LLVM  13.0.0git
Macros | Functions | Variables
ThreadSanitizer.cpp File Reference
#include "llvm/Transforms/Instrumentation/ThreadSanitizer.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/Optional.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Analysis/CaptureTracking.h"
#include "llvm/Analysis/TargetLibraryInfo.h"
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Metadata.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Type.h"
#include "llvm/InitializePasses.h"
#include "llvm/ProfileData/InstrProf.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Transforms/Instrumentation.h"
#include "llvm/Transforms/Utils/BasicBlockUtils.h"
#include "llvm/Transforms/Utils/EscapeEnumerator.h"
#include "llvm/Transforms/Utils/Local.h"
#include "llvm/Transforms/Utils/ModuleUtils.h"
Include dependency graph for ThreadSanitizer.cpp:

Go to the source code of this file.

Macros

#define DEBUG_TYPE   "tsan"
 

Functions

 STATISTIC (NumInstrumentedReads, "Number of instrumented reads")
 
 STATISTIC (NumInstrumentedWrites, "Number of instrumented writes")
 
 STATISTIC (NumOmittedReadsBeforeWrite, "Number of reads ignored due to following writes")
 
 STATISTIC (NumAccessesWithBadSize, "Number of accesses with bad size")
 
 STATISTIC (NumInstrumentedVtableWrites, "Number of vtable ptr writes")
 
 STATISTIC (NumInstrumentedVtableReads, "Number of vtable ptr reads")
 
 STATISTIC (NumOmittedReadsFromConstantGlobals, "Number of reads from constant globals")
 
 STATISTIC (NumOmittedReadsFromVtable, "Number of vtable reads")
 
 STATISTIC (NumOmittedNonCaptured, "Number of accesses ignored due to capturing")
 
 INITIALIZE_PASS_BEGIN (ThreadSanitizerLegacyPass, "tsan", "ThreadSanitizer: detects data races.", false, false) INITIALIZE_PASS_END(ThreadSanitizerLegacyPass
 
static bool isVtableAccess (Instruction *I)
 
static bool shouldInstrumentReadWriteFromAddress (const Module *M, Value *Addr)
 
static bool isAtomic (Instruction *I)
 
static ConstantIntcreateOrdering (IRBuilder<> *IRB, AtomicOrdering ord)
 

Variables

static cl::opt< bool > ClInstrumentMemoryAccesses ("tsan-instrument-memory-accesses", cl::init(true), cl::desc("Instrument memory accesses"), cl::Hidden)
 
static cl::opt< bool > ClInstrumentFuncEntryExit ("tsan-instrument-func-entry-exit", cl::init(true), cl::desc("Instrument function entry and exit"), cl::Hidden)
 
static cl::opt< bool > ClHandleCxxExceptions ("tsan-handle-cxx-exceptions", cl::init(true), cl::desc("Handle C++ exceptions (insert cleanup blocks for unwinding)"), cl::Hidden)
 
static cl::opt< bool > ClInstrumentAtomics ("tsan-instrument-atomics", cl::init(true), cl::desc("Instrument atomics"), cl::Hidden)
 
static cl::opt< bool > ClInstrumentMemIntrinsics ("tsan-instrument-memintrinsics", cl::init(true), cl::desc("Instrument memintrinsics (memset/memcpy/memmove)"), cl::Hidden)
 
static cl::opt< bool > ClDistinguishVolatile ("tsan-distinguish-volatile", cl::init(false), cl::desc("Emit special instrumentation for accesses to volatiles"), cl::Hidden)
 
static cl::opt< bool > ClInstrumentReadBeforeWrite ("tsan-instrument-read-before-write", cl::init(false), cl::desc("Do not eliminate read instrumentation for read-before-writes"), cl::Hidden)
 
static cl::opt< bool > ClCompoundReadBeforeWrite ("tsan-compound-read-before-write", cl::init(false), cl::desc("Emit special compound instrumentation for reads-before-writes"), cl::Hidden)
 
const char kTsanModuleCtorName [] = "tsan.module_ctor"
 
const char kTsanInitName [] = "__tsan_init"
 
 tsan
 
ThreadSanitizer __pad0__
 
ThreadSanitizer false
 

Macro Definition Documentation

◆ DEBUG_TYPE

#define DEBUG_TYPE   "tsan"

Definition at line 54 of file ThreadSanitizer.cpp.

