Signals.cpp File Reference

#include "llvm/Support/Signals.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Config/llvm-config.h"
#include "llvm/Support/ErrorOr.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/FileUtilities.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/FormatVariadic.h"
#include "llvm/Support/FormatAdapters.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Mutex.h"
#include "llvm/Support/Program.h"
#include "llvm/Support/StringSaver.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/Options.h"
#include <vector>
#include "Unix/Signals.inc"

Include dependency graph for Signals.cpp:

Go to the source code of this file.

Classes
struct	CallbackAndCookie

Functions
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. More...
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. More...

Variables
static bool	DisableSymbolicationFlag = false
static cl::opt< bool, true >	DisableSymbolication ("disable-symbolication", cl::desc("Disable symbolizing crash backtraces."), cl::location(DisableSymbolicationFlag), cl::Hidden)
static constexpr size_t	MaxSignalHandlerCallbacks = 8
static CallbackAndCookie	CallBacksToRun [MaxSignalHandlerCallbacks]

Function Documentation

findModulesAndOffsets()

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

static

Referenced by insertSignalHandler(), and printSymbolizedStackTrace().

format_ptr()

static FormattedNumber format_ptr ( void *  PC )

static

Format a pointer value as hexadecimal.

Zero pad it out so its always the same width.

Definition at line 99 of file Signals.cpp.

References llvm::format_hex(), and LLVM_ATTRIBUTE_USED.

Referenced by printSymbolizedStackTrace().

insertSignalHandler()

static void insertSignalHandler ( sys::SignalHandlerCallback  FnPtr, void *  Cookie  )

static

Definition at line 76 of file Signals.cpp.

References llvm::Depth, CallbackAndCookie::Empty, findModulesAndOffsets(), I, CallbackAndCookie::Initialized, CallbackAndCookie::Initializing, MaxSignalHandlerCallbacks, and llvm::report_fatal_error().

printSymbolizedStackTrace()

static LLVM_ATTRIBUTE_USED bool printSymbolizedStackTrace ( StringRef  Argv0, void **  StackTrace, int  Depth, llvm::raw_ostream &  OS  )

static

Helper that launches llvm-symbolizer and symbolizes a backtrace.

Definition at line 107 of file Signals.cpp.

References Allocator, llvm::AMDGPU::HSAMD::Kernel::Key::Args, llvm::SmallVectorTemplateCommon< T >::begin(), llvm::SmallString< InternalLen >::c_str(), llvm::sys::fs::createTemporaryFile(), llvm::Depth, llvm::StringRef::empty(), llvm::SmallVectorTemplateCommon< T >::end(), llvm::sys::ExecuteAndWait(), llvm::StringRef::find(), findModulesAndOffsets(), llvm::sys::findProgramByName(), llvm::format_hex(), format_ptr(), llvm::formatv(), llvm::MemoryBuffer::getFile(), llvm::sys::fs::getMainExecutable(), llvm::Intrinsic::log10, llvm::None, llvm::sys::path::parent_path(), llvm::right_justify(), llvm::StringRef::split(), and llvm::StringRef::startswith().

Variable Documentation

CallBacksToRun

CallbackAndCookie CallBacksToRun[MaxSignalHandlerCallbacks]

static

Definition at line 58 of file Signals.cpp.

DisableSymbolication

cl::opt<bool, true> DisableSymbolication("disable-symbolication", cl::desc("Disable symbolizing crash backtraces."), cl::location(DisableSymbolicationFlag), cl::Hidden)

static

DisableSymbolicationFlag

bool DisableSymbolicationFlag = false

static

Definition at line 42 of file Signals.cpp.

MaxSignalHandlerCallbacks

constexpr size_t MaxSignalHandlerCallbacks = 8

static

Definition at line 57 of file Signals.cpp.

Referenced by insertSignalHandler(), and llvm::sys::RunSignalHandlers().