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Diffstat (limited to 'sal/inc/rtl/alloc.h')
| -rw-r--r-- | sal/inc/rtl/alloc.h | 266 |
1 files changed, 266 insertions, 0 deletions
diff --git a/sal/inc/rtl/alloc.h b/sal/inc/rtl/alloc.h new file mode 100644 index 000000000000..7b3967de716b --- /dev/null +++ b/sal/inc/rtl/alloc.h @@ -0,0 +1,266 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +#ifndef _RTL_ALLOC_H_ +#define _RTL_ALLOC_H_ + +# include <sal/types.h> + +#ifdef __cplusplus +extern "C" { +#endif + + +/** Allocate memory. + @descr A call to this function will return NULL upon the requested + memory size being either zero or larger than currently allocatable. + + @param Bytes [in] memory size. + @return pointer to allocated memory. + */ +void * SAL_CALL rtl_allocateMemory ( + sal_Size Bytes +) SAL_THROW_EXTERN_C(); + + +/** Reallocate memory. + @descr A call to this function with parameter 'Ptr' being NULL + is equivalent to a rtl_allocateMemory() call. + + A call to this function with parameter 'Bytes' being 0 + is equivalent to a rtl_freeMemory() call. + + @see rtl_allocateMemory() + @see rtl_freeMemory() + + @param Ptr [in] pointer to previously allocated memory. + @param Bytes [in] new memory size. + @return pointer to reallocated memory. May differ from Ptr. + */ +void * SAL_CALL rtl_reallocateMemory ( + void * Ptr, + sal_Size Bytes +) SAL_THROW_EXTERN_C(); + + +/** Free memory. + @param Ptr [in] pointer to previously allocated memory. + @return none. Memory is released. Ptr is invalid. + */ +void SAL_CALL rtl_freeMemory ( + void * Ptr +) SAL_THROW_EXTERN_C(); + + +/** Allocate and zero memory. + @descr A call to this function will return NULL upon the requested + memory size being either zero or larger than currently allocatable. + + @param Bytes [in] memory size. + @return pointer to allocated and zero'ed memory. + */ +void * SAL_CALL rtl_allocateZeroMemory ( + sal_Size Bytes +) SAL_THROW_EXTERN_C(); + + +/** Zero and free memory. + @param Ptr [in] pointer to previously allocated memory. + @param Bytes [in] memory size. + @return none. Memory is zero'ed and released. Ptr is invalid. + */ +void SAL_CALL rtl_freeZeroMemory ( + void * Ptr, + sal_Size Bytes +) SAL_THROW_EXTERN_C(); + + +/** Opaque rtl_arena_type. + */ +typedef struct rtl_arena_st rtl_arena_type; + +#define RTL_ARENA_NAME_LENGTH 31 + + +/** rtl_arena_create() + * + * @param pName [in] descriptive name; for debugging purposes. + * @param quantum [in] resource allocation unit / granularity; rounded up to next power of 2. + * @param quantum_cache_max [in] max resources to cache; rounded up to next multiple of quantum; usually 0. + * @param source_arena [in] passed as argument to source_alloc, source_free; usually NULL. + * @param source_alloc [in] function to allocate resources; usually rtl_arena_alloc. + * @param source_free [in] function to free resources; usually rtl_arena_free. + * @param nFlags [in] flags; usually 0. + * + * @return pointer to rtl_arena_type, or NULL upon failure. + * + * @see rtl_arena_destroy() + */ +rtl_arena_type * +SAL_CALL rtl_arena_create ( + const char * pName, + sal_Size quantum, + sal_Size quantum_cache_max, + rtl_arena_type * source_arena, + void * (SAL_CALL * source_alloc)(rtl_arena_type *, sal_Size *), + void (SAL_CALL * source_free) (rtl_arena_type *, void *, sal_Size), + int nFlags +) SAL_THROW_EXTERN_C(); + + +/** rtl_arena_destroy() + * + * @param pArena [in] the arena to destroy. + * @return None + * + * @see rtl_arena_create() + */ +void +SAL_CALL rtl_arena_destroy ( + rtl_arena_type * pArena +) SAL_THROW_EXTERN_C(); + + +/** rtl_arena_alloc() + * + * @param pArena [in] arena from which resource is allocated. + * @param pBytes [inout] size of resource to allocate. + * + * @return allocated resource, or NULL upon failure. + * + * @see rtl_arena_free() + */ +void * +SAL_CALL rtl_arena_alloc ( + rtl_arena_type * pArena, + sal_Size * pBytes +) SAL_THROW_EXTERN_C(); + + +/** rtl_arena_free() + * + * @param pArena [in] arena from which resource was allocated. + * @param pAddr [in] resource to free. + * @param nBytes [in] size of resource. + * + * @return None. + * + * @see rtl_arena_alloc() + */ +void +SAL_CALL rtl_arena_free ( + rtl_arena_type * pArena, + void * pAddr, + sal_Size nBytes +) SAL_THROW_EXTERN_C(); + + +/** Opaque rtl_cache_type. + */ +typedef struct rtl_cache_st rtl_cache_type; + +#define RTL_CACHE_NAME_LENGTH 31 + +#define RTL_CACHE_FLAG_BULKDESTROY 1 + +/** rtl_cache_create() + * + * @param pName [in] descriptive name; for debugging purposes. + * @param nObjSize [in] object size. + * @param nObjAlign [in] object alignment; usually 0 for suitable default. + * @param constructor [in] object constructor callback function; returning 1 for success or 0 for failure. + * @param destructor [in] object destructor callback function. + * @param reclaim [in] reclaim callback function. + * @param pUserArg [in] opaque argument passed to callback functions. + * @param nFlags [in] flags. + * + * @return pointer to rtl_cache_type, or NULL upon failure. + * + * @see rtl_cache_destroy() + */ +rtl_cache_type * +SAL_CALL rtl_cache_create ( + const char * pName, + sal_Size nObjSize, + sal_Size nObjAlign, + int (SAL_CALL * constructor)(void * pObj, void * pUserArg), + void (SAL_CALL * destructor) (void * pObj, void * pUserArg), + void (SAL_CALL * reclaim) (void * pUserArg), + void * pUserArg, + rtl_arena_type * pSource, + int nFlags +) SAL_THROW_EXTERN_C(); + + +/** rtl_cache_destroy() + * + * @param pCache [in] the cache to destroy. + * + * @return None. + * + * @see rtl_cache_create() + */ +void +SAL_CALL rtl_cache_destroy ( + rtl_cache_type * pCache +) SAL_THROW_EXTERN_C(); + + +/** rtl_cache_alloc() + * + * @param pCache [in] cache from which object is allocated. + * + * @return pointer to allocated object, or NULL upon failure. + */ +void * +SAL_CALL rtl_cache_alloc ( + rtl_cache_type * pCache +) SAL_THROW_EXTERN_C(); + + +/** rtl_cache_free() + * + * @param pCache [in] cache from which object was allocated. + * @param pObj [in] object to free. + * + * @return None. + * + * @see rtl_cache_alloc() + */ +void +SAL_CALL rtl_cache_free ( + rtl_cache_type * pCache, + void * pObj +) SAL_THROW_EXTERN_C(); + + +#ifdef __cplusplus +} +#endif + +#endif /*_RTL_ALLOC_H_ */ + |