Upstream version 9.38.198.0

[platform/framework/web/crosswalk.git] / src / third_party / icu / source / i18n / hebrwcal.cpp

diff --git a/src/third_party/icu/source/i18n/hebrwcal.cpp b/src/third_party/icu/source/i18n/hebrwcal.cpp
index 3a6ef43..aa16adf 100644 (file)
--- a/src/third_party/icu/source/i18n/hebrwcal.cpp
+++ b/src/third_party/icu/source/i18n/hebrwcal.cpp
@@ -1,6 +1,6 @@
 /*
 ******************************************************************************
-* Copyright (C) 2003-2008, International Business Machines Corporation
+* Copyright (C) 2003-2013, International Business Machines Corporation
 * and others. All Rights Reserved.
 ******************************************************************************
 *
@@ -131,7 +131,7 @@ static const int16_t  LEAP_MONTH_START[][3] = {
     {  383,        384,        385  },          // Elul
 };
 
-static U_NAMESPACE_QUALIFIER CalendarCache *gCache =  NULL;
+static icu::CalendarCache *gCache =  NULL;
 
 U_CDECL_BEGIN
 static UBool calendar_hebrew_cleanup(void) {
@@ -668,88 +668,52 @@ HebrewCalendar::inDaylightTime(UErrorCode& status) const
     return (UBool)(U_SUCCESS(status) ? (internalGet(UCAL_DST_OFFSET) != 0) : FALSE);
 }
 
-// default century
-const UDate     HebrewCalendar::fgSystemDefaultCentury        = DBL_MIN;
-const int32_t   HebrewCalendar::fgSystemDefaultCenturyYear    = -1;
-
-UDate           HebrewCalendar::fgSystemDefaultCenturyStart       = DBL_MIN;
-int32_t         HebrewCalendar::fgSystemDefaultCenturyStartYear   = -1;
-
+/**
+ * The system maintains a static default century start date and Year.  They are
+ * initialized the first time they are used.  Once the system default century date 
+ * and year are set, they do not change.
+ */
+static UDate           gSystemDefaultCenturyStart       = DBL_MIN;
+static int32_t         gSystemDefaultCenturyStartYear   = -1;
+static icu::UInitOnce  gSystemDefaultCenturyInit        = U_INITONCE_INITIALIZER;
 
 UBool HebrewCalendar::haveDefaultCentury() const
 {
     return TRUE;
 }
 
-UDate HebrewCalendar::defaultCenturyStart() const
-{
-    return internalGetDefaultCenturyStart();
-}
-
-int32_t HebrewCalendar::defaultCenturyStartYear() const
-{
-    return internalGetDefaultCenturyStartYear();
-}
-
-UDate
-HebrewCalendar::internalGetDefaultCenturyStart() const
-{
-    // lazy-evaluate systemDefaultCenturyStart
-    UBool needsUpdate;
-    UMTX_CHECK(NULL, (fgSystemDefaultCenturyStart == fgSystemDefaultCentury), needsUpdate);
-
-    if (needsUpdate) {
-        initializeSystemDefaultCentury();
-    }
-
-    // use defaultCenturyStart unless it's the flag value;
-    // then use systemDefaultCenturyStart
-
-    return fgSystemDefaultCenturyStart;
-}
-
-int32_t
-HebrewCalendar::internalGetDefaultCenturyStartYear() const
-{
-    // lazy-evaluate systemDefaultCenturyStartYear
-    UBool needsUpdate;
-    UMTX_CHECK(NULL, (fgSystemDefaultCenturyStart == fgSystemDefaultCentury), needsUpdate);
-
-    if (needsUpdate) {
-        initializeSystemDefaultCentury();
-    }
-
-    // use defaultCenturyStart unless it's the flag value;
-    // then use systemDefaultCenturyStartYear
-
-    return fgSystemDefaultCenturyStartYear;
-}
-
-void
-HebrewCalendar::initializeSystemDefaultCentury()
+static void U_CALLCONV initializeSystemDefaultCentury()
 {
     // initialize systemDefaultCentury and systemDefaultCenturyYear based
     // on the current time.  They'll be set to 80 years before
     // the current time.
     UErrorCode status = U_ZERO_ERROR;
     HebrewCalendar calendar(Locale("@calendar=hebrew"),status);
-    if (U_SUCCESS(status))
-    {
+    if (U_SUCCESS(status)) {
         calendar.setTime(Calendar::getNow(), status);
         calendar.add(UCAL_YEAR, -80, status);
-        UDate    newStart =  calendar.getTime(status);
-        int32_t  newYear  =  calendar.get(UCAL_YEAR, status);
-        umtx_lock(NULL);
-        if (fgSystemDefaultCenturyStart == fgSystemDefaultCentury) {
-            fgSystemDefaultCenturyStartYear = newYear;
-            fgSystemDefaultCenturyStart = newStart;
-        }
-        umtx_unlock(NULL);
+
+        gSystemDefaultCenturyStart = calendar.getTime(status);
+        gSystemDefaultCenturyStartYear = calendar.get(UCAL_YEAR, status);
     }
     // We have no recourse upon failure unless we want to propagate the failure
     // out.
 }
 
+
+UDate HebrewCalendar::defaultCenturyStart() const {
+    // lazy-evaluate systemDefaultCenturyStart
+    umtx_initOnce(gSystemDefaultCenturyInit, &initializeSystemDefaultCentury);
+    return gSystemDefaultCenturyStart;
+}
+
+int32_t HebrewCalendar::defaultCenturyStartYear() const {
+    // lazy-evaluate systemDefaultCenturyStartYear
+    umtx_initOnce(gSystemDefaultCenturyInit, &initializeSystemDefaultCentury);
+    return gSystemDefaultCenturyStartYear;
+}
+
+
 UOBJECT_DEFINE_RTTI_IMPLEMENTATION(HebrewCalendar)
 
 U_NAMESPACE_END