gpu/config/gpu_info_collector_x11.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include <X11/Xlib.h>
   6
   7 #include "base/logging.h"
   8 #include "gpu/config/gpu_info_collector_linux.h"
   9 #include "third_party/libXNVCtrl/NVCtrl.h"
  10 #include "third_party/libXNVCtrl/NVCtrlLib.h"
  11 #include "ui/gfx/x/x11_types.h"
  12
  13 namespace gpu {
  14
  15 // Use NVCtrl extention to query NV driver version.
  16 // Return empty string on failing.
  17 std::string CollectDriverVersionNVidia() {
  18   Display* display = gfx::GetXDisplay();
  19   if (!display) {
  20     LOG(ERROR) << "XOpenDisplay failed.";
  21     return std::string();
  22   }
  23   int event_base = 0, error_base = 0;
  24   if (!XNVCTRLQueryExtension(display, &event_base, &error_base)) {
  25     VLOG(1) << "NVCtrl extension does not exist.";
  26     return std::string();
  27   }
  28   int screen_count = ScreenCount(display);
  29   for (int screen = 0; screen < screen_count; ++screen) {
  30     char* buffer = NULL;
  31     if (XNVCTRLIsNvScreen(display, screen) &&
  32         XNVCTRLQueryStringAttribute(display, screen, 0,
  33                                     NV_CTRL_STRING_NVIDIA_DRIVER_VERSION,
  34                                     &buffer)) {
  35       std::string driver_version(buffer);
  36       XFree(buffer);
  37       return driver_version;
  38     }
  39   }
  40   return std::string();
  41 }
  42
  43 }  // namespace gpu