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/*
* Author: Sven Gothel <sgothel@jausoft.com>
* Copyright (c) 2020 Gothel Software e.K.
* Copyright (c) 2020 ZAFENA AB
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <jau/debug.hpp>
#include <cstdarg>
#define UNW_LOCAL_ONLY
#include <libunwind.h>
#include <cxxabi.h>
using namespace jau;
std::string jau::get_backtrace(const bool skip_anon_frames, const jau::snsize_t max_frames, const jau::snsize_t skip_frames) noexcept {
// symbol:
// 1: _ZN9direct_bt10DBTAdapter14startDiscoveryEbNS_19HCILEOwnAddressTypeEtt + 0x58d @ ip 0x7faa959d6daf, sp 0x7ffe38f301e0
// de-mangled:
// 1: direct_bt::DBTAdapter::startDiscovery(bool, direct_bt::HCILEOwnAddressType, unsigned short, unsigned short) + 0x58d @ ip 0x7f687b459071, sp 0x7fff2bf795d0
std::string out;
jau::snsize_t frame=0;
int res;
char cstr[256];
unw_context_t uc;
unw_word_t ip, sp;
unw_cursor_t cursor;
unw_word_t offset;
unw_getcontext(&uc);
unw_init_local(&cursor, &uc);
bool last_frame_anon = false;
while( unw_step(&cursor) > 0 && ( 0 > max_frames || ( max_frames + skip_frames ) > ( frame + 1 ) ) ) {
frame++;
if( skip_frames > frame ) {
continue;
}
bool append_line;
snprintf(cstr, sizeof(cstr), "%3zd: ", (ssize_t)frame);
std::string line(cstr);
unw_get_reg(&cursor, UNW_REG_IP, &ip); // instruction pointer (pc)
unw_get_reg(&cursor, UNW_REG_SP, &sp); // stack pointer
if( 0 == ( res = unw_get_proc_name(&cursor, cstr, sizeof(cstr), &offset) ) ) {
int status;
char *real_name;
cstr[sizeof(cstr) -1] = 0; // fail safe
if ( (real_name = abi::__cxa_demangle(cstr, nullptr, nullptr, &status)) == nullptr ) {
line.append(cstr); // didn't work, use cstr
} else {
line.append(real_name);
free( real_name );
}
snprintf(cstr, sizeof(cstr), " + 0x%lx @ ip %p, sp %p", (unsigned long)offset, (void*)ip, (void*)sp);
append_line = true;
last_frame_anon = false;
} else {
// anon frame w/o proc-name
snprintf(cstr, sizeof(cstr), "__no_proc_name__ @ ip %p, sp %p", (void*)ip, (void*)sp);
append_line = !skip_anon_frames || !last_frame_anon;
last_frame_anon = true;
}
line.append(cstr);
line.append("\n");
if( append_line ) {
out.append(line);
}
}
return out;
}
void jau::print_backtrace(const bool skip_anon_frames, const jau::snsize_t max_frames, const jau::snsize_t skip_frames) noexcept {
fprintf(stderr, "%s", get_backtrace(skip_anon_frames, max_frames, skip_frames).c_str());
fflush(stderr);
}
void jau::DBG_PRINT_impl(const char * format, ...) noexcept {
fprintf(stderr, "[%s] Debug: ", jau::to_decstring(environment::getElapsedMillisecond(), ',', 9).c_str());
va_list args;
va_start (args, format);
vfprintf(stderr, format, args);
va_end (args);
fprintf(stderr, "\n");
fflush(stderr);
}
void jau::WORDY_PRINT_impl(const char * format, ...) noexcept {
fprintf(stderr, "[%s] Wordy: ", jau::to_decstring(environment::getElapsedMillisecond(), ',', 9).c_str());
va_list args;
va_start (args, format);
vfprintf(stderr, format, args);
va_end (args);
fprintf(stderr, "\n");
fflush(stderr);
}
void jau::ABORT_impl(const char *func, const char *file, const int line, const char * format, ...) noexcept {
fprintf(stderr, "[%s] ABORT @ %s:%d %s: ", jau::to_decstring(environment::getElapsedMillisecond(), ',', 9).c_str(), file, line, func);
va_list args;
va_start (args, format);
vfprintf(stderr, format, args);
