proc_advocate.cc File Reference

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Detailed Description

Wrapper used to attach unmodified programs to the Broker.

Definition in file proc_advocate.cc.

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Enumerations
enum	{ PAB_DONE }
enum	{ PAF_DONE = (1L << PAB_DONE) }
Functions
void	sigchld (int sig)
	Handle a SIGCHLD signal.
void	sigpass (int sig)
	A signal handler that passes the received signal on to the child process.
void	sigalrm (int sig)
	The SIGALRM signal handler.
void	paUsage (const char *prog_name)
	Print out the usage statement to standard error.
int	paProcessOptions (int &argc_inout, char **&argv_inout)
	Process the command line options.
Broker::RealTimeTask_ptr	paGetAdvocate (CORBA::ORB_ptr orb, Broker::Manager_ptr manager, const char *task_ior, const char *task_name)
	Create the advocate and begin CPU scheduling based on the command line parameters.
int	paParentPart (Broker::RealTimeTask_ptr rtt)
	The parent portion of the fork(2) between pa and the monitored utility.
int	paChildPart (char *argv[])
	The child portion of the fork(2) between the proc_advocate and the monitored utility.
int	main (int argc, char *argv[])
Variables
struct {
unsigned long   pa_Flags
const char *   pa_ManagerIOR
const char *   pa_TaskIOR
const char *   pa_TaskName
pid_t   pa_ChildPID
CORBA::ULong   pa_ChildPeriod
Broker::RealTimeTask_ptr   pa_Advocate
rk_resource_set_t   pa_ResourceSet
unsigned long long   pa_LastUsage
}	pa_data

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Function Documentation

int paChildPart (  char *  argv[]  )  [static]

The child portion of the fork(2) between the proc_advocate and the monitored utility. This function will execvp(3) the utility with the given arguments. Parameters: argv  The utility to startup and its arguments. Returns: A failure exit code, otherwise this function will not return because of the execvp(3). See also: paParentPart Definition at line 570 of file proc_advocate.cc. References ensure.

Broker::RealTimeTask_ptr paGetAdvocate (  CORBA::ORB_ptr  orb, Broker::Manager_ptr  manager, const char *  task_ior, const char *  task_name )  [static]

Create the advocate and begin CPU scheduling based on the command line parameters. Parameters: orb  Pointer to the ORB instance. manager  The manager for this machine. task_ior  The IOR of the Broker::RealTimeTask to use or NULL if a task should be created. task_name  The name of the Broker::RealTimeTask to create or NULL if an existing task should be used. Returns: A pointer to the allocated advocate. Definition at line 308 of file proc_advocate.cc. References ensure, manager, orb, require, rk_proc_get_rset(), rk_resource_set_get_usage(), rtt, Broker::ScheduleParameters, DelegateMixin< T, T_var >::SetDelegateAttribute(), and Broker::TaskParameters.

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int paParentPart (  Broker::RealTimeTask_ptr  rtt  )  [static]

The parent portion of the fork(2) between pa and the monitored utility. This function will attach itself to a resource set to ensure that it has some CPU time to work and then wait for gkrellm connections or the child's death. Parameters: rtt  The Broker::RealTimeTask that is managing this process. Returns: The return code for main(). See also: paChildPart Definition at line 420 of file proc_advocate.cc. References ensure, require, rtt, sigalrm(), sigchld(), and sigpass().

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int paProcessOptions (  int &  argc_inout, char **&  argv_inout )  [static]

Process the command line options. Parameters: argc_inout  Reference to main's argc variable. On return, the variable will contain the number of arguments remaining after option processing. argv_inout  Reference to main's argv variable. On return, the variable will contain the remaining argument values. Returns: True if the options were processed correctly, false otherwise. Definition at line 196 of file proc_advocate.cc. References string_to_microsec().

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void paUsage (  const char *  prog_name  )  [static]

Print out the usage statement to standard error. Parameters: prog_name  The program name. Definition at line 154 of file proc_advocate.cc. References require.

void sigalrm (  int  sig  )  [static]

The SIGALRM signal handler. This function will be called at the end of every period to report CPU usage to the advocate. Parameters: sig  The actual signal number received. Definition at line 108 of file proc_advocate.cc. References NULL_RESOURCE_SET, require, and rk_resource_set_get_usage(). Referenced by paParentPart().

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void sigchld (  int  sig  )  [static]

Handle a SIGCHLD signal. This function will be called when the child exits. Parameters: The  actual signal number received. Definition at line 82 of file proc_advocate.cc. References require. Referenced by paParentPart().

void sigpass (  int  sig  )  [static]

A signal handler that passes the received signal on to the child process. Parameters: sig  The actual signal number received. Definition at line 94 of file proc_advocate.cc. References require. Referenced by paParentPart().

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