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 29 static UBool gICUInitialized = FALSE; 30 static 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 ************************************************/ 37 U_CAPI void U_EXPORT2 u_cleanup(void)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 */ 59 U_CAPI void U_EXPORT2 u_init(UErrorCode * status)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