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comparison vmalloc.c @ 84:bc31d3e070d2

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Graphs fitted to worst case
author Merten Sach <msach@mailbox.tu-berlin.de>
date Wed, 13 Jul 2011 18:07:05 +0200
parents 521c75d64cef
children a214c84dff4e
comparison
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9:56c0a8ace56a 10:9a32e19e74f3
448 // mem and all frees of it must be done in this thread, with the 448 // mem and all frees of it must be done in this thread, with the
449 // thread's original stack available 449 // thread's original stack available
450 freeListHead = malloc( sizeof(MallocProlog) ); 450 freeListHead = malloc( sizeof(MallocProlog) );
451 firstChunk = malloc( MALLOC_ADDITIONAL_MEM_FROM_OS_SIZE ); 451 firstChunk = malloc( MALLOC_ADDITIONAL_MEM_FROM_OS_SIZE );
452 if( firstChunk == NULL ) {printf("malloc error\n"); exit(1);} 452 if( firstChunk == NULL ) {printf("malloc error\n"); exit(1);}
453
454 //Touch memory to avoid page faults
455 //void *ptr,*endPtr;
456 //endPtr = (void*)firstChunk+MALLOC_ADDITIONAL_MEM_FROM_OS_SIZE;
457 //for(ptr = firstChunk; ptr < endPtr; ptr+=PAGE_SIZE)
458 //{
459 // *(char*)ptr = 0;
460 //}
453 461
454 freeListHead->prevChunkInFreeList = NULL; 462 freeListHead->prevChunkInFreeList = NULL;
455 //Use this addr to free the heap when cleanup 463 //Use this addr to free the heap when cleanup
456 freeListHead->nextLowerInMem = firstChunk; 464 freeListHead->nextLowerInMem = firstChunk;
457 //to identify top-of-heap elem, compare this addr to elem's next higher 465 //to identify top-of-heap elem, compare this addr to elem's next higher