icuSources/common/uinit.cpp

   1 /*
   2 ******************************************************************************
   3 * Copyright (C) 2001-2013, International Business Machines
   4 *                Corporation and others. All Rights Reserved.
   5 ******************************************************************************
   6 *   file name:  uinit.cpp
   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/icuplug.h"
  17 #include "unicode/uclean.h"
  18 #include "cmemory.h"
  19 #include "icuplugimp.h"
  20 #include "ucln_cmn.h"
  21 #include "ucnv_io.h"
  22 #include "umutex.h"
  23 #include "utracimp.h"
  24
  25 U_NAMESPACE_BEGIN
  26
  27 static UInitOnce gICUInitOnce = U_INITONCE_INITIALIZER;
  28
  29 static UBool U_CALLCONV uinit_cleanup() {
  30     gICUInitOnce.reset();
  31     return TRUE;
  32 }
  33
  34 static void U_CALLCONV
  35 initData(UErrorCode &status)
  36 {
  37     /* initialize plugins */
  38     uplug_init(&status);
  39
  40 #if !UCONFIG_NO_CONVERSION
  41     /*
  42      * 2005-may-02
  43      *
  44      * ICU4C 3.4 (jitterbug 4497) hardcodes the data for Unicode character
  45      * properties for APIs that want to be fast.
  46      * Therefore, we need not load them here nor check for errors.
  47      * Instead, we load the converter alias table to see if any ICU data
  48      * is available.
  49      * Users should really open the service objects they need and check
  50      * for errors there, to make sure that the actual items they need are
  51      * available.
  52      */
  53     ucnv_io_countKnownConverters(&status);
  54 #endif
  55     ucln_common_registerCleanup(UCLN_COMMON_UINIT, uinit_cleanup);
  56 }
  57
  58 U_NAMESPACE_END
  59
  60 U_NAMESPACE_USE
  61
  62 /*
  63  * ICU Initialization Function. Need not be called.
  64  */
  65 U_CAPI void U_EXPORT2
  66 u_init(UErrorCode *status) {
  67     UTRACE_ENTRY_OC(UTRACE_U_INIT);
  68     umtx_initOnce(gICUInitOnce, &initData, *status);
  69     UTRACE_EXIT_STATUS(*status);
  70 }