Removing xe_thread_t.

src/poly/threading_win.cc

@@ -27,6 +27,36 @@ uint32_t current_thread_id() {
   return static_cast<uint32_t>(GetCurrentThreadId());
 }
 
+// http://msdn.microsoft.com/en-us/library/xcb2z8hs.aspx
+#pragma pack(push, 8)
+struct THREADNAME_INFO {
+  DWORD dwType;      // Must be 0x1000.
+  LPCSTR szName;     // Pointer to name (in user addr space).
+  DWORD dwThreadID;  // Thread ID (-1=caller thread).
+  DWORD dwFlags;     // Reserved for future use, must be zero.
+};
+#pragma pack(pop)
+
+void set_name(DWORD thread_id, const std::string& name) {
+  if (!IsDebuggerPresent()) {
+    return;
+  }
+  THREADNAME_INFO info;
+  info.dwType = 0x1000;
+  info.szName = name.c_str();
+  info.dwThreadID = thread_id;
+  info.dwFlags = 0;
+  __try {
+    RaiseException(0x406D1388, 0, sizeof(info) / sizeof(ULONG_PTR),
+                   reinterpret_cast<ULONG_PTR*>(&info));
+  }
+  __except(EXCEPTION_EXECUTE_HANDLER) {}
+}
+
+void set_name(const std::string& name) {
+  set_name(static_cast<DWORD>(-1), name);
+}
+
 void Yield() { SwitchToThread(); }
 
 void Sleep(std::chrono::microseconds duration) {