3 * - By John Hodge (thePowersGang)
5 * logging.c - Kernel Logging Service
9 #define PRINT_ON_APPEND 1
10 #define USE_RING_BUFFER 1
11 #define RING_BUFFER_SIZE 4096
26 const char *csaLevelColours[] = {
27 "\x1B[35m", "\x1B[34m", "\x1B[36m", "\x1B[31m",
28 "\x1B[33m", "\x1B[32m", "\x1B[0m", "\x1B[0m"
30 const char *csaLevelCodes[] = {"k","p","f","e","w","n","l","d"};
33 typedef struct sLogEntry
35 struct sLogEntry *Next;
36 struct sLogEntry *LevelNext;
43 typedef struct sLogList
50 void Log_AddEvent(char *Ident, int Level, char *Format, va_list Args);
51 static void Log_Int_PrintMessage(tLogEntry *Entry);
52 void Log_KernelPanic(char *Ident, char *Message, ...);
53 void Log_Panic(char *Ident, char *Message, ...);
54 void Log_Error(char *Ident, char *Message, ...);
55 void Log_Warning(char *Ident, char *Message, ...);
56 void Log_Notice(char *Ident, char *Message, ...);
57 void Log_Log(char *Ident, char *Message, ...);
58 void Log_Debug(char *Ident, char *Message, ...);
69 tShortSpinlock glLogOutput;
71 Uint8 gaLog_RingBufferData[sizeof(tRingBuffer)+RING_BUFFER_SIZE];
72 tRingBuffer *gpLog_RingBuffer = (void*)gaLog_RingBufferData;
76 tLogList gLog_Levels[NUM_LOG_LEVELS];
81 * \brief Adds an event to the log
83 void Log_AddEvent(char *Ident, int Level, char *Format, va_list Args)
89 if( Level >= NUM_LOG_LEVELS ) return;
91 va_copy(args_tmp, Args);
92 len = vsnprintf(NULL, 256, Format, args_tmp);
94 //Log("len = %i", len);
98 char buf[sizeof(tLogEntry)+len+1];
101 ent = malloc(sizeof(tLogEntry)+len+1);
104 strncpy(ent->Ident, Ident, 8);
107 vsnprintf( ent->Data, len+1, Format, Args );
111 #define LOG_HDR_LEN (14+1+2+8+2)
112 char newData[ LOG_HDR_LEN + len + 2 + 1 ];
113 sprintf( newData, "%014lli%s [%+8s] ",
114 ent->Time, csaLevelCodes[Level], Ident);
115 strcpy( newData + LOG_HDR_LEN, ent->Data );
116 strcpy( newData + LOG_HDR_LEN + len, "\r\n" );
117 gpLog_RingBuffer->Space = RING_BUFFER_SIZE; // Needed to init the buffer
118 RingBuffer_Write( gpLog_RingBuffer, newData, LOG_HDR_LEN + len + 2 );
121 Mutex_Acquire( &glLog );
123 ent->Next = gLog.Tail;
127 gLog.Tail = gLog.Head = ent;
129 ent->LevelNext = gLog_Levels[Level].Tail;
130 if(gLog_Levels[Level].Head)
131 gLog_Levels[Level].Tail = ent;
133 gLog_Levels[Level].Tail = gLog_Levels[Level].Head = ent;
135 Mutex_Release( &glLog );
139 Log_Int_PrintMessage( ent );
148 * \brief Prints a log message to the debug console
150 void Log_Int_PrintMessage(tLogEntry *Entry)
152 SHORTLOCK( &glLogOutput );
153 LogF("%s%014lli%s [%+8s] %s\x1B[0m\r\n",
154 csaLevelColours[Entry->Level],
156 csaLevelCodes[Entry->Level],
160 SHORTREL( &glLogOutput );
164 * \brief KERNEL PANIC!!!!
166 void Log_KernelPanic(char *Ident, char *Message, ...)
169 va_start(args, Message);
170 Log_AddEvent(Ident, LOG_LEVEL_KPANIC, Message, args);
175 * \brief Panic Message - Driver Unrecoverable error
177 void Log_Panic(char *Ident, char *Message, ...)
180 va_start(args, Message);
181 Log_AddEvent(Ident, LOG_LEVEL_PANIC, Message, args);
186 * \brief Error Message - Recoverable Error
188 void Log_Error(char *Ident, char *Message, ...)
191 va_start(args, Message);
192 Log_AddEvent(Ident, LOG_LEVEL_ERROR, Message, args);
197 * \brief Warning Message - Something the user should know
199 void Log_Warning(char *Ident, char *Message, ...)
203 va_start(args, Message);
204 Log_AddEvent(Ident, LOG_LEVEL_WARNING, Message, args);
209 * \brief Notice Message - Something the user might like to know
211 void Log_Notice(char *Ident, char *Message, ...)
214 va_start(args, Message);
215 Log_AddEvent(Ident, LOG_LEVEL_NOTICE, Message, args);
220 * \brief Log Message - Possibly useful information
222 void Log_Log(char *Ident, char *Message, ...)
225 va_start(args, Message);
226 Log_AddEvent(Ident, LOG_LEVEL_LOG, Message, args);
231 * \brief Debug Message - Only a developer would want this info
233 void Log_Debug(char *Ident, char *Message, ...)
236 va_start(args, Message);
237 Log_AddEvent(Ident, LOG_LEVEL_DEBUG, Message, args);