va_end (args);
fprintf(stderr, "; last errno %d %s\n", errno, strerror(errno));
fflush(stderr);
jau::print_backtrace(true /* skip_anon_frames */, -1 /* max_frames -> all */, 3 /* skip_frames: this() + print_b*() + get_b*() */);
abort();
}
void jau::ERR_PRINTv(const char *func, const char *file, const int line, const char * format, va_list args) noexcept {
fprintf(stderr, "[%s] Error @ %s:%d %s: ", jau::to_decstring(environment::getElapsedMillisecond(), ',', 9).c_str(), file, line, func);
vfprintf(stderr, format, args);
fprintf(stderr, "; last errno %d %s\n", errno, strerror(errno));
fflush(stderr);
jau::print_backtrace(true /* skip_anon_frames */, 4 /* max_frames */, 3 /* skip_frames: this() + print_b*() + get_b*() */);
}
void jau::ERR_PRINT_impl(const char *prefix, const bool backtrace, const char *func, const char *file, const int line, const char * format, ...) noexcept {
fprintf(stderr, "[%s] %s @ %s:%d %s: ", jau::to_decstring(environment::getElapsedMillisecond(), ',', 9).c_str(), prefix, file, line, func);
va_list args;
va_start (args, format);
vfprintf(stderr, format, args);
va_end (args);
fprintf(stderr, "; last errno %d %s\n", errno, strerror(errno));
fflush(stderr);
if( backtrace ) {
jau::print_backtrace(true /* skip_anon_frames */, 4 /* max_frames */, 3 /* skip_frames: this() + print_b*() + get_b*() */);
}
}
void jau::WARN_PRINTv(const char *func, const char *file, const int line, const char * format, va_list args) noexcept {
fprintf(stderr, "[%s] Warning @ %s:%d %s: ", jau::to_decstring(environment::getElapsedMillisecond(), ',', 9).c_str(), file, line, func);
vfprintf(stderr, format, args);
fprintf(stderr, "\n");
fflush(stderr);
}
void jau::WARN_PRINT_impl(const char *func, const char *file, const int line, const char * format, ...) noexcept {
fprintf(stderr, "[%s] Warning @ %s:%d %s: ", jau::to_decstring(environment::getElapsedMillisecond(), ',', 9).c_str(), file, line, func);
va_list args;
va_start (args, format);
vfprintf(stderr, format, args);
va_end (args);
fprintf(stderr, "\n");
fflush(stderr);
}
void jau::INFO_PRINT(const char * format, ...) noexcept {
fprintf(stderr, "[%s] Info: ", jau::to_decstring(environment::getElapsedMillisecond(), ',', 9).c_str());
va_list args;
va_start (args, format);
vfprintf(stderr, format, args);
va_end (args);
fprintf(stderr, "\n");
fflush(stderr);
}
void jau::PLAIN_PRINT(const bool printPrefix, const char * format, ...) noexcept {
if( printPrefix ) {
fprintf(stderr, "[%s] ", jau::to_decstring(environment::getElapsedMillisecond(), ',', 9).c_str());
}
va_list args;
va_start (args, format);
vfprintf(stderr, format, args);
va_end (args);
fprintf(stderr, "\n");
fflush(stderr);
}
int jau::fprintf_td(FILE* stream, const char * format, ...) noexcept {
int res = ::fprintf(stderr, "[%s] ", jau::to_decstring(environment::getElapsedMillisecond(), ',', 9).c_str());
va_list args;
va_start (args, format);
res += ::vfprintf(stream, format, args);
va_end (args);
return res;
}
void jau::COND_PRINT_impl(const char * format, ...) noexcept {
fprintf(stderr, "[%s] ", jau::to_decstring(environment::getElapsedMillisecond(), ',', 9).c_str());
va_list args;
va_start (args, format);
vfprintf(stderr, format, args);
va_end (args);
fprintf(stderr, "\n");
fflush(stderr);
}
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