src/share/vm/prims/jniCheck.cpp

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   1 /*
   2  * Copyright (c) 2001, 2009, 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 # include "incls/_precompiled.incl"
  26 # include "incls/_jniCheck.cpp.incl"





















  27 
  28 
  29 // Heap objects are allowed to be directly referenced only in VM code,
  30 // not in native code.
  31 
  32 #define ASSERT_OOPS_ALLOWED                                          \
  33     assert(JavaThread::current()->thread_state() == _thread_in_vm,   \
  34            "jniCheck examining oops in bad state.")
  35 
  36 
  37 // Execute the given block of source code with the thread in VM state.
  38 // To do this, transition from the NATIVE state to the VM state, execute
  39 // the code, and transtition back.  The ThreadInVMfromNative constructor
  40 // performs the transition to VM state, its destructor restores the
  41 // NATIVE state.
  42 
  43 #define IN_VM(source_code)   {                                         \
  44     {                                                                  \
  45       ThreadInVMfromNative __tiv(thr);                                 \
  46       source_code                                                      \


   1 /*
   2  * Copyright (c) 2001, 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 #include "precompiled.hpp"
  26 #include "classfile/systemDictionary.hpp"
  27 #include "classfile/vmSymbols.hpp"
  28 #include "oops/instanceKlass.hpp"
  29 #include "oops/oop.inline.hpp"
  30 #include "oops/symbolOop.hpp"
  31 #include "prims/jni.h"
  32 #include "prims/jniCheck.hpp"
  33 #include "prims/jvm_misc.hpp"
  34 #include "runtime/fieldDescriptor.hpp"
  35 #include "runtime/handles.hpp"
  36 #include "runtime/interfaceSupport.hpp"
  37 #include "runtime/jfieldIDWorkaround.hpp"
  38 #include "runtime/thread.hpp"
  39 #ifdef TARGET_ARCH_x86
  40 # include "jniTypes_x86.hpp"
  41 #endif
  42 #ifdef TARGET_ARCH_sparc
  43 # include "jniTypes_sparc.hpp"
  44 #endif
  45 #ifdef TARGET_ARCH_zero
  46 # include "jniTypes_zero.hpp"
  47 #endif
  48 
  49 
  50 // Heap objects are allowed to be directly referenced only in VM code,
  51 // not in native code.
  52 
  53 #define ASSERT_OOPS_ALLOWED                                          \
  54     assert(JavaThread::current()->thread_state() == _thread_in_vm,   \
  55            "jniCheck examining oops in bad state.")
  56 
  57 
  58 // Execute the given block of source code with the thread in VM state.
  59 // To do this, transition from the NATIVE state to the VM state, execute
  60 // the code, and transtition back.  The ThreadInVMfromNative constructor
  61 // performs the transition to VM state, its destructor restores the
  62 // NATIVE state.
  63 
  64 #define IN_VM(source_code)   {                                         \
  65     {                                                                  \
  66       ThreadInVMfromNative __tiv(thr);                                 \
  67       source_code                                                      \