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-rw-r--r--libc/stdlib/malloc/free.c41
-rw-r--r--libc/stdlib/malloc/heap.h30
-rw-r--r--libc/stdlib/malloc/heap_alloc.c8
-rw-r--r--libc/stdlib/malloc/heap_alloc_at.c8
-rw-r--r--libc/stdlib/malloc/heap_free.c8
-rw-r--r--libc/stdlib/malloc/malloc.c33
-rw-r--r--libc/stdlib/malloc/memalign.c2
-rw-r--r--libc/stdlib/malloc/realloc.c12
8 files changed, 68 insertions, 74 deletions
diff --git a/libc/stdlib/malloc/free.c b/libc/stdlib/malloc/free.c
index 4713b0624..91552919e 100644
--- a/libc/stdlib/malloc/free.c
+++ b/libc/stdlib/malloc/free.c
@@ -21,12 +21,18 @@ libc_hidden_proto(sbrk)
#include "malloc.h"
#include "heap.h"
-static void
#ifdef HEAP_USE_LOCKING
-free_to_heap (void *mem, struct heap_free_area *heap, malloc_mutex_t *heap_lock)
+#define free_to_heap(mem, heap, lck) __free_to_heap(mem, heap, lck)
#else
-free_to_heap (void *mem, struct heap_free_area *heap)
+#define free_to_heap(mem, heap, lck) __free_to_heap(mem, heap)
+#endif
+
+static void
+__free_to_heap (void *mem, struct heap_free_area **heap
+#ifdef HEAP_USE_LOCKING
+ , malloc_mutex_t *heap_lock
#endif
+ )
{
size_t size;
struct heap_free_area *fa;
@@ -43,7 +49,7 @@ free_to_heap (void *mem, struct heap_free_area *heap)
size = MALLOC_SIZE (mem);
mem = MALLOC_BASE (mem);
- __heap_do_lock (heap_lock);
+ __heap_lock (heap_lock);
/* Put MEM back in the heap, and get the free-area it was placed in. */
fa = __heap_free (heap, mem, size);
@@ -52,7 +58,7 @@ free_to_heap (void *mem, struct heap_free_area *heap)
unmapped. */
if (HEAP_FREE_AREA_SIZE (fa) < MALLOC_UNMAP_THRESHOLD)
/* Nope, nothing left to do, just release the lock. */
- __heap_do_unlock (heap_lock);
+ __heap_unlock (heap_lock);
else
/* Yup, try to unmap FA. */
{
@@ -85,7 +91,7 @@ free_to_heap (void *mem, struct heap_free_area *heap)
MALLOC_DEBUG (-1, "not unmapping: 0x%lx - 0x%lx (%ld bytes)",
start, end, end - start);
__malloc_unlock_sbrk ();
- __heap_do_unlock (heap_lock);
+ __heap_unlock (heap_lock);
return;
}
#endif
@@ -102,7 +108,7 @@ free_to_heap (void *mem, struct heap_free_area *heap)
another free area, even if it's smaller than
MALLOC_MIN_SIZE, will cause us not to reserve anything. */
{
- /* Put the reserved memory back in the heap; we asssume that
+ /* Put the reserved memory back in the heap; we assume that
MALLOC_UNMAP_THRESHOLD is greater than MALLOC_MIN_SIZE, so
we use the latter unconditionally here. */
__heap_free (heap, (void *)start, MALLOC_MIN_SIZE);
@@ -112,7 +118,7 @@ free_to_heap (void *mem, struct heap_free_area *heap)
#ifdef MALLOC_USE_SBRK
/* Release the heap lock; we're still holding the sbrk lock. */
- __heap_do_unlock (heap_lock);
+ __heap_unlock (heap_lock);
/* Lower the brk. */
sbrk (start - end);
/* Release the sbrk lock too; now we hold no locks. */
@@ -176,20 +182,15 @@ free_to_heap (void *mem, struct heap_free_area *heap)
/* We have to unlock the heap before we recurse to free the mmb
descriptor, because we might be unmapping from the mmb
heap. */
- __heap_do_unlock (heap_lock);
+ __heap_unlock (heap_lock);
-#ifdef HEAP_USE_LOCKING
/* Release the descriptor block we used. */
free_to_heap (mmb, &__malloc_mmb_heap, &__malloc_mmb_heap_lock);
-#else
- /* Release the descriptor block we used. */
- free_to_heap (mmb, &__malloc_mmb_heap);
-#endif
/* Do the actual munmap. */
munmap ((void *)mmb_start, mmb_end - mmb_start);
- __heap_do_lock (heap_lock);
+ __heap_lock (heap_lock);
# ifdef __UCLIBC_HAS_THREADS__
/* In a multi-threaded program, it's possible that PREV_MMB has
@@ -222,7 +223,7 @@ free_to_heap (void *mem, struct heap_free_area *heap)
}
/* Finally release the lock for good. */
- __heap_do_unlock (heap_lock);
+ __heap_unlock (heap_lock);
MALLOC_MMB_DEBUG_INDENT (-1);
