pkgDepCache::ActionGroup Class Reference

Represents an active action group. More...

#include <depcache.h>

List of all members.

Public Member Functions
	ActionGroup (pkgDepCache &cache)
	Create a new ActionGroup.
void	release ()
	Clean up the action group before it is destroyed.
	~ActionGroup ()
	Destroy the action group.

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Detailed Description

Represents an active action group.

An action group is a group of actions that are currently being performed. While an active group is active, certain routine clean-up actions that would normally be performed after every cache operation are delayed until the action group is completed. This is necessary primarily to avoid inefficiencies when modifying a large number of packages at once.

This class represents an active action group. Creating an instance will create an action group; destroying one will destroy the corresponding action group.

The following operations are suppressed by this class:

• Keeping the Marked and Garbage flags up to date.

Note:

This can be used in the future to easily accumulate atomic actions for undo or to display "what apt did anyway"; e.g., change the counter of how many action groups are active to a std::set of pointers to them and use those to store information about what happened in a group in the group.

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Constructor & Destructor Documentation

ActionGroup

(

pkgDepCache &

cache

)

Create a new ActionGroup.

Parameters:

cache

The cache that this ActionGroup should manipulate.

As long as this object exists, no automatic cleanup operations will be undertaken.

~ActionGroup

(

)

Destroy the action group.

If this is the last action group, the automatic cache cleanup operations will be undertaken.

References release().

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Member Function Documentation

void release

(

)

Clean up the action group before it is destroyed.

If it is destroyed later, no second cleanup wil be run.

References pkgDepCache::MarkAndSweep().

Referenced by ~ActionGroup().

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

• /space/home/egon/devel/apt/cve-fix/debian/squeeze/apt-0.8.10.3+squeeze3/apt-pkg/depcache.h
• /space/home/egon/devel/apt/cve-fix/debian/squeeze/apt-0.8.10.3+squeeze3/apt-pkg/depcache.cc