move some utilities from kernel to app. 0.9.99

@@ -128,7 +128,7 @@ int SrsForwarder::on_publish(SrsRequest* req, std::string forward_server)
             source_ep.c_str(), dest_ep.c_str(), ret);
             source_ep.c_str(), dest_ep.c_str(), ret);
         return ret;
         return ret;
     }
     }
-    srs_trace("start forward %s to %s, stream: %s/%s", 
+    srs_trace("start forward %s to %s, tcUrl=%s, stream=%s", 
         source_ep.c_str(), dest_ep.c_str(), tc_url.c_str(), 
         source_ep.c_str(), dest_ep.c_str(), tc_url.c_str(), 
         stream_name.c_str());
         stream_name.c_str());
     
     

@@ -36,6 +36,7 @@ using namespace std;
 #include <srs_app_json.hpp>
 #include <srs_app_json.hpp>
 #include <srs_app_config.hpp>
 #include <srs_app_config.hpp>
 #include <srs_kernel_utility.hpp>
 #include <srs_kernel_utility.hpp>
+#include <srs_app_utility.hpp>
 
 
 SrsApiRoot::SrsApiRoot()
 SrsApiRoot::SrsApiRoot()
 {
 {

@@ -45,6 +45,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include <srs_app_ingest.hpp>
 #include <srs_app_ingest.hpp>
 #endif
 #endif
 #include <srs_app_source.hpp>
 #include <srs_app_source.hpp>
+#include <srs_app_utility.hpp>
 
 
 #define SERVER_LISTEN_BACKLOG 512
 #define SERVER_LISTEN_BACKLOG 512
 
 

@@ -23,8 +23,11 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 
 #include <srs_app_utility.hpp>
 #include <srs_app_utility.hpp>
 
 
+#include <unistd.h>
+
 #include <srs_kernel_log.hpp>
 #include <srs_kernel_log.hpp>
 #include <srs_app_config.hpp>
 #include <srs_app_config.hpp>
+#include <srs_kernel_utility.hpp>
 
