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-rw-r--r--Build/source/libs/harfbuzz/harfbuzz-src/src/hb-atomic-private.hh43
1 files changed, 40 insertions, 3 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-atomic-private.hh b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-atomic-private.hh
index 12caacaaba7..02cf6f38811 100644
--- a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-atomic-private.hh
+++ b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-atomic-private.hh
@@ -46,6 +46,41 @@
/* Defined externally, i.e. in config.h; must have typedef'ed hb_atomic_int_impl_t as well. */
+#elif !defined(HB_NO_MT) && defined(__ATOMIC_ACQUIRE)
+
+/* C++11-style GCC primitives. */
+
+typedef int hb_atomic_int_impl_t;
+#define hb_atomic_int_impl_add(AI, V) __atomic_fetch_add (&(AI), (V), __ATOMIC_ACQ_REL)
+
+#define hb_atomic_ptr_impl_get(P) __atomic_load_n ((P), __ATOMIC_ACQUIRE)
+static inline bool
+_hb_atomic_ptr_impl_cmplexch (const void **P, const void *O_, const void *N)
+{
+ const void *O = O_; // Need lvalue
+ return __atomic_compare_exchange_n ((void **) P, (void **) &O, (void *) N, true, __ATOMIC_ACQ_REL, __ATOMIC_RELAXED);
+}
+#define hb_atomic_ptr_impl_cmpexch(P,O,N) (_hb_atomic_ptr_impl_cmplexch ((const void **) (P), (O), (N)))
+
+#elif !defined(HB_NO_MT) && __cplusplus >= 201103L
+
+/* C++11 atomics. */
+
+#include <atomic>
+
+typedef int hb_atomic_int_impl_t;
+#define hb_atomic_int_impl_add(AI, V) (reinterpret_cast<std::atomic<int> *> (&AI)->fetch_add ((V), std::memory_order_acq_rel))
+
+#define hb_atomic_ptr_impl_get(P) (reinterpret_cast<std::atomic<void*> *> (P)->load (std::memory_order_acquire))
+static inline bool
+_hb_atomic_ptr_impl_cmplexch (const void **P, const void *O_, const void *N)
+{
+ const void *O = O_; // Need lvalue
+ return reinterpret_cast<std::atomic<const void*> *> (P)->compare_exchange_weak (O, N, std::memory_order_acq_rel, std::memory_order_relaxed);
+}
+#define hb_atomic_ptr_impl_cmpexch(P,O,N) (_hb_atomic_ptr_impl_cmplexch ((const void **) (P), (O), (N)))
+
+
#elif !defined(HB_NO_MT) && (defined(_WIN32) || defined(__CYGWIN__))
#include <windows.h>
@@ -162,16 +197,18 @@ typedef int hb_atomic_int_impl_t;
#endif
+#ifndef HB_ATOMIC_INT_INIT
#define HB_ATOMIC_INT_INIT(V) {V}
+#endif
struct hb_atomic_int_t
{
- hb_atomic_int_impl_t v;
+ mutable 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); }
+ inline int inc (void) { return hb_atomic_int_impl_add (v, 1); }
+ inline int dec (void) { return hb_atomic_int_impl_add (v, -1); }
};