cancellation_token.hpp

#pragma once
 
#include "global.hpp"
 
namespace Cvb
{
 
  CVB_BEGIN_INLINE_NS
 
  template <>
  inline HandleGuard<CancellationToken>::HandleGuard(void *handle) noexcept
      : HandleGuard<CancellationToken>(handle, [](void *handle) { CVB_CALL_CAPI(ReleaseObject(handle)); })
  {
  }


  class CancellationToken
  {
    friend class CancellationTokenSource;
    struct PrivateTag
    {
    };
 
  public:
    CancellationToken(HandleGuard<CancellationToken> &&guard, PrivateTag) noexcept
        : handle_(std::move(guard))
    {
    }


    void *Handle() const noexcept
    {
      return handle_.Handle();
    }
    void *Handle() const noexcept {…}


    bool IsCanceled() const noexcept
    {
      CExports::cvbbool_t status = false;
      CVB_CALL_CAPI(CVCCancellationTokenIsCanceled(Handle(), status));
      // suppress VC waring
      return status != 0;
    }
    bool IsCanceled() const noexcept {…}
 
  private:
    HandleGuard<CancellationToken> handle_;
  };
  class CancellationToken {…};
 
  CVB_END_INLINE_NS
 
}  // namespace Cvb