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Public Member Functions | Private Member Functions | Private Attributes | Friends | List of all members
Ipc::QuestionerId Class Reference

#include <QuestionerId.h>

Public Member Functions

 QuestionerId ()=default
 to-be-determined ID
 
void pack (TypedMsgHdr &) const
 for sending the ID of the asking process
 
void unpack (const TypedMsgHdr &)
 for receiving the ID of the asking process
 
void rejectAnswerIfStale () const
 does nothing but throws if the questioner was not the current process
 
void print (std::ostream &) const
 reports the stored opaque ID value (for debugging)
 

Private Member Functions

 QuestionerId (const pid_t aPid)
 for MyQuestionerId() convenience
 

Private Attributes

pid_t pid = -1
 

Friends

QuestionerId MyQuestionerId ()
 the questioner ID of the current/calling process
 

Detailed Description

Identifies a kid process sending IPC messages that require an answer. Must be unique across all kids with pending questions.

Definition at line 21 of file QuestionerId.h.

Constructor & Destructor Documentation

◆ QuestionerId() [1/2]

Ipc::QuestionerId::QuestionerId ( )
default

◆ QuestionerId() [2/2]

Ipc::QuestionerId::QuestionerId ( const pid_t  aPid)
inlineexplicitprivate

Definition at line 41 of file QuestionerId.h.

Member Function Documentation

◆ pack()

void Ipc::QuestionerId::pack ( TypedMsgHdr &  hdrMsg) const

Definition at line 25 of file QuestionerId.cc.

References pid, and Ipc::TypedMsgHdr::putPod().

◆ print()

void Ipc::QuestionerId::print ( std::ostream &  os) const

Definition at line 47 of file QuestionerId.cc.

References pid.

Referenced by Ipc::operator<<().

◆ rejectAnswerIfStale()

void Ipc::QuestionerId::rejectAnswerIfStale ( ) const

Definition at line 37 of file QuestionerId.cc.

References Debug::Extra(), Here, Ipc::MyQuestionerId(), pid, pid, and ToSBuf().

◆ unpack()

void Ipc::QuestionerId::unpack ( const TypedMsgHdr &  hdrMsg)

Definition at line 31 of file QuestionerId.cc.

References Ipc::TypedMsgHdr::getPod(), and pid.

Referenced by Ipc::StrandSearchRequest::StrandSearchRequest().

Friends And Related Symbol Documentation

◆ MyQuestionerId

QuestionerId MyQuestionerId ( )
friend

Member Data Documentation

◆ pid

pid_t Ipc::QuestionerId::pid = -1
private

OS process ID of the asking kid. If the kid restarts, it is assumed not to wrap back to the old value until the answer is received.

Definition at line 46 of file QuestionerId.h.

Referenced by pack(), and rejectAnswerIfStale().

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