ForkAnalysisCode Class Reference

simulations using forks. More...

Inheritance diagram for ForkAnalysisCode:

List of all members.

Public Member Functions
	ForkAnalysisCode (const ProblemDescDB &problem_db)
	constructor
	~ForkAnalysisCode ()
	destructor
pid_t	fork_program (const bool block_flag)
	for completion using waitpid() if block_flag is true
void	check_status (const int status)
	error code was returned
void	ifilter_argument_list ()
	set argList for execution of the input filter
void	ofilter_argument_list ()
	set argList for execution of the output filter
void	driver_argument_list (const int analysis_id)
	set argList for execution of the specified analysis driver
Private Attributes
StringArray	argList
	These are converted to an array of const char*'s in fork_program().

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Detailed Description

simulations using forks.

ForkAnalysisCode creates a copy of the parent DAKOTA process using fork()/vfork() and then replaces the copy with a simulation process using execvp(). The parent process can then use waitpid() to wait on completion of the simulation process.

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Member Function Documentation

void check_status

(

const int

status

)

error code was returned

Check to see if the process terminated abnormally (WIFEXITED(status)==0) or if either execvp or the application returned a status code of -1 (WIFEXITED(status)!=0 && (signed char)WEXITSTATUS(status)==-1). If one of these conditions is detected, output a failure message and abort. Note: the application code should not return a status code of -1 unless an immediate abort of dakota is wanted. If for instance, failure capturing is to be used, the application code should write the word "FAIL" to the appropriate results file and return a status code of 0 through exit().

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

• ForkAnalysisCode.H
• ForkAnalysisCode.C

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