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move some utilities from kernel to app. 0.9.99
This commit is contained in:
winlin
parent
4b8d3fe05f
commit
2f89c8b2e8
8 changed files with 701 additions and 696 deletions
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@ -58,393 +58,3 @@ void srs_update_system_time_ms()
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_srs_system_time_us_cache = now_us;
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}
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static SrsRusage _srs_system_rusage;
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SrsRusage::SrsRusage()
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{
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ok = false;
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sample_time = 0;
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memset(&r, 0, sizeof(rusage));
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}
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SrsRusage* srs_get_system_rusage()
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{
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return &_srs_system_rusage;
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}
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void srs_update_system_rusage()
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{
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if (getrusage(RUSAGE_SELF, &_srs_system_rusage.r) < 0) {
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srs_warn("getrusage failed, ignore");
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return;
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}
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srs_update_system_time_ms();
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_srs_system_rusage.sample_time = srs_get_system_time_ms();
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_srs_system_rusage.ok = true;
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}
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static SrsProcSelfStat _srs_system_cpu_self_stat;
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static SrsProcSystemStat _srs_system_cpu_system_stat;
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SrsProcSelfStat::SrsProcSelfStat()
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{
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ok = false;
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sample_time = 0;
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percent = 0;
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pid = 0;
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memset(comm, 0, sizeof(comm));
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state = 0;
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ppid = 0;
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pgrp = 0;
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session = 0;
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tty_nr = 0;
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tpgid = 0;
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flags = 0;
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minflt = 0;
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cminflt = 0;
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majflt = 0;
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cmajflt = 0;
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utime = 0;
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stime = 0;
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cutime = 0;
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cstime = 0;
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priority = 0;
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nice = 0;
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num_threads = 0;
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itrealvalue = 0;
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starttime = 0;
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vsize = 0;
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rss = 0;
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rsslim = 0;
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startcode = 0;
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endcode = 0;
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startstack = 0;
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kstkesp = 0;
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kstkeip = 0;
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signal = 0;
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blocked = 0;
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sigignore = 0;
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sigcatch = 0;
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wchan = 0;
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nswap = 0;
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cnswap = 0;
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exit_signal = 0;
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processor = 0;
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rt_priority = 0;
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policy = 0;
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delayacct_blkio_ticks = 0;
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guest_time = 0;
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cguest_time = 0;
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}
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SrsProcSystemStat::SrsProcSystemStat()
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{
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ok = false;
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sample_time = 0;
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percent = 0;
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memset(label, 0, sizeof(label));
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user = 0;
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nice = 0;
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sys = 0;
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idle = 0;
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iowait = 0;
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irq = 0;
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softirq = 0;
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steal = 0;
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guest = 0;
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}
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SrsProcSelfStat* srs_get_self_proc_stat()
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{
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return &_srs_system_cpu_self_stat;
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}
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SrsProcSystemStat* srs_get_system_proc_stat()
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{
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return &_srs_system_cpu_system_stat;
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}
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bool get_proc_system_stat(SrsProcSystemStat& r)
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{
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FILE* f = fopen("/proc/stat", "r");
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if (f == NULL) {
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srs_warn("open system cpu stat failed, ignore");
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return false;
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}
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for (;;) {
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int ret = fscanf(f, "%4s %lu %lu %lu %lu %lu "
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"%lu %lu %lu %lu\n",
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r.label, &r.user, &r.nice, &r.sys, &r.idle, &r.iowait,
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&r.irq, &r.softirq, &r.steal, &r.guest);
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r.ok = false;
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if (ret == EOF) {
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break;
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}
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if (strcmp("cpu", r.label) == 0) {
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r.ok = true;
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break;
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}
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}
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fclose(f);
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return r.ok;
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}
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bool get_proc_self_stat(SrsProcSelfStat& r)
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{
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FILE* f = fopen("/proc/self/stat", "r");
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if (f == NULL) {
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srs_warn("open self cpu stat failed, ignore");
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return false;
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}
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int ret = fscanf(f, "%d %32s %c %d %d %d %d "
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"%d %u %lu %lu %lu %lu "
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"%lu %lu %ld %ld %ld %ld "
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"%ld %ld %llu %lu %ld "
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"%lu %lu %lu %lu %lu "
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"%lu %lu %lu %lu %lu "
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"%lu %lu %lu %d %d "
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"%u %u %llu "
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"%lu %ld",
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&r.pid, r.comm, &r.state, &r.ppid, &r.pgrp, &r.session, &r.tty_nr,
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&r.tpgid, &r.flags, &r.minflt, &r.cminflt, &r.majflt, &r.cmajflt,
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&r.utime, &r.stime, &r.cutime, &r.cstime, &r.priority, &r.nice,
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&r.num_threads, &r.itrealvalue, &r.starttime, &r.vsize, &r.rss,
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&r.rsslim, &r.startcode, &r.endcode, &r.startstack, &r.kstkesp,
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&r.kstkeip, &r.signal, &r.blocked, &r.sigignore, &r.sigcatch,
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&r.wchan, &r.nswap, &r.cnswap, &r.exit_signal, &r.processor,
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&r.rt_priority, &r.policy, &r.delayacct_blkio_ticks,
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&r.guest_time, &r.cguest_time);
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fclose(f);
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if (ret >= 0) {
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r.ok = true;
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}
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return r.ok;
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}
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void srs_update_proc_stat()
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{
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srs_update_system_time_ms();
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// system cpu stat
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if (true) {
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SrsProcSystemStat r;
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if (!get_proc_system_stat(r)) {
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return;
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}
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r.sample_time = srs_get_system_time_ms();
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// calc usage in percent
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SrsProcSystemStat& o = _srs_system_cpu_system_stat;
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// @see: http://blog.csdn.net/nineday/article/details/1928847
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int64_t total = (r.user + r.nice + r.sys + r.idle + r.iowait + r.irq + r.softirq + r.steal + r.guest)
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- (o.user + o.nice + o.sys + o.idle + o.iowait + o.irq + o.softirq + o.steal + o.guest);
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int64_t idle = r.idle - o.idle;
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if (total > 0) {
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r.percent = (float)(1 - idle / (double)total);
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}
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// upate cache.
