Proc (Apache Tomcat 9.0.117 API Documentation)
Description: declaration: package: org.apache.tomcat.jni, class: Proc

# Class Proc

java.lang.Object
org.apache.tomcat.jni.Proc

@Deprecated public class Proc extends Object
Deprecated.
The scope of the APR/Native Library will be reduced in Tomcat 9.1.x / Tomcat Native 2.x and has been reduced in Tomcat 10.1.x / Tomcat Native 2.x onwards to only include those components required to provide OpenSSL integration with the NIO and NIO2 connectors.
Proc.

- ## Field Summary

  Fields
  Modifier and Type
  Field
  Description
  `static final int`
  `APR_CHILD_BLOCK`
  Deprecated.
  `static final int`
  `APR_FULL_BLOCK`
  Deprecated.
  `static final int`
  `APR_FULL_NONBLOCK`
  Deprecated.
  `static final int`
  `APR_JUST_WAIT`
  Deprecated.
  wait forever for the process to complete
  `static final int`
  `APR_KILL_AFTER_TIMEOUT`
  Deprecated.
  SIGTERM, wait 3 seconds, SIGKILL
  `static final int`
  `APR_KILL_ALWAYS`
  Deprecated.
  process is sent SIGKILL on apr_pool_t cleanup
  `static final int`
  `APR_KILL_NEVER`
  Deprecated.
  process is never sent any signals
  `static final int`
  `APR_KILL_ONLY_ONCE`
  Deprecated.
  send SIGTERM and then wait
  `static final int`
  `APR_LIMIT_CPU`
  Deprecated.
  `static final int`
  `APR_LIMIT_MEM`
  Deprecated.
  `static final int`
  `APR_LIMIT_NOFILE`
  Deprecated.
  `static final int`
  `APR_LIMIT_NPROC`
  Deprecated.
  `static final int`
  `APR_NO_PIPE`
  Deprecated.
  `static final int`
  `APR_NOWAIT`
  Deprecated.
  do not wait -- just see if it has finished
  `static final int`
  `APR_OC_REASON_DEATH`
  Deprecated.
  child has died, caller must call unregister still
  `static final int`
  `APR_OC_REASON_LOST`
  Deprecated.
  somehow the child exited without us knowing ... buggy os?
  `static final int`
  `APR_OC_REASON_RESTART`
  Deprecated.
  a restart is occurring, perform any necessary cleanup (including sending a special signal to child)
  `static final int`
  `APR_OC_REASON_RUNNING`
  Deprecated.
  a health check is occurring, for most maintenance functions this is a no-op.
  `static final int`
  `APR_OC_REASON_UNREGISTER`
  Deprecated.
  unregister has been called, do whatever is necessary (including kill the child)
  `static final int`
  `APR_OC_REASON_UNWRITABLE`
  Deprecated.
  write_fd is unwritable
  `static final int`
  `APR_PARENT_BLOCK`
  Deprecated.
  `static final int`
  `APR_PROC_DETACH_DAEMONIZE`
  Deprecated.
  Do not detach
  `static final int`
  `APR_PROC_DETACH_FOREGROUND`
  Deprecated.
  `static final int`
  `APR_PROC_EXIT`
  Deprecated.
  process exited normally
  `static final int`
  `APR_PROC_SIGNAL`
  Deprecated.
  process exited due to a signal
  `static final int`
  `APR_PROC_SIGNAL_CORE`
  Deprecated.
  process exited and dumped a core file
  `static final int`
  `APR_PROGRAM`
  Deprecated.
  invoke the program directly, no copied env
  `static final int`
  `APR_PROGRAM_ENV`
  Deprecated.
  invoke the program, replicating our environment
  `static final int`
  `APR_PROGRAM_PATH`
  Deprecated.
  find program on PATH, use our environment
  `static final int`
  `APR_SHELLCM`
  Deprecated.
  use the shell to invoke the program
  `static final int`
  `APR_SHELLCMD_ENV`
  Deprecated.
  use the shell to invoke the program, replicating our environment
  `static final int`
  `APR_WAIT`
  Deprecated.
  wait for the specified process to finish
  `static final int`
  `MAX_ARGS_SIZE`
  Deprecated.
  Detach
  `static final int`
  `MAX_ENV_SIZE`
  Deprecated.

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `Proc()`
  Deprecated.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `static long`
  `alloc(long cont)`
  Deprecated.
  Allocate apr_proc_t structure from pool This is not an apr function.
  `static int`
  `create(long proc, String progname, String[] args, String[] env, long attr, long pool)`
  Deprecated.
  Create a new process and execute a new program within that process.
  `static int`
  `detach(int daemonize)`
  Deprecated.
  Detach the process from the controlling terminal.
  `static int`
  `fork(long[] proc, long cont)`
  Deprecated.
  This is currently the only non-portable call in APR.
  `static int`
  `kill(long proc, int sig)`
  Deprecated.
  Terminate a process.
  `static int`
  `wait(long proc, int[] exit, int waithow)`
  Deprecated.
  Wait for a child process to die
  `static int`
  `waitAllProcs(long proc, int[] exit, int waithow, long pool)`
  Deprecated.
  Wait for any current child process to die and return information about that child.

