/* We need external help for these */
-#if 0
+#if defined(hb_atomic_int_impl_add) \
+ && defined(hb_atomic_ptr_impl_get) \
+ && defined(hb_atomic_ptr_impl_cmpexch)
+/* Defined externally, i.e. in config.h; must have typedef'ed hb_atomic_int_impl_t as well. */
-#elif !defined(HB_NO_MT) && defined(_MSC_VER) && _MSC_VER >= 1600
-#include <intrin.h>
-/* On x86, _InterlockedCompareExchangePointer is a macro defined in concrt.h */
-#include <concrt.h>
+#elif !defined(HB_NO_MT) && (defined(_WIN32) || defined(__CYGWIN__))
-typedef long hb_atomic_int_t;
-#define hb_atomic_int_add(AI, V) _InterlockedExchangeAdd (&(AI), (V))
+#include <windows.h>
-#define hb_atomic_ptr_get(P) (MemoryBarrier (), (void *) *(P))
-#define hb_atomic_ptr_cmpexch(P,O,N) (_InterlockedCompareExchangePointer ((void **) (P), (void *) (N), (void *) (O)) == (void *) (O))
+/* MinGW has a convoluted history of supporting MemoryBarrier
+ * properly. As such, define a function to wrap the whole
+ * thing. */
+static inline void _HBMemoryBarrier (void) {
+#if !defined(MemoryBarrier)
+ long dummy = 0;
+ InterlockedExchange (&dummy, 1);
+#else
+ MemoryBarrier ();
+#endif
+}
+
+typedef LONG hb_atomic_int_impl_t;
+#define HB_ATOMIC_INT_IMPL_INIT(V) (V)
+#define hb_atomic_int_impl_add(AI, V) InterlockedExchangeAdd (&(AI), (V))
+
+#define hb_atomic_ptr_impl_get(P) (_HBMemoryBarrier (), (void *) *(P))
+#define hb_atomic_ptr_impl_cmpexch(P,O,N) (InterlockedCompareExchangePointer ((void **) (P), (void *) (N), (void *) (O)) == (void *) (O))
#elif !defined(HB_NO_MT) && defined(__APPLE__)
#include <libkern/OSAtomic.h>
+#ifdef __MAC_OS_X_MIN_REQUIRED
+#include <AvailabilityMacros.h>
+#elif defined(__IPHONE_OS_MIN_REQUIRED)
+#include <Availability.h>
+#endif
+
-typedef int32_t hb_atomic_int_t;
-#define hb_atomic_int_add(AI, V) (OSAtomicAdd32Barrier ((V), &(AI)) - (V))
+typedef int32_t hb_atomic_int_impl_t;
+#define HB_ATOMIC_INT_IMPL_INIT(V) (V)
+#define hb_atomic_int_impl_add(AI, V) (OSAtomicAdd32Barrier ((V), &(AI)) - (V))
-#define hb_atomic_ptr_get(P) (OSMemoryBarrier (), (void *) *(P))
-#define hb_atomic_ptr_cmpexch(P,O,N) OSAtomicCompareAndSwapPtrBarrier ((void *) (O), (void *) (N), (void **) (P))
+#define hb_atomic_ptr_impl_get(P) (OSMemoryBarrier (), (void *) *(P))
+#if (MAC_OS_X_VERSION_MIN_REQUIRED > MAC_OS_X_VERSION_10_4 || __IPHONE_VERSION_MIN_REQUIRED >= 20100)
+#define hb_atomic_ptr_impl_cmpexch(P,O,N) OSAtomicCompareAndSwapPtrBarrier ((void *) (O), (void *) (N), (void **) (P))
+#else
+#if __ppc64__ || __x86_64__ || __aarch64__
+#define hb_atomic_ptr_impl_cmpexch(P,O,N) OSAtomicCompareAndSwap64Barrier ((int64_t) (O), (int64_t) (N), (int64_t*) (P))
+#else
+#define hb_atomic_ptr_impl_cmpexch(P,O,N) OSAtomicCompareAndSwap32Barrier ((int32_t) (O), (int32_t) (N), (int32_t*) (P))
+#endif
+#endif
#elif !defined(HB_NO_MT) && defined(HAVE_INTEL_ATOMIC_PRIMITIVES)
-typedef int hb_atomic_int_t;
-#define hb_atomic_int_add(AI, V) __sync_fetch_and_add (&(AI), (V))
+typedef int hb_atomic_int_impl_t;
+#define HB_ATOMIC_INT_IMPL_INIT(V) (V)
+#define hb_atomic_int_impl_add(AI, V) __sync_fetch_and_add (&(AI), (V))
-#define hb_atomic_ptr_get(P) (void *) (__sync_synchronize (), *(P))
-#define hb_atomic_ptr_cmpexch(P,O,N) __sync_bool_compare_and_swap ((P), (O), (N))
+#define hb_atomic_ptr_impl_get(P) (void *) (__sync_synchronize (), *(P))
+#define hb_atomic_ptr_impl_cmpexch(P,O,N) __sync_bool_compare_and_swap ((P), (O), (N))
-#elif !defined(HB_NO_MT) && defined(HAVE_GLIB)
-#include <glib.h>
-typedef int hb_atomic_int_t;
-#if GLIB_CHECK_VERSION(2,29,5)
-#define hb_atomic_int_add(AI, V) g_atomic_int_add (&(AI), (V))