@@ -252,7 +253,7 @@ free_to_heap (void *mem, struct heap_free_area *heap)
}
/* Release the heap lock before we do the system call. */
- __heap_do_unlock (heap_lock);
+ __heap_unlock (heap_lock);
if (unmap_end > unmap_start)
/* Finally, actually unmap the memory. */
@@ -269,9 +270,5 @@ free_to_heap (void *mem, struct heap_free_area *heap)
void
free (void *mem)
{
-#ifdef HEAP_USE_LOCKING
- free_to_heap (mem, __malloc_heap, &__malloc_heap_lock);
-#else
- free_to_heap (mem, __malloc_heap);
-#endif
+ free_to_heap (mem, &__malloc_heap, &__malloc_heap_lock);
}
diff --git a/libc/stdlib/malloc/heap.h b/libc/stdlib/malloc/heap.h
index 2a686b601..c0c5df821 100644
--- a/libc/stdlib/malloc/heap.h
+++ b/libc/stdlib/malloc/heap.h
@@ -19,11 +19,11 @@
# include <pthread.h>
# include <bits/uClibc_pthread.h>
# define HEAP_USE_LOCKING
-# define __heap_do_lock(heap_lock) __pthread_mutex_lock (heap_lock)
-# define __heap_do_unlock(heap_lock) __pthread_mutex_unlock (heap_lock)
+# define __heap_lock(heap_lock) __pthread_mutex_lock (heap_lock)
+# define __heap_unlock(heap_lock) __pthread_mutex_unlock (heap_lock)
#else
-# define __heap_do_lock(heap_lock)
-# define __heap_do_unlock(heap_lock)
+# define __heap_lock(heap_lock)
+# define __heap_unlock(heap_lock)
#endif
@@ -123,14 +123,14 @@ extern void __heap_check (struct heap_free_area *heap, const char *str);
/* Delete the free-area FA from HEAP. */
static __inline__ void
-__heap_delete (struct heap_free_area *heap, struct heap_free_area *fa)
+__heap_delete (struct heap_free_area **heap, struct heap_free_area *fa)
{
if (fa->next)
fa->next->prev = fa->prev;
if (fa->prev)
fa->prev->next = fa->next;
else
- heap = fa->next;
+ *heap = fa->next;
}
@@ -138,7 +138,7 @@ __heap_delete (struct heap_free_area *heap, struct heap_free_area *fa)
HEAP. PREV and NEXT may be 0; if PREV is 0, FA is installed as the
first free-area. */
static __inline__ void
-__heap_link_free_area (struct heap_free_area *heap, struct heap_free_area *fa,
+__heap_link_free_area (struct heap_free_area **heap, struct heap_free_area *fa,
struct heap_free_area *prev,
struct heap_free_area *next)
{
@@ -148,7 +148,7 @@ __heap_link_free_area (struct heap_free_area *heap, struct heap_free_area *fa,
if (prev)
prev->next = fa;
else
- heap = fa;
+ *heap = fa;
if (next)
next->prev = fa;
}
@@ -157,14 +157,14 @@ __heap_link_free_area (struct heap_free_area *heap, struct heap_free_area *fa,
PREV may be 0, in which case FA is installed as the first free-area (but
FA may not be 0). */
static __inline__ void
-__heap_link_free_area_after (struct heap_free_area *heap,
+__heap_link_free_area_after (struct heap_free_area **heap,
struct heap_free_area *fa,
struct heap_free_area *prev)
{
if (prev)
prev->next = fa;
else
- heap = fa;
+ *heap = fa;
fa->prev = prev;
}
@@ -173,7 +173,7 @@ __heap_link_free_area_after (struct heap_free_area *heap,
PREV and NEXT may be 0; if PREV is 0, MEM is installed as the first
free-area. */
static __inline__ struct heap_free_area *
-__heap_add_free_area (struct heap_free_area *heap, void *mem, size_t size,
+__heap_add_free_area (struct heap_free_area **heap, void *mem, size_t size,
struct heap_free_area *prev,
struct heap_free_area *next)
{
@@ -191,7 +191,7 @@ __heap_add_free_area (struct heap_free_area *heap, void *mem, size_t size,
/* Allocate SIZE bytes from the front of the free-area FA in HEAP, and
return the amount actually allocated (which may be more than SIZE). */
static __inline__ size_t
-__heap_free_area_alloc (struct heap_free_area *heap,
+__heap_free_area_alloc (struct heap_free_area **heap,
struct heap_free_area *fa, size_t size)
{
size_t fa_size = fa->size;
@@ -215,15 +215,15 @@ __heap_free_area_alloc (struct heap_free_area *heap,
/* Allocate and return a block at least *SIZE bytes long from HEAP.
