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# /export2/deucetmp/bala/release_try/ACE_wrappers/ace/os_include/os_limits.h File Reference

`#include "ace/config-all.h"`
`#include "ace/os_include/os_unistd.h"`
`#include "ace/os_include/os_stdio.h"`

Include dependency graph for os_limits.h:

This graph shows which files directly or indirectly include this file:

## Defines
#define | howmany(x, y) (((x)+((y)-1))/(y))
#define | NAME_MAX 256
#define | MAXNAMELEN NAME_MAX
#define | HOST_NAME_MAX 256
#define | PATH_MAX 1024
#define | MAXPATHLEN PATH_MAX
#define | IOV_MAX 16
#define | ACE_IOV_MAX IOV_MAX
#define | PIPE_BUF 5120

## Detailed Description

implementation-defined constants

Id:
  os_limits.h,v 1.6 2003/11/01 11:15:19 dhinton Exp

Author:
  Don Hinton <dhinton@dresystems.com> , This code was originally in various places including ace/OS.h.

## Define Documentation

#define ACE_IOV_MAX IOV_MAX

#define HOST_NAME_MAX 256

#define howmany | ( | x,
|  | y |  | ) | (((x)+((y)-1))/(y))

#define IOV_MAX 16

#define MAXNAMELEN NAME_MAX

#define MAXPATHLEN PATH_MAX

#define NAME_MAX 256

#define PATH_MAX 1024

#define PIPE_BUF 5120