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add cpu stat
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winlin
parent
4c5aae7804
commit
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7 changed files with 510 additions and 14 deletions
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@ -30,9 +30,222 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#include <srs_core.hpp>
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#include <sys/resource.h>
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// get current system time in ms, use cache to avoid performance problem
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extern int64_t srs_get_system_time_ms();
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// the deamon st-thread will update it.
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extern void srs_update_system_time_ms();
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// @see: man getrusage
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struct SrsRusage
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{
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bool ok;
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rusage r;
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SrsRusage();
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};
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// get system rusage, use cache to avoid performance problem.
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extern SrsRusage* srs_get_system_rusage();
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// the deamon st-thread will update it.
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extern void srs_update_system_rusage();
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// @see: man 5 proc, /proc/[pid]/stat
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struct SrsCpuSelfStat
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{
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// whether the data is ok.
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bool ok;
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// pid %d The process ID.
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int pid;
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// comm %s The filename of the executable, in parentheses. This is visible whether or not the executable is
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// swapped out.
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char comm[32];
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// state %c One character from the string "RSDZTW" where R is running, S is sleeping in an interruptible wait, D
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// is waiting in uninterruptible disk sleep, Z is zombie, T is traced or stopped (on a signal), and W is
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// paging.
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char state;
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// ppid %d The PID of the parent.
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int ppid;
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// pgrp %d The process group ID of the process.
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int pgrp;
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// session %d The session ID of the process.
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int session;
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// tty_nr %d The controlling terminal of the process. (The minor device number is contained in the combination of
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// bits 31 to 20 and 7 to 0; the major device number is in bits 15 t0 8.)
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int tty_nr;
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// tpgid %d The ID of the foreground process group of the controlling terminal of the process.
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int tpgid;
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// flags %u (%lu before Linux 2.6.22)
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// The kernel flags word of the process. For bit meanings, see the PF_* defines in <linux/sched.h>.
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// Details depend on the kernel version.
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unsigned int flags;
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// minflt %lu The number of minor faults the process has made which have not required loading a memory page from
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// disk.
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unsigned long minflt;
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// cminflt %lu The number of minor faults that the process’s waited-for children have made.
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unsigned long cminflt;
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// majflt %lu The number of major faults the process has made which have required loading a memory page from disk.
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unsigned long majflt;
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// cmajflt %lu The number of major faults that the process’s waited-for children have made.
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unsigned long cmajflt;
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// utime %lu Amount of time that this process has been scheduled in user mode, measured in clock ticks (divide by
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// sysconf(_SC_CLK_TCK). This includes guest time, guest_time (time spent running a virtual CPU, see
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// below), so that applications that are not aware of the guest time field do not lose that time from
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// their calculations.
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unsigned long utime;
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// stime %lu Amount of time that this process has been scheduled in kernel mode, measured in clock ticks (divide by
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// sysconf(_SC_CLK_TCK).
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unsigned long stime;
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// cutime %ld Amount of time that this process’s waited-for children have been scheduled in user mode, measured in
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// clock ticks (divide by sysconf(_SC_CLK_TCK). (See also times(2).) This includes guest time,
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// cguest_time (time spent running a virtual CPU, see below).
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long cutime;
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// cstime %ld Amount of time that this process’s waited-for children have been scheduled in kernel mode, measured in
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// clock ticks (divide by sysconf(_SC_CLK_TCK).
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long cstime;
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// priority %ld
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// (Explanation for Linux 2.6) For processes running a real-time scheduling policy (policy below; see
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// sched_setscheduler(2)), this is the negated scheduling priority, minus one; that is, a number in the
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// range -2 to -100, corresponding to real-time priorities 1 to 99. For processes running under a non-
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// real-time scheduling policy, this is the raw nice value (setpriority(2)) as represented in the kernel.
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// The kernel stores nice values as numbers in the range 0 (high) to 39 (low), corresponding to the user-
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// visible nice range of -20 to 19.
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//
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// Before Linux 2.6, this was a scaled value based on the scheduler weighting given to this process.
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long priority;
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// nice %ld The nice value (see setpriority(2)), a value in the range 19 (low priority) to -20 (high priority).
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long nice;
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// num_threads %ld
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// Number of threads in this process (since Linux 2.6). Before kernel 2.6, this field was hard coded to
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// 0 as a placeholder for an earlier removed field.
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long num_threads;
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// itrealvalue %ld
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// The time in jiffies before the next SIGALRM is sent to the process due to an interval timer. Since
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// kernel 2.6.17, this field is no longer maintained, and is hard coded as 0.
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long itrealvalue;
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// starttime %llu (was %lu before Linux 2.6)
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// The time in jiffies the process started after system boot.
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long long starttime;
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// vsize %lu Virtual memory size in bytes.
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unsigned long vsize;
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// rss %ld Resident Set Size: number of pages the process has in real memory. This is just the pages which count
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// towards text, data, or stack space. This does not include pages which have not been demand-loaded in,
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// or which are swapped out.
