1 /* 2 ****************************************************************************** 3 * 4 * Copyright (C) 1999-2010, International Business Machines 5 * Corporation and others. All Rights Reserved. 6 * 7 ******************************************************************************/ 8 9 10 /*---------------------------------------------------------------------------------- 11 * 12 * UDataMemory A class-like struct that serves as a handle to a piece of memory 13 * that contains some ICU data (resource, converters, whatever.) 14 * 15 * When an application opens ICU data (with udata_open, for example, 16 * a UDataMemory * is returned. 17 * 18 *----------------------------------------------------------------------------------*/ 19 #ifndef __UDATAMEM_H__ 20 #define __UDATAMEM_H__ 21 22 #include "unicode/udata.h" 23 #include "ucmndata.h" 24 25 struct UDataMemory { 26 const commonDataFuncs *vFuncs; /* Function Pointers for accessing TOC */ 27 28 const DataHeader *pHeader; /* Header of the memory being described by this */ 29 /* UDataMemory object. */ 30 const void *toc; /* For common memory, table of contents for */ 31 /* the pieces within. */ 32 UBool heapAllocated; /* True if this UDataMemory Object is on the */ 33 /* heap and thus needs to be deleted when closed. */ 34 35 void *mapAddr; /* For mapped or allocated memory, the start addr. */ 36 /* Only non-null if a close operation should unmap */ 37 /* the associated data. */ 38 void *map; /* Handle, or other data, OS dependent. */ 39 /* Only non-null if a close operation should unmap */ 40 /* the associated data, and additional info */ 41 /* beyond the mapAddr is needed to do that. */ 42 int32_t length; /* Length of the data in bytes; -1 if unknown. */ 43 }; 44 45 U_CFUNC UDataMemory *UDataMemory_createNewInstance(UErrorCode *pErr); 46 U_CFUNC void UDatamemory_assign (UDataMemory *dest, UDataMemory *source); 47 U_CFUNC void UDataMemory_init (UDataMemory *This); 48 U_CFUNC UBool UDataMemory_isLoaded(const UDataMemory *This); 49 U_CFUNC void UDataMemory_setData (UDataMemory *This, const void *dataAddr); 50 51 U_CFUNC const DataHeader *UDataMemory_normalizeDataPointer(const void *p); 52 53 U_CAPI int32_t U_EXPORT2 54 udata_getLength(const UDataMemory *pData); 55 56 U_CAPI const void * U_EXPORT2 57 udata_getRawMemory(const UDataMemory *pData); 58 59 #endif 60