 
 int srs_get_log_level(std::string level)
 int srs_get_log_level(std::string level)
 {
 {
@@ -42,3 +45,393 @@ int srs_get_log_level(std::string level)
         return SrsLogLevel::Trace;
         return SrsLogLevel::Trace;
     }
     }
 }
 }
+
+static SrsRusage _srs_system_rusage;
+
+SrsRusage::SrsRusage()
+{
+    ok = false;
+    sample_time = 0;
+    memset(&r, 0, sizeof(rusage));
+}
+
+SrsRusage* srs_get_system_rusage()
+{
+    return &_srs_system_rusage;
+}
+
+void srs_update_system_rusage()
+{
+    if (getrusage(RUSAGE_SELF, &_srs_system_rusage.r) < 0) {
+        srs_warn("getrusage failed, ignore");
+        return;
+    }
+        
+    srs_update_system_time_ms();
+    _srs_system_rusage.sample_time = srs_get_system_time_ms();
+    
+    _srs_system_rusage.ok = true;
+}
+
+static SrsProcSelfStat _srs_system_cpu_self_stat;
+static SrsProcSystemStat _srs_system_cpu_system_stat;
+
+SrsProcSelfStat::SrsProcSelfStat()
+{
+    ok = false;
+    sample_time = 0;
+    percent = 0;
+    
+    pid = 0;
+    memset(comm, 0, sizeof(comm));
+    state = 0;
+    ppid = 0;
+    pgrp = 0;
+    session = 0;
+    tty_nr = 0;
+    tpgid = 0;
+    flags = 0;
+    minflt = 0;
+    cminflt = 0;
+    majflt = 0;
+    cmajflt = 0;
+    utime = 0;
+    stime = 0;
+    cutime = 0;
+    cstime = 0;
+    priority = 0;
+    nice = 0;
+    num_threads = 0;
+    itrealvalue = 0;
+    starttime = 0;
+    vsize = 0;
+    rss = 0;
+    rsslim = 0;
+    startcode = 0;
+    endcode = 0;
+    startstack = 0;
+    kstkesp = 0;
+    kstkeip = 0;
+    signal = 0;
+    blocked = 0;
+    sigignore = 0;
+    sigcatch = 0;
+    wchan = 0;
+    nswap = 0;
+    cnswap = 0;
+    exit_signal = 0;
+    processor = 0;
+    rt_priority = 0;
+    policy = 0;
+    delayacct_blkio_ticks = 0;
+    guest_time = 0;
+    cguest_time = 0;
+}
+
+SrsProcSystemStat::SrsProcSystemStat()
+{
+    ok = false;
+    sample_time = 0;
+    percent = 0;
+    memset(label, 0, sizeof(label));
+    user = 0;
+    nice = 0;
+    sys = 0;
+    idle = 0;
+    iowait = 0;
+    irq = 0;
+    softirq = 0;
+    steal = 0;
+    guest = 0;
+}
+
+SrsProcSelfStat* srs_get_self_proc_stat()
+{
+    return &_srs_system_cpu_self_stat;
+}
+
+SrsProcSystemStat* srs_get_system_proc_stat()
+{
+    return &_srs_system_cpu_system_stat;
+}
+
+bool get_proc_system_stat(SrsProcSystemStat& r)
+{
+    FILE* f = fopen("/proc/stat", "r");
+    if (f == NULL) {
+        srs_warn("open system cpu stat failed, ignore");
+        return false;
+    }
+    
+    for (;;) {
+        int ret = fscanf(f, "%4s %lu %lu %lu %lu %lu "
+            "%lu %lu %lu %lu\n", 
+            r.label, &r.user, &r.nice, &r.sys, &r.idle, &r.iowait,
+            &r.irq, &r.softirq, &r.steal, &r.guest);
+        r.ok = false;
+        
+        if (ret == EOF) {
+            break;
+        }
+        
+        if (strcmp("cpu", r.label) == 0) {
+            r.ok = true;
+            break;
+        }
+    }
+    
+    fclose(f);
+    
+    return r.ok;
+}
+
+bool get_proc_self_stat(SrsProcSelfStat& r)
+{
+    FILE* f = fopen("/proc/self/stat", "r");
+    if (f == NULL) {
+        srs_warn("open self cpu stat failed, ignore");
+        return false;
+    }
+    
+    int ret = fscanf(f, "%d %32s %c %d %d %d %d "
+        "%d %u %lu %lu %lu %lu "
+        "%lu %lu %ld %ld %ld %ld "
+        "%ld %ld %llu %lu %ld "
+        "%lu %lu %lu %lu %lu "
+        "%lu %lu %lu %lu %lu "
+        "%lu %lu %lu %d %d "
+        "%u %u %llu "
+        "%lu %ld", 
+        &r.pid, r.comm, &r.state, &r.ppid, &r.pgrp, &r.session, &r.tty_nr,
+        &r.tpgid, &r.flags, &r.minflt, &r.cminflt, &r.majflt, &r.cmajflt,
+        &r.utime, &r.stime, &r.cutime, &r.cstime, &r.priority, &r.nice,
+        &r.num_threads, &r.itrealvalue, &r.starttime, &r.vsize, &r.rss,
+        &r.rsslim, &r.startcode, &r.endcode, &r.startstack, &r.kstkesp,
+        &r.kstkeip, &r.signal, &r.blocked, &r.sigignore, &r.sigcatch,
+        &r.wchan, &r.nswap, &r.cnswap, &r.exit_signal, &r.processor,
+        &r.rt_priority, &r.policy, &r.delayacct_blkio_ticks, 
+        &r.guest_time, &r.cguest_time);
+    
+    fclose(f);
+        
+    if (ret >= 0) {
+        r.ok = true;
+    }
+    
+    return r.ok;
+}
+
+void srs_update_proc_stat()
+{
+    srs_update_system_time_ms();
+    
+    // system cpu stat
+    if (true) {
+        SrsProcSystemStat r;
+        if (!get_proc_system_stat(r)) {
+            return;
+        }
+        
+        r.sample_time = srs_get_system_time_ms();
+        
+        // calc usage in percent
+        SrsProcSystemStat& o = _srs_system_cpu_system_stat;
+        
+        // @see: http://blog.csdn.net/nineday/article/details/1928847
+        int64_t total = (r.user + r.nice + r.sys + r.idle + r.iowait + r.irq + r.softirq + r.steal + r.guest) 
