llvm::sys

Namespaces

Name	Description
fs	Filesystem path and open-flag helpers.
locale	Utilities for measuring display width and testing printable characters.
path	Path parsing and manipulation utilities (TR2/boost-filesystem style).
sandbox	Thread-local controls for detecting unexpected host filesystem IO.
unicode	Utilities for querying Unicode character properties and names.

Types

Name	Description
DynamicLibrary	Portable interface to load and search dynamic libraries.
InitializeCOMRAII	RAII helper that initializes COM for the current thread.
Memory	This class provides various memory handling functions that manipulate MemoryBlock instances.
MemoryBlock	Memory block with an address and a size.
OwningMemoryBlock	Owning version of MemoryBlock.
Process	A collection of legacy interfaces for querying information about the current executing process.
ProcessInfo	This struct encapsulates information about a process.
ProcessStatistics	This struct encapsulates information about a process execution.
SmartMutex	Mutex that optionally becomes a no-op outside multithreaded mode.
SmartRWMutex	An R/W mutex that can become a no-op when not multithreaded.
UnicodeCharRange	Represents a closed range of Unicode code points [Lower, Upper].
UnicodeCharSet	Holds a reference to an ordered array of UnicodeCharRange and allows to quickly check if a code point is contained in the set represented by this array.
UtcClock	Clock whose time points represent UTC instants for formatting.
Watchdog	Abstraction for a timeout around an operation that must complete in time.

Type Aliases

Name	Description
Mutex	Mutex - A standard, always enforced mutex.
RWMutex	A standard, always-enforced reader/writer mutex.
ScopedLock	RAII lock guard for Mutex.
ScopedReader	RAII acquisition of a reader lock on a RWMutex.
ScopedWriter	RAII acquisition of a writer lock on a RWMutex.
SignalHandlerCallback	Callback invoked by AddSignalHandler when an abort/kill signal occurs.
SmartScopedLock	RAII lock guard for SmartMutex.
SmartScopedReader	RAII shared (reader) lock guard for SmartRWMutex.
SmartScopedWriter	RAII exclusive (writer) lock guard for SmartRWMutex.
TimePoint	A time point on the system clock.
UtcTime	A time point on the UTC clock with duration D (default nanoseconds).
cas_flag	Integer type used as the value type for legacy compare-and-swap.
process_t	Platform-native process handle type.
procid_t	Process identifier type.

Enums

Name	Description
COMThreadingMode	Threading model used when initializing COM on Windows.
WindowsEncodingMethod	File encoding options when writing contents that a non-UTF8 tool will read (on Windows systems). For UNIX, we always use UTF-8.

Functions

Name	Description
AddSignalHandler	Add a function to be called when an abort/kill signal is delivered to the process.
ChangeStdinMode	Change stdin to the mode described by Flags.
ChangeStdinToBinary	Change stdin to binary mode.
ChangeStdoutMode	Change stdout to the mode described by Flags.
ChangeStdoutToBinary	Change stdout to binary mode.
CleanupOnSignal	Clean up temporary files, dump the stack, run handlers, and create a crash dump after a fatal signal.
CompareAndSwap	Atomically compares the value at ptr with old_value and stores new_value if they are equal.
DefaultOneShotPipeSignalHandler	On Unix systems and Windows, this function exits with an "IO error" exit code.
DisableSystemDialogsOnCrash	Disable all system dialog boxes that appear when the process crashes.
DontRemoveFileOnSignal	This function removes a file from the list of files to be removed on signal delivery.
ExecuteAndWait	Execute a program and wait for it to finish.
ExecuteNoWait	Similar to ExecuteAndWait, but returns immediately.
MemoryFence	Issues a full memory fence that orders preceding and following accesses.
PrintStackTrace	Print the stack trace using the given raw_ostream object.
PrintStackTraceOnErrorSignal	When an error signal (such as SIGABRT or SIGSEGV) is delivered to the process, print a stack trace and then exit. Print a stack trace if a fatal signal occurs.
RemoveFileOnSignal	This function registers signal handlers to ensure that if a signal gets delivered that the named file is removed. Remove a file if a fatal signal occurs.
RetryAfterSignal	Invokes F with As, retrying when interrupted by a signal.
RunInterruptHandlers	This function runs all the registered interrupt handlers, including the removal of files registered by RemoveFileOnSignal.
RunSignalHandlers	Run all registered signal handlers added via AddSignalHandler.
RunningOnValgrind	Returns true if Valgrind is controlling this process.
SetInfoSignalFunction	Registers a function to be called when an "info" signal is delivered to the process.
SetInterruptFunction	Register a function to be called when the user interrupts the program.
SetOneShotPipeSignalFunction	Register a one-shot handler for a failed write to a pipe.
StrError	StrError overloads
ValgrindDiscardTranslations	Discards Valgrind's translation of code in the given address range.
Wait	This function waits for the process specified by PI to finish.
commandLineFitsWithinSystemLimits	Return true if the given arguments fit within system-specific argument length limits.
findProgramByName	Find the first executable file Name in Paths.
getDefaultTargetTriple	getDefaultTargetTriple() - Return the default target triple the compiler has been configured to produce code for.
getHostCPUFeatures	getHostCPUFeatures - Get the LLVM names for the host CPU features.
getHostCPUName	getHostCPUName - Get the LLVM name for the host CPU.
getProcessTriple	getProcessTriple() - Return an appropriate target triple for generating code to be loaded into the current process, e.g. when using the JIT.
getSwappedBytes	getSwappedBytes overloads
printArg	Print a command argument, and optionally quote it.
printDefaultTargetAndDetectedCPU	This is a function compatible with cl::AddExtraVersionPrinter, which adds info about the current target triple and detected CPU.
swapByteOrder	Reverse the byte order of Value in place.
toTimePoint	toTimePoint overloads
toTimeT	toTimeT overloads
toUtcTime	Convert a std::time_t to a UtcTime.
unregisterHandlers	Unregister previously installed signal handlers, restoring prior behavior.
writeFileWithEncoding	Saves the UTF8-encoded contents string into the file FileName using a specific encoding.
operator<<	Stream insertion operators
operator<	Less-than operators

Variables

Name	Description
EnvPathSeparator	OS-specific separator for PATH-like environment variables.
IsBigEndianHost	True if this host stores multi-byte values most-significant byte first.
IsLittleEndianHost	True if this host stores multi-byte values least-significant byte first.