add uptime, startup time, load to api

@@ -1263,12 +1263,12 @@ void SrsConfig::print_help(char** argv)
         argv[0], argv[0], argv[0], argv[0]);
 }
 
-string SrsConfig::get_cwd()
+string SrsConfig::cwd()
 {
     return _cwd;
 }
 
-string SrsConfig::get_argv()
+string SrsConfig::argv()
 {
     return _argv;
 }

@@ -149,8 +149,8 @@ private:
     virtual int parse_argv(int& i, char** argv);
     virtual void print_help(char** argv);
 public:
-    virtual std::string         get_cwd();
-    virtual std::string         get_argv();
+    virtual std::string         cwd();
+    virtual std::string         argv();
 // global section
 public:
     virtual SrsConfDirective*   get_root();

@@ -205,12 +205,16 @@ int SrsApiSummaries::do_process_request(SrsSocket* skt, SrsHttpMessage* req)
     SrsProcSystemStat* s = srs_get_system_proc_stat();
     SrsCpuInfo* c = srs_get_cpuinfo();
     SrsMemInfo* m = srs_get_meminfo();
+    SrsPlatformInfo* p = srs_get_platform_info();
     
     float self_mem_percent = 0;
     if (m->MemTotal > 0) {
         self_mem_percent = (float)(r->r.ru_maxrss / (double)m->MemTotal);
     }
     
+    int64_t now = srs_get_system_time_ms();
+    double srs_uptime = (now - p->srs_startup_time) / 100 / 10.0;
+    
     ss << JOBJECT_START
         << JFIELD_ERROR(ERROR_SUCCESS) << JFIELD_CONT
         << JFIELD_ORG("data", JOBJECT_START)
@@ -219,14 +223,17 @@ int SrsApiSummaries::do_process_request(SrsSocket* skt, SrsHttpMessage* req)
             << JFIELD_ORG("system_cpu_stat_ok", (s->ok? "true":"false")) << JFIELD_CONT
             << JFIELD_ORG("cpuinfo_ok", (c->ok? "true":"false")) << JFIELD_CONT
             << JFIELD_ORG("meminfo_ok", (m->ok? "true":"false")) << JFIELD_CONT
+            << JFIELD_ORG("platform_ok", (p->ok? "true":"false")) << JFIELD_CONT
+            << JFIELD_ORG("now", now) << JFIELD_CONT
             << JFIELD_ORG("self", JOBJECT_START)
                 << JFIELD_ORG("pid", getpid()) << JFIELD_CONT
                 << JFIELD_ORG("ppid", u->ppid) << JFIELD_CONT
-                << JFIELD_STR("argv", _srs_config->get_argv()) << JFIELD_CONT
-                << JFIELD_STR("cwd", _srs_config->get_cwd()) << JFIELD_CONT
+                << JFIELD_STR("argv", _srs_config->argv()) << JFIELD_CONT
+                << JFIELD_STR("cwd", _srs_config->cwd()) << JFIELD_CONT
                 << JFIELD_ORG("mem_kbyte", r->r.ru_maxrss) << JFIELD_CONT
                 << JFIELD_ORG("mem_percent", self_mem_percent) << JFIELD_CONT
-                << JFIELD_ORG("cpu_percent", u->percent)
+                << JFIELD_ORG("cpu_percent", u->percent) << JFIELD_CONT
+                << JFIELD_ORG("srs_uptime", srs_uptime)
             << JOBJECT_END << JFIELD_CONT
             << JFIELD_ORG("system", JOBJECT_START)
                 << JFIELD_ORG("cpu_percent", s->percent) << JFIELD_CONT
@@ -234,8 +241,13 @@ int SrsApiSummaries::do_process_request(SrsSocket* skt, SrsHttpMessage* req)
                 << JFIELD_ORG("mem_ram_percent", m->percent_ram) << JFIELD_CONT
                 << JFIELD_ORG("mem_swap_kbyte", m->SwapTotal) << JFIELD_CONT
                 << JFIELD_ORG("mem_swap_percent", m->percent_swap) << JFIELD_CONT
-                << JFIELD_ORG("nb_processors", c->nb_processors) << JFIELD_CONT
-                << JFIELD_ORG("nb_processors_online", c->nb_processors_online)
+                << JFIELD_ORG("cpus", c->nb_processors) << JFIELD_CONT
+                << JFIELD_ORG("cpus_online", c->nb_processors_online) << JFIELD_CONT
+                << JFIELD_ORG("uptime", p->os_uptime) << JFIELD_CONT
+                << JFIELD_ORG("ilde_time", p->os_ilde_time) << JFIELD_CONT
+                << JFIELD_ORG("load_1m", p->load_one_minutes) << JFIELD_CONT
+                << JFIELD_ORG("load_5m", p->load_five_minutes) << JFIELD_CONT
+                << JFIELD_ORG("load_15m", p->load_fifteen_minutes)
             << JOBJECT_END
         << JOBJECT_END
         << JOBJECT_END;

