bde4c9c773
The new storage (MetaMap) is based on direct shadow (instead of a hashmap + per-block lists). This solves a number of problems: - eliminates quadratic behaviour in SyncTab::GetAndLock (https://code.google.com/p/thread-sanitizer/issues/detail?id=26) - eliminates contention in SyncTab - eliminates contention in internal allocator during allocation of sync objects - removes a bunch of ad-hoc code in java interface - reduces java shadow from 2x to 1/2x - allows to memorize heap block meta info for Java and Go - allows to cleanup sync object meta info for Go - which in turn enabled deadlock detector for Go llvm-svn: 209810
55 lines
1.5 KiB
C++
55 lines
1.5 KiB
C++
//===-- tsan_stack_trace.h --------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is a part of ThreadSanitizer (TSan), a race detector.
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//
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//===----------------------------------------------------------------------===//
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#ifndef TSAN_STACK_TRACE_H
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#define TSAN_STACK_TRACE_H
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//#include "sanitizer_common/sanitizer_atomic.h"
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//#include "sanitizer_common/sanitizer_common.h"
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//#include "sanitizer_common/sanitizer_deadlock_detector_interface.h"
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#include "tsan_defs.h"
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//#include "tsan_clock.h"
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//#include "tsan_mutex.h"
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//#include "tsan_dense_alloc.h"
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namespace __tsan {
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class StackTrace {
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public:
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StackTrace();
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// Initialized the object in "static mode",
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// in this mode it never calls malloc/free but uses the provided buffer.
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StackTrace(uptr *buf, uptr cnt);
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~StackTrace();
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void Reset();
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void Init(const uptr *pcs, uptr cnt);
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void ObtainCurrent(ThreadState *thr, uptr toppc);
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bool IsEmpty() const;
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uptr Size() const;
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uptr Get(uptr i) const;
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const uptr *Begin() const;
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void CopyFrom(const StackTrace& other);
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private:
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uptr n_;
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uptr *s_;
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const uptr c_;
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StackTrace(const StackTrace&);
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void operator = (const StackTrace&);
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};
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} // namespace __tsan
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#endif // TSAN_STACK_TRACE_H
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