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- /****************************************************************************
- *
- * $Source: /usr/local/cvsroot/gccsdk/unixlib/source/clib/sys/resource.h,v $
- * $Date: 2004/09/17 18:39:54 $
- * $Revision: 1.6 $
- * $State: Exp $
- * $Author: peter $
- *
- ***************************************************************************/
-
- #ifndef __SYS_RESOURCE_H
-
- #if !defined __need_rusage
- #define __SYS_RESOURCE_H
- #endif
-
- #ifndef __UNIXLIB_TYPES_H
- #include <unixlib/types.h>
- #endif
-
- #define __need_timeval
- #include <sys/time.h>
-
- #if !defined __rusage_defined && (defined __SYS_RESOURCE_H || defined __need_rusage)
- #define __rusage_defined
- /* Structure which says how much of each resource has been used. */
- struct rusage
- {
- /* Total amount of user time used. */
- struct timeval ru_utime;
- /* Total amount of system time used. */
- struct timeval ru_stime;
- /* Maximum resident set size (in kilobytes). */
- int ru_maxrss;
- /* Amount of sharing of text segment memory
- with other processes (kilobyte-seconds). */
- int ru_ixrss;
- /* Amount of data segment memory used (kilobyte-seconds). */
- int ru_idrss;
- /* Amount of stack memory used (kilobyte-seconds). */
- int ru_isrss;
- /* Number of soft page faults (i.e. those serviced by reclaiming
- a page from the list of pages awaiting reallocation. */
- int ru_minflt;
- /* Number of hard page faults (i.e. those that required I/O). */
- int ru_majflt;
- /* Number of times a process was swapped out of physical memory. */
- int ru_nswap;
- /* Number of input operations via the file system. Note: This
- and `ru_oublock' do not include operations with the cache. */
- int ru_inblock;
- /* Number of output operations via the file system. */
- int ru_oublock;
- /* Number of IPC messages sent. */
- int ru_msgsnd;
- /* Number of IPC messages received. */
- int ru_msgrcv;
- /* Number of signals delivered. */
- int ru_nsignals;
- /* Number of voluntary context switches, i.e. because the process
- gave up the process before it had to (usually to wait for some
- resource to be available). */
- int ru_nvcsw;
- /* Number of involuntary context switches, i.e. a higher priority process
- became runnable or the current process used up its time slice. */
- int ru_nivcsw;
- };
- #endif
- #undef __need_rusage
-
- #ifdef __SYS_RESOURCE_H
-
- #ifndef __UNIXLIB_FEATURES_h
- #include <unixlib/features.h>
- #endif
-
- __BEGIN_DECLS
-
- typedef __rlim_t rlim_t;
-
- enum __rlimit_resource
- {
- RLIMIT_CPU,
- #define RLIMIT_CPU RLIMIT_CPU
- RLIMIT_FSIZE,
- #define RLIMIT_FSIZE RLIMIT_FSIZE
- RLIMIT_CORE,
- #define RLIMIT_CORE RLIMIT_CORE
- RLIMIT_DATA,
- #define RLIMIT_DATA RLIMIT_DATA
- RLIMIT_STACK,
- #define RLIMIT_STACK RLIMIT_STACK
- RLIMIT_RSS,
- #define RLIMIT_RSS RLIMIT_RSS
- RLIMIT_MEMLOCK,
- #define RLIMIT_MEMLOCK RLIMIT_MEMLOCK
- RLIMIT_NPROC,
- #define RLIMIT_NPROC RLIMIT_NPROC
- RLIMIT_NOFILE,
- RLIMIT_OFILE = RLIMIT_NOFILE,
- #define RLIMIT_NOFILE RLIMIT_NOFILE
- #define RLIMIT_OFILE RLIMIT_OFILE
- RLIMIT_NLIMITS
- #define RLIMIT_NLIMITS RLIMIT_NLIMITS
- };
-
- struct rlimit
- {
- /* The current (soft) limit. */
- int rlim_cur;
- /* The hard limit. */
- int rlim_max;
- };
-
- /* Value used to indicate that there is no limit. */
- #define RLIM_INFINITY 0x7fffffff
-
- /* Put the soft and hard limits for RESOURCE in *RLIMITS.
- Returns 0 if successful, -1 if not (and sets errno). */
- extern int getrlimit (enum __rlimit_resource, struct rlimit *) __THROW;
-
- /* Set the soft and hard limits for RESOURCE to *RLIMITS.
- Only the super-user can increase hard limits.
- Return 0 if successful, -1 if not (and sets errno). */
- extern int setrlimit (enum __rlimit_resource, const struct rlimit *) __THROW;
-
- /* Whose usage statistics do you want? */
- enum __rusage_who
- /* The macro definitions are necessary because some programs want
- to test for operating system features with #ifdef RUSAGE_SELF.
- In ANSI C the reflexive definition is a no-op. */
- {
- /* The calling process. */
- RUSAGE_SELF = 0,
- #define RUSAGE_SELF RUSAGE_SELF
- /* All of its terminated child processes. */
- RUSAGE_CHILDREN = -1
- #define RUSAGE_CHILDREN RUSAGE_CHILDREN
- };
-
- /* Return resource usage information on a process. */
- extern int getrusage (enum __rusage_who, struct rusage *) __THROW;
-
- /* Function depends on first parameter.
- 1 = Return the limit on the size of a file, in units of 512 bytes.
- 2 = Set the limit on the size of a file to new limit. Only the
- super-user can increase the limit.
- 3 = Return the maximum possible address of the data segment.
- 4 = Return the maximum number of files that the calling process can open. */
- extern long int ulimit (int, int) __THROW;
-
-
- /* Priority limits. */
- #define PRIO_MIN -20 /* Minimum priority a process can have. */
- #define PRIO_MAX 20 /* Maximum priority a process can have. */
-
- /* The type of the 'which' argument to `getpriority' and `setpriority',
- indicating what flavor of entity the WHO argument specifies. */
- enum __priority_which
- {
- PRIO_PROCESS = 0, /* WHO is a process ID. */
- PRIO_PGRP = 1, /* WHO is a process group ID. */
- PRIO_USER = 2 /* WHO is a user ID. */
- };
-
- /* Return the highest priority of any process. */
- extern int getpriority (enum __priority_which, int) __THROW;
-
- /* Set the priority of all processes. */
- extern int setpriority (enum __priority_which, int, int) __THROW;
-
- /* Alter the priority of the current process by 'increment'. */
- extern int nice (int __increment) __THROW;
-
- __END_DECLS
-
- #endif /* resource.h */
- #endif /* ! __SYS_RESOURCE_H */
-