Add DRD as an experimental tool.  Bart Van Assche is the maintainer.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@7211 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/exp-drd/drd_cond.h b/exp-drd/drd_cond.h
new file mode 100644
index 0000000..2a3b945
--- /dev/null
+++ b/exp-drd/drd_cond.h
@@ -0,0 +1,58 @@
+/*
+  This file is part of drd, a data race detector.
+
+  Copyright (C) 2006-2007 Bart Van Assche
+  bart.vanassche@gmail.com
+
+  This program is free software; you can redistribute it and/or
+  modify it under the terms of the GNU General Public License as
+  published by the Free Software Foundation; either version 2 of the
+  License, or (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+  02111-1307, USA.
+
+  The GNU General Public License is contained in the file COPYING.
+*/
+
+
+// Condition variable state information: mutex specified in pthread_cond_wait()
+// call.
+
+
+#ifndef __COND_H
+#define __COND_H
+
+
+#include "pub_tool_basics.h"      // Addr, SizeT
+#include "drd_vc.h"
+#include "drd_thread.h"           // DrdThreadId
+
+
+struct cond_info
+{
+  Addr cond;  // Pointer to client condition variable.
+  int  waiter_count;
+  Addr mutex; // Client mutex specified in pthread_cond_wait() call, and null
+              // if no client threads are currently waiting on this cond.var.
+};
+
+void cond_set_trace(const Bool trace_cond);
+void cond_init(const Addr cond);
+void cond_destroy(struct cond_info* const p);
+struct cond_info* cond_get(Addr const mutex);
+int cond_pre_wait(const Addr cond, const Addr mutex);
+int cond_post_wait(const Addr cond);
+void cond_pre_signal(Addr const cond);
+void cond_pre_broadcast(Addr const cond);
+void cond_stop_using_mem(const Addr a1, const Addr a2);
+
+
+#endif /* __COND_H */