|
|
1044 |
} else {
|
|
1045 |
// JNI_NONVIRTUAL call
|
|
1046 |
selected_method = m;
|
|
1047 |
}
|
|
1048 |
} else {
|
|
1049 |
// interface call
|
|
1050 |
KlassHandle h_holder(THREAD, holder);
|
|
1051 |
|
|
1052 |
int itbl_index = m->cached_itable_index();
|
|
1053 |
if (itbl_index == -1) {
|
|
1054 |
itbl_index = klassItable::compute_itable_index(m);
|
|
1055 |
m->set_cached_itable_index(itbl_index);
|
|
1056 |
// the above may have grabbed a lock, 'm' and anything non-handlized can't be used again
|
|
1057 |
}
|
|
1058 |
klassOop k = h_recv->klass();
|
|
1059 |
selected_method = instanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK);
|
|
1060 |
}
|
|
1061 |
}
|
|
1062 |
|
|
1063 |
methodHandle method(THREAD, selected_method);
|
|
1064 |
|
|
1065 |
// Create object to hold arguments for the JavaCall, and associate it with
|
|
1066 |
// the jni parser
|
|
1067 |
ResourceMark rm(THREAD);
|
|
1068 |
JavaCallArguments java_args(number_of_parameters);
|
|
1069 |
args->set_java_argument_object(&java_args);
|
|
1070 |
|
|
1071 |
// handle arguments
|
|
1072 |
assert(!method->is_static(), "method should not be static");
|
|
1073 |
args->push_receiver(h_recv); // Push jobject handle
|
|
1074 |
|
|
1075 |
// Fill out JavaCallArguments object
|
|
1076 |
args->iterate( Fingerprinter(THREAD, method).fingerprint() );
|
|
1077 |
// Initialize result type
|
|
1078 |
result->set_type(args->get_ret_type());
|
|
1079 |
|
|
1080 |
// Invoke the method. Result is returned as oop.
|
|
1081 |
JavaCalls::call(result, method, &java_args, CHECK);
|
|
1082 |
|
|
1083 |
// Convert result
|
|
1084 |
if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
|
|
1085 |
result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
|
|
1086 |
}
|
|
1087 |
}
|
|
1088 |
|
|
1089 |
|
|
1090 |
static instanceOop alloc_object(jclass clazz, TRAPS) {
|
|
1091 |
KlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
|
|
1092 |
Klass::cast(k())->check_valid_for_instantiation(false, CHECK_NULL);
|
|
1093 |
instanceKlass::cast(k())->initialize(CHECK_NULL);
|
|
1094 |
instanceOop ih = instanceKlass::cast(k())->allocate_instance(THREAD);
|
|
1095 |
return ih;
|
|
1096 |
}
|
|
1097 |
|
|
1098 |
DT_RETURN_MARK_DECL(AllocObject, jobject);
|
|
1099 |
|
|
1100 |
JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz))
|
|
1101 |
JNIWrapper("AllocObject");
|
|
1102 |
|
|
1103 |
DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz);
|
|
1104 |
jobject ret = NULL;
|
|
1105 |
DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret);
|
|
1106 |
|
|
1107 |
instanceOop i = alloc_object(clazz, CHECK_NULL);
|
|
1108 |
ret = JNIHandles::make_local(env, i);
|
|
1109 |
return ret;
|
|
1110 |
JNI_END
|
|
1111 |
|
|
1112 |
DT_RETURN_MARK_DECL(NewObjectA, jobject);
|
|
1113 |
|
|
1114 |
JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args))
|
|
1115 |
JNIWrapper("NewObjectA");
|
|
1116 |
DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID);
|
|
1117 |
jobject obj = NULL;
|
|
1118 |
DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj);
|
|
1119 |
|
|
1120 |
instanceOop i = alloc_object(clazz, CHECK_NULL);
|
|
1121 |
obj = JNIHandles::make_local(env, i);
|
|
1122 |
JavaValue jvalue(T_VOID);
|
|
1123 |
JNI_ArgumentPusherArray ap(THREAD, methodID, args);
|
|
1124 |
jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
|
|
1125 |
return obj;
|
|
1126 |
JNI_END
|
|
1127 |
|
|
1128 |
DT_RETURN_MARK_DECL(NewObjectV, jobject);
|
|
1129 |
|
|
1130 |
JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args))
|
|
1131 |
JNIWrapper("NewObjectV");
|
|
1132 |
DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID);
|
|
1133 |
jobject obj = NULL;
|
|
1134 |
DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj);
|
|
1135 |
|
|
1136 |
instanceOop i = alloc_object(clazz, CHECK_NULL);
|
|
1137 |
obj = JNIHandles::make_local(env, i);
|
|
1138 |
JavaValue jvalue(T_VOID);
|
|
1139 |
JNI_ArgumentPusherVaArg ap(THREAD, methodID, args);
|
|
1140 |
jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
|
|
1141 |
return obj;
|
|
1142 |
JNI_END
|
|
1143 |
|
|
1144 |
DT_RETURN_MARK_DECL(NewObject, jobject);
|
|
1145 |
|
|
1146 |
JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...))
|
|
1147 |
JNIWrapper("NewObject");
|
|
1148 |
DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID);
|
|
1149 |
jobject obj = NULL;
|
|
1150 |
DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj);
|
|
1151 |
|
|
1152 |
instanceOop i = alloc_object(clazz, CHECK_NULL);
|
|
1153 |
obj = JNIHandles::make_local(env, i);
|
|
1154 |
va_list args;
|
|
1155 |
va_start(args, methodID);
|
|
1156 |
JavaValue jvalue(T_VOID);
|
|
1157 |
JNI_ArgumentPusherVaArg ap(THREAD, methodID, args);
|
|
1158 |
jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
|
|
1159 |
va_end(args);
|
|
1160 |
return obj;
|
|
1161 |
JNI_END
|
|
1162 |
|
|
1163 |
|
|
1164 |
JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj))
|
|
1165 |
JNIWrapper("GetObjectClass");
|
|
1166 |
DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj);
|
|
1167 |
klassOop k = JNIHandles::resolve_non_null(obj)->klass();
|
|
1168 |
jclass ret =
|
|
1169 |
(jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror());
|
|
1170 |
DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret);
|
|
1171 |
return ret;
|
|
1172 |
JNI_END
|
|
1173 |
|
|
1174 |
JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz))
|
|
1175 |
JNIWrapper("IsInstanceOf");
|
|
1176 |
DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz);
|
|
1177 |
jboolean ret = JNI_TRUE;
|
|
1178 |
if (obj != NULL) {
|
|
1179 |
ret = JNI_FALSE;
|
|
1180 |
klassOop k = java_lang_Class::as_klassOop(
|
|
1181 |
JNIHandles::resolve_non_null(clazz));
|
|
1182 |
if (k != NULL) {
|
|
1183 |
ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE;
|
|
1184 |
}
|
|
1185 |
}
|
|
1186 |
DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret);
|
|
1187 |
return ret;
|
|
1188 |
JNI_END
|
|
1189 |
|
|
1190 |
|
|
1191 |
static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str,
|
|
1192 |
const char *sig, bool is_static, TRAPS) {
|
|
1193 |
// %%%% This code should probably just call into a method in the LinkResolver
|
|
1194 |
//
|
|
1195 |
// The class should have been loaded (we have an instance of the class
|
|
1196 |
// passed in) so the method and signature should already be in the symbol
|
|
1197 |
// table. If they're not there, the method doesn't exist.
|
|
1198 |
symbolHandle signature =
|
|
1199 |
symbolHandle(THREAD, SymbolTable::probe(sig, (int)strlen(sig)));
|
|
1200 |
symbolHandle name;
|
|
1201 |
if (name_str == NULL) {
|
|
1202 |
name = vmSymbolHandles::object_initializer_name();
|
|
1203 |
} else {
|
|
1204 |
name = symbolHandle(THREAD,
|
|
1205 |
SymbolTable::probe(name_str, (int)strlen(name_str)));
|
|
1206 |
}
|
|
1207 |
if (name.is_null() || signature.is_null()) {
|
|
1208 |
THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
|
|
1209 |
}
|
|
1210 |
|
|
1211 |
// Throw a NoSuchMethodError exception if we have an instance of a
|
|
1212 |
// primitive java.lang.Class
|
|
1213 |
if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) {
|
|
1214 |
THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
|
|
1215 |
}
|
|
1216 |
|
|
1217 |
KlassHandle klass(THREAD,
|
|
1218 |
java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
|
|
1219 |
|
|
1220 |
// Make sure class is linked and initialized before handing id's out to
|
|
1221 |
// methodOops.
|
|
1222 |
Klass::cast(klass())->initialize(CHECK_NULL);
|
|
1223 |
|
|
1224 |
methodOop m;
|
|
1225 |
if (name() == vmSymbols::object_initializer_name() ||
|
|
1226 |
name() == vmSymbols::class_initializer_name()) {
|
|
1227 |
// Never search superclasses for constructors
|
|
1228 |
if (klass->oop_is_instance()) {
|
|
1229 |
m = instanceKlass::cast(klass())->find_method(name(), signature());
|
|
1230 |
} else {
|
|
1231 |
m = NULL;
|
|
1232 |
}
|
|
1233 |
} else {
|
|
1234 |
m = klass->lookup_method(name(), signature());
|
|
1235 |
// Look up interfaces
|
|
1236 |
if (m == NULL && klass->oop_is_instance()) {
|
|
1237 |
m = instanceKlass::cast(klass())->lookup_method_in_all_interfaces(name(),
|
|
1238 |
signature());
|
|
1239 |
}
|
|
1240 |
}
|
|
1241 |
if (m == NULL || (m->is_static() != is_static)) {
|
|
1242 |
THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
|
|
1243 |
}
|
|
1244 |
return m->jmethod_id();
|
|
1245 |
}
|
|
1246 |
|
|
1247 |
|
|
1248 |
JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz,
|
|
1249 |
const char *name, const char *sig))
|
|
1250 |
JNIWrapper("GetMethodID");
|
|
1251 |
DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig);
|
|
1252 |
jmethodID ret = get_method_id(env, clazz, name, sig, false, thread);
|
|
1253 |
DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret);
|
|
1254 |
return ret;
|
|
1255 |
JNI_END
|
|
1256 |
|
|
1257 |
|
|
1258 |
JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz,
|
|
1259 |
const char *name, const char *sig))
|
|
1260 |
JNIWrapper("GetStaticMethodID");
|
|
1261 |
DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig);
|
|
1262 |
jmethodID ret = get_method_id(env, clazz, name, sig, true, thread);
|
|
1263 |
DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret);
|
|
1264 |
return ret;
|
|
1265 |
JNI_END
|
|
1266 |
|
|
1267 |
|
|
1268 |
|
|
1269 |
//
|
|
1270 |
// Calling Methods
|
|
1271 |
//
|
|
1272 |
|
|
1273 |
|
|
1274 |
#define DEFINE_CALLMETHOD(ResultType, Result, Tag) \
|
|
1275 |
\
|
|
1276 |
DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\
|
|
1277 |
DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\
|
|
1278 |
DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\
|
|
1279 |
\
|
|
1280 |
JNI_ENTRY(ResultType, \
|
|
1281 |
jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
|
|
1282 |
JNIWrapper("Call" XSTR(Result) "Method"); \
|
|
1283 |
\
|
|
1284 |
DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID);\
|
|
1285 |
ResultType ret = 0;\
|
|
1286 |
DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
|
|
1287 |
(const ResultType&)ret);\
|
|
1288 |
\
|
|
1289 |
va_list args; \
|
|
1290 |
va_start(args, methodID); \
|
|
1291 |
JavaValue jvalue(Tag); \
|
|
1292 |
JNI_ArgumentPusherVaArg ap(THREAD, methodID, args); \
|
|
1293 |
jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
|
|
1294 |
va_end(args); \
|
|
1295 |
ret = jvalue.get_##ResultType(); \
|
|
1296 |
return ret;\
|
|
1297 |
JNI_END \
|
|
1298 |
\
|
|
1299 |
\
|
|
1300 |
JNI_ENTRY(ResultType, \
|
|
1301 |
jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
|
|
1302 |
JNIWrapper("Call" XSTR(Result) "MethodV"); \
|
|
1303 |
\
|
|
1304 |
DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID);\
|
|
1305 |
ResultType ret = 0;\
|
|
1306 |
DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
|
|
1307 |
(const ResultType&)ret);\
|
|
1308 |
\
|
|
1309 |
JavaValue jvalue(Tag); \
|
|
1310 |
JNI_ArgumentPusherVaArg ap(THREAD, methodID, args); \
|
|
1311 |
jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
|
|
1312 |
ret = jvalue.get_##ResultType(); \
|
|
1313 |
return ret;\
|
|
1314 |
JNI_END \
|
|
1315 |
\
|
|
1316 |
\
|
|
1317 |
JNI_ENTRY(ResultType, \
|
|
1318 |
jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
|
|
1319 |
JNIWrapper("Call" XSTR(Result) "MethodA"); \
|
|
1320 |
DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID);\
|
|
1321 |
ResultType ret = 0;\
|
|
1322 |
DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
|
|
1323 |
(const ResultType&)ret);\
|
|
1324 |
\
|
|
1325 |
JavaValue jvalue(Tag); \
|
|
1326 |
JNI_ArgumentPusherArray ap(THREAD, methodID, args); \
|
|
1327 |
jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
|
|
1328 |
ret = jvalue.get_##ResultType(); \
|
|
1329 |
return ret;\
|
|
1330 |
JNI_END
|
|
1331 |
|
|
1332 |
// the runtime type of subword integral basic types is integer
|
|
1333 |
DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN)
|
|
1334 |
DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE)
|
|
1335 |
DEFINE_CALLMETHOD(jchar, Char, T_CHAR)
|
|
1336 |
DEFINE_CALLMETHOD(jshort, Short, T_SHORT)
|
|
1337 |
|
|
1338 |
DEFINE_CALLMETHOD(jobject, Object, T_OBJECT)
|
|
1339 |
DEFINE_CALLMETHOD(jint, Int, T_INT)
|
|
1340 |
DEFINE_CALLMETHOD(jlong, Long, T_LONG)
|
|
1341 |
DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT)
|
|
1342 |
DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE)
|
|
1343 |
|
|
1344 |
DT_VOID_RETURN_MARK_DECL(CallVoidMethod);
|
|
1345 |
DT_VOID_RETURN_MARK_DECL(CallVoidMethodV);
|
|
1346 |
DT_VOID_RETURN_MARK_DECL(CallVoidMethodA);
|
|
1347 |
|
|
1348 |
JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...))
