impeller::UniqueResourceVKT< ResourceType_ > Class Template Reference

A unique handle to a resource which will be reclaimed by the specified resource manager. More...

#include <resource_manager_vk.h>

Public Types
using	ResourceType = ResourceType_

Public Member Functions
	UniqueResourceVKT (std::weak_ptr< ResourceManagerVK > resource_manager)
	Construct a unique resource handle belonging to a manager. More...
	UniqueResourceVKT (std::weak_ptr< ResourceManagerVK > resource_manager, ResourceType &&resource)
	Construct a unique resource handle belonging to a manager. More...
	~UniqueResourceVKT ()
const ResourceType *	operator-> () const
	Returns a pointer to the resource. More...
void	Swap (ResourceType &&other)
	Reclaims the existing resource, if any, and replaces it. More...
void	Reset ()
	Reclaims the existing resource, if any. More...

Detailed Description

template<class ResourceType_>
class impeller::UniqueResourceVKT< ResourceType_ >

A unique handle to a resource which will be reclaimed by the specified resource manager.

Template Parameters

ResourceType_

A move-constructible resource type.

Definition at line 140 of file resource_manager_vk.h.

Member Typedef Documentation

ResourceType

template<class ResourceType_ >

using impeller::UniqueResourceVKT< ResourceType_ >::ResourceType = ResourceType_

Definition at line 142 of file resource_manager_vk.h.

Constructor & Destructor Documentation

UniqueResourceVKT() [1/2]

template<class ResourceType_ >

impeller::UniqueResourceVKT< ResourceType_ >::UniqueResourceVKT ( std::weak_ptr< ResourceManagerVK >  resource_manager )

inlineexplicit

Construct a unique resource handle belonging to a manager.

Initially the handle is empty, and can be populated by calling Swap.

Parameters

[in]

resource_manager

The resource manager.

Definition at line 149 of file resource_manager_vk.h.

      : resource_manager_(std::move(resource_manager)) {}

UniqueResourceVKT() [2/2]

template<class ResourceType_ >

impeller::UniqueResourceVKT< ResourceType_ >::UniqueResourceVKT ( std::weak_ptr< ResourceManagerVK >  resource_manager, ResourceType &&  resource  )

inlineexplicit

Construct a unique resource handle belonging to a manager.

Initially the handle is populated with the specified resource, but can be replaced (reclaiming the old resource) by calling Swap.

Parameters

[in]	resource_manager	The resource manager.
[in]	resource	The resource to move.

Definition at line 159 of file resource_manager_vk.h.

      : resource_manager_(std::move(resource_manager)),
        resource_(
            std::make_unique<ResourceVKT<ResourceType>>(std::move(resource))) {}

~UniqueResourceVKT()

template<class ResourceType_ >

impeller::UniqueResourceVKT< ResourceType_ >::~UniqueResourceVKT ( )

inline

Definition at line 165 of file resource_manager_vk.h.

{ Reset(); }

Member Function Documentation

operator->()

template<class ResourceType_ >

const ResourceType* impeller::UniqueResourceVKT< ResourceType_ >::operator-> ( ) const

inline

Returns a pointer to the resource.

Definition at line 168 of file resource_manager_vk.h.

                                         {
    // If this would segfault, fail with a nicer error message.
    FML_CHECK(resource_) << "UniqueResourceVKT was reclaimed.";
 
    return resource_.get()->Get();
  }

Reset()

template<class ResourceType_ >

void impeller::UniqueResourceVKT< ResourceType_ >::Reset ( )

inline

Reclaims the existing resource, if any.

Definition at line 184 of file resource_manager_vk.h.

               {
    if (!resource_) {
      return;
    }
    // If there is a manager, ask it to reclaim the resource. If there isn't a
    // manager (because the manager has been destroyed), just drop it on the
    // floor here.
    if (auto manager = resource_manager_.lock()) {
      manager->Reclaim(std::move(resource_));
    }
    resource_.reset();
  }

Referenced by impeller::UniqueResourceVKT< ImageResource >::Swap(), and impeller::UniqueResourceVKT< ImageResource >::~UniqueResourceVKT().

Swap()

template<class ResourceType_ >

void impeller::UniqueResourceVKT< ResourceType_ >::Swap ( ResourceType &&  other )

inline

Reclaims the existing resource, if any, and replaces it.

Parameters

[in]

other

The (new) resource to move.

Definition at line 178 of file resource_manager_vk.h.

                                  {
    Reset();
    resource_ = std::make_unique<ResourceVKT<ResourceType>>(std::move(other));
  }

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

• impeller/renderer/backend/vulkan/resource_manager_vk.h