RepoMirrors
/
musl
mirror of git://git.musl-libc.org/musl
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
musl/include/sched.h

72 lines
1.7 KiB
C
Raw Normal View History

initial check-in, version 0.5.0
2011-02-12 05:22:29 +00:00
#ifndef _SCHED_H
#define _SCHED_H
#ifdef __cplusplus
extern "C" {
#endif
default features: make musl usable without feature test macros the old behavior of exposing nothing except plain ISO C can be obtained by defining __STRICT_ANSI__ or using a compiler option (such as -std=c99) that predefines it. the new default featureset is POSIX with XSI plus _BSD_SOURCE. any explicit feature test macros will inhibit the default. installation docs have also been updated to reflect this change.
2012-09-08 03:13:55 +00:00
#include <features.h>
initial check-in, version 0.5.0
2011-02-12 05:22:29 +00:00
#define __NEED_struct_timespec
#define __NEED_pid_t
#define __NEED_time_t
#include <bits/alltypes.h>
struct sched_param {
int sched_priority;
int sched_ss_low_priority;
struct timespec sched_ss_repl_period;
struct timespec sched_ss_init_budget;
int sched_ss_max_repl;
};
int sched_get_priority_max(int);
int sched_get_priority_min(int);
int sched_getparam(pid_t, struct sched_param *);
int sched_getscheduler(pid_t);
int sched_rr_get_interval(pid_t, struct timespec *);
int sched_setparam(pid_t, const struct sched_param *);
int sched_setscheduler(pid_t, int, const struct sched_param *);
int sched_yield(void);
#define SCHED_OTHER 0
#define SCHED_FIFO 1
#define SCHED_RR 2
add support for thread scheduling (POSIX TPS option) linux's sched_* syscalls actually implement the TPS (thread scheduling) functionality, not the PS (process scheduling) functionality which the sched_* functions are supposed to have. omitting support for the PS option (and having the sched_* interfaces fail with ENOSYS rather than omitting them, since some broken software assumes they exist) seems to be the only conforming way to do this on linux.
2012-11-11 20:38:04 +00:00
#define SCHED_BATCH 3
#define SCHED_IDLE 5
#define SCHED_RESET_ON_FORK 0x40000000
initial check-in, version 0.5.0
2011-02-12 05:22:29 +00:00
overhaul clone syscall wrapping several things are changed. first, i have removed the old __uniclone function signature and replaced it with the "standard" linux __clone/clone signature. this was necessary to expose clone to applications anyway, and it makes it easier to port __clone to new archs, since it's now testable independently of pthread_create. secondly, i have removed all references to the ugly ldt descriptor structure (i386 only) from the c code and pthread structure. in places where it is needed, it is now created on the stack just when it's needed, in assembly code. thus, the i386 __clone function takes the desired thread pointer as its argument, rather than an ldt descriptor pointer, just like on all other sane archs. this should not affect applications since there is really no way an application can use clone with threads/tls in a way that doesn't horribly conflict with and clobber the underlying implementation's use. applications are expected to use clone only for creating actual processes, possibly with new namespace features and whatnot.
2011-09-18 14:14:37 +00:00
#ifdef _GNU_SOURCE
#define CSIGNAL 0x000000ff
#define CLONE_VM 0x00000100
#define CLONE_FS 0x00000200
#define CLONE_FILES 0x00000400
#define CLONE_SIGHAND 0x00000800
#define CLONE_PTRACE 0x00002000
#define CLONE_VFORK 0x00004000
#define CLONE_PARENT 0x00008000
#define CLONE_THREAD 0x00010000
#define CLONE_NEWNS 0x00020000
#define CLONE_SYSVSEM 0x00040000
#define CLONE_SETTLS 0x00080000
#define CLONE_PARENT_SETTID 0x00100000
#define CLONE_CHILD_CLEARTID 0x00200000
#define CLONE_DETACHED 0x00400000
#define CLONE_UNTRACED 0x00800000
#define CLONE_CHILD_SETTID 0x01000000
#define CLONE_NEWUTS 0x04000000
#define CLONE_NEWIPC 0x08000000
#define CLONE_NEWUSER 0x10000000
#define CLONE_NEWPID 0x20000000
#define CLONE_NEWNET 0x40000000
#define CLONE_IO 0x80000000
int clone (int (*)(void *), void *, int, void *, ...);
add linux-specific unshare syscall wrapper
2012-04-29 23:54:03 +00:00
int unshare(int);
add acct, accept4, setns, and dup3 syscalls (linux extensions) based on patch by Justin Cormack
2012-09-09 00:22:08 +00:00
int setns(int, int);
overhaul clone syscall wrapping several things are changed. first, i have removed the old __uniclone function signature and replaced it with the "standard" linux __clone/clone signature. this was necessary to expose clone to applications anyway, and it makes it easier to port __clone to new archs, since it's now testable independently of pthread_create. secondly, i have removed all references to the ugly ldt descriptor structure (i386 only) from the c code and pthread structure. in places where it is needed, it is now created on the stack just when it's needed, in assembly code. thus, the i386 __clone function takes the desired thread pointer as its argument, rather than an ldt descriptor pointer, just like on all other sane archs. this should not affect applications since there is really no way an application can use clone with threads/tls in a way that doesn't horribly conflict with and clobber the underlying implementation's use. applications are expected to use clone only for creating actual processes, possibly with new namespace features and whatnot.
2011-09-18 14:14:37 +00:00
#endif
initial check-in, version 0.5.0
2011-02-12 05:22:29 +00:00
#ifdef __cplusplus
}
#endif
#endif