DependencyTracker Class Reference

Dependency tracker class. More...

#include <Dependency.h>

Data Structures
struct	Dependency
	Dependency list node type.
Public Member Functions
	DependencyTracker ()
	Dependency tracker constructor.
	~DependencyTracker ()
	Dependency tracker destructor.
int	addDependency (InstructionNumber instructionNum, CycleCount whenSatisfied, CycleTracker::CycleReason reason)
	Add a data dependency.
int	adjustDependenceChain (CycleCount numCycles)
	Adjust dependency chain (not used).
CycleCount	isDependent (InstructionNumber instructionNum, CycleTracker::CycleReason *reason)
	Check if an instruction is dependent on some data.

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Detailed Description

Dependency tracker class.

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Member Function Documentation

int DependencyTracker::addDependency	(	InstructionNumber	consumerNum,
		CycleCount	whenSatisfied,
		CycleTracker::CycleReason	reason
	)

Add a data dependency.

Parameters:

	consumerNum	is the instruction number who consumes this data dep
	whenSatisfied	is the cycle count when this dependency is satisfied
	reason	is the accounting reason for this delay (if any)

Referenced by McNiagara::sim_instruction().

int DependencyTracker::adjustDependenceChain

(

CycleCount

numCycles

)

Adjust dependency chain (not used).

This should never be used and should not exist. There is never any reason to adjust existing dependencies.

Parameters:

numCycles

is the number of cycle to adjust by

Returns:

always 0

CycleCount DependencyTracker::isDependent	(	InstructionNumber	instructionNum,
		CycleTracker::CycleReason *	reason
	)

Check if an instruction is dependent on some data.

This checks the existing dependencies to see if the given instruction is dependent. It has a side effect in deleting the dependency record of the given instruction, if found.

Parameters:

	instructionNum	is the instruction number to check on
	reason	is an out-parameter giving the reason for any delay

Returns:

the cycle count at which the dependency is satisfied

Referenced by McNiagara::sim_instruction().

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The documentation for this class was generated from the following files:

• sst/elements/mcniagara/Dependency.h
• sst/elements/mcniagara/Dependency.cc