lab.nexedi.com/kirr/go123@v0.0.0-20240207185015-8299741fa871/tracing/internal/xruntime/zruntime_g_go1.15.go (about)

     1  // Code generated by g_typedef; DO NOT EDIT.
     2  
     3  //go:build go1.15 && !go1.16
     4  // +build go1.15,!go1.16
     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  	schedlink    guintptr
    34  	waitsince    int64      // approx time when the g become blocked
    35  	waitreason   waitReason // if status==Gwaiting
    36  
    37  	preempt       bool // preemption signal, duplicates stackguard0 = stackpreempt
    38  	preemptStop   bool // transition to _Gpreempted on preemption; otherwise, just deschedule
    39  	preemptShrink bool // shrink stack at synchronous safe point
    40  
    41  	// asyncSafePoint is set if g is stopped at an asynchronous
    42  	// safe point. This means there are frames on the stack
    43  	// without precise pointer information.
    44  	asyncSafePoint bool
    45  
    46  	paniconfault bool // panic (instead of crash) on unexpected fault address
    47  	gcscandone   bool // g has scanned stack; protected by _Gscan bit in status
    48  	throwsplit   bool // must not split stack
    49  	// activeStackChans indicates that there are unlocked channels
    50  	// pointing into this goroutine's stack. If true, stack
    51  	// copying needs to acquire channel locks to protect these
    52  	// areas of the stack.
    53  	activeStackChans bool
    54  	// parkingOnChan indicates that the goroutine is about to
    55  	// park on a chansend or chanrecv. Used to signal an unsafe point
    56  	// for stack shrinking. It's a boolean value, but is updated atomically.
    57  	parkingOnChan uint8
    58  
    59  	raceignore     int8     // ignore race detection events
    60  	sysblocktraced bool     // StartTrace has emitted EvGoInSyscall about this goroutine
    61  	sysexitticks   int64    // cputicks when syscall has returned (for tracing)
    62  	traceseq       uint64   // trace event sequencer
    63  	tracelastp     puintptr // last P emitted an event for this goroutine
    64  	lockedm        muintptr
    65  	sig            uint32
    66  	writebuf       []byte
    67  	sigcode0       uintptr
    68  	sigcode1       uintptr
    69  	sigpc          uintptr
    70  	gopc           uintptr         // pc of go statement that created this goroutine
    71  	ancestors      *[]ancestorInfo // ancestor information goroutine(s) that created this goroutine (only used if debug.tracebackancestors)
    72  	startpc        uintptr         // pc of goroutine function
    73  	racectx        uintptr
    74  	waiting        *sudog         // sudog structures this g is waiting on (that have a valid elem ptr); in lock order
    75  	cgoCtxt        []uintptr      // cgo traceback context
    76  	labels         unsafe.Pointer // profiler labels
    77  	timer          *timer         // cached timer for time.Sleep
    78  	selectDone     uint32         // are we participating in a select and did someone win the race?
    79  
    80  	// gcAssistBytes is this G's GC assist credit in terms of
    81  	// bytes allocated. If this is positive, then the G has credit
    82  	// to allocate gcAssistBytes bytes without assisting. If this
    83  	// is negative, then the G must correct this by performing
    84  	// scan work. We track this in bytes to make it fast to update
    85  	// and check for debt in the malloc hot path. The assist ratio
    86  	// determines how this corresponds to scan work debt.
    87  	gcAssistBytes int64
    88  }
    89  type stack struct {
    90  	lo uintptr
    91  	hi uintptr
    92  }
    93  type _panic struct {
    94  	argp      unsafe.Pointer // pointer to arguments of deferred call run during panic; cannot move - known to liblink
    95  	arg       interface{}    // argument to panic
    96  	link      *_panic        // link to earlier panic
    97  	pc        uintptr        // where to return to in runtime if this panic is bypassed
    98  	sp        unsafe.Pointer // where to return to in runtime if this panic is bypassed
    99  	recovered bool           // whether this panic is over
   100  	aborted   bool           // the panic was aborted
   101  	goexit    bool
   102  }
   103  type _defer struct {
   104  	siz     int32 // includes both arguments and results
   105  	started bool
   106  	heap    bool
   107  	// openDefer indicates that this _defer is for a frame with open-coded
   108  	// defers. We have only one defer record for the entire frame (which may
   109  	// currently have 0, 1, or more defers active).
   110  	openDefer bool
   111  	sp        uintptr  // sp at time of defer
   112  	pc        uintptr  // pc at time of defer
   113  	fn        *funcval // can be nil for open-coded defers
   114  	_panic    *_panic  // panic that is running defer
   115  	link      *_defer
   116  
   117  	// If openDefer is true, the fields below record values about the stack
   118  	// frame and associated function that has the open-coded defer(s). sp
   119  	// above will be the sp for the frame, and pc will be address of the
   120  	// deferreturn call in the function.
   121  	fd   unsafe.Pointer // funcdata for the function associated with the frame
   122  	varp uintptr        // value of varp for the stack frame
   123  	// framepc is the current pc associated with the stack frame. Together,
   124  	// with sp above (which is the sp associated with the stack frame),
   125  	// framepc/sp can be used as pc/sp pair to continue a stack trace via
   126  	// gentraceback().
   127  	framepc uintptr
   128  }
   129  type gobuf struct {
   130  	// The offsets of sp, pc, and g are known to (hard-coded in) libmach.
   131  	//
   132  	// ctxt is unusual with respect to GC: it may be a
   133  	// heap-allocated funcval, so GC needs to track it, but it
   134  	// needs to be set and cleared from assembly, where it's
   135  	// difficult to have write barriers. However, ctxt is really a
   136  	// saved, live register, and we only ever exchange it between
   137  	// the real register and the gobuf. Hence, we treat it as a
   138  	// root during stack scanning, which means assembly that saves
   139  	// and restores it doesn't need write barriers. It's still
   140  	// typed as a pointer so that any other writes from Go get
   141  	// write barriers.
   142  	sp   uintptr
   143  	pc   uintptr
   144  	g    guintptr
   145  	ctxt unsafe.Pointer
   146  	ret  uintreg
   147  	lr   uintptr
   148  	bp   uintptr // for GOEXPERIMENT=framepointer
   149  }
   150  type funcval struct {
   151  	fn uintptr
   152  }
   153  type timer struct {
   154  	// If this timer is on a heap, which P's heap it is on.
   155  	// puintptr rather than *p to match uintptr in the versions
   156  	// of this struct defined in other packages.
   157  	pp puintptr
   158  
   159  	// Timer wakes up at when, and then at when+period, ... (period > 0 only)
   160  	// each time calling f(arg, now) in the timer goroutine, so f must be
   161  	// a well-behaved function and not block.
   162  	when   int64
   163  	period int64
   164  	f      func(interface{}, uintptr)
   165  	arg    interface{}
   166  	seq    uintptr
   167  
   168  	// What to set the when field to in timerModifiedXX status.
   169  	nextwhen int64
   170  
   171  	// The status field holds one of the values below.
   172  	status uint32
   173  }
   174  type guintptr uintptr
   175  type puintptr uintptr
   176  type muintptr uintptr
   177  type waitReason uint8
   178  type ancestorInfo struct {
   179  	pcs  []uintptr // pcs from the stack of this goroutine
   180  	goid int64     // goroutine id of this goroutine; original goroutine possibly dead
   181  	gopc uintptr   // pc of go statement that created this goroutine
   182  }
   183  type uintreg uint          // FIXME wrong on amd64p32
   184  type m struct{}            // FIXME stub
   185  type sudog struct{}        // FIXME stub
   186  type timersBucket struct{} // FIXME stub