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11fdf7f2 TL |
1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | ||
7c673cae FG |
4 | #ifndef CEPH_BACKTRACE_H |
5 | #define CEPH_BACKTRACE_H | |
6 | ||
7 | #include "acconfig.h" | |
8 | #include <iosfwd> | |
9 | #ifdef HAVE_EXECINFO_H | |
10 | #include <execinfo.h> | |
11 | #endif | |
12 | #include <stdlib.h> | |
13 | ||
20effc67 TL |
14 | #include <list> |
15 | #include <string> | |
16 | ||
7c673cae FG |
17 | namespace ceph { |
18 | ||
11fdf7f2 TL |
19 | class Formatter; |
20 | ||
7c673cae | 21 | struct BackTrace { |
20effc67 TL |
22 | virtual ~BackTrace() {} |
23 | virtual void print(std::ostream& out) const = 0; | |
24 | virtual void dump(Formatter *f) const = 0; | |
25 | }; | |
26 | ||
27 | inline std::ostream& operator<<(std::ostream& out, const BackTrace& bt) { | |
28 | bt.print(out); | |
29 | return out; | |
30 | } | |
31 | ||
32 | ||
33 | struct ClibBackTrace : public BackTrace { | |
34 | const static int max = 32; | |
7c673cae FG |
35 | |
36 | int skip; | |
224ce89b | 37 | void *array[max]{}; |
7c673cae FG |
38 | size_t size; |
39 | char **strings; | |
40 | ||
20effc67 | 41 | explicit ClibBackTrace(int s) { |
7c673cae | 42 | #ifdef HAVE_EXECINFO_H |
20effc67 | 43 | skip = s; |
7c673cae FG |
44 | size = backtrace(array, max); |
45 | strings = backtrace_symbols(array, size); | |
46 | #else | |
47 | skip = 0; | |
48 | size = 0; | |
49 | strings = nullptr; | |
50 | #endif | |
51 | } | |
20effc67 | 52 | ~ClibBackTrace() { |
7c673cae FG |
53 | free(strings); |
54 | } | |
55 | ||
20effc67 TL |
56 | ClibBackTrace(const ClibBackTrace& other); |
57 | const ClibBackTrace& operator=(const ClibBackTrace& other); | |
58 | ||
59 | void print(std::ostream& out) const override; | |
60 | void dump(Formatter *f) const override; | |
7c673cae | 61 | |
f67539c2 | 62 | static std::string demangle(const char* name); |
7c673cae FG |
63 | }; |
64 | ||
20effc67 TL |
65 | |
66 | struct PyBackTrace : public BackTrace { | |
67 | std::list<std::string> strings; | |
68 | ||
69 | explicit PyBackTrace(std::list<std::string>& s) : strings(s) {} | |
70 | ||
71 | void dump(Formatter *f) const override; | |
72 | void print(std::ostream& out) const override; | |
73 | }; | |
74 | ||
7c673cae FG |
75 | |
76 | } | |
77 | ||
78 | #endif |