github.com/neatlab/neatio@v1.7.3-0.20220425043230-d903e92fcc75/utilities/common/fdlimit/fdlimit_freebsd.go (about)

     1  package fdlimit
     2  
     3  import "syscall"
     4  
     5  func Raise(max uint64) error {
     6  
     7  	var limit syscall.Rlimit
     8  	if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &limit); err != nil {
     9  		return err
    10  	}
    11  
    12  	limit.Cur = limit.Max
    13  	if limit.Cur > int64(max) {
    14  		limit.Cur = int64(max)
    15  	}
    16  	if err := syscall.Setrlimit(syscall.RLIMIT_NOFILE, &limit); err != nil {
    17  		return err
    18  	}
    19  	return nil
    20  }
    21  
    22  func Current() (int, error) {
    23  	var limit syscall.Rlimit
    24  	if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &limit); err != nil {
    25  		return 0, err
    26  	}
    27  	return int(limit.Cur), nil
    28  }
    29  
    30  func Maximum() (int, error) {
    31  	var limit syscall.Rlimit
    32  	if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &limit); err != nil {
    33  		return 0, err
    34  	}
    35  	return int(limit.Max), nil
    36  }