scuffed-code/icu4c/source/common/uinit.c

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/*
******************************************************************************
* *
* Copyright (C) 2001-2005, International Business Machines *
* Corporation and others. All Rights Reserved. *
* *
******************************************************************************
* file name: uinit.c
* encoding: US-ASCII
* tab size: 8 (not used)
* indentation:4
*
* created on: 2001July05
* created by: George Rhoten
*/
#include "unicode/utypes.h"
#include "unicode/uclean.h"
#include "utracimp.h"
#include "ustr_imp.h"
#include "unormimp.h"
#include "ucln_cmn.h"
#include "ucnv_io.h"
#include "umutex.h"
#include "ucln.h"
#include "cmemory.h"
#include "uassert.h"
static UBool gICUInitialized = FALSE;
static UMTX gICUInitMutex = NULL;
static cleanupFunc *gLibCleanupFunctions[UCLN_COMMON];
U_CAPI void U_EXPORT2
ucln_registerCleanup(ECleanupLibraryType type,
cleanupFunc *func)
{
U_ASSERT(UCLN_START < type && type < UCLN_COMMON);
if (UCLN_START < type && type < UCLN_COMMON)
{
gLibCleanupFunctions[type] = func;
}
}
/************************************************
The cleanup order is important in this function.
Please be sure that you have read ucln.h
************************************************/
U_CAPI void U_EXPORT2
u_cleanup(void)
{
ECleanupLibraryType libType;
UTRACE_ENTRY_OC(UTRACE_U_CLEANUP);
umtx_lock(NULL); /* Force a memory barrier, so that we are sure to see */
umtx_unlock(NULL); /* all state left around by any other threads. */
for (libType = UCLN_START+1; libType<UCLN_COMMON; libType++) {
if (gLibCleanupFunctions[libType])
{
gLibCleanupFunctions[libType]();
gLibCleanupFunctions[libType] = NULL;
}
}
ucln_common_lib_cleanup();
umtx_destroy(&gICUInitMutex);
umtx_cleanup();
cmemory_cleanup(); /* undo any heap functions set by u_setMemoryFunctions(). */
gICUInitialized = FALSE;
UTRACE_EXIT(); /* Must be before utrace_cleanup(), which turns off tracing. */
#if U_ENABLE_TRACING
utrace_cleanup();
#endif
}
/*
*
* ICU Initialization Function. Force loading and/or initialization of
* any shared data that could potentially be used concurrently
* by multiple threads.
*/
U_CAPI void U_EXPORT2
u_init(UErrorCode *status) {
UTRACE_ENTRY_OC(UTRACE_U_INIT);
/* Make sure the global mutexes are initialized. */
umtx_init(NULL);
umtx_lock(&gICUInitMutex);
if (gICUInitialized || U_FAILURE(*status)) {
umtx_unlock(&gICUInitMutex);
UTRACE_EXIT_STATUS(*status);
return;
}
#if 1
/*
* 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.
*/
#if !UCONFIG_NO_CONVERSION
ucnv_io_countTotalAliases(status);
#endif
#else
/* Do any required init for services that don't have open operations
* and use "only" the double-check initialization method for performance
* reasons (avoiding a mutex lock even for _checking_ whether the
* initialization had occurred).
*/
/* Char Properties */
uprv_loadPropsData(status);
/* load the case and bidi properties but don't fail if they are not available */
u_isULowercase(0x61);
u_getIntPropertyValue(0x200D, UCHAR_JOINING_TYPE); /* ZERO WIDTH JOINER: Join_Causing */
#if !UCONFIG_NO_NORMALIZATION
/* Normalization */
unorm_haveData(status);
#endif
#endif
gICUInitialized = TRUE; /* TODO: don't set if U_FAILURE? */
umtx_unlock(&gICUInitMutex);
UTRACE_EXIT_STATUS(*status);
}