public LockHandle Lock(ILockable[] lockables, AccessType accessType, LockingMode mode)
{
lock (this) {
int count = 0;
if ((accessType & AccessType.Read) != 0)
{
count += lockables.Length;
}
if ((accessType & AccessType.Write) != 0)
{
count += lockables.Length;
}
var handle = new LockHandle(count);
if ((accessType & AccessType.Read) != 0)
{
AddToHandle(handle, lockables, AccessType.Read, mode);
}
if ((accessType & AccessType.Write) != 0)
{
AddToHandle(handle, lockables, AccessType.Write, mode);
}
return(handle);
}
}
public LockHandle Lock(ILockable[] lockables, AccessType accessType, LockingMode mode)
{
lock (this) {
var handle = new LockHandle(this);
for (int i = lockables.Length - 1; i >= 0; --i)
{
var lockable = lockables[i];
var queue = GetQueueFor(lockable);
if ((accessType & AccessType.Read) != 0)
{
handle.AddLock(queue.Lock(mode, AccessType.Read));
}
if ((accessType & AccessType.Write) != 0)
{
handle.AddLock(queue.Lock(mode, AccessType.Write));
}
}
openHandles.Add(handle);
return(handle);
}
}
public LockHandle Lock(ILockable[] toWrite, ILockable[] toRead, LockingMode mode)
{
// Set up the local constants.
int lockCount = toRead.Length + toWrite.Length;
LockHandle handle = new LockHandle(lockCount);
lock (this) {
Lock @lock;
LockingQueue queue;
// Add Read and Write locks to cache and to the handle.
for (int i = toWrite.Length - 1; i >= 0; --i) {
var toWriteLock = toWrite[i];
queue = GetQueueFor(toWriteLock);
// slightly confusing: this will add Lock to given table queue
@lock = new Lock(queue, mode, AccessType.Write);
@lock.Acquire();
handle.AddLock(@lock);
}
for (int i = toRead.Length - 1; i >= 0; --i) {
var toReadLock = toRead[i];
queue = GetQueueFor(toReadLock);
// slightly confusing: this will add Lock to given table queue
@lock = new Lock(queue, mode, AccessType.Read);
@lock.Acquire();
handle.AddLock(@lock);
}
}
return handle;
}
public LockHandle Lock(ILockable[] toWrite, ILockable[] toRead, LockingMode mode)
{
lock (this) {
int lockCount = toRead.Length + toWrite.Length;
LockHandle handle = new LockHandle(lockCount);
AddToHandle(handle, toWrite, AccessType.Write, mode);
AddToHandle(handle, toRead, AccessType.Read, mode);
return(handle);
}
}
public void Release(LockHandle handle)
{
lock (this) {
if (openHandles != null)
{
var index = openHandles.IndexOf(handle);
if (index >= 0)
{
openHandles.RemoveAt(index);
}
}
handle.ReleaseLocks();
}
}
private void AddToHandle(LockHandle handle, ILockable[] lockables, AccessType accessType, LockingMode mode)
{
if (lockables == null)
{
return;
}
for (int i = lockables.Length - 1; i >= 0; --i)
{
var lockable = lockables[i];
var queue = GetQueueFor(lockable);
handle.AddLock(queue.NewLock(mode, accessType));
}
}
private void AddToHandle(LockHandle handle, ILockable[] lockables, AccessType accessType, LockingMode mode)
{
if (lockables == null)
{
return;
}
for (int i = lockables.Length - 1; i >= 0; --i)
{
var lockable = lockables[i];
var queue = GetQueueFor(lockable);
// slightly confusing: this will add Lock to given table queue
var @lock = new Lock(queue, mode, accessType);
@lock.Acquire();
handle.AddLock(@lock);
}
}
public LockHandle Lock(ILockable[] lockables, AccessType accessType, LockingMode mode)
{
lock (this) {
int count = 0;
if ((accessType & AccessType.Read) != 0)
count += lockables.Length;
if ((accessType & AccessType.Write) != 0)
count += lockables.Length;
var handle = new LockHandle(count);
if ((accessType & AccessType.Read) != 0)
AddToHandle(handle, lockables, AccessType.Read, mode);
if ((accessType & AccessType.Write) != 0)
AddToHandle(handle, lockables, AccessType.Write, mode);
return handle;
}
}
public void Unlock(LockHandle handle)
{
lock (this) {
handle.Release();
}
}
private void AddToHandle(LockHandle handle, ILockable[] lockables, AccessType accessType, LockingMode mode)
{
if (lockables == null)
return;
for (int i = lockables.Length - 1; i >= 0; --i) {
var lockable = lockables[i];
var queue = GetQueueFor(lockable);
handle.AddLock(queue.NewLock(mode, accessType));
}
}
public void Unlock(LockHandle handle)
{
lock (this) {
if (openHandles != null) {
var index = openHandles.IndexOf(handle);
if (index >= 0)
openHandles.RemoveAt(index);
}
handle.Release();
}
}
public void Unlock(LockHandle handle)
{
lock (this) {
handle.Release();
}
}
public LockHandle Lock(ILockable[] toWrite, ILockable[] toRead, LockingMode mode)
{
lock (this) {
int lockCount = toRead.Length + toWrite.Length;
LockHandle handle = new LockHandle(lockCount);
AddToHandle(handle, toWrite, AccessType.Write, mode);
AddToHandle(handle, toRead, AccessType.Read, mode);
return handle;
}
}
private void AddToHandle(LockHandle handle, ILockable[] lockables, AccessType accessType, LockingMode mode)
{
if (lockables == null)
return;
for (int i = lockables.Length - 1; i >= 0; --i) {
var lockable = lockables[i];
var queue = GetQueueFor(lockable);
// slightly confusing: this will add Lock to given table queue
var @lock = new Lock(queue, mode, accessType);
@lock.Acquire();
handle.AddLock(@lock);
}
}