*SIZE is adjusted to reflect the actual amount allocated (which may be
greater than requested). */
-extern void *__heap_alloc (struct heap_free_area *heap, size_t *size);
+extern void *__heap_alloc (struct heap_free_area **heap, size_t *size);
/* Allocate SIZE bytes at address MEM in HEAP. Return the actual size
allocated, or 0 if we failed. */
-extern size_t __heap_alloc_at (struct heap_free_area *heap, void *mem, size_t size);
+extern size_t __heap_alloc_at (struct heap_free_area **heap, void *mem, size_t size);
/* Return the memory area MEM of size SIZE to HEAP.
Returns the heap free area into which the memory was placed. */
-extern struct heap_free_area *__heap_free (struct heap_free_area *heap,
+extern struct heap_free_area *__heap_free (struct heap_free_area **heap,
void *mem, size_t size);
/* Return true if HEAP contains absolutely no memory. */
diff --git a/libc/stdlib/malloc/heap_alloc.c b/libc/stdlib/malloc/heap_alloc.c
index cd52038d3..77b7d8560 100644
--- a/libc/stdlib/malloc/heap_alloc.c
+++ b/libc/stdlib/malloc/heap_alloc.c
@@ -20,7 +20,7 @@
*SIZE is adjusted to reflect the actual amount allocated (which may be
greater than requested). */
void *
-__heap_alloc (struct heap_free_area *heap, size_t *size)
+__heap_alloc (struct heap_free_area **heap, size_t *size)
{
struct heap_free_area *fa;
size_t _size = *size;
@@ -33,10 +33,10 @@ __heap_alloc (struct heap_free_area *heap, size_t *size)
we must make sure that every allocated block can hold one. */
_size = HEAP_ADJUST_SIZE (sizeof (struct heap_free_area));
- HEAP_DEBUG (heap, "before __heap_alloc");
+ HEAP_DEBUG (*heap, "before __heap_alloc");
/* Look for a free area that can contain _SIZE bytes. */
- for (fa = heap; fa; fa = fa->next)
+ for (fa = *heap; fa; fa = fa->next)
if (fa->size >= _size)
{
/* Found one! */
@@ -45,7 +45,7 @@ __heap_alloc (struct heap_free_area *heap, size_t *size)
break;
}
- HEAP_DEBUG (heap, "after __heap_alloc");
+ HEAP_DEBUG (*heap, "after __heap_alloc");
return mem;
}
diff --git a/libc/stdlib/malloc/heap_alloc_at.c b/libc/stdlib/malloc/heap_alloc_at.c
index 4c071b9ef..45d68598a 100644
--- a/libc/stdlib/malloc/heap_alloc_at.c
+++ b/libc/stdlib/malloc/heap_alloc_at.c
@@ -19,17 +19,17 @@
/* Allocate SIZE bytes at address MEM in HEAP. Return the actual size
allocated, or 0 if we failed. */
size_t
-__heap_alloc_at (struct heap_free_area *heap, void *mem, size_t size)
+__heap_alloc_at (struct heap_free_area **heap, void *mem, size_t size)
{
struct heap_free_area *fa;
size_t alloced = 0;
size = HEAP_ADJUST_SIZE (size);
- HEAP_DEBUG (heap, "before __heap_alloc_at");
+ HEAP_DEBUG (*heap, "before __heap_alloc_at");
/* Look for a free area that can contain SIZE bytes. */
- for (fa = heap; fa; fa = fa->next)
+ for (fa = *heap; fa; fa = fa->next)
{
void *fa_mem = HEAP_FREE_AREA_START (fa);
if (fa_mem <= mem)
@@ -41,7 +41,7 @@ __heap_alloc_at (struct heap_free_area *heap, void *mem, size_t size)
}
}
- HEAP_DEBUG (heap, "after __heap_alloc_at");
+ HEAP_DEBUG (*heap, "after __heap_alloc_at");
