aboutsummaryrefslogtreecommitdiff
path: root/miscutils/nmeter.c
diff options
context:
space:
mode:
Diffstat (limited to 'miscutils/nmeter.c')
-rw-r--r--miscutils/nmeter.c889
1 files changed, 0 insertions, 889 deletions
diff --git a/miscutils/nmeter.c b/miscutils/nmeter.c
deleted file mode 100644
index 1d58eb2c1..000000000
--- a/miscutils/nmeter.c
+++ /dev/null
@@ -1,889 +0,0 @@
-/*
-** Licensed under the GPL v2, see the file LICENSE in this tarball
-**
-** Based on nanotop.c from floppyfw project
-**
-** Contact me: vda.linux@googlemail.com */
-
-//TODO:
-// simplify code
-// /proc/locks
-// /proc/stat:
-// disk_io: (3,0):(22272,17897,410702,4375,54750)
-// btime 1059401962
-
-#include "libbb.h"
-#include <time.h>
-
-typedef unsigned long long ullong;
-
-enum { PROC_FILE_SIZE = 4096 };
-
-typedef struct proc_file {
- char *file;
- //const char *name;
- smallint last_gen;
-} proc_file;
-
-static const char *const proc_name[] = {
- "stat", // Must match the order of proc_file's!
- "loadavg",
- "net/dev",
- "meminfo",
- "diskstats",
- "sys/fs/file-nr",
-};
-
-struct globals {
- // Sample generation flip-flop
- smallint gen;
- // Linux 2.6? (otherwise assumes 2.4)
- smallint is26;
- // 1 if sample delay is not an integer fraction of a second
- smallint need_seconds;
- char *cur_outbuf;
- const char *final_str;
- int delta;
- int deltanz;
- struct timeval tv;
-#define first_proc_file proc_stat
- proc_file proc_stat; // Must match the order of proc_name's!
- proc_file proc_loadavg;
- proc_file proc_net_dev;
- proc_file proc_meminfo;
- proc_file proc_diskstats;
- proc_file proc_sys_fs_filenr;
-};
-#define G (*ptr_to_globals)
-#define gen (G.gen )
-#define is26 (G.is26 )
-#define need_seconds (G.need_seconds )
-#define cur_outbuf (G.cur_outbuf )
-#define final_str (G.final_str )
-#define delta (G.delta )
-#define deltanz (G.deltanz )
-#define tv (G.tv )
-#define proc_stat (G.proc_stat )
-#define proc_loadavg (G.proc_loadavg )
-#define proc_net_dev (G.proc_net_dev )
-#define proc_meminfo (G.proc_meminfo )
-#define proc_diskstats (G.proc_diskstats )
-#define proc_sys_fs_filenr (G.proc_sys_fs_filenr)
-#define INIT_G() do { \
- PTR_TO_GLOBALS = xzalloc(sizeof(G)); \
- cur_outbuf = outbuf; \
- final_str = "\n"; \
- deltanz = delta = 1000000; \
- } while (0)
-
-// We depend on this being a char[], not char* - we take sizeof() of it
-#define outbuf bb_common_bufsiz1
-
-static inline void reset_outbuf(void)
-{
- cur_outbuf = outbuf;
-}
-
-static inline int outbuf_count(void)
-{
- return cur_outbuf - outbuf;
-}
-
-static void print_outbuf(void)
-{
- int sz = cur_outbuf - outbuf;
- if (sz > 0) {
- xwrite(1, outbuf, sz);
- cur_outbuf = outbuf;
- }
-}
-
-static void put(const char *s)
-{
- int sz = strlen(s);
- if (sz > outbuf + sizeof(outbuf) - cur_outbuf)
- sz = outbuf + sizeof(outbuf) - cur_outbuf;
- memcpy(cur_outbuf, s, sz);
- cur_outbuf += sz;
-}
-
-static void put_c(char c)
-{
- if (cur_outbuf < outbuf + sizeof(outbuf))
- *cur_outbuf++ = c;
-}
-
-static void put_question_marks(int count)
-{
- while (count--)
- put_c('?');
-}
-
-static void readfile_z(char *buf, int sz, const char* fname)
-{
-// open_read_close() will do two reads in order to be sure we are at EOF,
-// and we don't need/want that.
