wmclockmon: update change-log
[dockapps.git] / wmhdplop / procstat.c
blobd51b53cdc2c66adc6c3b975786fd3d3afd7d4317
1 #include <stdio.h>
2 #include <ctype.h>
3 #include <string.h>
4 #include "global.h"
5 #include "procstat.h"
6 #include "devnames.h"
8 static ProcStats ps;
9 int use_proc_diskstats;
11 void pstat_init(struct pstat *pst, long nslice, float update_interval) {
12 pst->nslice = nslice;
13 ALLOC_VEC(pst->slices, nslice);
14 pst->cur_slice = 0;
15 pst->total = 0;
16 pst->update_interval = update_interval;
19 float pstat_current(struct pstat *pst) {
20 long idx = pst->cur_slice ? pst->cur_slice-1 : pst->nslice-1;
21 return pst->slices[idx]/pst->update_interval;
24 void pstat_add(struct pstat *pst, unsigned long v) {
25 pst->slices[pst->cur_slice] += v;
28 void pstat_advance(struct pstat *pst) {
29 unsigned long v = pst->slices[pst->cur_slice];
30 if (pst->total)
31 pst->slices[pst->cur_slice] -= pst->total;
32 else pst->slices[pst->cur_slice] = 0;
33 pst->total = v;
34 if (++pst->cur_slice >= pst->nslice) pst->cur_slice = 0;
35 pst->slices[pst->cur_slice] = 0;
38 float pstat_meanval(struct pstat *pst) {
39 unsigned long sum = 0;
40 int i;
41 for (i = 0; i < pst->nslice; ++i) sum += pst->slices[i];
42 return sum / pst->update_interval / (pst->nslice-1);
45 float get_read_throughput() {
46 return pstat_current(&ps.disk_read) / 2048.; /* 2048 because we log sector counts */
49 float get_write_throughput() {
50 return pstat_current(&ps.disk_write) / 2048.;
53 float get_swapin_throughput() {
54 return pstat_current(&ps.swap_in) / 2048.;
57 float get_swapout_throughput() {
58 return pstat_current(&ps.swap_out) / 2048.;
61 float get_read_mean_throughput() {
62 return pstat_meanval(&ps.disk_read) / 2048.;
65 float get_write_mean_throughput() {
66 return pstat_meanval(&ps.disk_write) / 2048.;
69 void update_stats() {
70 FILE *f;
71 char line[1024];
72 char hdname[200];
73 int readok = 0;
74 const char *proc_fname;
75 if (!use_proc_diskstats) proc_fname = "/proc/partitions";
76 else proc_fname = "/proc/diskstats";
78 f = fopen(proc_fname, "r");
79 if (!f) { perror(proc_fname); return; }
80 while (fgets(line, sizeof(line), f)) {
81 int major, minor;
82 unsigned long nr, nw;
83 const char *fmt = use_proc_diskstats ?
84 "%d %d %200s %*d %*d %lu %*d %*d %*d %lu" :
85 "%d %d %*u %200s %*d %*d %lu %*d %*d %*d %lu";
86 if (sscanf(line, fmt, &major, &minor, hdname, &nr, &nw) == 5 ||
87 (use_proc_diskstats && is_partition(major,minor) &&
88 /* .. kernel 2.5 uses a different format for partitions and disc */
89 sscanf(line, "%d %d %200s %*d %lu %*d %lu", &major, &minor, hdname, &nr, &nw) == 5)) {
90 DiskList *dl;
91 if (readok == 0) readok = 1;
92 if ((dl=find_dev(major,minor))) {
93 dl->touched_r = (dl->nr - nr) ? 10 : dl->touched_r;
94 dl->touched_w = (dl->nw - nw) ? 10 : dl->touched_w;
95 dl->nr = nr; dl->nw = nw;
96 if (is_displayed(dl->hd_id,dl->part_id) &&
97 ((dl->part_id && (!find_id(dl->hd_id, 0) || !is_displayed(dl->hd_id, 0))) || /* partition without host disk */
98 (dl->part_id == 0))) /* disk */
100 if (!Prefs.debug_disk_rd) {
101 pstat_add(&ps.disk_read, nr);
102 } else {
103 static long cntr = 0; cntr+=(rand()%30) == 0 ? Prefs.debug_disk_rd : 0;
104 pstat_add(&ps.disk_read, nr + cntr);
106 if (!Prefs.debug_disk_wr) {
107 pstat_add(&ps.disk_write, nw);
108 } else {
109 static long cntw = 0; cntw+=(rand()%30) == 0 ? Prefs.debug_disk_wr : 0;
110 pstat_add(&ps.disk_write, nw + cntw);