|
|
1349 |
JNIWrapper("CallVoidMethod");
|
|
1350 |
DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID);
|
|
1351 |
DT_VOID_RETURN_MARK(CallVoidMethod);
|
|
1352 |
|
|
1353 |
va_list args;
|
|
1354 |
va_start(args, methodID);
|
|
1355 |
JavaValue jvalue(T_VOID);
|
|
1356 |
JNI_ArgumentPusherVaArg ap(THREAD, methodID, args);
|
|
1357 |
jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
|
|
1358 |
va_end(args);
|
|
1359 |
JNI_END
|
|
1360 |
|
|
1361 |
|
|
1362 |
JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args))
|
|
1363 |
JNIWrapper("CallVoidMethodV");
|
|
1364 |
DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID);
|
|
1365 |
DT_VOID_RETURN_MARK(CallVoidMethodV);
|
|
1366 |
|
|
1367 |
JavaValue jvalue(T_VOID);
|
|
1368 |
JNI_ArgumentPusherVaArg ap(THREAD, methodID, args);
|
|
1369 |
jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
|
|
1370 |
JNI_END
|
|
1371 |
|
|
1372 |
|
|
1373 |
JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args))
|
|
1374 |
JNIWrapper("CallVoidMethodA");
|
|
1375 |
DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID);
|
|
1376 |
DT_VOID_RETURN_MARK(CallVoidMethodA);
|
|
1377 |
|
|
1378 |
JavaValue jvalue(T_VOID);
|
|
1379 |
JNI_ArgumentPusherArray ap(THREAD, methodID, args);
|
|
1380 |
jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
|
|
1381 |
JNI_END
|
|
1382 |
|
|
1383 |
|
|
1384 |
#define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \
|
|
1385 |
\
|
|
1386 |
DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\
|
|
1387 |
DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\
|
|
1388 |
DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\
|
|
1389 |
\
|
|
1390 |
JNI_ENTRY(ResultType, \
|
|
1391 |
jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
|
|
1392 |
JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
|
|
1393 |
\
|
|
1394 |
DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\
|
|
1395 |
ResultType ret;\
|
|
1396 |
DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
|
|
1397 |
(const ResultType&)ret);\
|
|
1398 |
\
|
|
1399 |
va_list args; \
|
|
1400 |
va_start(args, methodID); \
|
|
1401 |
JavaValue jvalue(Tag); \
|
|
1402 |
JNI_ArgumentPusherVaArg ap(THREAD, methodID, args); \
|
|
1403 |
jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
|
|
1404 |
va_end(args); \
|
|
1405 |
ret = jvalue.get_##ResultType(); \
|
|
1406 |
return ret;\
|
|
1407 |
JNI_END \
|
|
1408 |
\
|
|
1409 |
JNI_ENTRY(ResultType, \
|
|
1410 |
jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
|
|
1411 |
JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \
|
|
1412 |
DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\
|
|
1413 |
ResultType ret;\
|
|
1414 |
DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
|
|
1415 |
(const ResultType&)ret);\
|
|
1416 |
\
|
|
1417 |
JavaValue jvalue(Tag); \
|
|
1418 |
JNI_ArgumentPusherVaArg ap(THREAD, methodID, args); \
|
|
1419 |
jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
|
|
1420 |
ret = jvalue.get_##ResultType(); \
|
|
1421 |
return ret;\
|
|
1422 |
JNI_END \
|
|
1423 |
\
|
|
1424 |
JNI_ENTRY(ResultType, \
|
|
1425 |
jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
|
|
1426 |
JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
|
|
1427 |
DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\
|
|
1428 |
ResultType ret;\
|
|
1429 |
DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
|
|
1430 |
(const ResultType&)ret);\
|
|
1431 |
\
|
|
1432 |
JavaValue jvalue(Tag); \
|
|
1433 |
JNI_ArgumentPusherArray ap(THREAD, methodID, args); \
|
|
1434 |
jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
|
|
1435 |
ret = jvalue.get_##ResultType(); \
|
|
1436 |
return ret;\
|
|
1437 |
JNI_END
|
|
1438 |
|
|
1439 |
// the runtime type of subword integral basic types is integer
|
|
1440 |
DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN)
|
|
1441 |
DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE)
|
|
1442 |
DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR)
|
|
1443 |
DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT)
|
|
1444 |
|
|
1445 |
DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT)
|
|
1446 |
DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT)
|
|
1447 |
DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG)
|
|
1448 |
DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT)
|
|
1449 |
DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE)
|
|
1450 |
|
|
1451 |
|
|
1452 |
DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod);
|
|
1453 |
DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV);
|
|
1454 |
DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA);
|
|
1455 |
|
|
1456 |
JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...))
|
|
1457 |
JNIWrapper("CallNonvirtualVoidMethod");
|
|
1458 |
|
|
1459 |
DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry,
|
|
1460 |
env, obj, cls, methodID);
|
|
1461 |
DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod);
|
|
1462 |
|
|
1463 |
va_list args;
|
|
1464 |
va_start(args, methodID);
|
|
1465 |
JavaValue jvalue(T_VOID);
|
|
1466 |
JNI_ArgumentPusherVaArg ap(THREAD, methodID, args);
|
|
1467 |
jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
|
|
1468 |
va_end(args);
|
|
1469 |
JNI_END
|
|
1470 |
|
|
1471 |
|
|
1472 |
JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args))
|
|
1473 |
JNIWrapper("CallNonvirtualVoidMethodV");
|
|
1474 |
|
|
1475 |
DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry,
|
|
1476 |
env, obj, cls, methodID);
|
|
1477 |
DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV);
|
|
1478 |
|
|
1479 |
JavaValue jvalue(T_VOID);
|
|
1480 |
JNI_ArgumentPusherVaArg ap(THREAD, methodID, args);
|
|
1481 |
jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
|
|
1482 |
JNI_END
|
|
1483 |
|
|
1484 |
|
|
1485 |
JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args))
|
|
1486 |
JNIWrapper("CallNonvirtualVoidMethodA");
|
|
1487 |
DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry,
|
|
1488 |
env, obj, cls, methodID);
|
|
1489 |
DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA);
|
|
1490 |
JavaValue jvalue(T_VOID);
|
|
1491 |
JNI_ArgumentPusherArray ap(THREAD, methodID, args);
|
|
1492 |
jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
|
|
1493 |
JNI_END
|
|
1494 |
|
|
1495 |
|
|
1496 |
#define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \
|
|
1497 |
\
|
|
1498 |
DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\
|
|
1499 |
DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\
|
|
1500 |
DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\
|
|
1501 |
\
|
|
1502 |
JNI_ENTRY(ResultType, \
|
|
1503 |
jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
|
|
1504 |
JNIWrapper("CallStatic" XSTR(Result) "Method"); \
|
|
1505 |
\
|
|
1506 |
DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\
|
|
1507 |
ResultType ret = 0;\
|
|
1508 |
DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
|
|
1509 |
(const ResultType&)ret);\
|
|
1510 |
\
|
|
1511 |
va_list args; \
|
|
1512 |
va_start(args, methodID); \
|
|
1513 |
JavaValue jvalue(Tag); \
|
|
1514 |
JNI_ArgumentPusherVaArg ap(THREAD, methodID, args); \
|
|
1515 |
jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
|
|
1516 |
va_end(args); \
|
|
1517 |
ret = jvalue.get_##ResultType(); \
|
|
1518 |
return ret;\
|
|
1519 |
JNI_END \
|
|
1520 |
\
|
|
1521 |
JNI_ENTRY(ResultType, \
|
|
1522 |
jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
|
|
1523 |
JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
|
|
1524 |
DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\
|
|
1525 |
ResultType ret = 0;\
|
|
1526 |
DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
|
|
1527 |
(const ResultType&)ret);\
|
|
1528 |
\
|
|
1529 |
JavaValue jvalue(Tag); \
|
|
1530 |
JNI_ArgumentPusherVaArg ap(THREAD, methodID, args); \
|
|
1531 |
jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
|
|
1532 |
ret = jvalue.get_##ResultType(); \
|
|
1533 |
return ret;\
|
|
1534 |
JNI_END \
|
|
1535 |
\
|
|
1536 |
JNI_ENTRY(ResultType, \
|
|
1537 |
jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
|
|
1538 |
JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
|
|
1539 |
DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\
|
|
1540 |
ResultType ret = 0;\
|
|
1541 |
DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
|
|
1542 |
(const ResultType&)ret);\
|
|
1543 |
\
|
|
1544 |
JavaValue jvalue(Tag); \
|
|
1545 |
JNI_ArgumentPusherArray ap(THREAD, methodID, args); \
|
|
1546 |
jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
|
|
1547 |
ret = jvalue.get_##ResultType(); \
|
|
1548 |
return ret;\
|
|
1549 |
JNI_END
|
|
1550 |
|
|
1551 |
// the runtime type of subword integral basic types is integer
|
|
1552 |
DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN)
|
|
1553 |
DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE)
|
|
1554 |
DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR)
|
|
1555 |
DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT)
|
|
1556 |
|
|
1557 |
DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT)
|
|
1558 |
DEFINE_CALLSTATICMETHOD(jint, Int, T_INT)
|
|
1559 |
DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG)
|
|
1560 |
DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT)
|
|
1561 |
DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE)
|
|
1562 |
|
|
1563 |
|
|
1564 |
DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod);
|
|
1565 |
DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV);
|
|
1566 |
DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA);
|
|
1567 |
|
|
1568 |
JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...))
|
|
1569 |
JNIWrapper("CallStaticVoidMethod");
|
|
1570 |
DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID);
|
|
1571 |
DT_VOID_RETURN_MARK(CallStaticVoidMethod);
|
|
1572 |
|
|
1573 |
va_list args;
|
|
1574 |
va_start(args, methodID);
|
|
1575 |
JavaValue jvalue(T_VOID);
|
|
1576 |
JNI_ArgumentPusherVaArg ap(THREAD, methodID, args);
|
|
1577 |
jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
|
|
1578 |
va_end(args);
|
|
1579 |
JNI_END
|
|
1580 |
|
|
1581 |
|
|
1582 |
JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args))
|
|
1583 |
JNIWrapper("CallStaticVoidMethodV");
|
|
1584 |
DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID);
|
|
1585 |
DT_VOID_RETURN_MARK(CallStaticVoidMethodV);
|
|
1586 |
|
|
1587 |
JavaValue jvalue(T_VOID);
|
|
1588 |
JNI_ArgumentPusherVaArg ap(THREAD, methodID, args);
|
|
1589 |
jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
|
|
1590 |
JNI_END
|
|
1591 |
|
|
1592 |
|
|
1593 |
JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args))
|
|
1594 |
JNIWrapper("CallStaticVoidMethodA");
|
|
1595 |
DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID);
|
|
1596 |
DT_VOID_RETURN_MARK(CallStaticVoidMethodA);
|
|
1597 |
|
|
1598 |
JavaValue jvalue(T_VOID);
|
|
1599 |
JNI_ArgumentPusherArray ap(THREAD, methodID, args);
|
|
1600 |
jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
|
|
1601 |
JNI_END
|
|
1602 |
|
|
1603 |
|
|
1604 |
//
|
|
1605 |
// Accessing Fields
|
|
1606 |
//
|
|
1607 |
|
|
1608 |
|
|
1609 |
DT_RETURN_MARK_DECL(GetFieldID, jfieldID);
|
|
1610 |
|
|
1611 |
JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz,
|
|
1612 |
const char *name, const char *sig))
|
|
1613 |
JNIWrapper("GetFieldID");
|
|
1614 |
DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig);
|
|
1615 |
jfieldID ret = 0;
|
|
1616 |
DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret);
|
|
1617 |
|
|
1618 |
// The class should have been loaded (we have an instance of the class
|
|
1619 |
// passed in) so the field and signature should already be in the symbol
|
|
1620 |
// table. If they're not there, the field doesn't exist.
|
|
1621 |
symbolHandle fieldname =
|
|
1622 |
symbolHandle(THREAD, SymbolTable::probe(name, (int)strlen(name)));
|
|
1623 |
symbolHandle signame =
|
|
1624 |
symbolHandle(THREAD, SymbolTable::probe(sig, (int)strlen(sig)));
|
|
1625 |
if (fieldname.is_null() || signame.is_null()) {
|
|
1626 |
THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
|
|
1627 |
}
|
|
1628 |
KlassHandle k(THREAD,
|
|
1629 |
java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
|
|
1630 |
// Make sure class is initialized before handing id's out to fields
|
|
1631 |
Klass::cast(k())->initialize(CHECK_NULL);
|
|
1632 |
|
|
1633 |
fieldDescriptor fd;
|
|
1634 |
if (!Klass::cast(k())->oop_is_instance() ||
|
|
1635 |
!instanceKlass::cast(k())->find_field(fieldname(), signame(), false, &fd)) {
|
|
1636 |
THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
|
|
1637 |
}
|
|
1638 |
|
|
1639 |
// A jfieldID for a non-static field is simply the offset of the field within the instanceOop
|
|
1640 |
// It may also have hash bits for k, if VerifyJNIFields is turned on.
|
|
1641 |
ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset());
|
|
1642 |
return ret;
|
|
1643 |
JNI_END
|
|
1644 |
|
|
1645 |
|
|
1646 |
JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID))
|
|
1647 |
JNIWrapper("GetObjectField");
|
|
1648 |
DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID);
|
|
1649 |
oop o = JNIHandles::resolve_non_null(obj);
|
|
1650 |
klassOop k = o->klass();
|
|
1651 |
int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
|
|
1652 |
// Keep JVMTI addition small and only check enabled flag here.
|
|
1653 |
// jni_GetField_probe() assumes that is okay to create handles.
|
|
1654 |
if (JvmtiExport::should_post_field_access()) {
|
|
1655 |
o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false);
|
|
1656 |
}
|
|
1657 |
jobject ret = JNIHandles::make_local(env, o->obj_field(offset));
|
|
1658 |
DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret);
|
|
1659 |
return ret;
|
|
1660 |
JNI_END
|
|
1661 |
|
|
1662 |
|
|
1663 |
#define DEFINE_GETFIELD(Return,Fieldname,Result) \
|
|
1664 |
\
|
|
1665 |
DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\
|
|
1666 |
\
|
|
1667 |
JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
|
|
1668 |
JNIWrapper("Get" XSTR(Result) "Field"); \
|
|
1669 |
\
|
|
1670 |
DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\
|
|
1671 |
Return ret = 0;\
|
|
1672 |
DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
|
|
1673 |
\
|
|
1674 |
oop o = JNIHandles::resolve_non_null(obj); \
|
|
1675 |
klassOop k = o->klass(); \
|
|
1676 |
int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
|
|
1677 |
/* Keep JVMTI addition small and only check enabled flag here. */ \
|
|
1678 |
/* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
|
|
1679 |
/* and creates a ResetNoHandleMark. */ \
|
|
1680 |
if (JvmtiExport::should_post_field_access()) { \
|
|
1681 |
o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
|
|
1682 |
} \
|
|
1683 |
ret = o->Fieldname##_field(offset); \
|
|
1684 |
return ret; \
|
|
1685 |
JNI_END
|
|
1686 |
|
|
1687 |
DEFINE_GETFIELD(jboolean, bool, Boolean)
|
|
1688 |
DEFINE_GETFIELD(jbyte, byte, Byte)
|
|
1689 |
DEFINE_GETFIELD(jchar, char, Char)
|
|
1690 |
DEFINE_GETFIELD(jshort, short, Short)
|
|
1691 |
DEFINE_GETFIELD(jint, int, Int)
|
|
1692 |
DEFINE_GETFIELD(jlong, long, Long)
|
|
1693 |
DEFINE_GETFIELD(jfloat, float, Float)
|
|
1694 |
DEFINE_GETFIELD(jdouble, double, Double)
|
|
1695 |
|
|
1696 |
address jni_GetBooleanField_addr() {
|
|
1697 |
return (address)jni_GetBooleanField;
|
|
1698 |
}
|
|
1699 |
address jni_GetByteField_addr() {
|
|
1700 |
return (address)jni_GetByteField;
|
|
1701 |
}
|
|
1702 |
address jni_GetCharField_addr() {
|
|
1703 |
return (address)jni_GetCharField;
|
|
1704 |
}
|
|
1705 |
address jni_GetShortField_addr() {
|
|
1706 |
return (address)jni_GetShortField;
|
|
1707 |
}
|
|
1708 |
address jni_GetIntField_addr() {
|
|
1709 |
return (address)jni_GetIntField;
|
|
1710 |
}
|
|
1711 |
address jni_GetLongField_addr() {
|
|
1712 |
return (address)jni_GetLongField;
|
|
1713 |
}
|
|
1714 |
address jni_GetFloatField_addr() {
|
|
1715 |
return (address)jni_GetFloatField;
|
|
1716 |
}
|
|
1717 |
address jni_GetDoubleField_addr() {
|
|
1718 |
return (address)jni_GetDoubleField;
|
|
1719 |
}
|
|
1720 |
|
|
1721 |
JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value))
|
|
1722 |
JNIWrapper("SetObjectField");
|
|
1723 |
DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value);
|
|
1724 |
oop o = JNIHandles::resolve_non_null(obj);
|
|
1725 |
klassOop k = o->klass();
|
|
1726 |
int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
|
|
1727 |
// Keep JVMTI addition small and only check enabled flag here.
