67 lines
1.9 KiB
C++
67 lines
1.9 KiB
C++
/*
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* context.h
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*
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* Created on: Jan 28, 2020
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* Author: nnosov
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*/
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#ifndef FRAMEWORK_CONTEXT_H_
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#define FRAMEWORK_CONTEXT_H_
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#include <string.h>
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#include <stdlib.h>
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#include <execinfo.h>
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#include <libunwind.h>
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#include <elfutils/libdwfl.h>
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#include "logger/log.h"
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typedef struct __pst_context {
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__pst_context(ucontext_t* hctx) : hcontext(hctx)
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{
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clean_print();
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base_addr = 0;
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sp = 0;
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cfa = 0;
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curr_frame = NULL;
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next_frame = NULL;
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frame = NULL;
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dwfl = NULL;
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module = NULL;
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}
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bool print(const char* fmt, ...);
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void log(SC_LogSeverity severity, const char*fmt, ...);
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uint32_t print_expr_block(Dwarf_Op *exprs, int len, char* buff, uint32_t buff_size, Dwarf_Attribute* attr = 0);
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void print_registers(int from, int to);
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void print_stack(int max, uint64_t next_cfa);
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void clean_print() {
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buff[0] = 0;
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offset = 0;
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}
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const char* get_print() {
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return buff;
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}
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ucontext_t* hcontext; // context of signal handler
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unw_context_t context; // context of stack trace
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unw_cursor_t cursor;
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unw_cursor_t* curr_frame; // callee libunwind frame
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unw_cursor_t* next_frame; // caller libunwind frame
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Dwarf_Addr base_addr; // base address where process loaded
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Dwarf_Addr sp;
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Dwarf_Addr cfa;
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Dwarf_Frame* frame; // currently examined libdwfl frame
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Dwfl* dwfl; // DWARF context
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Dwfl_Module* module; // currently processed CU
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protected:
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char buff[8192]; // stack trace buffer
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uint32_t offset; // offset in the 'buff'
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} pst_context;
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#endif /* FRAMEWORK_CONTEXT_H_ */
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