3 * - By John Hodge (thePowersGang)
5 * logging.c - Kernel Logging Service
10 #define CACHE_MESSAGES 0
11 #define PRINT_ON_APPEND 1
12 #define USE_RING_BUFFER 1
13 #define RING_BUFFER_SIZE 4096
28 const char *csaLevelColours[] = {
29 "\x1B[35m", "\x1B[34m", "\x1B[36m", "\x1B[31m",
30 "\x1B[33m", "\x1B[32m", "\x1B[0m", "\x1B[0m"
32 const char *csaLevelCodes[] = {"k","p","f","e","w","n","l","d"};
35 typedef struct sLogEntry
37 struct sLogEntry *Next;
38 struct sLogEntry *LevelNext;
45 typedef struct sLogList
52 void Log_AddEvent(const char *Ident, int Level, const char *Format, va_list Args);
53 static void Log_Int_PrintMessage(tLogEntry *Entry);
54 //void Log_KernelPanic(const char *Ident, const char *Message, ...);
55 //void Log_Panic(const char *Ident, const char *Message, ...);
56 //void Log_Error(const char *Ident, const char *Message, ...);
57 //void Log_Warning(const char *Ident, const char *Message, ...);
58 //void Log_Notice(const char *Ident, const char *Message, ...);
59 //void Log_Log(const char *Ident, const char *Message, ...);
60 //void Log_Debug(const char *Ident, const char *Message, ...);
71 tShortSpinlock glLogOutput;
73 Uint8 gaLog_RingBufferData[sizeof(tRingBuffer)+RING_BUFFER_SIZE];
74 tRingBuffer *gpLog_RingBuffer = (void*)gaLog_RingBufferData;
78 tLogList gLog_Levels[NUM_LOG_LEVELS];
83 * \brief Adds an event to the log
85 void Log_AddEvent(const char *Ident, int Level, const char *Format, va_list Args)
91 if( Level >= NUM_LOG_LEVELS ) return;
93 va_copy(args_tmp, Args);
94 len = vsnprintf(NULL, 256, Format, args_tmp);
96 //Log("len = %i", len);
98 #if USE_RING_BUFFER || !CACHE_MESSAGES
100 char buf[sizeof(tLogEntry)+len+1];
103 ent = malloc(sizeof(tLogEntry)+len+1);
106 strncpy(ent->Ident, Ident, 8);
107 ent->Ident[8] = '\0';
110 vsnprintf( ent->Data, len+1, Format, Args );
115 #define LOG_HDR_LEN (14+1+2+8+2)
116 char newData[ LOG_HDR_LEN + len + 2 + 1 ];
118 strncpy(_ident, Ident, 9);
119 sprintf( newData, "%014lli%s [%-8s] ",
120 ent->Time, csaLevelCodes[Level], Ident);
121 strcpy( newData + LOG_HDR_LEN, ent->Data );
122 strcpy( newData + LOG_HDR_LEN + len, "\r\n" );
123 gpLog_RingBuffer->Space = RING_BUFFER_SIZE; // Needed to init the buffer
124 RingBuffer_Write( gpLog_RingBuffer, newData, LOG_HDR_LEN + len + 2 );
127 Mutex_Acquire( &glLog );
129 ent->Next = gLog.Tail;
133 gLog.Tail = gLog.Head = ent;
135 ent->LevelNext = gLog_Levels[Level].Tail;
136 if(gLog_Levels[Level].Head)
137 gLog_Levels[Level].Tail = ent;
139 gLog_Levels[Level].Tail = gLog_Levels[Level].Head = ent;
141 Mutex_Release( &glLog );
145 #if PRINT_ON_APPEND || !CACHE_MESSAGES
146 Log_Int_PrintMessage( ent );
149 #if USE_RING_BUFFER || !CACHE_MESSAGES
155 * \brief Prints a log message to the debug console
157 void Log_Int_PrintMessage(tLogEntry *Entry)
159 SHORTLOCK( &glLogOutput );
160 LogF("%s%014lli%s [%-8s] %i - %s",
161 csaLevelColours[Entry->Level],
163 csaLevelCodes[Entry->Level],
168 LogF("\x1B[0m\r\n"); // Separate in case Entry->Data is too long
169 SHORTREL( &glLogOutput );
173 * \brief KERNEL PANIC!!!!
175 void Log_KernelPanic(const char *Ident, const char *Message, ...)
178 va_start(args, Message);
179 Log_AddEvent(Ident, LOG_LEVEL_KPANIC, Message, args);
181 Panic("Log_KernelPanic - %s", Ident);
185 * \brief Panic Message - Driver Unrecoverable error
187 void Log_Panic(const char *Ident, const char *Message, ...)
190 va_start(args, Message);
191 Log_AddEvent(Ident, LOG_LEVEL_PANIC, Message, args);
196 * \brief Error Message - Recoverable Error
198 void Log_Error(const char *Ident, const char *Message, ...)
201 va_start(args, Message);
202 Log_AddEvent(Ident, LOG_LEVEL_ERROR, Message, args);
207 * \brief Warning Message - Something the user should know
209 void Log_Warning(const char *Ident, const char *Message, ...)
213 va_start(args, Message);
214 Log_AddEvent(Ident, LOG_LEVEL_WARNING, Message, args);
219 * \brief Notice Message - Something the user might like to know
221 void Log_Notice(const char *Ident, const char *Message, ...)
224 va_start(args, Message);
225 Log_AddEvent(Ident, LOG_LEVEL_NOTICE, Message, args);
230 * \brief Log Message - Possibly useful information
232 void Log_Log(const char *Ident, const char *Message, ...)
235 va_start(args, Message);
236 Log_AddEvent(Ident, LOG_LEVEL_LOG, Message, args);
241 * \brief Debug Message - Only a developer would want this info
243 void Log_Debug(const char *Ident, const char *Message, ...)
246 va_start(args, Message);
247 Log_AddEvent(Ident, LOG_LEVEL_DEBUG, Message, args);