Signals.cpp File Reference (original) (raw)

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Functions
static std::array< CallbackAndCookie, MaxSignalHandlerCallbacks > &	CallBacksToRun ()
static void	insertSignalHandler (sys::SignalHandlerCallback FnPtr, void *Cookie)
static bool	findModulesAndOffsets (void StackTrace, int Depth, const char Modules, intptr_t Offsets, const char MainExecutableName, StringSaver &StrPool)
static FormattedNumber	format_ptr (void *PC)
	Format a pointer value as hexadecimal.
std::optional< SmallVector< std::pair< unsigned, std::string >, 0 > >	collectAddressSymbols (void *AddressList, unsigned AddressCount, const char MainExecutableName, const std::string &LLVMSymbolizerPath)
	Reads a file Filename written by llvm-symbolizer containing function names and source locations for the addresses in AddressList and returns the strings in a vector of pairs, where the first pair element is the index of the corresponding entry in AddressList and the second is the symbolized frame, in a format based on the sanitizer stack trace printer, with the exception that it does not write out frame numbers (i.e.
ErrorOr< std::string >	getLLVMSymbolizerPath (StringRef Argv0={})
static LLVM_ATTRIBUTE_USED bool	printSymbolizedStackTrace (StringRef Argv0, void **StackTrace, int Depth, llvm::raw_ostream &OS)
	Helper that launches llvm-symbolizer and symbolizes a backtrace.
static bool	printMarkupContext (raw_ostream &OS, const char *MainExecutableName)
static LLVM_ATTRIBUTE_USED bool	printMarkupStackTrace (StringRef Argv0, void **StackTrace, int Depth, raw_ostream &OS)

Variables
static bool	DisableSymbolicationFlag = false
static ManagedStatic< std::string >	CrashDiagnosticsDirectory
constexpr char	DisableSymbolizationEnv [] = "LLVM_DISABLE_SYMBOLIZATION"
constexpr char	LLVMSymbolizerPathEnv [] = "LLVM_SYMBOLIZER_PATH"
constexpr char	EnableSymbolizerMarkupEnv [] = "LLVM_ENABLE_SYMBOLIZER_MARKUP"
static constexpr size_t	MaxSignalHandlerCallbacks = 8

◆ CallBacksToRun()

◆ collectAddressSymbols()

Reads a file Filename written by llvm-symbolizer containing function names and source locations for the addresses in AddressList and returns the strings in a vector of pairs, where the first pair element is the index of the corresponding entry in AddressList and the second is the symbolized frame, in a format based on the sanitizer stack trace printer, with the exception that it does not write out frame numbers (i.e.

"#2 " for the third address), as it is not assumed that AddressList corresponds to a single stack trace. There may be multiple returned entries for a single AddressList entry if that frame address corresponds to one or more inlined frames; in this case, all frames for an address will appear contiguously and in-order.

Definition at line 151 of file Signals.cpp.

References Allocator, llvm::SmallString< InternalLen >::c_str(), llvm::sys::fs::createTemporaryFile(), llvm::SmallVectorTemplateCommon< T, typename >::data(), llvm::StringRef::empty(), llvm::sys::ExecuteAndWait(), findModulesAndOffsets(), llvm::format_hex(), format_ptr(), llvm::MemoryBuffer::getFile(), llvm::StringRef::split(), llvm::StringRef::starts_with(), and llvm::SmallString< InternalLen >::str().

Referenced by printSymbolizedStackTrace().

◆ findModulesAndOffsets()

bool findModulesAndOffsets ( void ** StackTrace, int Depth, const char ** Modules, intptr_t * Offsets, const char * MainExecutableName, StringSaver & StrPool )	static

◆ format_ptr()

◆ getLLVMSymbolizerPath()

◆ insertSignalHandler()

◆ printMarkupContext()

◆ printMarkupStackTrace()

◆ printSymbolizedStackTrace()

◆ CrashDiagnosticsDirectory

◆ DisableSymbolicationFlag

bool DisableSymbolicationFlag = false	static

◆ DisableSymbolizationEnv

char DisableSymbolizationEnv[] = "LLVM_DISABLE_SYMBOLIZATION"	constexpr

◆ EnableSymbolizerMarkupEnv

char EnableSymbolizerMarkupEnv[] = "LLVM_ENABLE_SYMBOLIZER_MARKUP"	constexpr

◆ LLVMSymbolizerPathEnv

char LLVMSymbolizerPathEnv[] = "LLVM_SYMBOLIZER_PATH"	constexpr

◆ MaxSignalHandlerCallbacks

size_t MaxSignalHandlerCallbacks = 8	staticconstexpr