diff options
Diffstat (limited to 'viengoos/mutex.h')
| -rw-r--r-- | viengoos/mutex.h | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/viengoos/mutex.h b/viengoos/mutex.h index f6ed2ff..245cb3a 100644 --- a/viengoos/mutex.h +++ b/viengoos/mutex.h @@ -21,12 +21,18 @@ #ifndef _MUTEX_H #define _MUTEX_H -#include <l4/thread.h> +#ifdef USE_L4 +# include <l4/thread.h> +#endif #include <atomic.h> #include <assert.h> #include <hurd/lock.h> +#ifdef USE_L4 typedef l4_thread_id_t ss_mutex_t; +#else +typedef int ss_mutex_t; +#endif /* Used by the atomic operations. */ extern void abort (void); @@ -34,6 +40,7 @@ extern void abort (void); static inline void ss_mutex_lock (__const char *caller, int line, ss_mutex_t *lock) { +#ifdef USE_L4 l4_thread_id_t owner; for (;;) @@ -53,6 +60,9 @@ ss_mutex_lock (__const char *caller, int line, ss_mutex_t *lock) __ss_lock_wait (l4_anylocalthread); } +#else +# warning Unimplemened on this platform. +#endif } #define ss_mutex_lock(__sml_lockp) \ @@ -66,6 +76,7 @@ ss_mutex_lock (__const char *caller, int line, ss_mutex_t *lock) static inline void ss_mutex_unlock (__const char *caller, int line, ss_mutex_t *lock) { +#ifdef USE_L4 l4_thread_id_t waiter; waiter = atomic_exchange_acq (lock, l4_nilthread); @@ -80,6 +91,9 @@ ss_mutex_unlock (__const char *caller, int line, ss_mutex_t *lock) /* Signal the waiter. */ __ss_lock_wakeup (waiter); +#else +# warning Unimplemened on this platform. +#endif } #define ss_mutex_unlock(__smu_lockp) \ @@ -93,6 +107,7 @@ ss_mutex_unlock (__const char *caller, int line, ss_mutex_t *lock) static inline bool ss_mutex_trylock (__const char *caller, int line, ss_mutex_t *lock) { +#ifdef USE_L4 l4_thread_id_t owner; owner = atomic_compare_and_exchange_val_acq (lock, l4_myself (), @@ -106,6 +121,10 @@ ss_mutex_trylock (__const char *caller, int line, ss_mutex_t *lock) // ss_mutex_trace_add (SS_MUTEX_TRYLOCK_BLOCKED, caller, line, lock); return false; +#else +# warning Unimplemened on this platform. + return true; +#endif } #define ss_mutex_trylock(__sml_lockp) \ |