From: Thomas Veerman <thomas@minix3.org>
Date: Mon, 2 Apr 2012 15:25:37 +0000 (+0000)
Subject: VFS: add getting active threads control msg
X-Git-Tag: v3.2.1~594
X-Git-Url: http://zhaoyanbai.com/repos/%22http:/www.isc.org/icons/addsub.png?a=commitdiff_plain;h=933120b0b14cf755e3ea8e1695fc4726b57ba70d;p=minix.git

VFS: add getting active threads control msg
---

diff --git a/servers/vfs/misc.c b/servers/vfs/misc.c
index c394c893e..3617ee042 100644
--- a/servers/vfs/misc.c
+++ b/servers/vfs/misc.c
@@ -594,7 +594,7 @@ int ruid;
  *===========================================================================*/
 int do_svrctl()
 {
-  int svrctl;
+  unsigned int svrctl;
   vir_bytes ptr;
 
   svrctl = job_m_in.svrctl_req;
@@ -651,13 +651,19 @@ int do_svrctl()
 				r = ESRCH;
 			}
 		} else { /* VFSGETPARAM */
+			char small_buf[60];
+
+			r = ESRCH;
 			if (!strcmp(search_key, "print_traces")) {
 				mthread_stacktraces();
 				sysgetenv.val = 0;
 				sysgetenv.vallen = 0;
 				r = OK;
-			} else {
-				r = ESRCH;
+			} else if (!strcmp(search_key, "active_threads")) {
+				int active = NR_WTHREADS - worker_available();
+				sprintf(small_buf, "%d", active);
+				sysgetenv.vallen = strlen(small_buf);
+				r = OK;
 			}
 
 			if (r == OK) {
@@ -665,6 +671,13 @@ int do_svrctl()
 				    (vir_bytes) &sysgetenv, who_e, ptr,
 				    sizeof(sysgetenv))) != OK)
 					return(s);
+				if (sysgetenv.val != 0) {
+					if ((s = sys_datacopy(SELF,
+					    (vir_bytes) small_buf, who_e,
+					    (vir_bytes) sysgetenv.val,
+					    sysgetenv.vallen)) != OK)
+						return(s);
+				}
 			}
 		}