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authorAustin Foxley <austinf@cetoncorp.com>2009-10-17 13:37:52 -0700
committerAustin Foxley <austinf@cetoncorp.com>2009-10-17 13:37:52 -0700
commitcfbc0081078b5a41895a2ad689627bf94eeacb43 (patch)
tree4720fff6ae1a79ffe953ee8689a2bd3f8ce016a0 /libc/sysdeps/linux/common
parentc94314fa618c682646c07ddd914a5abb77346273 (diff)
rework internal uClibc mutexes to support futex locking, and nptl
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
Diffstat (limited to 'libc/sysdeps/linux/common')
-rw-r--r--libc/sysdeps/linux/common/bits/uClibc_mutex.h68
-rw-r--r--libc/sysdeps/linux/common/bits/uClibc_stdio.h28
2 files changed, 84 insertions, 12 deletions
diff --git a/libc/sysdeps/linux/common/bits/uClibc_mutex.h b/libc/sysdeps/linux/common/bits/uClibc_mutex.h
index 14aeb9c80..c6094c3d2 100644
--- a/libc/sysdeps/linux/common/bits/uClibc_mutex.h
+++ b/libc/sysdeps/linux/common/bits/uClibc_mutex.h
@@ -62,7 +62,55 @@
#define __UCLIBC_MUTEX_UNLOCK(M) \
__UCLIBC_MUTEX_CONDITIONAL_UNLOCK(M, 1)
-#else
+#ifdef __USE_STDIO_FUTEXES__
+
+#include <bits/stdio-lock.h>
+
+#define __UCLIBC_IO_MUTEX(M) _IO_lock_t M
+#define __UCLIBC_IO_MUTEX_LOCK(M) _IO_lock_lock(M)
+#define __UCLIBC_IO_MUTEX_UNLOCK(M) _IO_lock_unlock(M)
+#define __UCLIBC_IO_MUTEX_TRYLOCK(M) _IO_lock_trylock(M)
+#define __UCLIBC_IO_MUTEX_INIT(M) _IO_lock_t M = _IO_lock_initializer
+#define __UCLIBC_IO_MUTEX_EXTERN(M) extern _IO_lock_t M
+
+#define __UCLIBC_IO_MUTEX_CONDITIONAL_LOCK(M,C) \
+ if (C) { \
+ _IO_lock_lock(M); \
+ }
+
+#define __UCLIBC_IO_MUTEX_CONDITIONAL_UNLOCK(M,C) \
+ if (C) { \
+ _IO_lock_unlock(M); \
+ }
+
+#define __UCLIBC_IO_MUTEX_AUTO_LOCK(M,A,V) \
+ __UCLIBC_IO_MUTEX_CONDITIONAL_LOCK(M,((A=(V))) == 0)
+
+#define __UCLIBC_IO_MUTEX_AUTO_UNLOCK(M,A) \
+ __UCLIBC_IO_MUTEX_CONDITIONAL_UNLOCK(M,((A) == 0))
+
+#define __UCLIBC_IO_MUTEX_LOCK_CANCEL_UNSAFE(M) _IO_lock_lock(M)
+#define __UCLIBC_IO_MUTEX_UNLOCK_CANCEL_UNSAFE(M) _IO_lock_unlock(M)
+
+#else /* of __USE_STDIO_FUTEXES__ */
+
+#define __UCLIBC_IO_MUTEX(M) __UCLIBC_MUTEX(M)
+#define __UCLIBC_IO_MUTEX_LOCK(M) __UCLIBC_MUTEX_CONDITIONAL_LOCK(M, 1)
+#define __UCLIBC_IO_MUTEX_UNLOCK(M) __UCLIBC_MUTEX_CONDITIONAL_UNLOCK(M, 1)
+#define __UCLIBC_IO_MUTEX_TRYLOCK(M) __UCLIBC_MUTEX_TRYLOCK_CANCEL_UNSAFE(M)
+#define __UCLIBC_IO_MUTEX_INIT(M) __UCLIBC_MUTEX_INIT(M, PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP)
