| /* |
| * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| #ifndef _ALLOC_H_ |
| #define _ALLOC_H_ |
| |
| /* Use THIS_FILE when it is available. */ |
| #ifndef THIS_FILE |
| #define THIS_FILE __FILE__ |
| #endif |
| |
| #include "stdhdrs.h" |
| |
| // By defining std::bad_alloc in a local header file instead of including |
| // the Standard C++ <new> header file, we avoid making awt.dll dependent |
| // on msvcp50.dll. This reduces the size of the JRE by 500kb. |
| namespace std { |
| class bad_alloc {}; |
| } |
| |
| #define SIZECALC_ALLOC_THROWING_BAD_ALLOC |
| #include "sizecalc.h" |
| |
| class awt_toolkit_shutdown {}; |
| |
| // Disable "C++ Exception Specification ignored" warnings. |
| // These warnings are generated because VC++ 5.0 allows, but does not enforce, |
| // exception specifications. This #pragma can be safely removed when VC++ |
| // is updated to enforce exception specifications. |
| #pragma warning(disable : 4290) |
| |
| #ifdef TRY |
| #error Multiple definitions of TRY |
| #endif |
| |
| #ifdef TRY_NO_VERIFY |
| #error Multiple definitions of TRY_NO_VERIFY |
| #endif |
| |
| #ifdef CATCH_BAD_ALLOC |
| #error Multiple definitions of CATCH_BAD_ALLOC |
| #endif |
| |
| #ifdef CATCH_BAD_ALLOC_RET |
| #error Multiple defintions of CATCH_BAD_ALLOC_RET |
| #endif |
| |
| #ifdef TRY_NO_JNI |
| #error Multiple definitions of TRY_NO_JNI |
| #endif |
| |
| #ifdef TRY_NO_VERIFY_NO_JNI |
| #error Multiple definitions of TRY_NO_VERIFY_NO_JNI |
| #endif |
| |
| #ifdef CATCH_BAD_ALLOC_NO_JNI |
| #error Multiple definitions of CATCH_BAD_ALLOC_NO_JNI |
| #endif |
| |
| #ifdef CATCH_BAD_ALLOC_RET_NO_JNI |
| #error Multiple defintions of CATCH_BAD_ALLOC_RET_NO_JNI |
| #endif |
| |
| // The unsafe versions of malloc, calloc, and realloc should not be used |
| #define malloc Do_Not_Use_malloc_Use_safe_Malloc_Instead |
| #define calloc Do_Not_Use_calloc_Use_safe_Calloc_Instead |
| #define realloc Do_Not_Use_realloc_Use_safe_Realloc_Instead |
| #define ExceptionOccurred Do_Not_Use_ExceptionOccurred_Use_safe_\ |
| ExceptionOccurred_Instead |
| |
| // These three functions throw std::bad_alloc in an out of memory condition |
| // instead of returning 0. safe_Realloc will return 0 if memblock is not |
| // NULL and size is 0. safe_Malloc and safe_Calloc will never return 0. |
| void *safe_Malloc(size_t size) throw (std::bad_alloc); |
| void *safe_Calloc(size_t num, size_t size) throw (std::bad_alloc); |
| void *safe_Realloc(void *memblock, size_t size) throw (std::bad_alloc); |
| |
| // This function should be called instead of ExceptionOccurred. It throws |
| // std::bad_alloc if a java.lang.OutOfMemoryError is currently pending |
| // on the calling thread. |
| jthrowable safe_ExceptionOccurred(JNIEnv *env) throw (std::bad_alloc); |
| |
| // This function is called at the beginning of an entry point. |
| // Entry points are functions which are declared: |
| // 1. CALLBACK, |
| // 2. JNIEXPORT, |
| // 3. __declspec(dllexport), or |
| // 4. extern "C" |
| // A function which returns an HRESULT (an OLE function) is also an entry |
| // point. |
| void entry_point(void); |
| |
| // This function hangs indefinitely if the Toolkit is not active |
| void hang_if_shutdown(void); |
| |
| // This function throws awt_toolkit_shutdown if the Toolkit is not active |
| void throw_if_shutdown(void) throw (awt_toolkit_shutdown); |
| |
