[46] | 1 | ' Classes/System/Threading/WaitHandle.ab
|
---|
| 2 |
|
---|
| 3 | #ifndef __SYSTEM_THREADING_WAITHANDLE_AB__
|
---|
| 4 | #define __SYSTEM_THREADING_WAITHANDLE_AB__
|
---|
| 5 |
|
---|
[258] | 6 | 'Namespace System
|
---|
| 7 | 'Namespace Threading
|
---|
| 8 |
|
---|
| 9 | Namespace Detail
|
---|
| 10 | TypeDef PFNSignalObjectAndWait = *Function(hObjectToSignal As HANDLE, hObjectToWaitOn As HANDLE, dwMilliseconds As DWord, bAlertable As DWord) As DWord
|
---|
| 11 | End Namespace
|
---|
| 12 |
|
---|
[46] | 13 | Class WaitHandle
|
---|
| 14 | Public
|
---|
[77] | 15 | ' Properties
|
---|
| 16 | ' Const Function SafeWaitHandle() As SafeWaitHandle
|
---|
| 17 | ' Sub SafeWaitHandle(h As SafeWaitHandle)
|
---|
[46] | 18 |
|
---|
| 19 | Const Virtual Function Handle() As HANDLE
|
---|
| 20 | Return h
|
---|
| 21 | End Function
|
---|
| 22 |
|
---|
| 23 | Virtual Sub Handle(newHandle As HANDLE)
|
---|
| 24 | h = newHandle
|
---|
| 25 | End Sub
|
---|
| 26 |
|
---|
[77] | 27 | ' Methods
|
---|
| 28 |
|
---|
| 29 | Virtual Sub ~WaitHandle()
|
---|
[119] | 30 | CloseHandle(h)
|
---|
[77] | 31 | End Sub
|
---|
| 32 |
|
---|
[46] | 33 | Virtual Sub Close()
|
---|
| 34 | CloseHandle(h)
|
---|
| 35 | End Sub
|
---|
| 36 |
|
---|
[47] | 37 | Function WaitOne() As BOOL
|
---|
| 38 | Return WaitOne(INFINITE, FALSE)
|
---|
| 39 | End Function
|
---|
[46] | 40 |
|
---|
[47] | 41 | Function WaitOne(millisecondsTimeout As Long, exitContext As BOOL) As BOOL
|
---|
| 42 | Return WaitHandle.AfterWait(WaitForSingleObject(h, millisecondsTimeout As DWord), 1)
|
---|
| 43 | End Function
|
---|
[46] | 44 |
|
---|
[47] | 45 | ' Function WaitOne(timeout As TimeSpan, exitContext As BOOL) As BOOL
|
---|
[46] | 46 | /*
|
---|
[47] | 47 | Static Function WaitAll(count As DWord, handles As *HANDLE) As BOOL
|
---|
| 48 | Return WaitAll(count, handles, INFINITE, FALSE)
|
---|
| 49 | End Function
|
---|
[46] | 50 |
|
---|
[47] | 51 | Static Function WaitAll(count As DWord, handles As *HANDLE, millisecondsTimeout As Long, exitContext As BOOL) As BOOL
|
---|
| 52 | Return WaitHandle.AfterWait(WaitForMultipleObjects(count, handles, TRUE, millisecondsTimeout), count)
|
---|
| 53 | End Function
|
---|
[46] | 54 |
|
---|
[47] | 55 | ' Static Function WaitAll(timeout As TimeSpan, handles As *HANDLE, millisecondsTimeout As Long, exitContext As BOOL) As BOOL
|
---|
[46] | 56 |
|
---|
[47] | 57 | Static Function WaitAny(count As DWord, handles As *HANDLE) As BOOL
|
---|
| 58 | Return WaitAny(count, handles, INFINITE, FALSE)
|
---|
| 59 | End Function
|
---|
[46] | 60 |
|
---|
[47] | 61 | Static Function WaitAny(count As DWord, handles As *HANDLE, millisecondsTimeout As Long, exitContext As BOOL) As BOOL
