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Annotation of sbbs/javascript/include/mozilla/nspr/prlog.h, revision 1.1

1.1     ! root        1: /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
        !             2: /* 
        !             3:  * The contents of this file are subject to the Mozilla Public
        !             4:  * License Version 1.1 (the "License"); you may not use this file
        !             5:  * except in compliance with the License. You may obtain a copy of
        !             6:  * the License at http://www.mozilla.org/MPL/
        !             7:  * 
        !             8:  * Software distributed under the License is distributed on an "AS
        !             9:  * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
        !            10:  * implied. See the License for the specific language governing
        !            11:  * rights and limitations under the License.
        !            12:  * 
        !            13:  * The Original Code is the Netscape Portable Runtime (NSPR).
        !            14:  * 
        !            15:  * The Initial Developer of the Original Code is Netscape
        !            16:  * Communications Corporation.  Portions created by Netscape are 
        !            17:  * Copyright (C) 1998-2000 Netscape Communications Corporation.  All
        !            18:  * Rights Reserved.
        !            19:  * 
        !            20:  * Contributor(s):
        !            21:  * 
        !            22:  * Alternatively, the contents of this file may be used under the
        !            23:  * terms of the GNU General Public License Version 2 or later (the
        !            24:  * "GPL"), in which case the provisions of the GPL are applicable 
        !            25:  * instead of those above.  If you wish to allow use of your 
        !            26:  * version of this file only under the terms of the GPL and not to
        !            27:  * allow others to use your version of this file under the MPL,
        !            28:  * indicate your decision by deleting the provisions above and
        !            29:  * replace them with the notice and other provisions required by
        !            30:  * the GPL.  If you do not delete the provisions above, a recipient
        !            31:  * may use your version of this file under either the MPL or the
        !            32:  * GPL.
        !            33:  */
        !            34: 
        !            35: #ifndef prlog_h___
        !            36: #define prlog_h___
        !            37: 
        !            38: #include "prtypes.h"
        !            39: 
        !            40: PR_BEGIN_EXTERN_C
        !            41: 
        !            42: /*
        !            43: ** prlog.h -- Declare interfaces to NSPR's Logging service
        !            44: **
        !            45: ** NSPR provides a logging service that is used by NSPR itself and is
        !            46: ** available to client programs.
        !            47: **
        !            48: ** To use the service from a client program, you should create a
        !            49: ** PRLogModuleInfo structure by calling PR_NewLogModule(). After
        !            50: ** creating the LogModule, you can write to the log using the PR_LOG()
        !            51: ** macro.
        !            52: **
        !            53: ** Initialization of the log service is handled by NSPR initialization.
        !            54: **
        !            55: ** At execution time, you must enable the log service. To enable the
        !            56: ** log service, set the environment variable: NSPR_LOG_MODULES
        !            57: ** variable.
        !            58: **
        !            59: ** NSPR_LOG_MODULES variable has the form:
        !            60: **
        !            61: **     <moduleName>:<value>[, <moduleName>:<value>]*
        !            62: **
        !            63: ** Where:
        !            64: **  <moduleName> is the name passed to PR_NewLogModule().
        !            65: **  <value> is a numeric constant, e.g. 5. This value is the maximum
        !            66: ** value of a log event, enumerated by PRLogModuleLevel, that you want
        !            67: ** written to the log.
        !            68: ** 
        !            69: ** For example: to record all events of greater value than or equal to
        !            70: ** PR_LOG_ERROR for a LogModule names "gizmo", say:
        !            71: ** 
        !            72: ** set NSPR_LOG_MODULES=gizmo:2
        !            73: ** 
        !            74: ** Note that you must specify the numeric value of PR_LOG_ERROR.
        !            75: ** 
        !            76: ** Special LogModule names are provided for controlling NSPR's log
        !            77: ** service at execution time. These controls should be set in the
        !            78: ** NSPR_LOG_MODULES environment variable at execution time to affect
        !            79: ** NSPR's log service for your application.
        !            80: ** 
        !            81: ** The special LogModule "all" enables all LogModules. To enable all
        !            82: ** LogModule calls to PR_LOG(), say:
        !            83: ** 
        !            84: ** set NSPR_LOG_MODULES=all:5
        !            85: ** 
        !            86: ** The special LogModule name "sync" tells the NSPR log service to do
        !            87: ** unbuffered logging.
