diff options
Diffstat (limited to 'src/cpu/testers/traffic_gen/traffic_gen.hh')
| -rw-r--r-- | src/cpu/testers/traffic_gen/traffic_gen.hh | 180 |
1 files changed, 62 insertions, 118 deletions
diff --git a/src/cpu/testers/traffic_gen/traffic_gen.hh b/src/cpu/testers/traffic_gen/traffic_gen.hh index 6793e24b6..a2fcd3bc0 100644 --- a/src/cpu/testers/traffic_gen/traffic_gen.hh +++ b/src/cpu/testers/traffic_gen/traffic_gen.hh @@ -1,5 +1,5 @@ /* - * Copyright (c) 2012 ARM Limited + * Copyright (c) 2012-2013 ARM Limited * All rights reserved * * The license below extends only to copyright in the software and shall @@ -49,12 +49,12 @@ /** * The traffic generator is a master module that generates stimuli for - * the memory system, based on a collection of simple behaviours that - * are either probabilistic or based on traces. It can be used stand - * alone for creating test cases for interconnect and memory - * controllers, or function as a black box replacement for system - * components that are not yet modelled in detail, e.g. a video engine - * or baseband subsystem. + * the memory system, based on a collection of simple generator + * behaviours that are either probabilistic or based on traces. It can + * be used stand alone for creating test cases for interconnect and + * memory controllers, or function as a black box replacement for + * system components that are not yet modelled in detail, e.g. a video + * engine or baseband subsystem. */ class TrafficGen : public MemObject { @@ -62,123 +62,76 @@ class TrafficGen : public MemObject private: /** - * The system used to determine which mode we are currently operating - * in. + * Determine next state and perform the transition. */ - System* system; + void transition(); /** - * MasterID used in generated requests. + * Enter a new state. + * + * @param newState identifier of state to enter */ - MasterID masterID; - - protected: + void enterState(uint32_t newState); /** - * The state graph is responsible for instantiating and keeping - * track of the various generator states and also perform the - * transitions and call the appropriate functions when entering, - * executing and exiting a state. + * Get the tick of the next event, either an execution or a + * transition. + * + * @return tick of the next update event */ - class StateGraph + Tick nextEventTick() { + return std::min(states[currState]->nextExecuteTick(), + nextTransitionTick); + } - public: - - /** - * Create a state graph from an input file. - * - * @param _owner used solely for the name - * @param _port port used to send requests - * @param file_name configuration description to read in - * @param master_id the unique id used for all requests - */ - StateGraph(TrafficGen& _owner, QueuedMasterPort& _port, - const std::string& file_name, MasterID master_id) - : nextTransitionTick(0), owner(_owner), port(_port) - { - parseConfig(file_name, master_id); - } - - /** - * Get the name, used for DPRINTFs. - * - * @return the owner's name - */ - std::string name() const { return owner.name(); } - - /** - * Either perform a state transition or execute the current - * state, depending on the current time. - */ - void update(); - - /** - * Determine next state and perform the transition. - */ - void transition(); - - /** - * Enter a new state. - * - * @param newState identifier of state to enter - */ - void enterState(uint32_t newState); - - /** - * Get the tick of the next event, either an execution or a - * transition. - * - * @return tick of the next state graph event - */ - Tick nextEventTick() - { - return std::min(states[currState]->nextExecuteTick(), - nextTransitionTick); - - } - - /** Time of next transition */ - Tick nextTransitionTick; - - private: - - /** - * Parse the config file and build the state map and - * transition matrix. - * - * @param file_name Config file name to parse - * @param master_id MasterID to use for generated requests - */ - void parseConfig(const std::string& file_name, MasterID master_id); + /** + * Parse the config file and build the state map and + * transition matrix. + * + * @param file_name Config file name to parse + * @param master_id MasterID to use for generated requests + */ + void parseConfig(const std::string& file_name, MasterID master_id); - /** Struct to represent a probabilistic transition during parsing. */ - struct Transition { - uint32_t from; - uint32_t to; - double p; - }; + /** + * Schedules event for next update and executes an update on the + * state graph, either performing a state transition or executing + * the current state, depending on the current time. + */ + void update(); - /** Pointer to owner of request handler */ - TrafficGen& owner; + /** Struct to represent a probabilistic transition during parsing. */ + struct Transition { + uint32_t from; + uint32_t to; + double p; + }; - /** Pointer to request handler */ - QueuedMasterPort& port; + /** + * The system used to determine which mode we are currently operating + * in. + */ + System* system; - /** State transition matrix */ - std::vector<std::vector<double> > transitionMatrix; + /** + * MasterID used in generated requests. + */ + MasterID masterID; - public: + /** Time of next transition */ + Tick nextTransitionTick; - /** Index of the current state */ - uint32_t currState; + /** State transition matrix */ + std::vector<std::vector<double> > transitionMatrix; - /** Map of states */ - m5::hash_map<uint32_t, BaseGen*> states; - }; + /** Index of the current state */ + uint32_t currState; + /** Map of generator states */ + m5::hash_map<uint32_t, BaseGen*> states; - /** Queued handler */ + /** Queued master port */ class TrafficGenPort : public QueuedMasterPort { public: @@ -197,20 +150,11 @@ class TrafficGen : public MemObject }; + /** The instance of master port used by the traffic generator. */ TrafficGenPort port; - /** Request generator state graph */ - StateGraph stateGraph; - - /** - * Schedules event for next update and executes an update on the - * state graph. - */ - void updateStateGraph(); - - /** Event for updating the state graph */ - EventWrapper<TrafficGen, - &TrafficGen::updateStateGraph> updateStateGraphEvent; + /** Event for scheduling updates */ + EventWrapper<TrafficGen, &TrafficGen::update> updateEvent; public: |