icuSources/common/ucln_cmn.c

   1 /*
   2 ******************************************************************************
   3 * Copyright (C) 2001-2013, 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 "cmutex.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 static cleanupFunc *gCommonCleanupFunctions[UCLN_COMMON_COUNT];
  29 static cleanupFunc *gLibCleanupFunctions[UCLN_COMMON];
  30
  31
  32 /************************************************
  33  The cleanup order is important in this function.
  34  Please be sure that you have read ucln.h
  35  ************************************************/
  36 U_CAPI void U_EXPORT2
  37 u_cleanup(void)
  38 {
  39     UTRACE_ENTRY_OC(UTRACE_U_CLEANUP);
  40     umtx_lock(NULL);     /* Force a memory barrier, so that we are sure to see   */
  41     umtx_unlock(NULL);   /*   all state left around by any other threads.        */
  42
  43     ucln_lib_cleanup();
  44
  45     cmemory_cleanup();       /* undo any heap functions set by u_setMemoryFunctions(). */
  46     UTRACE_EXIT();           /* Must be before utrace_cleanup(), which turns off tracing. */
  47 /*#if U_ENABLE_TRACING*/
  48     utrace_cleanup();
  49 /*#endif*/
  50 }
  51
  52 U_CAPI void U_EXPORT2 ucln_cleanupOne(ECleanupLibraryType libType)
  53 {
  54     if (gLibCleanupFunctions[libType])
  55     {
  56         gLibCleanupFunctions[libType]();
  57         gLibCleanupFunctions[libType] = NULL;
  58     }
  59 }
  60
  61 U_CFUNC void
  62 ucln_common_registerCleanup(ECleanupCommonType type,
  63                             cleanupFunc *func)
  64 {
  65     U_ASSERT(UCLN_COMMON_START < type && type < UCLN_COMMON_COUNT);
  66     if (UCLN_COMMON_START < type && type < UCLN_COMMON_COUNT)
  67     {
  68         gCommonCleanupFunctions[type] = func;
  69     }
  70 #if !UCLN_NO_AUTO_CLEANUP && (defined(UCLN_AUTO_ATEXIT) || defined(UCLN_AUTO_LOCAL))
  71     ucln_registerAutomaticCleanup();
  72 #endif
  73 }
  74
  75 U_CAPI void U_EXPORT2
  76 ucln_registerCleanup(ECleanupLibraryType type,
  77                      cleanupFunc *func)
  78 {
  79     U_ASSERT(UCLN_START < type && type < UCLN_COMMON);
  80     if (UCLN_START < type && type < UCLN_COMMON)
  81     {
  82         gLibCleanupFunctions[type] = func;
  83     }
  84 }
  85
  86 U_CFUNC UBool ucln_lib_cleanup(void) {
  87     ECleanupLibraryType libType = UCLN_START;
  88     ECleanupCommonType commonFunc = UCLN_COMMON_START;
  89
  90     for (libType++; libType<UCLN_COMMON; libType++) {
  91         ucln_cleanupOne(libType);
  92     }
  93
  94     for (commonFunc++; commonFunc<UCLN_COMMON_COUNT; commonFunc++) {
  95         if (gCommonCleanupFunctions[commonFunc])
  96         {
  97             gCommonCleanupFunctions[commonFunc]();
  98             gCommonCleanupFunctions[commonFunc] = NULL;
  99         }
 100     }
 101 #if !UCLN_NO_AUTO_CLEANUP && (defined(UCLN_AUTO_ATEXIT) || defined(UCLN_AUTO_LOCAL))
 102     ucln_unRegisterAutomaticCleanup();
 103 #endif
 104     return TRUE;
 105 }