1 /* 2 Copyright (c) 1990 The Regents of the University of California. 3 All rights reserved. 4 5 Redistribution and use in source and binary forms are permitted 6 provided that the above copyright notice and this paragraph are 7 duplicated in all such forms and that any documentation, 8 and/or other materials related to such 9 distribution and use acknowledge that the software was developed 10 by the University of California, Berkeley. The name of the 11 University may not be used to endorse or promote products derived 12 from this software without specific prior written permission. 13 THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14 IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 16 */ 17 #ifndef _NEWLIB_STDIO_H 18 #define _NEWLIB_STDIO_H 19 20 #include <sys/lock.h> 21 22 /* Internal locking macros, used to protect stdio functions. In the 23 general case, expand to nothing. Use __SSTR flag in FILE _flags to 24 detect if FILE is private to sprintf/sscanf class of functions; if 25 set then do nothing as lock is not initialised. */ 26 #if !defined(_flockfile) 27 #ifndef __SINGLE_THREAD__ 28 # define _flockfile(fp) (((fp)->_flags & __SSTR) ? 0 : __lock_acquire_recursive((fp)->_lock)) 29 #else 30 # define _flockfile(fp) ((void) 0) 31 #endif 32 #endif 33 34 #if !defined(_funlockfile) 35 #ifndef __SINGLE_THREAD__ 36 # define _funlockfile(fp) (((fp)->_flags & __SSTR) ? 0 : __lock_release_recursive((fp)->_lock)) 37 #else 38 # define _funlockfile(fp) ((void) 0) 39 #endif 40 #endif 41 42 #endif /* _NEWLIB_STDIO_H */ 43
