if !ok {
		// We were unable to get the requested reservation.
		// Release what we did get and fail.
		sysFreeOS(got, physPageSize)
	}
	return
}

func GetNextArenaHint() uintptr {
	return mheap_.arenaHints.addr
}

type G = g

type Sudog = sudog

func Getg() *G {
	return getg()
}

func Goid() uint64 {
	return getg().goid
}

			"(*mspan).base",
			"(*mspan).markBitsForBase",
			"(*mspan).markBitsForIndex",
			"(*mspan).writeUserArenaHeapBits",
			"(*muintptr).set",
			"(*puintptr).set",
			"(*wbBuf).get1",
			"(*wbBuf).get2",

			// Trace-related ones.
			"traceLocker.ok",
			"traceEnabled",
		},
		"runtime/internal/sys": {},
		"runtime/internal/math": {
			"MulUintptr",
		},
		"bytes": {

        final Map<String, Object> dest = newHashMap();
        BeanUtil.copyBeanToMap(src, dest);
        assertThat(dest.get("aaa"), is((Object) "aaa"));
        assertThat(dest.get("bbb"), is(nullValue()));
        assertThat(dest.get("ccc"), is((Object) "ccc"));
        assertThat(dest.get("ddd"), is(nullValue()));
    }

    /**
     * @throws Exception
     */
    @Test

so their memory remains type stable. As a result, the runtime can
avoid write barriers in the depths of the scheduler.

`getg()` and `getg().m.curg`
----------------------------

To get the current user `g`, use `getg().m.curg`.

`getg()` alone returns the current `g`, but when executing on the
system or signal stacks, this will return the current M's "g0" or

		// symbolizer.
		pcBuf[0] = logicalStackSentinel
		if getg() == gp {
			nstk += callers(skip+1, pcBuf[1:])
		} else if gp != nil {
			nstk += gcallers(gp, skip, pcBuf[1:])
		}
	} else {
		// Fast path: Unwind using frame pointers.
		pcBuf[0] = uintptr(skip)
		if getg() == gp {
			nstk += fpTracebackPCs(unsafe.Pointer(getfp()), pcBuf[1:])
		} else if gp != nil {
			// Three cases:

		minitSignalStack()
	}
	minitSignalMask()
	getg().m.procid = uint64(pthread_self())
}

// Called from dropm to undo the effect of an minit.
//
//go:nosplit
func unminit() {
	// iOS does not support alternate signal stack.
	// See minit.
	if !(GOOS == "ios" && GOARCH == "arm64") {
		unminitSignals()
	}
	getg().m.procid = 0
}

// sigpanic calls can be injected.
//
// The signal handler must not inject a call to sigpanic if
// getg().throwsplit, since sigpanic may need to grow the stack.
//
// This is exported via linkname to assembly in runtime/cgo.
//
//go:linkname sigpanic
func sigpanic() {
	gp := getg()
	if !canpanic() {
		throw("unexpected signal during runtime execution")
	}

	switch gp.sig {
	case _SIGBUS:

	if goarch.IsWasm == 0 && stringslite.HasPrefix(funcname(findfunc(pc)), "runtime.") {
		// Note: wasm can't tail call, so we can't get the original caller's pc.
		throw(msg)
	}
	// TODO: is this redundant? How could we be in malloc
	// but not in the runtime? runtime/internal/*, maybe?
	gp := getg()
	if gp != nil && gp.m != nil && gp.m.mallocing != 0 {
		throw(msg)
	}
}

}

func put(dat item, out *dch) {
	<-out.req
	out.dat <- dat
}

func get(in *dch) *rat {
	seqno++
	in.req <- seqno
	return (<-in.dat).(*rat)
}

// Get one item from each of n demand channels

func getn(in []*dch) []item {
	n := len(in)
	if n != 2 {
		panic("bad n in getn")
	}
	req := make([]chan int, 2)
	dat := make([]chan item, 2)
	out := make([]item, 2)

	}
	if s := readgstatus(gp); s&_Gscan == 0 {
		// We don't own the stack via _Gscan. We could still
		// own it if this is our own user G and we're on the
		// system stack.
		if !(gp == getg().m.curg && getg() != getg().m.curg && s == _Grunning) {
			// We don't own the stack.
			throw("bad status in shrinkstack")
		}
	}
	if !isShrinkStackSafe(gp) {
		throw("shrinkstack at bad time")
	}