1 /*-------------------------------------------------------------------------
4 * POSTGRES error reporting/logging definitions.
7 * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
8 * Portions Copyright (c) 1994, Regents of the University of California
10 * $PostgreSQL: pgsql/src/include/utils/elog.h,v 1.72 2004/07/31 23:04:55 tgl Exp $
12 *-------------------------------------------------------------------------
19 /* Error level codes */
20 #define DEBUG5 10 /* Debugging messages, in categories of
21 * decreasing detail. */
25 #define DEBUG1 14 /* used by GUC debug_* variables */
26 #define LOG 15 /* Server operational messages; sent only
27 * to server log by default. */
28 #define COMMERROR 16 /* Client communication problems; same as
29 * LOG for server reporting, but never
31 #define INFO 17 /* Informative messages that are always
32 * sent to client; is not affected by
33 * client_min_messages */
34 #define NOTICE 18 /* Helpful messages to users about query
35 * operation; sent to client and server
37 #define WARNING 19 /* Warnings. NOTICE is for expected messages
38 * like implicit sequence creation by SERIAL.
39 * WARNING is for unexpected messages.
41 #define ERROR 20 /* user error - abort transaction; return
43 /* Save ERROR value in PGERROR so it can be restored when Win32 includes
44 * modify it. We have to use a constant rather than ERROR because macros
45 * are expanded only when referenced outside macros.
50 #define FATAL 21 /* fatal error - abort process */
51 #define PANIC 22 /* take down the other backends with me */
53 /* #define DEBUG DEBUG1 */ /* Backward compatibility with pre-7.3 */
56 /* macros for representing SQLSTATE strings compactly */
57 #define PGSIXBIT(ch) (((ch) - '0') & 0x3F)
58 #define PGUNSIXBIT(val) (((val) & 0x3F) + '0')
60 #define MAKE_SQLSTATE(ch1,ch2,ch3,ch4,ch5) \
61 (PGSIXBIT(ch1) + (PGSIXBIT(ch2) << 6) + (PGSIXBIT(ch3) << 12) + \
62 (PGSIXBIT(ch4) << 18) + (PGSIXBIT(ch5) << 24))
64 /* These macros depend on the fact that '0' becomes a zero in SIXBIT */
65 #define ERRCODE_TO_CATEGORY(ec) ((ec) & ((1 << 12) - 1))
66 #define ERRCODE_IS_CATEGORY(ec) (((ec) & ~((1 << 12) - 1)) == 0)
68 /* SQLSTATE codes for errors are defined in a separate file */
69 #include "utils/errcodes.h"
72 /* Which __func__ symbol do we have, if any? */
73 #ifdef HAVE_FUNCNAME__FUNC
74 #define PG_FUNCNAME_MACRO __func__
76 #ifdef HAVE_FUNCNAME__FUNCTION
77 #define PG_FUNCNAME_MACRO __FUNCTION__
79 #define PG_FUNCNAME_MACRO NULL
85 * New-style error reporting API: to be used in this way:
87 * (errcode(ERRCODE_UNDEFINED_CURSOR),
88 * errmsg("portal \"%s\" not found", stmt->portalname),
89 * ... other errxxx() fields as needed ...));
91 * The error level is required, and so is a primary error message (errmsg
92 * or errmsg_internal). All else is optional. errcode() defaults to
93 * ERRCODE_INTERNAL_ERROR if elevel is ERROR or more, ERRCODE_WARNING
94 * if elevel is WARNING, or ERRCODE_SUCCESSFUL_COMPLETION if elevel is
98 #define ereport(elevel, rest) \
99 (errstart(elevel, __FILE__, __LINE__, PG_FUNCNAME_MACRO) ? \
100 (errfinish rest) : (void) 0)
102 extern bool errstart(int elevel, const char *filename, int lineno,
103 const char *funcname);
104 extern void errfinish(int dummy,...);
106 extern int errcode(int sqlerrcode);
108 extern int errcode_for_file_access(void);
109 extern int errcode_for_socket_access(void);
112 errmsg(const char *fmt,...)
113 /* This extension allows gcc to check the format string for consistency with
114 the supplied arguments. */
115 __attribute__((format(printf, 1, 2)));
118 errmsg_internal(const char *fmt,...)
119 /* This extension allows gcc to check the format string for consistency with
120 the supplied arguments. */
121 __attribute__((format(printf, 1, 2)));
124 errdetail(const char *fmt,...)
125 /* This extension allows gcc to check the format string for consistency with
126 the supplied arguments. */
127 __attribute__((format(printf, 1, 2)));
130 errhint(const char *fmt,...)
131 /* This extension allows gcc to check the format string for consistency with
132 the supplied arguments. */
133 __attribute__((format(printf, 1, 2)));
136 errcontext(const char *fmt,...)