-// sz = open_read_close(fname, buf, sz-1);
-
- int fd = xopen(fname, O_RDONLY);
- buf[0] = '\0';
- if (fd >= 0) {
- sz = read(fd, buf, sz-1);
- if (sz > 0) buf[sz] = '\0';
- close(fd);
- }
-}
-
-static const char* get_file(proc_file *pf)
-{
- if (pf->last_gen != gen) {
- pf->last_gen = gen;
- // We allocate PROC_FILE_SIZE bytes. This wastes memory,
- // but allows us to allocate only once (at first sample)
- // per proc file, and reuse buffer for each sample
- if (!pf->file)
- pf->file = xmalloc(PROC_FILE_SIZE);
- readfile_z(pf->file, PROC_FILE_SIZE, proc_name[pf - &first_proc_file]);
- }
- return pf->file;
-}
-
-static inline ullong read_after_slash(const char *p)
-{
- p = strchr(p, '/');
- if (!p) return 0;
- return strtoull(p+1, NULL, 10);
-}
-
-enum conv_type { conv_decimal, conv_slash };
-
-// Reads decimal values from line. Values start after key, for example:
-// "cpu 649369 0 341297 4336769..." - key is "cpu" here.
-// Values are stored in vec[]. arg_ptr has list of positions
-// we are interested in: for example: 1,2,5 - we want 1st, 2nd and 5th value.
-static int vrdval(const char* p, const char* key,
- enum conv_type conv, ullong *vec, va_list arg_ptr)
-{
- int indexline;
- int indexnext;
-
- p = strstr(p, key);
- if (!p) return 1;
-
- p += strlen(key);
- indexline = 1;
- indexnext = va_arg(arg_ptr, int);
- while (1) {
- while (*p == ' ' || *p == '\t') p++;
- if (*p == '\n' || *p == '\0') break;
-
- if (indexline == indexnext) { // read this value
- *vec++ = conv==conv_decimal ?
- strtoull(p, NULL, 10) :
- read_after_slash(p);
- indexnext = va_arg(arg_ptr, int);
- }
- while (*p > ' ') p++; // skip over value
- indexline++;
- }
- return 0;
-}
-
-// Parses files with lines like "cpu0 21727 0 15718 1813856 9461 10485 0 0":
-// rdval(file_contents, "string_to_find", result_vector, value#, value#...)
-// value# start with 1
-static int rdval(const char* p, const char* key, ullong *vec, ...)
-{
- va_list arg_ptr;
- int result;
-
- va_start(arg_ptr, vec);
- result = vrdval(p, key, conv_decimal, vec, arg_ptr);
- va_end(arg_ptr);
-
- return result;
-}
-
-// Parses files with lines like "... ... ... 3/148 ...."
-static int rdval_loadavg(const char* p, ullong *vec, ...)
-{
- va_list arg_ptr;
- int result;
-
- va_start(arg_ptr, vec);
- result = vrdval(p, "", conv_slash, vec, arg_ptr);
- va_end(arg_ptr);
-
- return result;
-}
-
-// Parses /proc/diskstats
-// 1 2 3 4 5 6(rd) 7 8 9 10(wr) 11 12 13 14
-// 3 0 hda 51292 14441 841783 926052 25717 79650 843256 3029804 0 148459 3956933
-// 3 1 hda1 0 0 0 0 <- ignore if only 4 fields
-static int rdval_diskstats(const char* p, ullong *vec)
-{
- ullong rd = 0; // to avoid "warning: 'rd' might be used uninitialized"
- int indexline = 0;
- vec[0] = 0;
- vec[1] = 0;
- while (1) {
- indexline++;
- while (*p == ' ' || *p == '\t') p++;
- if (*p == '\0') break;
- if (*p == '\n') {
- indexline = 0;
- p++;
- continue;
- }
- if (indexline == 6) {
- rd = strtoull(p, NULL, 10);
- } else if (indexline == 10) {
- vec[0] += rd; // TODO: *sectorsize (don't know how to find out sectorsize)
- vec[1] += strtoull(p, NULL, 10);
- while (*p != '\n' && *p != '\0') p++;
- continue;
- }
