michael@0: /*
michael@0: ******************************************************************************
michael@0: *
michael@0: *   Copyright (C) 2002-2012, International Business Machines
michael@0: *   Corporation and others.  All Rights Reserved.
michael@0: *
michael@0: ******************************************************************************
michael@0: *   file name:  uobject.h
michael@0: *   encoding:   US-ASCII
michael@0: *   tab size:   8 (not used)
michael@0: *   indentation:4
michael@0: *
michael@0: *   created on: 2002jun26
michael@0: *   created by: Markus W. Scherer
michael@0: */
michael@0: 
michael@0: #include "unicode/uobject.h"
michael@0: #include "cmemory.h"
michael@0: 
michael@0: U_NAMESPACE_BEGIN
michael@0: 
michael@0: #if U_OVERRIDE_CXX_ALLOCATION
michael@0: 
michael@0: /*
michael@0:  * Default implementation of UMemory::new/delete
michael@0:  * using uprv_malloc() and uprv_free().
michael@0:  *
michael@0:  * For testing, this is used together with a list of imported symbols to verify
michael@0:  * that ICU is not using the global ::new and ::delete operators.
michael@0:  *
michael@0:  * These operators can be implemented like this or any other appropriate way
michael@0:  * when customizing ICU for certain environments.
michael@0:  * Whenever ICU is customized in binary incompatible ways please be sure
michael@0:  * to use library name suffixes to distinguish such libraries from
michael@0:  * the standard build.
michael@0:  *
michael@0:  * Instead of just modifying these C++ new/delete operators, it is usually best
michael@0:  * to modify the uprv_malloc()/uprv_free()/uprv_realloc() functions in cmemory.c.
michael@0:  *
michael@0:  * Memory test on Windows/MSVC 6:
michael@0:  * The global operators new and delete look as follows:
michael@0:  *   04F 00000000 UNDEF  notype ()    External     | ??2@YAPAXI@Z (void * __cdecl operator new(unsigned int))
michael@0:  *   03F 00000000 UNDEF  notype ()    External     | ??3@YAXPAX@Z (void __cdecl operator delete(void *))
michael@0:  *
michael@0:  * These lines are from output generated by the MSVC 6 tool dumpbin with
michael@0:  * dumpbin /symbols *.obj
michael@0:  *
michael@0:  * ??2@YAPAXI@Z and ??3@YAXPAX@Z are the linker symbols in the .obj
michael@0:  * files and are imported from msvcrtd.dll (in a debug build).
michael@0:  *
michael@0:  * Make sure that with the UMemory operators new and delete defined these two symbols
michael@0:  * do not appear in the dumpbin /symbols output for the ICU libraries!
michael@0:  *
michael@0:  * If such a symbol appears in the output then look in the preceding lines in the output
michael@0:  * for which file and function calls the global new or delete operator,
michael@0:  * and replace with uprv_malloc/uprv_free.
michael@0:  */
michael@0: 
michael@0: void * U_EXPORT2 UMemory::operator new(size_t size) U_NO_THROW {
michael@0:     return uprv_malloc(size);
michael@0: }
michael@0: 
michael@0: void U_EXPORT2 UMemory::operator delete(void *p) U_NO_THROW {
michael@0:     if(p!=NULL) {
michael@0:         uprv_free(p);
michael@0:     }
michael@0: }
michael@0: 
michael@0: void * U_EXPORT2 UMemory::operator new[](size_t size) U_NO_THROW {
michael@0:     return uprv_malloc(size);
michael@0: }
michael@0: 
michael@0: void U_EXPORT2 UMemory::operator delete[](void *p) U_NO_THROW {
michael@0:     if(p!=NULL) {
michael@0:         uprv_free(p);
michael@0:     }
michael@0: }
michael@0: 
michael@0: #if U_HAVE_DEBUG_LOCATION_NEW
michael@0: void * U_EXPORT2 UMemory::operator new(size_t size, const char* /*file*/, int /*line*/) U_NO_THROW {
michael@0:     return UMemory::operator new(size);
michael@0: }
michael@0: 
michael@0: void U_EXPORT2 UMemory::operator delete(void* p, const char* /*file*/, int /*line*/) U_NO_THROW {
michael@0:     UMemory::operator delete(p);
michael@0: }
michael@0: #endif /* U_HAVE_DEBUG_LOCATION_NEW */
michael@0: 
michael@0: 
michael@0: #endif
michael@0: 
michael@0: UObject::~UObject() {}
michael@0: 
michael@0: UClassID UObject::getDynamicClassID() const { return NULL; }
michael@0: 
michael@0: U_NAMESPACE_END
michael@0: 
michael@0: U_NAMESPACE_USE
michael@0: 
michael@0: U_CAPI void U_EXPORT2
michael@0: uprv_deleteUObject(void *obj) {
michael@0:     delete static_cast<UObject *>(obj);
michael@0: }