Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/runtime/biasedLocking.cpp
src/share/vm/runtime/biasedLocking.cpp
- changeset 493
- 7ee622712fcf
- parent 435
- a61af66fc99e
- child 519
- 6e085831cad7
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| 492:ff0979201b06 | 493:7ee622712fcf |
|---|---|
| 36 Klass::cast(k)->set_prototype_header(markOopDesc::biased_locking_prototype()); | 36 Klass::cast(k)->set_prototype_header(markOopDesc::biased_locking_prototype()); |
| 37 } | 37 } |
| 38 | 38 |
| 39 class VM_EnableBiasedLocking: public VM_Operation { | 39 class VM_EnableBiasedLocking: public VM_Operation { |
| 40 public: | 40 public: |
| 41 VM_EnableBiasedLocking() {} | 41 VM_EnableBiasedLocking() {} |
| 42 VMOp_Type type() const { return VMOp_EnableBiasedLocking; } | 42 VMOp_Type type() const { return VMOp_EnableBiasedLocking; } |
| 43 Mode evaluation_mode() const { return _async_safepoint; } | |
| 44 bool is_cheap_allocated() const { return true; } | |
| 45 | |
| 43 void doit() { | 46 void doit() { |
| 44 // Iterate the system dictionary enabling biased locking for all | 47 // Iterate the system dictionary enabling biased locking for all |
| 45 // currently loaded classes | 48 // currently loaded classes |
| 46 SystemDictionary::classes_do(enable_biased_locking); | 49 SystemDictionary::classes_do(enable_biased_locking); |
| 47 // Indicate that future instances should enable it as well | 50 // Indicate that future instances should enable it as well |
| 60 class EnableBiasedLockingTask : public PeriodicTask { | 63 class EnableBiasedLockingTask : public PeriodicTask { |
| 61 public: | 64 public: |
| 62 EnableBiasedLockingTask(size_t interval_time) : PeriodicTask(interval_time) {} | 65 EnableBiasedLockingTask(size_t interval_time) : PeriodicTask(interval_time) {} |
| 63 | 66 |
| 64 virtual void task() { | 67 virtual void task() { |
| 65 VM_EnableBiasedLocking op; | 68 // Use async VM operation to avoid blocking the Watcher thread. |
| 66 VMThread::execute(&op); | 69 // VM Thread will free C heap storage. |
| 70 VM_EnableBiasedLocking *op = new VM_EnableBiasedLocking(); | |
| 71 VMThread::execute(op); | |
| 67 | 72 |
| 68 // Reclaim our storage and disenroll ourself | 73 // Reclaim our storage and disenroll ourself |
| 69 delete this; | 74 delete this; |
| 70 } | 75 } |
| 71 }; | 76 }; |
