roman_version
30 #include "memory/oopFactory.hpp"
31 #include "oops/oop.inline.hpp"
32 #include "oops/objArrayOop.inline.hpp"
33 #include "prims/stackwalk.hpp"
34 #include "runtime/globals.hpp"
35 #include "runtime/handles.inline.hpp"
36 #include "runtime/javaCalls.hpp"
37 #include "runtime/vframe.inline.hpp"
38 #include "utilities/globalDefinitions.hpp"
39
40 // setup and cleanup actions
41 void BaseFrameStream::setup_magic_on_entry(objArrayHandle frames_array) {
42 frames_array->obj_at_put(magic_pos, _thread->threadObj());
43 _anchor = address_value();
44 assert(check_magic(frames_array), "invalid magic");
45 }
46
47 bool BaseFrameStream::check_magic(objArrayHandle frames_array) {
48 oop m1 = frames_array->obj_at(magic_pos);
49 jlong m2 = _anchor;
50 if (m1 == _thread->threadObj() && m2 == address_value()) return true;
51 return false;
52 }
53
54 bool BaseFrameStream::cleanup_magic_on_exit(objArrayHandle frames_array) {
55 bool ok = check_magic(frames_array);
56 frames_array->obj_at_put(magic_pos, NULL);
57 _anchor = 0L;
58 return ok;
59 }
60
61 JavaFrameStream::JavaFrameStream(JavaThread* thread, int mode)
62 : BaseFrameStream(thread), _vfst(thread) {
63 _need_method_info = StackWalk::need_method_info(mode);
64 }
65
66 void JavaFrameStream::next() { _vfst.next();}
67
68 // Returns the BaseFrameStream for the current stack being traversed.
69 //
70 // Parameters:
71 // thread Current Java thread.
72 // magic Magic value used for each stack walking
73 // frames_array User-supplied buffers. The 0th element is reserved
74 // for this BaseFrameStream to use
75 //
76 BaseFrameStream* BaseFrameStream::from_current(JavaThread* thread, jlong magic,
77 objArrayHandle frames_array)
78 {
79 assert(thread != NULL && thread->is_Java_thread(), "");
80 oop m1 = frames_array->obj_at(magic_pos);
81 if (m1 != thread->threadObj()) return NULL;
82 if (magic == 0L) return NULL;
83 BaseFrameStream* stream = (BaseFrameStream*) (intptr_t) magic;
84 if (!stream->is_valid_in(thread, frames_array)) return NULL;
85 return stream;
86 }
87
88 // Unpacks one or more frames into user-supplied buffers.
89 // Updates the end index, and returns the number of unpacked frames.
90 // Always start with the existing vfst.method and bci.
91 // Do not call vfst.next to advance over the last returned value.
92 // In other words, do not leave any stale data in the vfst.
93 //
94 // Parameters:
95 // mode Restrict which frames to be decoded.
96 // BaseFrameStream stream of frames
97 // max_nframes Maximum number of frames to be filled.
98 // start_index Start index to the user-supplied buffers.
99 // frames_array Buffer to store Class or StackFrame in, starting at start_index.
100 // frames array is a Class<?>[] array when only getting caller
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30 #include "memory/oopFactory.hpp"
31 #include "oops/oop.inline.hpp"
32 #include "oops/objArrayOop.inline.hpp"
33 #include "prims/stackwalk.hpp"
34 #include "runtime/globals.hpp"
35 #include "runtime/handles.inline.hpp"
36 #include "runtime/javaCalls.hpp"
37 #include "runtime/vframe.inline.hpp"
38 #include "utilities/globalDefinitions.hpp"
39
40 // setup and cleanup actions
41 void BaseFrameStream::setup_magic_on_entry(objArrayHandle frames_array) {
42 frames_array->obj_at_put(magic_pos, _thread->threadObj());
43 _anchor = address_value();
44 assert(check_magic(frames_array), "invalid magic");
45 }
46
47 bool BaseFrameStream::check_magic(objArrayHandle frames_array) {
48 oop m1 = frames_array->obj_at(magic_pos);
49 jlong m2 = _anchor;
50 if (oopDesc::equals(m1, _thread->threadObj()) && m2 == address_value()) return true;
51 return false;
52 }
53
54 bool BaseFrameStream::cleanup_magic_on_exit(objArrayHandle frames_array) {
55 bool ok = check_magic(frames_array);
56 frames_array->obj_at_put(magic_pos, NULL);
57 _anchor = 0L;
58 return ok;
59 }
60
61 JavaFrameStream::JavaFrameStream(JavaThread* thread, int mode)
62 : BaseFrameStream(thread), _vfst(thread) {
63 _need_method_info = StackWalk::need_method_info(mode);
64 }
65
66 void JavaFrameStream::next() { _vfst.next();}
67
68 // Returns the BaseFrameStream for the current stack being traversed.
69 //
70 // Parameters:
71 // thread Current Java thread.
72 // magic Magic value used for each stack walking
73 // frames_array User-supplied buffers. The 0th element is reserved
74 // for this BaseFrameStream to use
75 //
76 BaseFrameStream* BaseFrameStream::from_current(JavaThread* thread, jlong magic,
77 objArrayHandle frames_array)
78 {
79 assert(thread != NULL && thread->is_Java_thread(), "");
80 oop m1 = frames_array->obj_at(magic_pos);
81 if (!oopDesc::equals(m1, thread->threadObj())) return NULL;
82 if (magic == 0L) return NULL;
83 BaseFrameStream* stream = (BaseFrameStream*) (intptr_t) magic;
84 if (!stream->is_valid_in(thread, frames_array)) return NULL;
85 return stream;
86 }
87
88 // Unpacks one or more frames into user-supplied buffers.
89 // Updates the end index, and returns the number of unpacked frames.
90 // Always start with the existing vfst.method and bci.
91 // Do not call vfst.next to advance over the last returned value.
92 // In other words, do not leave any stale data in the vfst.
93 //
94 // Parameters:
95 // mode Restrict which frames to be decoded.
96 // BaseFrameStream stream of frames
97 // max_nframes Maximum number of frames to be filled.
98 // start_index Start index to the user-supplied buffers.
99 // frames_array Buffer to store Class or StackFrame in, starting at start_index.
100 // frames array is a Class<?>[] array when only getting caller
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