Mercurial > hg > truffle

comparison src/share/vm/runtime/arguments.cpp @ 1966:4110c3e0c50d

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Merge
author iveresov
date Fri, 19 Nov 2010 17:01:34 -0800
parents 9752a6549f2e 0ac62b4d6507
children f95d63e2154a
comparison
equal deleted inserted replaced
1962:0be53e62c06c 1966:4110c3e0c50d
1339 } 1339 }
1340 return true; 1340 return true;
1341 } 1341 }
1342 1342
1343 inline uintx max_heap_for_compressed_oops() { 1343 inline uintx max_heap_for_compressed_oops() {
1344 // Heap should be above HeapBaseMinAddress to get zero based compressed oops. 1344 // Avoid sign flip.
1345 LP64_ONLY(return OopEncodingHeapMax - MaxPermSize - os::vm_page_size() - HeapBaseMinAddress); 1345 if (OopEncodingHeapMax < MaxPermSize + os::vm_page_size()) {
1346 return 0;
1347 }
1348 LP64_ONLY(return OopEncodingHeapMax - MaxPermSize - os::vm_page_size());
1346 NOT_LP64(ShouldNotReachHere(); return 0); 1349 NOT_LP64(ShouldNotReachHere(); return 0);
1347 } 1350 }
1348 1351
1349 bool Arguments::should_auto_select_low_pause_collector() { 1352 bool Arguments::should_auto_select_low_pause_collector() {
1350 if (UseAutoGCSelectPolicy && 1353 if (UseAutoGCSelectPolicy &&
1518 // Limit the heap size to ErgoHeapSizeLimit 1521 // Limit the heap size to ErgoHeapSizeLimit
1519 reasonable_max = MIN2(reasonable_max, (julong)ErgoHeapSizeLimit); 1522 reasonable_max = MIN2(reasonable_max, (julong)ErgoHeapSizeLimit);
1520 } 1523 }
1521 if (UseCompressedOops) { 1524 if (UseCompressedOops) {
1522 // Limit the heap size to the maximum possible when using compressed oops 1525 // Limit the heap size to the maximum possible when using compressed oops
1523 reasonable_max = MIN2(reasonable_max, (julong)max_heap_for_compressed_oops()); 1526 julong max_coop_heap = (julong)max_heap_for_compressed_oops();
1527 if (HeapBaseMinAddress + MaxHeapSize < max_coop_heap) {
1528 // Heap should be above HeapBaseMinAddress to get zero based compressed oops
1529 // but it should be not less than default MaxHeapSize.
1530 max_coop_heap -= HeapBaseMinAddress;
1531 }
1532 reasonable_max = MIN2(reasonable_max, max_coop_heap);
1524 } 1533 }
1525 reasonable_max = os::allocatable_physical_memory(reasonable_max); 1534 reasonable_max = os::allocatable_physical_memory(reasonable_max);
1526 1535
1527 if (!FLAG_IS_DEFAULT(InitialHeapSize)) { 1536 if (!FLAG_IS_DEFAULT(InitialHeapSize)) {
1528 // An initial heap size was specified on the command line, 1537 // An initial heap size was specified on the command line,