util/system/backtrace.h


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

#pragma once
 
#include <util/generic/fwd.h>
#include <util/system/defaults.h>
 
class IOutputStream;
 
size_t BackTrace(void** p, size_t len); 
 
struct TResolvedSymbol { 
    const char* Name; 
    void* NearestSymbol; 
}; 
 
TResolvedSymbol ResolveSymbol(void* sym, char* buf, size_t len); 
 
void FormatBackTrace(IOutputStream* out, void* const* backtrace, size_t backtraceSize);
void FormatBackTrace(IOutputStream* out);
void PrintBackTrace(); 

using TFormatBackTraceFn = void (*)(IOutputStream*, void* const* backtrace, size_t backtraceSize);

TFormatBackTraceFn SetFormatBackTraceFn(TFormatBackTraceFn f);
TFormatBackTraceFn GetFormatBackTraceFn();

using TBackTraceView = TArrayRef<void* const>;

class TBackTrace {
private:
    static constexpr size_t CAPACITY = 300;
    void* Data[CAPACITY];
    size_t Size;
 
public:
    TBackTrace();
    void Capture();
    void PrintTo(IOutputStream&) const;
    TString PrintToString() const;
    size_t size() const;
    const void* const* data() const;
    operator TBackTraceView() const;

    static TBackTrace FromCurrentException();
};