/* ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is XPCOM. * * The Initial Developer of the Original Code is Netscape Communications Corp. * Portions created by the Initial Developer are Copyright (C) 2001 * the Initial Developer. All Rights Reserved. * * Contributor(s): * * Alternatively, the contents of this file may be used under the terms of * either the GNU General Public License Version 2 or later (the "GPL"), or * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */ #ifndef nsISupportsObsolete_h__ #define nsISupportsObsolete_h__ #include "prcmon.h" /////////////////////////////////////////////////////////////////////////////// #define NS_INIT_REFCNT() NS_INIT_ISUPPORTS() #define NS_DECL_ISUPPORTS_EXPORTED \ public: \ NS_EXPORT NS_IMETHOD QueryInterface(REFNSIID aIID, \ void** aInstancePtr); \ NS_EXPORT NS_IMETHOD_(nsrefcnt) AddRef(void); \ NS_EXPORT NS_IMETHOD_(nsrefcnt) Release(void); \ protected: \ nsrefcnt mRefCnt; \ NS_DECL_OWNINGTHREAD \ public: #ifdef NS_DEBUG /* * Adding this debug-only function as per bug #26803. If you are debugging * and this function returns wrong refcounts, fix the objects |AddRef()| and * |Release()| to do the right thing. * * Of course, this function is only available for debug builds. */ inline nsrefcnt NS_DebugGetRefCount( nsISupports* obj ) // Warning: don't apply this to an object whose refcount is // |0| or not yet initialized ... it may be destroyed. { nsrefcnt ref_count = 0; if ( obj ) { // |AddRef()| and |Release()| are supposed to return // the new refcount of the object obj->AddRef(); ref_count = obj->Release(); // Can't use |NS_[ADDREF|RELEASE]| since (a) they _don't_ return // the refcount, and (b) we don't want to log these guaranteed // balanced calls. NS_ASSERTION(ref_count, "Oops! Calling |NS_DebugGetRefCount()| probably just " "destroyed this object."); } return ref_count; } #endif // NS_DEBUG /** * Macro to free an array of pointers to nsISupports (or classes * derived from it). A convenience wrapper around * NS_FREE_XPCOM_POINTER_ARRAY. * * Note that if you know that none of your nsISupports pointers are * going to be 0, you can gain a bit of speed by calling * NS_FREE_XPCOM_POINTER_ARRAY directly and using NS_RELEASE as your * free function. * * @param size Number of elements in the array. If not a constant, this * should be a PRInt32. Note that this means this macro * will not work if size >= 2^31. * @param array The array to be freed. */ #define NS_FREE_XPCOM_ISUPPORTS_POINTER_ARRAY(size, array) \ NS_FREE_XPCOM_POINTER_ARRAY((size), (array), NS_IF_RELEASE) /////////////////////////////////////////////////////////////////////////////// /* use these functions to associate get/set methods with a C++ member variable */ #define NS_METHOD_GETTER(_method, _type, _member) \ _method(_type* aResult) \ {\ if (!aResult) return NS_ERROR_NULL_POINTER; \ *aResult = _member; \ return NS_OK; \ } #define NS_METHOD_SETTER(_method, _type, _member) \ _method(_type aResult) \ { \ _member = aResult; \ return NS_OK; \ } /* * special for strings to get/set char* strings * using PL_strdup and PR_FREEIF */ #define NS_METHOD_GETTER_STR(_method,_member) \ _method(char* *aString)\ {\ if (!aString) return NS_ERROR_NULL_POINTER; \ *aString = PL_strdup(_member); \ return NS_OK; \ } #define NS_METHOD_SETTER_STR(_method, _member) \ _method(const char *aString)\ {\ PR_FREEIF(_member);\ if (aString) _member = PL_strdup(aString); \ else _member = nsnull;\ return NS_OK; \ } /* Getter/Setter macros. Usage: NS_IMPL_[CLASS_]GETTER[_](method, [type,] member); NS_IMPL_[CLASS_]SETTER[_](method, [type,] member); NS_IMPL_[CLASS_]GETSET[_]([class, ]postfix, [type,] member); where: CLASS_ - implementation is inside a class definition (otherwise the class name is needed) Do NOT use in publicly exported header