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
25U_NAMESPACE_BEGIN
26
27static UInitOnce gICUInitOnce = U_INITONCE_INITIALIZER;
28
29static UBool U_CALLCONV uinit_cleanup() {
30    gICUInitOnce.reset();
31    return TRUE;
32}
33
34static void U_CALLCONV
35initData(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
58U_NAMESPACE_END
59
60U_NAMESPACE_USE
61
62/*
63 * ICU Initialization Function. Need not be called.
64 */
65U_CAPI void U_EXPORT2
66u_init(UErrorCode *status) {
67    UTRACE_ENTRY_OC(UTRACE_U_INIT);
68    umtx_initOnce(gICUInitOnce, &initData, *status);
69    UTRACE_EXIT_STATUS(*status);
70}
71