  ### Methods inherited from class Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- ## Field Details

  - ### APR_SHELLCM

    public static final int APR_SHELLCM
    Deprecated.
    use the shell to invoke the program
    See Also:
      - Constant Field Values

  - ### APR_PROGRAM

    public static final int APR_PROGRAM
    Deprecated.
    invoke the program directly, no copied env
    See Also:
      - Constant Field Values

  - ### APR_PROGRAM_ENV

    public static final int APR_PROGRAM_ENV
    Deprecated.
    invoke the program, replicating our environment
    See Also:
      - Constant Field Values

  - ### APR_PROGRAM_PATH

    public static final int APR_PROGRAM_PATH
    Deprecated.
    find program on PATH, use our environment
    See Also:
      - Constant Field Values

  - ### APR_SHELLCMD_ENV

    public static final int APR_SHELLCMD_ENV
    Deprecated.
    use the shell to invoke the program, replicating our environment
    See Also:
      - Constant Field Values

  - ### APR_WAIT

    public static final int APR_WAIT
    Deprecated.
    wait for the specified process to finish
    See Also:
      - Constant Field Values

  - ### APR_NOWAIT

    public static final int APR_NOWAIT
    Deprecated.
    do not wait -- just see if it has finished
    See Also:
      - Constant Field Values

  - ### APR_PROC_EXIT

    public static final int APR_PROC_EXIT
    Deprecated.
    process exited normally
    See Also:
      - Constant Field Values

  - ### APR_PROC_SIGNAL

    public static final int APR_PROC_SIGNAL
    Deprecated.
    process exited due to a signal
    See Also:
      - Constant Field Values

  - ### APR_PROC_SIGNAL_CORE

    public static final int APR_PROC_SIGNAL_CORE
    Deprecated.
    process exited and dumped a core file
    See Also:
      - Constant Field Values

  - ### APR_NO_PIPE

    public static final int APR_NO_PIPE
    Deprecated.
    See Also:
      - Constant Field Values

  - ### APR_FULL_BLOCK

    public static final int APR_FULL_BLOCK
    Deprecated.
    See Also:
      - Constant Field Values

  - ### APR_FULL_NONBLOCK

    public static final int APR_FULL_NONBLOCK
    Deprecated.
    See Also:
      - Constant Field Values

  - ### APR_PARENT_BLOCK

    public static final int APR_PARENT_BLOCK
    Deprecated.
    See Also:
      - Constant Field Values

  - ### APR_CHILD_BLOCK

    public static final int APR_CHILD_BLOCK
    Deprecated.
    See Also:
      - Constant Field Values

  - ### APR_LIMIT_CPU

    public static final int APR_LIMIT_CPU
    Deprecated.
    See Also:
      - Constant Field Values

  - ### APR_LIMIT_MEM

    public static final int APR_LIMIT_MEM
    Deprecated.
    See Also:
      - Constant Field Values

  - ### APR_LIMIT_NPROC

    public static final int APR_LIMIT_NPROC
    Deprecated.
    See Also:
      - Constant Field Values

  - ### APR_LIMIT_NOFILE

    public static final int APR_LIMIT_NOFILE
    Deprecated.
    See Also:
      - Constant Field Values

  - ### APR_OC_REASON_DEATH

    public static final int APR_OC_REASON_DEATH
    Deprecated.
    child has died, caller must call unregister still
    See Also:
      - Constant Field Values

  - ### APR_OC_REASON_UNWRITABLE

    public static final int APR_OC_REASON_UNWRITABLE
    Deprecated.
    write_fd is unwritable
    See Also:
      - Constant Field Values

  - ### APR_OC_REASON_RESTART

    public static final int APR_OC_REASON_RESTART
    Deprecated.
    a restart is occurring, perform any necessary cleanup (including sending a special signal to child)
    See Also:
      - Constant Field Values

  - ### APR_OC_REASON_UNREGISTER

    public static final int APR_OC_REASON_UNREGISTER
    Deprecated.
    unregister has been called, do whatever is necessary (including kill the child)
    See Also:
      - Constant Field Values

  - ### APR_OC_REASON_LOST

    public static final int APR_OC_REASON_LOST
    Deprecated.
    somehow the child exited without us knowing ... buggy os?
    See Also:
      - Constant Field Values

  - ### APR_OC_REASON_RUNNING

    public static final int APR_OC_REASON_RUNNING
    Deprecated.
    a health check is occurring, for most maintenance functions this is a no-op.
    See Also:
      - Constant Field Values

  - ### APR_KILL_NEVER

    public static final int APR_KILL_NEVER
    Deprecated.
    process is never sent any signals
    See Also:
      - Constant Field Values

  - ### APR_KILL_ALWAYS

    public static final int APR_KILL_ALWAYS
    Deprecated.
    process is sent SIGKILL on apr_pool_t cleanup
    See Also:
      - Constant Field Values

