Package one.nio.os

Class Proc

java.lang.Object
one.nio.os.Proc
public final class Proc extends Object

  • Field Details

  • Constructor Details

    • Proc

      public Proc()

  • Method Details

    • gettid

      public static int gettid()

    • getpid

      public static int getpid()

    • getppid

      public static int getppid()

    • sched_setaffinity

      public static int sched_setaffinity(int pid, long mask)

    • sched_getaffinity

      public static long sched_getaffinity(int pid)

    • setAffinity

      public static int setAffinity(int pid, long[] mask)
      The same as above, but allows an arbitrary long mask

    • getAffinity

      public static long[] getAffinity(int pid)

    • setDedicatedCpu

      public static void setDedicatedCpu(int pid, int cpu)

    • ioprio_set

      public static int ioprio_set(int pid, int ioprio)

    • ioprio_get

      public static int ioprio_get(int pid)

    • sched_setscheduler

      public static int sched_setscheduler(int pid, int policy)
      Parameters:
      pid - pid or tid. 0 for current thread
      Returns:
      0 on success or errno on failure

    • sched_getscheduler

      public static int sched_getscheduler(int pid)
      Parameters:
      pid - pid or tid. 0 for current thread
      Returns:
      the policy for the thread (a nonnegative integer)

    • getpriority

      public static int getpriority(int pid)
      Obtain the nice value of a process
      Parameters:
      pid - pid or tid. 0 for current thread
      Returns:
      an integer in the range -{NZERO} to {NZERO}-1. Otherwise, -1 shall be returned and errno set to indicate the error.

    • setpriority

      public static int setpriority(int pid, int value)
      Set the nice value of a process to value+ {NZERO}. The default nice value is {NZERO}; lower nice values shall cause more favorable scheduling. While the range of valid nice values is [0,{NZERO}*2-1], implementations may enforce more restrictive limits. If value+ {NZERO} is less than the system's lowest supported nice value, setpriority() shall set the nice value to the lowest supported value; if value+ {NZERO} is greater than the system's highest supported nice value, setpriority() shall set the nice value to the highest supported value.
      Parameters:
      pid - pid or tid. 0 for current thread
      Returns:
      0 on success; otherwise, -1 shall be returned and errno set to indicate the error.

    • setns

      public static int setns(int fd, int nstype)
      Parameters:
      fd - is a file descriptor referring to one of the namespace entries in a /proc/[pid]/ns/ directory
      nstype - specifies which type of namespace the calling thread may be reassociated with. One of CLONE_* constants or 0 to allow any type of namespace to be joined
      Returns:
      0 on success or errno on failure