Esempio n. 1
0
        public override void Lock(bool nonBlock = false)
        {
            if (LockedCount == 0)
            {
                IO.MakeDirIfNotExists(Env.UnixMutantDir);

                UnixApi.Permissions perm = UnixApi.Permissions.S_IRUSR | UnixApi.Permissions.S_IWUSR | UnixApi.Permissions.S_IRGRP | UnixApi.Permissions.S_IWGRP | UnixApi.Permissions.S_IROTH | UnixApi.Permissions.S_IWOTH;

                IntPtr fd = UnixApi.Open(Filename, UnixApi.OpenFlags.O_CREAT | UnixApi.OpenFlags.O_CLOEXEC, (int)perm);
                if (fd.ToInt64() < 0)
                {
                    throw new IOException("Open failed.");
                }

                if (UnixApi.FLock(fd, UnixApi.LockOperations.LOCK_EX | (nonBlock ? UnixApi.LockOperations.LOCK_NB : 0)) == -1)
                {
                    throw new IOException("FLock failed.");
                }

                this.FileHandle = fd;

                LockedCount++;
            }
        }
Esempio n. 2
0
        public static void DeleteUnusedMutantFiles()
        {
            if (Env.IsUnix == false)
            {
                return;
            }

            try
            {
                string[] fileFullPathList = Directory.GetFiles(Env.UnixMutantDir);

                foreach (string fileFullPath in fileFullPathList)
                {
                    try
                    {
                        if (fileFullPath.EndsWith(Extension, StringComparison.OrdinalIgnoreCase))
                        {
                            UnixApi.Permissions perm = UnixApi.Permissions.S_IRUSR | UnixApi.Permissions.S_IWUSR | UnixApi.Permissions.S_IRGRP | UnixApi.Permissions.S_IWGRP | UnixApi.Permissions.S_IROTH | UnixApi.Permissions.S_IWOTH;

                            bool okToDelete = false;

                            IntPtr fd = UnixApi.Open(fileFullPath, UnixApi.OpenFlags.O_CREAT | UnixApi.OpenFlags.O_CLOEXEC, (int)perm);

                            if (fd.ToInt64() >= 0)
                            {
                                try
                                {
                                    if (UnixApi.FLock(fd, UnixApi.LockOperations.LOCK_EX | UnixApi.LockOperations.LOCK_NB) != -1)
                                    {
                                        okToDelete = true;
                                    }
                                }
                                finally
                                {
                                    try
                                    {
                                        UnixApi.FLock(fd, UnixApi.LockOperations.LOCK_UN);
                                    }
                                    catch { }

                                    try
                                    {
                                        UnixApi.Close(fd);
                                    }
                                    catch { }
                                }
                            }

                            if (okToDelete)
                            {
                                try
                                {
                                    File.Delete(fileFullPath);
                                }
                                catch { }
                            }
                        }
                    }
                    catch { }
                }
            }
            catch { }
        }