icuSources/common/uinit.cpp

   1 /*
   2 ******************************************************************************
   3 * Copyright (C) 2001-2015, 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 #if UCONFIG_ENABLE_PLUGINS
  38     /* initialize plugins */
  39     uplug_init(&status);
  40 #endif
  41
  42 #if !UCONFIG_NO_CONVERSION
  43     /*
  44      * 2005-may-02
  45      *
  46      * ICU4C 3.4 (jitterbug 4497) hardcodes the data for Unicode character
  47      * properties for APIs that want to be fast.
  48      * Therefore, we need not load them here nor check for errors.
  49      * Instead, we load the converter alias table to see if any ICU data
  50      * is available.
  51      * Users should really open the service objects they need and check
  52      * for errors there, to make sure that the actual items they need are
  53      * available.
  54      */
  55     ucnv_io_countKnownConverters(&status);
  56 #endif
  57     ucln_common_registerCleanup(UCLN_COMMON_UINIT, uinit_cleanup);
  58 }
  59
  60 U_NAMESPACE_END
  61
  62 U_NAMESPACE_USE
  63
  64 /*
  65  * ICU Initialization Function. Need not be called.
  66  */
  67 U_CAPI void U_EXPORT2
  68 u_init(UErrorCode *status) {
  69     UTRACE_ENTRY_OC(UTRACE_U_INIT);
  70     umtx_initOnce(gICUInitOnce, &initData, *status);
  71     UTRACE_EXIT_STATUS(*status);
  72 }