public override void Lock(bool nonBlock = false)
{
if (LockedCount == 0)
{
IO.MakeDirIfNotExists(Env.UnixMutantDir);
UnixPermissions perm = UnixPermissions.S_IRUSR | UnixPermissions.S_IWUSR | UnixPermissions.S_IRGRP | UnixPermissions.S_IWGRP | UnixPermissions.S_IROTH | UnixPermissions.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.");
}
try
{
if (UnixApi.FLock(fd, UnixApi.LockOperations.LOCK_EX | (nonBlock ? UnixApi.LockOperations.LOCK_NB : 0)) == -1)
{
throw new IOException("FLock failed.");
}
}
catch
{
UnixApi.Close(fd);
throw;
}
this.FileHandle = fd;
LockedCount++;
}
}
public void StopService(int stopTimeout)
{
HiveData.SyncWithStorage(HiveSyncFlags.LoadFromFile, true);
long pid = HiveData.ManagedData.Pid;
if (pid != 0)
{
if (Env.IsWindows == false)
{
if (UnixApi.Kill((int)pid, UnixApi.Signals.SIGTERM) == 0)
{
Con.WriteLine($"Shutting down the daemon \"{Name}\" (pid = {pid}) ...");
if (UnixApi.WaitProcessExit((int)pid, stopTimeout) == false)
{
Con.WriteLine($"Shutting down the daemon \"{Name}\" (pid = {pid}) timed out.");
throw new ApplicationException($"Shutting down the daemon \"{Name}\" (pid = {pid}) timed out.");
}
}
else
{
Con.WriteLine($"The daemon \"{Name}\" is not running.");
}
}
else
{
if (ManualResetEvent.TryOpenExisting(HiveData.ManagedData.EventName !, out EventWaitHandle? eventHandle))
{
try
{
Con.WriteLine($"Stopping the daemon \"{Name}\" (pid = {pid}) ...");
eventHandle.Set();
if (Win32ApiUtil.WaitProcessExit((int)pid, stopTimeout) == false)
{
Con.WriteLine($"Stopping the daemon \"{Name}\" (pid = {pid}) timed out.");
throw new ApplicationException($"Stopping the daemon \"{Name}\" (pid = {pid}) timed out.");
}
}
finally
{
eventHandle._DisposeSafe();
}
}
else
{
Con.WriteLine($"The daemon \"{Name}\" is not running.");
}
}
public override void Unlock()
{
if (LockedCount <= 0)
{
throw new ApplicationException("locked_count <= 0");
}
if (LockedCount == 1)
{
try
{
UnixApi.FLock(this.FileHandle, UnixApi.LockOperations.LOCK_UN);
}
catch { }
UnixApi.Close(this.FileHandle);
this.FileHandle = IntPtr.Zero;
}
LockedCount--;
}
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))
{
UnixPermissions perm = UnixPermissions.S_IRUSR | UnixPermissions.S_IWUSR | UnixPermissions.S_IRGRP | UnixPermissions.S_IWGRP | UnixPermissions.S_IROTH | UnixPermissions.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 { }
}
