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1febd21d3f
a _REDIR_TIME64 macro is introduced, which the arch's alltypes.h is expected to define, to control redirection of symbol names for interfaces that involve time_t and derived types. this ensures that object files will only be linked to libc interfaces matching the ABI whose headers they were compiled against. along with time32 compat shims, which will be introduced separately, the redirection also makes it possible for a single libc (static or shared) to be used with object files produced with either the old (32-bit time_t) headers or the new ones after 64-bit time_t switchover takes place. mixing of such object files (or shared libraries) in the same program will also be possible, but must be done with care; ABI between libc and a consumer of the libc interfaces is guaranteed to match by the the symbol name redirection, but pairwise ABI between consumers of libc that define interfaces between each other in terms of time_t is not guaranteed to match. this change adds a dependency on an additional "GNU C" feature to the public headers for existing 32-bit archs, which is generally undesirable; however, the feature is one which glibc has depended on for a long time, and thus which any viable alternative compiler is going to need to provide. 64-bit archs are not affected, nor will future 32-bit archs be, regardless of whether they are "new" on the kernel side (e.g. riscv32) or just newly-added (e.g. a new sparc or xtensa port). the same applies to newly-added ABIs for existing machine-level archs.
116 lines
2.2 KiB
C
116 lines
2.2 KiB
C
#ifndef _SYS_RESOURCE_H
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#define _SYS_RESOURCE_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <features.h>
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#include <sys/time.h>
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#define __NEED_id_t
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#ifdef _GNU_SOURCE
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#define __NEED_pid_t
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#endif
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#include <bits/alltypes.h>
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#include <bits/resource.h>
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typedef unsigned long long rlim_t;
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struct rlimit {
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rlim_t rlim_cur;
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rlim_t rlim_max;
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};
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struct rusage {
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struct timeval ru_utime;
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struct timeval ru_stime;
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/* linux extentions, but useful */
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long ru_maxrss;
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long ru_ixrss;
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long ru_idrss;
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long ru_isrss;
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long ru_minflt;
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long ru_majflt;
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long ru_nswap;
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long ru_inblock;
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long ru_oublock;
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long ru_msgsnd;
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long ru_msgrcv;
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long ru_nsignals;
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long ru_nvcsw;
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long ru_nivcsw;
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/* room for more... */
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long __reserved[16];
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};
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int getrlimit (int, struct rlimit *);
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int setrlimit (int, const struct rlimit *);
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int getrusage (int, struct rusage *);
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int getpriority (int, id_t);
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int setpriority (int, id_t, int);
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#ifdef _GNU_SOURCE
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int prlimit(pid_t, int, const struct rlimit *, struct rlimit *);
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#define prlimit64 prlimit
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#endif
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#define PRIO_MIN (-20)
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#define PRIO_MAX 20
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#define PRIO_PROCESS 0
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#define PRIO_PGRP 1
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#define PRIO_USER 2
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#define RUSAGE_SELF 0
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#define RUSAGE_CHILDREN (-1)
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#define RUSAGE_THREAD 1
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#define RLIM_INFINITY (~0ULL)
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#define RLIM_SAVED_CUR RLIM_INFINITY
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#define RLIM_SAVED_MAX RLIM_INFINITY
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#define RLIMIT_CPU 0
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#define RLIMIT_FSIZE 1
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#define RLIMIT_DATA 2
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#define RLIMIT_STACK 3
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#define RLIMIT_CORE 4
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#ifndef RLIMIT_RSS
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#define RLIMIT_RSS 5
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#define RLIMIT_NPROC 6
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#define RLIMIT_NOFILE 7
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#define RLIMIT_MEMLOCK 8
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#define RLIMIT_AS 9
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#endif
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#define RLIMIT_LOCKS 10
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#define RLIMIT_SIGPENDING 11
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#define RLIMIT_MSGQUEUE 12
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#define RLIMIT_NICE 13
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#define RLIMIT_RTPRIO 14
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#define RLIMIT_NLIMITS 15
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#define RLIM_NLIMITS RLIMIT_NLIMITS
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#if defined(_LARGEFILE64_SOURCE) || defined(_GNU_SOURCE)
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#define RLIM64_INFINITY RLIM_INFINITY
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#define RLIM64_SAVED_CUR RLIM_SAVED_CUR
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#define RLIM64_SAVED_MAX RLIM_SAVED_MAX
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#define getrlimit64 getrlimit
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#define setrlimit64 setrlimit
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#define rlimit64 rlimit
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#define rlim64_t rlim_t
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#endif
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#if _REDIR_TIME64
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__REDIR(getrusage, __getrusage_time64);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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