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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
/**
* \class storage::framework::FakeClock
* \ingroup test
*
* \brief Implements a fake clock to use for testing.
*/
#pragma once
#include <vespa/storageframework/generic/clock/clock.h>
#include <mutex>
namespace storage::framework::defaultimplementation {
struct FakeClock : public framework::Clock {
enum Mode {
FAKE_ABSOLUTE, // Time is always equal to supplied absolute time
FAKE_ABSOLUTE_CYCLE // Time is equal to absolute time + counter that
// increases for each request so you never get same
// timestamp twice.
};
private:
Mode _mode;
vespalib::duration _absoluteTime;
mutable time_t _cycleCount;
mutable std::mutex _lock;
public:
explicit FakeClock(Mode m = FAKE_ABSOLUTE, vespalib::duration startTime = 1us);
void setMode(Mode m) {
std::lock_guard guard(_lock);
_mode = m;
}
virtual void setFakeCycleMode() { setMode(FAKE_ABSOLUTE_CYCLE); }
virtual void setAbsoluteTimeInSeconds(uint32_t seconds) {
std::lock_guard guard(_lock);
_absoluteTime = std::chrono::seconds(seconds);
_cycleCount = 0;
_mode = FAKE_ABSOLUTE;
}
virtual void setAbsoluteTimeInMicroSeconds(uint64_t usecs) {
std::lock_guard guard(_lock);
_absoluteTime = std::chrono::microseconds(usecs);
_cycleCount = 0;
_mode = FAKE_ABSOLUTE;
}
virtual void addMilliSecondsToTime(uint64_t ms) {
std::lock_guard guard(_lock);
_absoluteTime += std::chrono::milliseconds(ms);
}
virtual void addSecondsToTime(uint32_t nr) {
std::lock_guard guard(_lock);
_absoluteTime += std::chrono::seconds(nr);
}
int64_t getTimeInMicros() const;
vespalib::system_time getSystemTime() const override {
// For simplicity, assume fake monotonic time follows fake wall clock.
return vespalib::system_time(std::chrono::microseconds(getTimeInMicros()));
}
vespalib::steady_time getMonotonicTime() const override {
// For simplicity, assume fake monotonic time follows fake wall clock.
return vespalib::steady_time(std::chrono::microseconds(getTimeInMicros()));
}
};
}
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