He Kuang | f6d7253 | 2016-06-03 03:33:17 +0000 | [diff] [blame] | 1 | #include "unwind.h" |
| 2 | #include "thread.h" |
| 3 | |
| 4 | struct unwind_libunwind_ops __weak *local_unwind_libunwind_ops; |
| 5 | |
| 6 | static void unwind__register_ops(struct thread *thread, |
| 7 | struct unwind_libunwind_ops *ops) |
| 8 | { |
| 9 | thread->unwind_libunwind_ops = ops; |
| 10 | } |
| 11 | |
| 12 | int unwind__prepare_access(struct thread *thread) |
| 13 | { |
| 14 | unwind__register_ops(thread, local_unwind_libunwind_ops); |
| 15 | |
| 16 | return thread->unwind_libunwind_ops->prepare_access(thread); |
| 17 | } |
| 18 | |
| 19 | void unwind__flush_access(struct thread *thread) |
| 20 | { |
| 21 | if (thread->unwind_libunwind_ops) |
| 22 | thread->unwind_libunwind_ops->flush_access(thread); |
| 23 | } |
| 24 | |
| 25 | void unwind__finish_access(struct thread *thread) |
| 26 | { |
| 27 | if (thread->unwind_libunwind_ops) |
| 28 | thread->unwind_libunwind_ops->finish_access(thread); |
| 29 | } |
| 30 | |
| 31 | int unwind__get_entries(unwind_entry_cb_t cb, void *arg, |
| 32 | struct thread *thread, |
| 33 | struct perf_sample *data, int max_stack) |
| 34 | { |
| 35 | if (thread->unwind_libunwind_ops) |
| 36 | return thread->unwind_libunwind_ops->get_entries(cb, arg, thread, data, max_stack); |
| 37 | return 0; |
| 38 | } |