Python uselect.POLLOUT属性代码示例

# 需要导入模块: import uselect [as 别名]
# 或者: from uselect import POLLOUT [as 别名]
def run():
    global success
    ok = True
    try:
        while ok:
            res = poller.ipoll(10)
            for sock, ev in res:
                if ev & select.POLLOUT:
                    r = sock.send(b'0123456789\n')
                    print(ev, r)  
                    # On ESP8266 if another task closes the socket the poll object
                    # never triggers. uasyncio expects it to trigger with POLLHUP or
                    # (POLLOUT & POLLERR or POLLOUT & POLLHUP)
                    # If server fails gets OSError on both platforms.
                else:  # But on Unix socket closure produces ev == 32
                    print('Terminating event:', ev)  # What is 32??
                    ok = False
                    break
                await asyncio.sleep(1)
            await asyncio.sleep(0)
    except OSError:
        print('Got OSError')  # Happens on ESP8266 if server fails
    success = True  # Detected socket closure or error by OSError or event 

# 需要导入模块: import uselect [as 别名]
# 或者: from uselect import POLLOUT [as 别名]
def add_writer(self, sock, cb, *args):
        if DEBUG and __debug__:
            log.debug("add_writer%s", (sock, cb, args))
        if args:
            self.poller.register(sock, select.POLLOUT)
            self.objmap[id(sock)] = (cb, args)
        else:
            self.poller.register(sock, select.POLLOUT)
            self.objmap[id(sock)] = cb 

# 需要导入模块: import uselect [as 别名]
# 或者: from uselect import POLLOUT [as 别名]
def add_writer(self, sock, cb, *args):
        if DEBUG and __debug__:
            log.debug("add_writer%s", (sock, cb, args))
        # HACK Should read
        # self._register(sock, select.POLLOUT)
        # Temporary workround for https://github.com/micropython/micropython/issues/5172
        # The following is not compliant with POSIX or with the docs
        self._register(sock, select.POLLOUT | select.POLLHUP | select.POLLERR)  # t35tB0t add HUP and ERR to force LWIP revents
        if args:
            self.wrobjmap[id(sock)] = (cb, args)
        else:
            self.wrobjmap[id(sock)] = cb 

# 需要导入模块: import uselect [as 别名]
# 或者: from uselect import POLLOUT [as 别名]
def remove_writer(self, sock):
        if DEBUG and __debug__:
            log.debug("remove_writer(%s)", sock)
        self._unregister(sock, self.wrobjmap, select.POLLOUT) 

# 需要导入模块: import uselect [as 别名]
# 或者: from uselect import POLLOUT [as 别名]
def wait(self, delay):
        if DEBUG and __debug__:
            log.debug("poll.wait(%d)", delay)
        # We need one-shot behavior (second arg of 1 to .poll())
        res = self.poller.ipoll(delay, 1)
        #log.debug("poll result: %s", res)
        for sock, ev in res:
            if ev & select.POLLOUT:
                cb = self.wrobjmap[id(sock)]
                if cb is None:
                    continue  # Not yet ready.
                # Invalidate objmap: can get adverse timing in fast_io whereby add_writer
                # is not called soon enough. Ignore poll events occurring before we are
                # ready to handle them.
                self.wrobjmap[id(sock)] = None
                if ev & (select.POLLHUP | select.POLLERR):
                    # These events are returned even if not requested, and
                    # are sticky, i.e. will be returned again and again.
                    # If the caller doesn't do proper error handling and
                    # unregister this sock, we'll busy-loop on it, so we
                    # as well can unregister it now "just in case".
                    self.remove_writer(sock)
                if DEBUG and __debug__:
                    log.debug("Calling IO callback: %r", cb)
                if isinstance(cb, tuple):
                    cb[0](*cb[1])
                else:
                    prev = cb.pend_throw(None)  # Enable task to run.
                    #if isinstance(prev, Exception):
                        #print('Put back exception')
                        #cb.pend_throw(prev)
                    self._call_io(cb)  # Put coro onto runq (or ioq if one exists)
            if ev & select.POLLIN:
                cb = self.rdobjmap[id(sock)]
                if cb is None:
                    continue
                self.rdobjmap[id(sock)] = None
                if ev & (select.POLLHUP | select.POLLERR):
                    # These events are returned even if not requested, and
                    # are sticky, i.e. will be returned again and again.
                    # If the caller doesn't do proper error handling and
                    # unregister this sock, we'll busy-loop on it, so we
                    # as well can unregister it now "just in case".
                    self.remove_reader(sock)
                if DEBUG and __debug__:
                    log.debug("Calling IO callback: %r", cb)
                if isinstance(cb, tuple):
                    cb[0](*cb[1])
                else:
                    prev = cb.pend_throw(None)  # Enable task to run.
                    #if isinstance(prev, Exception):
                        #cb.pend_throw(prev)
                        #print('Put back exception')
                    self._call_io(cb)