X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Fdaemon%2Futils_random.c;h=d490986dab2d746a07780845d78874de55b65941;hb=73e49352aa8c5e5ec47918dba93b508b481fe431;hp=fee08717a7d464c809be8f23685117654d6bdab0;hpb=b286b677bb54a3192a4121c2aa0857a133fd0603;p=collectd.git

diff --git a/src/daemon/utils_random.c b/src/daemon/utils_random.c
index fee08717..d490986d 100644
--- a/src/daemon/utils_random.c
+++ b/src/daemon/utils_random.c
@@ -25,18 +25,17 @@
  **/
 
 #include "collectd.h"
-#include "utils_time.h"
+
 #include "utils_random.h"
+#include "utils_time.h"
 
 #include <pthread.h>
 
-
 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
 static _Bool have_seed = 0;
 static unsigned short seed[3];
 
-static void cdrand_seed (void)
-{
+static void cdrand_seed(void) {
   cdtime_t t;
 
   if (have_seed)
@@ -44,33 +43,42 @@ static void cdrand_seed (void)
 
   t = cdtime();
 
-  seed[0] = (unsigned short) t;
-  seed[1] = (unsigned short) (t >> 16);
-  seed[2] = (unsigned short) (t >> 32);
+  seed[0] = (unsigned short)t;
+  seed[1] = (unsigned short)(t >> 16);
+  seed[2] = (unsigned short)(t >> 32);
 
   have_seed = 1;
 }
 
-double cdrand_d (void)
-{
+double cdrand_d() {
   double r;
 
-  pthread_mutex_lock (&lock);
-  cdrand_seed ();
-  r = erand48 (seed);
-  pthread_mutex_unlock (&lock);
+  pthread_mutex_lock(&lock);
+  cdrand_seed();
+  r = erand48(seed);
+  pthread_mutex_unlock(&lock);
 
   return (r);
 }
 
-long cdrand_range (long min, long max)
-{
+uint32_t cdrand_u() {
+  long r;
+
+  pthread_mutex_lock(&lock);
+  cdrand_seed();
+  r = jrand48(seed);
+  pthread_mutex_unlock(&lock);
+
+  return (uint32_t)r;
+}
+
+long cdrand_range(long min, long max) {
   long range;
   long r;
 
   range = 1 + max - min;
 
-  r = (long) (0.5 + (cdrand_d () * range));
+  r = (long)(0.5 + (cdrand_d() * range));
   r += min;
 
   return (r);