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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 
uinit_cleanup()29 static UBool U_CALLCONV uinit_cleanup() {
30     gICUInitOnce.reset();
31     return TRUE;
32 }
33 
34 static void U_CALLCONV
initData(UErrorCode & status)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
u_init(UErrorCode * status)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