From 2b3e9d9b244e279ef5693a7cf5dacc7903164af5 Mon Sep 17 00:00:00 2001 From: Ralf Corsepius Date: Mon, 22 Jul 2002 09:46:48 +0000 Subject: Remove, moved to cpukit. --- c/src/exec/score/src/heapallocate.c | 114 ------------------------------------ 1 file changed, 114 deletions(-) delete mode 100644 c/src/exec/score/src/heapallocate.c (limited to 'c/src/exec/score/src/heapallocate.c') diff --git a/c/src/exec/score/src/heapallocate.c b/c/src/exec/score/src/heapallocate.c deleted file mode 100644 index 3699a6b080..0000000000 --- a/c/src/exec/score/src/heapallocate.c +++ /dev/null @@ -1,114 +0,0 @@ -/* - * Heap Handler - * - * COPYRIGHT (c) 1989-1999. - * On-Line Applications Research Corporation (OAR). - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.OARcorp.com/rtems/license.html. - * - * $Id$ - */ - - -#include -#include -#include - -/*PAGE - * - * _Heap_Allocate - * - * This kernel routine allocates the requested size of memory - * from the specified heap. - * - * Input parameters: - * the_heap - pointer to heap header. - * size - size in bytes of the memory block to allocate. - * - * Output parameters: - * returns - starting address of memory block allocated - */ - -void *_Heap_Allocate( - Heap_Control *the_heap, - unsigned32 size -) -{ - unsigned32 excess; - unsigned32 the_size; - Heap_Block *the_block; - Heap_Block *next_block; - Heap_Block *temporary_block; - void *ptr; - unsigned32 offset; - - /* - * Catch the case of a user allocating close to the limit of the - * unsigned32. - */ - - if ( size >= (-1 - HEAP_BLOCK_USED_OVERHEAD) ) - return( NULL ); - - excess = size % the_heap->page_size; - the_size = size + the_heap->page_size + HEAP_BLOCK_USED_OVERHEAD; - - if ( excess ) - the_size += the_heap->page_size - excess; - - if ( the_size < sizeof( Heap_Block ) ) - the_size = sizeof( Heap_Block ); - - for ( the_block = the_heap->first; - ; - the_block = the_block->next ) { - if ( the_block == _Heap_Tail( the_heap ) ) - return( NULL ); - if ( the_block->front_flag >= the_size ) - break; - } - - if ( (the_block->front_flag - the_size) > - (the_heap->page_size + HEAP_BLOCK_USED_OVERHEAD) ) { - the_block->front_flag -= the_size; - next_block = _Heap_Next_block( the_block ); - next_block->back_flag = the_block->front_flag; - - temporary_block = _Heap_Block_at( next_block, the_size ); - temporary_block->back_flag = - next_block->front_flag = _Heap_Build_flag( the_size, - HEAP_BLOCK_USED ); - ptr = _Heap_Start_of_user_area( next_block ); - } else { - next_block = _Heap_Next_block( the_block ); - next_block->back_flag = _Heap_Build_flag( the_block->front_flag, - HEAP_BLOCK_USED ); - the_block->front_flag = next_block->back_flag; - the_block->next->previous = the_block->previous; - the_block->previous->next = the_block->next; - ptr = _Heap_Start_of_user_area( the_block ); - } - - /* - * round ptr up to a multiple of page size - * Have to save the bump amount in the buffer so that free can figure it out - */ - - offset = the_heap->page_size - (((unsigned32) ptr) & (the_heap->page_size - 1)); - ptr = _Addresses_Add_offset( ptr, offset ); - *(((unsigned32 *) ptr) - 1) = offset; - -#ifdef RTEMS_DEBUG - { - unsigned32 ptr_u32; - ptr_u32 = (unsigned32) ptr; - if (ptr_u32 & (the_heap->page_size - 1)) - abort(); - } -#endif - - return ptr; -} - -- cgit v1.2.3