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108 lines
3.0 KiB
C
108 lines
3.0 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/**
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* @file
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*
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* @ingroup libcsupport
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*
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* @brief calloc()
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*/
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/*
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* COPYRIGHT (c) 1989-2007.
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* On-Line Applications Research Corporation (OAR).
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#ifdef RTEMS_NEWLIB
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#include "malloc_p.h"
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#include <stdlib.h>
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#include <rtems/chain.h>
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static RTEMS_CHAIN_DEFINE_EMPTY( _Malloc_GC_list );
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RTEMS_INTERRUPT_LOCK_DEFINE( static, _Malloc_GC_lock, "Malloc GC" )
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static void *_Malloc_Get_deferred_free( void )
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{
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rtems_interrupt_lock_context lock_context;
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void *p;
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rtems_interrupt_lock_acquire( &_Malloc_GC_lock, &lock_context );
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p = rtems_chain_get_unprotected( &_Malloc_GC_list );
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rtems_interrupt_lock_release( &_Malloc_GC_lock, &lock_context );
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return p;
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}
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void _Malloc_Process_deferred_frees( void )
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{
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rtems_chain_node *to_be_freed;
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/*
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* If some free's have been deferred, then do them now.
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*/
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while ( ( to_be_freed = _Malloc_Get_deferred_free() ) != NULL ) {
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free( to_be_freed );
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}
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}
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static void _Malloc_Deferred_free( void *p )
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{
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rtems_interrupt_lock_context lock_context;
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rtems_chain_node *node;
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node = (rtems_chain_node *) p;
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rtems_interrupt_lock_acquire( &_Malloc_GC_lock, &lock_context );
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rtems_chain_initialize_node( node );
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rtems_chain_append_unprotected( &_Malloc_GC_list, node );
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rtems_interrupt_lock_release( &_Malloc_GC_lock, &lock_context );
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}
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void free(
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void *ptr
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)
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{
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if ( !ptr )
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return;
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/*
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* Do not attempt to free memory if in a critical section or ISR.
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*/
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if ( _Malloc_System_state() != MALLOC_SYSTEM_STATE_NORMAL ) {
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_Malloc_Deferred_free(ptr);
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return;
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}
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if ( !_Protected_heap_Free( RTEMS_Malloc_Heap, ptr ) ) {
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rtems_fatal( RTEMS_FATAL_SOURCE_INVALID_HEAP_FREE, (rtems_fatal_code) ptr );
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}
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}
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#endif
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