+            - (o.user + o.nice + o.sys + o.idle + o.iowait + o.irq + o.softirq + o.steal + o.guest);
+        int64_t idle = r.idle - o.idle;
+        if (total > 0) {
+            r.percent = (float)(1 - idle / (double)total);
+        }
+        
+        // upate cache.
+        _srs_system_cpu_system_stat = r;
+    }
+    
+    // self cpu stat
+    if (true) {
+        SrsProcSelfStat r;
+        if (!get_proc_self_stat(r)) {
+            return;
+        }
+        
+        srs_update_system_time_ms();
+        r.sample_time = srs_get_system_time_ms();
+        
+        // calc usage in percent
+        SrsProcSelfStat& o = _srs_system_cpu_self_stat;
+        
+        // @see: http://stackoverflow.com/questions/16011677/calculating-cpu-usage-using-proc-files
+        int64_t total = r.sample_time - o.sample_time;
+        int64_t usage = (r.utime + r.stime) - (o.utime + o.stime);
+        if (total > 0) {
+            r.percent = (float)(usage * 1000 / (double)total / 100);
+        }
+        
+        // upate cache.
+        _srs_system_cpu_self_stat = r;
+    }
+}
+
+SrsMemInfo::SrsMemInfo()
+{
+    ok = false;
+    sample_time = 0;
+    
+    percent_ram = 0;
+    percent_swap = 0;
+    
+    MemActive = 0;
+    RealInUse = 0;
+    NotInUse = 0;
+    MemTotal = 0;
+    MemFree = 0;
+    Buffers = 0;
+    Cached = 0;
+    SwapTotal = 0;
+    SwapFree = 0;
+}
+
+static SrsMemInfo _srs_system_meminfo;
+
+SrsMemInfo* srs_get_meminfo()
+{
+    return &_srs_system_meminfo;
+}
+
+void srs_update_meminfo()
+{
+    FILE* f = fopen("/proc/meminfo", "r");
+    if (f == NULL) {
+        srs_warn("open meminfo failed, ignore");
+        return;
+    }
+    
+    SrsMemInfo& r = _srs_system_meminfo;
+    r.ok = false;
+    
+    for (;;) {
+        static char label[64];
+        static unsigned long value;
+        static char postfix[64];
+        int ret = fscanf(f, "%64s %lu %64s\n", label, &value, postfix);
+        
+        if (ret == EOF) {
+            break;
+        }
+        
+        if (strcmp("MemTotal:", label) == 0) {
+            r.MemTotal = value;
+        } else if (strcmp("MemFree:", label) == 0) {
+            r.MemFree = value;
+        } else if (strcmp("Buffers:", label) == 0) {
+            r.Buffers = value;
+        } else if (strcmp("Cached:", label) == 0) {
+            r.Cached = value;
+        } else if (strcmp("SwapTotal:", label) == 0) {
+            r.SwapTotal = value;
+        } else if (strcmp("SwapFree:", label) == 0) {
+            r.SwapFree = value;
+        }
+    }
+    
+    fclose(f);
+    
+    r.sample_time = srs_get_system_time_ms();
+    r.MemActive = r.MemTotal - r.MemFree;
+    r.RealInUse = r.MemActive - r.Buffers - r.Cached;
+    r.NotInUse = r.MemTotal - r.RealInUse;
+    
+    r.ok = true;
+    if (r.MemTotal > 0) {
+        r.percent_ram = (float)(r.RealInUse / (double)r.MemTotal);
+    }
+    if (r.SwapTotal > 0) {
+        r.percent_swap = (float)((r.SwapTotal - r.SwapFree) / (double)r.SwapTotal);
+    }
+}
+
+SrsCpuInfo::SrsCpuInfo()
+{
+    ok = false;
+    
+    nb_processors = 0;
+    nb_processors_online = 0;
+}
+
+SrsCpuInfo* srs_get_cpuinfo()
+{
+    static SrsCpuInfo* cpu = NULL;
+    if (cpu != NULL) {
+        return cpu;
+    }
+    
+    // initialize cpu info.
+    cpu = new SrsCpuInfo();
+    cpu->ok = true;
+    cpu->nb_processors = sysconf(_SC_NPROCESSORS_CONF);
+    cpu->nb_processors_online = sysconf(_SC_NPROCESSORS_ONLN);
+    
+    return cpu;
+}
+
+SrsPlatformInfo::SrsPlatformInfo()
+{
+    ok = false;
+    
+    srs_startup_time = srs_get_system_time_ms();
+    
+    os_uptime = 0;
+    os_ilde_time = 0;
+    
+    load_one_minutes = 0;
+    load_five_minutes = 0;
+    load_fifteen_minutes = 0;
+}
+
+static SrsPlatformInfo _srs_system_platform_info;
+
+SrsPlatformInfo* srs_get_platform_info()
+{
+    return &_srs_system_platform_info;
+}
+
+void srs_update_platform_info()
+{
+    SrsPlatformInfo& r = _srs_system_platform_info;
+    r.ok = true;
+    
+    if (true) {
+        FILE* f = fopen("/proc/uptime", "r");
+        if (f == NULL) {
+            srs_warn("open uptime failed, ignore");
+            return;
+        }
+        
+        int ret = fscanf(f, "%lf %lf\n", &r.os_uptime, &r.os_ilde_time);
+    
+        fclose(f);
+
+        if (ret < 0) {
+            r.ok = false;
+        }
+    }
+    
+    if (true) {
+        FILE* f = fopen("/proc/loadavg", "r");
+        if (f == NULL) {
+            srs_warn("open loadavg failed, ignore");
+            return;
+        }
+        
+        int ret = fscanf(f, "%lf %lf %lf\n", 
+            &r.load_one_minutes, &r.load_five_minutes, &r.load_fifteen_minutes);
+    
+        fclose(f);
+
+        if (ret < 0) {
+            r.ok = false;
+        }
+    }
+}

