Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/gc_implementation/g1/collectionSetChooser.cpp
src/share/vm/gc_implementation/g1/collectionSetChooser.cpp
- changeset 2043
- 2dfd013a7465
- parent 1907
- c18cbe5936b8
- child 2314
- f95d63e2154a
equal
deleted
inserted
replaced
| 2042:fb8abd207dbe | 2043:2dfd013a7465 |
|---|---|
| 156 | 156 |
| 157 CollectionSetChooser::CollectionSetChooser() : | 157 CollectionSetChooser::CollectionSetChooser() : |
| 158 // The line below is the worst bit of C++ hackery I've ever written | 158 // The line below is the worst bit of C++ hackery I've ever written |
| 159 // (Detlefs, 11/23). You should think of it as equivalent to | 159 // (Detlefs, 11/23). You should think of it as equivalent to |
| 160 // "_regions(100, true)": initialize the growable array and inform it | 160 // "_regions(100, true)": initialize the growable array and inform it |
| 161 // that it should allocate its elem array(s) on the C heap. The first | 161 // that it should allocate its elem array(s) on the C heap. |
| 162 // argument, however, is actually a comma expression (new-expr, 100). | 162 // |
| 163 // The purpose of the new_expr is to inform the growable array that it | 163 // The first argument, however, is actually a comma expression |
| 164 // is *already* allocated on the C heap: it uses the placement syntax to | 164 // (set_allocation_type(this, C_HEAP), 100). The purpose of the |
| 165 // keep it from actually doing any allocation. | 165 // set_allocation_type() call is to replace the default allocation |
| 166 _markedRegions((ResourceObj::operator new (sizeof(GrowableArray<HeapRegion*>), | 166 // type for embedded objects STACK_OR_EMBEDDED with C_HEAP. It will |
| 167 (void*)&_markedRegions, | 167 // allow to pass the assert in GenericGrowableArray() which checks |
| 168 // that a growable array object must be on C heap if elements are. | |
| 169 // | |
| 170 // Note: containing object is allocated on C heap since it is CHeapObj. | |
| 171 // | |
| 172 _markedRegions((ResourceObj::set_allocation_type((address)&_markedRegions, | |
| 168 ResourceObj::C_HEAP), | 173 ResourceObj::C_HEAP), |
| 169 100), | 174 100), |
| 170 true), | 175 true), |
| 171 _curMarkedIndex(0), | 176 _curMarkedIndex(0), |
| 172 _numMarkedRegions(0), | 177 _numMarkedRegions(0), |
