mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-11-04 12:39:38 +01:00
0c3afc0cf4
sem_open/sem_close for Darwin (doesn't have sem_init/sem_destroy)
+ implementation of cSemaphore* based on pipes (for potential future
systems that don't have either sem* routines)
+ test for basicrtlevent
* fixed datarace whereby a TThread could be started, run and exit before
TThread.AfterConstructor had been called (Mantis 6693, all platforms)
* throw EThread exceptions in TThread.create if something during creating
the tthread goes wrong (*nix)
* don't crash in TThread.Destroy if the TThread throws an exception before
it was fully initialised (*nix)
* changed order of operations in TThread.Destroy so it doesn't perform
invalid thread operations in some edge cases (*nix)
* fixed usage of sem_wait/sem_trywait (can be interrupted) in Semaphore
and RTLEvent implementations
* fixed erroneous waiting for threads after they had already exited via
pthread_detach/pthread_exit
* fixed several memory leaks in case of thread intialisation errors
(*nix)
* unified tthread.inc for all Unices
git-svn-id: trunk@5662 -
166 lines
8.0 KiB
PHP
166 lines
8.0 KiB
PHP
{
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This file is part of the Free Pascal Run time library.
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Copyright (c) 2000 by the Free Pascal development team
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This file contains the OS indenpendend declartions for multi
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threading support in FPC
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See the File COPYING.FPC, included in this distribution,
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for details about the copyright.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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**********************************************************************}
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const
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{ including 16384 margin for stackchecking }
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DefaultStackSize = 32768;
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type
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PEventState = pointer;
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PRTLEvent = pointer; // Windows=thandle, other=pointer to record.
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TThreadFunc = function(parameter : pointer) : ptrint;
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trtlmethod = procedure of object;
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// Function prototypes for TThreadManager Record.
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TBeginThreadHandler = Function (sa : Pointer;stacksize : PtrUInt; ThreadFunction : tthreadfunc;p : pointer;creationFlags : dword; var ThreadId : TThreadID) : TThreadID;
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TEndThreadHandler = Procedure (ExitCode : DWord);
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// Used for Suspend/Resume/Kill
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TThreadHandler = Function (threadHandle : TThreadID) : dword;
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TThreadSwitchHandler = Procedure;
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TWaitForThreadTerminateHandler = Function (threadHandle : TThreadID; TimeoutMs : longint) : dword; {0=no timeout}
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TThreadSetPriorityHandler = Function (threadHandle : TThreadID; Prio: longint): boolean; {-15..+15, 0=normal}
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TThreadGetPriorityHandler = Function (threadHandle : TThreadID): longint;
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TGetCurrentThreadIdHandler = Function : TThreadID;
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TCriticalSectionHandler = Procedure (var cs);
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TInitThreadVarHandler = Procedure(var offset : dword;size : dword);
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TRelocateThreadVarHandler = Function(offset : dword) : pointer;
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TAllocateThreadVarsHandler = Procedure;
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TReleaseThreadVarsHandler = Procedure;
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TBasicEventHandler = procedure(state:peventstate);
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TBasicEventWaitForHandler = function (timeout:cardinal;state:peventstate):longint;
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TBasicEventCreateHandler = function (EventAttributes :Pointer; AManualReset,InitialState : Boolean;const Name:ansistring):pEventState;
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TRTLEventHandler = procedure(AEvent:PRTLEvent);
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TRTLEventHandlerTimeout = procedure(AEvent:PRTLEvent;timeout : longint);
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TRTLCreateEventHandler = function:PRTLEvent;
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TRTLEventSyncHandler = procedure (m:trtlmethod;p:tprocedure);
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// semaphores stuff
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TSempahoreInitHandler = function: Pointer;
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TSemaphoreDestroyHandler = procedure (const sem: Pointer);
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TSemaphorePostHandler = procedure (const sem: Pointer);
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TSemaphoreWaitHandler = procedure (const sem: Pointer);
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// TThreadManager interface.
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TThreadManager = Record
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InitManager : Function : Boolean;
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DoneManager : Function : Boolean;
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BeginThread : TBeginThreadHandler;
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EndThread : TEndThreadHandler;
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SuspendThread : TThreadHandler;
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ResumeThread : TThreadHandler;
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KillThread : TThreadHandler;
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ThreadSwitch : TThreadSwitchHandler;
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WaitForThreadTerminate : TWaitForThreadTerminateHandler;
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ThreadSetPriority : TThreadSetPriorityHandler;
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ThreadGetPriority : TThreadGetPriorityHandler;
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GetCurrentThreadId : TGetCurrentThreadIdHandler;
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InitCriticalSection : TCriticalSectionHandler;
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DoneCriticalSection : TCriticalSectionHandler;
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EnterCriticalSection : TCriticalSectionHandler;
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LeaveCriticalSection : TCriticalSectionHandler;
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InitThreadVar : TInitThreadVarHandler;
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RelocateThreadVar : TRelocateThreadVarHandler;
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AllocateThreadVars : TAllocateThreadVarsHandler;
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ReleaseThreadVars : TReleaseThreadVarsHandler;
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BasicEventCreate : TBasicEventCreateHandler; // left in for a while.