- while (*p > ' ') p++; // skip over value
- }
- return 0;
-}
-
-static void scale(ullong ul)
-{
- char buf[5];
- smart_ulltoa5(ul, buf);
- put(buf);
-}
-
-
-#define S_STAT(a) \
-typedef struct a { \
- struct s_stat *next; \
- void (*collect)(struct a *s); \
- const char *label;
-#define S_STAT_END(a) } a;
-
-S_STAT(s_stat)
-S_STAT_END(s_stat)
-
-static void collect_literal(s_stat *s)
-{
-}
-
-static s_stat* init_literal(void)
-{
- s_stat *s = xmalloc(sizeof(s_stat));
- s->collect = collect_literal;
- return (s_stat*)s;
-}
-
-static s_stat* init_delay(const char *param)
-{
- delta = bb_strtoi(param, NULL, 0) * 1000;
- deltanz = delta > 0 ? delta : 1;
- need_seconds = (1000000%deltanz) != 0;
- return NULL;
-}
-
-static s_stat* init_cr(const char *param)
-{
- final_str = "\r";
- return (s_stat*)0;
-}
-
-
-// user nice system idle iowait irq softirq (last 3 only in 2.6)
-//cpu 649369 0 341297 4336769 11640 7122 1183
-//cpuN 649369 0 341297 4336769 11640 7122 1183
-enum { CPU_FIELDCNT = 7 };
-S_STAT(cpu_stat)
- ullong old[CPU_FIELDCNT];
- int bar_sz;
- char *bar;
-S_STAT_END(cpu_stat)
-
-
-static void collect_cpu(cpu_stat *s)
-{
- ullong data[CPU_FIELDCNT] = { 0, 0, 0, 0, 0, 0, 0 };
- unsigned frac[CPU_FIELDCNT] = { 0, 0, 0, 0, 0, 0, 0 };
- ullong all = 0;
- int norm_all = 0;
- int bar_sz = s->bar_sz;
- char *bar = s->bar;
- int i;
-
- if (rdval(get_file(&proc_stat), "cpu ", data, 1, 2, 3, 4, 5, 6, 7)) {
- put_question_marks(bar_sz);
- return;
- }
-
- for (i = 0; i < CPU_FIELDCNT; i++) {
- ullong old = s->old[i];
- if (data[i] < old) old = data[i]; //sanitize
- s->old[i] = data[i];
- all += (data[i] -= old);
- }
-
- if (all) {
- for (i = 0; i < CPU_FIELDCNT; i++) {
- ullong t = bar_sz * data[i];
- norm_all += data[i] = t / all;
- frac[i] = t % all;
- }
-
- while (norm_all < bar_sz) {
- unsigned max = frac[0];
- int pos = 0;
- for (i = 1; i < CPU_FIELDCNT; i++) {
- if (frac[i] > max) max = frac[i], pos = i;
- }
- frac[pos] = 0; //avoid bumping up same value twice
- data[pos]++;
- norm_all++;
- }
-
- memset(bar, '.', bar_sz);
- memset(bar, 'S', data[2]); bar += data[2]; //sys
- memset(bar, 'U', data[0]); bar += data[0]; //usr
- memset(bar, 'N', data[1]); bar += data[1]; //nice
- memset(bar, 'D', data[4]); bar += data[4]; //iowait
- memset(bar, 'I', data[5]); bar += data[5]; //irq
- memset(bar, 'i', data[6]); bar += data[6]; //softirq
- } else {
- memset(bar, '?', bar_sz);
- }
- put(s->bar);
-}
-
-
-static s_stat* init_cpu(const char *param)
-{
- int sz;
- cpu_stat *s = xmalloc(sizeof(cpu_stat));
- s->collect = collect_cpu;
- sz = strtol(param, NULL, 0);
- if (sz < 10) sz = 10;
- if (sz > 1000) sz = 1000;
- s->bar = xmalloc(sz+1);
- s->bar[sz] = '\0';
- s->bar_sz = sz;
- return (s_stat*)s;
-}
-
-
-S_STAT(int_stat)
- ullong old;
- int no;
-S_STAT_END(int_stat)
-
-static void collect_int(int_stat *s)
-{
- ullong data[1];
- ullong old;
-
- if (rdval(get_file(&proc_stat), "intr", data, s->no)) {
- put_question_marks(4);
- return;
- }
-
- old = s->old;
- if (data[0] < old) old = data[0]; //sanitize
- s->old = data[0];
- scale(data[0] - old);
-}
-
-static s_stat* init_int(const char *param)
-{
- int_stat *s = xmalloc(sizeof(int_stat));
- s->collect = collect_int;