@@ -30,10 +30,314 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 
 #include <srs_core.hpp>
 #include <srs_core.hpp>
 
 
+#include <sys/resource.h>
+
 /**
 /**
 * convert level in string to log level in int.
 * convert level in string to log level in int.
 * @return the log level defined in SrsLogLevel.
 * @return the log level defined in SrsLogLevel.
 */
 */
 extern int srs_get_log_level(std::string level);
 extern int srs_get_log_level(std::string level);
 
 
+// @see: man getrusage
+struct SrsRusage
+{
+    // whether the data is ok.
+    bool ok;
+    // the time in ms when sample.
+    int64_t sample_time;
+    
+    rusage r;
+    
+    SrsRusage();
+};
+
+// get system rusage, use cache to avoid performance problem.
+extern SrsRusage* srs_get_system_rusage();
+// the deamon st-thread will update it.
+extern void srs_update_system_rusage();
+
+// @see: man 5 proc, /proc/[pid]/stat
+struct SrsProcSelfStat
+{
+    // whether the data is ok.
+    bool ok;
+    // the time in ms when sample.
+    int64_t sample_time;
+    // the percent of usage. 0.153 is 15.3%.
+    float percent;
+    
+    // pid %d      The process ID.
+    int pid;
+    // comm %s     The  filename  of  the  executable,  in parentheses. This is visible whether or not the executable is
+    //             swapped out.
+    char comm[32];
+    // state %c    One character from the string "RSDZTW" where R is running, S is sleeping in an interruptible  wait,  D
+    //             is  waiting in uninterruptible disk sleep, Z is zombie, T is traced or stopped (on a signal), and W is
+    //             paging.
+    char state;
+    // ppid %d     The PID of the parent.
+    int ppid;
+    // pgrp %d     The process group ID of the process.
+    int pgrp;
+    // session %d  The session ID of the process.
+    int session;
+    // tty_nr %d   The controlling terminal of the process.  (The minor device number is contained in the combination  of
+    //             bits 31 to 20 and 7 to 0; the major device number is in bits 15 t0 8.)
+    int tty_nr;
+    // tpgid %d    The ID of the foreground process group of the controlling terminal of the process.
+    int tpgid;
+    // flags %u (%lu before Linux 2.6.22)
+    //             The  kernel  flags  word  of  the process.  For bit meanings, see the PF_* defines in <linux/sched.h>.
+    //             Details depend on the kernel version.
+    unsigned int flags;
+    // minflt %lu  The number of minor faults the process has made which have not required loading  a  memory  page  from
+    //             disk.
+    unsigned long minflt;
+    // cminflt %lu The number of minor faults that the process’s waited-for children have made.
+    unsigned long cminflt;
+    // majflt %lu  The number of major faults the process has made which have required loading a memory page from disk.
+    unsigned long majflt;
+    // cmajflt %lu The number of major faults that the process’s waited-for children have made.
+    unsigned long cmajflt;
+    // utime %lu   Amount  of  time that this process has been scheduled in user mode, measured in clock ticks (divide by
+    //             sysconf(_SC_CLK_TCK).  This includes guest time, guest_time (time spent running  a  virtual  CPU,  see
+    //             below),  so  that  applications  that are not aware of the guest time field do not lose that time from
+    //             their calculations.
+    unsigned long utime;
+    // stime %lu   Amount of time that this process has been scheduled in kernel mode, measured in clock ticks (divide by
+    //             sysconf(_SC_CLK_TCK).
+    unsigned long stime;
+    // cutime %ld  Amount  of  time that this process’s waited-for children have been scheduled in user mode, measured in
+    //             clock ticks (divide  by  sysconf(_SC_CLK_TCK).   (See  also  times(2).)   This  includes  guest  time,
+    //             cguest_time (time spent running a virtual CPU, see below).
+    long cutime;
+    // cstime %ld  Amount of time that this process’s waited-for children have been scheduled in kernel mode, measured in
+    //             clock ticks (divide by sysconf(_SC_CLK_TCK).
+    long cstime;
+    // priority %ld
+    //          (Explanation for Linux 2.6) For processes running a real-time scheduling  policy  (policy  below;  see
+    //          sched_setscheduler(2)),  this  is the negated scheduling priority, minus one; that is, a number in the
+    //          range -2 to -100, corresponding to real-time priorities 1 to 99.  For processes running under  a  non-
+    //          real-time scheduling policy, this is the raw nice value (setpriority(2)) as represented in the kernel.
+    //          The kernel stores nice values as numbers in the range 0 (high) to 39 (low), corresponding to the user-
+    //          visible nice range of -20 to 19.
+    //
+    //          Before Linux 2.6, this was a scaled value based on the scheduler weighting given to this process.
+    long priority;
+    // nice %ld    The nice value (see setpriority(2)), a value in the range 19 (low priority) to -20 (high priority).
+    long nice;
+    // num_threads %ld
+    //          Number  of threads in this process (since Linux 2.6).  Before kernel 2.6, this field was hard coded to
+    //          0 as a placeholder for an earlier removed field.
+    long num_threads;
+    // itrealvalue %ld
+    //          The time in jiffies before the next SIGALRM is sent to the process due to an  interval  timer.   Since
+    //          kernel 2.6.17, this field is no longer maintained, and is hard coded as 0.    
+    long itrealvalue;
+    // starttime %llu (was %lu before Linux 2.6)
+    //          The time in jiffies the process started after system boot.
+    long long starttime;
+    // vsize %lu   Virtual memory size in bytes.
+    unsigned long vsize;
+    // rss %ld     Resident Set Size: number of pages the process has in real memory.  This is just the pages which count
+    //             towards text, data, or stack space.  This does not include pages which have not been demand-loaded in,
+    //             or which are swapped out.
+    long rss;
+    // rsslim %lu  Current  soft limit in bytes on the rss of the process; see the description of RLIMIT_RSS in getprior-
+    //             ity(2).
+    unsigned long rsslim;
+    // startcode %lu
+    //             The address above which program text can run.
+    unsigned long startcode;
+    // endcode %lu The address below which program text can run.
+    unsigned long endcode;
+    // startstack %lu
+    //             The address of the start (i.e., bottom) of the stack.
+    unsigned long startstack;
+    // kstkesp %lu The current value of ESP (stack pointer), as found in the kernel stack page for the process.
+    unsigned long kstkesp;
+    // kstkeip %lu The current EIP (instruction pointer).
