117 lines
2.5 KiB
C
117 lines
2.5 KiB
C
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/log.h>
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#include <assert.h>
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static struct Logger_t {
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FILE** streams;
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size_t stream_count;
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} GlobalLogger;
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void log_init(void)
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{
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assert(LOG_DEFAULT_STREAM != NULL);
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log_register_stream(LOG_DEFAULT_STREAM);
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}
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void log_register_stream(FILE* restrict stream)
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{
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// replace runtime check with assertion
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// only to be used in debug target
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assert(stream != NULL);
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if (GlobalLogger.stream_count == 0)
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{
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GlobalLogger.streams = (FILE**) malloc(sizeof(FILE*));
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GlobalLogger.stream_count = 1;
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if (GlobalLogger.streams == NULL)
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{
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PANIC("failed to allocate stream buffer");
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}
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}
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else
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{
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GlobalLogger.stream_count++;
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size_t bytes = GlobalLogger.stream_count * sizeof(FILE*);
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GlobalLogger.streams = (FILE**) realloc(GlobalLogger.streams, bytes);
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if (GlobalLogger.streams == NULL)
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{
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PANIC("failed to reallocate stream buffer");
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}
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}
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GlobalLogger.streams[GlobalLogger.stream_count - 1] = stream;
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}
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static void vflogf(
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FILE* restrict stream,
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const char* restrict level,
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const char* restrict file,
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const unsigned long line,
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const char* restrict func,
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const char* restrict format,
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va_list args)
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{
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fprintf(stream, "%s in %s() at %s:%lu: ", level, func, file, line);
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vfprintf(stream, format, args);
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}
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void syslog_logf(
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const char* restrict level,
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const char* restrict file,
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const unsigned long line,
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const char* restrict func,
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const char* restrict format,
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...)
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{
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va_list args;
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va_start(args, format);
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for (size_t i = 0; i < GlobalLogger.stream_count; i++)
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{
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FILE* stream = GlobalLogger.streams[i];
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vflogf(stream, level, file, line, func, format, args);
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}
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va_end(args);
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}
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void syslog_panicf(
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const char* restrict file,
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const unsigned long line,
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const char* restrict func,
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const char* restrict format,
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...)
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{
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va_list args;
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va_start(args, format);
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vflogf(stderr, LOG_STRING_PANIC, file, line, func, format, args);
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va_end(args);
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exit(EXIT_FAILURE);
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}
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void syslog_fatalf(
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const char* restrict file,
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const unsigned long line,
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const char* restrict func,
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const char* restrict format,
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...)
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{
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va_list args;
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va_start(args, format);
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vflogf(stderr, LOG_STRING_FATAL, file, line, func, format, args);
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va_end(args);
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abort();
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}
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