folly::symbolizer

Types

Name	Description
`AddressFormatter`	Format one address in the way it's usually printed by SymbolizePrinter. Async-signal-safe.
`ElfFile`	A memory-mapped ELF object file.
`FDSymbolizePrinter`	Print a list of symbolized addresses to a file descriptor. Ignores errors. Async-signal-safe.
`FILESymbolizePrinter`	Print a list of symbolized addresses to a FILE*. Ignores errors. Not reentrant. Do not use from signal handling code.
`FrameArray`	A fixed-capacity array of captured addresses and their symbolized frames.
`LineReader`	Async-signal-safe line reader.
`LocationInfo`	Contains location info like file name, line number, etc.
`OStreamSymbolizePrinter`	Print a list of symbolized addresses to a stream. Not reentrant. Do not use from signal handling code.
`Path`	Represent a file path as a collection of three parts (base directory, subdirectory, and file).
`SafeStackTracePrinter`	Use this class to print a stack trace from a signal handler, or other place where you shouldn't allocate memory on the heap, and fsync()ing your file descriptor is more important than performance.
`StringSymbolizePrinter`	Print a list of symbolized addresses to a std::string. Not reentrant. Do not use from signal handling code.
`SymbolCacheBase`	A cache of symbolized frames, keyed by instruction address.
`SymbolizePrinter`	Print a list of symbolized addresses. Base class.
`SymbolizedFrame`	Frame information: symbol name and location.

Type Aliases

Name	Description
`CachedSymbolizedFrames`	Symbolized frames for a single address: the stacked inline calls, if any, followed by the non-inlined call. Most addresses have no inlined frames, so optimize for the single-entry case.
`SignalCallback`	Add a callback to be run when receiving a fatal signal. They will also be called by LOG(FATAL) and abort() (as those raise SIGABRT internally).

Enums

Name	Description
`LocationInfoMode`	How aggressively to resolve source location information.

Functions

Name	Description
`addFatalSignalCallback`	Register a callback to be run when a fatal signal is received.
`fatalSignalReceived`	True if a fatal signal was received (i.e. the process is crashing).
`getAsyncStackTraceSafe`	`getAsyncStackTraceSafe` overloads
`getAsyncStackTraceStr`	Async stack trace as a string; empty when symbolization is unavailable.
`getSharedSymbolCache`	The process-wide cache for `mode`.
`getStackTrace`	`getStackTrace` overloads
`getStackTraceHeap`	`getStackTraceHeap` overloads
`getStackTraceSafe`	`getStackTraceSafe` overloads
`getStackTraceStr`	`getStackTraceStr` overloads
`getSuspendedStackTraces`	Async stack traces for suspended coroutines; empty when unavailable.
`installFatalSignalCallbacks`	Install the fatal signal callbacks; fatal signals will call these callbacks in the order in which they were added.
`installFatalSignalHandler`	Install handler for fatal signals. The list of signals being handled is in SignalHandler.cpp.
`makeGenerationalSymbolCache`	A cache of roughly `capacity` entries, backed by a folly::GenerationalCacheMap: lookups are lock-free, and an address that stops appearing in stack traces is eventually evicted in favour of one that does.
`makeLruSymbolCache`	An LRU cache of `capacity` entries, backed by a Synchronized EvictingCacheMap.
`makeNullSymbolCache`	A cache that stores nothing.
`operator<<`	Write a Path to an output stream.

Variables

Name	Description
`kAllFatalSignals`	Bitmask of all fatal signals handled by the symbolizer signal handler.