nptl: fix malloc library locking

Update malloc library to use internal uclibc locking primitives
to get the libpthread calls correct.

Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>

libc/stdlib/malloc/heap.h

@@ -16,11 +16,10 @@
 
 /* On multi-threaded systems, the heap includes a lock.  */
 #ifdef __UCLIBC_HAS_THREADS__
-# include <pthread.h>
-# include <bits/uClibc_pthread.h>
+# include <bits/uClibc_mutex.h>
 # define HEAP_USE_LOCKING
-# define __heap_lock(heap_lock) __pthread_mutex_lock (heap_lock)
-# define __heap_unlock(heap_lock) __pthread_mutex_unlock (heap_lock)
+# 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)

libc/stdlib/malloc/malloc.h

@@ -132,13 +132,12 @@ extern int __malloc_mmb_debug;
 /* Locking for multithreaded apps.  */
 #ifdef __UCLIBC_HAS_THREADS__
 
-# include <pthread.h>
-# include <bits/uClibc_pthread.h>
+# include <bits/uClibc_mutex.h>
 
 # define MALLOC_USE_LOCKING
 
-typedef pthread_mutex_t malloc_mutex_t;
-# define MALLOC_MUTEX_INIT	PTHREAD_MUTEX_INITIALIZER
+typedef __UCLIBC_MUTEX_TYPE malloc_mutex_t;
+# define MALLOC_MUTEX_INIT	__UCLIBC_MUTEX_INITIALIZER
 
 # ifdef MALLOC_USE_SBRK
 /* This lock is used to serialize uses of the `sbrk' function (in both
@@ -146,8 +145,8 @@ typedef pthread_mutex_t malloc_mutex_t;
    things will break if these multiple calls are interleaved with another
    thread's use of sbrk!).  */
 extern malloc_mutex_t __malloc_sbrk_lock;
-#  define __malloc_lock_sbrk()	__pthread_mutex_lock (&__malloc_sbrk_lock)
-#  define __malloc_unlock_sbrk() __pthread_mutex_unlock (&__malloc_sbrk_lock)
+#  define __malloc_lock_sbrk()	__UCLIBC_MUTEX_LOCK_CANCEL_UNSAFE (__malloc_sbrk_lock)
+#  define __malloc_unlock_sbrk() __UCLIBC_MUTEX_UNLOCK_CANCEL_UNSAFE (__malloc_sbrk_lock)
 # endif /* MALLOC_USE_SBRK */
 
 #else /* !__UCLIBC_HAS_THREADS__ */