diff options
Diffstat (limited to 'devel/p5-BSD-Resource/pkg-descr')
-rw-r--r-- | devel/p5-BSD-Resource/pkg-descr | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/devel/p5-BSD-Resource/pkg-descr b/devel/p5-BSD-Resource/pkg-descr new file mode 100644 index 000000000000..5c23f43e38ad --- /dev/null +++ b/devel/p5-BSD-Resource/pkg-descr @@ -0,0 +1,79 @@ + getrusage + + For a detailed description about the values returned by + getrusage() please consult your usual C programming + documentation about getrusage() and also the header file + sys/resource.h. The $ru_who argument is either + RUSAGE_SELF (the current process) or RUSAGE_CHILDREN (all + the child processes of the current process). On some + (very few) systems (those supporting both getrusage() and + the POSIX threads) there is also RUSAGE_THREAD. The + BSD::Resource supports the _THREAD flag if it is present + but understands nothing about the POSIX threads + themselves. + + Note 1: officially HP-UX 9 does not support getrusage() at + all but for the time being, it does seem to. + + Note 2: Solaris claims in sys/rusage.h that the ixrss and + the isrss fields are always zero. + + getrlimit + + Processes have soft and hard resource limits. At soft + limit they receive a signal (XCPU or XFSZ, normally) they + can trap and handle and at hard limit they will be + ruthlessly killed by the KILL signal. The $resource + argument can be one of + + RLIMIT_CPU RLIMIT_FSIZE + RLIMIT_DATA RLIMIT_STACK RLIMIT_CORE RLIMIT_RSS + RLIMIT_NOFILE RLIMIT_OPEN_MAX + RLIMIT_AS RLIMIT_VMEM + + The last two pairs (NO_FILE, OPEN_MAX) and (AS, VMEM) mean + the same, the former being the BSD names and the latter + SVR4 names. Two meta-resource-symbols might exist + + RLIM_NLIMITS + RLIM_INFINITY + + NLIMITS being the number of possible (but not necessarily + fully supported) resource limits, INFINITY being useful in + setrlimit(). + + NOTE: the level of 'support' for a resource varies. Not + all the systems + + a) even recognise all those limits + b) really track the consumption of a resource + c) care (send those signals) if a resource limit get exceeded + + Again, please consult your usual C programming + documentation. + + One notable exception: officially HP-UX 9 does not support + getrlimit() at all but for the time being, it does seem + to. + + getpriority + + The priorities returned by getpriority() are + [PRIO_MIN,PRIO_MAX]. The $which argument can be any of + PRIO_PROCESS (a process) PRIO_USER (a user), or PRIO_PGRP + (a process group). The $pr_who argument tells which + process/user/process group, 0 signifying the current one. + + setrlimit + + A normal user process can only lower its resource limits. + Soft or hard limit RLIM_INFINITY means as much as + possible, the real limits are normally buried inside the + kernel. + + setpriority + + The priorities handled by setpriority() are + [PRIO_MIN,PRIO_MAX]. A normal user process can only lower + its priority (make it more positive). + |