|
---|
| 62 | Return WaitHandle.AfterWait(WaitForMultipleObjects(count, handles, FALSE, millisecondsTimeout), count)
|
---|
| 63 | End Function
|
---|
[46] | 64 |
|
---|
[47] | 65 | ' Static Function WaitAny(timeout As TimeSpan, handles As *HANDLE, millisecondsTimeout As Long, exitContext As BOOL) As BOOL
|
---|
[46] | 66 | */
|
---|
[47] | 67 | Static Function SignalAndWait(ByRef toSignal As WaitHandle, ByRef toWaitOn As WaitHandle) As BOOL
|
---|
| 68 | Return SignalAndWait(toSignal, toWaitOn, INFINITE, FALSE)
|
---|
| 69 | End Function
|
---|
[46] | 70 |
|
---|
[258] | 71 | Public
|
---|
[47] | 72 | Static Function SignalAndWait(ByRef toSignal As WaitHandle, ByRef toWaitOn As WaitHandle, millisecondsTimeout As Long, exitContext As BOOL) As BOOL
|
---|
[258] | 73 | Dim pSignalObjectAndWait = GetProcAddress(GetModuleHandle("Kernel32.dll"), "SignalObjectAndWait") As Detail.PFNSignalObjectAndWait
|
---|
[46] | 74 | If pSignalObjectAndWait = 0 Then
|
---|
| 75 | ' PlatformNotSupportedException
|
---|
| 76 | Debug
|
---|
[237] | 77 | ExitThread(-1)
|
---|
[46] | 78 | End If
|
---|
[237] | 79 | Return WaitHandle.AfterWait(pSignalObjectAndWait(toSignal.Handle, toWaitOn.Handle, millisecondsTimeout As DWord, FALSE), 1)
|
---|
[47] | 80 | End Function
|
---|
[46] | 81 |
|
---|
[47] | 82 | ' Static Function SignalAndWait(ByRef toSignal As WaitHandle, ByRef toWaitOn As WaitHandle, timeout As TimeSpan, exitContext As BOOL) As BOOL
|
---|
[46] | 83 |
|
---|
| 84 | ' Protected
|
---|
| 85 | Sub WaitHandle()
|
---|
| 86 | End Sub
|
---|
| 87 |
|
---|
| 88 | Protected
|
---|
| 89 | Static Const InvalidHandle = INVALID_HANDLE_VALUE As HANDLE
|
---|
| 90 |
|
---|
| 91 | Private
|
---|
| 92 | h As HANDLE
|
---|
| 93 |
|
---|
[47] | 94 | Static Function AfterWait(ret As DWord, n As DWord) As BOOL
|
---|
[46] | 95 | Select Case ret
|
---|
| 96 | Case WAIT_TIMEOUT
|
---|
[47] | 97 | Return FALSE
|
---|
[46] | 98 | Case WAIT_ABANDONED
|
---|
| 99 | ' Throw AbandonedMutexException
|
---|
| 100 | Debug
|
---|
| 101 | ExitThread(0)
|
---|
| 102 | 'Case WAIT_FAILED
|
---|
| 103 | Case Else
|
---|
[47] | 104 | If WAIT_OBJECT_0 <= ret And ret < WAIT_OBJECT_0 + n Then
|
---|
| 105 | Return TRUE
|
---|
| 106 | End If
|
---|
[46] | 107 | ' ObjectDisposedException?
|
---|
| 108 | Debug
|
---|
| 109 | ExitThread(0)
|
---|
| 110 | End Select
|
---|
[58] | 111 | End Function
|
---|
[46] | 112 | End Class
|
---|
| 113 |
|
---|
[258] | 114 | 'End Namespace 'Threading
|
---|
| 115 | 'End Namespace 'System
|
---|
| 116 |
|
---|
[46] | 117 | #endif '__SYSTEM_THREADING_WAITHANDLE_AB__
|
---|