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_srs_system_cpu_system_stat = r;
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}
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// self cpu stat
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if (true) {
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SrsProcSelfStat r;
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if (!get_proc_self_stat(r)) {
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return;
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}
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srs_update_system_time_ms();
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r.sample_time = srs_get_system_time_ms();
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// calc usage in percent
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SrsProcSelfStat& o = _srs_system_cpu_self_stat;
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// @see: http://stackoverflow.com/questions/16011677/calculating-cpu-usage-using-proc-files
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int64_t total = r.sample_time - o.sample_time;
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int64_t usage = (r.utime + r.stime) - (o.utime + o.stime);
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if (total > 0) {
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r.percent = (float)(usage * 1000 / (double)total / 100);
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}
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// upate cache.
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_srs_system_cpu_self_stat = r;
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}
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}
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SrsMemInfo::SrsMemInfo()
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{
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ok = false;
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sample_time = 0;
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percent_ram = 0;
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percent_swap = 0;
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MemActive = 0;
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RealInUse = 0;
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NotInUse = 0;
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MemTotal = 0;
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MemFree = 0;
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Buffers = 0;
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Cached = 0;
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SwapTotal = 0;
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SwapFree = 0;
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}
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static SrsMemInfo _srs_system_meminfo;
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SrsMemInfo* srs_get_meminfo()
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{
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return &_srs_system_meminfo;
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}
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void srs_update_meminfo()
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{
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FILE* f = fopen("/proc/meminfo", "r");
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if (f == NULL) {
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srs_warn("open meminfo failed, ignore");
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return;
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}
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SrsMemInfo& r = _srs_system_meminfo;
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r.ok = false;
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for (;;) {
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static char label[64];
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static unsigned long value;
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static char postfix[64];
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int ret = fscanf(f, "%64s %lu %64s\n", label, &value, postfix);
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if (ret == EOF) {
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break;
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}
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if (strcmp("MemTotal:", label) == 0) {
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r.MemTotal = value;
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} else if (strcmp("MemFree:", label) == 0) {
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r.MemFree = value;
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} else if (strcmp("Buffers:", label) == 0) {
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r.Buffers = value;
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} else if (strcmp("Cached:", label) == 0) {
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r.Cached = value;
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} else if (strcmp("SwapTotal:", label) == 0) {
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r.SwapTotal = value;
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} else if (strcmp("SwapFree:", label) == 0) {
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r.SwapFree = value;
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}
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}
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fclose(f);
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r.sample_time = srs_get_system_time_ms();
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r.MemActive = r.MemTotal - r.MemFree;
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r.RealInUse = r.MemActive - r.Buffers - r.Cached;
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r.NotInUse = r.MemTotal - r.RealInUse;
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r.ok = true;
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if (r.MemTotal > 0) {
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r.percent_ram = (float)(r.RealInUse / (double)r.MemTotal);
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}
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if (r.SwapTotal > 0) {
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r.percent_swap = (float)((r.SwapTotal - r.SwapFree) / (double)r.SwapTotal);
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}
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}
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SrsCpuInfo::SrsCpuInfo()
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{
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ok = false;
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nb_processors = 0;
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nb_processors_online = 0;
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}
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SrsCpuInfo* srs_get_cpuinfo()
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{
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static SrsCpuInfo* cpu = NULL;
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if (cpu != NULL) {
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return cpu;
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}
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// initialize cpu info.
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cpu = new SrsCpuInfo();
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cpu->ok = true;
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cpu->nb_processors = sysconf(_SC_NPROCESSORS_CONF);
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cpu->nb_processors_online = sysconf(_SC_NPROCESSORS_ONLN);
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return cpu;
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}
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SrsPlatformInfo::SrsPlatformInfo()
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{
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ok = false;
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srs_startup_time = srs_get_system_time_ms();
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os_uptime = 0;
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os_ilde_time = 0;
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load_one_minutes = 0;
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load_five_minutes = 0;
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load_fifteen_minutes = 0;
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}
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static SrsPlatformInfo _srs_system_platform_info;
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SrsPlatformInfo* srs_get_platform_info()
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{
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return &_srs_system_platform_info;
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}
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void srs_update_platform_info()
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{
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SrsPlatformInfo& r = _srs_system_platform_info;
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r.ok = true;
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if (true) {
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FILE* f = fopen("/proc/uptime", "r");
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if (f == NULL) {
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srs_warn("open uptime failed, ignore");
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return;
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}
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int ret = fscanf(f, "%lf %lf\n", &r.os_uptime, &r.os_ilde_time);
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fclose(f);
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if (ret < 0) {
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r.ok = false;
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}
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}
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if (true) {
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FILE* f = fopen("/proc/loadavg", "r");
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if (f == NULL) {
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srs_warn("open loadavg failed, ignore");
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return;
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}
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int ret = fscanf(f, "%lf %lf %lf\n",
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&r.load_one_minutes, &r.load_five_minutes, &r.load_fifteen_minutes);
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fclose(f);
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if (ret < 0) {
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r.ok = false;
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}
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}
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}
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