-#else
-#define hb_atomic_int_add(AI, V) g_atomic_int_exchange_and_add (&(AI), (V))
-#endif
+#elif !defined(HB_NO_MT) && defined(HAVE_SOLARIS_ATOMIC_OPS)
+
+#include <atomic.h>
+#include <mbarrier.h>
+
+typedef unsigned int hb_atomic_int_impl_t;
+#define HB_ATOMIC_INT_IMPL_INIT(V) (V)
+#define hb_atomic_int_impl_add(AI, V) ( ({__machine_rw_barrier ();}), atomic_add_int_nv (&(AI), (V)) - (V))
-#define hb_atomic_ptr_get(P) g_atomic_pointer_get (P)
-#define hb_atomic_ptr_cmpexch(P,O,N) g_atomic_pointer_compare_and_exchange ((void **) (P), (void *) (O), (void *) (N))
+#define hb_atomic_ptr_impl_get(P) ( ({__machine_rw_barrier ();}), (void *) *(P))
+#define hb_atomic_ptr_impl_cmpexch(P,O,N) ( ({__machine_rw_barrier ();}), atomic_cas_ptr ((void **) (P), (void *) (O), (void *) (N)) == (void *) (O) ? true : false)
+#elif !defined(HB_NO_MT) && defined(_AIX) && defined(__IBMCPP__)
+
+#include <builtins.h>
+
+
+static inline int hb_fetch_and_add(volatile int* AI, unsigned int V) {
+ __lwsync();
+ int result = __fetch_and_add(AI, V);
+ __isync();
+ return result;
+}
+static inline int hb_compare_and_swaplp(volatile long* P, long O, long N) {
+ __sync();
+ int result = __compare_and_swaplp (P, &O, N);
+ __sync();
+ return result;
+}
+
+typedef int hb_atomic_int_impl_t;
+#define HB_ATOMIC_INT_IMPL_INIT(V) (V)
+#define hb_atomic_int_impl_add(AI, V) hb_fetch_and_add (&(AI), (V))
+
+#define hb_atomic_ptr_impl_get(P) (__sync(), (void *) *(P))
+#define hb_atomic_ptr_impl_cmpexch(P,O,N) hb_compare_and_swaplp ((long*)(P), (long)(O), (long)(N))
+
#elif !defined(HB_NO_MT)
#define HB_ATOMIC_INT_NIL 1 /* Warn that fallback implementation is in use. */
-typedef volatile int hb_atomic_int_t;
-#define hb_atomic_int_add(AI, V) (((AI) += (V)) - (V))
-#define hb_atomic_ptr_get(P) ((void *) *(P))
-#define hb_atomic_ptr_cmpexch(P,O,N) (* (void * volatile *) (P) == (void *) (O) ? (* (void * volatile *) (P) = (void *) (N), true) : false)
+typedef volatile int hb_atomic_int_impl_t;
+#define HB_ATOMIC_INT_IMPL_INIT(V) (V)
+#define hb_atomic_int_impl_add(AI, V) (((AI) += (V)) - (V))
+
+#define hb_atomic_ptr_impl_get(P) ((void *) *(P))
+#define hb_atomic_ptr_impl_cmpexch(P,O,N) (* (void * volatile *) (P) == (void *) (O) ? (* (void * volatile *) (P) = (void *) (N), true) : false)
#else /* HB_NO_MT */
-typedef int hb_atomic_int_t;
-#define hb_atomic_int_add(AI, V) (((AI) += (V)) - (V))
+typedef int hb_atomic_int_impl_t;
+#define HB_ATOMIC_INT_IMPL_INIT(V) (V)
+#define hb_atomic_int_impl_add(AI, V) (((AI) += (V)) - (V))
+
+#define hb_atomic_ptr_impl_get(P) ((void *) *(P))
+#define hb_atomic_ptr_impl_cmpexch(P,O,N) (* (void **) (P) == (void *) (O) ? (* (void **) (P) = (void *) (N), true) : false)
-#define hb_atomic_ptr_get(P) ((void *) *(P))
-#define hb_atomic_ptr_cmpexch(P,O,N) (* (void **) (P) == (void *) (O) ? (* (void **) (P) = (void *) (N), true) : false)
#endif
-/* TODO Add tracing. */
+
+#define HB_ATOMIC_INT_INIT(V) {HB_ATOMIC_INT_IMPL_INIT(V)}
+
+struct hb_atomic_int_t
+{
+ hb_atomic_int_impl_t v;
+
+ inline void set_unsafe (int v_) { v = v_; }
+ inline int get_unsafe (void) const { return v; }
+ inline int inc (void) { return hb_atomic_int_impl_add (const_cast<hb_atomic_int_impl_t &> (v), 1); }
+ inline int dec (void) { return hb_atomic_int_impl_add (const_cast<hb_atomic_int_impl_t &> (v), -1); }
+};
+
+
+#define hb_atomic_ptr_get(P) hb_atomic_ptr_impl_get(P)
+#define hb_atomic_ptr_cmpexch(P,O,N) hb_atomic_ptr_impl_cmpexch((P),(O),(N))
+
#endif /* HB_ATOMIC_PRIVATE_HH */
projects / platform / upstream / harfbuzz.git / blobdiff