From 87cb60beaba6a074ca55067ba988af5d2fdbd0fc Mon Sep 17 00:00:00 2001
From: manowarrior <manowarrior>
Date: Sun, 10 Sep 2006 18:00:31 +0000
Subject: [PATCH] Cpu now works on FreeBSD. Thanks to sndev for the help and to
 Stanislav Sedov for the patch (don't ask why am I commiting this..)

SVN revision: 25695
---
 e_mod_main.c | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/e_mod_main.c b/e_mod_main.c
index c798d97..d9adfa2 100644
--- a/e_mod_main.c
+++ b/e_mod_main.c
@@ -1,6 +1,12 @@
 #include <e.h>
 #include "e_mod_main.h"
 
+#ifdef __FreeBSD__
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#include <sys/resource.h>
+#endif
+
 typedef struct _Instance Instance;
 typedef struct _Cpu Cpu;
 
@@ -196,25 +202,56 @@ _get_cpu_count(void)
    char tmp[4];
    int cpu = -1;
 
+#ifdef __FreeBSD__
+   cpu = 1;
+#else
    if (!(f = fopen("/proc/stat", "r"))) return cpu;
 
    while (fscanf(f, "cp%s %*u %*u %*u %*u %*u %*u %*u %*u\n", (char *) &tmp) == 1)
      cpu++;
 
    fclose(f);
+#endif
+
    return cpu;
 }
 
 static int
 _get_cpu_load(void) 
 {
+#ifdef __FreeBSD__
+   long cp_time[CPUSTATES];
+   static long old_used, old_tot;
+   long new_used, new_tot;
+   size_t len;
+#else
    FILE *stat;
    static unsigned long old_u[4], old_n[4], old_s[4], old_i[4], old_wa[4], old_hi[4], old_si[4];
    unsigned long new_u, new_n, new_s, new_i, new_wa = 0, new_hi = 0, new_si = 0, dummy2, ticks_past;
    int tmp_u = 0, tmp_n = 0, tmp_s = 0;
    char dummy[16];
    int i = 0;
+#endif
+
+#ifdef __FreeBSD__
+   len = sizeof(cp_time);
+
+   if (sysctlbyname("kern.cp_time", &cp_time, &len, NULL, 0) < 0)
+     {
+	warn("sysctl()");
+	return 0;
+     }
+
+   new_used = cp_time[CP_USER] + cp_time[CP_NICE] + cp_time[CP_SYS];
+   new_tot = new_used + cp_time[CP_IDLE];
+
+   cpu_stats[0] = 100 * (float)(new_used - old_used) / (float)(new_tot - old_tot);
+
+   old_tot = new_tot;
+   old_used = new_used; 
    
+   cpu_stats[0]=(cpu_stats[0]>100?100:cpu_stats[0]);
+#else
    if (!(stat = fopen("/proc/stat", "r"))) return -1;
 
    /* since if there are more than 1 CPUs, the first entry is the summary:
@@ -264,6 +301,7 @@ _get_cpu_load(void)
 	i++;
      }
    fclose (stat);
+#endif
    return 0;
 }