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Diffstat (limited to 'libc/stdlib/malloc/heap.h')
-rw-r--r--libc/stdlib/malloc/heap.h40
1 files changed, 10 insertions, 30 deletions
diff --git a/libc/stdlib/malloc/heap.h b/libc/stdlib/malloc/heap.h
index 2f06ab17c..11bd49ffe 100644
--- a/libc/stdlib/malloc/heap.h
+++ b/libc/stdlib/malloc/heap.h
@@ -13,18 +13,13 @@
#include <features.h>
-
-/* On multi-threaded systems, the heap includes a lock. */
+#include <bits/uClibc_mutex.h>
#ifdef __UCLIBC_HAS_THREADS__
-# include <bits/uClibc_mutex.h>
# define HEAP_USE_LOCKING
-# define __heap_lock(heap_lock) __UCLIBC_MUTEX_LOCK_CANCEL_UNSAFE(*(heap_lock))
-# define __heap_unlock(heap_lock) __UCLIBC_MUTEX_UNLOCK_CANCEL_UNSAFE(*(heap_lock))
-#else
-# define __heap_lock(heap_lock)
-# define __heap_unlock(heap_lock)
#endif
+#define __heap_lock(heap_lock) __UCLIBC_MUTEX_LOCK_CANCEL_UNSAFE(*(heap_lock))
+#define __heap_unlock(heap_lock) __UCLIBC_MUTEX_UNLOCK_CANCEL_UNSAFE(*(heap_lock))
/* The heap allocates in multiples of, and aligned to, HEAP_GRANULARITY.
HEAP_GRANULARITY must be a power of 2. Malloc depends on this being the
@@ -35,11 +30,9 @@
-/* The HEAP_INIT macro can be used as a static initializer for a heap
- variable. The HEAP_INIT_WITH_FA variant is used to initialize a heap
+/* The HEAP_INIT_WITH_FA variant is used to initialize a heap
with an initial static free-area; its argument FA should be declared
using HEAP_DECLARE_STATIC_FREE_AREA. */
-# define HEAP_INIT 0
# define HEAP_INIT_WITH_FA(fa) &fa._fa
/* A free-list area `header'. These are actually stored at the _ends_ of
@@ -92,34 +85,21 @@ struct heap_free_area
#define HEAP_MIN_FREE_AREA_SIZE \
HEAP_ADJUST_SIZE (sizeof (struct heap_free_area) + 32)
-
-/* branch-prediction macros; they may already be defined by libc. */
-#ifndef likely
-#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96)
-#define likely(cond) __builtin_expect(!!(int)(cond), 1)
-#define unlikely(cond) __builtin_expect((int)(cond), 0)
-#else
-#define likely(cond) (cond)
-#define unlikely(cond) (cond)
-#endif
-#endif /* !likely */
-
-
/* Define HEAP_DEBUGGING to cause the heap routines to emit debugging info
to stderr when the variable __heap_debug is set to true. */
#ifdef HEAP_DEBUGGING
-extern int __heap_debug;
+extern int __heap_debug attribute_hidden;
#define HEAP_DEBUG(heap, str) (__heap_debug ? __heap_dump (heap, str) : 0)
#else
#define HEAP_DEBUG(heap, str) (void)0
#endif
/* Output a text representation of HEAP to stderr, labelling it with STR. */
-extern void __heap_dump (struct heap_free_area *heap, const char *str);
+extern void __heap_dump (struct heap_free_area *heap, const char *str) attribute_hidden;
/* Do some consistency checks on HEAP. If they fail, output an error
message to stderr, and exit. STR is printed with the failure message. */
-extern void __heap_check (struct heap_free_area *heap, const char *str);
+extern void __heap_check (struct heap_free_area *heap, const char *str) attribute_hidden;
/* Delete the free-area FA from HEAP. */
@@ -216,16 +196,16 @@ __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) attribute_hidden;
/* 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) attribute_hidden;
/* 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,
- void *mem, size_t size);
+ void *mem, size_t size) attribute_hidden;
/* Return true if HEAP contains absolutely no memory. */
#define __heap_is_empty(heap) (! (heap))