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// Copyright 2022 The 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.
#ifndef GRPC_SRC_CORE_LIB_GPRPP_NOTIFICATION_H
#define GRPC_SRC_CORE_LIB_GPRPP_NOTIFICATION_H
#include <grpc/support/port_platform.h>
#include "y_absl/time/clock.h"
#include "y_absl/time/time.h"
#include "src/core/lib/gprpp/sync.h"
namespace grpc_core {
// Polyfill for y_absl::Notification until we can use that type.
class Notification {
public:
void Notify() {
MutexLock lock(&mu_);
notified_ = true;
cv_.SignalAll();
}
void WaitForNotification() {
MutexLock lock(&mu_);
while (!notified_) {
cv_.Wait(&mu_);
}
}
bool WaitForNotificationWithTimeout(y_absl::Duration timeout) {
auto now = y_absl::Now();
auto deadline = now + timeout;
MutexLock lock(&mu_);
while (!notified_ && now < deadline) {
cv_.WaitWithTimeout(&mu_, deadline - now);
now = y_absl::Now();
}
return notified_;
}
bool HasBeenNotified() {
MutexLock lock(&mu_);
return notified_;
}
private:
Mutex mu_;
CondVar cv_;
bool notified_ = false;
};
} // namespace grpc_core
#endif // GRPC_SRC_CORE_LIB_GPRPP_NOTIFICATION_H
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