if (value < 1024) {
            format = "0";
        } else if (value < 1024L * 1024L) {
            target /= 1024;
            unit = "K";
        } else if (value < 1024L * 1024L * 1024L) {
            target /= 1024;
            target /= 1024;
            unit = "M";
        } else if (value < 1024L * 1024L * 1024L * 1024L) {
            target /= 1024;
            target /= 1024;

		{
			// 1Mib < 2Mib < 10MiB -> in range
			objSize: 2 << 20,
			sizeFilter: BatchJobSizeFilter{
				UpperBound: 10 << 20,
				LowerBound: 1 << 20,
			},
			want: true,
		},
		{
			// 2KiB < 1 MiB -> out of range from left
			objSize: 2 << 10,
			sizeFilter: BatchJobSizeFilter{
				UpperBound: 10 << 20,
				LowerBound: 1 << 20,
			},
			want: false,
		},
		{
			// 11MiB > 10 MiB -> out of range from right

  private Platform() {}

  /** Returns a thread-local 1024-char array. */
  static char[] charBufferFromThreadLocal() {
    // requireNonNull accommodates Android's @RecentlyNullable annotation on ThreadLocal.get
    return requireNonNull(DEST_TL.get());
  }

  /**
   * A thread-local destination buffer to keep us from creating new buffers. The starting size is

  RoundingMode mode;

  @BeforeExperiment
  void setUp() {
    for (int i = 0; i < ARRAY_SIZE; i++) {
      positive[i] = randomPositiveBigInteger(1024);
      nonzero1[i] = randomNonZeroBigInteger(1024);
      nonzero2[i] = randomNonZeroBigInteger(1024);
    }
  }

  @Benchmark
  int log2(int reps) {
    int tmp = 0;
    for (int i = 0; i < reps; i++) {
      int j = i & ARRAY_MASK;

    val relay = edit(file, upstream, metadata, 1024)
    val source = relay.newSource()
    val sourceBuffer = Buffer()
    assertThat(source!!.read(sourceBuffer, 5)).isEqualTo(5)
    assertThat(sourceBuffer.readUtf8()).isEqualTo("abcde")
    assertThat(source.read(sourceBuffer, 1024)).isEqualTo(8)
    assertThat(sourceBuffer.readUtf8()).isEqualTo("fghijklm")
    assertThat(source.read(sourceBuffer, 1024)).isEqualTo(-1)

  RoundingMode mode;

  @BeforeExperiment
  void setUp() {
    for (int i = 0; i < ARRAY_SIZE; i++) {
      positive[i] = randomPositiveBigInteger(1024);
      nonzero1[i] = randomNonZeroBigInteger(1024);
      nonzero2[i] = randomNonZeroBigInteger(1024);
    }
  }

  @Benchmark
  int log2(int reps) {
    int tmp = 0;
    for (int i = 0; i < reps; i++) {
      int j = i & ARRAY_MASK;

pkg syscall (freebsd-386), type Stat_t struct, Rdev uint64
pkg syscall (freebsd-386), type Stat_t struct, Spare [10]uint64
pkg syscall (freebsd-386), type Statfs_t struct, Mntfromname [1024]int8
pkg syscall (freebsd-386), type Statfs_t struct, Mntonname [1024]int8
pkg syscall (freebsd-386-cgo), const S_IRWXG = 56
pkg syscall (freebsd-386-cgo), const S_IRWXG ideal-int
pkg syscall (freebsd-386-cgo), const S_IRWXO = 7

)

func BenchmarkRingBuffer_Sync(b *testing.B) {
	rb := New(1024)
	data := []byte(strings.Repeat("a", 512))
	buf := make([]byte, 512)

	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		rb.Write(data)
		rb.Read(buf)
	}
}

func BenchmarkRingBuffer_AsyncRead(b *testing.B) {
	// Pretty useless benchmark, but it's here for completeness.
	rb := New(1024)
	data := []byte(strings.Repeat("a", 512))
	buf := make([]byte, 512)

    }


    @Test
    public void testReadWrite () throws IOException {
        try ( SmbFile f = createTestFile() ) {
            try {
                int bufSize = 4096;
                long l = 1024;
                try ( SmbRandomAccessFile raf = new SmbRandomAccessFile(f, "rw") ) {
                    writeRandom(bufSize, l, raf);
                    assertEquals(l, raf.getFilePointer());

[![wikipedia](Circular_Buffer_Animation.gif)](https://github.com/smallnest/ringbuffer)

# Usage

```go
package main

import (
	"fmt"

	"github.com/smallnest/ringbuffer"
)

func main() {
	rb := ringbuffer.New(1024)

	// write
	rb.Write([]byte("abcd"))
	fmt.Println(rb.Length())
	fmt.Println(rb.Free())

	// read
	buf := make([]byte, 4)
	rb.Read(buf)
	fmt.Println(string(buf))
}
```