1 /*-------------------------------------------------------------------------
4 * POSTGRES error reporting/logging definitions.
7 * Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
8 * Portions Copyright (c) 1994, Regents of the University of California
10 * $PostgreSQL: pgsql/src/include/utils/elog.h,v 1.89 2007/11/15 21:14:45 momjian 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 to
27 * server log by default. */
28 #define COMMERROR 16 /* Client communication problems; same as LOG
29 * for server reporting, but never sent to
31 #define INFO 17 /* Informative messages that are always sent
32 * 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 log
37 #define WARNING 19 /* Warnings. NOTICE is for expected messages
38 * like implicit sequence creation by SERIAL.
39 * WARNING is for unexpected messages. */
40 #define ERROR 20 /* user error - abort transaction; return to
42 /* Save ERROR value in PGERROR so it can be restored when Win32 includes
43 * modify it. We have to use a constant rather than ERROR because macros
44 * are expanded only when referenced outside macros.
49 #define FATAL 21 /* fatal error - abort process */
50 #define PANIC 22 /* take down the other backends with me */
52 /* #define DEBUG DEBUG1 */ /* Backward compatibility with pre-7.3 */
55 /* macros for representing SQLSTATE strings compactly */
56 #define PGSIXBIT(ch) (((ch) - '0') & 0x3F)
57 #define PGUNSIXBIT(val) (((val) & 0x3F) + '0')
59 #define MAKE_SQLSTATE(ch1,ch2,ch3,ch4,ch5) \
60 (PGSIXBIT(ch1) + (PGSIXBIT(ch2) << 6) + (PGSIXBIT(ch3) << 12) + \
61 (PGSIXBIT(ch4) << 18) + (PGSIXBIT(ch5) << 24))
63 /* These macros depend on the fact that '0' becomes a zero in SIXBIT */
64 #define ERRCODE_TO_CATEGORY(ec) ((ec) & ((1 << 12) - 1))
65 #define ERRCODE_IS_CATEGORY(ec) (((ec) & ~((1 << 12) - 1)) == 0)
67 /* SQLSTATE codes for errors are defined in a separate file */
68 #include "utils/errcodes.h"
71 /* Which __func__ symbol do we have, if any? */
72 #ifdef HAVE_FUNCNAME__FUNC
73 #define PG_FUNCNAME_MACRO __func__
75 #ifdef HAVE_FUNCNAME__FUNCTION
76 #define PG_FUNCNAME_MACRO __FUNCTION__
78 #define PG_FUNCNAME_MACRO NULL
84 * New-style error reporting API: to be used in this way:
86 * (errcode(ERRCODE_UNDEFINED_CURSOR),
87 * errmsg("portal \"%s\" not found", stmt->portalname),
88 * ... other errxxx() fields as needed ...));
90 * The error level is required, and so is a primary error message (errmsg
91 * or errmsg_internal). All else is optional. errcode() defaults to
92 * ERRCODE_INTERNAL_ERROR if elevel is ERROR or more, ERRCODE_WARNING
93 * if elevel is WARNING, or ERRCODE_SUCCESSFUL_COMPLETION if elevel is
97 #define ereport(elevel, rest) \
98 (errstart(elevel, __FILE__, __LINE__, PG_FUNCNAME_MACRO) ? \
99 (errfinish rest) : (void) 0)
101 extern bool errstart(int elevel, const char *filename, int lineno,
102 const char *funcname);
103 extern void errfinish(int dummy,...);
105 extern int errcode(int sqlerrcode);
107 extern int errcode_for_file_access(void);
108 extern int errcode_for_socket_access(void);
111 errmsg(const char *fmt,...)
112 /* This extension allows gcc to check the format string for consistency with
113 the supplied arguments. */
114 __attribute__((format(printf, 1, 2)));
117 errmsg_internal(const char *fmt,...)
118 /* This extension allows gcc to check the format string for consistency with
119 the supplied arguments. */
120 __attribute__((format(printf, 1, 2)));
123 errdetail(const char *fmt,...)
124 /* This extension allows gcc to check the format string for consistency with
125 the supplied arguments. */
126 __attribute__((format(printf, 1, 2)));
129 errhint(const char *fmt,...)
130 /* This extension allows gcc to check the format string for consistency with
131 the supplied arguments. */
132 __attribute__((format(printf, 1, 2)));
135 errcontext(const char *fmt,...)
136 /* This extension allows gcc to check the format string for consistency with
137 the supplied arguments. */
138 __attribute__((format(printf, 1, 2)));
140 extern int errhidestmt(bool hide_stmt);
142 extern int errfunction(const char *funcname);
143 extern int errposition(int cursorpos);
145 extern int internalerrposition(int cursorpos);
146 extern int internalerrquery(const char *query);
148 extern int geterrposition(void);
149 extern int getinternalerrposition(void);
153 * Old-style error reporting API: to be used in this way:
154 * elog(ERROR, "portal \"%s\" not found", stmt->portalname);
157 #define elog elog_start(__FILE__, __LINE__, PG_FUNCNAME_MACRO), elog_finish
159 extern void elog_start(const char *filename, int lineno, const char *funcname);
161 elog_finish(int elevel, const char *fmt,...)
