mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-26 12:41:05 +00:00
05b68e14b1
Many headers are expected to expose a subset of the type definitions
in time.h. time.h has a whole bunch of messy logic for conditionally
defining some its types and structs, but, as best I can tell, this
has never worked 100%. In particular, __need_timespec is ineffective
if _TIME_H has already been defined, which means that if you compile
#include <time.h>
#include <sched.h>
with e.g. -fsyntax-only -std=c89 -Wall -Wsystem-headers, you will get
In file included from test.c:2:0:
/usr/include/sched.h:74:57: warning: "struct timespec" declared inside
parameter list will not be visible outside of this definition or declaration
extern int sched_rr_get_interval (__pid_t __pid, struct timespec *__t) __THROW;
^~~~~~~~
And if you want to _use_ sched_rr_get_interval in a TU compiled that
way, you're hosed.
This patch replaces all of that with small bits/types/TYPE.h headers
as introduced earlier. time.h and bits/time.h are now *much* simpler,
and a lot of other headers are slightly simpler.
* time/time.h, bits/time.h, sysdeps/unix/sysv/linux/bits/time.h:
Remove all logic conditional on __need macros. Move all the
conditionally defined types to their own headers...
* time/bits/types/clock_t.h: Define clock_t here.
* time/bits/types/clockid_t.h: Define clockid_t here.
* time/bits/types/struct_itimerspec.h: Define struct itimerspec here.
* time/bits/types/struct_timespec.h: Define struct timespec here.
* time/bits/types/struct_timeval.h: Define struct timeval here.
* time/bits/types/struct_tm.h: Define struct tm here.
* time/bits/types/time_t.h: Define time_t here.
* time/bits/types/timer_t.h: Define timer_t here.
* time/Makefile: Install the new headers.
* bits/resource.h, io/fcntl.h, io/sys/poll.h, io/sys/stat.h
* io/utime.h, misc/sys/select.h, posix/sched.h, posix/sys/times.h
* posix/sys/types.h, resolv/netdb.h, rt/aio.h, rt/mqueue.h
* signal/signal.h, pthread/semaphore.h, sysdeps/nptl/pthread.h
* sysdeps/unix/sysv/linux/alpha/bits/resource.h
* sysdeps/unix/sysv/linux/alpha/sys/acct.h
* sysdeps/unix/sysv/linux/bits/resource.h
* sysdeps/unix/sysv/linux/bits/timex.h
* sysdeps/unix/sysv/linux/mips/bits/resource.h
* sysdeps/unix/sysv/linux/net/ppp_defs.h
* sysdeps/unix/sysv/linux/sparc/bits/resource.h
* sysdeps/unix/sysv/linux/sys/acct.h
* sysdeps/unix/sysv/linux/sys/timerfd.h
* sysvipc/sys/msg.h, sysvipc/sys/sem.h, sysvipc/sys/shm.h
* time/sys/time.h, time/sys/timeb.h
Use the new bits/types headers.
* include/time.h: Remove __need logic.
* include/bits/time.h
* include/bits/types/clock_t.h, include/bits/types/clockid_t.h
* include/bits/types/time_t.h, include/bits/types/timer_t.h
* include/bits/types/struct_itimerspec.h
* include/bits/types/struct_timespec.h
* include/bits/types/struct_timeval.h
* include/bits/types/struct_tm.h:
New wrapper headers.
130 lines
4.6 KiB
C
130 lines
4.6 KiB
C
/* Definitions for POSIX 1003.1b-1993 (aka POSIX.4) scheduling interface.
