logger update

[vg.git] / vg_log.c

diff --git a/vg_log.c b/vg_log.c
new file mode 100644 (file)
index 0000000..638d63f
--- /dev/null
+++ b/vg_log.c
@@ -0,0 +1,136 @@
+#ifndef VG_LOG_C
+#include <stdarg.h>
+#include <string.h>
+#include <malloc.h>
+#include "vg_stdint.h"
+#include "vg_platform.h"
+#include "vg_log.h"
+
+#ifndef _WIN32
+ #include <execinfo.h>
+#endif
+
+static void _vg_log_append_line( const char *str ){
+   if( vg_log.log_line_count < vg_list_size( vg_log.log ) )
+      vg_log.log_line_count ++;
+
+   char *dest = vg_log.log[ vg_log.log_line_current ++ ];
+   vg_strncpy( str, dest, vg_list_size(vg_log.log[0]), k_strncpy_allow_cutoff );
+   
+   if( vg_log.log_line_current >= vg_list_size( vg_log.log ) )
+      vg_log.log_line_current = 0;
+}
+
+static void _vg_logx_va( FILE *file, 
+                         const char *location, const char *prefix,
+                         const char *colour,
+                         const char *fmt, va_list args )
+{
+
+   /* @model.h:2000     info| dwahjdiawdjaiwdwadwa  djaidjwa\n
+    *                       | djwaidwaj      waodawh a\n
+    *                       | dwajdkiawjdiw 
+    */
+
+#ifdef VG_GAME
+   SDL_AtomicLock( &log_print_sl );
+#endif
+
+       char buffer[4096];
+
+   vsnprintf( buffer, vg_list_size(buffer), fmt, args );
+
+   const char *line = buffer;
+   char logline[96];
+
+   for( u32 i=0; i<vg_list_size(buffer); i++ ){
+      char c = buffer[i];
+
+      if( c == '\0' || c == '\n' ){
+         buffer[i] = '\0';
+
+         const char *line_prefix = "",
+                    *line_location = "";
+
+         if( line == buffer ) {
+            line_prefix = prefix;
+            line_location = location;
+         }
+
+         snprintf( logline, 96, "%s%7s" KNRM "|%s %s", 
+                   colour, line_prefix, colour, line );
+         _vg_log_append_line( logline );
+
+         if( location ){
+#ifdef VG_GAME
+            const char *thread_colours[] = {
+               KGRN, KMAG, KCYN, KYEL, KBLU
+            };
+
+            const char *colour = thread_colours[
+               (vg_thread_purpose() % vg_list_size( thread_colours ))];
+
+            fprintf( file, "%s[%u]"KNRM"%.32s", 
+                     colour, vg_thread_purpose(), line_location );
+#else
+            fprintf( file, KNRM "%.32s", line_location );
+#endif
+         }
+
+         fputs( logline, file );
+         fputc( '\n', file );
+         fputs( KNRM, file );
+
+         if( c == '\0' ) break;
+         if( buffer[i+1] == '\0' ) break;
+         line = buffer+i+1;
+      }
+   }
+
+#ifdef VG_GAME
+   SDL_AtomicUnlock( &log_print_sl );
+#endif
+}
+
+static void vg_logx( FILE *file, 
+                     const char *location, const char *prefix, 
+                     const char *colour,
+                     const char *fmt, ... ){
+
+   va_list args;
+   va_start( args, fmt );
+   _vg_logx_va( file, 
+#ifdef VG_LOG_SOURCE_INFO
+         location, 
+#else
+         NULL,
+#endif
+         prefix, colour, fmt, args );
+   va_end( args );
+}
+
+static void vg_print_backtrace(void){
+#ifndef _WIN32
+
+   void *array[20];
+   char **strings;
+   int size, i;
+
+   size = backtrace( array, 20 );
+   strings = backtrace_symbols( array, size );
+
+   if( strings != NULL ){
+      vg_error( "---------------- gnu backtrace -------------\n" );
+
+      for( int i=0; i<size; i++ )
+         vg_info( "%s\n", strings[i] );
+
+      vg_error( "---------------- gnu backtrace -------------\n" );
+   }
+
+   free( strings );
+
+#endif
+}
+
+#endif /* VG_LOG_C */