Coverage Report

Created: 2025-01-28 06:38

/src/icu/source/common/uobject.cpp
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// © 2016 and later: Unicode, Inc. and others.
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// License & terms of use: http://www.unicode.org/copyright.html
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/*
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******************************************************************************
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*
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*   Copyright (C) 2002-2012, International Business Machines
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*   Corporation and others.  All Rights Reserved.
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*
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******************************************************************************
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*   file name:  uobject.h
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*   encoding:   UTF-8
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*   tab size:   8 (not used)
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*   indentation:4
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*
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*   created on: 2002jun26
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*   created by: Markus W. Scherer
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*/
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#include "unicode/uobject.h"
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#include "cmemory.h"
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U_NAMESPACE_BEGIN
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#if U_OVERRIDE_CXX_ALLOCATION
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/*
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 * Default implementation of UMemory::new/delete
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 * using uprv_malloc() and uprv_free().
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 *
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 * For testing, this is used together with a list of imported symbols to verify
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 * that ICU is not using the global ::new and ::delete operators.
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 *
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 * These operators can be implemented like this or any other appropriate way
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 * when customizing ICU for certain environments.
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 * Whenever ICU is customized in binary incompatible ways please be sure
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 * to use library name suffixes to distinguish such libraries from
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 * the standard build.
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 *
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 * Instead of just modifying these C++ new/delete operators, it is usually best
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 * to modify the uprv_malloc()/uprv_free()/uprv_realloc() functions in cmemory.c.
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 *
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 * Memory test on Windows/MSVC 6:
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 * The global operators new and delete look as follows:
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 *   04F 00000000 UNDEF  notype ()    External     | ??2@YAPAXI@Z (void * __cdecl operator new(unsigned int))
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 *   03F 00000000 UNDEF  notype ()    External     | ??3@YAXPAX@Z (void __cdecl operator delete(void *))
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 *
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 * These lines are from output generated by the MSVC 6 tool dumpbin with
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 * dumpbin /symbols *.obj
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 *
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 * ??2@YAPAXI@Z and ??3@YAXPAX@Z are the linker symbols in the .obj
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 * files and are imported from msvcrtd.dll (in a debug build).
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 *
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 * Make sure that with the UMemory operators new and delete defined these two symbols
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 * do not appear in the dumpbin /symbols output for the ICU libraries!
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 *
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 * If such a symbol appears in the output then look in the preceding lines in the output
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 * for which file and function calls the global new or delete operator,
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 * and replace with uprv_malloc/uprv_free.
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 */
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void * U_EXPORT2 UMemory::operator new(size_t size) U_NOEXCEPT {
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    return uprv_malloc(size);
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}
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void U_EXPORT2 UMemory::operator delete(void *p) U_NOEXCEPT {
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    if(p!=NULL) {
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        uprv_free(p);
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    }
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}
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void * U_EXPORT2 UMemory::operator new[](size_t size) U_NOEXCEPT {
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    return uprv_malloc(size);
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}
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void U_EXPORT2 UMemory::operator delete[](void *p) U_NOEXCEPT {
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    if(p!=NULL) {
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        uprv_free(p);
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    }
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}
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#if U_HAVE_DEBUG_LOCATION_NEW
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void * U_EXPORT2 UMemory::operator new(size_t size, const char* /*file*/, int /*line*/) U_NOEXCEPT {
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    return UMemory::operator new(size);
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}
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void U_EXPORT2 UMemory::operator delete(void* p, const char* /*file*/, int /*line*/) U_NOEXCEPT {
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    UMemory::operator delete(p);
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}
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#endif /* U_HAVE_DEBUG_LOCATION_NEW */
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#endif
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UObject::~UObject() {}
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UClassID UObject::getDynamicClassID() const { return NULL; }
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U_NAMESPACE_END
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U_NAMESPACE_USE
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U_CAPI void U_EXPORT2
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uprv_deleteUObject(void *obj) {
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    delete static_cast<UObject *>(obj);
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}