Rework malloc. The new default implementation is based on dlmalloc from Doug

Lea.  It is about 2x faster than the old malloc-930716, and behave itself much
better -- it will properly release memory back to the system, and it uses a
combination of brk() for small allocations and mmap() for larger allocations.
 -Erik

1 files changed, 0 insertions, 67 deletions

diff --git a/libc/stdlib/malloc-930716/memalign.c b/libc/stdlib/malloc-930716/memalign.c
deleted file mode 100644
index b89165452..000000000
--- a/libc/stdlib/malloc-930716/memalign.c
+++ /dev/null
@@ -1,67 +0,0 @@
-/* malloc.c - C standard library routine.
-   Copyright (c) 1989, 1993  Michael J. Haertel
-   You may redistribute this library under the terms of the
-   GNU Library General Public License (version 2 or any later
-   version) as published by the Free Software Foundation.
-   THIS SOFTWARE IS PROVIDED "AS IS" WITHOUT ANY EXPRESS OR IMPLIED
-   WARRANTY.  IN PARTICULAR, THE AUTHOR MAKES NO REPRESENTATION OR
-   WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY OF THIS
-   SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE. */
-
-#define _GNU_SOURCE
-#include <features.h>
-#include <limits.h>
-#include <stddef.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include "malloc.h"
-
-#ifdef __UCLIBC_HAS_THREADS__
-#include <pthread.h>
-extern pthread_mutex_t __malloclock;
-# define LOCK	__pthread_mutex_lock(&__malloclock)
-# define UNLOCK	__pthread_mutex_unlock(&__malloclock);
-#else
-# define LOCK
-# define UNLOCK
-#endif
-
-
-__ptr_t memalign (size_t alignment, size_t size)
-{
-    __ptr_t result;
-    unsigned long int adj;
-
-    result = malloc (size + alignment - 1);
-    if (result == NULL)
-	return NULL;
-    adj = (unsigned long int) ((unsigned long int) ((char *) result -
-		(char *) NULL)) % alignment;
-    if (adj != 0)
-    {
-	struct alignlist *l;
-	LOCK;
-	for (l = _aligned_blocks; l != NULL; l = l->next)
-	    if (l->aligned == NULL)
-		/* This slot is free.  Use it.  */
-		break;
-	if (l == NULL)
-	{
-	    l = (struct alignlist *) malloc (sizeof (struct alignlist));
-	    if (l == NULL) {
-		__free_unlocked (result);
-		UNLOCK;
-		return NULL;
-	    }
-	    l->next = _aligned_blocks;
-	    _aligned_blocks = l;
-	}
-	l->exact = result;
-	result = l->aligned = (char *) result + alignment - adj;
-	UNLOCK;
-    }
-
-    return result;
-}
-