lab.nexedi.com/kirr/go123@v0.0.0-20240207185015-8299741fa871/tracing/internal/xruntime/zruntime_g_go1.22.go

// Code generated by g_typedef; DO NOT EDIT.

//go:build go1.22 && !go1.23
// +build go1.22,!go1.23

package xruntime

import "unsafe"
import "sync/atomic"

type g struct {
	// Stack parameters.
	// stack describes the actual stack memory: [stack.lo, stack.hi).
	// stackguard0 is the stack pointer compared in the Go stack growth prologue.
	// It is stack.lo+StackGuard normally, but can be StackPreempt to trigger a preemption.
	// stackguard1 is the stack pointer compared in the //go:systemstack stack growth prologue.
	// It is stack.lo+StackGuard on g0 and gsignal stacks.
	// It is ~0 on other goroutine stacks, to trigger a call to morestackc (and crash).
	stack       stack   // offset known to runtime/cgo
	stackguard0 uintptr // offset known to liblink
	stackguard1 uintptr // offset known to liblink

	_panic    *_panic // innermost panic - offset known to liblink
	_defer    *_defer // innermost defer
	m         *m      // current m; offset known to arm liblink
	sched     gobuf
	syscallsp uintptr // if status==Gsyscall, syscallsp = sched.sp to use during gc
	syscallpc uintptr // if status==Gsyscall, syscallpc = sched.pc to use during gc
	stktopsp  uintptr // expected sp at top of stack, to check in traceback
	// param is a generic pointer parameter field used to pass
	// values in particular contexts where other storage for the
	// parameter would be difficult to find. It is currently used
	// in four ways:
	// 1. When a channel operation wakes up a blocked goroutine, it sets param to
	//    point to the sudog of the completed blocking operation.
	// 2. By gcAssistAlloc1 to signal back to its caller that the goroutine completed
	//    the GC cycle. It is unsafe to do so in any other way, because the goroutine's
	//    stack may have moved in the meantime.
	// 3. By debugCallWrap to pass parameters to a new goroutine because allocating a
	//    closure in the runtime is forbidden.
	// 4. When a panic is recovered and control returns to the respective frame,
	//    param may point to a savedOpenDeferState.
	param        unsafe.Pointer
	atomicstatus atomic.Uint32
	stackLock    uint32 // sigprof/scang lock; TODO: fold in to atomicstatus
	goid         uint64
	schedlink    guintptr
	waitsince    int64      // approx time when the g become blocked
	waitreason   waitReason // if status==Gwaiting

	preempt       bool // preemption signal, duplicates stackguard0 = stackpreempt
	preemptStop   bool // transition to _Gpreempted on preemption; otherwise, just deschedule
	preemptShrink bool // shrink stack at synchronous safe point

	// asyncSafePoint is set if g is stopped at an asynchronous
	// safe point. This means there are frames on the stack
	// without precise pointer information.
	asyncSafePoint bool

	paniconfault bool // panic (instead of crash) on unexpected fault address
	gcscandone   bool // g has scanned stack; protected by _Gscan bit in status
	throwsplit   bool // must not split stack
	// activeStackChans indicates that there are unlocked channels
	// pointing into this goroutine's stack. If true, stack
	// copying needs to acquire channel locks to protect these
	// areas of the stack.
	activeStackChans bool
	// parkingOnChan indicates that the goroutine is about to
	// park on a chansend or chanrecv. Used to signal an unsafe point
	// for stack shrinking.
	parkingOnChan atomic.Bool
	// inMarkAssist indicates whether the goroutine is in mark assist.
	// Used by the execution tracer.
	inMarkAssist bool
	coroexit     bool // argument to coroswitch_m

	raceignore    int8  // ignore race detection events
	nocgocallback bool  // whether disable callback from C
	tracking      bool  // whether we're tracking this G for sched latency statistics
	trackingSeq   uint8 // used to decide whether to track this G
	trackingStamp int64 // timestamp of when the G last started being tracked
	runnableTime  int64 // the amount of time spent runnable, cleared when running, only used when tracking
	lockedm       muintptr
	sig           uint32
	writebuf      []byte
	sigcode0      uintptr
	sigcode1      uintptr
	sigpc         uintptr
	parentGoid    uint64          // goid of goroutine that created this goroutine
	gopc          uintptr         // pc of go statement that created this goroutine
	ancestors     *[]ancestorInfo // ancestor information goroutine(s) that created this goroutine (only used if debug.tracebackancestors)
	startpc       uintptr         // pc of goroutine function
	racectx       uintptr
	waiting       *sudog         // sudog structures this g is waiting on (that have a valid elem ptr); in lock order
	cgoCtxt       []uintptr      // cgo traceback context
	labels        unsafe.Pointer // profiler labels
	timer         *timer         // cached timer for time.Sleep
	selectDone    atomic.Uint32  // are we participating in a select and did someone win the race?

