696d846a56
libsanitizer/ 2015-10-20 Maxim Ostapenko <m.ostapenko@partner.samsung.com> * All source files: Merge from upstream r250806. * configure.ac (link_sanitizer_common): Add -lrt flag. * configure.tgt: Enable TSAN and LSAN for aarch64-linux targets. Set CXX_ABI_NEEDED=true for darwin. * asan/Makefile.am (asan_files): Add new files. (DEFS): Add DCAN_SANITIZE_UB=0 and remove unused and legacy DASAN_FLEXIBLE_MAPPING_AND_OFFSET=0. * asan/Makefile.in: Regenerate. * ubsan/Makefile.am (ubsan_files): Add new files. (DEFS): Add DCAN_SANITIZE_UB=1. (libubsan_la_LIBADD): Add -lc++abi if CXX_ABI_NEEDED is true. * ubsan/Makefile.in: Regenerate. * tsan/Makefile.am (tsan_files): Add new files. (DEFS): Add DCAN_SANITIZE_UB=0. * tsan/Makefile.in: Regenerate. * sanitizer_common/Makefile.am (sanitizer_common_files): Add new files. * sanitizer_common/Makefile.in: Regenerate. * asan/libtool-version: Bump the libasan SONAME. From-SVN: r229111
103 lines
3.0 KiB
C++
103 lines
3.0 KiB
C++
//===-- tsan_sync.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_SYNC_H
|
|
#define TSAN_SYNC_H
|
|
|
|
#include "sanitizer_common/sanitizer_atomic.h"
|
|
#include "sanitizer_common/sanitizer_common.h"
|
|
#include "sanitizer_common/sanitizer_deadlock_detector_interface.h"
|
|
#include "tsan_defs.h"
|
|
#include "tsan_clock.h"
|
|
#include "tsan_mutex.h"
|
|
#include "tsan_dense_alloc.h"
|
|
|
|
namespace __tsan {
|
|
|
|
struct SyncVar {
|
|
SyncVar();
|
|
|
|
static const int kInvalidTid = -1;
|
|
|
|
uptr addr; // overwritten by DenseSlabAlloc freelist
|
|
Mutex mtx;
|
|
u64 uid; // Globally unique id.
|
|
u32 creation_stack_id;
|
|
int owner_tid; // Set only by exclusive owners.
|
|
u64 last_lock;
|
|
int recursion;
|
|
bool is_rw;
|
|
bool is_recursive;
|
|
bool is_broken;
|
|
bool is_linker_init;
|
|
u32 next; // in MetaMap
|
|
DDMutex dd;
|
|
SyncClock read_clock; // Used for rw mutexes only.
|
|
// The clock is placed last, so that it is situated on a different cache line
|
|
// with the mtx. This reduces contention for hot sync objects.
|
|
SyncClock clock;
|
|
|
|
void Init(ThreadState *thr, uptr pc, uptr addr, u64 uid);
|
|
void Reset(ThreadState *thr);
|
|
|
|
u64 GetId() const {
|
|
// 47 lsb is addr, then 14 bits is low part of uid, then 3 zero bits.
|
|
return GetLsb((u64)addr | (uid << 47), 61);
|
|
}
|
|
bool CheckId(u64 uid) const {
|
|
CHECK_EQ(uid, GetLsb(uid, 14));
|
|
return GetLsb(this->uid, 14) == uid;
|
|
}
|
|
static uptr SplitId(u64 id, u64 *uid) {
|
|
*uid = id >> 47;
|
|
return (uptr)GetLsb(id, 47);
|
|
}
|
|
};
|
|
|
|
/* MetaMap allows to map arbitrary user pointers onto various descriptors.
|
|
Currently it maps pointers to heap block descriptors and sync var descs.
|
|
It uses 1/2 direct shadow, see tsan_platform.h.
|
|
*/
|
|
class MetaMap {
|
|
public:
|
|
MetaMap();
|
|
|
|
void AllocBlock(ThreadState *thr, uptr pc, uptr p, uptr sz);
|
|
uptr FreeBlock(ThreadState *thr, uptr pc, uptr p);
|
|
bool FreeRange(ThreadState *thr, uptr pc, uptr p, uptr sz);
|
|
void ResetRange(ThreadState *thr, uptr pc, uptr p, uptr sz);
|
|
MBlock* GetBlock(uptr p);
|
|
|
|
SyncVar* GetOrCreateAndLock(ThreadState *thr, uptr pc,
|
|
uptr addr, bool write_lock);
|
|
SyncVar* GetIfExistsAndLock(uptr addr);
|
|
|
|
void MoveMemory(uptr src, uptr dst, uptr sz);
|
|
|
|
void OnThreadIdle(ThreadState *thr);
|
|
|
|
private:
|
|
static const u32 kFlagMask = 3u << 30;
|
|
static const u32 kFlagBlock = 1u << 30;
|
|
static const u32 kFlagSync = 2u << 30;
|
|
typedef DenseSlabAlloc<MBlock, 1<<16, 1<<12> BlockAlloc;
|
|
typedef DenseSlabAlloc<SyncVar, 1<<16, 1<<10> SyncAlloc;
|
|
BlockAlloc block_alloc_;
|
|
SyncAlloc sync_alloc_;
|
|
atomic_uint64_t uid_gen_;
|
|
|
|
SyncVar* GetAndLock(ThreadState *thr, uptr pc, uptr addr, bool write_lock,
|
|
bool create);
|
|
};
|
|
|
|
} // namespace __tsan
|
|
|
|
#endif // TSAN_SYNC_H
|