if err != nil {
		return err
	}

	// copy heap to new mapping
	if uint64(oldlen+len(out.heap)) > filesize {
		panic("mmap size too small")
	}
	copy(out.buf[oldlen:], out.heap)
	out.heap = out.heap[:0]
	return nil
}

func (out *OutBuf) munmap() {
	if out.buf == nil {
		return
	}
	syscall.Munmap(out.buf)
	out.buf = nil

func (pq priorityQueue) Less(i, j int) bool {
	// Flip logic to make this a min queue.
	if pq[i].deadline == pq[j].deadline {
		return pq[i].index < pq[j].index
	}
	return pq[i].deadline < pq[j].deadline
}

// Swap implements heap.Interface/sort.Interface
func (pq priorityQueue) Swap(i, j int) {
	pq[i], pq[j] = pq[j], pq[i]
}

// Push implements heap.Interface for pushing an item into the heap

	// Experimental heap span events. IDs map reversibly to base addresses.
	traceEvSpan      // heap span exists [timestamp, id, npages, type/class]
	traceEvSpanAlloc // heap span alloc [timestamp, id, npages, type/class]
	traceEvSpanFree  // heap span free [timestamp, id]

	// Experimental heap object events. IDs map reversibly to addresses.
	traceEvHeapObject      // heap object exists [timestamp, id, type]

package ld

// Mmap allocates an in-heap output buffer with the given size. It copies
// any old data (if any) to the new buffer.
func (out *OutBuf) Mmap(filesize uint64) error {
	// We need space to put all the symbols before we apply relocations.
	oldheap := out.heap
	if filesize < uint64(len(oldheap)) {
		panic("mmap size too small")
	}
	out.heap = make([]byte, filesize)
	copy(out.heap, oldheap)
	return nil
}

// #cgo noescape annotations for a C function means its arguments won't escape to heap.

// We assume that there won't be 100 new allocated heap objects in other places,
// i.e. runtime.ReadMemStats or other runtime background works.
// So, the tests are:
// 1. at least 100 new allocated heap objects after invoking withoutNoEscape 100 times.
// 2. less than 100 new allocated heap objects after invoking withoutNoEscape 100 times.

/*

import org.gradle.internal.jvm.Jvm;

import java.util.Arrays;
import java.util.Locale;

/**
 * Helper to compute maximum heap sizes.
 */
public class MaximumHeapHelper {

    /**
     * Get the default maximum heap.
     *
     * Different JVMs on different systems may use a different default for maximum heap when unset.
     * This method implements a best effort approximation, omitting rules for low memory systems (<192MB total RAM).

}

func F4(b *B) { // ERROR "leaking param content: b"
	fmt.Println(*b) // ERROR "\.\.\. argument does not escape" "\*b escapes to heap"
}

func F4a(b *B) { // ERROR "leaking param content: b" "mutates param: b derefs=0"
	b.x = 2
	fmt.Println(*b) // ERROR "\.\.\. argument does not escape" "\*b escapes to heap"
}

func F5(b *B) { // ERROR "leaking param: b"
	sink = b
}

	// Mallocs is the cumulative count of heap objects allocated.
	// The number of live objects is Mallocs - Frees.
	Mallocs uint64

	// Frees is the cumulative count of heap objects freed.
	Frees uint64

	// Heap memory statistics.
	//
	// Interpreting the heap statistics requires some knowledge of
	// how Go organizes memory. Go divides the virtual address
	// space of the heap into "spans", which are contiguous

REM FESS_JAVA_OPTS=%FESS_JAVA_OPTS% -Djavax.net.ssl.trustStorePassword=changeit

REM Causes the JVM to dump its heap on OutOfMemory.
REM set FESS_JAVA_OPTS=%FESS_JAVA_OPTS% -XX:+HeapDumpOnOutOfMemoryError
REM The path to the heap dump location, note directory must exists and have enough
REM space for a full heap dump.
REM FESS_JAVA_OPTS=%FESS_JAVA_OPTS% -XX:HeapDumpPath=%FESS_HOME%/logs/heapdump.hprof

REM Disables explicit GC

    }

    def health(GarbageCollectionStats heap, GarbageCollectionStats metaspace) {
        return Stub(DaemonHealthStats) {
            getHeapStats() >> heap
            getNonHeapStats() >> metaspace
        }
    }