Class to keep track what Versioned variables were changed. More...

#include <segment.h>

Inheritance diagram for Segment:

Collaboration diagram for Segment:

Public Member Functions
	Segment ()
	Construct the very first Segment. More...

	Segment (std::shared_ptr< Segment > parent)
	Construct a new Segment object. More...

void	Release ()
	Release Segment when it's no longer needed. More...

void	Collapse (std::shared_ptr< Revision > main)
	Compress branch of Segments into one Segment. More...

Public Attributes
std::shared_ptr< Segment >	parent
	Previous Segment. More...

int	version
	Version of that Segment. More...

int	refcount
	Count of references for that Segment. More...

std::list< VersionedI * >	written
	List of all Versioned variables that were changed. More...

Detailed Description

Class to keep track what Versioned variables were changed.

Definition at line 20 of file segment.h.

Constructor & Destructor Documentation

◆ Segment() [1/2]

Segment::Segment ( )

Construct the very first Segment.

Definition at line 7 of file segment.cpp.

                  {
     parent = nullptr;
  
     version = versionCount++;
     refcount = 1;
 }

◆ Segment() [2/2]

Segment::Segment ( std::shared_ptr< Segment > parent )

Construct a new Segment object.

Parameters

parent The parent Segment for new Segment

Definition at line 14 of file segment.cpp.

                                                  {
     parent = my_parent;
     if (parent)
         parent->refcount++;
  
     version = versionCount++;
     refcount = 1;
 }

Member Function Documentation

◆ Collapse()

void Segment::Collapse ( std::shared_ptr< Revision > main )

Compress branch of Segments into one Segment.

Parameters

main	Revision of whose branch of Segments needs to be collapsed

See also: Revision

Definition at line 33 of file segment.cpp.

                                                    {
     while (parent != main->root && parent->refcount == 1) {
         for(auto &v : parent->written) {
             v->Collapse(main, parent);
         }
         parent = parent->parent; // remove parent
     }
 }

◆ Release()

void Segment::Release ( )

Release Segment when it's no longer needed.

Definition at line 23 of file segment.cpp.

                       {
     if (--refcount == 0) {
         for (auto &v: written) {
             v->Release(shared_from_this());
         }
         if (parent != NULL)
             parent->Release();
     }
 }

Member Data Documentation

◆ parent

std::shared_ptr<Segment> Segment::parent

Previous Segment.

Definition at line 54 of file segment.h.

◆ refcount

int Segment::refcount

Count of references for that Segment.

Definition at line 66 of file segment.h.

◆ version

int Segment::version

Version of that Segment.

Definition at line 60 of file segment.h.

◆ written

std::list<VersionedI*> Segment::written

List of all Versioned variables that were changed.

See also: VersionedI

Definition at line 73 of file segment.h.

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

lib/include/segment.h
lib/segment.cpp

Public Member Functions

Public Attributes