Python win32event.CreateMutex() Examples

The following are 4 code examples of win32event.CreateMutex(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module win32event , or try the search function .
Example #1
Source File: Mutex.py    From Crypter with GNU General Public License v3.0 6 votes vote down vote up 
def __acquire(self):
        '''
        Attempts to acquire the mutex
        @raise MutexAlreadyAcquired
        '''

        mutex = win32event.CreateMutex(None, 1, self.MUTEX_NAME)
        if win32api.GetLastError() == winerror.ERROR_ALREADY_EXISTS:
            raise MutexAlreadyAcquired()

        return mutex


# ================================================================
# = MutexAlreadyAcquired Exception Class
# ===============================================================
Example #2
Source File: IPC.py    From BitTorrent with GNU General Public License v3.0 5 votes vote down vote up 
def create(self):
        obtain_mutex = 1
        mutex = win32event.CreateMutex(None, obtain_mutex, app_name)

        # prevent the PyHANDLE from going out of scope, ints are fine
        self.mutex = int(mutex)
        mutex.Detach()

        lasterror = win32api.GetLastError()
        
        if lasterror == winerror.ERROR_ALREADY_EXISTS:
            takeover = 0

            try:
                # if the mutex already exists, discover which port to connect to.
                # if something goes wrong with that, tell us to take over the
                # role of master
                takeover = self.discover_sic_socket()
            except:
                pass
            
            if not takeover:
                raise BTFailure(_("Global mutex already created."))

        self.master = 1

        # lazy free port code
        port_limit = 50000
        while self.port < port_limit:
            try:
                controlsocket = self.rawserver.create_serversocket(self.port,
                                                                   '127.0.0.1')
                self.controlsocket = controlsocket
                break
            except socket.error, e:
                self.port += 1
Example #3
Source File: IPC.py    From BitTorrent with GNU General Public License v3.0 5 votes vote down vote up 
def __init__(self):
        obtain_mutex = False
        self.mutex = win32event.CreateMutex(None, obtain_mutex, app_name)
        self.lasterror = win32api.GetLastError()
Example #4
Source File: singleinstance.py    From Email_My_PC with MIT License 5 votes vote down vote up 
def __init__(self):
        self.mutexname = "testmutex_{D0E858DF-985E-4907-B7FB-8D732C3FC3B9}"
        self.mutex = CreateMutex(None, False, self.mutexname)
        self.lasterror = GetLastError()