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      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 }
     71