stackLarge,
  stackpool,
  wbufSpans
# Above mheap is anything that can call the span allocator.
< mheap;
# Below mheap is the span allocator implementation.
#
# Specials: we're allowed to allocate a special while holding
# an mspanSpecial lock, and they're part of the malloc implementation.
# Pinner bits might be freed by the span allocator.
mheap, mspanSpecial < mheapSpecial;
mheap, mheapSpecial < globalAlloc;

}

func main() {
}

/* Before fix:

invalid m->locked = 2
fatal error: internal lockOSThread error

goroutine 2 [runnable]:
runtime.MHeap_Scavenger()
	/Users/rsc/g/go/src/pkg/runtime/mheap.c:438
runtime.goexit()
	/Users/rsc/g/go/src/pkg/runtime/proc.c:1313
created by runtime.main
	/Users/rsc/g/go/src/pkg/runtime/proc.c:165

goroutine 3 [runnable]:
main.func·002()

			c.fullSwept(sg).push(s)
		}
	}
}

// grow allocates a new empty span from the heap and initializes it for c's size class.
func (c *mcentral) grow() *mspan {
	npages := uintptr(class_to_allocnpages[c.spanclass.sizeclass()])
	size := uintptr(class_to_size[c.spanclass.sizeclass()])

	s := mheap_.alloc(npages, c.spanclass)
	if s == nil {
		return nil
	}

// Package heap provides heap operations for any type that implements
// heap.Interface. A heap is a tree with the property that each node is the
// minimum-valued node in its subtree.
//
// The minimum element in the tree is the root, at index 0.
//
// A heap is a common way to implement a priority queue. To build a priority
// queue, implement the Heap interface with the (negative) priority as the

	return h.data.Peek()
}

// Pop returns the head of the heap and removes it.
func (h *Heap) Pop() (interface{}, error) {
	obj := heap.Pop(h.data)
	if obj != nil {
		if h.metricRecorder != nil {
			h.metricRecorder.Dec()
		}
		return obj, nil
	}
	return nil, fmt.Errorf("object was removed from heap data")
}

// Get returns the requested item, or sets exists=false.

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package ld

import "cmd/link/internal/loader"

// Min-heap implementation, for the deadcode pass.
// Specialized for loader.Sym elements.

type heap []loader.Sym

func (h *heap) push(s loader.Sym) {
	*h = append(*h, s)
	// sift up
	n := len(*h) - 1
	for n > 0 {
		p := (n - 1) / 2 // parent
		if (*h)[p] <= (*h)[n] {
			break

    MinMaxPriorityQueue<T> mmHeap;

    public InvertedMinMaxPriorityQueue(Comparator<T> comparator) {
      mmHeap = MinMaxPriorityQueue.orderedBy(comparator).create();
    }

    @Override
    protected Queue<T> delegate() {
      return mmHeap;
    }

    @Override
    public @Nullable T poll() {
      return mmHeap.pollLast();
    }
  }

  public enum HeapType {

// license that can be found in the LICENSE file.

package heap

import (
	"math/rand"
	"testing"
)

type myHeap []int

func (h *myHeap) Less(i, j int) bool {
	return (*h)[i] < (*h)[j]
}

func (h *myHeap) Swap(i, j int) {
	(*h)[i], (*h)[j] = (*h)[j], (*h)[i]
}

func (h *myHeap) Len() int {
	return len(*h)
}

func (h *myHeap) Pop() (v any) {
	*h, v = (*h)[:h.Len()-1], (*h)[h.Len()-1]
	return

}

func (c *Expiring) gc(now time.Time) {
	for {
		// Return from gc if the heap is empty or the next element is not yet
		// expired.
		//
		// heap[0] is a peek at the next element in the heap, which is not obvious
		// from looking at the (*expiringHeap).Pop() implementation below.
		// heap.Pop() swaps the first entry with the last entry of the heap, then
		// calls (*expiringHeap).Pop() which returns the last element.

		throw("traceSnapshotMemory: tracing is not enabled")
	}

	// Write out all the heap spans and heap objects.
	for _, s := range mheap_.allspans {
		if s.state.get() == mSpanDead {
			continue
		}
		// It's some kind of span, so trace that it exists.
		trace.SpanExists(s)

		// Write out allocated objects if it's a heap span.
		if s.state.get() != mSpanInUse {
			continue
		}

		// Find all allocated objects.