X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Fcontextswitch.c;h=76e2a6c0b935c9225d50e96e7c2405554f459476;hb=5523a080010dcb7a61dc0dccc3969a2a048e52f9;hp=56d8bf09ee490f79bf148eaff6d67947ad98d1f2;hpb=1538fa84b575c8cc8fc19345c7bc597a2069f19d;p=collectd.git

diff --git a/src/contextswitch.c b/src/contextswitch.c
index 56d8bf09..76e2a6c0 100644
--- a/src/contextswitch.c
+++ b/src/contextswitch.c
@@ -1,6 +1,7 @@
 /**
  * collectd - src/contextswitch.c
  * Copyright (C) 2009  Patrik Weiskircher
+ * Copyright (C) 2010  Kimo Rosenbaum
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
@@ -17,9 +18,11 @@
  *
  * Authors:
  *   Patrik Weiskircher <weiskircher at inqnet.at>
+ *   Kimo Rosenbaum <http://github.com/kimor79>
  **/
 
 #include "collectd.h"
+
 #include "common.h"
 #include "plugin.h"
 
@@ -35,6 +38,11 @@
 /* no global variables */
 /* #endif KERNEL_LINUX */
 
+#elif HAVE_PERFSTAT
+# include <sys/protosw.h>
+# include <libperfstat.h>
+/* #endif HAVE_PERFSTAT */
+
 #else
 # error "No applicable input method."
 #endif
@@ -57,29 +65,31 @@ static void cs_submit (derive_t context_switches)
 
 static int cs_read (void)
 {
-	int status = -2;
 #if HAVE_SYSCTLBYNAME
-	int value;
+	int value = 0;
 	size_t value_len = sizeof (value);
+	int status;
 
-	if (sysctlbyname ("vm.stats.sys.v_swtch", (void *) &value, &value_len,
-			NULL, 0) == 0)
-	{
-		cs_submit(value);
-		status = 0;
-	}
-	else
+	status = sysctlbyname ("vm.stats.sys.v_swtch",
+			&value, &value_len,
+			/* new pointer = */ NULL, /* new length = */ 0);
+	if (status != 0)
 	{
-		ERROR("contextswitch plugin: sysctlbyname failed");
+		ERROR("contextswitch plugin: sysctlbyname "
+				"(vm.stats.sys.v_swtch) failed");
+		return (-1);
 	}
 
+	cs_submit (value);
 /* #endif HAVE_SYSCTLBYNAME */
+
 #elif KERNEL_LINUX
 	FILE *fh;
 	char buffer[64];
 	int numfields;
 	char *fields[3];
 	derive_t result = 0;
+	int status = -2;
 
 	fh = fopen ("/proc/stat", "r");
 	if (fh == NULL) {
@@ -117,7 +127,24 @@ static int cs_read (void)
 
 	if (status == -2)
 		ERROR ("contextswitch plugin: Unable to find context switch value.");
-#endif /* KERNEL_LINUX */
+/* #endif  KERNEL_LINUX */
+
+#elif HAVE_PERFSTAT
+	int status = 0;
+	perfstat_cpu_total_t perfcputotal;
+
+	status = perfstat_cpu_total(NULL, &perfcputotal, sizeof(perfstat_cpu_total_t), 1);
+	if (status < 0)
+	{
+		char errbuf[1024];
+		ERROR ("contextswitch plugin: perfstat_cpu_total: %s",
+			sstrerror (errno, errbuf, sizeof (errbuf)));
+		return (-1);
+	}
+
+	cs_submit(perfcputotal.pswitch);
+	status = 0;
+#endif /* defined(HAVE_PERFSTAT) */
 
 	return status;
 }