+#define __UCLIBC_IO_MUTEX_EXTERN(M) __UCLIBC_MUTEX_EXTERN(M)
+#define __UCLIBC_IO_MUTEX_AUTO_LOCK(M,A,V) __UCLIBC_MUTEX_AUTO_LOCK(M,A,V)
+#define __UCLIBC_IO_MUTEX_AUTO_UNLOCK(M,A) __UCLIBC_MUTEX_AUTO_UNLOCK(M,A)
+#define __UCLIBC_IO_MUTEX_LOCK_CANCEL_UNSAFE(M) __UCLIBC_MUTEX_LOCK_CANCEL_UNSAFE(M)
+#define __UCLIBC_IO_MUTEX_UNLOCK_CANCEL_UNSAFE(M) __UCLIBC_MUTEX_UNLOCK_CANCEL_UNSAFE(M)
+#define __UCLIBC_IO_MUTEX_CONDITIONAL_LOCK(M,C) __UCLIBC_MUTEX_CONDITIONAL_LOCK(M, 1)
+#define __UCLIBC_IO_MUTEX_CONDITIONAL_UNLOCK(M,C) __UCLIBC_MUTEX_CONDITIONAL_UNLOCK(M, 1)
+
+#endif /* of __USE_STDIO_FUTEXES__ */
+
+
+#else /* of __UCLIBC_HAS_THREADS__ */
#define __UCLIBC_MUTEX(M) void *__UCLIBC_MUTEX_DUMMY_ ## M
#define __UCLIBC_MUTEX_INIT(M,I) extern void *__UCLIBC_MUTEX_DUMMY_ ## M
@@ -83,6 +131,22 @@
#define __UCLIBC_MUTEX_LOCK(M) ((void)0)
#define __UCLIBC_MUTEX_UNLOCK(M) ((void)0)
-#endif
+#define __UCLIBC_IO_MUTEX(M) __UCLIBC_MUTEX(M)
+#define __UCLIBC_IO_MUTEX_LOCK(M) __UCLIBC_MUTEX_CONDITIONAL_LOCK(M, 1)
+#define __UCLIBC_IO_MUTEX_UNLOCK(M) __UCLIBC_MUTEX_CONDITIONAL_UNLOCK(M, 1)
+#define __UCLIBC_IO_MUTEX_TRYLOCK(M) __UCLIBC_MUTEX_TRYLOCK_CANCEL_UNSAFE(M)
+#define __UCLIBC_IO_MUTEX_INIT(M) __UCLIBC_MUTEX_INIT(M, PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP)
+#define __UCLIBC_IO_MUTEX_EXTERN(M) __UCLIBC_MUTEX_EXTERN(M)
+#define __UCLIBC_IO_MUTEX_AUTO_LOCK(M,A,V) __UCLIBC_MUTEX_AUTO_LOCK(M,A,V)
+#define __UCLIBC_IO_MUTEX_AUTO_UNLOCK(M,A) __UCLIBC_MUTEX_AUTO_UNLOCK(M,A)
+#define __UCLIBC_IO_MUTEX_LOCK_CANCEL_UNSAFE(M) __UCLIBC_MUTEX_LOCK_CANCEL_UNSAFE(M)
+#define __UCLIBC_IO_MUTEX_UNLOCK_CANCEL_UNSAFE(M) __UCLIBC_MUTEX_UNLOCK_CANCEL_UNSAFE(M)
+#define __UCLIBC_IO_MUTEX_CONDITIONAL_LOCK(M,C) __UCLIBC_MUTEX_CONDITIONAL_LOCK(M, 1)
+#define __UCLIBC_IO_MUTEX_CONDITIONAL_UNLOCK(M,C) __UCLIBC_MUTEX_CONDITIONAL_UNLOCK(M, 1)
+
+#endif /* of __UCLIBC_HAS_THREADS__ */
+
+#define __UCLIBC_IO_MUTEX_TRYLOCK_CANCEL_UNSAFE(M) \
+ __UCLIBC_IO_MUTEX_TRYLOCK(M)
#endif /* _UCLIBC_MUTEX_H */
diff --git a/libc/sysdeps/linux/common/bits/uClibc_stdio.h b/libc/sysdeps/linux/common/bits/uClibc_stdio.h
index 3631ef79f..a8cf4eb56 100644
--- a/libc/sysdeps/linux/common/bits/uClibc_stdio.h
+++ b/libc/sysdeps/linux/common/bits/uClibc_stdio.h
@@ -134,26 +134,26 @@
__UCLIBC_MUTEX_AUTO_LOCK_VAR(__infunc_user_locking)
#define __STDIO_AUTO_THREADLOCK(__stream) \
- __UCLIBC_MUTEX_AUTO_LOCK((__stream)->__lock, __infunc_user_locking, \