+    unsigned long kstkeip;
+    // signal %lu  The bitmap of pending signals, displayed as a decimal number.  Obsolete, because it does  not  provide
+    //             information on real-time signals; use /proc/[pid]/status instead.
+    unsigned long signal;
+    // blocked %lu The  bitmap  of blocked signals, displayed as a decimal number.  Obsolete, because it does not provide
+    //             information on real-time signals; use /proc/[pid]/status instead.
+    unsigned long blocked;
+    // sigignore %lu
+    //             The bitmap of ignored signals, displayed as a decimal number.  Obsolete, because it does  not  provide
+    //             information on real-time signals; use /proc/[pid]/status instead.
+    unsigned long sigignore;
+    // sigcatch %lu
+    //             The  bitmap  of  caught signals, displayed as a decimal number.  Obsolete, because it does not provide
+    //             information on real-time signals; use /proc/[pid]/status instead.
+    unsigned long sigcatch;
+    // wchan %lu   This is the "channel" in which the process is waiting.  It is the address of a system call, and can be
+    //             looked  up in a namelist if you need a textual name.  (If you have an up-to-date /etc/psdatabase, then
+    //             try ps -l to see the WCHAN field in action.)
+    unsigned long wchan;
+    // nswap %lu   Number of pages swapped (not maintained).
+    unsigned long nswap;
+    // cnswap %lu  Cumulative nswap for child processes (not maintained).
+    unsigned long cnswap;
+    // exit_signal %d (since Linux 2.1.22)
+    //             Signal to be sent to parent when we die.
+    int exit_signal;
+    // processor %d (since Linux 2.2.8)
+    //             CPU number last executed on.
+    int processor;
+    // rt_priority %u (since Linux 2.5.19; was %lu before Linux 2.6.22)
+    //             Real-time scheduling priority, a number in the range 1 to 99 for processes scheduled under a real-time
+    //             policy, or 0, for non-real-time processes (see sched_setscheduler(2)).
+    unsigned int rt_priority;
+    // policy %u (since Linux 2.5.19; was %lu before Linux 2.6.22)
+    //             Scheduling policy (see sched_setscheduler(2)).  Decode using the SCHED_* constants in linux/sched.h.
+    unsigned int policy;
+    // delayacct_blkio_ticks %llu (since Linux 2.6.18)
+    //             Aggregated block I/O delays, measured in clock ticks (centiseconds).
+    unsigned long long delayacct_blkio_ticks;
+    // guest_time %lu (since Linux 2.6.24)
+    //             Guest time of the process (time spent running a virtual CPU for a guest operating system), measured in
+    //             clock ticks (divide by sysconf(_SC_CLK_TCK).
+    unsigned long guest_time;
+    // cguest_time %ld (since Linux 2.6.24)
+    //             Guest time of the process’s children, measured in clock ticks (divide by sysconf(_SC_CLK_TCK).
+    long cguest_time;
+    
+    SrsProcSelfStat();
+};
+
+// @see: man 5 proc, /proc/stat
+struct SrsProcSystemStat
+{
+    // whether the data is ok.
+    bool ok;
+    // the time in ms when sample.
+    int64_t sample_time;
+    // the percent of usage. 0.153 is 15.3%.
+    float percent;
+    
+    // always be cpu
+    char label[32];
+    
+    //The amount of time, measured in units  of  USER_HZ  (1/100ths  of  a  second  on  most  architectures,  use
+    // sysconf(_SC_CLK_TCK)  to  obtain  the  right value)
+    //
+    // the system spent in user mode, 
+    unsigned long user;
+    // user mode with low priority (nice), 
+    unsigned long nice;
+    // system mode, 
+    unsigned long sys;
+    // and the idle task, respectively.
+    unsigned long idle;
+
+    // In  Linux 2.6 this line includes three additional columns:
+    //
+    // iowait - time waiting for I/O to complete (since 2.5.41);
+    unsigned long iowait;
+    // irq - time servicing interrupts (since 2.6.0-test4); 
+    unsigned long irq;
+    // softirq  -  time  servicing  softirqs  (since 2.6.0-test4).
+    unsigned long softirq;
+    
+    // Since  Linux 2.6.11, there is an eighth column,
+    // steal - stolen time, which is the time spent in other oper-
+    // ating systems when running in a virtualized environment
+    unsigned long steal;
+    
+    // Since Linux 2.6.24, there is a ninth column, 
+    // guest, which is the time spent running a virtual CPU for guest
+    // operating systems under the control of the Linux kernel.
+    unsigned long guest;
+
+    SrsProcSystemStat();
+};
+
+// get system cpu stat, use cache to avoid performance problem.
+extern SrsProcSelfStat* srs_get_self_proc_stat();
+// get system cpu stat, use cache to avoid performance problem.
+extern SrsProcSystemStat* srs_get_system_proc_stat();
+// the deamon st-thread will update it.
+extern void srs_update_proc_stat();
+
+// @see: cat /proc/meminfo 
+struct SrsMemInfo
+{
+    // whether the data is ok.
+    bool ok;
+    // the time in ms when sample.
+    int64_t sample_time;
+    // the percent of usage. 0.153 is 15.3%.
+    float percent_ram;
+    float percent_swap;
+    
+    // MemActive = MemTotal - MemFree
+    int64_t MemActive;
+    // RealInUse = MemActive - Buffers - Cached
+    int64_t RealInUse;
+    // NotInUse = MemTotal - RealInUse
+    //          = MemTotal - MemActive + Buffers + Cached
+    //          = MemTotal - MemTotal + MemFree + Buffers + Cached
+    //          = MemFree + Buffers + Cached
+    int64_t NotInUse;
+    
+    int64_t MemTotal;
+    int64_t MemFree;
+    int64_t Buffers;
+    int64_t Cached;
+    int64_t SwapTotal;
+    int64_t SwapFree;
+    
+    SrsMemInfo();
+};
+
+// get system meminfo, use cache to avoid performance problem.
+extern SrsMemInfo* srs_get_meminfo();
+// the deamon st-thread will update it.
+extern void srs_update_meminfo();
+
+// @see: cat /proc/cpuinfo 
+struct SrsCpuInfo
+{
+    // whether the data is ok.
+    bool ok;
+    
+    // The number of processors configured.
+    int nb_processors;
+    // The number of processors currently online (available).
+    int nb_processors_online;
+    
+    SrsCpuInfo();
+};
+
+// get system cpu info, use cache to avoid performance problem.
+extern SrsCpuInfo* srs_get_cpuinfo();
+
+// platform(os, srs) summary
+struct SrsPlatformInfo
+{
+    // whether the data is ok.
+    bool ok;
+    
+    // srs startup time, in ms.
+    int64_t srs_startup_time;
+    
+    // @see: cat /proc/uptime
+    double os_uptime;
+    double os_ilde_time;
+    
+    // @see: cat /proc/loadavg
+    double load_one_minutes;
+    double load_five_minutes;
+    double load_fifteen_minutes;
+    
+    SrsPlatformInfo();
+};
+
+// get platform info, use cache to avoid performance problem.
+extern SrsPlatformInfo* srs_get_platform_info();
+// the deamon st-thread will update it.
+extern void srs_update_platform_info();
+
 #endif
 #endif