|
|
Copyright (C) 1996-2016 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef _SCHED_H
|
|
#define _SCHED_H 1
|
|
|
|
#include <features.h>
|
|
|
|
/* Get type definitions. */
|
|
#include <bits/types.h>
|
|
|
|
#define __need_size_t
|
|
#define __need_NULL
|
|
#include <stddef.h>
|
|
|
|
#include <bits/types/time_t.h>
|
|
#include <bits/types/struct_timespec.h>
|
|
#ifndef __USE_XOPEN2K
|
|
# include <time.h>
|
|
#endif
|
|
|
|
#ifndef __pid_t_defined
|
|
typedef __pid_t pid_t;
|
|
# define __pid_t_defined
|
|
#endif
|
|
|
|
|
|
/* Get system specific constant and data structure definitions. */
|
|
#include <bits/sched.h>
|
|
/* Define the real names for the elements of `struct sched_param'. */
|
|
#define sched_priority __sched_priority
|
|
|
|
|
|
__BEGIN_DECLS
|
|
|
|
/* Set scheduling parameters for a process. */
|
|
extern int sched_setparam (__pid_t __pid, const struct sched_param *__param)
|
|
__THROW;
|
|
|
|
/* Retrieve scheduling parameters for a particular process. */
|
|
extern int sched_getparam (__pid_t __pid, struct sched_param *__param) __THROW;
|
|
|
|
/* Set scheduling algorithm and/or parameters for a process. */
|
|
extern int sched_setscheduler (__pid_t __pid, int __policy,
|
|
const struct sched_param *__param) __THROW;
|
|
|
|
/* Retrieve scheduling algorithm for a particular purpose. */
|
|
extern int sched_getscheduler (__pid_t __pid) __THROW;
|
|
|
|
/* Yield the processor. */
|
|
extern int sched_yield (void) __THROW;
|
|
|
|
/* Get maximum priority value for a scheduler. */
|
|
extern int sched_get_priority_max (int __algorithm) __THROW;
|
|
|
|
/* Get minimum priority value for a scheduler. */
|
|
extern int sched_get_priority_min (int __algorithm) __THROW;
|
|
|
|
/* Get the SCHED_RR interval for the named process. */
|
|
extern int sched_rr_get_interval (__pid_t __pid, struct timespec *__t) __THROW;
|
|
|
|
|
|
#ifdef __USE_GNU
|
|
/* Access macros for `cpu_set'. */
|
|
# define CPU_SETSIZE __CPU_SETSIZE
|
|
# define CPU_SET(cpu, cpusetp) __CPU_SET_S (cpu, sizeof (cpu_set_t), cpusetp)
|
|
# define CPU_CLR(cpu, cpusetp) __CPU_CLR_S (cpu, sizeof (cpu_set_t), cpusetp)
|
|
# define CPU_ISSET(cpu, cpusetp) __CPU_ISSET_S (cpu, sizeof (cpu_set_t), \
|
|
cpusetp)
|
|
# define CPU_ZERO(cpusetp) __CPU_ZERO_S (sizeof (cpu_set_t), cpusetp)
|
|
# define CPU_COUNT(cpusetp) __CPU_COUNT_S (sizeof (cpu_set_t), cpusetp)
|
|
|
|
# define CPU_SET_S(cpu, setsize, cpusetp) __CPU_SET_S (cpu, setsize, cpusetp)
|
|
# define CPU_CLR_S(cpu, setsize, cpusetp) __CPU_CLR_S (cpu, setsize, cpusetp)
|
|
# define CPU_ISSET_S(cpu, setsize, cpusetp) __CPU_ISSET_S (cpu, setsize, \
|
|
cpusetp)
|
|
# define CPU_ZERO_S(setsize, cpusetp) __CPU_ZERO_S (setsize, cpusetp)
|
|
# define CPU_COUNT_S(setsize, cpusetp) __CPU_COUNT_S (setsize, cpusetp)
|
|
|
|
# define CPU_EQUAL(cpusetp1, cpusetp2) \
|
|
__CPU_EQUAL_S (sizeof (cpu_set_t), cpusetp1, cpusetp2)
|
|
# define CPU_EQUAL_S(setsize, cpusetp1, cpusetp2) \
|
|
__CPU_EQUAL_S (setsize, cpusetp1, cpusetp2)
|
|
|
|
# define CPU_AND(destset, srcset1, srcset2) \
|
|
__CPU_OP_S (sizeof (cpu_set_t), destset, srcset1, srcset2, &)
|
|
# define CPU_OR(destset, srcset1, srcset2) \
|
|
__CPU_OP_S (sizeof (cpu_set_t), destset, srcset1, srcset2, |)
|
|
# define CPU_XOR(destset, srcset1, srcset2) \
|
|
__CPU_OP_S (sizeof (cpu_set_t), destset, srcset1, srcset2, ^)
|
|
# define CPU_AND_S(setsize, destset, srcset1, srcset2) \
|
|
__CPU_OP_S (setsize, destset, srcset1, srcset2, &)
|
|
# define CPU_OR_S(setsize, destset, srcset1, srcset2) \
|
|
__CPU_OP_S (setsize, destset, srcset1, srcset2, |)
|
|
# define CPU_XOR_S(setsize, destset, srcset1, srcset2) \
|
|
__CPU_OP_S (setsize, destset, srcset1, srcset2, ^)
|
|
|
|
# define CPU_ALLOC_SIZE(count) __CPU_ALLOC_SIZE (count)
|
|
# define CPU_ALLOC(count) __CPU_ALLOC (count)
|
|
# define CPU_FREE(cpuset) __CPU_FREE (cpuset)
|
|
|
|
|
|
/* Set the CPU affinity for a task */
|
|
extern int sched_setaffinity (__pid_t __pid, size_t __cpusetsize,
|
|
const cpu_set_t *__cpuset) __THROW;
|
|
|
|
/* Get the CPU affinity for a task */
|
|
extern int sched_getaffinity (__pid_t __pid, size_t __cpusetsize,
|
|
cpu_set_t *__cpuset) __THROW;
|
|
#endif
|
|
|
|
__END_DECLS
|
|
|
|
#endif /* sched.h */
|