|
|
1728 |
// jni_SetField_probe_nh() assumes that is not okay to create handles
|
|
1729 |
// and creates a ResetNoHandleMark.
|
|
1730 |
if (JvmtiExport::should_post_field_modification()) {
|
|
1731 |
jvalue field_value;
|
|
1732 |
field_value.l = value;
|
|
1733 |
o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value);
|
|
1734 |
}
|
|
1735 |
o->obj_field_put(offset, JNIHandles::resolve(value));
|
|
1736 |
DTRACE_PROBE(hotspot_jni, SetObjectField__return);
|
|
1737 |
JNI_END
|
|
1738 |
|
|
1739 |
#define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \
|
|
1740 |
\
|
|
1741 |
JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
|
|
1742 |
JNIWrapper("Set" XSTR(Result) "Field"); \
|
|
1743 |
\
|
|
1744 |
HS_DTRACE_PROBE_CDECL_N(hotspot_jni, Set##Result##Field__entry, \
|
|
1745 |
( JNIEnv*, jobject, jfieldID FP_SELECT_##Result(COMMA Argument,/*empty*/) ) ); \
|
|
1746 |
HS_DTRACE_PROBE_N(hotspot_jni, Set##Result##Field__entry, \
|
|
1747 |
( env, obj, fieldID FP_SELECT_##Result(COMMA value,/*empty*/) ) ); \
|
|
1748 |
\
|
|
1749 |
oop o = JNIHandles::resolve_non_null(obj); \
|
|
1750 |
klassOop k = o->klass(); \
|
|
1751 |
int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
|
|
1752 |
/* Keep JVMTI addition small and only check enabled flag here. */ \
|
|
1753 |
/* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
|
|
1754 |
/* and creates a ResetNoHandleMark. */ \
|
|
1755 |
if (JvmtiExport::should_post_field_modification()) { \
|
|
1756 |
jvalue field_value; \
|
|
1757 |
field_value.unionType = value; \
|
|
1758 |
o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
|
|
1759 |
} \
|
|
1760 |
o->Fieldname##_field_put(offset, value); \
|
|
1761 |
DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\
|
|
1762 |
JNI_END
|
|
1763 |
|
|
1764 |
DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z)
|
|
1765 |
DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b)
|
|
1766 |
DEFINE_SETFIELD(jchar, char, Char, 'C', c)
|
|
1767 |
DEFINE_SETFIELD(jshort, short, Short, 'S', s)
|
|
1768 |
DEFINE_SETFIELD(jint, int, Int, 'I', i)
|
|
1769 |
DEFINE_SETFIELD(jlong, long, Long, 'J', j)
|
|
1770 |
DEFINE_SETFIELD(jfloat, float, Float, 'F', f)
|
|
1771 |
DEFINE_SETFIELD(jdouble, double, Double, 'D', d)
|
|
1772 |
|
|
1773 |
DT_RETURN_MARK_DECL(ToReflectedField, jobject);
|
|
1774 |
|
|
1775 |
JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic))
|
|
1776 |
JNIWrapper("ToReflectedField");
|
|
1777 |
DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry,
|
|
1778 |
env, cls, fieldID, isStatic);
|
|
1779 |
jobject ret = NULL;
|
|
1780 |
DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret);
|
|
1781 |
|
|
1782 |
fieldDescriptor fd;
|
|
1783 |
bool found = false;
|
|
1784 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
1785 |
|
|
1786 |
assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID");
|
|
1787 |
|
|
1788 |
if (isStatic) {
|
|
1789 |
// Static field. The fieldID a JNIid specifying the field holder and the offset within the klassOop.
|
|
1790 |
JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
|
|
1791 |
assert(id->is_static_field_id(), "invalid static field id");
|
|
1792 |
found = instanceKlass::cast(id->holder())->find_local_field_from_offset(id->offset(), true, &fd);
|
|
1793 |
} else {
|
|
1794 |
// Non-static field. The fieldID is really the offset of the field within the instanceOop.
|
|
1795 |
int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
|
|
1796 |
found = instanceKlass::cast(k)->find_field_from_offset(offset, false, &fd);
|
|
1797 |
}
|
|
1798 |
assert(found, "bad fieldID passed into jni_ToReflectedField");
|
|
1799 |
oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL);
|
|
1800 |
ret = JNIHandles::make_local(env, reflected);
|
|
1801 |
return ret;
|
|
1802 |
JNI_END
|
|
1803 |
|
|
1804 |
|
|
1805 |
//
|
|
1806 |
// Accessing Static Fields
|
|
1807 |
//
|
|
1808 |
DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID);
|
|
1809 |
|
|
1810 |
JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz,
|
|
1811 |
const char *name, const char *sig))
|
|
1812 |
JNIWrapper("GetStaticFieldID");
|
|
1813 |
DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig);
|
|
1814 |
jfieldID ret = NULL;
|
|
1815 |
DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret);
|
|
1816 |
|
|
1817 |
// The class should have been loaded (we have an instance of the class
|
|
1818 |
// passed in) so the field and signature should already be in the symbol
|
|
1819 |
// table. If they're not there, the field doesn't exist.
|
|
1820 |
symbolHandle fieldname =
|
|
1821 |
symbolHandle(THREAD, SymbolTable::probe(name, (int)strlen(name)));
|
|
1822 |
symbolHandle signame =
|
|
1823 |
symbolHandle(THREAD, SymbolTable::probe(sig, (int)strlen(sig)));
|
|
1824 |
if (fieldname.is_null() || signame.is_null()) {
|
|
1825 |
THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
|
|
1826 |
}
|
|
1827 |
KlassHandle k(THREAD,
|
|
1828 |
java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
|
|
1829 |
// Make sure class is initialized before handing id's out to static fields
|
|
1830 |
Klass::cast(k())->initialize(CHECK_NULL);
|
|
1831 |
|
|
1832 |
fieldDescriptor fd;
|
|
1833 |
if (!Klass::cast(k())->oop_is_instance() ||
|
|
1834 |
!instanceKlass::cast(k())->find_field(fieldname(), signame(), true, &fd)) {
|
|
1835 |
THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
|
|
1836 |
}
|
|
1837 |
|
|
1838 |
// A jfieldID for a static field is a JNIid specifying the field holder and the offset within the klassOop
|
|
1839 |
JNIid* id = instanceKlass::cast(fd.field_holder())->jni_id_for(fd.offset());
|
|
1840 |
debug_only(id->set_is_static_field_id();)
|
|
1841 |
|
|
1842 |
debug_only(int first_offset = instanceKlass::cast(fd.field_holder())->offset_of_static_fields();)
|
|
1843 |
debug_only(int end_offset = first_offset + (instanceKlass::cast(fd.field_holder())->static_field_size() * wordSize);)
|
|
1844 |
assert(id->offset() >= first_offset && id->offset() < end_offset, "invalid static field offset");
|
|
1845 |
|
|
1846 |
ret = jfieldIDWorkaround::to_static_jfieldID(id);
|
|
1847 |
return ret;
|
|
1848 |
JNI_END
|
|
1849 |
|
|
1850 |
|
|
1851 |
JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID))
|
|
1852 |
JNIWrapper("GetStaticObjectField");
|
|
1853 |
DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID);
|
|
1854 |
#ifndef JNICHECK_KERNEL
|
|
1855 |
DEBUG_ONLY(klassOop param_k = jniCheck::validate_class(thread, clazz);)
|
|
1856 |
#endif // JNICHECK_KERNEL
|
|
1857 |
JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
|
|
1858 |
assert(id->is_static_field_id(), "invalid static field id");
|
|
1859 |
// Keep JVMTI addition small and only check enabled flag here.
|
|
1860 |
// jni_GetField_probe() assumes that is okay to create handles.
|
|
1861 |
if (JvmtiExport::should_post_field_access()) {
|
|
1862 |
JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true);
|
|
1863 |
}
|
|
1864 |
jobject ret = JNIHandles::make_local(id->holder()->obj_field(id->offset()));
|
|
1865 |
DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret);
|
|
1866 |
return ret;
|
|
1867 |
JNI_END
|
|
1868 |
|
|
1869 |
#define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \
|
|
1870 |
\
|
|
1871 |
DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\
|
|
1872 |
\
|
|
1873 |
JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
|
|
1874 |
JNIWrapper("GetStatic" XSTR(Result) "Field"); \
|
|
1875 |
DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\
|
|
1876 |
Return ret = 0;\
|
|
1877 |
DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
|
|
1878 |
(const Return&)ret);\
|
|
1879 |
JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
|
|
1880 |
assert(id->is_static_field_id(), "invalid static field id"); \
|
|
1881 |
/* Keep JVMTI addition small and only check enabled flag here. */ \
|
|
1882 |
/* jni_GetField_probe() assumes that is okay to create handles. */ \
|
|
1883 |
if (JvmtiExport::should_post_field_access()) { \
|
|
1884 |
JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
|
|
1885 |
} \
|
|
1886 |
ret = id->holder()-> Fieldname##_field (id->offset()); \
|
|
1887 |
return ret;\
|
|
1888 |
JNI_END
|
|
1889 |
|
|
1890 |
DEFINE_GETSTATICFIELD(jboolean, bool, Boolean)
|
|
1891 |
DEFINE_GETSTATICFIELD(jbyte, byte, Byte)
|
|
1892 |
DEFINE_GETSTATICFIELD(jchar, char, Char)
|
|
1893 |
DEFINE_GETSTATICFIELD(jshort, short, Short)
|
|
1894 |
DEFINE_GETSTATICFIELD(jint, int, Int)
|
|
1895 |
DEFINE_GETSTATICFIELD(jlong, long, Long)
|
|
1896 |
DEFINE_GETSTATICFIELD(jfloat, float, Float)
|
|
1897 |
DEFINE_GETSTATICFIELD(jdouble, double, Double)
|
|
1898 |
|
|
1899 |
|
|
1900 |
JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value))
|
|
1901 |
JNIWrapper("SetStaticObjectField");
|
|
1902 |
DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value);
|
|
1903 |
JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
|
|
1904 |
assert(id->is_static_field_id(), "invalid static field id");
|
|
1905 |
// Keep JVMTI addition small and only check enabled flag here.
|
|
1906 |
// jni_SetField_probe() assumes that is okay to create handles.
|
|
1907 |
if (JvmtiExport::should_post_field_modification()) {
|
|
1908 |
jvalue field_value;
|
|
1909 |
field_value.l = value;
|
|
1910 |
JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value);
|
|
1911 |
}
|
|
1912 |
id->holder()->obj_field_put(id->offset(), JNIHandles::resolve(value));
|
|
1913 |
DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return);
|
|
1914 |
JNI_END
|
|
1915 |
|
|
1916 |
|
|
1917 |
#define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \
|
|
1918 |
\
|
|
1919 |
JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
|
|
1920 |
JNIWrapper("SetStatic" XSTR(Result) "Field"); \
|
|
1921 |
HS_DTRACE_PROBE_CDECL_N(hotspot_jni, SetStatic##Result##Field__entry,\
|
|
1922 |
( JNIEnv*, jclass, jfieldID FP_SELECT_##Result(COMMA Argument,/*empty*/) ) ); \
|
|
1923 |
HS_DTRACE_PROBE_N(hotspot_jni, SetStatic##Result##Field__entry, \
|
|
1924 |
( env, clazz, fieldID FP_SELECT_##Result(COMMA value,/*empty*/) ) ); \
|
|
1925 |
\
|
|
1926 |
JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
|
|
1927 |
assert(id->is_static_field_id(), "invalid static field id"); \
|
|
1928 |
/* Keep JVMTI addition small and only check enabled flag here. */ \
|
|
1929 |
/* jni_SetField_probe() assumes that is okay to create handles. */ \
|
|
1930 |
if (JvmtiExport::should_post_field_modification()) { \
|
|
1931 |
jvalue field_value; \
|
|
1932 |
field_value.unionType = value; \
|
|
1933 |
JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
|
|
1934 |
} \
|
|
1935 |
id->holder()-> Fieldname##_field_put (id->offset(), value); \
|
|
1936 |
DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\
|
|
1937 |
JNI_END
|
|
1938 |
|
|
1939 |
DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z)
|
|
1940 |
DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b)
|
|
1941 |
DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c)
|
|
1942 |
DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s)
|
|
1943 |
DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i)
|
|
1944 |
DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j)
|
|
1945 |
DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f)
|
|
1946 |
DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d)
|
|
1947 |
|
|
1948 |
|
|
1949 |
//
|
|
1950 |
// String Operations
|
|
1951 |
//
|
|
1952 |
|
|
1953 |
// Unicode Interface
|
|
1954 |
|
|
1955 |
DT_RETURN_MARK_DECL(NewString, jstring);
|
|
1956 |
|
|
1957 |
JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len))
|
|
1958 |
JNIWrapper("NewString");
|
|
1959 |
DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len);
|
|
1960 |
jstring ret = NULL;
|
|
1961 |
DT_RETURN_MARK(NewString, jstring, (const jstring&)ret);
|
|
1962 |
oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL);
|
|
1963 |
ret = (jstring) JNIHandles::make_local(env, string);
|
|
1964 |
return ret;
|
|
1965 |
JNI_END
|
|
1966 |
|
|
1967 |
|
|
1968 |
JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string))
|
|
1969 |
JNIWrapper("GetStringLength");
|
|
1970 |
DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string);
|
|
1971 |
jsize ret = java_lang_String::length(JNIHandles::resolve_non_null(string));
|
|
1972 |
DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret);
|
|
1973 |
return ret;
|
|
1974 |
JNI_END
|
|
1975 |
|
|
1976 |
|
|
1977 |
JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars(
|
|
1978 |
JNIEnv *env, jstring string, jboolean *isCopy))
|
|
1979 |
JNIWrapper("GetStringChars");
|
|
1980 |
DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy);
|
|
1981 |
//%note jni_5
|
|
1982 |
if (isCopy != NULL) {
|
|
1983 |
*isCopy = JNI_TRUE;
|
|
1984 |
}
|
|
1985 |
oop s = JNIHandles::resolve_non_null(string);
|
|
1986 |
int s_len = java_lang_String::length(s);
|
|
1987 |
typeArrayOop s_value = java_lang_String::value(s);
|
|
1988 |
int s_offset = java_lang_String::offset(s);
|
|
1989 |
jchar* buf = NEW_C_HEAP_ARRAY(jchar, s_len + 1); // add one for zero termination
|
|
1990 |
if (s_len > 0) {
|
|
1991 |
memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len);
|
|
1992 |
}
|
|
1993 |
buf[s_len] = 0;
|
|
1994 |
DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf);
|
|
1995 |
return buf;
|
|
1996 |
JNI_END
|
|
1997 |
|
|
1998 |
|
|
1999 |
JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars))
|
|
2000 |
JNIWrapper("ReleaseStringChars");
|
|
2001 |
DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars);
|
|
2002 |
//%note jni_6
|
|
2003 |
if (chars != NULL) {
|
|
2004 |
// Since String objects are supposed to be immutable, don't copy any
|
|
2005 |
// new data back. A bad user will have to go after the char array.
