RetroZilla/xpcom/build/nsXPCOM.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** 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 mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Benjamin Smedberg <benjamin@smedbergs.us>
*
* Alternatively, the contents of this file may be used under the terms of
* either of 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 nsXPCOM_h__
#define nsXPCOM_h__
// Map frozen functions to private symbol names if not using strict API.
#ifdef MOZILLA_INTERNAL_API
# define NS_InitXPCOM2 NS_InitXPCOM2_P
# define NS_InitXPCOM3 NS_InitXPCOM3_P
# define NS_ShutdownXPCOM NS_ShutdownXPCOM_P
# define NS_GetServiceManager NS_GetServiceManager_P
# define NS_GetComponentManager NS_GetComponentManager_P
# define NS_GetComponentRegistrar NS_GetComponentRegistrar_P
# define NS_GetMemoryManager NS_GetMemoryManager_P
# define NS_NewLocalFile NS_NewLocalFile_P
# define NS_NewNativeLocalFile NS_NewNativeLocalFile_P
# define NS_GetDebug NS_GetDebug_P
# define NS_GetTraceRefcnt NS_GetTraceRefcnt_P
# define NS_Alloc NS_Alloc_P
# define NS_Realloc NS_Realloc_P
# define NS_Free NS_Free_P
#endif
#include "nscore.h"
#include "nsXPCOMCID.h"
class nsAString;
class nsACString;
class nsIModule;
class nsIComponentManager;
class nsIComponentRegistrar;
class nsIServiceManager;
class nsIFile;
class nsILocalFile;
class nsIDirectoryServiceProvider;
class nsIMemory;
class nsIDebug;
class nsITraceRefcnt;
/**
* Every XPCOM component implements this function signature, which is the
* only entrypoint XPCOM uses to the function.
*
* @status FROZEN
*/
typedef nsresult (PR_CALLBACK *nsGetModuleProc)(nsIComponentManager *aCompMgr,
nsIFile* location,
nsIModule** return_cobj);
/**
* Initialises XPCOM. You must call one of the NS_InitXPCOM methods
* before proceeding to use xpcom. The one exception is that you may
* call NS_NewLocalFile to create a nsIFile.
*
* @status FROZEN
*
* @note Use <CODE>NS_NewLocalFile</CODE> or <CODE>NS_NewNativeLocalFile</CODE>
* to create the file object you supply as the bin directory path in this
* call. The function may be safely called before the rest of XPCOM or
* embedding has been initialised.
*
* @param result The service manager. You may pass null.
*
* @param binDirectory The directory containing the component
* registry and runtime libraries;
* or use <CODE>nsnull</CODE> to use the working
* directory.
*
* @param appFileLocationProvider The object to be used by Gecko that specifies
* to Gecko where to find profiles, the component
* registry preferences and so on; or use
* <CODE>nsnull</CODE> for the default behaviour.
*
* @see NS_NewLocalFile
* @see nsILocalFile
* @see nsIDirectoryServiceProvider
*
* @return NS_OK for success;
* NS_ERROR_NOT_INITIALIZED if static globals were not initialized,
* which can happen if XPCOM is reloaded, but did not completly
* shutdown. Other error codes indicate a failure during
* initialisation.
*/
extern "C" NS_COM nsresult
NS_InitXPCOM2(nsIServiceManager* *result,
nsIFile* binDirectory,
nsIDirectoryServiceProvider* appFileLocationProvider);
/**
* Some clients of XPCOM have statically linked components (not dynamically
* loaded component DLLs), which can be passed to NS_InitXPCOM3 using this
* structure.
*
* @status FROZEN
*/
struct nsStaticModuleInfo {
const char *name;
nsGetModuleProc getModule;
};
/**
* Initialises XPCOM with static components. You must call one of the
* NS_InitXPCOM methods before proceeding to use xpcom. The one
* exception is that you may call NS_NewLocalFile to create a nsIFile.
*
* @status FROZEN
*
* @note Use <CODE>NS_NewLocalFile</CODE> or <CODE>NS_NewNativeLocalFile</CODE>
* to create the file object you supply as the bin directory path in this
* call. The function may be safely called before the rest of XPCOM or
* embedding has been initialised.