- if (param[0]=='\0') {
- s->no = 1;
- } else {
- int n = strtoul(param, NULL, 0);
- s->no = n+2;
- }
- return (s_stat*)s;
-}
-
-
-S_STAT(ctx_stat)
- ullong old;
-S_STAT_END(ctx_stat)
-
-static void collect_ctx(ctx_stat *s)
-{
- ullong data[1];
- ullong old;
-
- if (rdval(get_file(&proc_stat), "ctxt", data, 1)) {
- put_question_marks(4);
- return;
- }
-
- old = s->old;
- if (data[0] < old) old = data[0]; //sanitize
- s->old = data[0];
- scale(data[0] - old);
-}
-
-static s_stat* init_ctx(const char *param)
-{
- ctx_stat *s = xmalloc(sizeof(ctx_stat));
- s->collect = collect_ctx;
- return (s_stat*)s;
-}
-
-
-S_STAT(blk_stat)
- const char* lookfor;
- ullong old[2];
-S_STAT_END(blk_stat)
-
-static void collect_blk(blk_stat *s)
-{
- ullong data[2];
- int i;
-
- if (is26) {
- i = rdval_diskstats(get_file(&proc_diskstats), data);
- } else {
- i = rdval(get_file(&proc_stat), s->lookfor, data, 1, 2);
- // Linux 2.4 reports bio in Kbytes, convert to sectors:
- data[0] *= 2;
- data[1] *= 2;
- }
- if (i) {
- put_question_marks(9);
- return;
- }
-
- for (i=0; i<2; i++) {
- ullong old = s->old[i];
- if (data[i] < old) old = data[i]; //sanitize
- s->old[i] = data[i];
- data[i] -= old;
- }
- scale(data[0]*512); // TODO: *sectorsize
- put_c(' ');
- scale(data[1]*512);
-}
-
-static s_stat* init_blk(const char *param)
-{
- blk_stat *s = xmalloc(sizeof(blk_stat));
- s->collect = collect_blk;
- s->lookfor = "page";
- return (s_stat*)s;
-}
-
-
-S_STAT(fork_stat)
- ullong old;
-S_STAT_END(fork_stat)
-
-static void collect_thread_nr(fork_stat *s)
-{
- ullong data[1];
-
- if (rdval_loadavg(get_file(&proc_loadavg), data, 4)) {
- put_question_marks(4);
- return;
- }
- scale(data[0]);
-}
-
-static void collect_fork(fork_stat *s)
-{
- ullong data[1];
- ullong old;
-
- if (rdval(get_file(&proc_stat), "processes", data, 1)) {
- put_question_marks(4);
- return;
- }
-
- old = s->old;
- if (data[0] < old) old = data[0]; //sanitize
- s->old = data[0];
- scale(data[0] - old);
-}
-
-static s_stat* init_fork(const char *param)
-{
- fork_stat *s = xmalloc(sizeof(fork_stat));
- if (*param == 'n') {
- s->collect = collect_thread_nr;
- } else {
- s->collect = collect_fork;
- }
- return (s_stat*)s;
-}
-
-
-S_STAT(if_stat)
- ullong old[4];
- const char *device;
- char *device_colon;
-S_STAT_END(if_stat)
-
-static void collect_if(if_stat *s)
-{
- ullong data[4];
- int i;
-
- if (rdval(get_file(&proc_net_dev), s->device_colon, data, 1, 3, 9, 11)) {
- put_question_marks(10);
- return;
- }
-
- for (i=0; i<4; i++) {
- ullong old = s->old[i];
- if (data[i] < old) old = data[i]; //sanitize
- s->old[i] = data[i];
- data[i] -= old;
- }
- put_c(data[1] ? '*' : ' ');
- scale(data[0]);
- put_c(data[3] ? '*' : ' ');
- scale(data[2]);
-}
-
-static s_stat* init_if(const char *device)
-{
- if_stat *s = xmalloc(sizeof(if_stat));
-
- if (!device || !device[0])
- bb_show_usage();
- s->collect = collect_if;
-
- s->device = device;
- s->device_colon = xmalloc(strlen(device)+2);
- strcpy(s->device_colon, device);
- strcat(s->device_colon, ":");
- return (s_stat*)s;
-}
-
-
-S_STAT(mem_stat)
- char opt;
-S_STAT_END(mem_stat)
-
-// "Memory" value should not include any caches.
