added sys/log module and setup function

This commit is contained in:
Sven Vogel 2024-04-12 17:24:12 +02:00
parent 73bfbd15f9
commit f90ee70a8d
3 changed files with 204 additions and 0 deletions

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@ -1,6 +1,19 @@
#include <sys/log.h>
#include <yacc/parser.tab.h>
#define LOG_LEVEL LOG_LEVEL_DEBUG
void setup(void)
{
log_init();
DEBUG("starting gemstone...");
DEBUG("finished starting up gemstone...");
}
int main() {
setup();
yyparse();
return 0;
}

110
src/sys/log.c Normal file
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#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/log.h>
static struct Logger_t {
FILE** streams;
size_t stream_count;
} GlobalLogger;
void log_init(void)
{
log_register_stream(LOG_DEFAULT_STREAM);
}
void log_register_stream(FILE* restrict stream)
{
if (GlobalLogger.stream_count == 0)
{
GlobalLogger.streams = (FILE**) malloc(sizeof(FILE*));
GlobalLogger.stream_count = 1;
if (GlobalLogger.streams == NULL)
{
PANIC("failed to allocate stream buffer");
}
}
else
{
GlobalLogger.stream_count++;
size_t bytes = GlobalLogger.stream_count * sizeof(FILE*);
GlobalLogger.streams = (FILE**) realloc(GlobalLogger.streams, bytes);
if (GlobalLogger.streams == NULL)
{
PANIC("failed to reallocate stream buffer");
}
}
GlobalLogger.streams[GlobalLogger.stream_count - 1] = stream;
}
static void vflogf(
FILE* restrict stream,
const char* restrict level,
const char* restrict file,
const unsigned long line,
const char* restrict func,
const char* restrict format,
va_list args)
{
fprintf(stream, "%s in %s() at %s:%lu: ", level, func, file, line);
vfprintf(stream, format, args);
}
void __logf(
const char* restrict level,
const char* restrict file,
const unsigned long line,
const char* restrict func,
const char* restrict format,
...)
{
va_list args;
va_start(args, format);
for (size_t i = 0; i < GlobalLogger.stream_count; i++)
{
FILE* stream = GlobalLogger.streams[i];
vflogf(stream, level, file, line, func, format, args);
}
va_end(args);
}
void __panicf(
const char* restrict file,
const unsigned long line,
const char* restrict func,
const char* restrict format,
...)
{
va_list args;
va_start(args, format);
vflogf(stderr, LOG_STRING_PANIC, file, line, func, format, args);
va_end(args);
exit(EXIT_FAILURE);
}
void __fatalf(
const char* restrict file,
const unsigned long line,
const char* restrict func,
const char* restrict format,
...)
{
va_list args;
va_start(args, format);
vflogf(stderr, LOG_STRING_FATAL, file, line, func, format, args);
va_end(args);
abort();
}

81
src/sys/log.h Normal file
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#ifndef _SYS_ERR_H_
#define _SYS_ERR_H_
#include <stdio.h>
#include <sys/cdefs.h>
#define LOG_DEFAULT_STREAM stderr
#define LOG_LEVEL_ERROR 3
#define LOG_LEVEL_WARNING 2
#define LOG_LEVEL_INFORMATION 1
#define LOG_LEVEL_DEBUG 0
#define LOG_LEVEL LOG_LEVEL_DEBUG
#define LOG_MAX_BACKTRACE_FRAMES 64
#define LOG_STRING_PANIC "Critical"
#define LOG_STRING_FATAL "Fatal"
#define LOG_STRING_ERROR "Error"
#define LOG_STRING_WARNING "Warning"
#define LOG_STRING_INFORMATION "Information"
#define LOG_STRING_DEBUG "Debug"
/**
* @brief Panic is used in cases where the process is in an unrecoverable state.
* This macro will print debug information to stderr and call abort() to
* performa a ungracefull exit. No clean up possible.
*/
#define PANIC(format, ...) __panicf(__FILE_NAME__, __LINE__, __func__, format"\n", ##__VA_ARGS__)
/**
* @brief Panic is used in cases where the process is in an invalid or undefined state.
* This macro will print debug information to stderr and call exit() to
* initiate a gracefull exit, giving the process the opportunity to clean up.
*/
#define FATAL(format, ...) __fatalf(__FILE_NAME__, __LINE__, __func__, format"\n", ##__VA_ARGS__)
/*
Standard log macros. These will not terminate the application.
Can be turned off by setting LOG_LEVEL. All logs which have smaller log numbers
will not print.
*/
#define ERROR(format, ...) __LOG(LOG_STRING_ERROR, LOG_LEVEL_ERROR, format"\n", ##__VA_ARGS__)
#define WARN(format, ...) __LOG(LOG_STRING_WARNING, LOG_LEVEL_WARNING, format"\n", ##__VA_ARGS__)
#define INFO(format, ...) __LOG(LOG_STRING_INFORMATION, LOG_LEVEL_INFORMATION, format"\n", ##__VA_ARGS__)
#define DEBUG(format, ...) __LOG(LOG_STRING_DEBUG, LOG_LEVEL_DEBUG, format"\n", ##__VA_ARGS__)
#define __LOG(level, priority, format, ...) \
do { \
if (LOG_LEVEL <= priority) \
__logf(level, __FILE_NAME__, __LINE__, __func__, format, ##__VA_ARGS__); \
} while(0)
void __logf(
const char* restrict level,
const char* restrict file,
const unsigned long line,
const char* restrict func,
const char* restrict format,
...);
void __panicf(
const char* restrict file,
const unsigned long line,
const char* restrict func,
const char* restrict format,
...);
void __fatalf(
const char* restrict file,
const unsigned long line,
const char* restrict func,
const char* restrict format,
...);
void log_init(void);
void log_register_stream(FILE* restrict stream);
#endif /* _SYS_ERR_H_ */