112 lines
3.3 KiB
C
112 lines
3.3 KiB
C
/*
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******************************************************************************
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* *
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* Copyright (C) 2001-2004, International Business Machines *
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* Corporation and others. All Rights Reserved. *
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* *
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******************************************************************************
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* file name: uinit.c
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* encoding: US-ASCII
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* tab size: 8 (not used)
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* indentation:4
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*
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* created on: 2001July05
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* created by: George Rhoten
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*/
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#include "unicode/utypes.h"
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#include "unicode/uclean.h"
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#include "utracimp.h"
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#include "ustr_imp.h"
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#include "unormimp.h"
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#include "ucln_cmn.h"
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#include "umutex.h"
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#include "ucln.h"
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#include "cmemory.h"
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#include "uassert.h"
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static UBool gICUInitialized = FALSE;
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static UMTX gICUInitMutex = NULL;
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static cleanupFunc *gLibCleanupFunctions[UCLN_COMMON];
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U_CAPI void U_EXPORT2
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ucln_registerCleanup(ECleanupLibraryType type,
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cleanupFunc *func)
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{
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U_ASSERT(UCLN_START < type && type < UCLN_COMMON);
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if (UCLN_START < type && type < UCLN_COMMON)
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{
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gLibCleanupFunctions[type] = func;
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}
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}
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/************************************************
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The cleanup order is important in this function.
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Please be sure that you have read ucln.h
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************************************************/
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U_CAPI void U_EXPORT2
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u_cleanup(void)
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{
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ECleanupLibraryType libType;
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UTRACE_ENTRY_OC(UTRACE_U_CLEANUP);
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umtx_lock(NULL); /* Force a memory barrier, so that we are sure to see */
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umtx_unlock(NULL); /* all state left around by any other threads. */
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for (libType = UCLN_START+1; libType<UCLN_COMMON; libType++) {
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if (gLibCleanupFunctions[libType])
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{
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gLibCleanupFunctions[libType]();
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gLibCleanupFunctions[libType] = NULL;
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}
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}
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ucln_common_lib_cleanup();
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umtx_destroy(&gICUInitMutex);
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umtx_cleanup();
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cmemory_cleanup(); /* undo any heap functions set by u_setMemoryFunctions(). */
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gICUInitialized = FALSE;
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UTRACE_EXIT(); /* Must be before utrace_cleanup(), which turns off tracing. */
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utrace_cleanup();
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}
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/*
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*
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* ICU Initialization Function. Force loading and/or initialization of
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* any shared data that could potentially be used concurrently
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* by multiple threads.
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*/
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U_CAPI void U_EXPORT2
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u_init(UErrorCode *status) {
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UTRACE_ENTRY_OC(UTRACE_U_INIT);
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/* Make sure the global mutexes are initialized. */
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umtx_init(NULL);
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umtx_lock(&gICUInitMutex);
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if (gICUInitialized || U_FAILURE(*status)) {
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umtx_unlock(&gICUInitMutex);
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UTRACE_EXIT_STATUS(*status);
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return;
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}
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/* Do any required init for services that don't have open operations
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* and use "only" the double-check initialization method for performance
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* reasons (avoiding a mutex lock even for _checking_ whether the
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* initialization had occurred).
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*/
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/* Char Properties */
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uprv_loadPropsData(status);
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#if !UCONFIG_NO_NORMALIZATION
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/* Normalization */
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unorm_haveData(status);
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#endif
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gICUInitialized = TRUE; /* TODO: don't set if U_FAILURE? */
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umtx_unlock(&gICUInitMutex);
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UTRACE_EXIT_STATUS(*status);
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}
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