return alloced;
}
diff --git a/libc/stdlib/malloc/heap_free.c b/libc/stdlib/malloc/heap_free.c
index 3326bc691..15343c05a 100644
--- a/libc/stdlib/malloc/heap_free.c
+++ b/libc/stdlib/malloc/heap_free.c
@@ -18,12 +18,12 @@
/* Return the block of memory at MEM, of size SIZE, to HEAP. */
struct heap_free_area *
-__heap_free (struct heap_free_area *heap, void *mem, size_t size)
+__heap_free (struct heap_free_area **heap, void *mem, size_t size)
{
struct heap_free_area *fa, *prev_fa;
void *end = (char *)mem + size;
- HEAP_DEBUG (heap, "before __heap_free");
+ HEAP_DEBUG (*heap, "before __heap_free");
/* Find the right position in the free-list entry to place the new block.
This is the most speed critical loop in this malloc implementation:
@@ -32,7 +32,7 @@ __heap_free (struct heap_free_area *heap, void *mem, size_t size)
in the free-list when it becomes fragmented and long. [A better
implemention would use a balanced tree or something for the free-list,
though that bloats the code-size and complexity quite a bit.] */
- for (prev_fa = 0, fa = heap; fa; prev_fa = fa, fa = fa->next)
+ for (prev_fa = 0, fa = *heap; fa; prev_fa = fa, fa = fa->next)
if (unlikely (HEAP_FREE_AREA_END (fa) >= mem))
break;
@@ -83,7 +83,7 @@ __heap_free (struct heap_free_area *heap, void *mem, size_t size)
/* Make the new block into a separate free-list entry. */
fa = __heap_add_free_area (heap, mem, size, prev_fa, fa);
- HEAP_DEBUG (heap, "after __heap_free");
+ HEAP_DEBUG (*heap, "after __heap_free");
return fa;
}
diff --git a/libc/stdlib/malloc/malloc.c b/libc/stdlib/malloc/malloc.c
index d58d62d2d..af55cd328 100644
--- a/libc/stdlib/malloc/malloc.c
+++ b/libc/stdlib/malloc/malloc.c
@@ -53,12 +53,17 @@ malloc_mutex_t __malloc_mmb_heap_lock = PTHREAD_MUTEX_INITIALIZER;
#endif /* __UCLIBC_UCLINUX_BROKEN_MUNMAP__ */
-static void *
#ifdef HEAP_USE_LOCKING
-malloc_from_heap (size_t size, struct heap_free_area *heap, malloc_mutex_t *heap_lock)
+#define malloc_from_heap(size, heap, lck) __malloc_from_heap(size, heap, lck)
#else
-malloc_from_heap (size_t size, struct heap_free_area *heap)
+#define malloc_from_heap(size, heap, lck) __malloc_from_heap(size, heap)
#endif
+static void *
+__malloc_from_heap (size_t size, struct heap_free_area **heap
+#ifdef HEAP_USE_LOCKING
+ , malloc_mutex_t *heap_lock
+#endif
+ )
{
void *mem;
@@ -67,12 +72,12 @@ malloc_from_heap (size_t size, struct heap_free_area *heap)
/* Include extra space to record the size of the allocated block. */
size += MALLOC_HEADER_SIZE;
- __heap_do_lock (heap_lock);
+ __heap_lock (heap_lock);
/* First try to get memory that's already in our heap. */
mem = __heap_alloc (heap, &size);
- __heap_do_unlock (heap_lock);
+ __heap_unlock (heap_lock);
if (unlikely (! mem))
/* We couldn't allocate from the heap, so grab some more
@@ -132,11 +137,11 @@ malloc_from_heap (size_t size, struct heap_free_area *heap)
struct malloc_mmb *mmb, *prev_mmb, *new_mmb;
#endif
- MALLOC_DEBUG (1, "adding system memroy to heap: 0x%lx - 0x%lx (%d bytes)",
