comparison mercurial/util.py @ 2024:6328445b0e71

Fixes to testpid() for Windows.

Handle processes that no longer exist and processes that belong to another user.

Enables the lock breaking changes from d314a89fa4f1 and subsequently "fixes" the left over locks reported in bug 112.

2023:3bdd3bf17cfa

        pf = output_line[14:]
        if pf[0] == '`':
            pf = pf[1:-1] # Remove the quotes
        return pf

    try: # ActivePython can create hard links using win32file module
        import win32api, win32con, win32file

        def os_link(src, dst): # NB will only succeed on NTFS
            win32file.CreateHardLink(dst, src)

        def nlinks(pathname):
            """Return number of hardlinks for the given file."""

                return res[7]
            except:
                return os.stat(pathname).st_nlink

        def testpid(pid):
            '''return False if pid is dead, True if running or not known'''
            try:
                win32api.OpenProcess(win32con.PROCESS_QUERY_INFORMATION,
                                     False, pid)
            except:
                return True

    except ImportError:
        def testpid(pid):
            '''return False if pid dead, True if running or not known'''
            return True

2024:6328445b0e71

        pf = output_line[14:]
        if pf[0] == '`':
            pf = pf[1:-1] # Remove the quotes
        return pf

    try: # Mark Hammond's win32all package allows better functionality on Windows
        import win32api, win32con, win32file, pywintypes

        # create hard links using win32file module
        def os_link(src, dst): # NB will only succeed on NTFS
            win32file.CreateHardLink(dst, src)

        def nlinks(pathname):
            """Return number of hardlinks for the given file."""

                return res[7]
            except:
                return os.stat(pathname).st_nlink

        def testpid(pid):
            '''return True if pid is still running or unable to determine, False otherwise'''
            try:
                handle = win32api.OpenProcess(win32con.PROCESS_QUERY_INFORMATION, False, pid) 
                if handle:
                    status = win32process.GetExitCodeProcess(handle)
                    if status == win32con.STILL_ACTIVE:
                        return True
                    else:
                        return False
            except pywintypes.error, details:
                if details[0] == 87: # ERROR_INVALID_PARAMETER
                    return False
            return True

    except ImportError:
        def testpid(pid):
            '''return False if pid dead, True if running or not known'''
            return True