ubgpsuite/lonetix/sys/sys_common.c

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2021-06-07 16:55:13 +02:00
// SPDX-License-Identifier: LGPL-3.0-or-later
/**
* \file sys/sys_common.c
*
* Cross-system utilities for system layer and error management.
*
* \copyright The DoubleFourteen Code Forge (C) All Rights Reserved
* \author Lorenzo Cogotti
*/
#include "sys/sys_local.h"
#include "sys/dbg.h"
#include "argv.h"
#include "numlib.h"
#include <errno.h>
#include <signal.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#define MAXTRACE 64
// Define this to always omit backtrace from Sys_Abort()
// #define NSTKTRACE
static THREAD_LOCAL SysErrStat sys_errs;
static void ReportError(SysRet code,
const char *reason,
const Srcloc *loc,
Boolean includeFileLoc)
{
const char *err = strerror(code);
Sys_Print(STDERR, "\t");
if (loc) {
if (includeFileLoc && loc->filename && loc->line > 0) {
char buf[64];
Utoa(loc->line, buf);
Sys_Print(STDERR, "Error occurred in file ");
Sys_Print(STDERR, loc->filename);
Sys_Print(STDERR, ":");
Sys_Print(STDERR, buf);
Sys_Print(STDERR, "\n\t");
}
if (loc->func) {
Sys_Print(STDERR, "[");
Sys_Print(STDERR, loc->func);
Sys_Print(STDERR, "()]: ");
}
}
Sys_Print(STDERR, reason);
if (err) {
Sys_Print(STDERR, ": ");
Sys_Print(STDERR, err);
}
Sys_Print(STDERR, ".\n");
}
NORETURN NOINLINE static void Sys_Abort(SysRet code,
const char *reason,
Srcloc *loc,
void *obj)
{
USED(obj);
loc->call_depth++; // include Sys_Abort() as well
if (com_progName) {
Sys_Print(STDERR, com_progName);
Sys_Print(STDERR, ": ");
}
Sys_Print(STDERR, "FATAL ERROR - Execution aborted in response to an unrecoverable system error.\n");
ReportError(code, reason, loc, /*includeFileLoc=*/TRUE);
#ifndef NSTKTRACE
void *trace[MAXTRACE + 1]; // +1 for detecting overflow
unsigned call_depth = loc->call_depth;
unsigned ntrace = Sys_GetBacktrace(trace, ARRAY_SIZE(trace));
if (ntrace > call_depth) {
ntrace -= call_depth; // omit error propagation from trace
Sys_Print(STDERR, "\nBacktrace:\n");
Sys_DumpBacktrace(STDERR, &trace[call_depth], MIN(ntrace, MAXTRACE));
if (ntrace > MAXTRACE)
Sys_Print(STDERR, "... [additional frames omitted]\n");
} else {
Sys_Print(STDERR, "No backtrace information available.\n");
}
#endif
#ifndef NDEBUG
if (Sys_IsDebuggerPresent())
raise(SIGTRAP); // bail out to debugger
#endif
abort();
}
NORETURN NOINLINE static void Sys_Quit(SysRet code,
const char *reason,
Srcloc *loc,
void *obj)
{
USED(obj);
loc->call_depth++; // include Sys_Quit() as well
if (com_progName) {
Sys_Print(STDERR, com_progName);
Sys_Print(STDERR, ": ");
}
Sys_Print(STDERR, "Terminate called in response to an unrecoverable system error\n");
Boolean includeFileLoc = FALSE;
#ifndef NDEBUG
includeFileLoc = TRUE;
#endif
ReportError(code, reason, loc, includeFileLoc);
_Exit(EXIT_FAILURE);
}
Judgement _Sys_SetErrStat(SysRet code,
const char *reason,
const char *filename,
const char *func,
unsigned long long line,
unsigned depth)
{
sys_errs.code = code;
if (code == 0)
return OK;
void (*err_func)(SysRet, const char *, Srcloc *, void *);
Srcloc loc;
err_func = sys_errs.func;
// Remap SYS_ERR_ABORT and SYS_ERR_QUIT to correct function
if (err_func == SYS_ERR_ABORT)
err_func = Sys_Abort;
if (err_func == SYS_ERR_QUIT)
err_func = Sys_Quit;
if (err_func) {
loc.filename = filename;
loc.func = func;
loc.line = line;
loc.call_depth = depth + 1; // +1 for this function
err_func(code, reason, &loc, sys_errs.obj);
}
return NG;
}
void _Sys_OutOfMemory(const char *file,
const char *func,
unsigned long long line,
unsigned depth)
{
depth++; // include _Sys_OutOfMemory() as well
_Sys_SetErrStat(ENOMEM, "Out of memory", file, func, line, depth);
}
void _Sys_FatalError(SysRet code,
const char *reason,
const char *file,
const char *func,
unsigned long long line,
unsigned depth)
{
depth++; // include _Sys_FatalError() as well
Srcloc loc;
loc.filename = file;
loc.func = func;
loc.line = line;
loc.call_depth = depth;
Sys_Abort(code, reason, &loc, NULL);
}
SysRet Sys_GetErrStat(SysErrStat *stat)
{
if (stat)
*stat = sys_errs;
return sys_errs.code;
}
void Sys_SetErrFunc(void (*func)(SysRet, const char *, Srcloc *, void *),
void *obj)
{
sys_errs.func = func;
sys_errs.obj = obj;
}