diff options
Diffstat (limited to 'library/include/diskstats.h')
| -rw-r--r-- | library/include/diskstats.h | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/library/include/diskstats.h b/library/include/diskstats.h new file mode 100644 index 0000000..d5a4b1f --- /dev/null +++ b/library/include/diskstats.h @@ -0,0 +1,135 @@ +/* + * diskstats.h - disk I/O related declarations for libproc2 + * + * Copyright © 2015-2023 Jim Warner <james.warner@comcast.net> + * Copyright © 2015-2023 Craig Small <csmall@dropbear.xyz> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef PROCPS_DISKSTATS_H +#define PROCPS_DISKSTATS_H + +#ifdef __cplusplus +extern "C" { +#endif + +enum diskstats_item { + DISKSTATS_noop, // ( never altered ) + DISKSTATS_extra, // ( reset to zero ) + // returns origin, see proc(5) + // ------- ------------------- + DISKSTATS_NAME, // str /proc/diskstats + DISKSTATS_TYPE, // s_int " + DISKSTATS_MAJOR, // s_int " + DISKSTATS_MINOR, // s_int " + + DISKSTATS_READS, // ul_int " + DISKSTATS_READS_MERGED, // ul_int " + DISKSTATS_READ_SECTORS, // ul_int " + DISKSTATS_READ_TIME, // ul_int " + DISKSTATS_WRITES, // ul_int " + DISKSTATS_WRITES_MERGED, // ul_int " + DISKSTATS_WRITE_SECTORS, // ul_int " + DISKSTATS_WRITE_TIME, // ul_int " + DISKSTATS_IO_TIME, // ul_int " + DISKSTATS_WEIGHTED_TIME, // ul_int " + + DISKSTATS_IO_INPROGRESS, // s_int " + + DISKSTATS_DELTA_READS, // s_int derived from above + DISKSTATS_DELTA_READS_MERGED, // s_int " + DISKSTATS_DELTA_READ_SECTORS, // s_int " + DISKSTATS_DELTA_READ_TIME, // s_int " + DISKSTATS_DELTA_WRITES, // s_int " + DISKSTATS_DELTA_WRITES_MERGED, // s_int " + DISKSTATS_DELTA_WRITE_SECTORS, // s_int " + DISKSTATS_DELTA_WRITE_TIME, // s_int " + DISKSTATS_DELTA_IO_TIME, // s_int " + DISKSTATS_DELTA_WEIGHTED_TIME // s_int " +}; + +enum diskstats_sort_order { + DISKSTATS_SORT_ASCEND = +1, + DISKSTATS_SORT_DESCEND = -1 +}; + + +struct diskstats_result { + enum diskstats_item item; + union { + signed int s_int; + unsigned long ul_int; + char *str; + } result; +}; + +struct diskstats_stack { + struct diskstats_result *head; +}; + +struct diskstats_reaped { + int total; + struct diskstats_stack **stacks; +}; + +struct diskstats_info; + + +#define DISKSTATS_TYPE_DISK -11111 +#define DISKSTATS_TYPE_PARTITION -22222 + +#define DISKSTATS_GET( info, name, actual_enum, type ) ( { \ + struct diskstats_result *r = procps_diskstats_get( info, name, actual_enum ); \ + r ? r->result . type : 0; } ) + +#define DISKSTATS_VAL( relative_enum, type, stack, info ) \ + stack -> head [ relative_enum ] . result . type + + +int procps_diskstats_new (struct diskstats_info **info); +int procps_diskstats_ref (struct diskstats_info *info); +int procps_diskstats_unref (struct diskstats_info **info); + +struct diskstats_result *procps_diskstats_get ( + struct diskstats_info *info, + const char *name, + enum diskstats_item item); + +struct diskstats_reaped *procps_diskstats_reap ( + struct diskstats_info *info, + enum diskstats_item *items, + int numitems); + +struct diskstats_stack *procps_diskstats_select ( + struct diskstats_info *info, + const char *name, + enum diskstats_item *items, + int numitems); + +struct diskstats_stack **procps_diskstats_sort ( + struct diskstats_info *info, + struct diskstats_stack *stacks[], + int numstacked, + enum diskstats_item sortitem, + enum diskstats_sort_order order); + + +#ifdef XTRA_PROCPS_DEBUG +# include "xtra-procps-debug.h" +#endif +#ifdef __cplusplus +} +#endif +#endif |