5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "incls/_precompiled.incl" 26 #include "incls/_parse3.cpp.incl" 27 28 //============================================================================= 29 // Helper methods for _get* and _put* bytecodes 30 //============================================================================= 31 bool Parse::static_field_ok_in_clinit(ciField *field, ciMethod *method) { 32 // Could be the field_holder's <clinit> method, or <clinit> for a subklass. 33 // Better to check now than to Deoptimize as soon as we execute 34 assert( field->is_static(), "Only check if field is static"); 35 // is_being_initialized() is too generous. It allows access to statics 36 // by threads that are not running the <clinit> before the <clinit> finishes. 37 // return field->holder()->is_being_initialized(); 38 39 // The following restriction is correct but conservative. 40 // It is also desirable to allow compilation of methods called from <clinit> 41 // but this generated code will need to be made safe for execution by 42 // other threads, or the transition from interpreted to compiled code would 43 // need to be guarded. 44 ciInstanceKlass *field_holder = field->holder(); 45 46 bool access_OK = false; | 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "compiler/compileLog.hpp" 27 #include "interpreter/linkResolver.hpp" 28 #include "memory/universe.inline.hpp" 29 #include "oops/objArrayKlass.hpp" 30 #include "opto/addnode.hpp" 31 #include "opto/memnode.hpp" 32 #include "opto/parse.hpp" 33 #include "opto/rootnode.hpp" 34 #include "opto/runtime.hpp" 35 #include "opto/subnode.hpp" 36 #include "runtime/deoptimization.hpp" 37 #include "runtime/handles.inline.hpp" 38 39 //============================================================================= 40 // Helper methods for _get* and _put* bytecodes 41 //============================================================================= 42 bool Parse::static_field_ok_in_clinit(ciField *field, ciMethod *method) { 43 // Could be the field_holder's <clinit> method, or <clinit> for a subklass. 44 // Better to check now than to Deoptimize as soon as we execute 45 assert( field->is_static(), "Only check if field is static"); 46 // is_being_initialized() is too generous. It allows access to statics 47 // by threads that are not running the <clinit> before the <clinit> finishes. 48 // return field->holder()->is_being_initialized(); 49 50 // The following restriction is correct but conservative. 51 // It is also desirable to allow compilation of methods called from <clinit> 52 // but this generated code will need to be made safe for execution by 53 // other threads, or the transition from interpreted to compiled code would 54 // need to be guarded. 55 ciInstanceKlass *field_holder = field->holder(); 56 57 bool access_OK = false; |