C++ (Cpp) LLUV_HCALLBACK_L Examples

Example #1

File: lluv_process.c Project: yinlei/lua-lluv

static void lluv_on_process_exit(uv_process_t* arg, int64_t exit_status, int term_signal){
  lluv_handle_t *handle = lluv_handle_byptr((uv_handle_t*)arg);
  lua_State *L = LLUV_HCALLBACK_L(handle);

  LLUV_CHECK_LOOP_CB_INVARIANT(L);

  if(!IS_(handle, OPEN)){
    lluv_handle_unlock(L, handle, LLUV_LOCK_EXIT);

    LLUV_CHECK_LOOP_CB_INVARIANT(L);
    return;
  }

  lua_rawgeti(L, LLUV_LUA_REGISTRY, LLUV_EXIT_CB(handle));
  lluv_handle_pushself(L, handle);
  lluv_handle_unlock(L, handle, LLUV_LOCK_EXIT);

  if(lua_isnil(L, -2)){
    lua_pop(L, 2);

    LLUV_CHECK_LOOP_CB_INVARIANT(L);
    return;
  }

  lua_pushnil(L);
  lutil_pushint64(L, exit_status);
  lutil_pushint64(L, term_signal);

  LLUV_HANDLE_CALL_CB(L, handle, 4);

  LLUV_CHECK_LOOP_CB_INVARIANT(L);
}

Example #2

File: lluv_udp.c Project: kidaa/lua-lluv

static void lluv_on_udp_recv_cb(uv_udp_t *arg, ssize_t nread, const uv_buf_t* buf, const struct sockaddr* addr, unsigned flags){
  lluv_handle_t *handle = lluv_handle_byptr((uv_handle_t*)arg);
  lua_State *L = LLUV_HCALLBACK_L(handle);

  LLUV_CHECK_LOOP_CB_INVARIANT(L);

  if((nread == 0) && (addr == NULL)){
    /*
    ** The receive callback will be called with 
    ** nread == 0 and addr == NULL when there is 
    ** nothing to read
    */
    lluv_free_buffer((uv_handle_t*)arg, buf);
    return;
  }

  lua_rawgeti(L, LLUV_LUA_REGISTRY, LLUV_READ_CB(handle));
  assert(!lua_isnil(L, -1));

  lluv_handle_pushself(L, handle);

  if(nread >= 0){
    assert(addr);
    lua_pushnil(L);
    lua_pushlstring(L, buf->base, nread);
    lluv_free_buffer((uv_handle_t*)arg, buf);
  }
  else{
    lluv_free_buffer((uv_handle_t*)arg, buf);

    /* The callee is responsible for stopping closing the stream 
     *  when an error happens by calling uv_read_stop() or uv_close().
     *  Trying to read from the stream again is undefined.
     */
    uv_udp_recv_stop(arg);

    luaL_unref(L, LLUV_LUA_REGISTRY, LLUV_READ_CB(handle));
    LLUV_READ_CB(handle) = LUA_NOREF;

    lluv_error_create(L, LLUV_ERR_UV, (uv_errno_t)nread, NULL);
    lua_pushnil(L);

    lluv_handle_unlock(L, handle, LLUV_LOCK_READ);
  }
  lua_pushinteger(L, flags);

  LLUV_HANDLE_CALL_CB(L, handle, 4 + lluv_push_addr(L, (const struct sockaddr_storage*)addr));

  LLUV_CHECK_LOOP_CB_INVARIANT(L);
}

Example #3

File: lluv_signal.c Project: yinlei/lua-lluv

static void lluv_on_signal_start(uv_signal_t *arg, int signum){
  lluv_handle_t *handle = lluv_handle_byptr((uv_handle_t*)arg);
  lua_State *L = LLUV_HCALLBACK_L(handle);

  LLUV_CHECK_LOOP_CB_INVARIANT(L);

  lua_rawgeti(L, LLUV_LUA_REGISTRY, LLUV_START_CB(handle));
  assert(!lua_isnil(L, -1)); /* is callble */

  lluv_handle_pushself(L, handle);
  lua_pushinteger(L, signum);
  LLUV_HANDLE_CALL_CB(L, handle, 2);

  LLUV_CHECK_LOOP_CB_INVARIANT(L);
}