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      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 }
     73