当执行 ps -ef在我的机器上，我发现了一个非常奇怪/特殊的命令行参数 chrome :
501 536 493 0 二11上午 ?? 13:11.48 /Applications/Google Chrome.app/Contents/Versions/69.0.3497.100/Google Chrome Helper.app/Contents/MacOS/Google Chrome Helper --type=gpu-process --field-trial-handle=3535656472344341962,3817030915272013891,131072 --gpu-preferences=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 --service-request-channel-token=17030867567105907743
出于好奇，我找到了 source of
chromium ，这看起来很正常:namespace gl {
// On dual-GPU systems, expresses a preference for using the integrated
// or discrete GPU. On systems that have dual-GPU support (see
// GpuDataManagerImpl), resource sharing only works between
// contexts that are created with the same GPU preference.
//
// This API will likely need to be adjusted as the functionality is
// implemented on more operating systems.
enum GpuPreference {
GpuPreferenceNone,
PreferIntegratedGpu,
PreferDiscreteGpu,
GpuPreferenceLast = PreferDiscreteGpu
};
} // namespace gl
那么，这个参数(
KAAAA.... )是模糊的还是 GPU 的某种编码？姓名？为什么会有这么奇怪的编码？
最佳答案
每当您看到包含大量 AAAA 的编码时在其中，您可以打赌它是二进制的 Base64 编码，其中包含许多空值。
>>> a=b'KAAAAAAAAAQAAAAAAAAAAAGAAAAAAAAAAAAAIAAAAAAAAADgBAAAmAAAAM=='
>>> base64.b64decode(a).hex()
'2800000000000004000000000000000001800000000000000000002000000000000000e004000098000000'
(更一般地说，任何同时使用大写和小写字母的编码都很可能是 Base64。例如，与 SHA1 的十六进制相比，通常在 Base64 中给出 SHA256。)
这对应这个接口(interface):https://cs.chromium.org/chromium/src/gpu/ipc/common/gpu_preferences.mojom
线路格式似乎没有大量记录，所以如果你想解释这个值，你最好检查一下 Chrome 树并构建绑定(bind)生成器。 https://chromium.googlesource.com/chromium/src/+/master/mojo/public/tools/bindings/README.md
关于google-chrome - Chrome的奇怪 `gpu-preferences`，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/52677555/