	coroarg *coro // argument during coroutine transfers

	// goroutineProfiled indicates the status of this goroutine's stack for the
	// current in-progress goroutine profile
	goroutineProfiled goroutineProfileStateHolder

	// Per-G tracer state.
	trace gTraceState

	// gcAssistBytes is this G's GC assist credit in terms of
	// bytes allocated. If this is positive, then the G has credit
	// to allocate gcAssistBytes bytes without assisting. If this
	// is negative, then the G must correct this by performing
	// scan work. We track this in bytes to make it fast to update
	// and check for debt in the malloc hot path. The assist ratio
	// determines how this corresponds to scan work debt.
	gcAssistBytes int64
}
type stack struct {
	lo uintptr
	hi uintptr
}
type _panic struct {
	argp unsafe.Pointer // pointer to arguments of deferred call run during panic; cannot move - known to liblink
	arg  interface{}    // argument to panic
	link *_panic        // link to earlier panic

	// startPC and startSP track where _panic.start was called.
	startPC uintptr
	startSP unsafe.Pointer

	// The current stack frame that we're running deferred calls for.
	sp unsafe.Pointer
	lr uintptr
	fp unsafe.Pointer

	// retpc stores the PC where the panic should jump back to, if the
	// function last returned by _panic.next() recovers the panic.
	retpc uintptr

	// Extra state for handling open-coded defers.
	deferBitsPtr *uint8
	slotsPtr     unsafe.Pointer

	recovered   bool // whether this panic has been recovered
	goexit      bool
	deferreturn bool
}
type _defer struct {
	heap      bool
	rangefunc bool    // true for rangefunc list
	sp        uintptr // sp at time of defer
	pc        uintptr // pc at time of defer
	fn        func()  // can be nil for open-coded defers
	link      *_defer // next defer on G; can point to either heap or stack!

	// If rangefunc is true, *head is the head of the atomic linked list
	// during a range-over-func execution.
	head *atomic.Pointer[_defer]
}
type gobuf struct {
	// The offsets of sp, pc, and g are known to (hard-coded in) libmach.
	//
	// ctxt is unusual with respect to GC: it may be a
	// heap-allocated funcval, so GC needs to track it, but it
	// needs to be set and cleared from assembly, where it's
	// difficult to have write barriers. However, ctxt is really a
	// saved, live register, and we only ever exchange it between
	// the real register and the gobuf. Hence, we treat it as a
	// root during stack scanning, which means assembly that saves
	// and restores it doesn't need write barriers. It's still
	// typed as a pointer so that any other writes from Go get
	// write barriers.
	sp   uintptr
	pc   uintptr
	g    guintptr
	ctxt unsafe.Pointer
	ret  uintptr
	lr   uintptr
	bp   uintptr // for framepointer-enabled architectures
}
type funcval struct {
	fn uintptr
}
type timer struct {
	// If this timer is on a heap, which P's heap it is on.
	// puintptr rather than *p to match uintptr in the versions
	// of this struct defined in other packages.
	pp puintptr

	// Timer wakes up at when, and then at when+period, ... (period > 0 only)
	// each time calling f(arg, now) in the timer goroutine, so f must be
	// a well-behaved function and not block.
	//
	// when must be positive on an active timer.
	when   int64
	period int64
	f      func(interface{}, uintptr)
	arg    interface{}
	seq    uintptr

	// What to set the when field to in timerModifiedXX status.
	nextwhen int64

	// The status field holds one of the values below.
	status atomic.Uint32
}
type guintptr uintptr
type puintptr uintptr
type muintptr uintptr
type waitReason uint8
type ancestorInfo struct {
	pcs  []uintptr // pcs from the stack of this goroutine
	goid uint64    // goroutine id of this goroutine; original goroutine possibly dead
	gopc uintptr   // pc of go statement that created this goroutine
}
type goroutineProfileStateHolder atomic.Uint32
type gTraceState struct {
	traceSchedResourceState
}
type traceTime uint64
type coro struct {
	gp guintptr
	f  func(*coro)
}
type traceSchedResourceState struct {
	// statusTraced indicates whether a status event was traced for this resource
	// a particular generation.
	//
	// There are 3 of these because when transitioning across generations, traceAdvance
	// needs to be able to reliably observe whether a status was traced for the previous
	// generation, while we need to clear the value for the next generation.
	statusTraced [3]atomic.Uint32

	// seq is the sequence counter for this scheduling resource's events.
	// The purpose of the sequence counter is to establish a partial order between
	// events that don't obviously happen serially (same M) in the stream ofevents.
	//
	// There are two of these so that we can reset the counter on each generation.
	// This saves space in the resulting trace by keeping the counter small and allows
	// GoStatus and GoCreate events to omit a sequence number (implicitly 0).
	seq [2]uint64
}
type uintreg uint          // FIXME wrong on amd64p32
type m struct{}            // FIXME stub
type sudog struct{}        // FIXME stub
type timersBucket struct{} // FIXME stub