在目标C中获取图形卡信息

问题描述

我需要在我的应用程序中获取图形卡信息.我需要的信息与图形/显示:部分下的 * system_profiler SPDisplays * 命令显示的信息相同.我已经考虑过使用 sysctl() ，但是我无法在sysctl.h中找到合适的图形卡硬件选择器.

I need to get Graphics card information in my application. The information I need is the same as displayed by *system_profiler SPDisplays* command under the section Graphics/Displays:.I have already considered using sysctl(), but I am unable to find proper hardware selector for graphics card in sysctl.h

任何建议都非常有用.

推荐答案

摆弄IOKit之后，我设法获取了所需的信息.可以在此处(原始来源)及以下版本:

After fiddling with IOKit I have managed to fetch the required information. The code can be seen here (original source)and below:

- (void)displayGraphicsInfo
{
    // Get dictionary of all the PCI Devicces
    CFMutableDictionaryRef matchDict = IOServiceMatching("IOPCIDevice");

    // Create an iterator
    io_iterator_t iterator;

    if (IOServiceGetMatchingServices(kIOMasterPortDefault,matchDict,
                                     &iterator) == kIOReturnSuccess)
    {
        // Iterator for devices found
        io_registry_entry_t regEntry;

        while ((regEntry = IOIteratorNext(iterator))) {
            // Put this services object into a dictionary object.
            CFMutableDictionaryRef serviceDictionary;
            if (IORegistryEntryCreateCFProperties(regEntry,
                                                  &serviceDictionary,
                                                  kCFAllocatorDefault,
                                                  kNilOptions) != kIOReturnSuccess)
            {
                // Service dictionary creation failed.
                IOObjectRelease(regEntry);
                continue;
            }
            const void *GPUModel = CFDictionaryGetValue(serviceDictionary, @"model");

            if (GPUModel != nil) {
                if (CFGetTypeID(GPUModel) == CFDataGetTypeID()) {
                    // Create a string from the CFDataRef.
                    NSString *modelName = [[NSString alloc] initWithData:
                                           (NSData *)GPUModel encoding:NSASCIIStringEncoding];

                    NSLog(@"GPU Model: %@", modelName);
                    [modelName release];
                }
            }
            // Release the dictionary
            CFRelease(serviceDictionary);
            // Release the serviceObject
            IOObjectRelease(regEntry);
        }
        // Release the iterator
        IOObjectRelease(iterator);
    }
}

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