#ifndef QEMU_TSAN_H
#define QEMU_TSAN_H
/*
* tsan.h
*
* This file defines macros used to give ThreadSanitizer
* additional information to help suppress warnings.
* This is necessary since TSan does not provide a header file
* for these annotations. The standard way to include these
* is via the below macros.
*
* Annotation examples can be found here:
* https://github.com/llvm/llvm-project/tree/master/compiler-rt/test/tsan
* annotate_happens_before.cpp or ignore_race.cpp are good places to start.
*
* The full set of annotations can be found here in tsan_interface_ann.cpp.
* https://github.com/llvm/llvm-project/blob/master/compiler-rt/lib/tsan/rtl/
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#ifdef CONFIG_TSAN
/*
* Informs TSan of a happens before/after relationship.
*/
#define QEMU_TSAN_ANNOTATE_HAPPENS_BEFORE(addr) \
AnnotateHappensBefore(__FILE__, __LINE__, (void *)(addr))
#define QEMU_TSAN_ANNOTATE_HAPPENS_AFTER(addr) \
AnnotateHappensAfter(__FILE__, __LINE__, (void *)(addr))
/*
* Gives TSan more information about thread names it can report the
* name of the thread in the warning report.
*/
#define QEMU_TSAN_ANNOTATE_THREAD_NAME(name) \
AnnotateThreadName(__FILE__, __LINE__, (void *)(name))
/*
* Allows defining a region of code on which TSan will not record memory READS.
* This has the effect of disabling race detection for this section of code.
*/
#define QEMU_TSAN_ANNOTATE_IGNORE_READS_BEGIN() \
AnnotateIgnoreReadsBegin(__FILE__, __LINE__)
#define QEMU_TSAN_ANNOTATE_IGNORE_READS_END() \
AnnotateIgnoreReadsEnd(__FILE__, __LINE__)
/*
* Allows defining a region of code on which TSan will not record memory
* WRITES. This has the effect of disabling race detection for this
* section of code.
*/
#define QEMU_TSAN_ANNOTATE_IGNORE_WRITES_BEGIN() \
AnnotateIgnoreWritesBegin(__FILE__, __LINE__)
#define QEMU_TSAN_ANNOTATE_IGNORE_WRITES_END() \
AnnotateIgnoreWritesEnd(__FILE__, __LINE__)
#else
#define QEMU_TSAN_ANNOTATE_HAPPENS_BEFORE(addr)
#define QEMU_TSAN_ANNOTATE_HAPPENS_AFTER(addr)
#define QEMU_TSAN_ANNOTATE_THREAD_NAME(name)
#define QEMU_TSAN_ANNOTATE_IGNORE_READS_BEGIN()
#define QEMU_TSAN_ANNOTATE_IGNORE_READS_END()
#define QEMU_TSAN_ANNOTATE_IGNORE_WRITES_BEGIN()
#define QEMU_TSAN_ANNOTATE_IGNORE_WRITES_END()
#endif
void AnnotateHappensBefore(const char *f, int l, void *addr);
void AnnotateHappensAfter(const char *f, int l, void *addr);
void AnnotateThreadName(const char *f, int l, char *name);
void AnnotateIgnoreReadsBegin(const char *f, int l);
void AnnotateIgnoreReadsEnd(const char *f, int l);
void AnnotateIgnoreWritesBegin(const char *f, int l);
void AnnotateIgnoreWritesEnd(const char *f, int l);
#endif
