1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
#include "backtrace_lib.h"
#include <libunwind.h>
#include <signal.h>
#include <util/system/backtrace.h>
namespace {
size_t BackTrace(void** p, size_t len, ucontext_t* con) {
unw_context_t context;
unw_cursor_t cursor;
if (unw_getcontext(&context)) {
return 0;
}
if (unw_init_local(&cursor, &context)) {
return 0;
}
const sigcontext* signal_mcontext = (const sigcontext*)&(con->uc_mcontext);
unw_set_reg(&cursor, UNW_X86_64_RSI, signal_mcontext->rsi);
unw_set_reg(&cursor, UNW_X86_64_RDI, signal_mcontext->rdi);
unw_set_reg(&cursor, UNW_X86_64_RBP, signal_mcontext->rbp);
unw_set_reg(&cursor, UNW_X86_64_RAX, signal_mcontext->rax);
unw_set_reg(&cursor, UNW_X86_64_RBX, signal_mcontext->rbx);
unw_set_reg(&cursor, UNW_X86_64_RCX, signal_mcontext->rcx);
unw_set_reg(&cursor, UNW_X86_64_R8, signal_mcontext->r8);
unw_set_reg(&cursor, UNW_X86_64_R9, signal_mcontext->r9);
unw_set_reg(&cursor, UNW_X86_64_R10, signal_mcontext->r10);
unw_set_reg(&cursor, UNW_X86_64_R11, signal_mcontext->r11);
unw_set_reg(&cursor, UNW_X86_64_R12, signal_mcontext->r12);
unw_set_reg(&cursor, UNW_X86_64_R13, signal_mcontext->r13);
unw_set_reg(&cursor, UNW_X86_64_R14, signal_mcontext->r14);
unw_set_reg(&cursor, UNW_X86_64_R15, signal_mcontext->r15);
unw_set_reg(&cursor, UNW_X86_64_RSP, signal_mcontext->rsp);
unw_set_reg(&cursor, UNW_REG_SP, signal_mcontext->rsp);
unw_set_reg(&cursor, UNW_REG_IP, signal_mcontext->rip);
size_t pos = 0;
p[pos++] = (void*)signal_mcontext->rip;
while (pos < len && unw_step(&cursor) > 0) {
unw_word_t ip = 0;
unw_get_reg(&cursor, UNW_REG_IP, &ip);
if (unw_is_signal_frame(&cursor)) {
continue;
}
p[pos++] = (void*)ip;
}
return pos;
}
} // namespace
namespace NYql {
namespace NBacktrace {
size_t CollectBacktrace(void** addresses, size_t limit, void* data) {
if (!data) {
return BackTrace(addresses, limit);
}
return BackTrace(addresses, limit, reinterpret_cast<ucontext_t*>(data));
}
} // namespace NBacktrace
} // namespace NYql
|
