1 files changed, 214 insertions, 0 deletions
diff --git a/erts/lib_src/common/ethr_atomics.c b/erts/lib_src/common/ethr_atomics.c
new file mode 100644
index 0000000000..c41f4a7de7
--- /dev/null
+++ b/erts/lib_src/common/ethr_atomics.c
@@ -0,0 +1,214 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010. All Rights Reserved.
+ *
+ * The contents of this file are subject to the Erlang Public License,
+ * Version 1.1, (the "License"); you may not use this file except in
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved online at http://www.erlang.org/.
+ *
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+/*
+ * Description: The ethread atomic API
+ * Author: Rickard Green
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#define ETHR_INLINE_FUNC_NAME_(X) X ## __
+#define ETHR_ATOMIC_IMPL__
+
+#include "ethread.h"
+#include "ethr_internal.h"
+
+#ifndef ETHR_HAVE_NATIVE_ATOMICS
+ethr_atomic_protection_t ethr_atomic_protection__[1 << ETHR_ATOMIC_ADDR_BITS];
+#endif
+
+int
+ethr_init_atomics(void)
+{
+#ifndef ETHR_HAVE_NATIVE_ATOMICS
+    {
+	int i;
+	for (i = 0; i < (1 << ETHR_ATOMIC_ADDR_BITS); i++) {
+	    res = ethr_spinlock_init(&ethr_atomic_protection__[i].u.lck);
+	    if (res != 0)
+		return res;
+	}
+    }
+#endif
+    return 0;
+}
+
+void
+ethr_atomic_init(ethr_atomic_t *var, ethr_sint_t i)
+{
+    ETHR_ASSERT(var);
+    ethr_atomic_init__(var, i);
+}
+
+void
+ethr_atomic_set(ethr_atomic_t *var, ethr_sint_t i)
+{
+    ETHR_ASSERT(!ethr_not_inited__);
+    ETHR_ASSERT(var);
+    ethr_atomic_set__(var, i);
+}
+
+ethr_sint_t
+ethr_atomic_read(ethr_atomic_t *var)
+{
+    ETHR_ASSERT(!ethr_not_inited__);
+    ETHR_ASSERT(var);
+    return ethr_atomic_read__(var);
+}
+
+
+ethr_sint_t
+ethr_atomic_add_read(ethr_atomic_t *var, ethr_sint_t incr)
+{
+    ETHR_ASSERT(!ethr_not_inited__);
+    ETHR_ASSERT(var);
+    return ethr_atomic_add_read__(var, incr);
+}   
+
+ethr_sint_t
+ethr_atomic_inc_read(ethr_atomic_t *var)
+{
+    ETHR_ASSERT(!ethr_not_inited__);
+    ETHR_ASSERT(var);
+    return ethr_atomic_inc_read__(var);
+}
+
+ethr_sint_t
+ethr_atomic_dec_read(ethr_atomic_t *var)
+{
+    ETHR_ASSERT(!ethr_not_inited__);
+    ETHR_ASSERT(var);
+    return ethr_atomic_dec_read__(var);
+}
+
+void
+ethr_atomic_add(ethr_atomic_t *var, ethr_sint_t incr)
+{
+    ETHR_ASSERT(!ethr_not_inited__);
+    ETHR_ASSERT(var);
+    ethr_atomic_add__(var, incr);
+}   
+    
+void
+ethr_atomic_inc(ethr_atomic_t *var)
+{
+    ETHR_ASSERT(!ethr_not_inited__);
+    ETHR_ASSERT(var);
+    ethr_atomic_inc__(var);
+}
+
+void
+ethr_atomic_dec(ethr_atomic_t *var)
+{
+    ETHR_ASSERT(!ethr_not_inited__);
+    ETHR_ASSERT(var);
+    ethr_atomic_dec__(var);
+}
+
+ethr_sint_t
+ethr_atomic_read_band(ethr_atomic_t *var, ethr_sint_t mask)
+{
+    ETHR_ASSERT(!ethr_not_inited__);
+    ETHR_ASSERT(var);
+    return ethr_atomic_read_band__(var, mask);
+}
+
+ethr_sint_t
+ethr_atomic_read_bor(ethr_atomic_t *var, ethr_sint_t mask)
+{
+    ETHR_ASSERT(!ethr_not_inited__);
+    ETHR_ASSERT(var);
+    return ethr_atomic_read_bor__(var, mask);
+}
+
+ethr_sint_t
+ethr_atomic_xchg(ethr_atomic_t *var, ethr_sint_t new)
+{
+    ETHR_ASSERT(!ethr_not_inited__);
+    ETHR_ASSERT(var);
+    return ethr_atomic_xchg__(var, new);
+}   
+
+ethr_sint_t
+ethr_atomic_cmpxchg(ethr_atomic_t *var, ethr_sint_t new, ethr_sint_t expected)
+{
+    ETHR_ASSERT(!ethr_not_inited__);
+    ETHR_ASSERT(var);
+    return ethr_atomic_cmpxchg__(var, new, expected);
+}
+
+ethr_sint_t
+ethr_atomic_read_acqb(ethr_atomic_t *var)
+{
+    ETHR_ASSERT(!ethr_not_inited__);
+    ETHR_ASSERT(var);
+    return ethr_atomic_read_acqb__(var);
+}
+
+ethr_sint_t
+ethr_atomic_inc_read_acqb(ethr_atomic_t *var)
+{
+    ETHR_ASSERT(!ethr_not_inited__);
+    ETHR_ASSERT(var);
+    return ethr_atomic_inc_read_acqb__(var);
+}
+
+void
+ethr_atomic_set_relb(ethr_atomic_t *var, ethr_sint_t i)
+{
+    ETHR_ASSERT(!ethr_not_inited__);
+    ETHR_ASSERT(var);
+    ethr_atomic_set_relb__(var, i);
+}
+
+void
+ethr_atomic_dec_relb(ethr_atomic_t *var)
+{
+    ETHR_ASSERT(!ethr_not_inited__);
+    ETHR_ASSERT(var);
+    ethr_atomic_dec_relb__(var);
+}
+
+ethr_sint_t
+ethr_atomic_dec_read_relb(ethr_atomic_t *var)
+{
+    ETHR_ASSERT(!ethr_not_inited__);
+    ETHR_ASSERT(var);
+    return ethr_atomic_dec_read_relb__(var);
+}
+
+ethr_sint_t
+ethr_atomic_cmpxchg_acqb(ethr_atomic_t *var, ethr_sint_t new, ethr_sint_t exp)
+{
+    ETHR_ASSERT(!ethr_not_inited__);
+    ETHR_ASSERT(var);
+    return ethr_atomic_cmpxchg_acqb__(var, new, exp);
+}
+
+ethr_sint_t
+ethr_atomic_cmpxchg_relb(ethr_atomic_t *var, ethr_sint_t new, ethr_sint_t exp)
+{
+    ETHR_ASSERT(!ethr_not_inited__);
+    ETHR_ASSERT(var);
+    return ethr_atomic_cmpxchg_relb__(var, new, exp);
+}
+