-// IOW: neither "ls -laR /" nor heavy read/write activity
-// should affect it. We'd like to also include any
-// long-term allocated kernel-side mem, but it is hard
-// to figure out. For now, bufs, cached & slab are
-// counted as "free" memory
-//2.6.16:
-//MemTotal: 773280 kB
-//MemFree: 25912 kB - genuinely free
-//Buffers: 320672 kB - cache
-//Cached: 146396 kB - cache
-//SwapCached: 0 kB
-//Active: 183064 kB
-//Inactive: 356892 kB
-//HighTotal: 0 kB
-//HighFree: 0 kB
-//LowTotal: 773280 kB
-//LowFree: 25912 kB
-//SwapTotal: 131064 kB
-//SwapFree: 131064 kB
-//Dirty: 48 kB
-//Writeback: 0 kB
-//Mapped: 96620 kB
-//Slab: 200668 kB - takes 7 Mb on my box fresh after boot,
-// but includes dentries and inodes
-// (== can take arbitrary amount of mem)
-//CommitLimit: 517704 kB
-//Committed_AS: 236776 kB
-//PageTables: 1248 kB
-//VmallocTotal: 516052 kB
-//VmallocUsed: 3852 kB
-//VmallocChunk: 512096 kB
-//HugePages_Total: 0
-//HugePages_Free: 0
-//Hugepagesize: 4096 kB
-static void collect_mem(mem_stat *s)
-{
- ullong m_total = 0;
- ullong m_free = 0;
- ullong m_bufs = 0;
- ullong m_cached = 0;
- ullong m_slab = 0;
-
- if (rdval(get_file(&proc_meminfo), "MemTotal:", &m_total, 1)) {
- put_question_marks(4);
- return;
- }
- if (s->opt == 'f') {
- scale(m_total << 10);
- return;
- }
-
- if (rdval(proc_meminfo.file, "MemFree:", &m_free , 1)
- || rdval(proc_meminfo.file, "Buffers:", &m_bufs , 1)
- || rdval(proc_meminfo.file, "Cached:", &m_cached, 1)
- || rdval(proc_meminfo.file, "Slab:", &m_slab , 1)
- ) {
- put_question_marks(4);
- return;
- }
-
- m_free += m_bufs + m_cached + m_slab;
- switch (s->opt) {
- case 'f':
- scale(m_free << 10); break;
- default:
- scale((m_total - m_free) << 10); break;
- }
-}
-
-static s_stat* init_mem(const char *param)
-{
- mem_stat *s = xmalloc(sizeof(mem_stat));
- s->collect = collect_mem;
- s->opt = param[0];
- return (s_stat*)s;
-}
-
-
-S_STAT(swp_stat)
-S_STAT_END(swp_stat)
-
-static void collect_swp(swp_stat *s)
-{
- ullong s_total[1];
- ullong s_free[1];
- if (rdval(get_file(&proc_meminfo), "SwapTotal:", s_total, 1)
- || rdval(proc_meminfo.file, "SwapFree:" , s_free, 1)
- ) {
- put_question_marks(4);
- return;
- }
- scale((s_total[0]-s_free[0]) << 10);
-}
-
-static s_stat* init_swp(const char *param)
-{
- swp_stat *s = xmalloc(sizeof(swp_stat));
- s->collect = collect_swp;
- return (s_stat*)s;
-}
-
-
-S_STAT(fd_stat)
-S_STAT_END(fd_stat)
-
-static void collect_fd(fd_stat *s)
-{
- ullong data[2];
-
- if (rdval(get_file(&proc_sys_fs_filenr), "", data, 1, 2)) {
- put_question_marks(4);
- return;
- }
-
- scale(data[0] - data[1]);
-}
-
-static s_stat* init_fd(const char *param)
-{
- fd_stat *s = xmalloc(sizeof(fd_stat));
- s->collect = collect_fd;
- return (s_stat*)s;
-}
-
-
-S_STAT(time_stat)
- int prec;
- int scale;
-S_STAT_END(time_stat)
-
-static void collect_time(time_stat *s)
-{
- char buf[sizeof("12:34:56.123456")];
- struct tm* tm;
- int us = tv.tv_usec + s->scale/2;
- time_t t = tv.tv_sec;
-
- if (us >= 1000000) {
- t++;
- us -= 1000000;
- }
- tm = localtime(&t);
-
- sprintf(buf, "%02d:%02d:%02d", tm->tm_hour, tm->tm_min, tm->tm_sec);
- if (s->prec)
- sprintf(buf+8, ".%0*d", s->prec, us / s->scale);
- put(buf);
-}
-
-static s_stat* init_time(const char *param)
-{
- int prec;
