dart_utils::MappedResource Class Reference

#include <mapped_resource.h>

Public Member Functions
	MappedResource ()
	MappedResource (MappedResource &&other)
MappedResource &	operator= (MappedResource &&other)
	~MappedResource ()
const uint8_t *	address () const
size_t	size () const

Static Public Member Functions
static bool	LoadFromNamespace (fdio_ns_t *namespc, const std::string &path, MappedResource &resource, bool executable=false)
static bool	LoadFromDir (int dirfd, const std::string &path, MappedResource &resource, bool executable=false)
static bool	LoadFromVmo (const std::string &path, fuchsia::mem::Buffer resource_vmo, MappedResource &resource, bool executable=false)

Detailed Description

Definition at line 50 of file mapped_resource.h.

Constructor & Destructor Documentation

MappedResource() [1/2]

dart_utils::MappedResource::MappedResource ( )

inline

Definition at line 52 of file mapped_resource.h.

: address_(nullptr), size_(0) {}

MappedResource() [2/2]

dart_utils::MappedResource::MappedResource ( MappedResource &&  other )

inline

Definition at line 53 of file mapped_resource.h.

      : address_(other.address_), size_(other.size_) {
    other.address_ = nullptr;
    other.size_ = 0;
  }

~MappedResource()

dart_utils::MappedResource::~MappedResource

(

)

Definition at line 96 of file mapped_resource.cc.

                                {
  if (address_ != nullptr) {
    zx::vmar::root_self()->unmap(reinterpret_cast<uintptr_t>(address_), size_);
    address_ = nullptr;
    size_ = 0;
  }
}

Member Function Documentation

address()

const uint8_t * dart_utils::MappedResource::address ( ) const

inline

Definition at line 92 of file mapped_resource.h.

                                 {
    return reinterpret_cast<const uint8_t*>(address_);
  }

LoadFromDir()

static bool dart_utils::MappedResource::LoadFromDir ( int  dirfd, const std::string &  path, MappedResource &  resource, bool  executable = false  )

static

LoadFromNamespace()

bool dart_utils::MappedResource::LoadFromNamespace ( fdio_ns_t *  namespc, const std::string &  path, MappedResource &  resource, bool  executable = false  )

static

Definition at line 62 of file mapped_resource.cc.

                                                        {
  fuchsia::mem::Buffer resource_vmo;
  return OpenVmo(&resource_vmo, namespc, path, executable) &&
         LoadFromVmo(path, std::move(resource_vmo), resource, executable);
}

LoadFromVmo()

bool dart_utils::MappedResource::LoadFromVmo ( const std::string &  path, fuchsia::mem::Buffer  resource_vmo, MappedResource &  resource, bool  executable = false  )

static

Definition at line 71 of file mapped_resource.cc.

                                                  {
  if (resource_vmo.size == 0) {
    return true;
  }
 
  uint32_t flags = ZX_VM_PERM_READ;
  if (executable) {
    flags |= ZX_VM_PERM_EXECUTE;
  }
  uintptr_t addr;
  zx_status_t status = zx::vmar::root_self()->map(flags, 0, resource_vmo.vmo, 0,
                                                  resource_vmo.size, &addr);
  if (status != ZX_OK) {
    FML_LOG(ERROR) << "Failed to map: " << zx_status_get_string(status);
    return false;
  }
 
  resource.address_ = reinterpret_cast<void*>(addr);
  resource.size_ = resource_vmo.size;
  return true;
}

operator=()

MappedResource & dart_utils::MappedResource::operator= ( MappedResource &&  other )

inline

Definition at line 58 of file mapped_resource.h.

                                                    {
    address_ = other.address_;
    size_ = other.size_;
    other.address_ = nullptr;
    other.size_ = 0;
    return *this;
  }

size()

size_t dart_utils::MappedResource::size ( ) const

inline

Definition at line 95 of file mapped_resource.h.

{ return size_; }

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

• shell/platform/fuchsia/runtime/dart/utils/mapped_resource.h
• shell/platform/fuchsia/runtime/dart/utils/mapped_resource.cc