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//
// Copyright (c) 2017 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// SystemInfo_mac.cpp: implementation of the Mac-specific parts of SystemInfo.h
#include "gpu_info_util/SystemInfo_internal.h"
#import <Cocoa/Cocoa.h>
#import <IOKit/IOKitLib.h>
namespace angle
{
namespace
{
std::string GetMachineModel()
{
io_service_t platformExpert = IOServiceGetMatchingService(
kIOMasterPortDefault, IOServiceMatching("IOPlatformExpertDevice"));
if (platformExpert == IO_OBJECT_NULL)
{
return "";
}
CFDataRef modelData = static_cast<CFDataRef>(
IORegistryEntryCreateCFProperty(platformExpert, CFSTR("model"), kCFAllocatorDefault, 0));
if (modelData == nullptr)
{
IOObjectRelease(platformExpert);
return "";
}
std::string result = reinterpret_cast<const char *>(CFDataGetBytePtr(modelData));
IOObjectRelease(platformExpert);
CFRelease(modelData);
return result;
}
// Extracts one integer property from a registry entry.
bool GetEntryProperty(io_registry_entry_t entry, CFStringRef name, uint32_t *value)
{
*value = 0;
CFDataRef data = static_cast<CFDataRef>(
IORegistryEntrySearchCFProperty(entry, kIOServicePlane, name, kCFAllocatorDefault,
kIORegistryIterateRecursively | kIORegistryIterateParents));
if (data == nullptr)
{
return false;
}
const uint32_t *valuePtr = reinterpret_cast<const uint32_t *>(CFDataGetBytePtr(data));
if (valuePtr == nullptr)
{
CFRelease(data);
return false;
}
*value = *valuePtr;
CFRelease(data);
return true;
}
// CGDisplayIOServicePort is deprecated as of macOS 10.9, but has no replacement, see
// https://crbug.com/650837
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
// Find the info of the current GPU.
bool GetActiveGPU(VendorID *vendorId, DeviceID *deviceId)
{
io_registry_entry_t port = CGDisplayIOServicePort(kCGDirectMainDisplay);
return GetEntryProperty(port, CFSTR("vendor-id"), vendorId) &&
GetEntryProperty(port, CFSTR("device-id"), deviceId);
}
#pragma clang diagnostic pop
// Gathers the vendor and device IDs for the PCI GPUs
bool GetPCIDevices(std::vector<GPUDeviceInfo> *devices)
{
// matchDictionary will be consumed by IOServiceGetMatchingServices, no need to release it.
CFMutableDictionaryRef matchDictionary = IOServiceMatching("IOPCIDevice");
io_iterator_t entryIterator;
if (IOServiceGetMatchingServices(kIOMasterPortDefault, matchDictionary, &entryIterator) !=
kIOReturnSuccess)
{
return false;
}
io_registry_entry_t entry = IO_OBJECT_NULL;
while ((entry = IOIteratorNext(entryIterator)) != IO_OBJECT_NULL)
{
constexpr uint32_t kClassCodeDisplayVGA = 0x30000;
uint32_t classCode;
GPUDeviceInfo info;
if (GetEntryProperty(entry, CFSTR("class-code"), &classCode) &&
classCode == kClassCodeDisplayVGA &&
GetEntryProperty(entry, CFSTR("vendor-id"), &info.vendorId) &&
GetEntryProperty(entry, CFSTR("device-id"), &info.deviceId))
{
devices->push_back(info);
}
IOObjectRelease(entry);
}
IOObjectRelease(entryIterator);
return true;
}
} // anonymous namespace
bool GetSystemInfo(SystemInfo *info)
{
{
int32_t major = 0;
int32_t minor = 0;
ParseMacMachineModel(GetMachineModel(), &info->machineModelName, &major, &minor);
info->machineModelVersion = std::to_string(major) + "." + std::to_string(minor);
}
if (!GetPCIDevices(&(info->gpus)))
{
return false;
}
if (info->gpus.empty())
{
return false;
}
// Find the active GPU
{
VendorID activeVendor;
DeviceID activeDevice;
if (!GetActiveGPU(&activeVendor, &activeDevice))
{
return false;
}
for (size_t i = 0; i < info->gpus.size(); ++i)
{
if (info->gpus[i].vendorId == activeVendor && info->gpus[i].deviceId == activeDevice)
{
info->activeGPUIndex = i;
break;
}
}
}
FindPrimaryGPU(info);
return true;
}
} // namespace angle
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