*
* @param result The service manager. You may pass null.
*
* @param binDirectory The directory containing the component
* registry and runtime libraries;
* or use <CODE>nsnull</CODE> to use the working
* directory.
*
* @param appFileLocationProvider The object to be used by Gecko that specifies
* to Gecko where to find profiles, the component
* registry preferences and so on; or use
* <CODE>nsnull</CODE> for the default behaviour.
*
* @param staticComponents An array of static components. Passing null causes
* default (builtin) components to be registered, if
* present.
* @param componentCount Number of elements in staticComponents
*
* @see NS_NewLocalFile
* @see nsILocalFile
* @see nsIDirectoryServiceProvider
* @see XRE_GetStaticComponents
*
* @return NS_OK for success;
* NS_ERROR_NOT_INITIALIZED if static globals were not initialized,
* which can happen if XPCOM is reloaded, but did not completly
* shutdown. Other error codes indicate a failure during
* initialisation.
*/
extern "C" NS_COM nsresult
NS_InitXPCOM3(nsIServiceManager* *result,
nsIFile* binDirectory,
nsIDirectoryServiceProvider* appFileLocationProvider,
nsStaticModuleInfo const *staticComponents,
PRUint32 componentCount);
/**
* Shutdown XPCOM. You must call this method after you are finished
* using xpcom.
*
* @status FROZEN
*
* @param servMgr The service manager which was returned by NS_InitXPCOM.
* This will release servMgr. You may pass null.
*
* @return NS_OK for success;
* other error codes indicate a failure during initialisation.
*
*/
extern "C" NS_COM nsresult
NS_ShutdownXPCOM(nsIServiceManager* servMgr);
/**
* Public Method to access to the service manager.
*
* @status FROZEN
* @param result Interface pointer to the service manager
*
* @return NS_OK for success;
* other error codes indicate a failure during initialisation.
*
*/
extern "C" NS_COM nsresult
NS_GetServiceManager(nsIServiceManager* *result);
/**
* Public Method to access to the component manager.
*
* @status FROZEN
* @param result Interface pointer to the service
*
* @return NS_OK for success;
* other error codes indicate a failure during initialisation.
*
*/
extern "C" NS_COM nsresult
NS_GetComponentManager(nsIComponentManager* *result);
/**
* Public Method to access to the component registration manager.
*
* @status FROZEN
* @param result Interface pointer to the service
*
* @return NS_OK for success;
* other error codes indicate a failure during initialisation.
*
*/
extern "C" NS_COM nsresult
NS_GetComponentRegistrar(nsIComponentRegistrar* *result);
/**
* Public Method to access to the memory manager. See nsIMemory
*
* @status FROZEN
* @param result Interface pointer to the memory manager
*
* @return NS_OK for success;
* other error codes indicate a failure during initialisation.
*
*/
extern "C" NS_COM nsresult
NS_GetMemoryManager(nsIMemory* *result);
/**
* Public Method to create an instance of a nsILocalFile. This function
* may be called prior to NS_InitXPCOM.
*
* @status FROZEN
*
* @param path
* A string which specifies a full file path to a
* location. Relative paths will be treated as an
* error (NS_ERROR_FILE_UNRECOGNIZED_PATH).
* |NS_NewNativeLocalFile|'s path must be in the
* filesystem charset.
* @param followLinks
* This attribute will determine if the nsLocalFile will auto
* resolve symbolic links. By default, this value will be false
* on all non unix systems. On unix, this attribute is effectively
* a noop.
* @param result Interface pointer to a new instance of an nsILocalFile
*
* @return NS_OK for success;
* other error codes indicate a failure.
*/
extern "C" NS_COM nsresult
NS_NewLocalFile(const nsAString &path,
PRBool followLinks,
nsILocalFile* *result);
extern "C" NS_COM nsresult
NS_NewNativeLocalFile(const nsACString &path,
PRBool followLinks,
nsILocalFile* *result);
/**
* Allocates a block of memory of a particular size. If the memory cannot
* be allocated (because of an out-of-memory condition), null is returned.