137 /* This extension allows gcc to check the format string for consistency with
138 the supplied arguments. */
139 __attribute__((format(printf, 1, 2)));
141 extern int errfunction(const char *funcname);
142 extern int errposition(int cursorpos);
144 extern int internalerrposition(int cursorpos);
145 extern int internalerrquery(const char *query);
147 extern int geterrposition(void);
148 extern int getinternalerrposition(void);
152 * Old-style error reporting API: to be used in this way:
153 * elog(ERROR, "portal \"%s\" not found", stmt->portalname);
156 #define elog errstart(ERROR, __FILE__, __LINE__, PG_FUNCNAME_MACRO), elog_finish
159 elog_finish(int elevel, const char *fmt,...)
160 /* This extension allows gcc to check the format string for consistency with
161 the supplied arguments. */
162 __attribute__((format(printf, 2, 3)));
165 /* Support for attaching context information to error reports */
167 typedef struct ErrorContextCallback
169 struct ErrorContextCallback *previous;
170 void (*callback) (void *arg);
172 } ErrorContextCallback;
174 extern DLLIMPORT ErrorContextCallback *error_context_stack;
178 * API for catching ereport(ERROR) exits. Use these macros like so:
182 * ... code that might throw ereport(ERROR) ...
186 * ... error recovery code ...
190 * (The braces are not actually necessary, but are recommended so that
191 * pg_indent will indent the construct nicely.) The error recovery code
192 * can optionally do PG_RE_THROW() to propagate the same error outwards.
194 * Note: while the system will correctly propagate any new ereport(ERROR)
195 * occurring in the recovery section, there is a small limit on the number
196 * of levels this will work for. It's best to keep the error recovery
197 * section simple enough that it can't generate any new errors, at least
198 * not before popping the error stack.
203 sigjmp_buf *save_exception_stack = PG_exception_stack; \
204 ErrorContextCallback *save_context_stack = error_context_stack; \
205 sigjmp_buf local_sigjmp_buf; \
206 if (sigsetjmp(local_sigjmp_buf, 1) == 0) \
208 PG_exception_stack = &local_sigjmp_buf
214 PG_exception_stack = save_exception_stack; \
215 error_context_stack = save_context_stack
217 #define PG_END_TRY() \
219 PG_exception_stack = save_exception_stack; \
220 error_context_stack = save_context_stack; \
223 #define PG_RE_THROW() \
224 siglongjmp(*PG_exception_stack, 1)
226 extern DLLIMPORT sigjmp_buf *PG_exception_stack;
229 /* Stuff that error handlers might want to use */
232 * ErrorData holds the data accumulated during any one ereport() cycle.
233 * Any non-NULL pointers must point to palloc'd data.
234 * (The const pointers are an exception; we assume they point at non-freeable
237 typedef struct ErrorData
239 int elevel; /* error level */
240 bool output_to_server; /* will report to server log? */
241 bool output_to_client; /* will report to client? */
242 bool show_funcname; /* true to force funcname inclusion */
243 const char *filename; /* __FILE__ of ereport() call */
244 int lineno; /* __LINE__ of ereport() call */
245 const char *funcname; /* __func__ of ereport() call */
246 int sqlerrcode; /* encoded ERRSTATE */
247 char *message; /* primary error message */
248 char *detail; /* detail error message */
249 char *hint; /* hint message */
250 char *context; /* context message */
251 int cursorpos; /* cursor index into query string */
252 int internalpos; /* cursor index into internalquery */
253 char *internalquery; /* text of internally-generated query */
254 int saved_errno; /* errno at entry */
257 extern void EmitErrorReport(void);
258 extern ErrorData *CopyErrorData(void);
259 extern void FreeErrorData(ErrorData *edata);
260 extern void FlushErrorState(void);
261 extern void ReThrowError(ErrorData *edata);
264 /* GUC-configurable parameters */
268 PGERROR_TERSE, /* single-line error messages */
269 PGERROR_DEFAULT, /* recommended style */
270 PGERROR_VERBOSE /* all the facts, ma'am */
273 extern PGErrorVerbosity Log_error_verbosity;
274 extern char *Log_line_prefix;
275 extern unsigned int Log_destination;
277 /* Log destination bitmap */
278 #define LOG_DESTINATION_STDERR 1
279 #define LOG_DESTINATION_SYSLOG 2
280 #define LOG_DESTINATION_EVENTLOG 4
282 /* Other exported functions */
283 extern void DebugFileOpen(void);
286 * Write errors to stderr (or by equal means when stderr is
287 * not available). Used before ereport/elog can be used
288 * safely (memory context, GUC load etc)
290 extern void write_stderr(const char *fmt,...)
291 /* This extension allows gcc to check the format string for consistency with
292 the supplied arguments. */
293 __attribute__((format(printf, 1, 2)));