+ MALLOC_DEBUG (1, "adding system memory to heap: 0x%lx - 0x%lx (%d bytes)",
(long)block, (long)block + block_size, block_size);
/* Get back the heap lock. */
- __heap_do_lock (heap_lock);
+ __heap_lock (heap_lock);
/* Put BLOCK into the heap. */
__heap_free (heap, block, block_size);
@@ -146,7 +151,7 @@ malloc_from_heap (size_t size, struct heap_free_area *heap)
/* Try again to allocate. */
mem = __heap_alloc (heap, &size);
- __heap_do_unlock (heap_lock);
+ __heap_unlock (heap_lock);
#if !defined(MALLOC_USE_SBRK) && defined(__UCLIBC_UCLINUX_BROKEN_MUNMAP__)
/* Insert a record of BLOCK in sorted order into the
@@ -158,11 +163,7 @@ malloc_from_heap (size_t size, struct heap_free_area *heap)
if (block < mmb->mem)
break;
-#ifdef HEAP_USE_LOCKING
- new_mmb = malloc_from_heap (sizeof *new_mmb, __malloc_mmb_heap, &__malloc_mmb_heap_lock);
-#else
- new_mmb = malloc_from_heap (sizeof *new_mmb, __malloc_mmb_heap);
-#endif
+ new_mmb = malloc_from_heap (sizeof *new_mmb, &__malloc_mmb_heap, &__malloc_mmb_heap_lock);
new_mmb->next = mmb;
new_mmb->mem = block;
new_mmb->size = block_size;
@@ -221,11 +222,7 @@ malloc (size_t size)
if (unlikely(((unsigned long)size > (unsigned long)(MALLOC_HEADER_SIZE*-2))))
goto oom;
-#ifdef HEAP_USE_LOCKING
- mem = malloc_from_heap (size, __malloc_heap, &__malloc_heap_lock);
-#else
- mem = malloc_from_heap (size, __malloc_heap);
-#endif
+ mem = malloc_from_heap (size, &__malloc_heap, &__malloc_heap_lock);
if (unlikely (!mem))
{
oom:
diff --git a/libc/stdlib/malloc/memalign.c b/libc/stdlib/malloc/memalign.c
index 114299b43..6826d623a 100644
--- a/libc/stdlib/malloc/memalign.c
+++ b/libc/stdlib/malloc/memalign.c
@@ -36,7 +36,7 @@ memalign (size_t alignment, size_t size)
{
void *mem, *base;
unsigned long tot_addr, tot_end_addr, addr, end_addr;
- struct heap_free_area *heap = __malloc_heap;
+ struct heap_free_area **heap = &__malloc_heap;
/* Make SIZE something we like. */
size = HEAP_ADJUST_SIZE (size);
diff --git a/libc/stdlib/malloc/realloc.c b/libc/stdlib/malloc/realloc.c
index f12123aa9..a8271995b 100644
--- a/libc/stdlib/malloc/realloc.c
+++ b/libc/stdlib/malloc/realloc.c
@@ -59,9 +59,9 @@ realloc (void *mem, size_t new_size)
{
size_t extra = new_size - size;
- __heap_do_lock (&__malloc_heap_lock);
- extra = __heap_alloc_at (__malloc_heap, base_mem + size, extra);
- __heap_do_unlock (&__malloc_heap_lock);
+ __heap_lock (&__malloc_heap_lock);
+ extra = __heap_alloc_at (&__malloc_heap, base_mem + size, extra);
+ __heap_unlock (&__malloc_heap_lock);
if (extra)
/* Record the changed size. */
@@ -82,9 +82,9 @@ realloc (void *mem, size_t new_size)
else if (new_size + MALLOC_REALLOC_MIN_FREE_SIZE <= size)
/* Shrink the block. */
{
- __heap_do_lock (&__malloc_heap_lock);
- __heap_free (__malloc_heap, base_mem + new_size, size - new_size);
- __heap_do_unlock (&__malloc_heap_lock);
+ __heap_lock (&__malloc_heap_lock);
+ __heap_free (&__malloc_heap, base_mem + new_size, size - new_size);
+ __heap_unlock (&__malloc_heap_lock);
MALLOC_SET_SIZE (base_mem, new_size);
}