112 readok = 2;
115 /* if (in_our_disk || find_dev(major,minor))*/ {
116 strlist *sl;
117 for (sl = swap_list(); sl; sl=sl->next) {
118 if (strcmp(stripdev(hdname), stripdev(sl->s)) == 0) {
119 if (!Prefs.debug_swapio) {
120 pstat_add(&ps.swap_in, nr);
121 pstat_add(&ps.swap_out, nw);
122 } else {
123 static long cnt = 0; cnt+=Prefs.debug_swapio;
124 pstat_add(&ps.swap_in, nr + cnt);
125 pstat_add(&ps.swap_out, nw + cnt);
132 fclose(f);
133 pstat_advance(&ps.disk_read);pstat_advance(&ps.disk_write);
134 pstat_advance(&ps.swap_in);pstat_advance(&ps.swap_out);
135 if (readok == 0) { fprintf(stderr, "warning: could not find any info in %s (kernel too old?)\n", proc_fname); exit(1); }
136 else if (readok == 1) { ONLY_ONCE(fprintf(stderr, "warning: could not find any monitored disc in %s\n", proc_fname)); }
137 BLAHBLAH(1,printf("swap: %5.2f,%5.2f disc: %5.2f,%5.2f MB/s\n",
138 get_swapin_throughput(), get_swapout_throughput(),
139 get_read_throughput(), get_write_throughput()));
142 void init_stats(float update_interval) {
143 char s[512];
144 FILE *f;
146 pstat_init(&ps.swap_in, (long)(0.5/update_interval)+1, update_interval);
147 pstat_init(&ps.swap_out, (long)(0.5/update_interval)+1, update_interval);
148 pstat_init(&ps.disk_read, (long)(0.5/update_interval)+1, update_interval);
149 pstat_init(&ps.disk_write, (long)(0.5/update_interval)+1, update_interval);
150 f = fopen("/proc/swaps","r");
151 //if (!f) { perror("/proc/swaps"); exit(1); }
152 if (f) {
153 while (fgets(s, 512, f)) {
154 char *s2 = strchr(s,' ');
155 if (s2 && s2 != s && strncmp(s, "/dev/", 5) == 0) {
156 *s2 = 0;
157 add_swap(s);
158 BLAHBLAH(1,printf("found swap partition: %s\n", swap_list()->s));
161 fclose(f);
163 if (!swap_list()) {
164 fprintf(stderr, "Warning: no swap partition found in /proc/swaps !!\n");
166 if ((f=fopen("/proc/diskstats","r"))) {
167 use_proc_diskstats = 1; fclose(f);
169 else { use_proc_diskstats = 0; }
170 BLAHBLAH(1,printf("using %s for disc statistics\n", use_proc_diskstats ? "/proc/diskstats" : "/proc/partitions"));
175 /* hello I am brain-dead */
176 void scan_all_hd(int add_partitions) {
177 char s[512];
178 FILE *f = NULL;
179 /* find mounted partitions */
180 if (add_partitions && (f = fopen("/etc/mtab","r"))) {
181 while (fgets(s,512,f)) {
182 char partname[512], mountpoint[512];
183 mountpoint[0] = 0;
184 if (sscanf(s,"%500s %500s", partname, mountpoint)>=1) {
185 char *p = strchr(mountpoint, '/');
186 //printf("add_device_by_name(%s, %s)\n", partname, p);
187 add_device_by_name(partname, p);
191 if (f) fclose(f);
193 /* second try .. look for hard drives listed in proc/partitions (and only hard-drives .. their partitions
194 are supposed to be listed in mtab) */
195 if ((f = fopen("/proc/partitions","r"))) {
196 while (fgets(s,512,f)) {
197 unsigned major, minor;
198 char name[512]; name[0] = 0;
199 if (sscanf(s,"%d %d %*d %500s", &major, &minor, name)==3) {
200 int hd_id, part_id;
201 /* on n'ajoute que les disques dont au moins une partoche etait dans mtab */
202 if (device_info(major,minor,NULL,&hd_id,&part_id) != 0 && part_id == 0 && find_id(hd_id,-1)) {
203 add_device_by_id(major,minor,NULL);
209 if (f) fclose(f);
210 /* for (c = 'a'; c <= 'z'; ++c) {
211 snprintf(s,512,"/proc/ide/hd%c/media",c);
212 if ((f = fopen(s,"r")) && fgets(s, 512, f) && strcmp(s, "disk\n")==0) {
213 snprintf(s, 512, "/dev/hd%c",c);
214 add_device(s, NULL);
216 if (f) fclose(f);