前言

分析代码

H:\webrtc-20210315\webrtc-20210315\webrtc\webrtc-checkout\src\api\proxy.h

// Helper macros to reduce code duplication.
#define PROXY_MAP_BOILERPLATE(c)                          \
  template <class INTERNAL_CLASS>                         \
  class c##ProxyWithInternal;                             \
  typedef c##ProxyWithInternal<c##Interface> c##Proxy;    \
  template <class INTERNAL_CLASS>                         \
  class c##ProxyWithInternal : public c##Interface {      \
   protected:                                             \
    typedef c##Interface C;                               \
                                                          \
   public:                                                \
    const INTERNAL_CLASS* internal() const { return c_; } \
    INTERNAL_CLASS* internal() { return c_; }

#define PROXY_METHOD0(r, method)                         \
  r method() override {                                  \
    MethodCall<C, r> call(c_, &C::method);               \
    return call.Marshal(RTC_FROM_HERE, primary_thread_); \
  }