X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=Kernel%2Flogging.c;h=17888a712dbd013a0ac62c36f1e9c45338c27e78;hb=9d85201216cb35e1b1e051b1d7cdc38eaa5befa4;hp=54f16cadc4ab76b8dc5274f267b854b23405f975;hpb=587078c9b833b5fa1cae8b445475000706de8441;p=tpg%2Facess2.git

diff --git a/Kernel/logging.c b/Kernel/logging.c
index 54f16cad..17888a71 100644
--- a/Kernel/logging.c
+++ b/Kernel/logging.c
@@ -7,6 +7,8 @@
 #include <acess.h>
 
 #define PRINT_ON_APPEND	1
+#define USE_RING_BUFFER	1
+#define RING_BUFFER_SIZE	4096
 
 // === CONSTANTS ===
 enum eLogLevels
@@ -45,15 +47,15 @@ typedef struct sLogList
 }	tLogList;
 
 // === PROTOTYPES ===
-void	Log_AddEvent(char *Ident, int Level, char *Format, va_list Args);
+void	Log_AddEvent(const char *Ident, int Level, const char *Format, va_list Args);
 static void	Log_Int_PrintMessage(tLogEntry *Entry);
-void	Log_KernelPanic(char *Ident, char *Message, ...);
-void	Log_Panic(char *Ident, char *Message, ...);
-void	Log_Error(char *Ident, char *Message, ...);
-void	Log_Warning(char *Ident, char *Message, ...);
-void	Log_Notice(char *Ident, char *Message, ...);
-void	Log_Log(char *Ident, char *Message, ...);
-void	Log_Debug(char *Ident, char *Message, ...);
+//void	Log_KernelPanic(const char *Ident, const char *Message, ...);
+//void	Log_Panic(const char *Ident, const char *Message, ...);
+//void	Log_Error(const char *Ident, const char *Message, ...);
+//void	Log_Warning(const char *Ident, const char *Message, ...);
+//void	Log_Notice(const char *Ident, const char *Message, ...);
+//void	Log_Log(const char *Ident, const char *Message, ...);
+//void	Log_Debug(const char *Ident, const char *Message, ...);
 
 // === EXPORTS ===
 EXPORT(Log_Panic);
@@ -64,37 +66,62 @@ EXPORT(Log_Log);
 EXPORT(Log_Debug);
 
 // === GLOBALS ===
-tSpinlock	glLog;
-tSpinlock	glLogOutput;
+tShortSpinlock	glLogOutput;
+#if USE_RING_BUFFER
+Uint8	gaLog_RingBufferData[sizeof(tRingBuffer)+RING_BUFFER_SIZE];
+tRingBuffer	*gpLog_RingBuffer = (void*)gaLog_RingBufferData;
+#else
+tMutex	glLog;
 tLogList	gLog;
 tLogList	gLog_Levels[NUM_LOG_LEVELS];
+#endif
 
 // === CODE ===
 /**
  * \brief Adds an event to the log
  */
-void Log_AddEvent(char *Ident, int Level, char *Format, va_list Args)
+void Log_AddEvent(const char *Ident, int Level, const char *Format, va_list Args)
 {
 	 int	len;
 	tLogEntry	*ent;
+	va_list	args_tmp;
 	
 	if( Level >= NUM_LOG_LEVELS )	return;
 	
-	len = vsnprintf(NULL, 256, Format, Args);
+	va_copy(args_tmp, Args);
+	len = vsnprintf(NULL, 256, Format, args_tmp);
 	
 	//Log("len = %i", len);
 	
+	#if USE_RING_BUFFER
+	{
+	char	buf[sizeof(tLogEntry)+len+1];
+	ent = (void*)buf;
+	#else
 	ent = malloc(sizeof(tLogEntry)+len+1);
+	#endif
 	ent->Time = now();
 	strncpy(ent->Ident, Ident, 8);
+	ent->Ident[8] = '\0';
 	ent->Level = Level;
 	ent->Length = len;
-	vsnprintf( ent->Data, 256, Format, Args );
-	
-	//Log("ent->Ident = '%s'", ent->Ident);
-	//Log("ent->Data = '%s'", ent->Data);
+	vsnprintf( ent->Data, len+1, Format, Args );
 	