files, because the implementation may be included many times over. Instead, use the non-CLASS_ version. _ - For more complex (STR, IFACE) data types (otherwise the simple data type is needed) method - name of the method, such as GetWidth or SetColor type - simple data type if required member - class member variable such as m_width or mColor class - the class name, such as Window or MyObject postfix - Method part after Get/Set such as "Width" for "GetWidth" Example: class Window { public: NS_IMPL_CLASS_GETSET(Width, int, m_width); NS_IMPL_CLASS_GETTER_STR(GetColor, m_color); NS_IMETHOD SetColor(char *color); private: int m_width; // read/write char *m_color; // readonly }; // defined outside of class NS_IMPL_SETTER_STR(Window::GetColor, m_color); Questions/Comments to alecf@netscape.com */ /* * Getter/Setter implementation within a class definition */ /* simple data types */ #define NS_IMPL_CLASS_GETTER(_method, _type, _member) \ NS_IMETHOD NS_METHOD_GETTER(_method, _type, _member) #define NS_IMPL_CLASS_SETTER(_method, _type, _member) \ NS_IMETHOD NS_METHOD_SETTER(_method, _type, _member) #define NS_IMPL_CLASS_GETSET(_postfix, _type, _member) \ NS_IMPL_CLASS_GETTER(Get##_postfix, _type, _member) \ NS_IMPL_CLASS_SETTER(Set##_postfix, _type, _member) /* strings */ #define NS_IMPL_CLASS_GETTER_STR(_method, _member) \ NS_IMETHOD NS_METHOD_GETTER_STR(_method, _member) #define NS_IMPL_CLASS_SETTER_STR(_method, _member) \ NS_IMETHOD NS_METHOD_SETTER_STR(_method, _member) #define NS_IMPL_CLASS_GETSET_STR(_postfix, _member) \ NS_IMPL_CLASS_GETTER_STR(Get##_postfix, _member) \ NS_IMPL_CLASS_SETTER_STR(Set##_postfix, _member) /* Getter/Setter implementation outside of a class definition */ /* simple data types */ #define NS_IMPL_GETTER(_method, _type, _member) \ NS_IMETHODIMP NS_METHOD_GETTER(_method, _type, _member) #define NS_IMPL_SETTER(_method, _type, _member) \ NS_IMETHODIMP NS_METHOD_SETTER(_method, _type, _member) #define NS_IMPL_GETSET(_class, _postfix, _type, _member) \ NS_IMPL_GETTER(_class::Get##_postfix, _type, _member) \ NS_IMPL_SETTER(_class::Set##_postfix, _type, _member) /* strings */ #define NS_IMPL_GETTER_STR(_method, _member) \ NS_IMETHODIMP NS_METHOD_GETTER_STR(_method, _member) #define NS_IMPL_SETTER_STR(_method, _member) \ NS_IMETHODIMP NS_METHOD_SETTER_STR(_method, _member) #define NS_IMPL_GETSET_STR(_class, _postfix, _member) \ NS_IMPL_GETTER_STR(_class::Get##_postfix, _member) \ NS_IMPL_SETTER_STR(_class::Set##_postfix, _member) /** * IID for the nsIsThreadsafe interface * {88210890-47a6-11d2-bec3-00805f8a66dc} * * This interface is *only* used for debugging purposes to determine if * a given component is threadsafe. */ #define NS_ISTHREADSAFE_IID \ { 0x88210890, 0x47a6, 0x11d2, \ {0xbe, 0xc3, 0x00, 0x80, 0x5f, 0x8a, 0x66, 0xdc} } #define NS_LOCK_INSTANCE() \ PR_CEnterMonitor((void*)this) #define NS_UNLOCK_INSTANCE() \ PR_CExitMonitor((void*)this) /** * This implements query interface with two assumptions: First, the * class in question implements nsISupports and its own interface and * nothing else. Second, the implementation of the class's primary * inheritance chain leads to its own interface. * * @param _class The name of the class implementing the method * @param _classiiddef The name of the #define symbol that defines the IID * for the class (e.g. NS_ISUPPORTS_IID) */ #if defined(NS_DEBUG) #define NS_VERIFY_THREADSAFE_INTERFACE(_iface) \ if (NULL != (_iface)) { \ nsISupports* tmp; \ static NS_DEFINE_IID(kIsThreadsafeIID, NS_ISTHREADSAFE_IID); \ NS_PRECONDITION((NS_OK == _iface->QueryInterface(kIsThreadsafeIID, \ (void**)&tmp)), \ "Interface is not threadsafe"); \ } #else #define NS_VERIFY_THREADSAFE_INTERFACE(_iface) #endif //////////////////////////////////////////////////////////////////////////////// #endif