/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project .
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License , v . 2 . 0 . If a copy of the MPL was not distributed with this
* file , You can obtain one at http : //mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice :
*
* Licensed to the Apache Software Foundation ( ASF ) under one or more
* contributor license agreements . See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership . The ASF licenses this file to you under the Apache
* License , Version 2 . 0 ( the " License " ) ; you may not use this file
* except in compliance with the License . You may obtain a copy of
* the License at http : //www.apache.org/licenses/LICENSE-2.0 .
*/
/*
* This file is part of LibreOffice published API .
*/
#ifndef INCLUDED_RTL_ALLOC_H
#define INCLUDED_RTL_ALLOC_H
#include "sal/config.h"
#include "sal/saldllapi.h"
#include "sal/types.h"
#ifdef __cplusplus
extern "C" {
#endif
/** Allocate memory.
A call to this function will return NULL upon the requested
memory size being either zero or larger than currently allocatable .
@ param [ in ] Bytes memory size .
@ return pointer to the allocated memory .
*/
SAL_DLLPUBLIC void * SAL_CALL rtl_allocateMemory (
sal_Size Bytes
) SAL_THROW_EXTERN_C();
/** Reallocate memory.
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 [ in ] Ptr pointer to the previously allocated memory .
@ param [ in ] Bytes new memory size .
@ return pointer to the reallocated memory . May differ from Ptr .
*/
SAL_DLLPUBLIC void * SAL_CALL rtl_reallocateMemory (
void * Ptr,
sal_Size Bytes
) SAL_THROW_EXTERN_C();
/** Free memory.
Memory is released , and the pointer is invalidated .
@ param [ in ] Ptr pointer to the previously allocated memory .
*/
SAL_DLLPUBLIC void SAL_CALL rtl_freeMemory (
void * Ptr
) SAL_THROW_EXTERN_C();
/** Allocate and zero memory.
A call to this function will return NULL upon the requested
memory size being either zero or larger than currently allocatable .
@ param [ in ] Bytes memory size .
@ return pointer to the allocated and zero ' ed memory .
*/
SAL_DLLPUBLIC void * SAL_CALL rtl_allocateZeroMemory (
sal_Size Bytes
) SAL_THROW_EXTERN_C();
/** Zero memory
Fills a block of memory with zeros in a way that is guaranteed to be secure
@ param [ in ] Ptr pointer to the previously allocated memory .
@ param [ in ] Bytes memory size .
@ since LibreOffice 5 . 0
*/
SAL_DLLPUBLIC void SAL_CALL rtl_secureZeroMemory (
void * Ptr,
sal_Size Bytes
) SAL_THROW_EXTERN_C();
/** Zero and free memory.
Memory is zero ' ed with rtl_secureZeroMemory ( ) and released .
The original pointer is no longer valid .
@ param [ in ] Ptr pointer to the previously allocated memory .
@ param [ in ] Bytes memory size .
*/
SAL_DLLPUBLIC void SAL_CALL rtl_freeZeroMemory (
void * Ptr,
sal_Size Bytes
) SAL_THROW_EXTERN_C();
/** Allocate aligned memory.
A call to this function will return NULL upon the requested
memory size being either zero or larger than currently allocatable .
Memory obtained through this function must be freed with
rtl_freeAlignedMemory ( ) .
@ param [ in ] Alignment alignment in bytes , must be a power of two multiple of
sizeof ( void * ) .
@ param [ in ] Bytes memory size .
@ return pointer to the allocated memory .
@ since LibreOffice 4 . 3
*/
SAL_DLLPUBLIC void * SAL_CALL rtl_allocateAlignedMemory (
sal_Size Alignment,
sal_Size Bytes
) SAL_THROW_EXTERN_C();
/** Free memory allocated with rtl_allocateAlignedMemory().
Memory is released , and the pointer invalidated .
@ param [ in ] Ptr pointer to the previously allocated memory .
@ since LibreOffice 4 . 3
*/
SAL_DLLPUBLIC void SAL_CALL rtl_freeAlignedMemory (
void * Ptr
) SAL_THROW_EXTERN_C();
/** Opaque rtl_arena_type.
*/
struct SAL_DLLPUBLIC_RTTI rtl_arena_st;
typedef struct rtl_arena_st rtl_arena_type;
#define RTL_ARENA_NAME_LENGTH 31
/**
* @ param [ in ] pName descriptive name ; for debugging purposes .
* @ param [ in ] quantum resource allocation unit / granularity ; rounded up to next power of 2 .