@@ -31,7 +31,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 // current release version
 // current release version
 #define VERSION_MAJOR "0"
 #define VERSION_MAJOR "0"
 #define VERSION_MINOR "9"
 #define VERSION_MINOR "9"
-#define VERSION_REVISION "98"
+#define VERSION_REVISION "99"
 #define RTMP_SIG_SRS_VERSION VERSION_MAJOR"."VERSION_MINOR"."VERSION_REVISION
 #define RTMP_SIG_SRS_VERSION VERSION_MAJOR"."VERSION_MINOR"."VERSION_REVISION
 // server info.
 // server info.
 #define RTMP_SIG_SRS_KEY "srs"
 #define RTMP_SIG_SRS_KEY "srs"

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

@@ -30,313 +30,9 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 
 #include <srs_core.hpp>
 #include <srs_core.hpp>
 
 
-#include <sys/resource.h>
-
 // get current system time in ms, use cache to avoid performance problem
 // get current system time in ms, use cache to avoid performance problem
 extern int64_t srs_get_system_time_ms();
 extern int64_t srs_get_system_time_ms();
 // the deamon st-thread will update it.
 // the deamon st-thread will update it.
 extern void srs_update_system_time_ms();
 extern void srs_update_system_time_ms();
 
 
-// @see: man getrusage
-struct SrsRusage
-{
-    // whether the data is ok.
-    bool ok;
-    // the time in ms when sample.
-    int64_t sample_time;
-    
-    rusage r;
-    
-    SrsRusage();
-};
-
-// get system rusage, use cache to avoid performance problem.
-extern SrsRusage* srs_get_system_rusage();
-// the deamon st-thread will update it.
-extern void srs_update_system_rusage();
-
-// @see: man 5 proc, /proc/[pid]/stat
-struct SrsProcSelfStat
-{
-    // whether the data is ok.
-    bool ok;
-    // the time in ms when sample.
-    int64_t sample_time;
-    // the percent of usage. 0.153 is 15.3%.
-    float percent;
-    
-    // pid %d      The process ID.
-    int pid;
-    // comm %s     The  filename  of  the  executable,  in parentheses. This is visible whether or not the executable is
-    //             swapped out.
-    char comm[32];
-    // state %c    One character from the string "RSDZTW" where R is running, S is sleeping in an interruptible  wait,  D
-    //             is  waiting in uninterruptible disk sleep, Z is zombie, T is traced or stopped (on a signal), and W is
-    //             paging.
-    char state;
-    // ppid %d     The PID of the parent.
-    int ppid;
-    // pgrp %d     The process group ID of the process.
-    int pgrp;
-    // session %d  The session ID of the process.
-    int session;
-    // tty_nr %d   The controlling terminal of the process.  (The minor device number is contained in the combination  of
-    //             bits 31 to 20 and 7 to 0; the major device number is in bits 15 t0 8.)
-    int tty_nr;
-    // tpgid %d    The ID of the foreground process group of the controlling terminal of the process.
-    int tpgid;
-    // flags %u (%lu before Linux 2.6.22)
-    //             The  kernel  flags  word  of  the process.  For bit meanings, see the PF_* defines in <linux/sched.h>.
-    //             Details depend on the kernel version.
-    unsigned int flags;
-    // minflt %lu  The number of minor faults the process has made which have not required loading  a  memory  page  from
-    //             disk.
-    unsigned long minflt;
-    // cminflt %lu The number of minor faults that the process’s waited-for children have made.
-    unsigned long cminflt;
-    // majflt %lu  The number of major faults the process has made which have required loading a memory page from disk.
-    unsigned long majflt;
-    // cmajflt %lu The number of major faults that the process’s waited-for children have made.
-    unsigned long cmajflt;
-    // utime %lu   Amount  of  time that this process has been scheduled in user mode, measured in clock ticks (divide by
-    //             sysconf(_SC_CLK_TCK).  This includes guest time, guest_time (time spent running  a  virtual  CPU,  see
-    //             below),  so  that  applications  that are not aware of the guest time field do not lose that time from
-    //             their calculations.
-    unsigned long utime;
-    // stime %lu   Amount of time that this process has been scheduled in kernel mode, measured in clock ticks (divide by
-    //             sysconf(_SC_CLK_TCK).
-    unsigned long stime;
-    // cutime %ld  Amount  of  time that this process’s waited-for children have been scheduled in user mode, measured in
-    //             clock ticks (divide  by  sysconf(_SC_CLK_TCK).   (See  also  times(2).)   This  includes  guest  time,
-    //             cguest_time (time spent running a virtual CPU, see below).
-    long cutime;
-    // cstime %ld  Amount of time that this process’s waited-for children have been scheduled in kernel mode, measured in
-    //             clock ticks (divide by sysconf(_SC_CLK_TCK).
