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This file is part of drd, a data race detector.
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Copyright (C) 2006-2007 Bart Van Assche
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bart.vanassche@gmail.com
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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The GNU General Public License is contained in the file COPYING.
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// DRD vector clock implementation:
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// - One counter per thread.
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// - A vector clock is implemented as multiple pairs of (thread id, counter).
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// - Pairs are stored in an array sorted by thread id.
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// - Each time a thread performs an action that implies an ordering between
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// intra-thread events, the counter of that thread is incremented.
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// - Vector clocks are compared by comparing all counters of all threads.
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// - When a thread synchronization action is performed that guarantees that
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// new actions of the current thread are executed after the actions of the
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// other thread, the vector clock of the synchronization object and the
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// current thread are combined (by taking the component-wise maximum).
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// - A vector clock is incremented during actions such as
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// pthread_create(), pthread_mutex_unlock(), sem_post(). (Actions where
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// an inter-thread ordering "arrow" starts).
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#include "pub_tool_basics.h" // Addr, SizeT
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void vc_init(VectorClock* const vc,
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const VCElem* const vcelem,
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void vc_cleanup(VectorClock* const vc);
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void vc_copy(VectorClock* const new,
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const VectorClock* const rhs);
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void vc_increment(VectorClock* const vc, ThreadId const threadid);
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Bool vc_lte(const VectorClock* const vc1,
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const VectorClock* const vc2);
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Bool vc_ordered(const VectorClock* const vc1,
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const VectorClock* const vc2);
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void vc_min(VectorClock* const result,
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const VectorClock* const rhs);
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void vc_combine(VectorClock* const result,
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const VectorClock* const rhs);
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void vc_print(const VectorClock* const vc);
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void vc_snprint(Char* const str, Int const size,
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const VectorClock* const vc);
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void vc_check(const VectorClock* const vc);
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#endif /* __DRD_VC_H */
added
removed
exp-drd/drd_vc.h
