1// © 2016 and later: Unicode, Inc. and others.
2// License & terms of use: http://www.unicode.org/copyright.html
3/*
4******************************************************************************
5* Copyright (C) 2001-2015, International Business Machines
6*                Corporation and others. All Rights Reserved.
7******************************************************************************
8*   file name:  uinit.cpp
9*   encoding:   UTF-8
10*   tab size:   8 (not used)
11*   indentation:4
12*
13*   created on: 2001July05
14*   created by: George Rhoten
15*/
16
17#include "unicode/utypes.h"
18#include "unicode/icuplug.h"
19#include "unicode/uclean.h"
20#include "cmemory.h"
21#include "icuplugimp.h"
22#include "ucln_cmn.h"
23#include "ucnv_io.h"
24#include "umutex.h"
25#include "utracimp.h"
26
27U_NAMESPACE_BEGIN
28
29static UInitOnce gICUInitOnce = U_INITONCE_INITIALIZER;
30
31static UBool U_CALLCONV uinit_cleanup() {
32    gICUInitOnce.reset();
33    return TRUE;
34}
35
36static void U_CALLCONV
37initData(UErrorCode &status)
38{
39#if UCONFIG_ENABLE_PLUGINS
40    /* initialize plugins */
41    uplug_init(&status);
42#endif
43
44#if !UCONFIG_NO_CONVERSION
45    /*
46     * 2005-may-02
47     *
48     * ICU4C 3.4 (jitterbug 4497) hardcodes the data for Unicode character
49     * properties for APIs that want to be fast.
50     * Therefore, we need not load them here nor check for errors.
51     * Instead, we load the converter alias table to see if any ICU data
52     * is available.
53     * Users should really open the service objects they need and check
54     * for errors there, to make sure that the actual items they need are
55     * available.
56     */
57    ucnv_io_countKnownConverters(&status);
58#endif
59    ucln_common_registerCleanup(UCLN_COMMON_UINIT, uinit_cleanup);
60}
61
62U_NAMESPACE_END
63
64U_NAMESPACE_USE
65
66/*
67 * ICU Initialization Function. Need not be called.
68 */
69U_CAPI void U_EXPORT2
70u_init(UErrorCode *status) {
71    UTRACE_ENTRY_OC(UTRACE_U_INIT);
72    umtx_initOnce(gICUInitOnce, &initData, *status);
73    UTRACE_EXIT_STATUS(*status);
74}
75