initial commit, 4.5 stable

thirdparty/icu4c/common/uinit.cpp

@@ -0,0 +1,74 @@
+// © 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
+/*
+******************************************************************************
+* Copyright (C) 2001-2015, International Business Machines
+*                Corporation and others. All Rights Reserved.
+******************************************************************************
+*   file name:  uinit.cpp
+*   encoding:   UTF-8
+*   tab size:   8 (not used)
+*   indentation:4
+*
+*   created on: 2001July05
+*   created by: George Rhoten
+*/
+
+#include "unicode/utypes.h"
+#include "unicode/icuplug.h"
+#include "unicode/uclean.h"
+#include "cmemory.h"
+#include "icuplugimp.h"
+#include "ucln_cmn.h"
+#include "ucnv_io.h"
+#include "umutex.h"
+#include "utracimp.h"
+
+U_NAMESPACE_BEGIN
+
+static UInitOnce gICUInitOnce {};
+
+static UBool U_CALLCONV uinit_cleanup() {
+    gICUInitOnce.reset();
+    return true;
+}
+
+static void U_CALLCONV
+initData(UErrorCode &status)
+{
+#if UCONFIG_ENABLE_PLUGINS
+    /* initialize plugins */
+    uplug_init(&status);
+#endif
+
+#if !UCONFIG_NO_CONVERSION
+    /*
+     * 2005-may-02
+     *
+     * ICU4C 3.4 (jitterbug 4497) hardcodes the data for Unicode character
+     * properties for APIs that want to be fast.
+     * Therefore, we need not load them here nor check for errors.
+     * Instead, we load the converter alias table to see if any ICU data
+     * is available.
+     * Users should really open the service objects they need and check
+     * for errors there, to make sure that the actual items they need are
+     * available.
+     */
+    ucnv_io_countKnownConverters(&status);
+#endif
+    ucln_common_registerCleanup(UCLN_COMMON_UINIT, uinit_cleanup);
+}
+
+U_NAMESPACE_END
+
+U_NAMESPACE_USE
+
+/*
+ * ICU Initialization Function. Need not be called.
+ */
+U_CAPI void U_EXPORT2
+u_init(UErrorCode *status) {
+    UTRACE_ENTRY_OC(UTRACE_U_INIT);
+    umtx_initOnce(gICUInitOnce, &initData, *status);
+    UTRACE_EXIT_STATUS(*status);
+}