        !            88: ** 
        !            89: ** The special LogModule name "bufsize:<size>" tells NSPR to set the
        !            90: ** log buffer to <size>.
        !            91: **
        !            92: ** The environment variable NSPR_LOG_FILE specifies the log file to use
        !            93: ** unless the default of "stderr" is acceptable. For MS Windows
        !            94: ** systems, NSPR_LOG_FILE can be set to a special value: "WinDebug"
        !            95: ** (case sensitive). This value causes PR_LOG() output to be written
        !            96: ** using the Windows API OutputDebugString(). OutputDebugString()
        !            97: ** writes to the debugger window; some people find this helpful.
        !            98: ** 
        !            99: **
        !           100: ** To put log messages in your programs, use the PR_LOG macro:
        !           101: **
        !           102: **     PR_LOG(<module>, <level>, (<printfString>, <args>*));
        !           103: **
        !           104: ** Where <module> is the address of a PRLogModuleInfo structure, and
        !           105: ** <level> is one of the levels defined by the enumeration:
        !           106: ** PRLogModuleLevel. <args> is a printf() style of argument list. That
        !           107: ** is: (fmtstring, ...).
        !           108: **
        !           109: ** Example:
        !           110: ** 
        !           111: ** main() {
        !           112: **    PRIntn one = 1;
        !           113: **    PRLogModuleInfo * myLm = PR_NewLogModule("gizmo");
        !           114: **    PR_LOG( myLm, PR_LOG_ALWAYS, ("Log this! %d\n", one)); 
        !           115: **    return; 
        !           116: ** }
        !           117: ** 
        !           118: ** Note the use of printf() style arguments as the third agrument(s) to
        !           119: ** PR_LOG().
        !           120: ** 
        !           121: ** After compiling and linking you application, set the environment:
        !           122: ** 
        !           123: ** set NSPR_LOG_MODULES=gizmo:5
        !           124: ** set NSPR_LOG_FILE=logfile.txt
        !           125: ** 
        !           126: ** When you execute your application, the string "Log this! 1" will be
        !           127: ** written to the file "logfile.txt".
        !           128: ** 
        !           129: ** Note to NSPR engineers: a number of PRLogModuleInfo structures are
        !           130: ** defined and initialized in prinit.c. See this module for ideas on
        !           131: ** what to log where.
        !           132: ** 
        !           133: */
        !           134: 
        !           135: typedef enum PRLogModuleLevel {
        !           136:     PR_LOG_NONE = 0,                /* nothing */
        !           137:     PR_LOG_ALWAYS = 1,              /* always printed */
        !           138:     PR_LOG_ERROR = 2,               /* error messages */
        !           139:     PR_LOG_WARNING = 3,             /* warning messages */
        !           140:     PR_LOG_DEBUG = 4,               /* debug messages */
        !           141: 
        !           142:     PR_LOG_NOTICE = PR_LOG_DEBUG,   /* notice messages */
        !           143:     PR_LOG_WARN = PR_LOG_WARNING,   /* warning messages */
        !           144:     PR_LOG_MIN = PR_LOG_DEBUG,      /* minimal debugging messages */
        !           145:     PR_LOG_MAX = PR_LOG_DEBUG       /* maximal debugging messages */
        !           146: } PRLogModuleLevel;
        !           147: 
        !           148: /*
        !           149: ** One of these structures is created for each module that uses logging.
        !           150: **    "name" is the name of the module
        !           151: **    "level" is the debugging level selected for that module
        !           152: */
        !           153: typedef struct PRLogModuleInfo {
        !           154:     const char *name;
        !           155:     PRLogModuleLevel level;
        !           156:     struct PRLogModuleInfo *next;
        !           157: } PRLogModuleInfo;
        !           158: 
        !           159: /*
        !           160: ** Create a new log module.
        !           161: */
        !           162: NSPR_API(PRLogModuleInfo*) PR_NewLogModule(const char *name);
        !           163: 
        !           164: /*
        !           165: ** Set the file to use for logging. Returns PR_FALSE if the file cannot
        !           166: ** be created
        !           167: */
        !           168: NSPR_API(PRBool) PR_SetLogFile(const char *name);
        !           169: 
        !           170: /*
        !           171: ** Set the size of the logging buffer. If "buffer_size" is zero then the
        !           172: ** logging becomes "synchronous" (or unbuffered).