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BasicEventDestroy : TBasicEventHandler; // we might need BasicEvent
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BasicEventResetEvent : TBasicEventHandler; // for a real TEvent
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BasicEventSetEvent : TBasicEventHandler;
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BasiceventWaitFOr : TBasicEventWaitForHandler;
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RTLEventCreate : TRTLCreateEventHandler;
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RTLEventDestroy : TRTLEventHandler;
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RTLEventSetEvent : TRTLEventHandler;
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RTLEventResetEvent : TRTLEventHandler;
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RTLEventStartWait : TRTLEventHandler;
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RTLEventWaitFor : TRTLEventHandler;
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RTLEventSync : TRTLEventSyncHandler;
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RTLEventWaitForTimeout : TRTLEventHandlerTimeout;
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// semaphores stuff
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SemaphoreInit : TSempahoreInitHandler;
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SemaphoreDestroy : TSemaphoreDestroyHandler;
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SemaphorePost : TSemaphorePostHandler;
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SemaphoreWait : TSemaphoreWaitHandler;
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end;
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{*****************************************************************************
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Thread Handler routines
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*****************************************************************************}
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Function GetThreadManager(Var TM : TThreadManager) : Boolean;
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Function SetThreadManager(Const NewTM : TThreadManager; Var OldTM : TThreadManager) : Boolean;
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Function SetThreadManager(Const NewTM : TThreadManager) : Boolean;
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{$ifndef DISABLE_NO_THREAD_MANAGER}
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Procedure SetNoThreadManager;
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{$endif DISABLE_NO_THREAD_MANAGER}
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// Needs to be exported, so the manager can call it.
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procedure InitThreadVars(RelocProc : Pointer);
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procedure InitThread(stklen:SizeUInt);
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{*****************************************************************************
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Multithread Handling
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*****************************************************************************}
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function BeginThread(sa : Pointer;stacksize : SizeUInt;
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ThreadFunction : tthreadfunc;p : pointer;creationFlags : dword;
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var ThreadId : TThreadID) : TThreadID;
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{ add some simplfied forms which make lifer easier and porting }
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{ to other OSes too ... }
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function BeginThread(ThreadFunction : tthreadfunc) : TThreadID;
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function BeginThread(ThreadFunction : tthreadfunc;p : pointer) : TThreadID;
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function BeginThread(ThreadFunction : tthreadfunc;p : pointer; var ThreadId : TThreadID) : TThreadID;
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function BeginThread(ThreadFunction : tthreadfunc;p : pointer;
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var ThreadId : TThreadID; const stacksize: SizeUInt) : TThreadID;
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procedure EndThread(ExitCode : DWord);
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procedure EndThread;
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{some thread support functions}
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procedure FlushThread;
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function SuspendThread (threadHandle : TThreadID) : dword;
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function ResumeThread (threadHandle : TThreadID) : dword;
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procedure ThreadSwitch; {give time to other threads}
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function KillThread (threadHandle : TThreadID) : dword;
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function WaitForThreadTerminate (threadHandle : TThreadID; TimeoutMs : longint) : dword; {0=no timeout}
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function ThreadSetPriority (threadHandle : TThreadID; Prio: longint): boolean; {-15..+15, 0=normal}
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function ThreadGetPriority (threadHandle : TThreadID): longint;
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function GetCurrentThreadId : TThreadID;
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{ this allows to do a lot of things in MT safe way }
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{ it is also used to make the heap management }
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{ thread safe }
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procedure InitCriticalSection(var cs : TRTLCriticalSection);
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procedure DoneCriticalsection(var cs : TRTLCriticalSection);
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procedure EnterCriticalsection(var cs : TRTLCriticalSection);
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procedure LeaveCriticalsection(var cs : TRTLCriticalSection);
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function BasicEventCreate(EventAttributes : Pointer; AManualReset,InitialState : Boolean;const Name : ansistring):pEventState;
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procedure basiceventdestroy(state:peventstate);
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procedure basiceventResetEvent(state:peventstate);
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procedure basiceventSetEvent(state:peventstate);
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function basiceventWaitFor(Timeout : Cardinal;state:peventstate) : longint;
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function RTLEventCreate :PRTLEvent;
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procedure RTLeventdestroy(state:pRTLEvent);
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procedure RTLeventSetEvent(state:pRTLEvent);
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procedure RTLeventResetEvent(state:pRTLEvent);
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procedure RTLeventStartWait(state:pRTLEvent);
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procedure RTLeventWaitFor(state:pRTLEvent);
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procedure RTLeventWaitFor(state:pRTLEvent;timeout : longint);
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procedure RTLeventsync(m:trtlmethod;p:tprocedure);
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