// Arguments are passed in DI, SI, DX, CX, R8, R9, the rest is on stack.
// Callee-saved registers are: BX, BP, R12-R15.
// SP must be 16-byte aligned.
// On Windows:
// Arguments are passed in CX, DX, R8, R9, the rest is on stack.
// Callee-saved registers are: BX, BP, DI, SI, R12-R15.
// SP must be 16-byte aligned. Windows also requires "stack-backing" for the 4 register arguments:
// https://learn.microsoft.com/en-us/cpp/build/x64-calling-convention

		// we don't want to do it every time. But if _stext happens to be
		// page-aligned but isn't the same as Vaddr, we would symbolize
		// wrong. So if the name the addresses aren't page aligned, or if
		// the name is "vmlinux" we read _stext. We can be wrong if: (1)
		// someone passes a kernel path that doesn't contain "vmlinux" AND
		// (2) _stext is page-aligned AND (3) _stext is not at Vaddr
		symbols, err := ef.Symbols()

	// one read into the tiny buffer before reading new data into the big buffer.
	// The search for id is over the entire tiny+big buffer.
	tiny := (len(id) + 127) &^ 127 // round up to 128-aligned
	buf := make([]byte, tiny+bufSize)
	h := sha256.New()
	start := tiny
	for offset := int64(0); ; {
		// The file offset maintained by the loop corresponds to &buf[tiny].

		expectedHints []topologymanager.TopologyHint
	}{
		{
			// CPU available on numa node[0 ,1]. CPU on numa node 0 can satisfy request of 2 CPU's
			description:   "AlignBySocket:false, Preferred hints does not contains socket aligned hints",
			pod:           *testPod1,
			container:     *testContainer1,
			defaultCPUSet: cpuset.New(2, 3, 11),
			topology:      topoDualSocketMultiNumaPerSocketHT,

	}
	// len(lines) > 1

	// The heuristic in this function tries to handle a few
	// common patterns of /*-style comments: Comments where
	// the opening /* and closing */ are aligned and the
	// rest of the comment text is aligned and indented with
	// blanks or tabs, cases with a vertical "line of stars"
	// on the left, and cases where the closing */ is on the
	// same line as the last comment text.

		})
		return closer.Close()
	}
	return nil
}

func (b *streamingBitrotReader) ReadAt(buf []byte, offset int64) (int, error) {
	var err error
	if offset%b.shardSize != 0 {
		// Offset should always be aligned to b.shardSize
		// Can never happen unless there are programmer bugs
		return 0, errUnexpected
	}
	if b.rc == nil {
		// For the first ReadAt() call we need to open the stream for reading.
		b.currOffset = offset

func init() {
	// Inject metrics.
	ioutilx.OsOpenFile = OpenFile
	ioutilx.OpenFileDirectIO = OpenFileDirectIO
	ioutilx.OsOpen = Open
}

type osMetrics struct {
	// All fields must be accessed atomically and aligned.
	operations [osMetricLast]uint64
	latency    [osMetricLast]lockedLastMinuteLatency
}

// time an os action.
func (o *osMetrics) time(s osMetric) func() {
	startTime := time.Now()
	return func() {

	if b := (offAddr{c.base}); b.lessThan(p.searchAddr) {
		p.searchAddr = b
	}
	p.update(c.base, pageCachePages, false, false)
	*c = pageCache{}
}

// allocToCache acquires a pageCachePages-aligned chunk of free pages which
// may not be contiguous, and returns a pageCache structure which owns the
// chunk.
//
// p.mheapLock must be held.
//
// Must run on the system stack because p.mheapLock must be held.

		return applyrel(target.Arch, ldr, rt, r.Off(), s, val, t), noExtReloc, isOk
	case objabi.R_CALLMIPS, objabi.R_JMPMIPS:
		t := ldr.SymValue(rs) + r.Add()

		if t&3 != 0 {
			ldr.Errorf(s, "direct call is not aligned: %s %x", ldr.SymName(rs), t)
		}

		// check if target address is in the same 256 MB region as the next instruction
		if (ldr.SymValue(s)+int64(r.Off())+4)&0xf0000000 != (t & 0xf0000000) {

f_dest_aligned:
	AND	$31, R3, R7
	AND	$3, R3, R6
	SUBU	R7, R5, R7	// end pointer for 32-byte chunks
	SUBU	R6, R5, R6	// end pointer for 4-byte chunks

	// if source is not aligned, use unaligned reads
	AND	$3, R2, R8
	BNE	R8, f_large_ua

f_large:
	BEQ	R1, R7, f_words
	ADDU	$32, R1
	MOVW	0(R2), R8
	MOVW	4(R2), R9
	MOVW	8(R2), R10
	MOVW	12(R2), R11
	MOVW	16(R2), R12
	MOVW	20(R2), R13
	MOVW	24(R2), R14
	MOVW	28(R2), R15