go/src/runtime/symtabinl.go

type inlinedCall …

type inlineUnwinder …

type inlineFrame …

// newInlineUnwinder creates an inlineUnwinder initially set to the inner-most
// inlined frame at PC. PC should be a "call PC" (not a "return PC").
//
// This unwinder uses non-strict handling of PC because it's assumed this is
// only ever used for symbolic debugging. If things go really wrong, it'll just
// fall back to the outermost frame.
//
// newInlineUnwinder should be an internal detail,
// but widely used packages access it using linkname.
// Notable members of the hall of shame include:
//   - github.com/phuslu/log
//
// Do not remove or change the type signature.
// See go.dev/issue/67401.
//
//go:linkname newInlineUnwinder
func newInlineUnwinder(f funcInfo, pc uintptr) (inlineUnwinder, inlineFrame) { … }

func (u *inlineUnwinder) resolveInternal(pc uintptr) inlineFrame { … }

func (uf inlineFrame) valid() bool { … }

// next returns the frame representing uf's logical caller.
func (u *inlineUnwinder) next(uf inlineFrame) inlineFrame { … }

// isInlined returns whether uf is an inlined frame.
func (u *inlineUnwinder) isInlined(uf inlineFrame) bool { … }

// srcFunc returns the srcFunc representing the given frame.
//
// srcFunc should be an internal detail,
// but widely used packages access it using linkname.
// Notable members of the hall of shame include:
//   - github.com/phuslu/log
//
// Do not remove or change the type signature.
// See go.dev/issue/67401.
//
// The go:linkname is below.
func (u *inlineUnwinder) srcFunc(uf inlineFrame) srcFunc { … }

//go:linkname badSrcFunc runtime.(*inlineUnwinder).srcFunc
func badSrcFunc(*inlineUnwinder, inlineFrame) srcFunc

// fileLine returns the file name and line number of the call within the given
// frame. As a convenience, for the innermost frame, it returns the file and
// line of the PC this unwinder was started at (often this is a call to another
// physical function).
//
// It returns "?", 0 if something goes wrong.
func (u *inlineUnwinder) fileLine(uf inlineFrame) (file string, line int) { … }