+ __UCLIBC_IO_MUTEX_AUTO_LOCK((__stream)->__lock, __infunc_user_locking, \
(__stream)->__user_locking)
#define __STDIO_AUTO_THREADUNLOCK(__stream) \
- __UCLIBC_MUTEX_AUTO_UNLOCK((__stream)->__lock, __infunc_user_locking)
+ __UCLIBC_IO_MUTEX_AUTO_UNLOCK((__stream)->__lock, __infunc_user_locking)
#define __STDIO_ALWAYS_THREADLOCK(__stream) \
- __UCLIBC_MUTEX_LOCK((__stream)->__lock)
+ __UCLIBC_IO_MUTEX_LOCK((__stream)->__lock)
#define __STDIO_ALWAYS_THREADUNLOCK(__stream) \
- __UCLIBC_MUTEX_UNLOCK((__stream)->__lock)
+ __UCLIBC_IO_MUTEX_UNLOCK((__stream)->__lock)
#define __STDIO_ALWAYS_THREADLOCK_CANCEL_UNSAFE(__stream) \
- __UCLIBC_MUTEX_LOCK_CANCEL_UNSAFE((__stream)->__lock)
+ __UCLIBC_IO_MUTEX_LOCK_CANCEL_UNSAFE((__stream)->__lock)
#define __STDIO_ALWAYS_THREADTRYLOCK_CANCEL_UNSAFE(__stream) \
- __UCLIBC_MUTEX_TRYLOCK_CANCEL_UNSAFE((__stream)->__lock)
+ __UCLIBC_IO_MUTEX_TRYLOCK_CANCEL_UNSAFE((__stream)->__lock)
#define __STDIO_ALWAYS_THREADUNLOCK_CANCEL_UNSAFE(__stream) \
- __UCLIBC_MUTEX_UNLOCK_CANCEL_UNSAFE((__stream)->__lock)
+ __UCLIBC_IO_MUTEX_UNLOCK_CANCEL_UNSAFE((__stream)->__lock)
#ifdef __UCLIBC_HAS_THREADS__
#define __STDIO_SET_USER_LOCKING(__stream) ((__stream)->__user_locking = 1)
@@ -161,6 +161,14 @@
#define __STDIO_SET_USER_LOCKING(__stream) ((void)0)
#endif
+#ifdef __UCLIBC_HAS_THREADS__
+#ifdef __USE_STDIO_FUTEXES__
+#define STDIO_INIT_MUTEX(M) _IO_lock_init(M)
+#else
+#define STDIO_INIT_MUTEX(M) __stdio_init_mutex(& M)
+#endif
+#endif
+
/**********************************************************************/
#define __STDIO_IOFBF 0 /* Fully buffered. */
@@ -275,7 +283,7 @@ struct __STDIO_FILE_STRUCT {
#endif
#ifdef __UCLIBC_HAS_THREADS__
int __user_locking;
- __UCLIBC_MUTEX(__lock);
+ __UCLIBC_IO_MUTEX(__lock);
#endif
/* Everything after this is unimplemented... and may be trashed. */
#if __STDIO_BUILTIN_BUF_SIZE > 0
@@ -351,9 +359,9 @@ extern void _stdio_term(void) attribute_hidden;
extern struct __STDIO_FILE_STRUCT *_stdio_openlist;
#ifdef __UCLIBC_HAS_THREADS__
-__UCLIBC_MUTEX_EXTERN(_stdio_openlist_add_lock);
+__UCLIBC_IO_MUTEX_EXTERN(_stdio_openlist_add_lock);
#ifdef __STDIO_BUFFERS
-__UCLIBC_MUTEX_EXTERN(_stdio_openlist_del_lock);
+__UCLIBC_IO_MUTEX_EXTERN(_stdio_openlist_del_lock);
extern volatile int _stdio_openlist_use_count; /* _stdio_openlist_del_lock */
extern int _stdio_openlist_del_count; /* _stdio_openlist_del_lock */
#endif