* @ param [ in ] quantum_cache_max no longer used , should be 0 .
* @ param [ in ] source_arena passed as argument to source_alloc , source_free ; usually NULL .
* @ param [ in ] source_alloc function to allocate resources ; usually rtl_arena_alloc .
* @ param [ in ] source_free function to free resources ; usually rtl_arena_free .
* @ param [ in ] nFlags flags ; usually 0 .
*
* @ return pointer to rtl_arena_type , or NULL upon failure .
*
* @ see rtl_arena_destroy ( )
*/
SAL_DLLPUBLIC 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();
/**
* @ param [ in ] pArena the arena to destroy .
*
* @ see rtl_arena_create ( )
*/
SAL_DLLPUBLIC void SAL_CALL rtl_arena_destroy (
rtl_arena_type * pArena
) SAL_THROW_EXTERN_C();
/**
* @ param [ in ] pArena arena from which resource is allocated .
* @ param [ in , out ] pBytes size of resource to allocate .
*
* @ return allocated resource , or NULL upon failure .
*
* @ see rtl_arena_free ( )
*/
SAL_DLLPUBLIC void * SAL_CALL rtl_arena_alloc (
rtl_arena_type * pArena,
sal_Size * pBytes
) SAL_THROW_EXTERN_C();
/**
* @ param [ in ] pArena arena from which resource was allocated .
* @ param [ in ] pAddr resource to free .
* @ param [ in ] nBytes size of resource .
*
* @ see rtl_arena_alloc ( )
*/
SAL_DLLPUBLIC 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 /* obsolete */
/**
* @ param [ in ] pName descriptive name ; for debugging purposes .
* @ param [ in ] nObjSize object size .
* @ param [ in ] nObjAlign object alignment ; usually 0 for suitable default .
* @ param [ in ] constructor object constructor callback function ; returning 1 for success or 0 for failure .
* @ param [ in ] destructor object destructor callback function .
* @ param [ in ] reclaim reclaim callback function .
* @ param [ in ] pUserArg opaque argument passed to callback functions .
* @ param [ in ] pSource unused argument ( should be null ) .
* @ param [ in ] nFlags flags ( unused ) .
*
* @ return pointer to rtl_cache_type , or NULL upon failure .
*
* @ see rtl_cache_destroy ( )
*/
SAL_DLLPUBLIC 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();
/**
* @ param [ in ] pCache the cache to destroy .
*
* @ see rtl_cache_create ( )
*/
SAL_DLLPUBLIC void SAL_CALL rtl_cache_destroy (
rtl_cache_type * pCache
) SAL_THROW_EXTERN_C();
/**
* @ param [ in ] pCache cache from which object is allocated .
*
* @ return pointer to the allocated object , or NULL upon failure .
*/
SAL_DLLPUBLIC void * SAL_CALL rtl_cache_alloc (
rtl_cache_type * pCache
) SAL_THROW_EXTERN_C();
/**
* @ param [ in ] pCache cache from which object was allocated .
* @ param [ in ] pObj object to free .
*
* @ see rtl_cache_alloc ( )
*/
SAL_DLLPUBLIC void SAL_CALL rtl_cache_free (
rtl_cache_type * pCache,
void * pObj
) SAL_THROW_EXTERN_C();
#ifdef LIBO_INTERNAL_ONLY
/** @cond INTERNAL */
/** rtl_alloc_preInit
*
* This function , is called at the beginning and again
* at the end of LibreOfficeKit pre - initialization to enable
* various optimizations .
*
* Its function is to annotate a section @ start = true
* to end ( @ start = false ) via . two calls . Inside this
* section string allocators are replaced with ones which cause the
* strings to be staticized at the end of the section .
*
* This brings a number of constraints - in particular no
* string allocated outside the section should be freed
* inside it , practically this means starting the section
* as early as possible . No string allocated inside the
* section will be freed subsequently as they are
* staticized .
*
* This method is not thread - safe , nor intended for use in
* a threaded context , cf . previous constraints .
*
* It is almost certainly not the method that you want ,
* use with extraordinary care referring to the
* implementation .
*
* @ since LibreOffice 6 . 1
*/
SAL_DLLPUBLIC void SAL_CALL rtl_alloc_preInit (
sal_Bool start
) SAL_THROW_EXTERN_C();
/** @endcond */
#endif
#ifdef __cplusplus
}
#endif
#endif // INCLUDED_RTL_ALLOC_H
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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