1 #ifndef _NEWLIB_STDIO_H 2 #define _NEWLIB_STDIO_H 3 4 #include <sys/lock.h> 5 6 /* Internal locking macros, used to protect stdio functions. In the 7 general case, expand to nothing. Use __SSTR flag in FILE _flags to 8 detect if FILE is private to sprintf/sscanf class of functions; if 9 set then do nothing as lock is not initialised. */ 10 #if !defined(_flockfile) 11 #ifndef __SINGLE_THREAD__ 12 # define _flockfile(fp) (((fp)->_flags & __SSTR) ? 0 : __lock_acquire_recursive((fp)->_lock)) 13 #else 14 # define _flockfile(fp) ((void) 0) 15 #endif 16 #endif 17 18 #if !defined(_funlockfile) 19 #ifndef __SINGLE_THREAD__ 20 # define _funlockfile(fp) (((fp)->_flags & __SSTR) ? 0 : __lock_release_recursive((fp)->_lock)) 21 #else 22 # define _funlockfile(fp) ((void) 0) 23 #endif 24 #endif 25 26 #endif /* _NEWLIB_STDIO_H */ 27