- time_stat *s = xmalloc(sizeof(time_stat));
-
- s->collect = collect_time;
- prec = param[0]-'0';
- if (prec < 0) prec = 0;
- else if (prec > 6) prec = 6;
- s->prec = prec;
- s->scale = 1;
- while (prec++ < 6)
- s->scale *= 10;
- return (s_stat*)s;
-}
-
-static void collect_info(s_stat *s)
-{
- gen ^= 1;
- while (s) {
- put(s->label);
- s->collect(s);
- s = s->next;
- }
-}
-
-
-typedef s_stat* init_func(const char *param);
-
-static const char options[] = "ncmsfixptbdr";
-static init_func *const init_functions[] = {
- init_if,
- init_cpu,
- init_mem,
- init_swp,
- init_fd,
- init_int,
- init_ctx,
- init_fork,
- init_time,
- init_blk,
- init_delay,
- init_cr,
-};
-
-int nmeter_main(int argc, char **argv);
-int nmeter_main(int argc, char **argv)
-{
- char buf[32];
- s_stat *first = NULL;
- s_stat *last = NULL;
- s_stat *s;
- char *cur, *prev;
-
- INIT_G();
-
- xchdir("/proc");
-
- if (argc != 2)
- bb_show_usage();
-
- if (open_read_close("version", buf, sizeof(buf)) > 0)
- is26 = (strstr(buf, " 2.4.")==NULL);
-
- // Can use argv[1] directly, but this will mess up
- // parameters as seen by e.g. ps. Making a copy...
- cur = xstrdup(argv[1]);
- while (1) {
- char *param, *p;
- prev = cur;
- again:
- cur = strchr(cur, '%');
- if (!cur)
- break;
- if (cur[1] == '%') { // %%
- strcpy(cur, cur+1);
- cur++;
- goto again;
- }
- *cur++ = '\0'; // overwrite %
- if (cur[0] == '[') {
- // format: %[foptstring]
- cur++;
- p = strchr(options, cur[0]);
- param = cur+1;
- while (cur[0] != ']') {
- if (!cur[0])
- bb_show_usage();
- cur++;
- }
- *cur++ = '\0'; // overwrite [
- } else {
- // format: %NNNNNNf
- param = cur;
- while (cur[0] >= '0' && cur[0] <= '9')
- cur++;
- if (!cur[0])
- bb_show_usage();
- p = strchr(options, cur[0]);
- *cur++ = '\0'; // overwrite format char
- }
- if (!p)
- bb_show_usage();
- s = init_functions[p-options](param);
- if (s) {
- s->label = prev;
- s->next = 0;
- if (!first)
- first = s;
- else
- last->next = s;
- last = s;
- } else {
- // %NNNNd or %r option. remove it from string
- strcpy(prev + strlen(prev), cur);
- cur = prev;
- }
- }
- if (prev[0]) {
- s = init_literal();
- s->label = prev;
- s->next = 0;
- if (!first)
- first = s;
- else
- last->next = s;
- last = s;
- }
-
- // Generate first samples but do not print them, they're bogus
- collect_info(first);
- reset_outbuf();
- if (delta >= 0) {
- gettimeofday(&tv, NULL);
- usleep(delta > 1000000 ? 1000000 : delta - tv.tv_usec%deltanz);
- }
-
- while (1) {
- gettimeofday(&tv, NULL);
- collect_info(first);
- put(final_str);
- print_outbuf();
-
- // Negative delta -> no usleep at all
- // This will hog the CPU but you can have REALLY GOOD
- // time resolution ;)
- // TODO: detect and avoid useless updates
- // (like: nothing happens except time)
- if (delta >= 0) {
- int rem;
- // can be commented out, will sacrifice sleep time precision a bit
- gettimeofday(&tv, NULL);
- if (need_seconds)
- rem = delta - ((ullong)tv.tv_sec*1000000 + tv.tv_usec) % deltanz;
- else
- rem = delta - tv.tv_usec%deltanz;
- // Sometimes kernel wakes us up just a tiny bit earlier than asked
- // Do not go to very short sleep in this case
- if (rem < delta/128) {
- rem += delta;
- }
- usleep(rem);
- }
- }
-
- /*return 0;*/
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-20 15:09:06 +0000