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/*
******************************************************************************
*
* Copyright (C) 2002-2005, International Business Machines
* Corporation and others. All Rights Reserved.
*
******************************************************************************
* file name: uobject.h
* encoding: US-ASCII
* tab size: 8 (not used)
* indentation:4
*
* created on: 2002jun26
* created by: Markus W. Scherer
*/
#include "unicode/uobject.h"
#include "cmemory.h"
U_NAMESPACE_BEGIN
#if U_OVERRIDE_CXX_ALLOCATION
/*
* Default implementation of UMemory::new/delete
* using uprv_malloc() and uprv_free().
*
* For testing, this is used together with a list of imported symbols to verify
* that ICU is not using the global ::new and ::delete operators.
*
* These operators can be implemented like this or any other appropriate way
* when customizing ICU for certain environments.
* Whenever ICU is customized in binary incompatible ways please be sure
* to use library name suffixes to distinguish such libraries from
* the standard build.
*
* Instead of just modifying these C++ new/delete operators, it is usually best
* to modify the uprv_malloc()/uprv_free()/uprv_realloc() functions in cmemory.c.
*
* Memory test on Windows/MSVC 6:
* The global operators new and delete look as follows:
* 04F 00000000 UNDEF notype () External | ??2@YAPAXI@Z (void * __cdecl operator new(unsigned int))
* 03F 00000000 UNDEF notype () External | ??3@YAXPAX@Z (void __cdecl operator delete(void *))
*
* These lines are from output generated by the MSVC 6 tool dumpbin with
* dumpbin /symbols *.obj
*
* ??2@YAPAXI@Z and ??3@YAXPAX@Z are the linker symbols in the .obj
* files and are imported from msvcrtd.dll (in a debug build).
*
* Make sure that with the UMemory operators new and delete defined these two symbols
* do not appear in the dumpbin /symbols output for the ICU libraries!
*
* If such a symbol appears in the output then look in the preceding lines in the output
* for which file and function calls the global new or delete operator,
* and replace with uprv_malloc/uprv_free.
*/
void * U_EXPORT2 UMemory::operator new(size_t size) {
return uprv_malloc(size);
}
void U_EXPORT2 UMemory::operator delete(void *p) {
if(p!=NULL) {
uprv_free(p);
}
}
void * U_EXPORT2 UMemory::operator new[](size_t size) {
return uprv_malloc(size);
}
void U_EXPORT2 UMemory::operator delete[](void *p) {
if(p!=NULL) {
uprv_free(p);
}
}
#if U_HAVE_DEBUG_LOCATION_NEW
void * U_EXPORT2 UMemory::operator new(size_t size, const char* /*file*/, int /*line*/) {
return UMemory::operator new(size);
}
void U_EXPORT2 UMemory::operator delete(void* p, const char* /*file*/, int /*line*/) {
UMemory::operator delete(p);
}
#endif /* U_HAVE_DEBUG_LOCATION_NEW */
#endif
UObject::~UObject() {}
// Future implementation for RTTI that support subtyping. [alan]
//
// UClassID UObject::getStaticClassID() {
// return (UClassID) NULL;
// }
//
// UBool UObject::instanceOf(UClassID type) const {
// UClassID c = getDynamicClassID();
// for (;;) {
// if (c == type) {
// return TRUE;
// } else if (c == (UClassID) NULL) {
// return FALSE;
// }
// c = * (UClassID*) c;
// }
// }
U_NAMESPACE_END
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