-    long cstime;
-    // priority %ld
-    //          (Explanation for Linux 2.6) For processes running a real-time scheduling  policy  (policy  below;  see
-    //          sched_setscheduler(2)),  this  is the negated scheduling priority, minus one; that is, a number in the
-    //          range -2 to -100, corresponding to real-time priorities 1 to 99.  For processes running under  a  non-
-    //          real-time scheduling policy, this is the raw nice value (setpriority(2)) as represented in the kernel.
-    //          The kernel stores nice values as numbers in the range 0 (high) to 39 (low), corresponding to the user-
-    //          visible nice range of -20 to 19.
-    //
-    //          Before Linux 2.6, this was a scaled value based on the scheduler weighting given to this process.
-    long priority;
-    // nice %ld    The nice value (see setpriority(2)), a value in the range 19 (low priority) to -20 (high priority).
-    long nice;
-    // num_threads %ld
-    //          Number  of threads in this process (since Linux 2.6).  Before kernel 2.6, this field was hard coded to
-    //          0 as a placeholder for an earlier removed field.
-    long num_threads;
-    // itrealvalue %ld
-    //          The time in jiffies before the next SIGALRM is sent to the process due to an  interval  timer.   Since
-    //          kernel 2.6.17, this field is no longer maintained, and is hard coded as 0.    
-    long itrealvalue;
-    // starttime %llu (was %lu before Linux 2.6)
-    //          The time in jiffies the process started after system boot.
-    long long starttime;
-    // vsize %lu   Virtual memory size in bytes.
-    unsigned long vsize;
-    // rss %ld     Resident Set Size: number of pages the process has in real memory.  This is just the pages which count
-    //             towards text, data, or stack space.  This does not include pages which have not been demand-loaded in,
-    //             or which are swapped out.
-    long rss;
-    // rsslim %lu  Current  soft limit in bytes on the rss of the process; see the description of RLIMIT_RSS in getprior-
-    //             ity(2).
-    unsigned long rsslim;
-    // startcode %lu
-    //             The address above which program text can run.
-    unsigned long startcode;
-    // endcode %lu The address below which program text can run.
-    unsigned long endcode;
-    // startstack %lu
-    //             The address of the start (i.e., bottom) of the stack.
-    unsigned long startstack;
-    // kstkesp %lu The current value of ESP (stack pointer), as found in the kernel stack page for the process.
-    unsigned long kstkesp;
-    // kstkeip %lu The current EIP (instruction pointer).
-    unsigned long kstkeip;
-    // signal %lu  The bitmap of pending signals, displayed as a decimal number.  Obsolete, because it does  not  provide
-    //             information on real-time signals; use /proc/[pid]/status instead.
-    unsigned long signal;
-    // blocked %lu The  bitmap  of blocked signals, displayed as a decimal number.  Obsolete, because it does not provide
-    //             information on real-time signals; use /proc/[pid]/status instead.
-    unsigned long blocked;
-    // sigignore %lu
-    //             The bitmap of ignored signals, displayed as a decimal number.  Obsolete, because it does  not  provide
-    //             information on real-time signals; use /proc/[pid]/status instead.
-    unsigned long sigignore;
-    // sigcatch %lu
-    //             The  bitmap  of  caught signals, displayed as a decimal number.  Obsolete, because it does not provide
-    //             information on real-time signals; use /proc/[pid]/status instead.
-    unsigned long sigcatch;
-    // wchan %lu   This is the "channel" in which the process is waiting.  It is the address of a system call, and can be
-    //             looked  up in a namelist if you need a textual name.  (If you have an up-to-date /etc/psdatabase, then
-    //             try ps -l to see the WCHAN field in action.)
-    unsigned long wchan;
-    // nswap %lu   Number of pages swapped (not maintained).
-    unsigned long nswap;
-    // cnswap %lu  Cumulative nswap for child processes (not maintained).
-    unsigned long cnswap;
-    // exit_signal %d (since Linux 2.1.22)
-    //             Signal to be sent to parent when we die.
-    int exit_signal;
-    // processor %d (since Linux 2.2.8)
-    //             CPU number last executed on.
-    int processor;
-    // rt_priority %u (since Linux 2.5.19; was %lu before Linux 2.6.22)
-    //             Real-time scheduling priority, a number in the range 1 to 99 for processes scheduled under a real-time
-    //             policy, or 0, for non-real-time processes (see sched_setscheduler(2)).