|
|
2006 |
FreeHeap((void*) chars);
|
|
2007 |
}
|
|
2008 |
DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return);
|
|
2009 |
JNI_END
|
|
2010 |
|
|
2011 |
|
|
2012 |
// UTF Interface
|
|
2013 |
|
|
2014 |
DT_RETURN_MARK_DECL(NewStringUTF, jstring);
|
|
2015 |
|
|
2016 |
JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes))
|
|
2017 |
JNIWrapper("NewStringUTF");
|
|
2018 |
DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes);
|
|
2019 |
jstring ret;
|
|
2020 |
DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret);
|
|
2021 |
|
|
2022 |
oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL);
|
|
2023 |
ret = (jstring) JNIHandles::make_local(env, result);
|
|
2024 |
return ret;
|
|
2025 |
JNI_END
|
|
2026 |
|
|
2027 |
|
|
2028 |
JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string))
|
|
2029 |
JNIWrapper("GetStringUTFLength");
|
|
2030 |
DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string);
|
|
2031 |
jsize ret = java_lang_String::utf8_length(JNIHandles::resolve_non_null(string));
|
|
2032 |
DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret);
|
|
2033 |
return ret;
|
|
2034 |
JNI_END
|
|
2035 |
|
|
2036 |
|
|
2037 |
JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy))
|
|
2038 |
JNIWrapper("GetStringUTFChars");
|
|
2039 |
DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy);
|
|
2040 |
ResourceMark rm;
|
|
2041 |
char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(string));
|
|
2042 |
int length = (int)strlen(str);
|
|
2043 |
char* result = AllocateHeap(length+1, "GetStringUTFChars");
|
|
2044 |
strcpy(result, str);
|
|
2045 |
if (isCopy != NULL) *isCopy = JNI_TRUE;
|
|
2046 |
DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result);
|
|
2047 |
return result;
|
|
2048 |
JNI_END
|
|
2049 |
|
|
2050 |
|
|
2051 |
JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars))
|
|
2052 |
JNIWrapper("ReleaseStringUTFChars");
|
|
2053 |
DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars);
|
|
2054 |
if (chars != NULL) {
|
|
2055 |
FreeHeap((char*) chars);
|
|
2056 |
}
|
|
2057 |
DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return);
|
|
2058 |
JNI_END
|
|
2059 |
|
|
2060 |
|
|
2061 |
JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array))
|
|
2062 |
JNIWrapper("GetArrayLength");
|
|
2063 |
DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array);
|
|
2064 |
arrayOop a = arrayOop(JNIHandles::resolve_non_null(array));
|
|
2065 |
assert(a->is_array(), "must be array");
|
|
2066 |
jsize ret = a->length();
|
|
2067 |
DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret);
|
|
2068 |
return ret;
|
|
2069 |
JNI_END
|
|
2070 |
|
|
2071 |
|
|
2072 |
//
|
|
2073 |
// Object Array Operations
|
|
2074 |
//
|
|
2075 |
|
|
2076 |
DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray);
|
|
2077 |
|
|
2078 |
JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement))
|
|
2079 |
JNIWrapper("NewObjectArray");
|
|
2080 |
DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement);
|
|
2081 |
jobjectArray ret = NULL;
|
|
2082 |
DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret);
|
|
2083 |
KlassHandle ek(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(elementClass)));
|
|
2084 |
klassOop ako = Klass::cast(ek())->array_klass(CHECK_NULL);
|
|
2085 |
KlassHandle ak = KlassHandle(THREAD, ako);
|
|
2086 |
objArrayKlass::cast(ak())->initialize(CHECK_NULL);
|
|
2087 |
objArrayOop result = objArrayKlass::cast(ak())->allocate(length, CHECK_NULL);
|
|
2088 |
oop initial_value = JNIHandles::resolve(initialElement);
|
|
2089 |
if (initial_value != NULL) { // array already initialized with NULL
|
|
2090 |
for (int index = 0; index < length; index++) {
|
|
2091 |
result->obj_at_put(index, initial_value);
|
|
2092 |
}
|
|
2093 |
}
|
|
2094 |
ret = (jobjectArray) JNIHandles::make_local(env, result);
|
|
2095 |
return ret;
|
|
2096 |
JNI_END
|
|
2097 |
|
|
2098 |
DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject);
|
|
2099 |
|
|
2100 |
JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index))
|
|
2101 |
JNIWrapper("GetObjectArrayElement");
|
|
2102 |
DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index);
|
|
2103 |
jobject ret = NULL;
|
|
2104 |
DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret);
|
|
2105 |
objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
|
|
2106 |
if (a->is_within_bounds(index)) {
|
|
2107 |
jobject ret = JNIHandles::make_local(env, a->obj_at(index));
|
|
2108 |
return ret;
|
|
2109 |
} else {
|
|
2110 |
char buf[jintAsStringSize];
|
|
2111 |
sprintf(buf, "%d", index);
|
|
2112 |
THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
|
|
2113 |
}
|
|
2114 |
JNI_END
|
|
2115 |
|
|
2116 |
DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement);
|
|
2117 |
|
|
2118 |
JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value))
|
|
2119 |
JNIWrapper("SetObjectArrayElement");
|
|
2120 |
DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value);
|
|
2121 |
DT_VOID_RETURN_MARK(SetObjectArrayElement);
|
|
2122 |
|
|
2123 |
objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
|
|
2124 |
oop v = JNIHandles::resolve(value);
|
|
2125 |
if (a->is_within_bounds(index)) {
|
|
2126 |
if (v == NULL || v->is_a(objArrayKlass::cast(a->klass())->element_klass())) {
|
|
2127 |
a->obj_at_put(index, v);
|
|
2128 |
} else {
|
|
2129 |
THROW(vmSymbols::java_lang_ArrayStoreException());
|
|
2130 |
}
|
|
2131 |
} else {
|
|
2132 |
char buf[jintAsStringSize];
|
|
2133 |
sprintf(buf, "%d", index);
|
|
2134 |
THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
|
|
2135 |
}
|
|
2136 |
JNI_END
|
|
2137 |
|
|
2138 |
|
|
2139 |
#define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \
|
|
2140 |
\
|
|
2141 |
DT_RETURN_MARK_DECL_FOR(Result, New##Result##Array, Return);\
|
|
2142 |
\
|
|
2143 |
JNI_ENTRY(Return, \
|
|
2144 |
jni_New##Result##Array(JNIEnv *env, jsize len)) \
|
|
2145 |
JNIWrapper("New" XSTR(Result) "Array"); \
|
|
2146 |
DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\
|
|
2147 |
Return ret = NULL;\
|
|
2148 |
DT_RETURN_MARK_FOR(Result, New##Result##Array, Return, (const Return&)ret);\
|
|
2149 |
\
|
|
2150 |
oop obj= oopFactory::Allocator(len, CHECK_0); \
|
|
2151 |
ret = (Return) JNIHandles::make_local(env, obj); \
|
|
2152 |
return ret;\
|
|
2153 |
JNI_END
|
|
2154 |
|
|
2155 |
DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean)
|
|
2156 |
DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte)
|
|
2157 |
DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short)
|
|
2158 |
DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char)
|
|
2159 |
DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int)
|
|
2160 |
DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long)
|
|
2161 |
DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float)
|
|
2162 |
DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double)
|
|
2163 |
|
|
2164 |
|
|
2165 |
// Return an address which will fault if the caller writes to it.
|
|
2166 |
|
|
2167 |
static char* get_bad_address() {
|
|
2168 |
static char* bad_address = NULL;
|
|
2169 |
if (bad_address == NULL) {
|
|
2170 |
size_t size = os::vm_allocation_granularity();
|
|
2171 |
bad_address = os::reserve_memory(size);
|
|
2172 |
if (bad_address != NULL) {
|
|
2173 |
os::commit_memory(bad_address, size);
|
|
2174 |
os::protect_memory(bad_address, size);
|
|
2175 |
}
|
|
2176 |
}
|
|
2177 |
return bad_address;
|
|
2178 |
}
|
|
2179 |
|
|
2180 |
|
|
2181 |
#define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \
|
|
2182 |
\
|
|
2183 |
JNI_QUICK_ENTRY(ElementType*, \
|
|
2184 |
jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
|
|
2185 |
JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
|
|
2186 |
DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\
|
|
2187 |
/* allocate an chunk of memory in c land */ \
|
|
2188 |
typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
|
|
2189 |
ElementType* result; \
|
|
2190 |
int len = a->length(); \
|
|
2191 |
if (len == 0) { \
|
|
2192 |
/* Empty array: legal but useless, can't return NULL. \
|
|
2193 |
* Return a pointer to something useless. \
|
|
2194 |
* Avoid asserts in typeArrayOop. */ \
|
|
2195 |
result = (ElementType*)get_bad_address(); \
|
|
2196 |
} else { \
|
|
2197 |
result = NEW_C_HEAP_ARRAY(ElementType, len); \
|
|
2198 |
/* copy the array to the c chunk */ \
|
|
2199 |
memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
|
|
2200 |
} \
|
|
2201 |
if (isCopy) *isCopy = JNI_TRUE; \
|
|
2202 |
DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\
|
|
2203 |
return result; \
|
|
2204 |
JNI_END
|
|
2205 |
|
|
2206 |
DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
|
|
2207 |
DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
|
|
2208 |
DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
|
|
2209 |
DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
|
|
2210 |
DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int)
|
|
2211 |
DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
|
|
2212 |
DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
|
|
2213 |
DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
|
|
2214 |
|
|
2215 |
|
|
2216 |
#define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \
|
|
2217 |
\
|
|
2218 |
JNI_QUICK_ENTRY(void, \
|
|
2219 |
jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
|
|
2220 |
ElementType *buf, jint mode)) \
|
|
2221 |
JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
|
|
2222 |
DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\
|
|
2223 |
typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
|
|
2224 |
int len = a->length(); \
|
|
2225 |
if (len != 0) { /* Empty array: nothing to free or copy. */ \
|
|
2226 |
if ((mode == 0) || (mode == JNI_COMMIT)) { \
|
|
2227 |
memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
|
|
2228 |
} \
|
|
2229 |
if ((mode == 0) || (mode == JNI_ABORT)) { \
|
|
2230 |
FreeHeap(buf); \
|
|
2231 |
} \
|
|
2232 |
} \
|
|
2233 |
DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\
|
|
2234 |
JNI_END
|
|
2235 |
|
|
2236 |
DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
|
|
2237 |
DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
|
|
2238 |
DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
|
|
2239 |
DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
|
|
2240 |
DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int)
|
|
2241 |
DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
|
|
2242 |
DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
|
|
2243 |
DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
|
|
2244 |
|
|
2245 |
#define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
|
|
2246 |
DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\
|
|
2247 |
\
|
|
2248 |
JNI_ENTRY(void, \
|
|
2249 |
jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
|
|
2250 |
jsize len, ElementType *buf)) \
|
|
2251 |
JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
|
|
2252 |
DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\
|
|
2253 |
DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
|
|
2254 |
typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
|
|
2255 |
if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
|
|
2256 |
THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
|
|
2257 |
} else { \
|
|
2258 |
if (len > 0) { \
|
|
2259 |
int sc = typeArrayKlass::cast(src->klass())->log2_element_size(); \
|
|
2260 |
memcpy((u_char*) buf, \
|
|
2261 |
(u_char*) src->Tag##_at_addr(start), \
|
|
2262 |
len << sc); \
|
|
2263 |
} \
|
|
2264 |
} \
|
|
2265 |
JNI_END
|
|
2266 |
|
|
2267 |
DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool)
|
|
2268 |
DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
|
|
2269 |
DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
|
|
2270 |
DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
|
|
2271 |
DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int)
|
|
2272 |
DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long)
|
|
2273 |
DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
|
|
2274 |
DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
|
|
2275 |
|
|
2276 |
#define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
|
|
2277 |
DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\
|
|
2278 |
\
|
|
2279 |
JNI_ENTRY(void, \
|
|
2280 |
jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
|
|
2281 |
jsize len, const ElementType *buf)) \
|
|
2282 |
JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
|
|
2283 |
DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\
|
|
2284 |
DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
|
|
2285 |
typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
|
|
2286 |
if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
|
|
2287 |
THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
|
|
2288 |
} else { \
|
|
2289 |
if (len > 0) { \
|
|
2290 |
int sc = typeArrayKlass::cast(dst->klass())->log2_element_size(); \
|
|
2291 |
memcpy((u_char*) dst->Tag##_at_addr(start), \
|
|
2292 |
(u_char*) buf, \
|
|
2293 |
len << sc); \
|
|
2294 |
} \
|
|
2295 |
} \
|
|
2296 |
JNI_END
|
|
2297 |
|
|
2298 |
DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool)
|
|
2299 |
DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
|
|
2300 |
DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
|
|
2301 |
DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
|
|
2302 |
DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int)
|
|
2303 |
DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long)
|
|
2304 |
DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
|
|
2305 |
DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
|
|
2306 |
|
|
2307 |
|
|
2308 |
//
|
|
2309 |
// Interception of natives
|
|
2310 |
//
|
|
2311 |
|
|
2312 |
// The RegisterNatives call being attempted tried to register with a method that
|
|
2313 |
// is not native. Ask JVM TI what prefixes have been specified. Then check
|
|
2314 |
// to see if the native method is now wrapped with the prefixes. See the
|
|
2315 |
// SetNativeMethodPrefix(es) functions in the JVM TI Spec for details.
