Built motion from commit 6a09e18b.|2.6.11

[motion2.git] / legacy-libs / grpc-cloned / deps / grpc / src / core / lib / gpr / atm.cc

diff --git a/legacy-libs/grpc-cloned/deps/grpc/src/core/lib/gpr/atm.cc b/legacy-libs/grpc-cloned/deps/grpc/src/core/lib/gpr/atm.cc
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+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/atm.h>
+
+#include "src/core/lib/gpr/useful.h"
+
+gpr_atm gpr_atm_no_barrier_clamped_add(gpr_atm* value, gpr_atm delta,
+                                       gpr_atm min, gpr_atm max) {
+  gpr_atm current_value;
+  gpr_atm new_value;
+  do {
+    current_value = gpr_atm_no_barrier_load(value);
+    new_value = GPR_CLAMP(current_value + delta, min, max);
+    if (new_value == current_value) break;
+  } while (!gpr_atm_no_barrier_cas(value, current_value, new_value));
+  return new_value;
+}