-    unsigned int rt_priority;
-    // policy %u (since Linux 2.5.19; was %lu before Linux 2.6.22)
-    //             Scheduling policy (see sched_setscheduler(2)).  Decode using the SCHED_* constants in linux/sched.h.
-    unsigned int policy;
-    // delayacct_blkio_ticks %llu (since Linux 2.6.18)
-    //             Aggregated block I/O delays, measured in clock ticks (centiseconds).
-    unsigned long long delayacct_blkio_ticks;
-    // guest_time %lu (since Linux 2.6.24)
-    //             Guest time of the process (time spent running a virtual CPU for a guest operating system), measured in
-    //             clock ticks (divide by sysconf(_SC_CLK_TCK).
-    unsigned long guest_time;
-    // cguest_time %ld (since Linux 2.6.24)
-    //             Guest time of the process’s children, measured in clock ticks (divide by sysconf(_SC_CLK_TCK).
-    long cguest_time;
-    
-    SrsProcSelfStat();
-};
-
-// @see: man 5 proc, /proc/stat
-struct SrsProcSystemStat
-{
-    // whether the data is ok.
-    bool ok;
-    // the time in ms when sample.
-    int64_t sample_time;
-    // the percent of usage. 0.153 is 15.3%.
-    float percent;
-    
-    // always be cpu
-    char label[32];
-    
-    //The amount of time, measured in units  of  USER_HZ  (1/100ths  of  a  second  on  most  architectures,  use
-    // sysconf(_SC_CLK_TCK)  to  obtain  the  right value)
-    //
-    // the system spent in user mode, 
-    unsigned long user;
-    // user mode with low priority (nice), 
-    unsigned long nice;
-    // system mode, 
-    unsigned long sys;
-    // and the idle task, respectively.
-    unsigned long idle;
-
-    // In  Linux 2.6 this line includes three additional columns:
-    //
-    // iowait - time waiting for I/O to complete (since 2.5.41);
-    unsigned long iowait;
-    // irq - time servicing interrupts (since 2.6.0-test4); 
-    unsigned long irq;
-    // softirq  -  time  servicing  softirqs  (since 2.6.0-test4).
-    unsigned long softirq;
-    
-    // Since  Linux 2.6.11, there is an eighth column,
-    // steal - stolen time, which is the time spent in other oper-
-    // ating systems when running in a virtualized environment
-    unsigned long steal;
-    
-    // Since Linux 2.6.24, there is a ninth column, 
-    // guest, which is the time spent running a virtual CPU for guest
-    // operating systems under the control of the Linux kernel.
-    unsigned long guest;
-
-    SrsProcSystemStat();
-};
-
-// get system cpu stat, use cache to avoid performance problem.
-extern SrsProcSelfStat* srs_get_self_proc_stat();
-// get system cpu stat, use cache to avoid performance problem.
-extern SrsProcSystemStat* srs_get_system_proc_stat();
-// the deamon st-thread will update it.
-extern void srs_update_proc_stat();
-
-// @see: cat /proc/meminfo 
-struct SrsMemInfo
-{
-    // whether the data is ok.
-    bool ok;
-    // the time in ms when sample.
-    int64_t sample_time;
-    // the percent of usage. 0.153 is 15.3%.
-    float percent_ram;
-    float percent_swap;
-    
-    // MemActive = MemTotal - MemFree
-    int64_t MemActive;
-    // RealInUse = MemActive - Buffers - Cached
-    int64_t RealInUse;
-    // NotInUse = MemTotal - RealInUse
-    //          = MemTotal - MemActive + Buffers + Cached
-    //          = MemTotal - MemTotal + MemFree + Buffers + Cached
-    //          = MemFree + Buffers + Cached
-    int64_t NotInUse;
-    
-    int64_t MemTotal;
-    int64_t MemFree;
-    int64_t Buffers;
-    int64_t Cached;
-    int64_t SwapTotal;
-    int64_t SwapFree;
-    
-    SrsMemInfo();
-};
-
-// get system meminfo, use cache to avoid performance problem.
-extern SrsMemInfo* srs_get_meminfo();
-// the deamon st-thread will update it.
-extern void srs_update_meminfo();
-
-// @see: cat /proc/cpuinfo 
-struct SrsCpuInfo
-{
-    // whether the data is ok.
-    bool ok;
-    
-    // The number of processors configured.
-    int nb_processors;
-    // The number of processors currently online (available).
-    int nb_processors_online;
-    
-    SrsCpuInfo();
-};
-
-// get system cpu info, use cache to avoid performance problem.
-extern SrsCpuInfo* srs_get_cpuinfo();
-
-// platform(os, srs) summary
-struct SrsPlatformInfo
-{
-    // whether the data is ok.
-    bool ok;
-    
-    // srs startup time, in ms.
-    int64_t srs_startup_time;
-    
-    // @see: cat /proc/uptime
-    double os_uptime;
-    double os_ilde_time;
-    
-    // @see: cat /proc/loadavg
-    double load_one_minutes;
-    double load_five_minutes;
-    double load_fifteen_minutes;
-    
-    SrsPlatformInfo();
-};
-
-// get platform info, use cache to avoid performance problem.
-extern SrsPlatformInfo* srs_get_platform_info();
-// the deamon st-thread will update it.
-extern void srs_update_platform_info();
-
 #endif
 #endif