tsan: New directory.

libsanitizer/
	* tsan: New directory. Import tsan runtime from llvm.
	* configure.ac: Add 64 bits tsan build.
	* Makefile.am: Likewise.
	* configure: Regenerated.
	* Makefile.in: Likewise.

From-SVN: r193737

1 files changed, 73 insertions, 0 deletions

diff --git a/libsanitizer/tsan/tsan_trace.h b/libsanitizer/tsan/tsan_trace.h
new file mode 100644
index 00000000000..69233a61bab
--- /dev/null
+++ b/libsanitizer/tsan/tsan_trace.h
@@ -0,0 +1,73 @@
+//===-- tsan_trace.h --------------------------------------------*- C++ -*-===//
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of ThreadSanitizer (TSan), a race detector.
+//
+//===----------------------------------------------------------------------===//
+#ifndef TSAN_TRACE_H
+#define TSAN_TRACE_H
+
+#include "tsan_defs.h"
+#include "tsan_mutex.h"
+#include "tsan_sync.h"
+
+namespace __tsan {
+
+#ifndef TSAN_HISTORY_SIZE  // in kibitraces
+#define TSAN_HISTORY_SIZE 128
+#endif
+
+const int kTracePartSize = 16 * 1024;
+const int kTraceParts = TSAN_HISTORY_SIZE * 1024 / kTracePartSize;
+const int kTraceSize = kTracePartSize * kTraceParts;
+
+// Must fit into 3 bits.
+enum EventType {
+  EventTypeMop,
+  EventTypeFuncEnter,
+  EventTypeFuncExit,
+  EventTypeLock,
+  EventTypeUnlock,
+  EventTypeRLock,
+  EventTypeRUnlock
+};
+
+// Represents a thread event (from most significant bit):
+// u64 typ  : 3;   // EventType.
+// u64 addr : 61;  // Associated pc.
+typedef u64 Event;
+
+struct TraceHeader {
+  StackTrace stack0;  // Start stack for the trace.
+  u64        epoch0;  // Start epoch for the trace.
+#ifndef TSAN_GO
+  uptr       stack0buf[kTraceStackSize];
+#endif
+
+  TraceHeader()
+#ifndef TSAN_GO
+      : stack0(stack0buf, kTraceStackSize)
+#else
+      : stack0()
+#endif
+      , epoch0() {
+  }
+};
+
+struct Trace {
+  Event events[kTraceSize];
+  TraceHeader headers[kTraceParts];
+  Mutex mtx;
+
+  Trace()
+    : mtx(MutexTypeTrace, StatMtxTrace) {
+  }
+};
+
+}  // namespace __tsan
+
+#endif  // TSAN_TRACE_H