|
|
2316 |
static methodOop find_prefixed_native(KlassHandle k,
|
|
2317 |
symbolHandle name, symbolHandle signature, TRAPS) {
|
|
2318 |
ResourceMark rm(THREAD);
|
|
2319 |
methodOop method;
|
|
2320 |
int name_len = name->utf8_length();
|
|
2321 |
char* name_str = name->as_utf8();
|
|
2322 |
int prefix_count;
|
|
2323 |
char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count);
|
|
2324 |
for (int i = 0; i < prefix_count; i++) {
|
|
2325 |
char* prefix = prefixes[i];
|
|
2326 |
int prefix_len = (int)strlen(prefix);
|
|
2327 |
|
|
2328 |
// try adding this prefix to the method name and see if it matches another method name
|
|
2329 |
int trial_len = name_len + prefix_len;
|
|
2330 |
char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1);
|
|
2331 |
strcpy(trial_name_str, prefix);
|
|
2332 |
strcat(trial_name_str, name_str);
|
|
2333 |
symbolHandle trial_name(THREAD, SymbolTable::probe(trial_name_str, trial_len));
|
|
2334 |
if (trial_name.is_null()) {
|
|
2335 |
continue; // no such symbol, so this prefix wasn't used, try the next prefix
|
|
2336 |
}
|
|
2337 |
method = Klass::cast(k())->lookup_method(trial_name(), signature());
|
|
2338 |
if (method == NULL) {
|
|
2339 |
continue; // signature doesn't match, try the next prefix
|
|
2340 |
}
|
|
2341 |
if (method->is_native()) {
|
|
2342 |
method->set_is_prefixed_native();
|
|
2343 |
return method; // wahoo, we found a prefixed version of the method, return it
|
|
2344 |
}
|
|
2345 |
// found as non-native, so prefix is good, add it, probably just need more prefixes
|
|
2346 |
name_len = trial_len;
|
|
2347 |
name_str = trial_name_str;
|
|
2348 |
}
|
|
2349 |
return NULL; // not found
|
|
2350 |
}
|
|
2351 |
|
|
2352 |
static bool register_native(KlassHandle k, symbolHandle name, symbolHandle signature, address entry, TRAPS) {
|
|
2353 |
methodOop method = Klass::cast(k())->lookup_method(name(), signature());
|
|
2354 |
if (method == NULL) {
|
|
2355 |
ResourceMark rm;
|
|
2356 |
stringStream st;
|
|
2357 |
st.print("Method %s name or signature does not match",
|
|
2358 |
methodOopDesc::name_and_sig_as_C_string(Klass::cast(k()), name(), signature()));
|
|
2359 |
THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
|
|
2360 |
}
|
|
2361 |
if (!method->is_native()) {
|
|
2362 |
// trying to register to a non-native method, see if a JVM TI agent has added prefix(es)
|
|
2363 |
method = find_prefixed_native(k, name, signature, THREAD);
|
|
2364 |
if (method == NULL) {
|
|
2365 |
ResourceMark rm;
|
|
2366 |
stringStream st;
|
|
2367 |
st.print("Method %s is not declared as native",
|
|
2368 |
methodOopDesc::name_and_sig_as_C_string(Klass::cast(k()), name(), signature()));
|
|
2369 |
THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
|
|
2370 |
}
|
|
2371 |
}
|
|
2372 |
|
|
2373 |
if (entry != NULL) {
|
|
2374 |
method->set_native_function(entry,
|
|
2375 |
methodOopDesc::native_bind_event_is_interesting);
|
|
2376 |
} else {
|
|
2377 |
method->clear_native_function();
|
|
2378 |
}
|
|
2379 |
if (PrintJNIResolving) {
|
|
2380 |
ResourceMark rm(THREAD);
|
|
2381 |
tty->print_cr("[Registering JNI native method %s.%s]",
|
|
2382 |
Klass::cast(method->method_holder())->external_name(),
|
|
2383 |
method->name()->as_C_string());
|
|
2384 |
}
|
|
2385 |
return true;
|
|
2386 |
}
|
|
2387 |
|
|
2388 |
DT_RETURN_MARK_DECL(RegisterNatives, jint);
|
|
2389 |
|
|
2390 |
JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz,
|
|
2391 |
const JNINativeMethod *methods,
|
|
2392 |
jint nMethods))
|
|
2393 |
JNIWrapper("RegisterNatives");
|
|
2394 |
DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods);
|
|
2395 |
jint ret = 0;
|
|
2396 |
DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret);
|
|
2397 |
|
|
2398 |
KlassHandle h_k(thread, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
|
|
2399 |
|
|
2400 |
for (int index = 0; index < nMethods; index++) {
|
|
2401 |
const char* meth_name = methods[index].name;
|
|
2402 |
const char* meth_sig = methods[index].signature;
|
|
2403 |
int meth_name_len = (int)strlen(meth_name);
|
|
2404 |
|
|
2405 |
// The class should have been loaded (we have an instance of the class
|
|
2406 |
// passed in) so the method and signature should already be in the symbol
|
|
2407 |
// table. If they're not there, the method doesn't exist.
|
|
2408 |
symbolHandle name(THREAD, SymbolTable::probe(meth_name, meth_name_len));
|
|
2409 |
symbolHandle signature(THREAD, SymbolTable::probe(meth_sig, (int)strlen(meth_sig)));
|
|
2410 |
|
|
2411 |
if (name.is_null() || signature.is_null()) {
|
|
2412 |
ResourceMark rm;
|
|
2413 |
stringStream st;
|
|
2414 |
st.print("Method %s.%s%s not found", Klass::cast(h_k())->external_name(), meth_name, meth_sig);
|
|
2415 |
// Must return negative value on failure
|
|
2416 |
THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1);
|
|
2417 |
}
|
|
2418 |
|
|
2419 |
bool res = register_native(h_k, name, signature,
|
|
2420 |
(address) methods[index].fnPtr, THREAD);
|
|
2421 |
if (!res) {
|
|
2422 |
ret = -1;
|
|
2423 |
break;
|
|
2424 |
}
|
|
2425 |
}
|
|
2426 |
return ret;
|
|
2427 |
JNI_END
|
|
2428 |
|
|
2429 |
|
|
2430 |
JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz))
|
|
2431 |
JNIWrapper("UnregisterNatives");
|
|
2432 |
DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz);
|
|
2433 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz));
|
|
2434 |
//%note jni_2
|
|
2435 |
if (Klass::cast(k)->oop_is_instance()) {
|
|
2436 |
for (int index = 0; index < instanceKlass::cast(k)->methods()->length(); index++) {
|
|
2437 |
methodOop m = methodOop(instanceKlass::cast(k)->methods()->obj_at(index));
|
|
2438 |
if (m->is_native()) {
|
|
2439 |
m->clear_native_function();
|
|
2440 |
m->set_signature_handler(NULL);
|
|
2441 |
}
|
|
2442 |
}
|
|
2443 |
}
|
|
2444 |
DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0);
|
|
2445 |
return 0;
|
|
2446 |
JNI_END
|
|
2447 |
|
|
2448 |
//
|
|
2449 |
// Monitor functions
|
|
2450 |
//
|
|
2451 |
|
|
2452 |
DT_RETURN_MARK_DECL(MonitorEnter, jint);
|
|
2453 |
|
|
2454 |
JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj))
|
|
2455 |
DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj);
|
|
2456 |
jint ret = JNI_ERR;
|
|
2457 |
DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret);
|
|
2458 |
|
|
2459 |
// If the object is null, we can't do anything with it
|
|
2460 |
if (jobj == NULL) {
|
|
2461 |
THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
|
|
2462 |
}
|
|
2463 |
|
|
2464 |
Handle obj(thread, JNIHandles::resolve_non_null(jobj));
|
|
2465 |
ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR));
|
|
2466 |
ret = JNI_OK;
|
|
2467 |
return ret;
|
|
2468 |
JNI_END
|
|
2469 |
|
|
2470 |
DT_RETURN_MARK_DECL(MonitorExit, jint);
|
|
2471 |
|
|
2472 |
JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj))
|
|
2473 |
DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj);
|
|
2474 |
jint ret = JNI_ERR;
|
|
2475 |
DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret);
|
|
2476 |
|
|
2477 |
// Don't do anything with a null object
|
|
2478 |
if (jobj == NULL) {
|
|
2479 |
THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
|
|
2480 |
}
|
|
2481 |
|
|
2482 |
Handle obj(THREAD, JNIHandles::resolve_non_null(jobj));
|
|
2483 |
ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR));
|
|
2484 |
|
|
2485 |
ret = JNI_OK;
|
|
2486 |
return ret;
|
|
2487 |
JNI_END
|
|
2488 |
|
|
2489 |
//
|
|
2490 |
// Extensions
|
|
2491 |
//
|
|
2492 |
|
|
2493 |
DT_VOID_RETURN_MARK_DECL(GetStringRegion);
|
|
2494 |
|
|
2495 |
JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf))
|
|
2496 |
JNIWrapper("GetStringRegion");
|
|
2497 |
DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf);
|
|
2498 |
DT_VOID_RETURN_MARK(GetStringRegion);
|
|
2499 |
oop s = JNIHandles::resolve_non_null(string);
|
|
2500 |
int s_len = java_lang_String::length(s);
|
|
2501 |
if (start < 0 || len < 0 || start + len > s_len) {
|
|
2502 |
THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
|
|
2503 |
} else {
|
|
2504 |
if (len > 0) {
|
|
2505 |
int s_offset = java_lang_String::offset(s);
|
|
2506 |
typeArrayOop s_value = java_lang_String::value(s);
|
|
2507 |
memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len);
|
|
2508 |
}
|
|
2509 |
}
|
|
2510 |
JNI_END
|
|
2511 |
|
|
2512 |
DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion);
|
|
2513 |
|
|
2514 |
JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf))
|
|
2515 |
JNIWrapper("GetStringUTFRegion");
|
|
2516 |
DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf);
|
|
2517 |
DT_VOID_RETURN_MARK(GetStringUTFRegion);
|
|
2518 |
oop s = JNIHandles::resolve_non_null(string);
|
|
2519 |
int s_len = java_lang_String::length(s);
|
|
2520 |
if (start < 0 || len < 0 || start + len > s_len) {
|
|
2521 |
THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
|
|
2522 |
} else {
|
|
2523 |
//%note jni_7
|
|
2524 |
if (len > 0) {
|
|
2525 |
ResourceMark rm(THREAD);
|
|
2526 |
char *utf_region = java_lang_String::as_utf8_string(s, start, len);
|
|
2527 |
int utf_len = (int)strlen(utf_region);
|
|
2528 |
memcpy(buf, utf_region, utf_len);
|
|
2529 |
buf[utf_len] = 0;
|
|
2530 |
} else {
|
|
2531 |
// JDK null-terminates the buffer even in len is zero
|
|
2532 |
if (buf != NULL) {
|
|
2533 |
buf[0] = 0;
|
|
2534 |
}
|
|
2535 |
}
|
|
2536 |
}
|
|
2537 |
JNI_END
|
|
2538 |
|
|
2539 |
|
|
2540 |
JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy))
|
|
2541 |
JNIWrapper("GetPrimitiveArrayCritical");
|
|
2542 |
DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy);
|
|
2543 |
GC_locker::lock_critical(thread);
|
|
2544 |
if (isCopy != NULL) {
|
|
2545 |
*isCopy = JNI_FALSE;
|
|
2546 |
}
|
|
2547 |
oop a = JNIHandles::resolve_non_null(array);
|
|
2548 |
assert(a->is_array(), "just checking");
|
|
2549 |
BasicType type;
|
|
2550 |
if (a->is_objArray()) {
|
|
2551 |
type = T_OBJECT;
|
|
2552 |
} else {
|
|
2553 |
type = typeArrayKlass::cast(a->klass())->element_type();
|
|
2554 |
}
|
|
2555 |
void* ret = arrayOop(a)->base(type);
|
|
2556 |
DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret);
|
|
2557 |
return ret;
|
|
2558 |
JNI_END
|
|
2559 |
|
|
2560 |
|
|
2561 |
JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode))
|
|
2562 |
JNIWrapper("ReleasePrimitiveArrayCritical");
|
|
2563 |
DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode);
|
|
2564 |
// The array, carray and mode arguments are ignored
|
|
2565 |
GC_locker::unlock_critical(thread);
|
|
2566 |
DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return);
|
|
2567 |
JNI_END
|
|
2568 |
|
|
2569 |
|
|
2570 |
JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy))
|
|
2571 |
JNIWrapper("GetStringCritical");
|
|
2572 |
DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy);
|
|
2573 |
GC_locker::lock_critical(thread);
|
|
2574 |
if (isCopy != NULL) {
|
|
2575 |
*isCopy = JNI_FALSE;
|
|
2576 |
}
|
|
2577 |
oop s = JNIHandles::resolve_non_null(string);
|
|
2578 |
int s_len = java_lang_String::length(s);
|
|
2579 |
typeArrayOop s_value = java_lang_String::value(s);
|
|
2580 |
int s_offset = java_lang_String::offset(s);
|
|
2581 |
const jchar* ret;
|
|
2582 |
if (s_len > 0) {
|
|
2583 |
ret = s_value->char_at_addr(s_offset);
|
|
2584 |
} else {
|
|
2585 |
ret = (jchar*) s_value->base(T_CHAR);
|
|
2586 |
}
|
|
2587 |
DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret);
|
|
2588 |
return ret;
|
|
2589 |
JNI_END
|
|
2590 |
|
|
2591 |
|
|
2592 |
JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars))
|
|
2593 |
JNIWrapper("ReleaseStringCritical");
|
|
2594 |
DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars);
|
|
2595 |
// The str and chars arguments are ignored
|
|
2596 |
GC_locker::unlock_critical(thread);
|
|
2597 |
DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return);
|
|
2598 |
JNI_END
|
|
2599 |
|
|
2600 |
|
|
2601 |
JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref))
|
|
2602 |
JNIWrapper("jni_NewWeakGlobalRef");
|
|
2603 |
DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref);
|
|
2604 |
Handle ref_handle(thread, JNIHandles::resolve(ref));
|
|
2605 |
jweak ret = JNIHandles::make_weak_global(ref_handle);
|
|
2606 |
DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret);
|
|
2607 |
return ret;
|
|
2608 |
JNI_END
|
|
2609 |
|
|
2610 |
// Must be JNI_ENTRY (with HandleMark)
|
|
2611 |
JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref))
|
|
2612 |
JNIWrapper("jni_DeleteWeakGlobalRef");
|
|
2613 |
DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref);
|
|
2614 |
JNIHandles::destroy_weak_global(ref);
|
|
2615 |
DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return);
|
|
2616 |
JNI_END
|
|
2617 |
|
|
2618 |
|
|
2619 |
JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env))
|
|
2620 |
JNIWrapper("jni_ExceptionCheck");
|
|
2621 |
DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env);
|
|
2622 |
jni_check_async_exceptions(thread);
|
|
2623 |
jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE;
|
|
2624 |
DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret);
|
|
2625 |
return ret;
|
|
2626 |
JNI_END
|
|
2627 |
|
|
2628 |
|
|
2629 |
// Initialization state for three routines below relating to
|
|
2630 |
// java.nio.DirectBuffers
|
|
2631 |
static jint directBufferSupportInitializeStarted = 0;
|
|
2632 |
static volatile jint directBufferSupportInitializeEnded = 0;
|
|
2633 |
static volatile jint directBufferSupportInitializeFailed = 0;
|
|
2634 |
static jclass bufferClass = NULL;
|
|
2635 |
static jclass directBufferClass = NULL;
|
|
2636 |
static jclass directByteBufferClass = NULL;
|
|
2637 |
static jmethodID directByteBufferConstructor = NULL;
|
|
2638 |
static jfieldID directBufferAddressField = NULL;
|
|
2639 |
static jfieldID bufferCapacityField = NULL;
|
|
2640 |
|
|
2641 |
static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) {
|
|
2642 |
Handle loader; // null (bootstrap) loader
|
|
2643 |
Handle protection_domain; // null protection domain
|
|
2644 |
|
|
2645 |
symbolHandle sym = oopFactory::new_symbol_handle(name, CHECK_NULL);
|
|
2646 |
return find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL);
|
|
2647 |
}
|
|
2648 |
|
|
2649 |
// These lookups are done with the NULL (bootstrap) ClassLoader to
|
|
2650 |
// circumvent any security checks that would be done by jni_FindClass.