-	LOCK( &glLog );
+	#if USE_RING_BUFFER
+	{
+		#define LOG_HDR_LEN	(14+1+2+8+2)
+		char	newData[ LOG_HDR_LEN + len + 2 + 1 ];
+		char	_ident[9];
+		strncpy(_ident, Ident, 9);
+		sprintf( newData, "%014lli%s [%+8s] ",
+			ent->Time, csaLevelCodes[Level], Ident);
+		strcpy( newData + LOG_HDR_LEN, ent->Data );
+		strcpy( newData + LOG_HDR_LEN + len, "\r\n" );
+		gpLog_RingBuffer->Space = RING_BUFFER_SIZE;	// Needed to init the buffer
+		RingBuffer_Write( gpLog_RingBuffer, newData, LOG_HDR_LEN + len + 2 );
+	}
+	#else
+	Mutex_Acquire( &glLog );
 	
 	ent->Next = gLog.Tail;
 	if(gLog.Head)
@@ -108,12 +135,16 @@ void Log_AddEvent(char *Ident, int Level, char *Format, va_list Args)
 	else
 		gLog_Levels[Level].Tail = gLog_Levels[Level].Head = ent;
 	
-	RELEASE( &glLog );
+	Mutex_Release( &glLog );
+	#endif
 	
 	#if PRINT_ON_APPEND
 	Log_Int_PrintMessage( ent );
 	#endif
 	
+	#if USE_RING_BUFFER
+	}
+	#endif
 }
 
 /**
@@ -121,19 +152,21 @@ void Log_AddEvent(char *Ident, int Level, char *Format, va_list Args)
  */
 void Log_Int_PrintMessage(tLogEntry *Entry)
 {
-	LogF("%s%018lli%s [%+8s] %s\x1B[0m\n",
+	SHORTLOCK( &glLogOutput );
+	LogF("%s%014lli%s [%+8s] %s\x1B[0m\r\n",
 		csaLevelColours[Entry->Level],
 		Entry->Time,
 		csaLevelCodes[Entry->Level],
 		Entry->Ident,
 		Entry->Data
 		);
+	SHORTREL( &glLogOutput );
 }
 
 /**
  * \brief KERNEL PANIC!!!!
  */
-void Log_KernelPanic(char *Ident, char *Message, ...)
+void Log_KernelPanic(const char *Ident, const char *Message, ...)
 {
 	va_list	args;	
 	va_start(args, Message);
@@ -144,7 +177,7 @@ void Log_KernelPanic(char *Ident, char *Message, ...)
 /**
  * \brief Panic Message - Driver Unrecoverable error
  */
-void Log_Panic(char *Ident, char *Message, ...)
+void Log_Panic(const char *Ident, const char *Message, ...)
 {
 	va_list	args;	
 	va_start(args, Message);
@@ -155,7 +188,7 @@ void Log_Panic(char *Ident, char *Message, ...)
 /**
  * \brief Error Message - Recoverable Error
  */
-void Log_Error(char *Ident, char *Message, ...)
+void Log_Error(const char *Ident, const char *Message, ...)
 {
 	va_list	args;	
 	va_start(args, Message);
@@ -166,7 +199,7 @@ void Log_Error(char *Ident, char *Message, ...)
 /**
  * \brief Warning Message - Something the user should know
  */
-void Log_Warning(char *Ident, char *Message, ...)
+void Log_Warning(const char *Ident, const char *Message, ...)
 {
 	va_list	args;
 	
@@ -178,7 +211,7 @@ void Log_Warning(char *Ident, char *Message, ...)
 /**
  * \brief Notice Message - Something the user might like to know
  */
-void Log_Notice(char *Ident, char *Message, ...)
+void Log_Notice(const char *Ident, const char *Message, ...)
 {
 	va_list	args;	
 	va_start(args, Message);
@@ -189,7 +222,7 @@ void Log_Notice(char *Ident, char *Message, ...)
 /**
  * \brief Log Message - Possibly useful information
  */
-void Log_Log(char *Ident, char *Message, ...)
+void Log_Log(const char *Ident, const char *Message, ...)
 {
 	va_list	args;	
 	va_start(args, Message);
@@ -200,7 +233,7 @@ void Log_Log(char *Ident, char *Message, ...)
 /**
  * \brief Debug Message - Only a developer would want this info
  */
-void Log_Debug(char *Ident, char *Message, ...)
+void Log_Debug(const char *Ident, const char *Message, ...)
 {
 	va_list	args;	
 	va_start(args, Message);