spielwiese
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Last change
on this file since 17fe09 was
17fe09,
checked in by Oleksandr Motsak <motsak@…>, 10 years ago
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Avoid crashing via __builtin_frame_address(3+) on Mac OS X
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-
Property mode set to
100644
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File size:
2.3 KB
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| 1 | /******************************************************************* |
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| 2 | * File: omGetBackTrace.c |
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| 3 | * Purpose: routines for getting Backtraces of stack |
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| 4 | * Author: obachman (Olaf Bachmann) |
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| 5 | * Created: 11/99 |
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| 6 | *******************************************************************/ |
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| 7 | #ifndef OM_NDEBUG |
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| 8 | |
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| 9 | #if __GNUC__ > 1 |
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| 10 | |
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| 11 | static void* om_this_main_frame_addr = 0; |
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| 12 | |
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| 13 | void omInitGetBackTrace() |
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| 14 | { |
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| 15 | if (__builtin_frame_address(0) != 0 && |
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| 16 | __builtin_frame_address(1) > __builtin_frame_address(0)) |
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| 17 | om_this_main_frame_addr = __builtin_frame_address(1); |
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| 18 | } |
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| 19 | |
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| 20 | #define OM_GET_BACK_TRACE(j) \ |
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| 21 | case j: \ |
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| 22 | { \ |
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| 23 | f_addr = __builtin_frame_address(j); \ |
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| 24 | if (f_addr > this_frame && f_addr < om_this_main_frame_addr) \ |
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| 25 | { \ |
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| 26 | r_addr = __builtin_return_address(j); \ |
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| 27 | if (r_addr) \ |
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| 28 | { \ |
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| 29 | bt[i] = r_addr; \ |
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| 30 | i++; \ |
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| 31 | if (i >= max) break; \ |
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| 32 | } \ |
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| 33 | else break; \ |
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| 34 | } \ |
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| 35 | else break; \ |
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| 36 | } |
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| 37 | |
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| 38 | int omGetBackTrace(void** bt, int start, int max) |
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| 39 | { |
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| 40 | int i = 0; |
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| 41 | void* this_frame = __builtin_frame_address(0); |
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| 42 | void* f_addr; |
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| 43 | void* r_addr; |
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| 44 | |
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| 45 | start++; |
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| 46 | |
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| 47 | switch(start) |
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| 48 | { |
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| 49 | OM_GET_BACK_TRACE(1) |
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| 50 | OM_GET_BACK_TRACE(2) |
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| 51 | /* OM_GET_BACK_TRACE(3) |
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| 52 | OM_GET_BACK_TRACE(4) |
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| 53 | OM_GET_BACK_TRACE(5) |
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| 54 | OM_GET_BACK_TRACE(6) |
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| 55 | OM_GET_BACK_TRACE(7) |
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| 56 | OM_GET_BACK_TRACE(8) |
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| 57 | OM_GET_BACK_TRACE(9) |
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| 58 | OM_GET_BACK_TRACE(10) |
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| 59 | OM_GET_BACK_TRACE(11) |
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| 60 | OM_GET_BACK_TRACE(12) |
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| 61 | OM_GET_BACK_TRACE(13) |
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| 62 | OM_GET_BACK_TRACE(14) |
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| 63 | OM_GET_BACK_TRACE(15) |
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| 64 | OM_GET_BACK_TRACE(16) |
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| 65 | OM_GET_BACK_TRACE(17) */ |
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| 66 | } |
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| 67 | if (i < max) bt[i] = 0; |
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| 68 | return i; |
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| 69 | } |
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| 70 | |
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| 71 | #endif /* __GNUC__ > 1 */ |
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| 72 | |
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| 73 | #endif /* ! OM_NDEBUG */ |
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