        !           173: */
        !           174: NSPR_API(void) PR_SetLogBuffering(PRIntn buffer_size);
        !           175: 
        !           176: /*
        !           177: ** Print a string to the log. "fmt" is a PR_snprintf format type. All
        !           178: ** messages printed to the log are preceeded by the name of the thread
        !           179: ** and a time stamp. Also, the routine provides a missing newline if one
        !           180: ** is not provided.
        !           181: */
        !           182: NSPR_API(void) PR_LogPrint(const char *fmt, ...);
        !           183: 
        !           184: /*
        !           185: ** Flush the log to its file.
        !           186: */
        !           187: NSPR_API(void) PR_LogFlush(void);
        !           188: 
        !           189: /*
        !           190: ** Windoze 16 can't support a large static string space for all of the
        !           191: ** various debugging strings so logging is not enabled for it.
        !           192: */
        !           193: #if (defined(DEBUG) || defined(FORCE_PR_LOG)) && !defined(WIN16)
        !           194: #define PR_LOGGING 1
        !           195: 
        !           196: #define PR_LOG_TEST(_module,_level) \
        !           197:     ((_module)->level >= (_level))
        !           198: 
        !           199: /*
        !           200: ** Log something.
        !           201: **    "module" is the address of a PRLogModuleInfo structure
        !           202: **    "level" is the desired logging level
        !           203: **    "args" is a variable length list of arguments to print, in the following
        !           204: **       format:  ("printf style format string", ...)
        !           205: */
        !           206: #define PR_LOG(_module,_level,_args)     \
        !           207:     PR_BEGIN_MACRO             \
        !           208:       if (PR_LOG_TEST(_module,_level)) { \
        !           209:       PR_LogPrint _args;         \
        !           210:       }                     \
        !           211:     PR_END_MACRO
        !           212: 
        !           213: #else /* (defined(DEBUG) || defined(FORCE_PR_LOG)) && !defined(WIN16) */
        !           214: 
        !           215: #undef PR_LOGGING
        !           216: #define PR_LOG_TEST(module,level) 0
        !           217: #define PR_LOG(module,level,args)
        !           218: 
        !           219: #endif /* (defined(DEBUG) || defined(FORCE_PR_LOG)) && !defined(WIN16) */
        !           220: 
        !           221: #ifndef NO_NSPR_10_SUPPORT
        !           222: 
        !           223: #ifdef PR_LOGGING
        !           224: #define PR_LOG_BEGIN    PR_LOG
        !           225: #define PR_LOG_END      PR_LOG
        !           226: #define PR_LOG_DEFINE   PR_NewLogModule
        !           227: #else
        !           228: #define PR_LOG_BEGIN(module,level,args)
        !           229: #define PR_LOG_END(module,level,args)
        !           230: #define PR_LOG_DEFINE(_name)    NULL
        !           231: #endif /* PR_LOGGING */
        !           232: 
        !           233: #endif /* NO_NSPR_10_SUPPORT */
        !           234: 
        !           235: #if defined(DEBUG) || defined(FORCE_PR_ASSERT)
        !           236: 
        !           237: NSPR_API(void) PR_Assert(const char *s, const char *file, PRIntn ln);
        !           238: #define PR_ASSERT(_expr) \
        !           239:     ((_expr)?((void)0):PR_Assert(# _expr,__FILE__,__LINE__))
        !           240: 
        !           241: #define PR_NOT_REACHED(_reasonStr) \
        !           242:     PR_Assert(_reasonStr,__FILE__,__LINE__)
        !           243: 
        !           244: #else
        !           245: 
        !           246: #define PR_ASSERT(expr) ((void) 0)
        !           247: #define PR_NOT_REACHED(reasonStr)
        !           248: 
        !           249: #endif /* defined(DEBUG) || defined(FORCE_PR_ASSERT) */
        !           250: 
        !           251: PR_END_EXTERN_C
        !           252: 
        !           253: #endif /* prlog_h___ */

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