162 /* This extension allows gcc to check the format string for consistency with
163 the supplied arguments. */
164 __attribute__((format(printf, 2, 3)));
167 /* Support for attaching context information to error reports */
169 typedef struct ErrorContextCallback
171 struct ErrorContextCallback *previous;
172 void (*callback) (void *arg);
174 } ErrorContextCallback;
176 extern PGDLLIMPORT ErrorContextCallback *error_context_stack;
180 * API for catching ereport(ERROR) exits. Use these macros like so:
184 * ... code that might throw ereport(ERROR) ...
188 * ... error recovery code ...
192 * (The braces are not actually necessary, but are recommended so that
193 * pg_indent will indent the construct nicely.) The error recovery code
194 * can optionally do PG_RE_THROW() to propagate the same error outwards.
196 * Note: while the system will correctly propagate any new ereport(ERROR)
197 * occurring in the recovery section, there is a small limit on the number
198 * of levels this will work for. It's best to keep the error recovery
199 * section simple enough that it can't generate any new errors, at least
200 * not before popping the error stack.
205 sigjmp_buf *save_exception_stack = PG_exception_stack; \
206 ErrorContextCallback *save_context_stack = error_context_stack; \
207 sigjmp_buf local_sigjmp_buf; \
208 if (sigsetjmp(local_sigjmp_buf, 0) == 0) \
210 PG_exception_stack = &local_sigjmp_buf
216 PG_exception_stack = save_exception_stack; \
217 error_context_stack = save_context_stack
219 #define PG_END_TRY() \
221 PG_exception_stack = save_exception_stack; \
222 error_context_stack = save_context_stack; \
226 * gcc understands __attribute__((noreturn)); for other compilers, insert
227 * a useless exit() call so that the compiler gets the point.
230 #define PG_RE_THROW() \
233 #define PG_RE_THROW() \
234 (pg_re_throw(), exit(1))
237 extern PGDLLIMPORT sigjmp_buf *PG_exception_stack;
240 /* Stuff that error handlers might want to use */
243 * ErrorData holds the data accumulated during any one ereport() cycle.
244 * Any non-NULL pointers must point to palloc'd data.
245 * (The const pointers are an exception; we assume they point at non-freeable
248 typedef struct ErrorData
250 int elevel; /* error level */
251 bool output_to_server; /* will report to server log? */
252 bool output_to_client; /* will report to client? */
253 bool show_funcname; /* true to force funcname inclusion */
254 bool hide_stmt; /* true to prevent STATEMENT: inclusion */
255 const char *filename; /* __FILE__ of ereport() call */
256 int lineno; /* __LINE__ of ereport() call */
257 const char *funcname; /* __func__ of ereport() call */
258 int sqlerrcode; /* encoded ERRSTATE */
259 char *message; /* primary error message */
260 char *detail; /* detail error message */
261 char *hint; /* hint message */
262 char *context; /* context message */
263 int cursorpos; /* cursor index into query string */
264 int internalpos; /* cursor index into internalquery */
265 char *internalquery; /* text of internally-generated query */
266 int saved_errno; /* errno at entry */
269 extern void EmitErrorReport(void);
270 extern ErrorData *CopyErrorData(void);
271 extern void FreeErrorData(ErrorData *edata);
272 extern void FlushErrorState(void);
273 extern void ReThrowError(ErrorData *edata);
274 extern void pg_re_throw(void) __attribute__((noreturn));
277 /* GUC-configurable parameters */
281 PGERROR_TERSE, /* single-line error messages */
282 PGERROR_DEFAULT, /* recommended style */
283 PGERROR_VERBOSE /* all the facts, ma'am */
286 extern PGErrorVerbosity Log_error_verbosity;
287 extern char *Log_line_prefix;
288 extern int Log_destination;
290 /* Log destination bitmap */
291 #define LOG_DESTINATION_STDERR 1
292 #define LOG_DESTINATION_SYSLOG 2
293 #define LOG_DESTINATION_EVENTLOG 4
294 #define LOG_DESTINATION_CSVLOG 8
296 /* Other exported functions */
297 extern void DebugFileOpen(void);
298 extern char *unpack_sql_state(int sql_state);
301 extern void set_syslog_parameters(const char *ident, int facility);
305 * Write errors to stderr (or by equal means when stderr is
306 * not available). Used before ereport/elog can be used
307 * safely (memory context, GUC load etc)
310 write_stderr(const char *fmt,...)
311 /* This extension allows gcc to check the format string for consistency with
312 the supplied arguments. */
313 __attribute__((format(printf, 1, 2)));