diff options
Diffstat (limited to 'gc/include/private/gc_locks.h')
| -rw-r--r-- | gc/include/private/gc_locks.h | 51 |
1 files changed, 33 insertions, 18 deletions
diff --git a/gc/include/private/gc_locks.h b/gc/include/private/gc_locks.h index 5ea1e54..2dbc6ca 100644 --- a/gc/include/private/gc_locks.h +++ b/gc/include/private/gc_locks.h @@ -145,15 +145,15 @@ # if defined(POWERPC) inline static int GC_test_and_set(volatile unsigned int *addr) { int oldval; - int temp = 1; // locked value + int temp = 1; /* locked value */ __asm__ __volatile__( - "1:\tlwarx %0,0,%3\n" // load and reserve - "\tcmpwi %0, 0\n" // if load is - "\tbne 2f\n" // non-zero, return already set - "\tstwcx. %2,0,%1\n" // else store conditional - "\tbne- 1b\n" // retry if lost reservation - "2:\t\n" // oldval is zero if we set + "1:\tlwarx %0,0,%3\n" /* load and reserve */ + "\tcmpwi %0, 0\n" /* if load is */ + "\tbne 2f\n" /* non-zero, return already set */ + "\tstwcx. %2,0,%1\n" /* else store conditional */ + "\tbne- 1b\n" /* retry if lost reservation */ + "2:\t\n" /* oldval is zero if we set */ : "=&r"(oldval), "=p"(addr) : "r"(temp), "1"(addr) : "memory"); @@ -161,7 +161,7 @@ } # define GC_TEST_AND_SET_DEFINED inline static void GC_clear(volatile unsigned int *addr) { - __asm__ __volatile__("eieio" ::: "memory"); + __asm__ __volatile__("eieio" : : : "memory"); *(addr) = 0; } # define GC_CLEAR_DEFINED @@ -219,11 +219,19 @@ # define GC_TEST_AND_SET_DEFINED # endif # ifdef MIPS -# if __mips < 3 || !(defined (_ABIN32) || defined(_ABI64)) \ +# ifdef LINUX +# include <sys/tas.h> +# define GC_test_and_set(addr) _test_and_set((int *) addr,1) +# define GC_TEST_AND_SET_DEFINED +# elif __mips < 3 || !(defined (_ABIN32) || defined(_ABI64)) \ || !defined(_COMPILER_VERSION) || _COMPILER_VERSION < 700 -# define GC_test_and_set(addr, v) test_and_set(addr,v) +# ifdef __GNUC__ +# define GC_test_and_set(addr) _test_and_set(addr,1) +# else +# define GC_test_and_set(addr) test_and_set(addr,1) +# endif # else -# define GC_test_and_set(addr, v) __test_and_set(addr,v) +# define GC_test_and_set(addr) __test_and_set(addr,1) # define GC_clear(addr) __lock_release(addr); # define GC_CLEAR_DEFINED # endif @@ -262,7 +270,7 @@ # endif # if defined(GC_PTHREADS) && !defined(GC_SOLARIS_THREADS) \ - && !defined(GC_IRIX_THREADS) + && !defined(GC_IRIX_THREADS) && !defined(GC_WIN32_THREADS) # define NO_THREAD (pthread_t)(-1) # include <pthread.h> # if defined(PARALLEL_MARK) @@ -431,7 +439,7 @@ # define NO_THREAD (pthread_t)(-1) # define UNSET_LOCK_HOLDER() GC_lock_holder = NO_THREAD # define I_HOLD_LOCK() (pthread_equal(GC_lock_holder, pthread_self())) -# define LOCK() { if (GC_test_and_set(&GC_allocate_lock, 1)) GC_lock(); } +# define LOCK() { if (GC_test_and_set(&GC_allocate_lock)) GC_lock(); } # define UNLOCK() GC_clear(&GC_allocate_lock); extern VOLATILE GC_bool GC_collecting; # define ENTER_GC() \ @@ -440,11 +448,18 @@ } # define EXIT_GC() GC_collecting = 0; # endif /* GC_IRIX_THREADS */ -# ifdef GC_WIN32_THREADS -# include <windows.h> - GC_API CRITICAL_SECTION GC_allocate_ml; -# define LOCK() EnterCriticalSection(&GC_allocate_ml); -# define UNLOCK() LeaveCriticalSection(&GC_allocate_ml); +# if defined(GC_WIN32_THREADS) +# if defined(GC_PTHREADS) +# include <pthread.h> + extern pthread_mutex_t GC_allocate_ml; +# define LOCK() pthread_mutex_lock(&GC_allocate_ml) +# define UNLOCK() pthread_mutex_unlock(&GC_allocate_ml) +# else +# include <windows.h> + GC_API CRITICAL_SECTION GC_allocate_ml; +# define LOCK() EnterCriticalSection(&GC_allocate_ml); +# define UNLOCK() LeaveCriticalSection(&GC_allocate_ml); +# endif # endif # ifndef SET_LOCK_HOLDER # define SET_LOCK_HOLDER() |