8c7f89ad8d
The following commit message is shared with 4 patches. ------------------------------------------------------ Under the newlib interface most of our 'get' functions represent a bit of a compromise in that the actual raw values are coerced into one (probably ok) return type. That approach creates the possibility of truncation at best, and wouldn't serve future needs should something other than numeric data be added to the 'get' results. This commit trades the current compromise for a return value guaranteed to satisfy all future needs, namely a pointer to a particular api's specific results struct. The impact on existing programs is minimal, especially when using a new supplied macro. Otherwise, native 'C' syntax could be used, but may feel somewhat unnatural. [ as an aside, this new approach allows us to delete ] [ all 'getsfunc' table entries & the supporting code ] Signed-off-by: Jim Warner <james.warner@comcast.net>
131 lines
4.1 KiB
C
131 lines
4.1 KiB
C
/*
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* libprocps - Library to read proc filesystem
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef PROC_STAT_H
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#define PROC_STAT_H
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__BEGIN_DECLS
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enum stat_item {
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PROCPS_STAT_noop, // ( never altered )
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PROCPS_STAT_extra, // ( reset to zero )
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PROCPS_STAT_TIC_ID, // s_int
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PROCPS_STAT_TIC_NUMA_NODE, // s_int
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PROCPS_STAT_TIC_USER, // ull_int
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PROCPS_STAT_TIC_NICE, // ull_int
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PROCPS_STAT_TIC_SYSTEM, // ull_int
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PROCPS_STAT_TIC_IDLE, // ull_int
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PROCPS_STAT_TIC_IOWAIT, // ull_int
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PROCPS_STAT_TIC_IRQ, // ull_int
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PROCPS_STAT_TIC_SOFTIRQ, // ull_int
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PROCPS_STAT_TIC_STOLEN, // ull_int
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PROCPS_STAT_TIC_GUEST, // ull_int
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PROCPS_STAT_TIC_GUEST_NICE, // ull_int
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PROCPS_STAT_TIC_DELTA_USER, // sl_int
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PROCPS_STAT_TIC_DELTA_NICE, // sl_int
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PROCPS_STAT_TIC_DELTA_SYSTEM, // sl_int
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PROCPS_STAT_TIC_DELTA_IDLE, // sl_int
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PROCPS_STAT_TIC_DELTA_IOWAIT, // sl_int
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PROCPS_STAT_TIC_DELTA_IRQ, // sl_int
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PROCPS_STAT_TIC_DELTA_SOFTIRQ, // sl_int
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PROCPS_STAT_TIC_DELTA_STOLEN, // sl_int
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PROCPS_STAT_TIC_DELTA_GUEST, // sl_int
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PROCPS_STAT_TIC_DELTA_GUEST_NICE, // sl_int
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PROCPS_STAT_SYS_CTX_SWITCHES, // ul_int
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PROCPS_STAT_SYS_INTERRUPTS, // ul_int
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PROCPS_STAT_SYS_PROC_BLOCKED, // ul_int
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PROCPS_STAT_SYS_PROC_CREATED, // ul_int
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PROCPS_STAT_SYS_PROC_RUNNING, // ul_int
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PROCPS_STAT_SYS_TIME_OF_BOOT, // ul_int
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PROCPS_STAT_SYS_DELTA_CTX_SWITCHES, // s_int
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PROCPS_STAT_SYS_DELTA_INTERRUPTS, // s_int
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PROCPS_STAT_SYS_DELTA_PROC_BLOCKED, // s_int
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PROCPS_STAT_SYS_DELTA_PROC_CREATED, // s_int
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PROCPS_STAT_SYS_DELTA_PROC_RUNNING // s_int
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};
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enum stat_reap_type {
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STAT_REAP_CPUS_ONLY,
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STAT_REAP_CPUS_AND_NODES
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};
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struct stat_result {
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enum stat_item item;
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union {
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signed int s_int;
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signed long sl_int;
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unsigned long ul_int;
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unsigned long long ull_int;
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} result;
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};
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struct stat_stack {
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struct stat_result *head;
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};
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struct stat_reap {
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int total;
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struct stat_stack **stacks;
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};
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struct stat_reaped {
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struct stat_stack *summary;
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struct stat_reap *cpus;
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struct stat_reap *nodes;
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};
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#define PROCPS_STAT_SUMMARY_ID -11111
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#define PROCPS_STAT_NODE_INVALID -22222
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#define PROCPS_STAT_GET( statinfo, actual_enum, type ) \
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procps_stat_get( statinfo, actual_enum ) -> result . type
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#define PROCPS_STAT_VAL( relative_enum, type, stack ) \
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stack -> head [ relative_enum ] . result . type
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struct procps_statinfo;
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int procps_stat_new (struct procps_statinfo **info);
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int procps_stat_ref (struct procps_statinfo *info);
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int procps_stat_unref (struct procps_statinfo **info);
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struct stat_result *procps_stat_get (
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struct procps_statinfo *info,
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enum stat_item item);
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struct stat_reaped *procps_stat_reap (
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struct procps_statinfo *info,
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enum stat_reap_type what,
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enum stat_item *items,
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int numitems);
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struct stat_stack *procps_stat_select (
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struct procps_statinfo *info,
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enum stat_item *items,
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int numitems);
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__END_DECLS
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#endif
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