xnu-517.7.7.tar.gz

[apple/xnu.git] / bsd / dev / random / YarrowCoreLib / src / prng.c

diff --git a/bsd/dev/random/YarrowCoreLib/src/prng.c b/bsd/dev/random/YarrowCoreLib/src/prng.c
index fa4ab5fec7df0b2bd0b52524e06c5de34bb0bcdd..5fe3bfd941908be3ad43a8b54d424e00a55853c9 100644 (file)
--- a/bsd/dev/random/YarrowCoreLib/src/prng.c
+++ b/bsd/dev/random/YarrowCoreLib/src/prng.c
@@ -340,8 +340,8 @@ prngForceReseed(PRNG *p, LONGLONG ticks)
 #if    defined(macintosh) || defined(__APPLE__)
        #if             (defined(TARGET_API_MAC_OSX) || defined(KERNEL_BUILD))
                struct timeval  tv;             
-               int32_t                 endTime;
-       #else   TARGET_API_MAC_CARBON
+               int64_t                 endTime, curTime;
+       #else   /* TARGET_API_MAC_CARBON */
                UnsignedWide    uwide;          /* struct needed for Microseconds() */
                LONGLONG                start;
                LONGLONG                now;
@@ -357,15 +357,11 @@ prngForceReseed(PRNG *p, LONGLONG ticks)
                #if             (defined(TARGET_API_MAC_OSX) || defined(KERNEL_BUILD))
                        /* note we can't loop for more than a million microseconds */
             #ifdef KERNEL_BUILD
-                microtime (&tv);
+                microuptime (&tv);
             #else
                 gettimeofday(&tv, NULL);
             #endif
-                       endTime = tv.tv_usec + ticks;
-                       if(endTime > 1000000) {
-                               /* handle rollover now */ 
-                               endTime -= 1000000;
-                       }
+                       endTime = (int64_t)tv.tv_sec*1000000LL + (int64_t)tv.tv_usec + ticks;
                #else   /* TARGET_API_MAC_OSX */
                        Microseconds(&uwide);
                        start = UnsignedWideToUInt64(uwide);
@@ -390,9 +386,10 @@ prngForceReseed(PRNG *p, LONGLONG ticks)
         #ifdef TARGET_API_MAC_OSX
             gettimeofday(&tv, NULL);
         #else
-            microtime (&tv);
+            microuptime (&tv);
+           curTime = (int64_t)tv.tv_sec*1000000LL + (int64_t)tv.tv_usec;
         #endif
-       } while(tv.tv_usec < endTime);
+       } while(curTime < endTime);
        #else
                Microseconds(&uwide);
                now = UnsignedWideToUInt64(uwide);