[GD-Windows] Naming threads

[Javier A. <ja...@py...>]

Javier Arevalo <ja...@py...> wrote:

> We use the undocumented MSVC++ 6 trick for assigning names to
> threads (cool!) so we can identify those in the debugger

Some people asked me about this, so here's the code:

void BASE_SetThreadName(const char *pszName, unsigned threadId)
{
  // 10 chars maximum length of name.
  char buf[10];
  strncpy(buf, pszName, sizeof(buf));
  buf[sizeof(buf)-1] = '\0';

  enum { MS_VC_EXCEPTION = 0x406d1388 };

  struct THREADNAME_INFO
  {
      DWORD dwType;        // must be 0x1000
      LPCSTR pszName;       // pointer to name (in same addr space)
      DWORD dwThreadID;    // thread ID (-1 caller thread)
      DWORD dwFlags;       // reserved for future use, most be zero
  };

  THREADNAME_INFO info;
  info.dwType = 0x1000;
  info.pszName = pszName;
  info.dwThreadID = threadId? threadId : ::GetCurrentThreadId();
  info.dwFlags = 0;

  __try
  {
      RaiseException(MS_VC_EXCEPTION, 0, sizeof(info) / sizeof(DWORD),
(DWORD *)&info);
  }
  __except (EXCEPTION_CONTINUE_EXECUTION)
  {
  }
}

In the Debug | Threads dialog you can now see the names of the threads.

  Javier Arevalo
  Pyro Studios