ui: Move surface/ directory out of gfx/, up to ui/.

ui/gfx/surface/transport_dib_linux.cc

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "ui/gfx/surface/transport_dib.h"
-
-#include <errno.h>
-#include <stdlib.h>
-#include <sys/ipc.h>
-#include <sys/shm.h>
-
-#include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
-#include "skia/ext/platform_canvas.h"
-#include "ui/base/x/x11_util.h"
-#include "ui/gfx/size.h"
-
-// The shmat system call uses this as it's invalid return address
-static void *const kInvalidAddress = (void*) -1;
-
-TransportDIB::TransportDIB()
-    : address_(kInvalidAddress),
-      x_shm_(0),
-      display_(NULL),
-      size_(0) {
-}
-
-TransportDIB::~TransportDIB() {
-  if (address_ != kInvalidAddress) {
-    shmdt(address_);
-    address_ = kInvalidAddress;
-  }
-
-  if (x_shm_) {
-    DCHECK(display_);
-    ui::DetachSharedMemory(display_, x_shm_);
-  }
-}
-
-// static
-TransportDIB* TransportDIB::Create(size_t size, uint32 sequence_num) {
-  // We use a mode of 0666 since the X server won't attach to memory which is
-  // 0600 since it can't know if it (as a root process) is being asked to map
-  // someone else's private shared memory region.
-  const int shmkey = shmget(IPC_PRIVATE, size, 0666);
-  if (shmkey == -1) {
-    DLOG(ERROR) << "Failed to create SysV shared memory region"
-                << " errno:" << errno;
-    return NULL;
-  }
-
-  void* address = shmat(shmkey, NULL /* desired address */, 0 /* flags */);
-  // Here we mark the shared memory for deletion. Since we attached it in the
-  // line above, it doesn't actually get deleted but, if we crash, this means
-  // that the kernel will automatically clean it up for us.
-  shmctl(shmkey, IPC_RMID, 0);
-  if (address == kInvalidAddress)
-    return NULL;
-
-  TransportDIB* dib = new TransportDIB;
-
-  dib->key_.shmkey = shmkey;
-  dib->address_ = address;
-  dib->size_ = size;
-  return dib;
-}
-
-// static
-TransportDIB* TransportDIB::Map(Handle handle) {
-  scoped_ptr<TransportDIB> dib(CreateWithHandle(handle));
-  if (!dib->Map())
-    return NULL;
-  return dib.release();
-}
-
-// static
-TransportDIB* TransportDIB::CreateWithHandle(Handle shmkey) {
-  TransportDIB* dib = new TransportDIB;
-  dib->key_.shmkey = shmkey;
-  return dib;
-}
-
-// static
-bool TransportDIB::is_valid_handle(Handle dib) {
-  return dib >= 0;
-}
-
-// static
-bool TransportDIB::is_valid_id(Id id) {
-  return id.shmkey != -1;
-}
-
-skia::PlatformCanvas* TransportDIB::GetPlatformCanvas(int w, int h) {
-  if (address_ == kInvalidAddress && !Map())
-    return NULL;
-  scoped_ptr<skia::PlatformCanvas> canvas(new skia::PlatformCanvas);
-  if (!canvas->initialize(w, h, true, reinterpret_cast<uint8_t*>(memory())))
-    return NULL;
-  return canvas.release();
-}
-
-bool TransportDIB::Map() {
-  if (!is_valid_id(key_))
-    return false;
-  if (address_ != kInvalidAddress)
-    return true;
-
-  struct shmid_ds shmst;
-  if (shmctl(key_.shmkey, IPC_STAT, &shmst) == -1)
-    return false;
-
-  void* address = shmat(key_.shmkey, NULL /* desired address */, 0 /* flags */);
-  if (address == kInvalidAddress)
-    return false;
-
-  address_ = address;
-  size_ = shmst.shm_segsz;
-  return true;
-}
-
-void* TransportDIB::memory() const {
-  DCHECK_NE(address_, kInvalidAddress);
-  return address_;
-}
-
-TransportDIB::Id TransportDIB::id() const {
-  return key_;
-}
-
-TransportDIB::Handle TransportDIB::handle() const {
-  return key_.shmkey;
-}
-
-XID TransportDIB::MapToX(Display* display) {
-  if (!x_shm_) {
-    x_shm_ = ui::AttachSharedMemory(display, key_.shmkey);
-    display_ = display;
-  }
-
-  return x_shm_;
-}