icuSources/common/ucln_cmn.c

   1 /*
   2 ******************************************************************************
   3 * Copyright (C) 2001-2011, International Business Machines
   4 *                Corporation and others. All Rights Reserved.
   5 ******************************************************************************
   6 *   file name:  ucln_cmn.c
   7 *   encoding:   US-ASCII
   8 *   tab size:   8 (not used)
   9 *   indentation:4
  10 *
  11 *   created on: 2001July05
  12 *   created by: George Rhoten
  13 */
  14
  15 #include "unicode/utypes.h"
  16 #include "unicode/uclean.h"
  17 #include "utracimp.h"
  18 #include "ucln_cmn.h"
  19 #include "umutex.h"
  20 #include "ucln.h"
  21 #include "cmemory.h"
  22 #include "uassert.h"
  23
  24 /**  Auto-client for UCLN_COMMON **/
  25 #define UCLN_TYPE_IS_COMMON
  26 #include "ucln_imp.h"
  27
  28 U_CDECL_BEGIN
  29
  30 UBool gICUInitialized = FALSE;
  31 UMTX  gICUInitMutex   = NULL;
  32
  33 U_CDECL_END
  34
  35 static cleanupFunc *gCommonCleanupFunctions[UCLN_COMMON_COUNT];
  36 static cleanupFunc *gLibCleanupFunctions[UCLN_COMMON];
  37
  38 /************************************************
  39  The cleanup order is important in this function.
  40  Please be sure that you have read ucln.h
  41  ************************************************/
  42 U_CAPI void U_EXPORT2
  43 u_cleanup(void)
  44 {
  45     UTRACE_ENTRY_OC(UTRACE_U_CLEANUP);
  46     umtx_lock(NULL);     /* Force a memory barrier, so that we are sure to see   */
  47     umtx_unlock(NULL);   /*   all state left around by any other threads.        */
  48
  49     ucln_lib_cleanup();
  50
  51     umtx_destroy(&gICUInitMutex);
  52     umtx_cleanup();
  53     cmemory_cleanup();       /* undo any heap functions set by u_setMemoryFunctions(). */
  54     gICUInitialized = FALSE;
  55     UTRACE_EXIT();           /* Must be before utrace_cleanup(), which turns off tracing. */
  56 /*#if U_ENABLE_TRACING*/
  57     utrace_cleanup();
  58 /*#endif*/
  59 }
  60
  61 U_CAPI void U_EXPORT2 ucln_cleanupOne(ECleanupLibraryType libType)
  62 {
  63     if (gLibCleanupFunctions[libType])
  64     {
  65         gLibCleanupFunctions[libType]();
  66         gLibCleanupFunctions[libType] = NULL;
  67     }
  68 }
  69
  70 U_CFUNC void
  71 ucln_common_registerCleanup(ECleanupCommonType type,
  72                             cleanupFunc *func)
  73 {
  74     U_ASSERT(UCLN_COMMON_START < type && type < UCLN_COMMON_COUNT);
  75     if (UCLN_COMMON_START < type && type < UCLN_COMMON_COUNT)
  76     {
  77         gCommonCleanupFunctions[type] = func;
  78     }
  79 #if !UCLN_NO_AUTO_CLEANUP && (defined(UCLN_AUTO_ATEXIT) || defined(UCLN_AUTO_LOCAL))
  80     ucln_registerAutomaticCleanup();
  81 #endif
  82 }
  83
  84 U_CAPI void U_EXPORT2
  85 ucln_registerCleanup(ECleanupLibraryType type,
  86                      cleanupFunc *func)
  87 {
  88     U_ASSERT(UCLN_START < type && type < UCLN_COMMON);
  89     if (UCLN_START < type && type < UCLN_COMMON)
  90     {
  91         gLibCleanupFunctions[type] = func;
  92     }
  93 }
  94
  95 U_CFUNC UBool ucln_lib_cleanup(void) {
  96     ECleanupLibraryType libType = UCLN_START;
  97     ECleanupCommonType commonFunc = UCLN_COMMON_START;
  98
  99     for (libType++; libType<UCLN_COMMON; libType++) {
 100         ucln_cleanupOne(libType);
 101     }
 102
 103     for (commonFunc++; commonFunc<UCLN_COMMON_COUNT; commonFunc++) {
 104         if (gCommonCleanupFunctions[commonFunc])
 105         {
 106             gCommonCleanupFunctions[commonFunc]();
 107             gCommonCleanupFunctions[commonFunc] = NULL;
 108         }
 109     }
 110 #if !UCLN_NO_AUTO_CLEANUP && (defined(UCLN_AUTO_ATEXIT) || defined(UCLN_AUTO_LOCAL))
 111     ucln_unRegisterAutomaticCleanup();
 112 #endif
 113     return TRUE;
 114 }