Check in the pristine copy of ICU 4.6...

icu46/source/io/ucln_io.c

+/*
+******************************************************************************
+*                                                                            *
+* Copyright (C) 2001-2009, International Business Machines                   *
+*                Corporation and others. All Rights Reserved.                *
+*                                                                            *
+******************************************************************************
+*   file name:  ucln_io.c
+*   encoding:   US-ASCII
+*   tab size:   8 (not used)
+*   indentation:4
+*
+*   created on: 2006August11
+*   created by: George Rhoten
+*/
+
+#include "ucln.h"
+#include "ucln_io.h"
+#include "umutex.h"
+#include "uassert.h"
+
+/**  Auto-client */
+#define UCLN_TYPE UCLN_IO
+#include "ucln_imp.h"
+
+/* Leave this copyright notice here! It needs to go somewhere in this library. */
+static const char copyright[] = U_COPYRIGHT_STRING;
+
+static cleanupFunc *gCleanupFunctions[UCLN_IO_COUNT];
+
+static UBool io_cleanup(void)
+{
+    ECleanupIOType libType = UCLN_IO_START;
+
+    while (++libType<UCLN_IO_COUNT) {
+        if (gCleanupFunctions[libType])
+        {
+            gCleanupFunctions[libType]();
+            gCleanupFunctions[libType] = NULL;
+        }
+    }
+#if !UCLN_NO_AUTO_CLEANUP && (defined(UCLN_AUTO_ATEXIT) || defined(UCLN_AUTO_LOCAL))
+    ucln_unRegisterAutomaticCleanup();
+#endif
+    return TRUE;
+}
+
+void ucln_io_registerCleanup(ECleanupIOType type,
+                               cleanupFunc *func)
+{
+    U_ASSERT(UCLN_IO_START < type && type < UCLN_IO_COUNT);
+    ucln_registerCleanup(UCLN_IO, io_cleanup);
+    if (UCLN_IO_START < type && type < UCLN_IO_COUNT)
+    {
+        gCleanupFunctions[type] = func;
+    }
+
+#if !UCLN_NO_AUTO_CLEANUP && (defined(UCLN_AUTO_ATEXIT) || defined(UCLN_AUTO_LOCAL))
+    ucln_registerAutomaticCleanup();
+#endif
+}
+