[EventPipe] Add int64_t atomic compare exchange

Author: mdh1418

src/coreclr/nativeaot/Runtime/eventpipe/ep-rt-aot.cpp

@@ -331,6 +331,12 @@ ep_rt_aot_atomic_dec_int64_t (volatile int64_t *value) {
     return (currentValue - 1);
 }
 
+int64_t
+ep_rt_aot_atomic_compare_exchange_int64_t (volatile int64_t *target, int64_t expected, int64_t value) {
+    STATIC_CONTRACT_NOTHROW;
+    return static_cast<int64_t>(PalInterlockedCompareExchange64 ((volatile int64_t *)target, (int64_t)value, (int64_t)expected));
+}
+
 size_t
 ep_rt_aot_atomic_compare_exchange_size_t (volatile size_t *target, size_t expected, size_t value) {
     STATIC_CONTRACT_NOTHROW;

src/coreclr/nativeaot/Runtime/eventpipe/ep-rt-aot.h

@@ -224,6 +224,16 @@ ep_rt_atomic_dec_int64_t (volatile int64_t *value)
     return ep_rt_aot_atomic_dec_int64_t (value);
 }
 
+static
+inline
+int64_t
+ep_rt_atomic_compare_exchange_int64_t (volatile int64_t *target, int64_t expected, int64_t value)
+{
+    STATIC_CONTRACT_NOTHROW;
+    extern int64_t ep_rt_aot_atomic_compare_exchange_int64_t (volatile int64_t *target, int64_t expected, int64_t value);
+    return ep_rt_aot_atomic_compare_exchange_int64_t (target, expected, value);
+}
+
 static
 inline
 size_t

src/coreclr/vm/eventing/eventpipe/ep-rt-coreclr.h

@@ -229,6 +229,15 @@ ep_rt_atomic_dec_int64_t (volatile int64_t *value)
 	return static_cast<int64_t>(InterlockedDecrement64 ((volatile LONG64 *)(value)));
 }
 
+static
+inline
+int64_t
+ep_rt_atomic_compare_exchange_int64_t (volatile int64_t *target, int64_t expected, int64_t value)
+{
+	STATIC_CONTRACT_NOTHROW;
+	return static_cast<int64_t>(InterlockedCompareExchangeT<int64_t> (target, value, expected));
+}
+
 static
 inline
 size_t

src/mono/mono/eventpipe/ep-rt-mono.h

@@ -355,6 +355,15 @@ ep_rt_atomic_dec_int64_t (volatile int64_t *value)
 	return (int64_t)mono_atomic_dec_i64 ((volatile gint64 *)value);
 }
 
+static
+inline
+int64_t
+ep_rt_atomic_compare_exchange_int64_t (volatile int64_t *target, int64_t expected, int64_t value)
+{
+	STATIC_CONTRACT_NOTHROW;
+	return (int64_t)(mono_atomic_cas_i64 ((volatile gint64 *)(target), (gint64)(value), (gint64)(expected)));
+}
+
 static
 inline
 size_t

src/native/eventpipe/ep-rt.h

@@ -79,6 +79,10 @@ static
 int64_t
 ep_rt_atomic_dec_int64_t (volatile int64_t *value);
 
+static
+int64_t
+ep_rt_atomic_compare_exchange_int64_t (volatile int64_t *target, int64_t expected, int64_t value);
+
 static
 size_t
 ep_rt_atomic_compare_exchange_size_t (volatile size_t *target, size_t expected, size_t value);