alib::filetree::OwnerAndGroupResolver Class Reference

Description:

Helper-class to resolve owner and group ids to strings names. The class uses an instance of LRUCacheTable of size 10 for each value to increase the performance of the lookup. Because of this and the fact that the returned string value is located in an internal member buffer, multithreaded invocations of members GetOwnerName and GetGroupName have to be protected against racing conditions. This is up to the user of the type.

Definition at line 243 of file ftvalue.hpp.

#include <ftvalue.hpp>

Public Method Index:
	OwnerAndGroupResolver (PoolAllocator &poolAllocator)
const NString	GetGroupName (const FileStatus &descriptor) const
const NString	GetOwnerName (const FileStatus &descriptor) const
void	SetGroupCacheCapacity (integer numberOfLists, integer entriesPerList)
void	SetOwnerCacheCapacity (integer numberOfLists, integer entriesPerList)

Constructor(s) / Destructor Details:

OwnerAndGroupResolver()

alib::filetree::OwnerAndGroupResolver::OwnerAndGroupResolver ( PoolAllocator & poolAllocator )

inline

Constructor.

Parameters

poolAllocator

The allocator passed to the internal instances of type LRUCacheTable.

Definition at line 261 of file ftvalue.hpp.

Method Details:

GetGroupName()

const NString alib::filetree::OwnerAndGroupResolver::GetGroupName

(

const FileStatus &

descriptor

)

const

Retrieves the file's group name.

See also

Method FileStatus::GetGroupName.

Parameters

descriptor

The file to examine.

Returns

The name of the group of the file.

Definition at line 39 of file ftvalue.cpp.

Here is the call graph for this function:

GetOwnerName()

const NString alib::filetree::OwnerAndGroupResolver::GetOwnerName

(

const FileStatus &

descriptor

)

const

Retrieves the file's owner's name.

See also

Method FileStatus::GetOwnerName.

Parameters

descriptor

The file to examine.

Returns

The name of the owner of the file.

Definition at line 24 of file ftvalue.cpp.

Here is the call graph for this function:

SetGroupCacheCapacity()

void alib::filetree::OwnerAndGroupResolver::SetGroupCacheCapacity	(	integer	numberOfLists,
		integer	entriesPerList )

Changes the capacity of the LRUCacheTable for owner names, by calling void Reserve(integer, integer) .
The default sizes with construction is 6 for both values.

Parameters

numberOfLists	The number of LRU-lists to use.
entriesPerList	The maximum length of each cache list.

SetOwnerCacheCapacity()

void alib::filetree::OwnerAndGroupResolver::SetOwnerCacheCapacity	(	integer	numberOfLists,
		integer	entriesPerList )

Changes the capacity of the LRUCacheTable for owner names, by calling void Reserve(integer, integer) .
The default sizes with construction is 6 for both values.

Parameters

numberOfLists	The number of LRU-lists to use.
entriesPerList	The maximum length of each cache list.

---

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

• ftvalue.hpp
• ftvalue.cpp