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//
// Copyright © 2017 Arm Ltd. All rights reserved.
// SPDX-License-Identifier: MIT
//
#include "ProfilingStateMachine.hpp"
#include <armnn/Exceptions.hpp>
namespace armnn
{
namespace profiling
{
ProfilingState ProfilingStateMachine::GetCurrentState() const
{
return m_State;
}
void ProfilingStateMachine::TransitionToState(ProfilingState newState)
{
switch (newState)
{
case ProfilingState::Uninitialised:
{
ProfilingState expectedState = m_State.load(std::memory_order::memory_order_relaxed);
do {
if (!IsOneOfStates(expectedState, ProfilingState::Uninitialised))
{
throw armnn::Exception(std::string("Cannot transition from state [")
+ GetProfilingStateName(expectedState)
+"] to [" + GetProfilingStateName(newState) + "]");
}
} while (!m_State.compare_exchange_strong(expectedState, newState,
std::memory_order::memory_order_relaxed));
break;
}
case ProfilingState::NotConnected:
{
ProfilingState expectedState = m_State.load(std::memory_order::memory_order_relaxed);
do {
if (!IsOneOfStates(expectedState, ProfilingState::Uninitialised, ProfilingState::NotConnected,
ProfilingState::Active))
{
throw armnn::Exception(std::string("Cannot transition from state [")
+ GetProfilingStateName(expectedState)
+"] to [" + GetProfilingStateName(newState) + "]");
}
} while (!m_State.compare_exchange_strong(expectedState, newState,
std::memory_order::memory_order_relaxed));
break;
}
case ProfilingState::WaitingForAck:
{
ProfilingState expectedState = m_State.load(std::memory_order::memory_order_relaxed);
do {
if (!IsOneOfStates(expectedState, ProfilingState::NotConnected, ProfilingState::WaitingForAck))
{
throw armnn::Exception(std::string("Cannot transition from state [")
+ GetProfilingStateName(expectedState)
+"] to [" + GetProfilingStateName(newState) + "]");
}
} while (!m_State.compare_exchange_strong(expectedState, newState,
std::memory_order::memory_order_relaxed));
break;
}
case ProfilingState::Active:
{
ProfilingState expectedState = m_State.load(std::memory_order::memory_order_relaxed);
do {
if (!IsOneOfStates(expectedState, ProfilingState::WaitingForAck, ProfilingState::Active))
{
throw armnn::Exception(std::string("Cannot transition from state [")
+ GetProfilingStateName(expectedState)
+"] to [" + GetProfilingStateName(newState) + "]");
}
} while (!m_State.compare_exchange_strong(expectedState, newState,
std::memory_order::memory_order_relaxed));
break;
}
default:
break;
}
}
} //namespace profiling
} //namespace armnn
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