forked from Imagelibrary/rtems
23fec9f0e1
Use allocator mutex for objects allocate/free. This prevents that the thread dispatch latency depends on the workspace/heap fragmentation.
81 lines
2.1 KiB
C
81 lines
2.1 KiB
C
/**
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* @file
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*
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* @brief Shrink an Object Class Information Record
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* @ingroup ScoreCPU
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*/
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/*
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* COPYRIGHT (c) 1989-1999.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#if HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <rtems/score/objectimpl.h>
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#include <rtems/score/assert.h>
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#include <rtems/score/chainimpl.h>
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#include <rtems/score/wkspace.h>
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void _Objects_Shrink_information(
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Objects_Information *information
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)
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{
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uint32_t block_count;
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uint32_t block;
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uint32_t index_base;
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_Assert( _Debug_Is_owner_of_allocator() );
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/*
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* Search the list to find block or chunk with all objects inactive.
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*/
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index_base = _Objects_Get_index( information->minimum_id );
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block_count = (information->maximum - index_base) /
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information->allocation_size;
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for ( block = 0; block < block_count; block++ ) {
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if ( information->inactive_per_block[ block ] ==
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information->allocation_size ) {
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Chain_Node *node = _Chain_First( &information->Inactive );
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const Chain_Node *tail = _Chain_Immutable_tail( &information->Inactive );
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uint32_t index_end = index_base + information->allocation_size;
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while ( node != tail ) {
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Objects_Control *object = (Objects_Control *) node;
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uint32_t index = _Objects_Get_index( object->id );
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/*
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* Get the next node before the node is extracted
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*/
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node = _Chain_Next( node );
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if ( index >= index_base && index < index_end ) {
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_Chain_Extract_unprotected( &object->Node );
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}
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}
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/*
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* Free the memory and reset the structures in the object' information
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*/
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_Workspace_Free( information->object_blocks[ block ] );
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information->object_blocks[ block ] = NULL;
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information->inactive_per_block[ block ] = 0;
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information->inactive -= information->allocation_size;
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return;
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}
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index_base += information->allocation_size;
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}
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}
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