| Nikhil Raj | 3ecc510 | 2019-09-03 15:55:33 +0100 | [diff] [blame] | 1 | // |
| 2 | // Copyright © 2017 Arm Ltd. All rights reserved. |
| 3 | // SPDX-License-Identifier: MIT |
| 4 | // |
| 5 | |
| 6 | #include "ProfilingStateMachine.hpp" |
| 7 | |
| 8 | #include <armnn/Exceptions.hpp> |
| 9 | |
| 10 | namespace armnn |
| 11 | { |
| 12 | |
| 13 | namespace profiling |
| 14 | { |
| 15 | |
| 16 | ProfilingState ProfilingStateMachine::GetCurrentState() const |
| 17 | { |
| 18 | return m_State; |
| 19 | } |
| 20 | |
| 21 | void ProfilingStateMachine::TransitionToState(ProfilingState newState) |
| 22 | { |
| 23 | switch (newState) |
| 24 | { |
| 25 | case ProfilingState::Uninitialised: |
| 26 | { |
| 27 | ProfilingState expectedState = m_State.load(std::memory_order::memory_order_relaxed); |
| 28 | do { |
| 29 | if (!IsOneOfStates(expectedState, ProfilingState::Uninitialised)) |
| 30 | { |
| 31 | throw armnn::Exception(std::string("Cannot transition from state [") |
| 32 | + GetProfilingStateName(expectedState) |
| 33 | +"] to [" + GetProfilingStateName(newState) + "]"); |
| 34 | } |
| 35 | } while (!m_State.compare_exchange_strong(expectedState, newState, |
| 36 | std::memory_order::memory_order_relaxed)); |
| 37 | |
| 38 | break; |
| 39 | } |
| 40 | case ProfilingState::NotConnected: |
| 41 | { |
| 42 | ProfilingState expectedState = m_State.load(std::memory_order::memory_order_relaxed); |
| 43 | do { |
| 44 | if (!IsOneOfStates(expectedState, ProfilingState::Uninitialised, ProfilingState::NotConnected, |
| 45 | ProfilingState::Active)) |
| 46 | { |
| 47 | throw armnn::Exception(std::string("Cannot transition from state [") |
| 48 | + GetProfilingStateName(expectedState) |
| 49 | +"] to [" + GetProfilingStateName(newState) + "]"); |
| 50 | } |
| 51 | } while (!m_State.compare_exchange_strong(expectedState, newState, |
| 52 | std::memory_order::memory_order_relaxed)); |
| 53 | |
| 54 | break; |
| 55 | } |
| 56 | case ProfilingState::WaitingForAck: |
| 57 | { |
| 58 | ProfilingState expectedState = m_State.load(std::memory_order::memory_order_relaxed); |
| 59 | do { |
| 60 | if (!IsOneOfStates(expectedState, ProfilingState::NotConnected, ProfilingState::WaitingForAck)) |
| 61 | { |
| 62 | throw armnn::Exception(std::string("Cannot transition from state [") |
| 63 | + GetProfilingStateName(expectedState) |
| 64 | +"] to [" + GetProfilingStateName(newState) + "]"); |
| 65 | } |
| 66 | } while (!m_State.compare_exchange_strong(expectedState, newState, |
| 67 | std::memory_order::memory_order_relaxed)); |
| 68 | |
| 69 | break; |
| 70 | } |
| 71 | case ProfilingState::Active: |
| 72 | { |
| 73 | ProfilingState expectedState = m_State.load(std::memory_order::memory_order_relaxed); |
| 74 | do { |
| 75 | if (!IsOneOfStates(expectedState, ProfilingState::WaitingForAck, ProfilingState::Active)) |
| 76 | { |
| 77 | throw armnn::Exception(std::string("Cannot transition from state [") |
| 78 | + GetProfilingStateName(expectedState) |
| 79 | +"] to [" + GetProfilingStateName(newState) + "]"); |
| 80 | } |
| 81 | } while (!m_State.compare_exchange_strong(expectedState, newState, |
| 82 | std::memory_order::memory_order_relaxed)); |
| 83 | |
| 84 | break; |
| 85 | } |
| 86 | default: |
| 87 | break; |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | } //namespace profiling |
| 92 | |
| 93 | } //namespace armnn |