*
* @status FROZEN
*
* @param size The size of the block to allocate
* @result The block of memory
* @note This function is thread-safe.
*/
extern "C" NS_COM void*
NS_Alloc(PRSize size);
/**
* Reallocates a block of memory to a new size.
*
* @status FROZEN
*
* @param ptr The block of memory to reallocate. This block must originally
have been allocated by NS_Alloc or NS_Realloc
* @param size The new size. If 0, frees the block like NS_Free
* @result The reallocated block of memory
* @note This function is thread-safe.
*
* If ptr is null, this function behaves like NS_Alloc.
* If s is the size of the block to which ptr points, the first min(s, size)
* bytes of ptr's block are copied to the new block. If the allocation
* succeeds, ptr is freed and a pointer to the new block is returned. If the
* allocation fails, ptr is not freed and null is returned. The returned
* value may be the same as ptr.
*/
extern "C" NS_COM void*
NS_Realloc(void* ptr, PRSize size);
/**
* Frees a block of memory. Null is a permissible value, in which case no
* action is taken.
*
* @status FROZEN
*
* @param ptr The block of memory to free. This block must originally have
* been allocated by NS_Alloc or NS_Realloc
* @note This function is thread-safe.
*/
extern "C" NS_COM void
NS_Free(void* ptr);
/**
* Categories (in the category manager service) used by XPCOM:
*/
/**
* A category which is read after component registration but before
* the "xpcom-startup" notifications. Each category entry is treated
* as the contract ID of a service which implements
* nsIDirectoryServiceProvider. Each directory service provider is
* installed in the global directory service.
*
* @status FROZEN
*/
#define XPCOM_DIRECTORY_PROVIDER_CATEGORY "xpcom-directory-providers"
/**
* A category which is read after component registration but before
* NS_InitXPCOM returns. Each category entry is treated as the contractID of
* a service: each service is instantiated, and if it implements nsIObserver
* the nsIObserver.observe method is called with the "xpcom-startup" topic.
*
* @status FROZEN
*/
#define NS_XPCOM_STARTUP_CATEGORY "xpcom-startup"
/**
* Observer topics (in the observer service) used by XPCOM:
*/
/**
* At XPCOM startup after component registration is complete, the
* following topic is notified. In order to receive this notification,
* component must register their contract ID in the category manager,
*
* @see NS_XPCOM_STARTUP_CATEGORY
* @status FROZEN
*/
#define NS_XPCOM_STARTUP_OBSERVER_ID "xpcom-startup"
/**
* At XPCOM shutdown, this topic is notified. All components must
* release any interface references to objects in other modules when
* this topic is notified.
*
* @status FROZEN
*/
#define NS_XPCOM_SHUTDOWN_OBSERVER_ID "xpcom-shutdown"
/**
* This topic is notified when an entry was added to a category in the
* category manager. The subject of the notification will be the name of
* the added entry as an nsISupportsCString, and the data will be the
* name of the category. The notification will occur on the main thread.
*
* @status FROZEN
*/
#define NS_XPCOM_CATEGORY_ENTRY_ADDED_OBSERVER_ID \
"xpcom-category-entry-added"
/**
* This topic is notified when an entry was removed from a category in the
* category manager. The subject of the notification will be the name of
* the removed entry as an nsISupportsCString, and the data will be the
* name of the category. The notification will occur on the main thread.
*
* @status FROZEN
*/
#define NS_XPCOM_CATEGORY_ENTRY_REMOVED_OBSERVER_ID \
"xpcom-category-entry-removed"
/**
* This topic is notified when an a category was cleared in the category
* manager. The subject of the notification will be the category manager,
* and the data will be the name of the cleared category.
* The notification will occur on the main thread.
*
* @status FROZEN
*/
#define NS_XPCOM_CATEGORY_CLEARED_OBSERVER_ID "xpcom-category-cleared"
extern "C" NS_COM nsresult
NS_GetDebug(nsIDebug* *result);
extern "C" NS_COM nsresult
NS_GetTraceRefcnt(nsITraceRefcnt* *result);
#endif