1 /* 2 * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 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 #ifndef SHARE_VM_RUNTIME_HANDLES_INLINE_HPP 26 #define SHARE_VM_RUNTIME_HANDLES_INLINE_HPP 27 28 #include "runtime/handles.hpp" 29 #ifdef TARGET_OS_FAMILY_linux 30 # include "thread_linux.inline.hpp" 31 #endif 32 #ifdef TARGET_OS_FAMILY_solaris 33 # include "thread_solaris.inline.hpp" 34 #endif 35 #ifdef TARGET_OS_FAMILY_windows 36 # include "thread_windows.inline.hpp" 37 #endif 38 #ifdef TARGET_OS_FAMILY_bsd 39 # include "thread_bsd.inline.hpp" 40 #endif 41 42 // these inline functions are in a separate file to break an include cycle 43 // between Thread and Handle 44 45 inline Handle::Handle(oop obj) { 46 if (obj == NULL) { 47 _handle = NULL; 48 } else { 49 _handle = Thread::current()->handle_area()->allocate_handle(obj); 50 } 51 } 52 53 54 #ifndef ASSERT 55 inline Handle::Handle(Thread* thread, oop obj) { 56 assert(thread == Thread::current(), "sanity check"); 57 if (obj == NULL) { 58 _handle = NULL; 59 } else { 60 _handle = thread->handle_area()->allocate_handle(obj); 61 } 62 } 63 #endif // ASSERT 64 65 66 inline HandleMark::HandleMark() { 67 initialize(Thread::current()); 68 } 69 70 71 inline void HandleMark::push() { 72 // This is intentionally a NOP. pop_and_restore will reset 73 // values to the HandleMark further down the stack, typically 74 // in JavaCalls::call_helper. 75 debug_only(_area->_handle_mark_nesting++); 76 } 77 78 inline void HandleMark::pop_and_restore() { 79 HandleArea* area = _area; // help compilers with poor alias analysis 80 // Delete later chunks 81 if( _chunk->next() ) { 82 _chunk->next_chop(); 83 } 84 // Roll back arena to saved top markers 85 area->_chunk = _chunk; 86 area->_hwm = _hwm; 87 area->_max = _max; 88 NOT_PRODUCT(area->set_size_in_bytes(_size_in_bytes);) 89 debug_only(area->_handle_mark_nesting--); 90 } 91 92 #endif // SHARE_VM_RUNTIME_HANDLES_INLINE_HPP