|
|
2651 |
JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env))
|
|
2652 |
{
|
|
2653 |
if ((bufferClass = lookupOne(env, "java/nio/Buffer", thread)) == NULL) { return false; }
|
|
2654 |
if ((directBufferClass = lookupOne(env, "sun/nio/ch/DirectBuffer", thread)) == NULL) { return false; }
|
|
2655 |
if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; }
|
|
2656 |
return true;
|
|
2657 |
}
|
|
2658 |
JNI_END
|
|
2659 |
|
|
2660 |
|
|
2661 |
static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) {
|
|
2662 |
if (directBufferSupportInitializeFailed) {
|
|
2663 |
return false;
|
|
2664 |
}
|
|
2665 |
|
|
2666 |
if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) {
|
|
2667 |
if (!lookupDirectBufferClasses(env)) {
|
|
2668 |
directBufferSupportInitializeFailed = 1;
|
|
2669 |
return false;
|
|
2670 |
}
|
|
2671 |
|
|
2672 |
// Make global references for these
|
|
2673 |
bufferClass = (jclass) env->NewGlobalRef(bufferClass);
|
|
2674 |
directBufferClass = (jclass) env->NewGlobalRef(directBufferClass);
|
|
2675 |
directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass);
|
|
2676 |
|
|
2677 |
// Get needed field and method IDs
|
|
2678 |
directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V");
|
|
2679 |
directBufferAddressField = env->GetFieldID(bufferClass, "address", "J");
|
|
2680 |
bufferCapacityField = env->GetFieldID(bufferClass, "capacity", "I");
|
|
2681 |
|
|
2682 |
if ((directByteBufferConstructor == NULL) ||
|
|
2683 |
(directBufferAddressField == NULL) ||
|
|
2684 |
(bufferCapacityField == NULL)) {
|
|
2685 |
directBufferSupportInitializeFailed = 1;
|
|
2686 |
return false;
|
|
2687 |
}
|
|
2688 |
|
|
2689 |
directBufferSupportInitializeEnded = 1;
|
|
2690 |
} else {
|
|
2691 |
ThreadInVMfromNative tivn(thread); // set state as yield_all can call os:sleep
|
|
2692 |
while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) {
|
|
2693 |
os::yield_all();
|
|
2694 |
}
|
|
2695 |
}
|
|
2696 |
|
|
2697 |
return !directBufferSupportInitializeFailed;
|
|
2698 |
}
|
|
2699 |
|
|
2700 |
extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity)
|
|
2701 |
{
|
|
2702 |
// thread_from_jni_environment() will block if VM is gone.
|
|
2703 |
JavaThread* thread = JavaThread::thread_from_jni_environment(env);
|
|
2704 |
|
|
2705 |
JNIWrapper("jni_NewDirectByteBuffer");
|
|
2706 |
DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity);
|
|
2707 |
|
|
2708 |
if (!directBufferSupportInitializeEnded) {
|
|
2709 |
if (!initializeDirectBufferSupport(env, thread)) {
|
|
2710 |
DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL);
|
|
2711 |
return NULL;
|
|
2712 |
}
|
|
2713 |
}
|
|
2714 |
|
|
2715 |
// Being paranoid about accidental sign extension on address
|
|
2716 |
jlong addr = (jlong) ((uintptr_t) address);
|
|
2717 |
// NOTE that package-private DirectByteBuffer constructor currently
|
|
2718 |
// takes int capacity
|
|
2719 |
jint cap = (jint) capacity;
|
|
2720 |
jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap);
|
|
2721 |
DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret);
|
|
2722 |
return ret;
|
|
2723 |
}
|
|
2724 |
|
|
2725 |
DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*);
|
|
2726 |
|
|
2727 |
extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf)
|
|
2728 |
{
|
|
2729 |
// thread_from_jni_environment() will block if VM is gone.
|
|
2730 |
JavaThread* thread = JavaThread::thread_from_jni_environment(env);
|
|
2731 |
|
|
2732 |
JNIWrapper("jni_GetDirectBufferAddress");
|
|
2733 |
DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf);
|
|
2734 |
void* ret = NULL;
|
|
2735 |
DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret);
|
|
2736 |
|
|
2737 |
if (!directBufferSupportInitializeEnded) {
|
|
2738 |
if (!initializeDirectBufferSupport(env, thread)) {
|
|
2739 |
return 0;
|
|
2740 |
}
|
|
2741 |
}
|
|
2742 |
|
|
2743 |
if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) {
|
|
2744 |
return 0;
|
|
2745 |
}
|
|
2746 |
|
|
2747 |
ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField);
|
|
2748 |
return ret;
|
|
2749 |
}
|
|
2750 |
|
|
2751 |
DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong);
|
|
2752 |
|
|
2753 |
extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf)
|
|
2754 |
{
|
|
2755 |
// thread_from_jni_environment() will block if VM is gone.
|
|
2756 |
JavaThread* thread = JavaThread::thread_from_jni_environment(env);
|
|
2757 |
|
|
2758 |
JNIWrapper("jni_GetDirectBufferCapacity");
|
|
2759 |
DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf);
|
|
2760 |
jlong ret = -1;
|
|
2761 |
DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret);
|
|
2762 |
|
|
2763 |
if (!directBufferSupportInitializeEnded) {
|
|
2764 |
if (!initializeDirectBufferSupport(env, thread)) {
|
|
2765 |
ret = 0;
|
|
2766 |
return ret;
|
|
2767 |
}
|
|
2768 |
}
|
|
2769 |
|
|
2770 |
if (buf == NULL) {
|
|
2771 |
return -1;
|
|
2772 |
}
|
|
2773 |
|
|
2774 |
if (!env->IsInstanceOf(buf, directBufferClass)) {
|
|
2775 |
return -1;
|
|
2776 |
}
|
|
2777 |
|
|
2778 |
// NOTE that capacity is currently an int in the implementation
|
|
2779 |
ret = env->GetIntField(buf, bufferCapacityField);
|
|
2780 |
return ret;
|
|
2781 |
}
|
|
2782 |
|
|
2783 |
|
|
2784 |
JNI_LEAF(jint, jni_GetVersion(JNIEnv *env))
|
|
2785 |
JNIWrapper("GetVersion");
|
|
2786 |
DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env);
|
|
2787 |
DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion);
|
|
2788 |
return CurrentVersion;
|
|
2789 |
JNI_END
|
|
2790 |
|
|
2791 |
extern struct JavaVM_ main_vm;
|
|
2792 |
|
|
2793 |
JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm))
|
|
2794 |
JNIWrapper("jni_GetJavaVM");
|
|
2795 |
DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm);
|
|
2796 |
*vm = (JavaVM *)(&main_vm);
|
|
2797 |
DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK);
|
|
2798 |
return JNI_OK;
|
|
2799 |
JNI_END
|
|
2800 |
|
|
2801 |
// Structure containing all jni functions
|
|
2802 |
struct JNINativeInterface_ jni_NativeInterface = {
|
|
2803 |
NULL,
|
|
2804 |
NULL,
|
|
2805 |
NULL,
|
|
2806 |
|
|
2807 |
NULL,
|
|
2808 |
|
|
2809 |
jni_GetVersion,
|
|
2810 |
|
|
2811 |
jni_DefineClass,
|
|
2812 |
jni_FindClass,
|
|
2813 |
|
|
2814 |
jni_FromReflectedMethod,
|
|
2815 |
jni_FromReflectedField,
|
|
2816 |
|
|
2817 |
jni_ToReflectedMethod,
|
|
2818 |
|
|
2819 |
jni_GetSuperclass,
|
|
2820 |
jni_IsAssignableFrom,
|
|
2821 |
|
|
2822 |
jni_ToReflectedField,
|
|
2823 |
|
|
2824 |
jni_Throw,
|
|
2825 |
jni_ThrowNew,
|
|
2826 |
jni_ExceptionOccurred,
|
|
2827 |
jni_ExceptionDescribe,
|
|
2828 |
jni_ExceptionClear,
|
|
2829 |
jni_FatalError,
|
|
2830 |
|
|
2831 |
jni_PushLocalFrame,
|
|
2832 |
jni_PopLocalFrame,
|
|
2833 |
|
|
2834 |
jni_NewGlobalRef,
|
|
2835 |
jni_DeleteGlobalRef,
|
|
2836 |
jni_DeleteLocalRef,
|
|
2837 |
jni_IsSameObject,
|
|
2838 |
|
|
2839 |
jni_NewLocalRef,
|
|
2840 |
jni_EnsureLocalCapacity,
|
|
2841 |
|
|
2842 |
jni_AllocObject,
|
|
2843 |
jni_NewObject,
|
|
2844 |
jni_NewObjectV,
|
|
2845 |
jni_NewObjectA,
|
|
2846 |
|
|
2847 |
jni_GetObjectClass,
|
|
2848 |
jni_IsInstanceOf,
|
|
2849 |
|
|
2850 |
jni_GetMethodID,
|
|
2851 |
|
|
2852 |
jni_CallObjectMethod,
|
|
2853 |
jni_CallObjectMethodV,
|
|
2854 |
jni_CallObjectMethodA,
|
|
2855 |
jni_CallBooleanMethod,
|
|
2856 |
jni_CallBooleanMethodV,
|
|
2857 |
jni_CallBooleanMethodA,
|
|
2858 |
jni_CallByteMethod,
|
|
2859 |
jni_CallByteMethodV,
|
|
2860 |
jni_CallByteMethodA,
|
|
2861 |
jni_CallCharMethod,
|
|
2862 |
jni_CallCharMethodV,
|
|
2863 |
jni_CallCharMethodA,
|
|
2864 |
jni_CallShortMethod,
|
|
2865 |
jni_CallShortMethodV,
|
|
2866 |
jni_CallShortMethodA,
|
|
2867 |
jni_CallIntMethod,
|
|
2868 |
jni_CallIntMethodV,
|
|
2869 |
jni_CallIntMethodA,
|
|
2870 |
jni_CallLongMethod,
|
|
2871 |
jni_CallLongMethodV,
|
|
2872 |
jni_CallLongMethodA,
|
|
2873 |
jni_CallFloatMethod,
|
|
2874 |
jni_CallFloatMethodV,
|
|
2875 |
jni_CallFloatMethodA,
|
|
2876 |
jni_CallDoubleMethod,
|
|
2877 |
jni_CallDoubleMethodV,
|
|
2878 |
jni_CallDoubleMethodA,
|
|
2879 |
jni_CallVoidMethod,
|
|
2880 |
jni_CallVoidMethodV,
|
|
2881 |
jni_CallVoidMethodA,
|
|
2882 |
|
|
2883 |
jni_CallNonvirtualObjectMethod,
|
|
2884 |
jni_CallNonvirtualObjectMethodV,
|
|
2885 |
jni_CallNonvirtualObjectMethodA,
|
|
2886 |
jni_CallNonvirtualBooleanMethod,
|
|
2887 |
jni_CallNonvirtualBooleanMethodV,
|
|
2888 |
jni_CallNonvirtualBooleanMethodA,
|
|
2889 |
jni_CallNonvirtualByteMethod,
|
|
2890 |
jni_CallNonvirtualByteMethodV,
|
|
2891 |
jni_CallNonvirtualByteMethodA,
|
|
2892 |
jni_CallNonvirtualCharMethod,
|
|
2893 |
jni_CallNonvirtualCharMethodV,
|
|
2894 |
jni_CallNonvirtualCharMethodA,
|
|
2895 |
jni_CallNonvirtualShortMethod,
|
|
2896 |
jni_CallNonvirtualShortMethodV,
|
|
2897 |
jni_CallNonvirtualShortMethodA,
|
|
2898 |
jni_CallNonvirtualIntMethod,
|
|
2899 |
jni_CallNonvirtualIntMethodV,
|
|
2900 |
jni_CallNonvirtualIntMethodA,
|
|
2901 |
jni_CallNonvirtualLongMethod,
|
|
2902 |
jni_CallNonvirtualLongMethodV,
|
|
2903 |
jni_CallNonvirtualLongMethodA,
|
|
2904 |
jni_CallNonvirtualFloatMethod,
|
|
2905 |
jni_CallNonvirtualFloatMethodV,
|
|
2906 |
jni_CallNonvirtualFloatMethodA,
|
|
2907 |
jni_CallNonvirtualDoubleMethod,
|
|
2908 |
jni_CallNonvirtualDoubleMethodV,
|
|
2909 |
jni_CallNonvirtualDoubleMethodA,
|
|
2910 |
jni_CallNonvirtualVoidMethod,
|
|
2911 |
jni_CallNonvirtualVoidMethodV,
|
|
2912 |
jni_CallNonvirtualVoidMethodA,
|
|
2913 |
|
|
2914 |
jni_GetFieldID,
|
|
2915 |
|
|
2916 |
jni_GetObjectField,
|
|
2917 |
jni_GetBooleanField,
|
|
2918 |
jni_GetByteField,
|
|
2919 |
jni_GetCharField,
|
|
2920 |
jni_GetShortField,
|
|
2921 |
jni_GetIntField,
|
|
2922 |
jni_GetLongField,
|
|
2923 |
jni_GetFloatField,
|
|
2924 |
jni_GetDoubleField,
|
|
2925 |
|
|
2926 |
jni_SetObjectField,
|
|
2927 |
jni_SetBooleanField,
|
|
2928 |
jni_SetByteField,
|
|
2929 |
jni_SetCharField,
|
|
2930 |
jni_SetShortField,
|
|
2931 |
jni_SetIntField,
|
|
2932 |
jni_SetLongField,
|
|
2933 |
jni_SetFloatField,
|
|
2934 |
jni_SetDoubleField,
|
|
2935 |
|
|
2936 |
jni_GetStaticMethodID,
|
|
2937 |
|
|
2938 |
jni_CallStaticObjectMethod,
|
|
2939 |
jni_CallStaticObjectMethodV,
|
|
2940 |
jni_CallStaticObjectMethodA,
|
|
2941 |
jni_CallStaticBooleanMethod,
|
|
2942 |
jni_CallStaticBooleanMethodV,
|
|
2943 |
jni_CallStaticBooleanMethodA,
|
|
2944 |
jni_CallStaticByteMethod,
|
|
2945 |
jni_CallStaticByteMethodV,
|
|
2946 |
jni_CallStaticByteMethodA,
|
|
2947 |
jni_CallStaticCharMethod,
|
|
2948 |
jni_CallStaticCharMethodV,
|
|
2949 |
jni_CallStaticCharMethodA,
|
|
2950 |
jni_CallStaticShortMethod,
|
|
2951 |
jni_CallStaticShortMethodV,
|
|
2952 |
jni_CallStaticShortMethodA,
|
|
2953 |
jni_CallStaticIntMethod,
|
|
2954 |
jni_CallStaticIntMethodV,
|
|
2955 |
jni_CallStaticIntMethodA,
|
|
2956 |
jni_CallStaticLongMethod,
|
|
2957 |
jni_CallStaticLongMethodV,
|
|
2958 |
jni_CallStaticLongMethodA,
|
|
2959 |
jni_CallStaticFloatMethod,
|
|
2960 |
jni_CallStaticFloatMethodV,
|
|
2961 |
jni_CallStaticFloatMethodA,
|
|
2962 |
jni_CallStaticDoubleMethod,
|
|
2963 |
jni_CallStaticDoubleMethodV,
|
|
2964 |
jni_CallStaticDoubleMethodA,
|
|
2965 |
jni_CallStaticVoidMethod,
|
|
2966 |
jni_CallStaticVoidMethodV,
|
|
2967 |
jni_CallStaticVoidMethodA,
|
|
2968 |
|
|
2969 |
jni_GetStaticFieldID,
|
|
2970 |
|
|
2971 |
jni_GetStaticObjectField,
|
|
2972 |
jni_GetStaticBooleanField,
|
|
2973 |
jni_GetStaticByteField,
|
|
2974 |
jni_GetStaticCharField,
|
|
2975 |
jni_GetStaticShortField,
|
|
2976 |
jni_GetStaticIntField,
|
|
2977 |
jni_GetStaticLongField,
|
|
2978 |
jni_GetStaticFloatField,
|
|
2979 |
jni_GetStaticDoubleField,
