public static void HandleFutexAsync(FutexCompletionEntry c, int ret)
{
var current = c.thr;
c.Unlink();
current.ReturnFromCompletion(ret);
}
private static void WakeUp(FutexCompletionEntry entry, bool cancelTimeout, int ret)
{
if (cancelTimeout)
{
var p = entry.timeoutNode;
if (p != null)
{
p.Cancel();
}
}
/* Dequeue the futex in the completion queue */
Globals.CompletionQueue.Take(entry.thr.impl._value.thread._value);
entry.Unlink();
entry.thr.ReturnFromCompletion(ret);
}
public static void Initialize(ref Arch.BootParam param)
{
BootParam = param;
PageAllocator = new FreeListPageAllocator();
PageAllocator.Initialize(param.MainMemoryStart, param.MainMemorySize >> Arch.ArchDefinition.PageShift);
CompletionQueueAllocator = new FreeListPageAllocator();
CompletionQueueAllocator.Initialize(param.CompletionQueueBase, param.CompletionQueueSize >> Arch.ArchDefinition.PageShift);
Threads = ThreadList.CreateSentinal();
FutexLists = FutexCompletionEntry.CreateSentinal();
TimeoutQueue = new TimerQueue();
SecurityManager = new SecurityManager();
LinuxMemoryAllocator = new LinuxMemoryAllocator();
CapabilityManager = new CapabilityManager();
CompletionQueue = new CompletionQueue();
SecureFS.Initialize(Util.StringToByteArray("ExpressOS-security", false));
ReadBufferUnmarshaler.Initialize();
}
public static void Initialize(ref Arch.BootParam param)
{
BootParam = param;
PageAllocator = new FreeListPageAllocator();
PageAllocator.Initialize(param.MainMemoryStart, param.MainMemorySize >> Arch.ArchDefinition.PageShift);
CompletionQueueAllocator = new FreeListPageAllocator();
CompletionQueueAllocator.Initialize(param.CompletionQueueBase, param.CompletionQueueSize >> Arch.ArchDefinition.PageShift);
Threads = ThreadList.CreateSentinal();
FutexLists = FutexCompletionEntry.CreateSentinal();
TimeoutQueue = new TimerQueue();
SecurityManager = new SecurityManager();
LinuxMemoryAllocator = new LinuxMemoryAllocator();
CapabilityManager = new CapabilityManager();
CompletionQueue = new CompletionQueue();
SecureFS.Initialize(Util.StringToByteArray("ExpressOS-security", false));
ReadBufferUnmarshaler.Initialize();
}
private static int Wait(Thread current, ref Arch.ExceptionRegisters regs, UserPtr uaddr, int flags, int val, bool hasTimeout, timespec ts, uint bitset)
{
int old_val;
if (uaddr.Read(current, out old_val) != 0)
{
return(-ErrorCode.EFAULT);
}
if (old_val != val)
{
return(-ErrorCode.EWOULDBLOCK);
}
//Arch.Console.Write("wait: addr=");
//Arch.Console.Write(uaddr.Value.ToUInt32());
//Arch.Console.Write(" thr=");
//Arch.Console.Write(current.Tid);
//Arch.Console.WriteLine();
TimerQueueNode node;
var futex_entry = new FutexCompletionEntry(current, uaddr, bitset);
Globals.FutexLists.InsertAtTail(futex_entry);
if (hasTimeout)
{
node = Globals.TimeoutQueue.Enqueue(ts.ToMilliseconds(), current);
futex_entry.timeoutNode = node;
}
Globals.CompletionQueue.Enqueue(futex_entry);
current.SaveState(ref regs);
current.AsyncReturn = true;
return(0);
}
// Forward the futex request to Linux helper
private static int DoFutexShared(Thread current, ref Arch.ExceptionRegisters regs, UserPtr uaddr, int op, int val, UserPtr timeoutPtr, UserPtr uaddr2, uint val3)
{
// Some local test
var cmd = op & FUTEX_CMD_MASK;
timespec ts = new timespec();
bool hasTimeout = timeoutPtr != UserPtr.Zero;
if (hasTimeout && timeoutPtr.Read(current, out ts) != 0)
{
return(-ErrorCode.EFAULT);
}
if (cmd == FUTEX_WAIT || cmd == FUTEX_WAIT_BITSET)
{
int old_val;
if (uaddr.Read(current, out old_val) != 0)
{
return(-ErrorCode.EFAULT);
}
if (old_val != val)
{
return(-ErrorCode.EWOULDBLOCK);
}
var bitset = cmd == FUTEX_WAIT ? FUTEX_BITSET_MATCH_ANY : val3;
var shadowAddr = FindShadowAddr(current, uaddr);
if (shadowAddr == Pointer.Zero)
{
Arch.Console.WriteLine("FutexShared: Don't know how to deal with shared_wait");
return(0);
}
var futex_entry = new FutexCompletionEntry(current, uaddr, bitset);
