38
39 if (fillStack) {
40 os::get_native_stack(_stack, NMT_TrackingStackDepth, toSkip);
41 } else {
42 for (int index = 0; index < NMT_TrackingStackDepth; index ++) {
43 _stack[index] = NULL;
44 }
45 }
46 }
47
48 NativeCallStack::NativeCallStack(address* pc, int frameCount) {
49 int frameToCopy = (frameCount < NMT_TrackingStackDepth) ?
50 frameCount : NMT_TrackingStackDepth;
51 int index;
52 for (index = 0; index < frameToCopy; index ++) {
53 _stack[index] = pc[index];
54 }
55 for (; index < NMT_TrackingStackDepth; index ++) {
56 _stack[index] = NULL;
57 }
58 }
59
60 // number of stack frames captured
61 int NativeCallStack::frames() const {
62 int index;
63 for (index = 0; index < NMT_TrackingStackDepth; index ++) {
64 if (_stack[index] == NULL) {
65 break;
66 }
67 }
68 return index;
69 }
70
71 // Hash code. Any better algorithm?
72 int NativeCallStack::hash() const {
73 long hash_val = _hash_value;
74 if (hash_val == 0) {
75 long pc;
76 int index;
77 for (index = 0; index < NMT_TrackingStackDepth; index ++) {
78 pc = (long)_stack[index];
79 if (pc == 0) break;
80 hash_val += pc;
81 }
82
83 NativeCallStack* p = const_cast<NativeCallStack*>(this);
84 p->_hash_value = (int)(hash_val & 0xFFFFFFFF);
85 }
86 return _hash_value;
87 }
88
89 void NativeCallStack::print_on(outputStream* out) const {
90 print_on(out, 0);
91 }
92
93 // Decode and print this call path
94 void NativeCallStack::print_on(outputStream* out, int indent) const {
95 address pc;
96 char buf[1024];
97 int offset;
98 if (is_empty()) {
99 for (int index = 0; index < indent; index ++) out->print(" ");
100 #if PLATFORM_NATIVE_STACK_WALKING_SUPPORTED
101 out->print("[BOOTSTRAP]");
102 #else
103 out->print("[No stack]");
104 #endif
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38
39 if (fillStack) {
40 os::get_native_stack(_stack, NMT_TrackingStackDepth, toSkip);
41 } else {
42 for (int index = 0; index < NMT_TrackingStackDepth; index ++) {
43 _stack[index] = NULL;
44 }
45 }
46 }
47
48 NativeCallStack::NativeCallStack(address* pc, int frameCount) {
49 int frameToCopy = (frameCount < NMT_TrackingStackDepth) ?
50 frameCount : NMT_TrackingStackDepth;
51 int index;
52 for (index = 0; index < frameToCopy; index ++) {
53 _stack[index] = pc[index];
54 }
55 for (; index < NMT_TrackingStackDepth; index ++) {
56 _stack[index] = NULL;
57 }
58 _hash_value = 0;
59 }
60
61 // number of stack frames captured
62 int NativeCallStack::frames() const {
63 int index;
64 for (index = 0; index < NMT_TrackingStackDepth; index ++) {
65 if (_stack[index] == NULL) {
66 break;
67 }
68 }
69 return index;
70 }
71
72 // Hash code. Any better algorithm?
73 unsigned int NativeCallStack::hash() const {
74 uintptr_t hash_val = _hash_value;
75 if (hash_val == 0) {
76 for (int index = 0; index < NMT_TrackingStackDepth; index++) {
77 if (_stack[index] == NULL) break;
78 hash_val += (uintptr_t)_stack[index];
79 }
80
81 NativeCallStack* p = const_cast<NativeCallStack*>(this);
82 p->_hash_value = (unsigned int)(hash_val & 0xFFFFFFFF);
83 }
84 return _hash_value;
85 }
86
87 void NativeCallStack::print_on(outputStream* out) const {
88 print_on(out, 0);
89 }
90
91 // Decode and print this call path
92 void NativeCallStack::print_on(outputStream* out, int indent) const {
93 address pc;
94 char buf[1024];
95 int offset;
96 if (is_empty()) {
97 for (int index = 0; index < indent; index ++) out->print(" ");
98 #if PLATFORM_NATIVE_STACK_WALKING_SUPPORTED
99 out->print("[BOOTSTRAP]");
100 #else
101 out->print("[No stack]");
102 #endif
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