| // This function is called when a std::bad_alloc exception is caught |
| void handle_bad_alloc(void); |
| |
| // Uncomment to nondeterministically test OutOfMemory errors |
| // #define OUTOFMEM_TEST |
| |
| #ifdef OUTOFMEM_TEST |
| void *safe_Malloc_outofmem(size_t size, const char *, int) |
| throw (std::bad_alloc); |
| void *safe_Calloc_outofmem(size_t num, size_t size, const char *, int) |
| throw (std::bad_alloc); |
| void *safe_Realloc_outofmem(void *memblock, size_t size, const char *, int) |
| throw (std::bad_alloc); |
| void * CDECL operator new(size_t size, const char *, int) |
| throw (std::bad_alloc); |
| |
| #define safe_Malloc(size) \ |
| safe_Malloc_outofmem(size, THIS_FILE, __LINE__) |
| #define safe_Calloc(num, size) \ |
| safe_Calloc_outofmem(num, size, THIS_FILE, __LINE__) |
| #define safe_Realloc(memblock, size) \ |
| safe_Realloc_outofmem(memblock, size, THIS_FILE, __LINE__) |
| #define new new(THIS_FILE, __LINE__) |
| #endif /* OUTOFMEM_TEST */ |
| |
| #define TRY \ |
| try { \ |
| entry_point(); \ |
| hang_if_shutdown(); |
| // The _NO_HANG version of TRY causes the AWT native code to return to Java |
| // immediately if the Toolkit is not active. Normal AWT operations should |
| // never use this macro. It should only be used for cleanup routines where: |
| // (1) Hanging is not a valid option, because the method is called during |
| // execution of runFinalizersOnExit; and, (2) Execution of the method would |
| // generate a NullPointerException or other Exception. |
| #define TRY_NO_HANG \ |
| try { \ |
| entry_point(); \ |
| throw_if_shutdown(); |
| // The _NO_VERIFY version of TRY does not verify that the Toolkit is still |
| // active before proceeding. Normal AWT operations should never use this |
| // macro. It should only be used for cleanup routines which can safely |
| // execute after the Toolkit is disposed, and then only with caution. Users |
| // of this macro must be able to guarantee that the code which will execute |
| // will not generate a NullPointerException or other Exception. |
| #define TRY_NO_VERIFY \ |
| try { \ |
| entry_point(); |
| #define CATCH_BAD_ALLOC \ |
| } catch (std::bad_alloc&) { \ |
| handle_bad_alloc(); \ |
| return; \ |
| } catch (awt_toolkit_shutdown&) {\ |
| return; \ |
| } |
| #define CATCH_BAD_ALLOC_RET(x) \ |
| } catch (std::bad_alloc&) { \ |
| handle_bad_alloc(); \ |
| return (x); \ |
| } catch (awt_toolkit_shutdown&) {\ |
| return (0); \ |
| } |
| |
| // The _NO_JNI versions of TRY and CATCH_BAD_ALLOC simply discard |
| // std::bad_alloc exceptions and thus should be avoided at all costs. They |
| // are only useful if the calling function currently holds the JNI lock |
| // for the thread. This lock is acquired by calling GetPrimitiveArrayCritical |
| // or GetStringCritical. No JNI function should be called by that thread |
| // until the corresponding Release function has been called. |
| |
| #define TRY_NO_JNI \ |
| try { \ |
| hang_if_shutdown(); |
| #define TRY_NO_HANG_NO_JNI \ |
| try { \ |
| throw_if_shutdown(); |
| #define TRY_NO_VERIFY_NO_JNI \ |
| try { |
| #define CATCH_BAD_ALLOC_NO_JNI \ |
| } catch (std::bad_alloc&) { \ |
| return; \ |
| } catch (awt_toolkit_shutdown&) {\ |
| return; \ |
| } |
| #define CATCH_BAD_ALLOC_RET_NO_JNI(x) \ |
| } catch (std::bad_alloc&) { \ |
| return (x); \ |
| } catch (awt_toolkit_shutdown&) {\ |
| return (0); \ |
| } |
| |
| #endif /* _ALLOC_H_ */ |