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https://git.proxmox.com/git/wasi-libc
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b9b64a695a
Upcoming WASI snapshots omit the `PROCESS_CPUTIME` clock, since WASI has no inherent concept of processes, and since implementations which don't use a process for each instance don't have a way to implement it efficiently. However, `clock`, `times`, and `getrusage` are useful functions, so provide optional emulated version of them, using the `MONOTONIC` clock. This means these implementations will measure not just the program's own CPU time, but also time spent suspended while other programs are running. Due to this difference in behavior, put these implementations behind a flag. Users must pass `-D_WASI_EMULATED_PROCESS_CLOCK` and link with `-lwasi-emulated-process-clocks` to enable them.
127 lines
2.6 KiB
C
127 lines
2.6 KiB
C
#ifndef _WASI_EMULATED_PROCESS_CLOCKS
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#error WASI lacks process-associated clocks; to enable emulation of the `getrusage` function using \
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the wall clock, which isn't sensitive to whether the program is running or suspended, \
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compile with -D_WASI_EMULATED_PROCESS_CLOCKS and link with -lwasi-emulated-process-clocks
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#else
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#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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#ifdef __wasilibc_unmodified_upstream /* Use alternate WASI libc headers */
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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_RTTIME 15
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#define RLIMIT_NLIMITS 16
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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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#else
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#include <__header_sys_resource.h>
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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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#endif
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