diff options
Diffstat (limited to 'sysdeps/generic/malloc-machine.h')
| -rw-r--r-- | sysdeps/generic/malloc-machine.h | 22 |
1 files changed, 2 insertions, 20 deletions
diff --git a/sysdeps/generic/malloc-machine.h b/sysdeps/generic/malloc-machine.h index 1ed2d50a20..68ca3c7bc4 100644 --- a/sysdeps/generic/malloc-machine.h +++ b/sysdeps/generic/malloc-machine.h @@ -1,6 +1,6 @@ /* Basic platform-independent macro definitions for mutexes, thread-specific data and parameters for malloc. - Copyright (C) 2003-2016 Free Software Foundation, Inc. + Copyright (C) 2003-2018 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -21,25 +21,7 @@ #define _GENERIC_MALLOC_MACHINE_H #include <atomic.h> - -#ifndef mutex_init /* No threads, provide dummy macros */ - -# define NO_THREADS - -/* The mutex functions used to do absolutely nothing, i.e. lock, - trylock and unlock would always just return 0. However, even - without any concurrently active threads, a mutex can be used - legitimately as an `in use' flag. To make the code that is - protected by a mutex async-signal safe, these macros would have to - be based on atomic test-and-set operations, for example. */ -typedef int mutex_t; - -# define mutex_init(m) (*(m) = 0) -# define mutex_lock(m) ({ *(m) = 1; 0; }) -# define mutex_trylock(m) (*(m) ? 1 : ((*(m) = 1), 0)) -# define mutex_unlock(m) (*(m) = 0) - -#endif /* !defined mutex_init */ +#include <malloc-alignment.h> #ifndef atomic_full_barrier # define atomic_full_barrier() __asm ("" ::: "memory") |