Arch.IPCStubs.linux_sys_futex_wait(current.Parent.helperPid, current.impl._value.thread._value, op, shadowAddr, val, ts, bitset);
Globals.CompletionQueue.Enqueue(futex_entry);
current.SaveState(ref regs);
current.AsyncReturn = true;
return(0);
}
else if (cmd == FUTEX_WAKE || cmd == FUTEX_WAKE_BITSET)
{
var bitset = cmd == FUTEX_WAKE ? FUTEX_BITSET_MATCH_ANY : val3;
if (bitset == 0)
{
return(-ErrorCode.EINVAL);
}
var shadowAddr = FindShadowAddr(current, uaddr);
if (shadowAddr == Pointer.Zero)
{
Arch.Console.WriteLine("FutexShared: Don't know how to deal with shared_wake");
return(0);
}
var c = new BridgeCompletion(current, new ByteBufferRef());
Arch.IPCStubs.linux_sys_futex_wake(current.Parent.helperPid, current.impl._value.thread._value, op, shadowAddr, bitset);
Globals.CompletionQueue.Enqueue(c);
current.SaveState(ref regs);
current.AsyncReturn = true;
return(0);
}
return(0);
}
// Forward the futex request to Linux helper
private static int DoFutexShared(Thread current, ref Arch.ExceptionRegisters regs, UserPtr uaddr, int op, int val, UserPtr timeoutPtr, UserPtr uaddr2, uint val3)
{
// Some local test
var cmd = op & FUTEX_CMD_MASK;
timespec ts = new timespec();
bool hasTimeout = timeoutPtr != UserPtr.Zero;
if (hasTimeout && timeoutPtr.Read(current, out ts) != 0)
return -ErrorCode.EFAULT;
if (cmd == FUTEX_WAIT || cmd == FUTEX_WAIT_BITSET)
{
int old_val;
if (uaddr.Read(current, out old_val) != 0)
return -ErrorCode.EFAULT;
if (old_val != val)
return -ErrorCode.EWOULDBLOCK;
var bitset = cmd == FUTEX_WAIT ? FUTEX_BITSET_MATCH_ANY : val3;
var shadowAddr = FindShadowAddr(current, uaddr);
if (shadowAddr == Pointer.Zero)
{
Arch.Console.WriteLine("FutexShared: Don't know how to deal with shared_wait");
return 0;
}
var futex_entry = new FutexCompletionEntry(current, uaddr, bitset);
Arch.IPCStubs.linux_sys_futex_wait(current.Parent.helperPid, current.impl._value.thread._value, op, shadowAddr, val, ts, bitset);
Globals.CompletionQueue.Enqueue(futex_entry);
current.SaveState(ref regs);
current.AsyncReturn = true;
return 0;
}
else if (cmd == FUTEX_WAKE || cmd == FUTEX_WAKE_BITSET)
{
var bitset = cmd == FUTEX_WAKE ? FUTEX_BITSET_MATCH_ANY : val3;
if (bitset == 0)
return -ErrorCode.EINVAL;
var shadowAddr = FindShadowAddr(current, uaddr);
if (shadowAddr == Pointer.Zero)
{
Arch.Console.WriteLine("FutexShared: Don't know how to deal with shared_wake");
return 0;
}
var c = new BridgeCompletion(current, new ByteBufferRef());
Arch.IPCStubs.linux_sys_futex_wake(current.Parent.helperPid, current.impl._value.thread._value, op, shadowAddr, bitset);
Globals.CompletionQueue.Enqueue(c);
current.SaveState(ref regs);
current.AsyncReturn = true;
return 0;
}
return 0;
}
public static void HandleFutexAsync(FutexCompletionEntry c, int ret)
{
var current = c.thr;
c.Unlink();
current.ReturnFromCompletion(ret);
}
private static void WakeUp(FutexCompletionEntry entry, bool cancelTimeout, int ret)
{
if (cancelTimeout)
{
var p = entry.timeoutNode;
if (p != null)
p.Cancel();
}
/* Dequeue the futex in the completion queue */
Globals.CompletionQueue.Take(entry.thr.impl._value.thread._value);
entry.Unlink();
entry.thr.ReturnFromCompletion(ret);
}
private static int Wait(Thread current, ref Arch.ExceptionRegisters regs, UserPtr uaddr, int flags, int val, bool hasTimeout, timespec ts, uint bitset)
{
int old_val;
if (uaddr.Read(current, out old_val) != 0)
return -ErrorCode.EFAULT;
if (old_val != val)
return -ErrorCode.EWOULDBLOCK;
//Arch.Console.Write("wait: addr=");
//Arch.Console.Write(uaddr.Value.ToUInt32());
//Arch.Console.Write(" thr=");
//Arch.Console.Write(current.Tid);
//Arch.Console.WriteLine();
TimerQueueNode node;
var futex_entry = new FutexCompletionEntry(current, uaddr, bitset);
Globals.FutexLists.InsertAtTail(futex_entry);
if (hasTimeout)
{
node = Globals.TimeoutQueue.Enqueue(ts.ToMilliseconds(), current);
futex_entry.timeoutNode = node;
}
Globals.CompletionQueue.Enqueue(futex_entry);
current.SaveState(ref regs);
current.AsyncReturn = true;
return 0;
}
