add proc_stat.threads

bindings/SigarWrapper.pm

@@ -620,6 +620,11 @@ our %classes = (
          desc => 'Total number of processes in zombie state',
          plat => '*'
       },
+      {
+         name => 'threads', type => 'Long',
+         desc => 'Total number of threads',
+         plat => '*'
+      },
     ],
     ProcExe => [
       {

bindings/java/src/org/hyperic/sigar/cmd/Top.java

@@ -50,7 +50,7 @@ public class Top {
             stat.getSleeping() + " sleeping, " +
             stat.getRunning()  + " running, " + 
             stat.getZombie()   + " zombie, " +
-            stat.getStopped()  + " stopped";
+            stat.getStopped()  + " stopped... " + stat.getThreads() + " threads";
     }
 
     public static void main(String[] args) throws Exception {

include/sigar.h

@@ -244,6 +244,7 @@ typedef struct {
     sigar_uint64_t zombie;
     sigar_uint64_t stopped;
     sigar_uint64_t idle;
+    sigar_uint64_t threads;
 } sigar_proc_stat_t;
 
 SIGAR_DECLARE(int) sigar_proc_stat_get(sigar_t *sigar,

src/sigar.c

@@ -155,6 +155,7 @@ SIGAR_DECLARE(int) sigar_proc_stat_get(sigar_t *sigar,
     sigar_proc_list_t proclist;
 
     SIGAR_ZERO(procstat);
+    procstat->threads = SIGAR_FIELD_NOTIMPL;
 
     if ((status = sigar_proc_list_get(sigar, &proclist)) != SIGAR_OK) {
         return status;
@@ -170,6 +171,10 @@ SIGAR_DECLARE(int) sigar_proc_stat_get(sigar_t *sigar,
             continue;
         }
 
+        if (state.threads != SIGAR_FIELD_NOTIMPL) {
+            procstat->threads += state.threads;
+        }
+
         switch (state.state) {
           case SIGAR_PROC_STATE_IDLE:
             procstat->idle++;