michael@0: /*
michael@0: ******************************************************************************
michael@0: * Copyright (C) 2001-2013, International Business Machines
michael@0: *                Corporation and others. All Rights Reserved.
michael@0: ******************************************************************************
michael@0: *   file name:  ucln_cmn.c
michael@0: *   encoding:   US-ASCII
michael@0: *   tab size:   8 (not used)
michael@0: *   indentation:4
michael@0: *
michael@0: *   created on: 2001July05
michael@0: *   created by: George Rhoten
michael@0: */
michael@0: 
michael@0: #include "unicode/utypes.h"
michael@0: #include "unicode/uclean.h"
michael@0: #include "utracimp.h"
michael@0: #include "ucln_cmn.h"
michael@0: #include "cmutex.h"
michael@0: #include "ucln.h"
michael@0: #include "cmemory.h"
michael@0: #include "uassert.h"
michael@0: 
michael@0: /**  Auto-client for UCLN_COMMON **/
michael@0: #define UCLN_TYPE_IS_COMMON
michael@0: #include "ucln_imp.h"
michael@0: 
michael@0: static cleanupFunc *gCommonCleanupFunctions[UCLN_COMMON_COUNT];
michael@0: static cleanupFunc *gLibCleanupFunctions[UCLN_COMMON];
michael@0: 
michael@0: 
michael@0: /************************************************
michael@0:  The cleanup order is important in this function.
michael@0:  Please be sure that you have read ucln.h
michael@0:  ************************************************/
michael@0: U_CAPI void U_EXPORT2
michael@0: u_cleanup(void)
michael@0: {
michael@0:     UTRACE_ENTRY_OC(UTRACE_U_CLEANUP);
michael@0:     umtx_lock(NULL);     /* Force a memory barrier, so that we are sure to see   */
michael@0:     umtx_unlock(NULL);   /*   all state left around by any other threads.        */
michael@0: 
michael@0:     ucln_lib_cleanup();
michael@0: 
michael@0:     cmemory_cleanup();       /* undo any heap functions set by u_setMemoryFunctions(). */
michael@0:     UTRACE_EXIT();           /* Must be before utrace_cleanup(), which turns off tracing. */
michael@0: /*#if U_ENABLE_TRACING*/
michael@0:     utrace_cleanup();
michael@0: /*#endif*/
michael@0: }
michael@0: 
michael@0: U_CAPI void U_EXPORT2 ucln_cleanupOne(ECleanupLibraryType libType) 
michael@0: {
michael@0:     if (gLibCleanupFunctions[libType])
michael@0:     {
michael@0:         gLibCleanupFunctions[libType]();
michael@0:         gLibCleanupFunctions[libType] = NULL;
michael@0:     }
michael@0: }
michael@0: 
michael@0: U_CFUNC void
michael@0: ucln_common_registerCleanup(ECleanupCommonType type,
michael@0:                             cleanupFunc *func)
michael@0: {
michael@0:     U_ASSERT(UCLN_COMMON_START < type && type < UCLN_COMMON_COUNT);
michael@0:     if (UCLN_COMMON_START < type && type < UCLN_COMMON_COUNT)
michael@0:     {
michael@0:         gCommonCleanupFunctions[type] = func;
michael@0:     }
michael@0: #if !UCLN_NO_AUTO_CLEANUP && (defined(UCLN_AUTO_ATEXIT) || defined(UCLN_AUTO_LOCAL))
michael@0:     ucln_registerAutomaticCleanup();
michael@0: #endif
michael@0: }
michael@0: 
michael@0: U_CAPI void U_EXPORT2
michael@0: ucln_registerCleanup(ECleanupLibraryType type,
michael@0:                      cleanupFunc *func)
michael@0: {
michael@0:     U_ASSERT(UCLN_START < type && type < UCLN_COMMON);
michael@0:     if (UCLN_START < type && type < UCLN_COMMON)
michael@0:     {
michael@0:         gLibCleanupFunctions[type] = func;
michael@0:     }
michael@0: }
michael@0: 
michael@0: U_CFUNC UBool ucln_lib_cleanup(void) {
michael@0:     ECleanupLibraryType libType = UCLN_START;
michael@0:     ECleanupCommonType commonFunc = UCLN_COMMON_START;
michael@0: 
michael@0:     for (libType++; libType<UCLN_COMMON; libType++) {
michael@0:         ucln_cleanupOne(libType);
michael@0:     }
michael@0: 
michael@0:     for (commonFunc++; commonFunc<UCLN_COMMON_COUNT; commonFunc++) {
michael@0:         if (gCommonCleanupFunctions[commonFunc])
michael@0:         {
michael@0:             gCommonCleanupFunctions[commonFunc]();
michael@0:             gCommonCleanupFunctions[commonFunc] = NULL;
michael@0:         }
michael@0:     }
michael@0: #if !UCLN_NO_AUTO_CLEANUP && (defined(UCLN_AUTO_ATEXIT) || defined(UCLN_AUTO_LOCAL))
michael@0:     ucln_unRegisterAutomaticCleanup();
michael@0: #endif
michael@0:     return TRUE;
michael@0: }