gcc/libsanitizer/tsan/tsan_sync.h
Jakub Jelinek 5d3805fca3 ubsan.c (ubsan_expand_null_ifn): Use _v1 suffixed type mismatch builtins...
* ubsan.c (ubsan_expand_null_ifn): Use _v1 suffixed type mismatch
	builtins, store max (log2 (align), 0) into uchar field instead of
	align into uptr field.
	(ubsan_expand_objsize_ifn): Use _v1 suffixed type mismatch builtins,
	store uchar 0 field instead of uptr 0 field.
	(instrument_nonnull_return): Use _v1 suffixed nonnull return builtin,
	instead of passing one address of struct with 2 locations pass
	two addresses of structs with 1 location each.
	* sanitizer.def (BUILT_IN_UBSAN_HANDLE_TYPE_MISMATCH,
	BUILT_IN_UBSAN_HANDLE_TYPE_MISMATCH_ABORT,
	BUILT_IN_UBSAN_HANDLE_NONNULL_RETURN,
	BUILT_IN_UBSAN_HANDLE_NONNULL_RETURN_ABORT): Removed.
	(BUILT_IN_UBSAN_HANDLE_TYPE_MISMATCH_V1,
	BUILT_IN_UBSAN_HANDLE_TYPE_MISMATCH_V1_ABORT,
	BUILT_IN_UBSAN_HANDLE_NONNULL_RETURN_V1,
	BUILT_IN_UBSAN_HANDLE_NONNULL_RETURN_V1_ABORT): New builtins.

	* c-c++-common/ubsan/float-cast-overflow-1.c: Drop value keyword
	from expected output regexps.
	* c-c++-common/ubsan/float-cast-overflow-2.c: Likewise.
	* c-c++-common/ubsan/float-cast-overflow-3.c: Likewise.
	* c-c++-common/ubsan/float-cast-overflow-4.c: Likewise.
	* c-c++-common/ubsan/float-cast-overflow-5.c: Likewise.
	* c-c++-common/ubsan/float-cast-overflow-6.c: Likewise.
	* c-c++-common/ubsan/float-cast-overflow-8.c: Likewise.
	* c-c++-common/ubsan/float-cast-overflow-9.c: Likewise.
	* c-c++-common/ubsan/float-cast-overflow-10.c: Likewise.
	* g++.dg/ubsan/float-cast-overflow-bf.C: Likewise.
	* gcc.dg/ubsan/float-cast-overflow-bf.c: Likewise.
	* g++.dg/asan/default-options-1.C (__asan_default_options): Add
	used attribute.
	* g++.dg/asan/asan_test.C: Run with ASAN_OPTIONS=handle_segv=2
	in the environment.

	* All source files: Merge from upstream 315899.
        * asan/Makefile.am (nodist_saninclude_HEADERS): Add
	include/sanitizer/tsan_interface.h.
        * asan/libtool-version: Bump the libasan SONAME.
	* lsan/Makefile.am (sanitizer_lsan_files): Add lsan_common_mac.cc.
	(lsan_files): Add lsan_linux.cc, lsan_mac.cc and lsan_malloc_mac.cc.
        * sanitizer_common/Makefile.am (sanitizer_common_files): Add
	sancov_flags.cc, sanitizer_allocator_checks.cc,
	sanitizer_coverage_libcdep_new.cc, sanitizer_errno.cc,
	sanitizer_file.cc, sanitizer_mac_libcdep.cc and
	sanitizer_stoptheworld_mac.cc.  Remove sanitizer_coverage_libcdep.cc
	and sanitizer_coverage_mapping_libcdep.cc.
        * tsan/Makefile.am (tsan_files): Add tsan_external.cc.
	* ubsan/Makefile.am (DEFS): Add -DUBSAN_CAN_USE_CXXABI=1.
	(ubsan_files): Add ubsan_init_standalone.cc and
	ubsan_signals_standalone.cc.
	* ubsan/libtool-version: Bump the libubsan SONAME.
        * asan/Makefile.in: Regenerate.
        * lsan/Makefile.in: Regenerate.
        * sanitizer_common/Makefile.in: Regenerate.
        * tsan/Makefile.in: Regenerate.
	* ubsan/Makefile.in: Regenerate.

From-SVN: r253887
2017-10-19 13:23:59 +02:00

143 lines
4.7 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 {
// These need to match __tsan_mutex_* flags defined in tsan_interface.h.
// See documentation there as well.
enum MutexFlags {
MutexFlagLinkerInit = 1 << 0, // __tsan_mutex_linker_init
MutexFlagWriteReentrant = 1 << 1, // __tsan_mutex_write_reentrant
MutexFlagReadReentrant = 1 << 2, // __tsan_mutex_read_reentrant
MutexFlagReadLock = 1 << 3, // __tsan_mutex_read_lock
MutexFlagTryLock = 1 << 4, // __tsan_mutex_try_lock
MutexFlagTryLockFailed = 1 << 5, // __tsan_mutex_try_lock_failed
MutexFlagRecursiveLock = 1 << 6, // __tsan_mutex_recursive_lock
MutexFlagRecursiveUnlock = 1 << 7, // __tsan_mutex_recursive_unlock
// The following flags are runtime private.
// Mutex API misuse was detected, so don't report any more.
MutexFlagBroken = 1 << 30,
// We did not intercept pre lock event, so handle it on post lock.
MutexFlagDoPreLockOnPostLock = 1 << 29,
// Must list all mutex creation flags.
MutexCreationFlagMask = MutexFlagLinkerInit |
MutexFlagWriteReentrant |
MutexFlagReadReentrant,
};
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;
atomic_uint32_t flags;
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(Processor *proc);
u64 GetId() const {
// 48 lsb is addr, then 14 bits is low part of uid, then 2 zero bits.
return GetLsb((u64)addr | (uid << 48), 60);
}
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 >> 48;
return (uptr)GetLsb(id, 48);
}
bool IsFlagSet(u32 f) const {
return atomic_load_relaxed(&flags) & f;
}
void SetFlags(u32 f) {
atomic_store_relaxed(&flags, atomic_load_relaxed(&flags) | f);
}
void UpdateFlags(u32 flagz) {
// Filter out operation flags.
if (!(flagz & MutexCreationFlagMask))
return;
u32 current = atomic_load_relaxed(&flags);
if (current & MutexCreationFlagMask)
return;
// Note: this can be called from MutexPostReadLock which holds only read
// lock on the SyncVar.
atomic_store_relaxed(&flags, current | (flagz & MutexCreationFlagMask));
}
};
/* 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(Processor *proc, uptr p);
bool FreeRange(Processor *proc, uptr p, uptr sz);
void ResetRange(Processor *proc, uptr p, uptr sz);
MBlock* GetBlock(uptr p);
SyncVar* GetOrCreateAndLock(ThreadState *thr, uptr pc,
uptr addr, bool write_lock);
SyncVar* GetIfExistsAndLock(uptr addr, bool write_lock);
void MoveMemory(uptr src, uptr dst, uptr sz);
void OnProcIdle(Processor *proc);
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