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long rss;
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// rsslim %lu Current soft limit in bytes on the rss of the process; see the description of RLIMIT_RSS in getprior-
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// ity(2).
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unsigned long rsslim;
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// startcode %lu
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// The address above which program text can run.
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unsigned long startcode;
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// endcode %lu The address below which program text can run.
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unsigned long endcode;
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// startstack %lu
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// The address of the start (i.e., bottom) of the stack.
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unsigned long startstack;
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// kstkesp %lu The current value of ESP (stack pointer), as found in the kernel stack page for the process.
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unsigned long kstkesp;
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// kstkeip %lu The current EIP (instruction pointer).
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unsigned long kstkeip;
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// signal %lu The bitmap of pending signals, displayed as a decimal number. Obsolete, because it does not provide
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// information on real-time signals; use /proc/[pid]/status instead.
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unsigned long signal;
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// blocked %lu The bitmap of blocked signals, displayed as a decimal number. Obsolete, because it does not provide
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// information on real-time signals; use /proc/[pid]/status instead.
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unsigned long blocked;
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// sigignore %lu
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// The bitmap of ignored signals, displayed as a decimal number. Obsolete, because it does not provide
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// information on real-time signals; use /proc/[pid]/status instead.
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unsigned long sigignore;
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// sigcatch %lu
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// The bitmap of caught signals, displayed as a decimal number. Obsolete, because it does not provide
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// information on real-time signals; use /proc/[pid]/status instead.
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unsigned long sigcatch;
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// wchan %lu This is the "channel" in which the process is waiting. It is the address of a system call, and can be
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// looked up in a namelist if you need a textual name. (If you have an up-to-date /etc/psdatabase, then
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// try ps -l to see the WCHAN field in action.)
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unsigned long wchan;
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// nswap %lu Number of pages swapped (not maintained).
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unsigned long nswap;
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// cnswap %lu Cumulative nswap for child processes (not maintained).
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unsigned long cnswap;
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// exit_signal %d (since Linux 2.1.22)
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// Signal to be sent to parent when we die.
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int exit_signal;
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// processor %d (since Linux 2.2.8)
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// CPU number last executed on.
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int processor;
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// rt_priority %u (since Linux 2.5.19; was %lu before Linux 2.6.22)
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// Real-time scheduling priority, a number in the range 1 to 99 for processes scheduled under a real-time
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// policy, or 0, for non-real-time processes (see sched_setscheduler(2)).
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unsigned int rt_priority;
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// policy %u (since Linux 2.5.19; was %lu before Linux 2.6.22)
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// Scheduling policy (see sched_setscheduler(2)). Decode using the SCHED_* constants in linux/sched.h.
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unsigned int policy;
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// delayacct_blkio_ticks %llu (since Linux 2.6.18)
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// Aggregated block I/O delays, measured in clock ticks (centiseconds).
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unsigned long long delayacct_blkio_ticks;
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// guest_time %lu (since Linux 2.6.24)
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// Guest time of the process (time spent running a virtual CPU for a guest operating system), measured in
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// clock ticks (divide by sysconf(_SC_CLK_TCK).
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unsigned long guest_time;
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// cguest_time %ld (since Linux 2.6.24)
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// Guest time of the process’s children, measured in clock ticks (divide by sysconf(_SC_CLK_TCK).
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long cguest_time;
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SrsCpuSelfStat();
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};
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// @see: man 5 proc, /proc/stat
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struct SrsCpuSystemStat
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{
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// whether the data is ok.
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bool ok;
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// always be cpu
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char label[32];
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//The amount of time, measured in units of USER_HZ (1/100ths of a second on most architectures, use
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// sysconf(_SC_CLK_TCK) to obtain the right value)
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//
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// the system spent in user mode,
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unsigned long user;
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// user mode with low priority (nice),
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unsigned long nice;
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// system mode,
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unsigned long sys;
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// and the idle task, respectively.
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unsigned long idle;
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// In Linux 2.6 this line includes three additional columns:
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//
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// iowait - time waiting for I/O to complete (since 2.5.41);
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unsigned long iowait;
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// irq - time servicing interrupts (since 2.6.0-test4);
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unsigned long irq;
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// softirq - time servicing softirqs (since 2.6.0-test4).
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unsigned long softirq;
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// Since Linux 2.6.11, there is an eighth column,
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// steal - stolen time, which is the time spent in other oper-
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// ating systems when running in a virtualized environment
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unsigned long steal;
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// Since Linux 2.6.24, there is a ninth column,
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// guest, which is the time spent running a virtual CPU for guest
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// operating systems under the control of the Linux kernel.
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unsigned long guest;
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SrsCpuSystemStat();
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};
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// get system cpu stat, use cache to avoid performance problem.
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extern SrsCpuSelfStat* srs_get_self_cpu_stat();
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// get system cpu stat, use cache to avoid performance problem.
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extern SrsCpuSystemStat* srs_get_system_cpu_stat();
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// the deamon st-thread will update it.
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extern void srs_update_system_cpu_stat();
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#endif
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