sm-zombiereloaded-3/env/include/handles.inc
2015-03-21 15:43:24 +01:00

105 lines
4.0 KiB
SourcePawn

/**
* vim: set ts=4 :
* =============================================================================
* SourceMod (C)2004-2008 AlliedModders LLC. All rights reserved.
* =============================================================================
*
* This file is part of the SourceMod/SourcePawn SDK.
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, version 3.0, as published by the
* Free Software Foundation.
*
* This program 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 for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, AlliedModders LLC gives you permission to link the
* code of this program (as well as its derivative works) to "Half-Life 2," the
* "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
* by the Valve Corporation. You must obey the GNU General Public License in
* all respects for all other code used. Additionally, AlliedModders LLC grants
* this exception to all derivative works. AlliedModders LLC defines further
* exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
* or <http://www.sourcemod.net/license.php>.
*
* Version: $Id$
*/
#if defined _handles_included
#endinput
#endif
#define _handles_included
/**
* Preset Handle values.
*/
enum Handle: // Tag disables introducing "Handle" as a symbol.
{
INVALID_HANDLE = 0,
};
/**
* Closes a Handle. If the handle has multiple copies open,
* it is not destroyed unless all copies are closed.
*
* @note Closing a Handle has a different meaning for each Handle type. Make
* sure you read the documentation on whatever provided the Handle.
*
* @param hndl Handle to close.
* @error Invalid handles will cause a run time error.
*/
native CloseHandle(Handle:hndl);
/**
* Clones a Handle. When passing handles in between plugins, caching handles
* can result in accidental invalidation when one plugin releases the Handle, or is its owner
* is unloaded from memory. To prevent this, the Handle may be "cloned" with a new owner.
*
* @note Usually, you will be cloning Handles for other plugins. This means that if you clone
* the Handle without specifying the new owner, it will assume the identity of your original calling
* plugin, which is not very useful. You should either specify that the receiving plugin should
* clone the handle on its own, or you should explicitly clone the Handle using the receiving plugin's
* identity Handle.
*
* @param hndl Handle to clone/duplicate.
* @param plugin Optional Handle to another plugin to mark as the new owner.
* If no owner is passed, the owner becomes the calling plugin.
* @return Handle on success, INVALID_HANDLE if not cloneable.
* @error Invalid handles will cause a run time error.
*/
native Handle:CloneHandle(Handle:hndl, Handle:plugin=INVALID_HANDLE);
/**
* Helper for object-oriented syntax.
*/
methodmap Handle __nullable__
{
public Close() = CloseHandle;
public ~Handle() = CloseHandle;
}
/**
* Do not use this function. Returns if a Handle and its contents
* are readable, whereas INVALID_HANDLE only checks for the absence
* of a Handle.
*
* This function is intended only for tests where the validity of a
* Handle can absolutely not be known.
*
* Do not use this to check the return values of functions, or to
* check if timers should be closed (except in very rare cases).
* This function is for very specific usage and using it for general
* purpose routines can and will hide very subtle bugs.
*
* @param hndl Handle to test for validity.
* @return True if handle is valid, false otherwise.
*/
#pragma deprecated Do not use this function.
native bool:IsValidHandle(Handle:hndl);