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* *
* Copyright (C) 2001-2003, International Business Machines *
* Corporation and others. All Rights Reserved. *
* *
* file name: ucln_cmn.h
* encoding: US-ASCII
* tab size: 8 (not used)
* indentation:4
* created on: 2001July05
* created by: George Rhoten
#ifndef __UCLN_H__
#define __UCLN_H__
#include "unicode/utypes.h"
/** These are the functions used to register a library's memory cleanup
* functions. Each library should define a single library register function
* to call this API. In the i18n library, it is ucln_i18n_registerCleanup().
* None of the cleanup functions should use a mutex to clean up an API's
* allocated memory because a cleanup function is not meant to be thread safe,
* and plenty of data cannot be reference counted in order to make sure that
* no one else needs the allocated data.
* In order to make a cleanup function get called when u_cleanup is called,
* You should add your function to the library specific cleanup function.
* If the cleanup function is not in the common library, the code that
* allocates the memory should call the library specific cleanup function.
* For instance, in the i18n library, any memory allocated statically must
* call ucln_i18n_registerCleanup() from the ucln_in.h header. These library
* cleanup functions are needed in order to prevent a circular dependency
* between the common library and any other library.
* The order of the cleanup is very important. In general, an API that
* depends on a second API should be cleaned up before the second API.
* For instance, the default converter in ustring depends upon the converter
* API. So the default converter should be closed before the converter API
* has its cache flushed. This will prevent any memory leaks due to
* reference counting.
* Please see common/ucln_cmn.{h,c} and i18n/ucln_in.{h,c} for examples.
typedef enum ECleanupLibraryType {
UCLN_CUSTOM, /* Custom is for anyone else. */
UCLN_COMMON /* This must be the last one to cleanup. */
} ECleanupLibraryType;
typedef UBool cleanupFunc(void);
U_CAPI void U_EXPORT2 ucln_registerCleanup(ECleanupLibraryType type,
cleanupFunc *func);