00001 #ifndef __SYS_LOGGER_H__ 00002 #define __SYS_LOGGER_H__ 00003 /******************************************************************************/ 00004 /* */ 00005 /* X r d S y s L o g g e r . h h */ 00006 /* */ 00007 /*(c) 2004 by the Board of Trustees of the Leland Stanford, Jr., University */ 00008 /*Produced by Andrew Hanushevsky for Stanford University under contract */ 00009 /* DE-AC02-76-SFO0515 with the Deprtment of Energy */ 00010 /* */ 00011 /* This file is part of the XRootD software suite. */ 00012 /* */ 00013 /* XRootD is free software: you can redistribute it and/or modify it under */ 00014 /* the terms of the GNU Lesser General Public License as published by the */ 00015 /* Free Software Foundation, either version 3 of the License, or (at your */ 00016 /* option) any later version. */ 00017 /* */ 00018 /* XRootD is distributed in the hope that it will be useful, but WITHOUT */ 00019 /* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */ 00020 /* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public */ 00021 /* License for more details. */ 00022 /* */ 00023 /* You should have received a copy of the GNU Lesser General Public License */ 00024 /* along with XRootD in a file called COPYING.LESSER (LGPL license) and file */ 00025 /* COPYING (GPL license). If not, see <http://www.gnu.org/licenses/>. */ 00026 /* */ 00027 /* The copyright holder's institutional names and contributor's names may not */ 00028 /* be used to endorse or promote products derived from this software without */ 00029 /* specific prior written permission of the institution or contributor. */ 00030 /******************************************************************************/ 00031 00032 #include <stdlib.h> 00033 #ifndef WIN32 00034 #include <unistd.h> 00035 #include <string.h> 00036 #include <strings.h> 00037 #else 00038 #include <string.h> 00039 #include <io.h> 00040 #include "XrdSys/XrdWin32.hh" 00041 #endif 00042 00043 #include "XrdSys/XrdSysPthread.hh" 00044 00045 class XrdSysLogger 00046 { 00047 public: 00048 XrdSysLogger(int ErrFD=STDERR_FILENO, int xrotate=1); 00049 00050 ~XrdSysLogger() {if (ePath) free(ePath);} 00051 00052 // Bind allows you to bind standard error to a file with an optional periodic 00053 // closing and opening of the file. 00054 // 00055 int Bind(const char *path, int intsec=0); 00056 00057 // Flush any pending output 00058 // 00059 void Flush() {fsync(eFD);} 00060 00061 // originalFD() returns the base FD that we started with 00062 // 00063 int originalFD() {return baseFD;} 00064 00065 // Output data and optionally prefix with date/time 00066 // 00067 void Put(int iovcnt, struct iovec *iov); 00068 00069 // Set log file keep value. A negative number means keep abs() files. 00070 // A positive number means keep no more than n bytes. 00071 // 00072 void setKeep(long long knum) {eKeep = knum;} 00073 00074 // Set log file rotation on/off. Used by forked processes. 00075 // 00076 void setRotate(int onoff) {doLFR = onoff;} 00077 00078 // Return formated date/time (tbuff must be atleast 24 characters) 00079 // 00080 int Time(char *tbuff); 00081 00082 // traceBeg() obtains the logger lock and returns a message header. 00083 // traceEnd() releases the logger lock and returns a newline 00084 // 00085 char *traceBeg() {Logger_Mutex.Lock(); Time(TBuff); return TBuff;} 00086 char traceEnd() {Logger_Mutex.UnLock(); return '\n';} 00087 00088 // xlogFD() returns the FD to be used by external programs as their STDERR. 00089 // A negative one indicates that no special FD is assigned. 00090 // 00091 int xlogFD(); 00092 00093 private: 00094 00095 XrdSysMutex Logger_Mutex; 00096 static int extLFD[4]; 00097 long long eKeep; 00098 char TBuff[24]; // Trace header buffer 00099 int eFD; 00100 int baseFD; 00101 char *ePath; 00102 char Filesfx[8]; 00103 time_t eNTC; 00104 int eInt; 00105 time_t eNow; 00106 int doLFR; 00107 00108 void putEmsg(char *msg, int msz); 00109 int ReBind(int dorename=1); 00110 void Trim(); 00111 }; 00112 #endif