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is 1, but Owner still holds the current thread id, even though another thread has just acquired a lock, but still haven't updated the owner thread ID. We avoid this problem by setting Owner to nil before unlocking the mutex. And in InitMutex/DoneMutex, we store the creator thread ID in a different field - Creator, instead of Owner.
34 lines
1.2 KiB
PHP
34 lines
1.2 KiB
PHP
{
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This file is part of the Free Pascal run time library.
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Copyright (c) 2013 by Free Pascal development team
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This file implements all the base types and limits required
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for a minimal POSIX compliant subset required to port the compiler
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to a new OS.
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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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{Platform specific information}
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type
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THandle = LongInt;
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TThreadID = Pointer;
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TOSTimestamp = LongInt;
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PRTLCriticalSection = ^TRTLCriticalSection;
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TRTLCriticalSection = record
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Locked: LongInt; // integer so we can use wait32.
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Count: LongInt; // Number of times locked.
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Waiters : LongInt; // Number of waiters
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Kind : LongInt; // Kind of mutex, Equals Ord(TMutexKind)
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Owner : TThreadID; // Owner thread (who holds the lock)
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Creator : TThreadID; // Creator thread
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Destroying : Boolean; // Set when notifying that we're destroying the mutex.
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end;
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