  - ### APR_KILL_AFTER_TIMEOUT

    public static final int APR_KILL_AFTER_TIMEOUT
    Deprecated.
    SIGTERM, wait 3 seconds, SIGKILL
    See Also:
      - Constant Field Values

  - ### APR_JUST_WAIT

    public static final int APR_JUST_WAIT
    Deprecated.
    wait forever for the process to complete
    See Also:
      - Constant Field Values

  - ### APR_KILL_ONLY_ONCE

    public static final int APR_KILL_ONLY_ONCE
    Deprecated.
    send SIGTERM and then wait
    See Also:
      - Constant Field Values

  - ### APR_PROC_DETACH_FOREGROUND

    public static final int APR_PROC_DETACH_FOREGROUND
    Deprecated.
    See Also:
      - Constant Field Values

  - ### APR_PROC_DETACH_DAEMONIZE

    public static final int APR_PROC_DETACH_DAEMONIZE
    Deprecated.
    Do not detach
    See Also:
      - Constant Field Values

  - ### MAX_ARGS_SIZE

    public static final int MAX_ARGS_SIZE
    Deprecated.
    Detach
    See Also:
      - Constant Field Values

  - ### MAX_ENV_SIZE

    public static final int MAX_ENV_SIZE
    Deprecated.
    See Also:
      - Constant Field Values

- ## Constructor Details

  - ### Proc

    public Proc()
    Deprecated.

- ## Method Details

  - ### alloc

    public static long alloc(long cont)
    Deprecated.
    Allocate apr_proc_t structure from pool This is not an apr function.
    Parameters:
      `cont` - The pool to use.
    Returns:
      the pointer

  - ### fork

    public static int fork(long[] proc, long cont)
    Deprecated.
    This is currently the only non-portable call in APR. This executes a standard unix fork.
    Parameters:
      `proc` - The resulting process handle.
      `cont` - The pool to use.
    Returns:
      APR_INCHILD for the child, and APR_INPARENT for the parent or an error.

  - ### create

    public static int create(long proc, String progname, String[] args, String[] env, long attr, long pool)
    Deprecated.
    Create a new process and execute a new program within that process. This function returns without waiting for the new process to terminate; use apr_proc_wait for that.
    Parameters:
      `proc` - The process handle
      `progname` - The program to run
      `args` - The arguments to pass to the new program. The first one should be the program name.
      `env` - The new environment table for the new process. This should be a list of NULL-terminated strings. This argument is ignored for APR_PROGRAM_ENV, APR_PROGRAM_PATH, and APR_SHELLCMD_ENV types of commands.
      `attr` - The procattr we should use to determine how to create the new process
      `pool` - The pool to use.
    Returns:
      The resulting process handle.

  - ### wait

    public static int wait(long proc, int[] exit, int waithow)
    Deprecated.
    Wait for a child process to die
    Parameters:
      `proc` - The process handle that corresponds to the desired child process
      `exit` - exit[0] The returned exit status of the child, if a child process dies, or the signal that caused the child to die. On platforms that don't support obtaining this information, the status parameter will be returned as APR_ENOTIMPL. exit[1] Why the child died, the bitwise or of:

          APR_PROC_EXIT         -- process terminated normally
          APR_PROC_SIGNAL       -- process was killed by a signal
          APR_PROC_SIGNAL_CORE  -- process was killed by a signal, and
                                   generated a core dump.

      `waithow` - How should we wait. One of:

          APR_WAIT   -- block until the child process dies.
          APR_NOWAIT -- return immediately regardless of if the
                        child is dead or not.

    Returns:
      The childs status is in the return code to this process. It is one of:

          APR_CHILD_DONE     -- child is no longer running.
          APR_CHILD_NOTDONE  -- child is still running.

  - ### waitAllProcs

    public static int waitAllProcs(long proc, int[] exit, int waithow, long pool)
    Deprecated.
    Wait for any current child process to die and return information about that child.
    Parameters:
      `proc` - Pointer to NULL on entry, will be filled out with child's information
      `exit` - exit[0] The returned exit status of the child, if a child process dies, or the signal that caused the child to die. On platforms that don't support obtaining this information, the status parameter will be returned as APR_ENOTIMPL. exit[1] Why the child died, the bitwise or of:

          APR_PROC_EXIT         -- process terminated normally
          APR_PROC_SIGNAL       -- process was killed by a signal
          APR_PROC_SIGNAL_CORE  -- process was killed by a signal, and
                                   generated a core dump.

      `waithow` - How should we wait. One of:

          APR_WAIT   -- block until the child process dies.
          APR_NOWAIT -- return immediately regardless of if the
                        child is dead or not.

      `pool` - Pool to allocate child information out of.
    Returns:
      the operation status

  - ### detach

    public static int detach(int daemonize)
    Deprecated.
    Detach the process from the controlling terminal.
    Parameters:
      `daemonize` - set to non-zero if the process should daemonize and become a background process, else it will stay in the foreground.
    Returns:
      the operation status

  - ### kill

    public static int kill(long proc, int sig)
    Deprecated.
    Terminate a process.
    Parameters:
      `proc` - The process to terminate.
      `sig` - How to kill the process.
    Returns:
      the operation status