@@ -479,7 +479,7 @@ void SrsHttpHooks::on_dvr_hss_reap_flv_header(std::string url, SrsRequest* req,
         << JFIELD_STR("app", req->app) << JFIELD_CONT
         << JFIELD_STR("stream", req->stream) << JFIELD_CONT
         << JFIELD_NAME("segment") << JOBJECT_START
-            << JFIELD_STR("cwd", _srs_config->get_cwd()) << JFIELD_CONT
+            << JFIELD_STR("cwd", _srs_config->cwd()) << JFIELD_CONT
             << JFIELD_STR("path", header_file)
         << JOBJECT_END
         << JOBJECT_END;
@@ -532,7 +532,7 @@ void SrsHttpHooks::on_dvr_hss_reap_flv(string url, SrsRequest* req, SrsFlvSegmen
         << JFIELD_STR("app", req->app) << JFIELD_CONT
         << JFIELD_STR("stream", req->stream) << JFIELD_CONT
         << JFIELD_NAME("segment") << JOBJECT_START
-            << JFIELD_STR("cwd", _srs_config->get_cwd()) << JFIELD_CONT
+            << JFIELD_STR("cwd", _srs_config->cwd()) << JFIELD_CONT
             << JFIELD_STR("path", segment->path) << JFIELD_CONT
             << JFIELD_ORG("duration", segment->duration) << JFIELD_CONT
             << JFIELD_ORG("offset", segment->sequence_header_offset) << JFIELD_CONT

@@ -71,6 +71,10 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 //      SRS_SYS_CYCLE_INTERVAL * SRS_SYS_MEMINFO_RESOLUTION_TIMES
 #define SRS_SYS_MEMINFO_RESOLUTION_TIMES 60
 
+// update platform info interval:
+//      SRS_SYS_CYCLE_INTERVAL * SRS_SYS_PLATFORM_INFO_RESOLUTION_TIMES
+#define SRS_SYS_PLATFORM_INFO_RESOLUTION_TIMES 80
+
 SrsListener::SrsListener(SrsServer* server, SrsListenerType type)
 {
     fd = -1;
@@ -623,6 +627,7 @@ int SrsServer::do_cycle()
     max = srs_max(max, SRS_SYS_RUSAGE_RESOLUTION_TIMES);
     max = srs_max(max, SRS_SYS_CPU_STAT_RESOLUTION_TIMES);
     max = srs_max(max, SRS_SYS_MEMINFO_RESOLUTION_TIMES);
+    max = srs_max(max, SRS_SYS_PLATFORM_INFO_RESOLUTION_TIMES);
     
     // the deamon thread, update the time cache
     while (true) {
@@ -665,6 +670,9 @@ int SrsServer::do_cycle()
             if ((i % SRS_SYS_MEMINFO_RESOLUTION_TIMES) == 0) {
                 srs_update_meminfo();
             }
+            if ((i % SRS_SYS_PLATFORM_INFO_RESOLUTION_TIMES) == 0) {
+                srs_update_platform_info();
+            }
         }
     }
 

@@ -224,13 +224,13 @@ bool get_proc_self_stat(SrsProcSelfStat& r)
         &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;
     }
     
-    fclose(f);
-    
     return r.ok;
 }
 
@@ -349,6 +349,8 @@ void srs_update_meminfo()
         }
     }
     
+    fclose(f);
+    
     r.sample_time = srs_get_system_time_ms();
     r.MemActive = r.MemTotal - r.MemFree;
     r.RealInUse = r.MemActive - r.Buffers - r.Cached;
@@ -361,8 +363,6 @@ void srs_update_meminfo()
     if (r.SwapTotal > 0) {
         r.percent_swap = (float)((r.SwapTotal - r.SwapFree) / (double)r.SwapTotal);
     }
-    
-    fclose(f);
 }
 
 SrsCpuInfo::SrsCpuInfo()
@@ -388,3 +388,63 @@ SrsCpuInfo* srs_get_cpuinfo()
     
     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;
+        }
+    }
+}

@@ -313,4 +313,30 @@ struct 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