Function Documentation

◆ createOrdering()

static ConstantInt* createOrdering ( IRBuilder<> *  IRB,
AtomicOrdering  ord 
)
static

◆ INITIALIZE_PASS_BEGIN()

INITIALIZE_PASS_BEGIN ( ThreadSanitizerLegacyPass  ,
"tsan"  ,
"ThreadSanitizer: detects data races."  ,
false  ,
false   
)

◆ isAtomic()

static bool isAtomic ( Instruction I)
static

Definition at line 501 of file ThreadSanitizer.cpp.

References I, SI, and llvm::SyncScope::SingleThread.

◆ isVtableAccess()

static bool isVtableAccess ( Instruction I)
static

Definition at line 372 of file ThreadSanitizer.cpp.

References I.

◆ shouldInstrumentReadWriteFromAddress()

static bool shouldInstrumentReadWriteFromAddress ( const Module M,
Value Addr 
)
static

◆ STATISTIC() [1/9]

STATISTIC ( NumAccessesWithBadSize  ,
"Number of accesses with bad size  
)

◆ STATISTIC() [2/9]

STATISTIC ( NumInstrumentedReads  ,
"Number of instrumented reads"   
)

◆ STATISTIC() [3/9]

STATISTIC ( NumInstrumentedVtableReads  ,
"Number of vtable ptr reads"   
)

◆ STATISTIC() [4/9]

STATISTIC ( NumInstrumentedVtableWrites  ,
"Number of vtable ptr writes"   
)

◆ STATISTIC() [5/9]

STATISTIC ( NumInstrumentedWrites  ,
"Number of instrumented writes"   
)

◆ STATISTIC() [6/9]

STATISTIC ( NumOmittedNonCaptured  ,
"Number of accesses ignored due to capturing"   
)

◆ STATISTIC() [7/9]

STATISTIC ( NumOmittedReadsBeforeWrite  ,
"Number of reads ignored due to following writes"   
)

◆ STATISTIC() [8/9]

STATISTIC ( NumOmittedReadsFromConstantGlobals  ,
"Number of reads from constant globals  
)

◆ STATISTIC() [9/9]

STATISTIC ( NumOmittedReadsFromVtable  ,
"Number of vtable reads"   
)

Variable Documentation

◆ __pad0__

ThreadSanitizer __pad0__

Definition at line 219 of file ThreadSanitizer.cpp.

◆ ClCompoundReadBeforeWrite

cl::opt<bool> ClCompoundReadBeforeWrite("tsan-compound-read-before-write", cl::init(false), cl::desc("Emit special compound instrumentation for reads-before-writes"), cl::Hidden)
static

◆ ClDistinguishVolatile

cl::opt<bool> ClDistinguishVolatile("tsan-distinguish-volatile", cl::init(false), cl::desc("Emit special instrumentation for accesses to volatiles"), cl::Hidden)
static

◆ ClHandleCxxExceptions

cl::opt<bool> ClHandleCxxExceptions("tsan-handle-cxx-exceptions", cl::init(true), cl::desc("Handle C++ exceptions (insert cleanup blocks for unwinding)"), cl::Hidden)
static

◆ ClInstrumentAtomics

cl::opt<bool> ClInstrumentAtomics("tsan-instrument-atomics", cl::init(true), cl::desc("Instrument atomics"), cl::Hidden)
static

◆ ClInstrumentFuncEntryExit

cl::opt<bool> ClInstrumentFuncEntryExit("tsan-instrument-func-entry-exit", cl::init(true), cl::desc("Instrument function entry and exit"), cl::Hidden)
static

◆ ClInstrumentMemIntrinsics

cl::opt<bool> ClInstrumentMemIntrinsics("tsan-instrument-memintrinsics", cl::init(true), cl::desc("Instrument memintrinsics (memset/memcpy/memmove)"), cl::Hidden)
static

◆ ClInstrumentMemoryAccesses

cl::opt<bool> ClInstrumentMemoryAccesses("tsan-instrument-memory-accesses", cl::init(true), cl::desc("Instrument memory accesses"), cl::Hidden)
static

◆ ClInstrumentReadBeforeWrite

cl::opt<bool> ClInstrumentReadBeforeWrite("tsan-instrument-read-before-write", cl::init(false), cl::desc("Do not eliminate read instrumentation for read-before-writes"), cl::Hidden)
static

◆ false

ThreadSanitizer false

Definition at line 219 of file ThreadSanitizer.cpp.

◆ kTsanInitName

const char kTsanInitName[] = "__tsan_init"

Definition at line 100 of file ThreadSanitizer.cpp.

◆ kTsanModuleCtorName

const char kTsanModuleCtorName[] = "tsan.module_ctor"

Definition at line 99 of file ThreadSanitizer.cpp.

◆ tsan

tsan

Definition at line 218 of file ThreadSanitizer.cpp.