|
|
2980 |
|
|
2981 |
jni_SetStaticObjectField,
|
|
2982 |
jni_SetStaticBooleanField,
|
|
2983 |
jni_SetStaticByteField,
|
|
2984 |
jni_SetStaticCharField,
|
|
2985 |
jni_SetStaticShortField,
|
|
2986 |
jni_SetStaticIntField,
|
|
2987 |
jni_SetStaticLongField,
|
|
2988 |
jni_SetStaticFloatField,
|
|
2989 |
jni_SetStaticDoubleField,
|
|
2990 |
|
|
2991 |
jni_NewString,
|
|
2992 |
jni_GetStringLength,
|
|
2993 |
jni_GetStringChars,
|
|
2994 |
jni_ReleaseStringChars,
|
|
2995 |
|
|
2996 |
jni_NewStringUTF,
|
|
2997 |
jni_GetStringUTFLength,
|
|
2998 |
jni_GetStringUTFChars,
|
|
2999 |
jni_ReleaseStringUTFChars,
|
|
3000 |
|
|
3001 |
jni_GetArrayLength,
|
|
3002 |
|
|
3003 |
jni_NewObjectArray,
|
|
3004 |
jni_GetObjectArrayElement,
|
|
3005 |
jni_SetObjectArrayElement,
|
|
3006 |
|
|
3007 |
jni_NewBooleanArray,
|
|
3008 |
jni_NewByteArray,
|
|
3009 |
jni_NewCharArray,
|
|
3010 |
jni_NewShortArray,
|
|
3011 |
jni_NewIntArray,
|
|
3012 |
jni_NewLongArray,
|
|
3013 |
jni_NewFloatArray,
|
|
3014 |
jni_NewDoubleArray,
|
|
3015 |
|
|
3016 |
jni_GetBooleanArrayElements,
|
|
3017 |
jni_GetByteArrayElements,
|
|
3018 |
jni_GetCharArrayElements,
|
|
3019 |
jni_GetShortArrayElements,
|
|
3020 |
jni_GetIntArrayElements,
|
|
3021 |
jni_GetLongArrayElements,
|
|
3022 |
jni_GetFloatArrayElements,
|
|
3023 |
jni_GetDoubleArrayElements,
|
|
3024 |
|
|
3025 |
jni_ReleaseBooleanArrayElements,
|
|
3026 |
jni_ReleaseByteArrayElements,
|
|
3027 |
jni_ReleaseCharArrayElements,
|
|
3028 |
jni_ReleaseShortArrayElements,
|
|
3029 |
jni_ReleaseIntArrayElements,
|
|
3030 |
jni_ReleaseLongArrayElements,
|
|
3031 |
jni_ReleaseFloatArrayElements,
|
|
3032 |
jni_ReleaseDoubleArrayElements,
|
|
3033 |
|
|
3034 |
jni_GetBooleanArrayRegion,
|
|
3035 |
jni_GetByteArrayRegion,
|
|
3036 |
jni_GetCharArrayRegion,
|
|
3037 |
jni_GetShortArrayRegion,
|
|
3038 |
jni_GetIntArrayRegion,
|
|
3039 |
jni_GetLongArrayRegion,
|
|
3040 |
jni_GetFloatArrayRegion,
|
|
3041 |
jni_GetDoubleArrayRegion,
|
|
3042 |
|
|
3043 |
jni_SetBooleanArrayRegion,
|
|
3044 |
jni_SetByteArrayRegion,
|
|
3045 |
jni_SetCharArrayRegion,
|
|
3046 |
jni_SetShortArrayRegion,
|
|
3047 |
jni_SetIntArrayRegion,
|
|
3048 |
jni_SetLongArrayRegion,
|
|
3049 |
jni_SetFloatArrayRegion,
|
|
3050 |
jni_SetDoubleArrayRegion,
|
|
3051 |
|
|
3052 |
jni_RegisterNatives,
|
|
3053 |
jni_UnregisterNatives,
|
|
3054 |
|
|
3055 |
jni_MonitorEnter,
|
|
3056 |
jni_MonitorExit,
|
|
3057 |
|
|
3058 |
jni_GetJavaVM,
|
|
3059 |
|
|
3060 |
jni_GetStringRegion,
|
|
3061 |
jni_GetStringUTFRegion,
|
|
3062 |
|
|
3063 |
jni_GetPrimitiveArrayCritical,
|
|
3064 |
jni_ReleasePrimitiveArrayCritical,
|
|
3065 |
|
|
3066 |
jni_GetStringCritical,
|
|
3067 |
jni_ReleaseStringCritical,
|
|
3068 |
|
|
3069 |
jni_NewWeakGlobalRef,
|
|
3070 |
jni_DeleteWeakGlobalRef,
|
|
3071 |
|
|
3072 |
jni_ExceptionCheck,
|
|
3073 |
|
|
3074 |
jni_NewDirectByteBuffer,
|
|
3075 |
jni_GetDirectBufferAddress,
|
|
3076 |
jni_GetDirectBufferCapacity,
|
|
3077 |
|
|
3078 |
// New 1_6 features
|
|
3079 |
|
|
3080 |
jni_GetObjectRefType
|
|
3081 |
};
|
|
3082 |
|
|
3083 |
|
|
3084 |
// For jvmti use to modify jni function table.
|
|
3085 |
// Java threads in native contiues to run until it is transitioned
|
|
3086 |
// to VM at safepoint. Before the transition or before it is blocked
|
|
3087 |
// for safepoint it may access jni function table. VM could crash if
|
|
3088 |
// any java thread access the jni function table in the middle of memcpy.
|
|
3089 |
// To avoid this each function pointers are copied automically.
|
|
3090 |
void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) {
|
|
3091 |
assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
|
|
3092 |
intptr_t *a = (intptr_t *) jni_functions();
|
|
3093 |
intptr_t *b = (intptr_t *) new_jni_NativeInterface;
|
|
3094 |
for (uint i=0; i < sizeof(struct JNINativeInterface_)/sizeof(void *); i++) {
|
|
3095 |
Atomic::store_ptr(*b++, a++);
|
|
3096 |
}
|
|
3097 |
}
|
|
3098 |
|
|
3099 |
void quicken_jni_functions() {
|
|
3100 |
// Replace Get<Primitive>Field with fast versions
|
|
3101 |
if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access()
|
|
3102 |
&& !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls
|
|
3103 |
#if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2)
|
|
3104 |
// windows x86 currently needs SEH wrapper and the gain of the fast
|
|
3105 |
// versions currently isn't certain for server vm on uniprocessor.
|
|
3106 |
&& os::is_MP()
|
|
3107 |
#endif
|
|
3108 |
) {
|
|
3109 |
address func;
|
|
3110 |
func = JNI_FastGetField::generate_fast_get_boolean_field();
|
|
3111 |
if (func != (address)-1) {
|
|
3112 |
jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func;
|
|
3113 |
}
|
|
3114 |
func = JNI_FastGetField::generate_fast_get_byte_field();
|
|
3115 |
if (func != (address)-1) {
|
|
3116 |
jni_NativeInterface.GetByteField = (GetByteField_t)func;
|
|
3117 |
}
|
|
3118 |
func = JNI_FastGetField::generate_fast_get_char_field();
|
|
3119 |
if (func != (address)-1) {
|
|
3120 |
jni_NativeInterface.GetCharField = (GetCharField_t)func;
|
|
3121 |
}
|
|
3122 |
func = JNI_FastGetField::generate_fast_get_short_field();
|
|
3123 |
if (func != (address)-1) {
|
|
3124 |
jni_NativeInterface.GetShortField = (GetShortField_t)func;
|
|
3125 |
}
|
|
3126 |
func = JNI_FastGetField::generate_fast_get_int_field();
|
|
3127 |
if (func != (address)-1) {
|
|
3128 |
jni_NativeInterface.GetIntField = (GetIntField_t)func;
|
|
3129 |
}
|
|
3130 |
func = JNI_FastGetField::generate_fast_get_long_field();
|
|
3131 |
if (func != (address)-1) {
|
|
3132 |
jni_NativeInterface.GetLongField = (GetLongField_t)func;
|
|
3133 |
}
|
|
3134 |
func = JNI_FastGetField::generate_fast_get_float_field();
|
|
3135 |
if (func != (address)-1) {
|
|
3136 |
jni_NativeInterface.GetFloatField = (GetFloatField_t)func;
|
|
3137 |
}
|
|
3138 |
func = JNI_FastGetField::generate_fast_get_double_field();
|
|
3139 |
if (func != (address)-1) {
|
|
3140 |
jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func;
|
|
3141 |
}
|
|
3142 |
}
|
|
3143 |
}
|
|
3144 |
|
|
3145 |
// Returns the function structure
|
|
3146 |
struct JNINativeInterface_* jni_functions() {
|
|
3147 |
#ifndef JNICHECK_KERNEL
|
|
3148 |
if (CheckJNICalls) return jni_functions_check();
|
|
3149 |
#else // JNICHECK_KERNEL
|
|
3150 |
if (CheckJNICalls) warning("-Xcheck:jni is not supported in kernel vm.");
|
|
3151 |
#endif // JNICHECK_KERNEL
|
|
3152 |
return &jni_NativeInterface;
|
|
3153 |
}
|
|
3154 |
|
|
3155 |
// Returns the function structure
|
|
3156 |
struct JNINativeInterface_* jni_functions_nocheck() {
|
|
3157 |
return &jni_NativeInterface;
|
|
3158 |
}
|
|
3159 |
|
|
3160 |
|
|
3161 |
// Invocation API
|
|
3162 |
|
|
3163 |
|
|
3164 |
// Forward declaration
|
|
3165 |
extern const struct JNIInvokeInterface_ jni_InvokeInterface;
|
|
3166 |
|
|
3167 |
// Global invocation API vars
|
|
3168 |
volatile jint vm_created = 0;
|
|
3169 |
// Indicate whether it is safe to recreate VM
|
|
3170 |
volatile jint safe_to_recreate_vm = 1;
|
|
3171 |
struct JavaVM_ main_vm = {&jni_InvokeInterface};
|
|
3172 |
|
|
3173 |
|
|
3174 |
#define JAVASTACKSIZE (400 * 1024) /* Default size of a thread java stack */
|
|
3175 |
#define PROCSTACKSIZE 0 /* 0 means default size in HPI */
|
|
3176 |
enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL };
|
|
3177 |
|
|
3178 |
HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*);
|
|
3179 |
DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint);
|
|
3180 |
|
|
3181 |
_JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) {
|
|
3182 |
HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_);
|
|
3183 |
JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_;
|
|
3184 |
jint ret = JNI_ERR;
|
|
3185 |
DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret);
|
|
3186 |
|
|
3187 |
if (Threads::is_supported_jni_version(args->version)) {
|
|
3188 |
ret = JNI_OK;
|
|
3189 |
}
|
|
3190 |
// 1.1 style no longer supported in hotspot.
|
|
3191 |
// According the JNI spec, we should update args->version on return.
|
|
3192 |
// We also use the structure to communicate with launcher about default
|
|
3193 |
// stack size.
|
|
3194 |
if (args->version == JNI_VERSION_1_1) {
|
|
3195 |
args->version = JNI_VERSION_1_2;
|
|
3196 |
// javaStackSize is int in arguments structure
|
|
3197 |
assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow");
|
|
3198 |
args->javaStackSize = (jint)(ThreadStackSize * K);
|
|
3199 |
}
|
|
3200 |
return ret;
|
|
3201 |
}
|
|
3202 |
|
|
3203 |
HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
|
|
3204 |
DT_RETURN_MARK_DECL(CreateJavaVM, jint);
|
|
3205 |
|
|
3206 |
_JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) {
|
|
3207 |
HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
|
|
3208 |
|
|
3209 |
jint result = JNI_ERR;
|
|
3210 |
DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result);
|
|
3211 |
|
|
3212 |
// At the moment it's only possible to have one Java VM,
|
|
3213 |
// since some of the runtime state is in global variables.
|
|
3214 |
|
|
3215 |
// We cannot use our mutex locks here, since they only work on
|
|
3216 |
// Threads. We do an atomic compare and exchange to ensure only
|
|
3217 |
// one thread can call this method at a time
|
|
3218 |
|
|
3219 |
// We use Atomic::xchg rather than Atomic::add/dec since on some platforms
|
|
3220 |
// the add/dec implementations are dependent on whether we are running
|
|
3221 |
// on a multiprocessor, and at this stage of initialization the os::is_MP
|
|
3222 |
// function used to determine this will always return false. Atomic::xchg
|
|
3223 |
// does not have this problem.
|
|
3224 |
if (Atomic::xchg(1, &vm_created) == 1) {
|
|
3225 |
return JNI_ERR; // already created, or create attempt in progress
|
|
3226 |
}
|
|
3227 |
if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) {
|
|
3228 |
return JNI_ERR; // someone tried and failed and retry not allowed.
|
|
3229 |
}
|
|
3230 |
|
|
3231 |
assert(vm_created == 1, "vm_created is true during the creation");
|
|
3232 |
|
|
3233 |
/**
|
|
3234 |
* Certain errors during initialization are recoverable and do not
|
|
3235 |
* prevent this method from being called again at a later time
|
|
3236 |
* (perhaps with different arguments). However, at a certain
|
|
3237 |
* point during initialization if an error occurs we cannot allow
|
|
3238 |
* this function to be called again (or it will crash). In those
|
|
3239 |
* situations, the 'canTryAgain' flag is set to false, which atomically
|
|
3240 |
* sets safe_to_recreate_vm to 1, such that any new call to
|
|
3241 |
* JNI_CreateJavaVM will immediately fail using the above logic.
|
|
3242 |
*/
|
|
3243 |
bool can_try_again = true;
|
|
3244 |
|
|
3245 |
result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again);
|
|
3246 |
if (result == JNI_OK) {
|
|
3247 |
JavaThread *thread = JavaThread::current();
|
|
3248 |
/* thread is thread_in_vm here */
|
|
3249 |
*vm = (JavaVM *)(&main_vm);
|
|
3250 |
*(JNIEnv**)penv = thread->jni_environment();
|
|
3251 |
|
|
3252 |
// Tracks the time application was running before GC
|
|
3253 |
RuntimeService::record_application_start();
|
|
3254 |
|
|
3255 |
// Notify JVMTI
|
|
3256 |
if (JvmtiExport::should_post_thread_life()) {
|
|
3257 |
JvmtiExport::post_thread_start(thread);
|
|
3258 |
}
|
|
3259 |
// Check if we should compile all classes on bootclasspath
|
|
3260 |
NOT_PRODUCT(if (CompileTheWorld) ClassLoader::compile_the_world();)
|
|
3261 |
// Since this is not a JVM_ENTRY we have to set the thread state manually before leaving.
