online_distribution/newbasic/msg_buffer.h

0001
0002 #ifndef __MSG_BUFFER_H__
0003 #define __MSG_BUFFER_H__
0004
0005
0006 #include "event_io.h"
0007
0008 #ifdef __CINT__
0009 #include <iostream>
0010 #endif
0011
0012
0013 #ifndef __CINT__
0014
0015 #include <cstdio>
0016 #include <cstdarg>
0017 #include <string>
0018 #include <ctime>
0019 #include <time.h>
0020
0021 #endif
0022
0023
0024 #include "msg_control.h"
0025
0026 // if we find that our buffer is too small, we extend it
0027 // by this amount.
0028 #define MSG_EXTENSION_AMOUNT 32
0029
0030
0031 typedef struct msgProfile {
0032   int type;
0033   int source;
0034   int severity;
0035   int reserved1;
0036   int reserved2;
0037   int reserved3;
0038   char sourcecomponent[256];
0039 } msgProfile;
0040
0041
0042
0043 //class msg_control;
0044
0045
0046 /**
0047 This is the base class for the type of message buffers which we want to
0048 use for messaging. It can easily be subclassed.
0049
0050
0051 This base class defines the "static" behavior of all the msg\_buffer
0052 classes derived from it. It provides the parsing routine which decodes
0053 the profile tags, provides a "add\_date" routine to conveniently
0054 prepend a date tag to each message if so desired, and deals with the
0055 msg\_control objects in the system which it is a friend of. If created,
0056 the msg\_buffer object tells all msg\_control object to go active and produce
0057 the profiling information; otherwise they maintain silence.
0058
0059 This class is meant to be subclassed, and the dispatch mechanism which
0060 you want has to be provided by the subclass.
0061
0062 */
0063
0064 #ifdef __CINT__
0065 class msg_buffer : public streambuf {
0066 #else
0067 class msg_buffer : public STREAMBUF {
0068 #endif
0069
0070 protected:
0071   char *oBuffer;
0072   int pos;
0073   int maximum_position;
0074   msg_control *m;
0075
0076   virtual char * format(int * length, msgProfile *mp);
0077
0078
0079
0080   public:
0081     msg_buffer (const int msglen=256);
0082     virtual ~msg_buffer();
0083
0084     virtual int overflow (int ch);
0085     virtual int sync ();
0086 };
0087
0088 #ifndef __CINT__
0089 void streambuf_add_date (STREAMBUF * sb);
0090 #endif
0091
0092
0093 #endif /* __MSG_BUFFER_H__ */