From 9ac283852f89280413516eaba6fce7ef61679619 Mon Sep 17 00:00:00 2001
From: Oleg King <king2@kaluga.ru>
Date: Mon, 5 May 2008 11:40:03 +0200
Subject: [PATCH] cpu plugin: Add support for the statgrab library.

---
 configure.in    |  1 +
 src/Makefile.am |  4 ++++
 src/cpu.c       | 32 ++++++++++++++++++++++++++++----
 3 files changed, 33 insertions(+), 4 deletions(-)

diff --git a/configure.in b/configure.in
index e834ffd6..7e11fc8a 100644
--- a/configure.in
+++ b/configure.in
@@ -2331,6 +2331,7 @@ fi
 # libstatgrab
 if test "x$with_libstatgrab" = "xyes"
 then
+	plugin_cpu="yes"
 	plugin_interface="yes"
 	plugin_load="yes"
 	plugin_memory="yes"
diff --git a/src/Makefile.am b/src/Makefile.am
index fe4af774..0ba4ab8b 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -152,6 +152,10 @@ endif
 if BUILD_WITH_LIBDEVINFO
 cpu_la_LDFLAGS += -ldevinfo
 endif
+if BUILD_WITH_LIBSTATGRAB
+cpu_la_CFLAGS = $(BUILD_WITH_LIBSTATGRAB_CFLAGS)
+cpu_la_LIBADD = $(BUILD_WITH_LIBSTATGRAB_LDFLAGS)
+endif
 collectd_LDADD += "-dlopen" cpu.la
 collectd_DEPENDENCIES += cpu.la
 endif
diff --git a/src/cpu.c b/src/cpu.c
index c79c4b66..2165ce64 100644
--- a/src/cpu.c
+++ b/src/cpu.c
@@ -68,7 +68,12 @@
 # endif
 #endif /* HAVE_SYSCTLBYNAME */
 
-#if !PROCESSOR_CPU_LOAD_INFO && !KERNEL_LINUX && !HAVE_LIBKSTAT && !HAVE_SYSCTLBYNAME
+#if HAVE_STATGRAB_H
+# include <statgrab.h>
+#endif
+
+#if !PROCESSOR_CPU_LOAD_INFO && !KERNEL_LINUX && !HAVE_LIBKSTAT \
+	&& !HAVE_SYSCTLBYNAME && !HAVE_LIBSTATGRAB
 # error "No applicable input method."
 #endif
 
@@ -98,7 +103,11 @@ static int numcpu;
 
 #elif defined(HAVE_SYSCTLBYNAME)
 static int numcpu;
-#endif /* HAVE_SYSCTLBYNAME */
+/* #endif HAVE_SYSCTLBYNAME */
+
+#elif defined(HAVE_LIBSTATGRAB)
+/* no variables needed */
+#endif /* HAVE_LIBSTATGRAB */
 
 static int init (void)
 {
@@ -152,7 +161,11 @@ static int init (void)
 
 	if (numcpu != 1)
 		NOTICE ("cpu: Only one processor supported when using `sysctlbyname' (found %i)", numcpu);
-#endif
+/* #endif HAVE_SYSCTLBYNAME */
+
+#elif defined(HAVE_LIBSTATGRAB)
+	/* nothing to initialize */
+#endif /* HAVE_LIBSTATGRAB */
 
 	return (0);
 } /* int init */
@@ -370,7 +383,18 @@ static int cpu_read (void)
 	submit (0, "nice", cpuinfo[CP_NICE]);
 	submit (0, "system", cpuinfo[CP_SYS]);
 	submit (0, "idle", cpuinfo[CP_IDLE]);
-#endif
+/* #endif HAVE_SYSCTLBYNAME */
+
+#elif defined(HAVE_LIBSTATGRAB)
+       sg_cpu_stats *cs;
+       if ((cs = sg_get_cpu_stats ()) == NULL)
+               return (0);
+
+       submit (0, "idle", (counter_t) cs->idle);
+       submit (0, "nice", (counter_t) cs->nice);
+       submit (0, "user", (counter_t) cs->user);
+       submit (0, "system", (counter_t) (cs->kernel+cs->swap+cs->iowait));
+#endif /* HAVE_LIBSTATGRAB */
 
 	return (0);
 }
-- 
2.11.0