e3c0b6e6ee
This effectively reverts271a663d2f"rtl: support start/stop threads around pre-init" again, now thatdf6ba65046"Remove 'officially dead now' rtl_cache slab allocator mechanism" removed the wsupdate thread. (rtl_alloc_preInit is an internal-use-only C function, so changing its arguments doesn't affect URE compatibility.) Change-Id: Ie9bce86377f9520e2600e4111ac525dddace10f8 Reviewed-on: https://gerrit.libreoffice.org/58443 Tested-by: Jenkins Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
332 lines
9.3 KiB
C
332 lines
9.3 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_RTL_ALLOC_H
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#define INCLUDED_RTL_ALLOC_H
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#include "sal/config.h"
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#include "sal/saldllapi.h"
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#include "sal/types.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** Allocate memory.
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A call to this function will return NULL upon the requested
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memory size being either zero or larger than currently allocatable.
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@param[in] Bytes memory size.
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@return pointer to the allocated memory.
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*/
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SAL_DLLPUBLIC void * SAL_CALL rtl_allocateMemory (
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sal_Size Bytes
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) SAL_THROW_EXTERN_C();
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/** Reallocate memory.
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A call to this function with parameter 'Ptr' being NULL
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is equivalent to a rtl_allocateMemory() call.
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A call to this function with parameter 'Bytes' being 0
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is equivalent to a rtl_freeMemory() call.
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@see rtl_allocateMemory()
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@see rtl_freeMemory()
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@param[in] Ptr pointer to the previously allocated memory.
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@param[in] Bytes new memory size.
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@return pointer to the reallocated memory. May differ from Ptr.
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*/
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SAL_DLLPUBLIC void * SAL_CALL rtl_reallocateMemory (
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void * Ptr,
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sal_Size Bytes
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) SAL_THROW_EXTERN_C();
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/** Free memory.
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@param[in] Ptr pointer to the previously allocated memory.
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@return none. Memory is released. Ptr is invalid.
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*/
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SAL_DLLPUBLIC void SAL_CALL rtl_freeMemory (
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void * Ptr
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) SAL_THROW_EXTERN_C();
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/** Allocate and zero memory.
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A call to this function will return NULL upon the requested
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memory size being either zero or larger than currently allocatable.
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@param[in] Bytes memory size.
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@return pointer to the allocated and zero'ed memory.
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*/
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SAL_DLLPUBLIC void * SAL_CALL rtl_allocateZeroMemory (
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sal_Size Bytes
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) SAL_THROW_EXTERN_C();
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/** Zero memory
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Fills a block of memory with zeros in a way that is guaranteed to be secure
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@param[in] Ptr pointer to the previously allocated memory.
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@param[in] Bytes memory size.
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@since LibreOffice 5.0
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*/
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SAL_DLLPUBLIC void SAL_CALL rtl_secureZeroMemory (
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void * Ptr,
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sal_Size Bytes
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) SAL_THROW_EXTERN_C();
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/** Zero and free memory.
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@param[in] Ptr pointer to the previously allocated memory.
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@param[in] Bytes memory size.
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@return none. Memory is zero'ed with rtl_secureZeroMemory() and released.
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Ptr is invalid.
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*/
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SAL_DLLPUBLIC void SAL_CALL rtl_freeZeroMemory (
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void * Ptr,
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sal_Size Bytes
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) SAL_THROW_EXTERN_C();
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/** Allocate aligned memory.
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A call to this function will return NULL upon the requested
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memory size being either zero or larger than currently allocatable.
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Memory obtained through this function must be freed with
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rtl_freeAlignedMemory().
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@param[in] Alignment alignment in bytes, must be a power of two multiple of
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sizeof(void*).
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@param[in] Bytes memory size.
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@return pointer to the allocated memory.
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@since LibreOffice 4.3
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*/
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SAL_DLLPUBLIC void* SAL_CALL rtl_allocateAlignedMemory (
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sal_Size Alignment,
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sal_Size Bytes
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) SAL_THROW_EXTERN_C();
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/** Free memory allocated with rtl_allocateAlignedMemory().
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@param[in] Ptr pointer to the previously allocated memory.
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@return none. Memory is released. Ptr is invalid.
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@since LibreOffice 4.3
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*/
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SAL_DLLPUBLIC void SAL_CALL rtl_freeAlignedMemory (
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void * Ptr
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) SAL_THROW_EXTERN_C();
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/** Opaque rtl_arena_type.
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*/
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typedef struct SAL_DLLPUBLIC_RTTI rtl_arena_st rtl_arena_type;
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#define RTL_ARENA_NAME_LENGTH 31
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/**
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* @param[in] pName descriptive name; for debugging purposes.
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* @param[in] quantum resource allocation unit / granularity; rounded up to next power of 2.
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* @param[in] quantum_cache_max no longer used, should be 0.
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* @param[in] source_arena passed as argument to source_alloc, source_free; usually NULL.
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* @param[in] source_alloc function to allocate resources; usually rtl_arena_alloc.
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* @param[in] source_free function to free resources; usually rtl_arena_free.
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* @param[in] nFlags flags; usually 0.
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*
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* @return pointer to rtl_arena_type, or NULL upon failure.
