lab.nexedi.com/kirr/go123@v0.0.0-20240207185015-8299741fa871/tracing/internal/xruntime/zruntime_g_go1.9.go (about)

     1  // Code generated by g_typedef; DO NOT EDIT.
     2  
     3  //go:build go1.9 && !go1.10
     4  // +build go1.9,!go1.10
     5  
     6  package xruntime
     7  
     8  import "unsafe"
     9  
    10  type g struct {
    11  	// Stack parameters.
    12  	// stack describes the actual stack memory: [stack.lo, stack.hi).
    13  	// stackguard0 is the stack pointer compared in the Go stack growth prologue.
    14  	// It is stack.lo+StackGuard normally, but can be StackPreempt to trigger a preemption.
    15  	// stackguard1 is the stack pointer compared in the C stack growth prologue.
    16  	// It is stack.lo+StackGuard on g0 and gsignal stacks.
    17  	// It is ~0 on other goroutine stacks, to trigger a call to morestackc (and crash).
    18  	stack       stack   // offset known to runtime/cgo
    19  	stackguard0 uintptr // offset known to liblink
    20  	stackguard1 uintptr // offset known to liblink
    21  
    22  	_panic         *_panic // innermost panic - offset known to liblink
    23  	_defer         *_defer // innermost defer
    24  	m              *m      // current m; offset known to arm liblink
    25  	sched          gobuf
    26  	syscallsp      uintptr        // if status==Gsyscall, syscallsp = sched.sp to use during gc
    27  	syscallpc      uintptr        // if status==Gsyscall, syscallpc = sched.pc to use during gc
    28  	stktopsp       uintptr        // expected sp at top of stack, to check in traceback
    29  	param          unsafe.Pointer // passed parameter on wakeup
    30  	atomicstatus   uint32
    31  	stackLock      uint32 // sigprof/scang lock; TODO: fold in to atomicstatus
    32  	goid           int64
    33  	waitsince      int64  // approx time when the g become blocked
    34  	waitreason     string // if status==Gwaiting
    35  	schedlink      guintptr
    36  	preempt        bool     // preemption signal, duplicates stackguard0 = stackpreempt
    37  	paniconfault   bool     // panic (instead of crash) on unexpected fault address
    38  	preemptscan    bool     // preempted g does scan for gc
    39  	gcscandone     bool     // g has scanned stack; protected by _Gscan bit in status
    40  	gcscanvalid    bool     // false at start of gc cycle, true if G has not run since last scan; TODO: remove?
    41  	throwsplit     bool     // must not split stack
    42  	raceignore     int8     // ignore race detection events
    43  	sysblocktraced bool     // StartTrace has emitted EvGoInSyscall about this goroutine
    44  	sysexitticks   int64    // cputicks when syscall has returned (for tracing)
    45  	traceseq       uint64   // trace event sequencer
    46  	tracelastp     puintptr // last P emitted an event for this goroutine
    47  	lockedm        *m
    48  	sig            uint32
    49  	writebuf       []byte
    50  	sigcode0       uintptr
    51  	sigcode1       uintptr
    52  	sigpc          uintptr
    53  	gopc           uintptr // pc of go statement that created this goroutine
    54  	startpc        uintptr // pc of goroutine function
    55  	racectx        uintptr
    56  	waiting        *sudog         // sudog structures this g is waiting on (that have a valid elem ptr); in lock order
    57  	cgoCtxt        []uintptr      // cgo traceback context
    58  	labels         unsafe.Pointer // profiler labels
    59  	timer          *timer         // cached timer for time.Sleep
    60  
    61  	// gcAssistBytes is this G's GC assist credit in terms of
    62  	// bytes allocated. If this is positive, then the G has credit
    63  	// to allocate gcAssistBytes bytes without assisting. If this
    64  	// is negative, then the G must correct this by performing
    65  	// scan work. We track this in bytes to make it fast to update
    66  	// and check for debt in the malloc hot path. The assist ratio
    67  	// determines how this corresponds to scan work debt.
    68  	gcAssistBytes int64
    69  }
    70  type stack struct {
    71  	lo uintptr
    72  	hi uintptr
    73  }
    74  type _panic struct {
    75  	argp      unsafe.Pointer // pointer to arguments of deferred call run during panic; cannot move - known to liblink
    76  	arg       interface{}    // argument to panic
    77  	link      *_panic        // link to earlier panic
    78  	recovered bool           // whether this panic is over
    79  	aborted   bool           // the panic was aborted
    80  }
    81  type _defer struct {
    82  	siz     int32
    83  	started bool
    84  	sp      uintptr // sp at time of defer
    85  	pc      uintptr
    86  	fn      *funcval
    87  	_panic  *_panic // panic that is running defer
    88  	link    *_defer
    89  }
    90  type gobuf struct {
    91  	// The offsets of sp, pc, and g are known to (hard-coded in) libmach.
    92  	//
    93  	// ctxt is unusual with respect to GC: it may be a
    94  	// heap-allocated funcval so write require a write barrier,
    95  	// but gobuf needs to be cleared from assembly. We take
    96  	// advantage of the fact that the only path that uses a
    97  	// non-nil ctxt is morestack. As a result, gogo is the only
    98  	// place where it may not already be nil, so gogo uses an
    99  	// explicit write barrier. Everywhere else that resets the
   100  	// gobuf asserts that ctxt is already nil.
   101  	sp   uintptr
   102  	pc   uintptr
   103  	g    guintptr
   104  	ctxt unsafe.Pointer // this has to be a pointer so that gc scans it
   105  	ret  uintreg
   106  	lr   uintptr
   107  	bp   uintptr // for GOEXPERIMENT=framepointer
   108  }
   109  type funcval struct {
   110  	fn uintptr
   111  }
   112  type timer struct {
   113  	i int // heap index
   114  
   115  	// Timer wakes up at when, and then at when+period, ... (period > 0 only)
   116  	// each time calling f(arg, now) in the timer goroutine, so f must be
   117  	// a well-behaved function and not block.
   118  	when   int64
   119  	period int64
   120  	f      func(interface{}, uintptr)
   121  	arg    interface{}
   122  	seq    uintptr
   123  }
   124  type guintptr uintptr
   125  type puintptr uintptr
   126  type muintptr uintptr
   127  type uintreg uint   // FIXME wrong on amd64p32
   128  type m struct{}     // FIXME stub
   129  type sudog struct{} // FIXME stub