|
|
3262 |
ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
|
|
3263 |
} else {
|
|
3264 |
if (can_try_again) {
|
|
3265 |
// reset safe_to_recreate_vm to 1 so that retrial would be possible
|
|
3266 |
safe_to_recreate_vm = 1;
|
|
3267 |
}
|
|
3268 |
|
|
3269 |
// Creation failed. We must reset vm_created
|
|
3270 |
*vm = 0;
|
|
3271 |
*(JNIEnv**)penv = 0;
|
|
3272 |
// reset vm_created last to avoid race condition. Use OrderAccess to
|
|
3273 |
// control both compiler and architectural-based reordering.
|
|
3274 |
OrderAccess::release_store(&vm_created, 0);
|
|
3275 |
}
|
|
3276 |
|
|
3277 |
return result;
|
|
3278 |
}
|
|
3279 |
|
|
3280 |
HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \
|
|
3281 |
JavaVM**, jsize, jsize*);
|
|
3282 |
HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint);
|
|
3283 |
|
|
3284 |
_JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) {
|
|
3285 |
// See bug 4367188, the wrapper can sometimes cause VM crashes
|
|
3286 |
// JNIWrapper("GetCreatedJavaVMs");
|
|
3287 |
HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \
|
|
3288 |
vm_buf, bufLen, numVMs);
|
|
3289 |
if (vm_created) {
|
|
3290 |
if (numVMs != NULL) *numVMs = 1;
|
|
3291 |
if (bufLen > 0) *vm_buf = (JavaVM *)(&main_vm);
|
|
3292 |
} else {
|
|
3293 |
if (numVMs != NULL) *numVMs = 0;
|
|
3294 |
}
|
|
3295 |
HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK);
|
|
3296 |
return JNI_OK;
|
|
3297 |
}
|
|
3298 |
|
|
3299 |
extern "C" {
|
|
3300 |
|
|
3301 |
DT_RETURN_MARK_DECL(DestroyJavaVM, jint);
|
|
3302 |
|
|
3303 |
jint JNICALL jni_DestroyJavaVM(JavaVM *vm) {
|
|
3304 |
DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm);
|
|
3305 |
jint res = JNI_ERR;
|
|
3306 |
DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res);
|
|
3307 |
|
|
3308 |
if (!vm_created) {
|
|
3309 |
res = JNI_ERR;
|
|
3310 |
return res;
|
|
3311 |
}
|
|
3312 |
|
|
3313 |
JNIWrapper("DestroyJavaVM");
|
|
3314 |
JNIEnv *env;
|
|
3315 |
JavaVMAttachArgs destroyargs;
|
|
3316 |
destroyargs.version = CurrentVersion;
|
|
3317 |
destroyargs.name = (char *)"DestroyJavaVM";
|
|
3318 |
destroyargs.group = NULL;
|
|
3319 |
res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs);
|
|
3320 |
if (res != JNI_OK) {
|
|
3321 |
return res;
|
|
3322 |
}
|
|
3323 |
|
|
3324 |
// Since this is not a JVM_ENTRY we have to set the thread state manually before entering.
|
|
3325 |
JavaThread* thread = JavaThread::current();
|
|
3326 |
ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
|
|
3327 |
if (Threads::destroy_vm()) {
|
|
3328 |
// Should not change thread state, VM is gone
|
|
3329 |
vm_created = false;
|
|
3330 |
res = JNI_OK;
|
|
3331 |
return res;
|
|
3332 |
} else {
|
|
3333 |
ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
|
|
3334 |
res = JNI_ERR;
|
|
3335 |
return res;
|
|
3336 |
}
|
|
3337 |
}
|
|
3338 |
|
|
3339 |
|
|
3340 |
static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) {
|
|
3341 |
JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args;
|
|
3342 |
|
|
3343 |
// Check below commented out from JDK1.2fcs as well
|
|
3344 |
/*
|
|
3345 |
if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) {
|
|
3346 |
return JNI_EVERSION;
|
|
3347 |
}
|
|
3348 |
*/
|
|
3349 |
|
|
3350 |
Thread* t = ThreadLocalStorage::get_thread_slow();
|
|
3351 |
if (t != NULL) {
|
|
3352 |
// If the thread has been attached this operation is a no-op
|
|
3353 |
*(JNIEnv**)penv = ((JavaThread*) t)->jni_environment();
|
|
3354 |
return JNI_OK;
|
|
3355 |
}
|
|
3356 |
|
|
3357 |
// Create a thread and mark it as attaching so it will be skipped by the
|
|
3358 |
// ThreadsListEnumerator - see CR 6404306
|
|
3359 |
JavaThread* thread = new JavaThread(true);
|
|
3360 |
|
|
3361 |
// Set correct safepoint info. The thread is going to call into Java when
|
|
3362 |
// initializing the Java level thread object. Hence, the correct state must
|
|
3363 |
// be set in order for the Safepoint code to deal with it correctly.
|
|
3364 |
thread->set_thread_state(_thread_in_vm);
|
|
3365 |
// Must do this before initialize_thread_local_storage
|
|
3366 |
thread->record_stack_base_and_size();
|
|
3367 |
thread->initialize_thread_local_storage();
|
|
3368 |
|
|
3369 |
if (!os::create_attached_thread(thread)) {
|
|
3370 |
delete thread;
|
|
3371 |
return JNI_ERR;
|
|
3372 |
}
|
|
3373 |
thread->initialize_tlab();
|
|
3374 |
|
|
3375 |
// Crucial that we do not have a safepoint check for this thread, since it has
|
|
3376 |
// not been added to the Thread list yet.
|
|
3377 |
{ Threads_lock->lock_without_safepoint_check();
|
|
3378 |
// This must be inside this lock in order to get FullGCALot to work properly, i.e., to
|
|
3379 |
// avoid this thread trying to do a GC before it is added to the thread-list
|
|
3380 |
thread->set_active_handles(JNIHandleBlock::allocate_block());
|
|
3381 |
Threads::add(thread, daemon);
|
|
3382 |
Threads_lock->unlock();
|
|
3383 |
}
|
|
3384 |
// Create thread group and name info from attach arguments
|
|
3385 |
oop group = NULL;
|
|
3386 |
char* thread_name = NULL;
|
|
3387 |
if (args != NULL && Threads::is_supported_jni_version(args->version)) {
|
|
3388 |
group = JNIHandles::resolve(args->group);
|
|
3389 |
thread_name = args->name; // may be NULL
|
|
3390 |
}
|
|
3391 |
if (group == NULL) group = Universe::main_thread_group();
|
|
3392 |
|
|
3393 |
// Create Java level thread object and attach it to this thread
|
|
3394 |
bool attach_failed = false;
|
|
3395 |
{
|
|
3396 |
EXCEPTION_MARK;
|
|
3397 |
HandleMark hm(THREAD);
|
|
3398 |
Handle thread_group(THREAD, group);
|
|
3399 |
thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD);
|
|
3400 |
if (HAS_PENDING_EXCEPTION) {
|
|
3401 |
CLEAR_PENDING_EXCEPTION;
|
|
3402 |
// cleanup outside the handle mark.
|
|
3403 |
attach_failed = true;
|
|
3404 |
}
|
|
3405 |
}
|
|
3406 |
|
|
3407 |
if (attach_failed) {
|
|
3408 |
// Added missing cleanup
|
|
3409 |
thread->cleanup_failed_attach_current_thread();
|
|
3410 |
return JNI_ERR;
|
|
3411 |
}
|
|
3412 |
|
|
3413 |
// mark the thread as no longer attaching
|
|
3414 |
// this uses a fence to push the change through so we don't have
|
|
3415 |
// to regrab the threads_lock
|
|
3416 |
thread->set_attached();
|
|
3417 |
|
|
3418 |
// Enable stack overflow checks
|
|
3419 |
thread->create_stack_guard_pages();
|
|
3420 |
|
|
3421 |
// Set java thread status.
|
|
3422 |
java_lang_Thread::set_thread_status(thread->threadObj(),
|
|
3423 |
java_lang_Thread::RUNNABLE);
|
|
3424 |
|
|
3425 |
// Notify the debugger
|
|
3426 |
if (JvmtiExport::should_post_thread_life()) {
|
|
3427 |
JvmtiExport::post_thread_start(thread);
|
|
3428 |
}
|
|
3429 |
|
|
3430 |
*(JNIEnv**)penv = thread->jni_environment();
|
|
3431 |
|
|
3432 |
// Now leaving the VM, so change thread_state. This is normally automatically taken care
|
|
3433 |
// of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by
|
|
3434 |
// using ThreadStateTransition::transition, we do a callback to the safepoint code if
|
|
3435 |
// needed.
|
|
3436 |
|
|
3437 |
ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
|
|
3438 |
|
|
3439 |
// Perform any platform dependent FPU setup
|
|
3440 |
os::setup_fpu();
|
|
3441 |
|
|
3442 |
return JNI_OK;
|
|
3443 |
}
|
|
3444 |
|
|
3445 |
|
|
3446 |
jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) {
|
|
3447 |
DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args);
|
|
3448 |
if (!vm_created) {
|
|
3449 |
DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR);
|
|
3450 |
return JNI_ERR;
|
|
3451 |
}
|
|
3452 |
|
|
3453 |
JNIWrapper("AttachCurrentThread");
|
|
3454 |
jint ret = attach_current_thread(vm, penv, _args, false);
|
|
3455 |
DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret);
|
|
3456 |
return ret;
|
|
3457 |
}
|
|
3458 |
|
|
3459 |
|
|
3460 |
jint JNICALL jni_DetachCurrentThread(JavaVM *vm) {
|
|
3461 |
DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm);
|
|
3462 |
VM_Exit::block_if_vm_exited();
|
|
3463 |
|
|
3464 |
JNIWrapper("DetachCurrentThread");
|
|
3465 |
|
|
3466 |
// If the thread has been deattacted the operations is a no-op
|
|
3467 |
if (ThreadLocalStorage::thread() == NULL) {
|
|
3468 |
DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
|
|
3469 |
return JNI_OK;
|
|
3470 |
}
|
|
3471 |
|
|
3472 |
JavaThread* thread = JavaThread::current();
|
|
3473 |
if (thread->has_last_Java_frame()) {
|
|
3474 |
DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR);
|
|
3475 |
// Can't detach a thread that's running java, that can't work.
|
|
3476 |
return JNI_ERR;
|
|
3477 |
}
|
|
3478 |
|
|
3479 |
// Safepoint support. Have to do call-back to safepoint code, if in the
|
|
3480 |
// middel of a safepoint operation
|
|
3481 |
ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
|
|
3482 |
|
|
3483 |
// XXX: Note that JavaThread::exit() call below removes the guards on the
|
|
3484 |
// stack pages set up via enable_stack_{red,yellow}_zone() calls
|
|
3485 |
// above in jni_AttachCurrentThread. Unfortunately, while the setting
|
|
3486 |
// of the guards is visible in jni_AttachCurrentThread above,
|
|
3487 |
// the removal of the guards is buried below in JavaThread::exit()
|
|
3488 |
// here. The abstraction should be more symmetrically either exposed
|
|
3489 |
// or hidden (e.g. it could probably be hidden in the same
|
|
3490 |
// (platform-dependent) methods where we do alternate stack
|
|
3491 |
// maintenance work?)
|
|
3492 |
thread->exit(false, JavaThread::jni_detach);
|
|
3493 |
delete thread;
|
|
3494 |
|
|
3495 |
DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
|
|
3496 |
return JNI_OK;
|
|
3497 |
}
|
|
3498 |
|
|
3499 |
DT_RETURN_MARK_DECL(GetEnv, jint);
|
|
3500 |
|
|
3501 |
jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) {
|
|
3502 |
DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version);
|
|
3503 |
jint ret = JNI_ERR;
|
|
3504 |
DT_RETURN_MARK(GetEnv, jint, (const jint&)ret);
|
|
3505 |
|
|
3506 |
if (!vm_created) {
|
|
3507 |
*penv = NULL;
|
|
3508 |
ret = JNI_EDETACHED;
|
|
3509 |
return ret;
|
|
3510 |
}
|
|
3511 |
|
|
3512 |
if (JvmtiExport::is_jvmti_version(version)) {
|
|
3513 |
ret = JvmtiExport::get_jvmti_interface(vm, penv, version);
|
|
3514 |
return ret;
|
|
3515 |
}
|
|
3516 |
|
|
3517 |
#ifndef JVMPI_VERSION_1
|
|
3518 |
// need these in order to be polite about older agents
|
|
3519 |
#define JVMPI_VERSION_1 ((jint)0x10000001)
|
|
3520 |
#define JVMPI_VERSION_1_1 ((jint)0x10000002)
|
|
3521 |
#define JVMPI_VERSION_1_2 ((jint)0x10000003)
|
|
3522 |
#endif // !JVMPI_VERSION_1
|
|
3523 |
|
|
3524 |
Thread* thread = ThreadLocalStorage::thread();
|
|
3525 |
if (thread != NULL && thread->is_Java_thread()) {
|
|
3526 |
if (Threads::is_supported_jni_version_including_1_1(version)) {
|
|
3527 |
*(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment();
|
|
3528 |
ret = JNI_OK;
|
|
3529 |
return ret;
|
|
3530 |
|
|
3531 |
} else if (version == JVMPI_VERSION_1 ||
|
|
3532 |
version == JVMPI_VERSION_1_1 ||
|
|
3533 |
version == JVMPI_VERSION_1_2) {
|
|
3534 |
tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported.");
|
|
3535 |
tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
|
|
3536 |
ret = JNI_EVERSION;
|
|
3537 |
return ret;
|
|
3538 |
} else if (JvmtiExport::is_jvmdi_version(version)) {
|
|
3539 |
tty->print_cr("FATAL ERROR: JVMDI is no longer supported.");
|
|
3540 |
tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
|
|
3541 |
ret = JNI_EVERSION;
|
|
3542 |
return ret;
|
|
3543 |
} else {
|
|
3544 |
*penv = NULL;
|
|
3545 |
ret = JNI_EVERSION;
|
|
3546 |
return ret;
|
|
3547 |
}
|
|
3548 |
} else {
|
|
3549 |
*penv = NULL;
|
|
3550 |
ret = JNI_EDETACHED;
|
|
3551 |
return ret;
|
|
3552 |
}
|
|
3553 |
}
|
|
3554 |
|
|
3555 |
|
|
3556 |
jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) {
|
|
3557 |
DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args);
|
|
3558 |
if (!vm_created) {
|
|
3559 |
DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR);
|
|
3560 |
return JNI_ERR;
|
|
3561 |
}
|
|
3562 |
|
|
3563 |
JNIWrapper("AttachCurrentThreadAsDaemon");
|
|
3564 |
jint ret = attach_current_thread(vm, penv, _args, true);
|
|
3565 |
DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret);
|
|
3566 |
return ret;
|
|
3567 |
}
|
|
3568 |
|
|
3569 |
|
|
3570 |
} // End extern "C"
|
|
3571 |
|
|
3572 |
const struct JNIInvokeInterface_ jni_InvokeInterface = {
|
|
3573 |
NULL,
|
|
3574 |
NULL,
|
|
3575 |
NULL,
|
|
3576 |
|
|
3577 |
jni_DestroyJavaVM,
|
|
3578 |
jni_AttachCurrentThread,
|
|
3579 |
jni_DetachCurrentThread,
|
|
3580 |
jni_GetEnv,
|
|
3581 |
jni_AttachCurrentThreadAsDaemon
|
|
3582 |
};
|