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*
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* @see rtl_arena_destroy()
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*/
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SAL_DLLPUBLIC rtl_arena_type * SAL_CALL rtl_arena_create (
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const char * pName,
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sal_Size quantum,
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sal_Size quantum_cache_max,
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rtl_arena_type * source_arena,
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void * (SAL_CALL * source_alloc)(rtl_arena_type *, sal_Size *),
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void (SAL_CALL * source_free) (rtl_arena_type *, void *, sal_Size),
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int nFlags
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) SAL_THROW_EXTERN_C();
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/**
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* @param[in] pArena the arena to destroy.
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* @return None
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*
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* @see rtl_arena_create()
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*/
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SAL_DLLPUBLIC void SAL_CALL rtl_arena_destroy (
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rtl_arena_type * pArena
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) SAL_THROW_EXTERN_C();
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/**
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* @param[in] pArena arena from which resource is allocated.
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* @param[in,out] pBytes size of resource to allocate.
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*
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* @return allocated resource, or NULL upon failure.
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*
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* @see rtl_arena_free()
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*/
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SAL_DLLPUBLIC void * SAL_CALL rtl_arena_alloc (
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rtl_arena_type * pArena,
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sal_Size * pBytes
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) SAL_THROW_EXTERN_C();
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/**
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* @param[in] pArena arena from which resource was allocated.
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* @param[in] pAddr resource to free.
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* @param[in] nBytes size of resource.
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*
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* @return None.
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*
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* @see rtl_arena_alloc()
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*/
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SAL_DLLPUBLIC void SAL_CALL rtl_arena_free (
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rtl_arena_type * pArena,
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void * pAddr,
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sal_Size nBytes
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) SAL_THROW_EXTERN_C();
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/** Opaque rtl_cache_type.
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*/
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typedef struct rtl_cache_st rtl_cache_type;
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#define RTL_CACHE_NAME_LENGTH 31
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#define RTL_CACHE_FLAG_BULKDESTROY 1 /* obsolete */
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/**
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* @param[in] pName descriptive name; for debugging purposes.
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* @param[in] nObjSize object size.
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* @param[in] nObjAlign object alignment; usually 0 for suitable default.
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* @param[in] constructor object constructor callback function; returning 1 for success or 0 for failure.
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* @param[in] destructor object destructor callback function.
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* @param[in] reclaim reclaim callback function.
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* @param[in] pUserArg opaque argument passed to callback functions.
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* @param[in] pSource unused argument (should be null).
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* @param[in] nFlags flags (unused).
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*
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* @return pointer to rtl_cache_type, or NULL upon failure.
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*
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* @see rtl_cache_destroy()
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*/
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SAL_DLLPUBLIC rtl_cache_type * SAL_CALL rtl_cache_create (
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const char * pName,
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sal_Size nObjSize,
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sal_Size nObjAlign,
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int (SAL_CALL * constructor)(void * pObj, void * pUserArg),
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void (SAL_CALL * destructor) (void * pObj, void * pUserArg),
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void (SAL_CALL * reclaim) (void * pUserArg),
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void * pUserArg,
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rtl_arena_type * pSource,
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int nFlags
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) SAL_THROW_EXTERN_C();
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/**
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* @param[in] pCache the cache to destroy.
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*
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* @return None.
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*
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* @see rtl_cache_create()
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*/
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SAL_DLLPUBLIC void SAL_CALL rtl_cache_destroy (
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rtl_cache_type * pCache
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) SAL_THROW_EXTERN_C();
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/**
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* @param[in] pCache cache from which object is allocated.
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*
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* @return pointer to the allocated object, or NULL upon failure.
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*/
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SAL_DLLPUBLIC void * SAL_CALL rtl_cache_alloc (
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rtl_cache_type * pCache
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) SAL_THROW_EXTERN_C();
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/**
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* @param[in] pCache cache from which object was allocated.
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* @param[in] pObj object to free.
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*
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* @return None.
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*
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* @see rtl_cache_alloc()
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*/
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SAL_DLLPUBLIC void SAL_CALL rtl_cache_free (
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rtl_cache_type * pCache,
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void * pObj
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) SAL_THROW_EXTERN_C();
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#ifdef LIBO_INTERNAL_ONLY
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/** @cond INTERNAL */
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/** rtl_alloc_preInit
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*
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* This function, is called at the beginning and again
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* at the end of LibreOfficeKit pre-initialization to enable
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* various optimizations.
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*
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* Its function is to annotate a section @start = true
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* to end (@start = false) via. two calls. Inside this
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* section string allocators are replaced with ones which cause the
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* strings to be staticized at the end of the section.
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*
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* This brings a number of constraints - in particular no
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* string allocated outside the section should be freed
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* inside it, practically this means starting the section
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* as early as possible. No string allocated inside the
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* section will be freed subsequently as they are
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* staticized.
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*
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* This method is not thread-safe, nor intended for use in
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* a threaded context, cf. previous constraints.
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*
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* It is almost certainly not the method that you want,
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* use with extraordinary care referring to the
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* implementation.
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*
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* @since LibreOffice 6.1
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*/
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SAL_DLLPUBLIC void SAL_CALL rtl_alloc_preInit (
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sal_Bool start
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) SAL_THROW_EXTERN_C();
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/** @endcond */
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif // INCLUDED_RTL_ALLOC_H
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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