1264   GenTimeOfLastGCClosure tolgc_cl(now);
1265   // iterate over generations getting the oldest
1266   // time that a generation was collected
1267   generation_iterate(&tolgc_cl, false);
1268 
1269   // javaTimeNanos() is guaranteed to be monotonically non-decreasing
1270   // provided the underlying platform provides such a time source
1271   // (and it is bug free). So we still have to guard against getting
1272   // back a time later than 'now'.
1273   jlong retVal = now - tolgc_cl.time();
1274   if (retVal < 0) {
1275     NOT_PRODUCT(warning("time warp: " JLONG_FORMAT, retVal);)
1276     return 0;
1277   }
1278   return retVal;
1279 }
1280 
1281 void GenCollectedHeap::stop() {
1282 #if INCLUDE_ALL_GCS
1283   if (UseConcMarkSweepGC) {
1284     ConcurrentMarkSweepThread::stop();
1285   }
1286 #endif
1287 }

1264   GenTimeOfLastGCClosure tolgc_cl(now);
1265   // iterate over generations getting the oldest
1266   // time that a generation was collected
1267   generation_iterate(&tolgc_cl, false);
1268 
1269   // javaTimeNanos() is guaranteed to be monotonically non-decreasing
1270   // provided the underlying platform provides such a time source
1271   // (and it is bug free). So we still have to guard against getting
1272   // back a time later than 'now'.
1273   jlong retVal = now - tolgc_cl.time();
1274   if (retVal < 0) {
1275     NOT_PRODUCT(warning("time warp: " JLONG_FORMAT, retVal);)
1276     return 0;
1277   }
1278   return retVal;
1279 }
1280 
1281 void GenCollectedHeap::stop() {
1282 #if INCLUDE_ALL_GCS
1283   if (UseConcMarkSweepGC) {
1284     ConcurrentMarkSweepThread::stop_all();
1285   }
1286 #endif
1287 }