// leading blank lines, so that line numbers line up.
func commentText(g *ast.CommentGroup) string {
	pieces := make([]string, 0, len(g.List))
	for _, com := range g.List {
		c := com.Text
		// Remove comment markers.
		// The parser has given us exactly the comment text.
		switch c[1] {
		case '/':
			//-style comment (no newline at the end)
			c = c[2:] + "\n"
		case '*':
			/*-style comment */
			c = c[2 : len(c)-2]

	if err != nil {
		rebalanceLogIf(ctx, fmt.Errorf("invalid workers value err: %v, defaulting to %d", err, len(pool.sets)))
		workerSize = len(pool.sets)
	}

	// Each decom worker needs one List() goroutine/worker
	// add that many extra workers.
	workerSize += len(pool.sets)

	wk, err := workers.New(workerSize)
	if err != nil {
		return err
	}

	current      [][]string       // current block of results to be returned
	recordsRead  int              // number of records read in current slice
	input        chan *queueItem  // input for workers
	queue        chan *queueItem  // output from workers in order
	err          error            // global error state, only touched by Reader.Read
	bufferPool   sync.Pool        // pool of []byte objects for input

## 复制 - 进程和内存

对于 FastAPI 应用程序，使用像 Uvicorn 这样的服务器程序，在**一个进程**中运行一次就可以同时为多个客户端提供服务。

但在许多情况下，您会希望同时运行多个工作进程。

### 多进程 - Workers

如果您的客户端数量多于单个进程可以处理的数量（例如，如果虚拟机不是太大），并且服务器的 CPU 中有 **多个核心**，那么您可以让 **多个进程** 运行 同时处理同一个应用程序，并在它们之间分发所有请求。

当您运行同一 API 程序的**多个进程**时，它们通常称为 **workers**。

### 工作进程和端口

还记得文档 [About HTTPS](https.md){.internal-link target=_blank} 中只有一个进程可以侦听服务器中的端口和 IP 地址的一种组合吗？

现在仍然是对的。

}

// FileWithLineNum return the file name and line number of the current file
func FileWithLineNum() string {
	pcs := [13]uintptr{}
	// the third caller usually from gorm internal
	len := runtime.Callers(3, pcs[:])
	frames := runtime.CallersFrames(pcs[:len])
	for i := 0; i < len; i++ {
		// second return value is "more", not "ok"
		frame, _ := frames.Next()
		if (!strings.HasPrefix(frame.File, gormSourceDir) ||

	}

	if cap(b) != bp.wcap {
		// someone tried to put back buffer which is not part of this buffer pool
		// we simply don't put this back into pool, a modified buffer provided
		// by this package is no more usable, callers make sure to not modify
		// the capacity of the buffer.
		return
	}

	select {
	case bp.c <- b[:bp.w]:
		// buffer went back into pool
	default:
		// buffer didn't go back into pool, just discard
	}
}

	MD5Hex     string
	SHA256Hex  string
	Size       int64
	ActualSize int64
	DisableMD5 bool
	ForceMD5   []byte
}

// NewReaderWithOpts is like NewReader but takes `Options` as argument, allowing
// callers to indicate if they want to disable md5sum checksum.
func NewReaderWithOpts(ctx context.Context, src io.Reader, opts Options) (*Reader, error) {
	// return hard limited reader

./mc admin policy attach myminio/ lake --user=minio12345

./mc mb -l myminio/versioned

./mc mirror internal myminio/versioned/ --quiet >/dev/null

## Soft delete (creates delete markers)
./mc rm -r --force myminio/versioned >/dev/null

## mirror again to create another set of version on top
./mc mirror internal myminio/versioned/ --quiet >/dev/null

./mc mb myminio2/testbucket/
./mc version enable myminio2/testbucket/

./mc replicate add myminio1/testbucket --remote-bucket http://minioadmin:minioadmin@localhost:9002/testbucket/ --priority 1

# Test replication of delete markers and permanent deletes

./mc cp README.md myminio1/testbucket/dir/file
./mc cp README.md myminio1/testbucket/dir/file

sleep 1s

echo "=== myminio1"
./mc ls --versions myminio1/testbucket/dir/file

./mc mb -l myminio/versioned

./mc encrypt set sse-s3 myminio/versioned

./mc mirror internal myminio/versioned/ --quiet >/dev/null

## Soft delete (creates delete markers)
./mc rm -r --force myminio/versioned >/dev/null

## mirror again to create another set of version on top
./mc mirror internal myminio/versioned/ --quiet >/dev/null