diff options
| author | Corinna Vinschen <corinna@vinschen.de> | 2016-03-18 16:40:26 +0300 |
|---|---|---|
| committer | Corinna Vinschen <corinna@vinschen.de> | 2016-03-18 16:40:26 +0300 |
| commit | 7c96d6059c81b15916112ecafbb3a6bcd81a3271 (patch) | |
| tree | 09dcf5a2c6c776cf9bd63b56328af64ebb417bb5 /newlib/libc | |
| parent | 5ccdcf02192aa7dad6bf29fe661c0ca666c4d00f (diff) | |
Arc4random locking: Check for threaded application on Cygwin
libc/stdlib/arc4random.h (_ARC4_LOCK): Special case Cygwin.
(_ARC4_UNLOCK): Ditto.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Diffstat (limited to 'newlib/libc')
| -rw-r--r-- | newlib/libc/stdlib/arc4random.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/newlib/libc/stdlib/arc4random.h b/newlib/libc/stdlib/arc4random.h index 938a80b2e..8bb72f40e 100644 --- a/newlib/libc/stdlib/arc4random.h +++ b/newlib/libc/stdlib/arc4random.h @@ -39,10 +39,29 @@ __LOCK_INIT(static, _arc4random_mutex); +#ifdef __CYGWIN__ + +extern int __isthreaded; + +#define _ARC4_LOCK() \ + do { \ + if (__isthreaded) \ + __lock_acquire (_arc4random_mutex); \ + } while (0) + +#define _ARC4_UNLOCK() \ + do { \ + if (__isthreaded) \ + __lock_release (_arc4random_mutex); \ + } while (0) +#else + #define _ARC4_LOCK() __lock_acquire(_arc4random_mutex) #define _ARC4_UNLOCK() __lock_release(_arc4random_mutex) +#endif + #ifdef _ARC4RANDOM_DATA _ARC4RANDOM_DATA #else |