1/* 2****************************************************************************** 3* * 4* Copyright (C) 2001-2010, International Business Machines * 5* Corporation and others. All Rights Reserved. * 6* * 7****************************************************************************** 8* file name: uinit.c 9* encoding: US-ASCII 10* tab size: 8 (not used) 11* indentation:4 12* 13* created on: 2001July05 14* created by: George Rhoten 15*/ 16 17#include "unicode/utypes.h" 18#include "unicode/icuplug.h" 19#include "unicode/uclean.h" 20#include "cmemory.h" 21#include "icuplugimp.h" 22#include "uassert.h" 23#include "ucln.h" 24#include "ucln_cmn.h" 25#include "ucnv_io.h" 26#include "umutex.h" 27#include "utracimp.h" 28 29static UBool gICUInitialized = FALSE; 30static UMTX gICUInitMutex = NULL; 31 32 33/************************************************ 34 The cleanup order is important in this function. 35 Please be sure that you have read ucln.h 36 ************************************************/ 37U_CAPI void U_EXPORT2 38u_cleanup(void) 39{ 40 UTRACE_ENTRY_OC(UTRACE_U_CLEANUP); 41 umtx_lock(NULL); /* Force a memory barrier, so that we are sure to see */ 42 umtx_unlock(NULL); /* all state left around by any other threads. */ 43 44 ucln_lib_cleanup(); 45 46 umtx_destroy(&gICUInitMutex); 47 umtx_cleanup(); 48 cmemory_cleanup(); /* undo any heap functions set by u_setMemoryFunctions(). */ 49 gICUInitialized = FALSE; 50 UTRACE_EXIT(); /* Must be before utrace_cleanup(), which turns off tracing. */ 51/*#if U_ENABLE_TRACING*/ 52 utrace_cleanup(); 53/*#endif*/ 54} 55 56/* 57 * ICU Initialization Function. Need not be called. 58 */ 59U_CAPI void U_EXPORT2 60u_init(UErrorCode *status) { 61 UTRACE_ENTRY_OC(UTRACE_U_INIT); 62 /* initialize plugins */ 63 uplug_init(status); 64 65 umtx_lock(&gICUInitMutex); 66 if (gICUInitialized || U_FAILURE(*status)) { 67 umtx_unlock(&gICUInitMutex); 68 UTRACE_EXIT_STATUS(*status); 69 return; 70 } 71 72 /* 73 * 2005-may-02 74 * 75 * ICU4C 3.4 (jitterbug 4497) hardcodes the data for Unicode character 76 * properties for APIs that want to be fast. 77 * Therefore, we need not load them here nor check for errors. 78 * Instead, we load the converter alias table to see if any ICU data 79 * is available. 80 * Users should really open the service objects they need and check 81 * for errors there, to make sure that the actual items they need are 82 * available. 83 */ 84#if !UCONFIG_NO_CONVERSION 85 ucnv_io_countKnownConverters(status); 86#endif 87 88 gICUInitialized = TRUE; /* TODO: don't set if U_FAILURE? */ 89 umtx_unlock(&gICUInitMutex); 90 UTRACE_EXIT_STATUS(*status); 91} 92