Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/utilities/nativeCallStack.cpp
src/share/vm/utilities/nativeCallStack.cpp
- changeset 9337
- fc1c693e80bb
- parent 7078
- c6211b707068
- child 9485
- 7a6239517d46
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| 9336:0fa4c2b668b9 | 9337:fc1c693e80bb |
|---|---|
| 53 _stack[index] = pc[index]; | 53 _stack[index] = pc[index]; |
| 54 } | 54 } |
| 55 for (; index < NMT_TrackingStackDepth; index ++) { | 55 for (; index < NMT_TrackingStackDepth; index ++) { |
| 56 _stack[index] = NULL; | 56 _stack[index] = NULL; |
| 57 } | 57 } |
| 58 _hash_value = 0; | |
| 58 } | 59 } |
| 59 | 60 |
| 60 // number of stack frames captured | 61 // number of stack frames captured |
| 61 int NativeCallStack::frames() const { | 62 int NativeCallStack::frames() const { |
| 62 int index; | 63 int index; |
| 67 } | 68 } |
| 68 return index; | 69 return index; |
| 69 } | 70 } |
| 70 | 71 |
| 71 // Hash code. Any better algorithm? | 72 // Hash code. Any better algorithm? |
| 72 int NativeCallStack::hash() const { | 73 unsigned int NativeCallStack::hash() const { |
| 73 long hash_val = _hash_value; | 74 uintptr_t hash_val = _hash_value; |
| 74 if (hash_val == 0) { | 75 if (hash_val == 0) { |
| 75 long pc; | 76 for (int index = 0; index < NMT_TrackingStackDepth; index++) { |
| 76 int index; | 77 if (_stack[index] == NULL) break; |
| 77 for (index = 0; index < NMT_TrackingStackDepth; index ++) { | 78 hash_val += (uintptr_t)_stack[index]; |
| 78 pc = (long)_stack[index]; | |
| 79 if (pc == 0) break; | |
| 80 hash_val += pc; | |
| 81 } | 79 } |
| 82 | 80 |
| 83 NativeCallStack* p = const_cast<NativeCallStack*>(this); | 81 NativeCallStack* p = const_cast<NativeCallStack*>(this); |
| 84 p->_hash_value = (int)(hash_val & 0xFFFFFFFF); | 82 p->_hash_value = (unsigned int)(hash_val & 0xFFFFFFFF); |
| 85 } | 83 } |
| 86 return _hash_value; | 84 return _hash_value; |
| 87 } | 85 } |
| 88 | 86 |
| 89 void NativeCallStack::print_on(outputStream* out) const { | 87 void NativeCallStack::print_on(outputStream* out) const { |
