tesseract::ObjectCache< T > Class Template Reference

#include <object_cache.h>

List of all members.

Classes
struct	ReferenceCount
Public Member Functions
	ObjectCache ()
	~ObjectCache ()
T *	Get (STRING id, TessResultCallback< T * > *loader)
bool	Free (T *t)
void	DeleteUnusedObjects ()

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Detailed Description

template<typename T>
class tesseract::ObjectCache< T >

Definition at line 35 of file object_cache.h.

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Constructor & Destructor Documentation

template<typename T>

tesseract::ObjectCache< T >::ObjectCache

(

)

[inline]

Definition at line 37 of file object_cache.h.

{}

template<typename T>

tesseract::ObjectCache< T >::~ObjectCache

(

)

[inline]

Definition at line 38 of file object_cache.h.

                 {
    mu_.Lock();
    for (int i = 0; i < cache_.size(); i++) {
      if (cache_[i].count > 0) {
        tprintf("ObjectCache(%p)::~ObjectCache(): WARNING! LEAK! object %p "
                "still has count %d (id %s)\n",
                this, cache_[i].object, cache_[i].count,
                cache_[i].id.string());
      } else {
        delete cache_[i].object;
        cache_[i].object = NULL;
      }
    }
    mu_.Unlock();
  }

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Member Function Documentation

template<typename T>

void tesseract::ObjectCache< T >::DeleteUnusedObjects

(

)

[inline]

Definition at line 100 of file object_cache.h.

                             {
    mu_.Lock();
    for (int i = cache_.size() - 1; i >= 0; i--) {
      if (cache_[i].count <= 0) {
        delete cache_[i].object;
        cache_.remove(i);
      }
    }
    mu_.Unlock();
  }

template<typename T>

bool tesseract::ObjectCache< T >::Free

(

T *

t

)

[inline]

Definition at line 86 of file object_cache.h.

                  {
    if (t == NULL) return false;
    mu_.Lock();
    for (int i = 0; i < cache_.size(); i++) {
      if (cache_[i].object == t) {
        --cache_[i].count;
        mu_.Unlock();
        return true;
      }
    }
    mu_.Unlock();
    return false;
  }

template<typename T>

T* tesseract::ObjectCache< T >::Get	(	STRING	id,
		TessResultCallback< T * > *	loader
	)		[inline]

Definition at line 60 of file object_cache.h.

                                          {
    T *retval = NULL;
    mu_.Lock();
    for (int i = 0; i < cache_.size(); i++) {
      if (id == cache_[i].id) {
        retval = cache_[i].object;
        if (cache_[i].object != NULL) {
          cache_[i].count++;
        }
        mu_.Unlock();
        delete loader;
        return retval;
      }
    }
    cache_.push_back(ReferenceCount());
    ReferenceCount &rc = cache_.back();
    rc.id = id;
    retval = rc.object = loader->Run();
    rc.count = (retval != NULL) ? 1 : 0;
    mu_.Unlock();
    return retval;
  }

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

• ccutil/object_cache.h