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 1.71 2004/07/31 00:45:43 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 /* SQLSTATE codes for errors are defined in a separate file */
65 #include "utils/errcodes.h"
68 /* Which __func__ symbol do we have, if any? */
69 #ifdef HAVE_FUNCNAME__FUNC
70 #define PG_FUNCNAME_MACRO __func__
72 #ifdef HAVE_FUNCNAME__FUNCTION
73 #define PG_FUNCNAME_MACRO __FUNCTION__
75 #define PG_FUNCNAME_MACRO NULL
81 * New-style error reporting API: to be used in this way:
83 * (errcode(ERRCODE_UNDEFINED_CURSOR),
84 * errmsg("portal \"%s\" not found", stmt->portalname),
85 * ... other errxxx() fields as needed ...));
87 * The error level is required, and so is a primary error message (errmsg
88 * or errmsg_internal). All else is optional. errcode() defaults to
89 * ERRCODE_INTERNAL_ERROR if elevel is ERROR or more, ERRCODE_WARNING
90 * if elevel is WARNING, or ERRCODE_SUCCESSFUL_COMPLETION if elevel is
94 #define ereport(elevel, rest) \
95 (errstart(elevel, __FILE__, __LINE__, PG_FUNCNAME_MACRO) ? \
96 (errfinish rest) : (void) 0)
98 extern bool errstart(int elevel, const char *filename, int lineno,
99 const char *funcname);
100 extern void errfinish(int dummy,...);
102 extern int errcode(int sqlerrcode);
104 extern int errcode_for_file_access(void);
105 extern int errcode_for_socket_access(void);
108 errmsg(const char *fmt,...)
109 /* This extension allows gcc to check the format string for consistency with
110 the supplied arguments. */
111 __attribute__((format(printf, 1, 2)));
114 errmsg_internal(const char *fmt,...)
115 /* This extension allows gcc to check the format string for consistency with
116 the supplied arguments. */
117 __attribute__((format(printf, 1, 2)));
120 errdetail(const char *fmt,...)
121 /* This extension allows gcc to check the format string for consistency with
122 the supplied arguments. */
123 __attribute__((format(printf, 1, 2)));
126 errhint(const char *fmt,...)
127 /* This extension allows gcc to check the format string for consistency with
128 the supplied arguments. */
129 __attribute__((format(printf, 1, 2)));
132 errcontext(const char *fmt,...)
133 /* This extension allows gcc to check the format string for consistency with
134 the supplied arguments. */
135 __attribute__((format(printf, 1, 2)));
137 extern int errfunction(const char *funcname);
138 extern int errposition(int cursorpos);
140 extern int internalerrposition(int cursorpos);
141 extern int internalerrquery(const char *query);
143 extern int geterrposition(void);
144 extern int getinternalerrposition(void);
148 * Old-style error reporting API: to be used in this way:
149 * elog(ERROR, "portal \"%s\" not found", stmt->portalname);
152 #define elog errstart(ERROR, __FILE__, __LINE__, PG_FUNCNAME_MACRO), elog_finish
155 elog_finish(int elevel, const char *fmt,...)
156 /* This extension allows gcc to check the format string for consistency with
157 the supplied arguments. */
158 __attribute__((format(printf, 2, 3)));
161 /* Support for attaching context information to error reports */
163 typedef struct ErrorContextCallback
165 struct ErrorContextCallback *previous;
166 void (*callback) (void *arg);
168 } ErrorContextCallback;
170 extern DLLIMPORT ErrorContextCallback *error_context_stack;
174 * API for catching ereport(ERROR) exits. Use these macros like so:
178 * ... code that might throw ereport(ERROR) ...
182 * ... error recovery code ...
186 * (The braces are not actually necessary, but are recommended so that
187 * pg_indent will indent the construct nicely.) The error recovery code
188 * can optionally do PG_RE_THROW() to propagate the same error outwards.
190 * Note: while the system will correctly propagate any new ereport(ERROR)
191 * occurring in the recovery section, there is a small limit on the number
192 * of levels this will work for. It's best to keep the error recovery
193 * section simple enough that it can't generate any new errors, at least
194 * not before popping the error stack.
199 sigjmp_buf *save_exception_stack = PG_exception_stack; \
200 ErrorContextCallback *save_context_stack = error_context_stack; \
201 sigjmp_buf local_sigjmp_buf; \
202 if (sigsetjmp(local_sigjmp_buf, 1) == 0) \
204 PG_exception_stack = &local_sigjmp_buf
210 PG_exception_stack = save_exception_stack; \
211 error_context_stack = save_context_stack
213 #define PG_END_TRY() \
215 PG_exception_stack = save_exception_stack; \
216 error_context_stack = save_context_stack; \
219 #define PG_RE_THROW() \
220 siglongjmp(*PG_exception_stack, 1)
222 extern DLLIMPORT sigjmp_buf *PG_exception_stack;
225 /* Stuff that error handlers might want to use */
228 * ErrorData holds the data accumulated during any one ereport() cycle.
229 * Any non-NULL pointers must point to palloc'd data.
230 * (The const pointers are an exception; we assume they point at non-freeable
233 typedef struct ErrorData
235 int elevel; /* error level */
236 bool output_to_server; /* will report to server log? */
237 bool output_to_client; /* will report to client? */
238 bool show_funcname; /* true to force funcname inclusion */
239 const char *filename; /* __FILE__ of ereport() call */
240 int lineno; /* __LINE__ of ereport() call */
241 const char *funcname; /* __func__ of ereport() call */
242 int sqlerrcode; /* encoded ERRSTATE */
243 char *message; /* primary error message */
244 char *detail; /* detail error message */
245 char *hint; /* hint message */
246 char *context; /* context message */
247 int cursorpos; /* cursor index into query string */
248 int internalpos; /* cursor index into internalquery */
249 char *internalquery; /* text of internally-generated query */
250 int saved_errno; /* errno at entry */
253 extern void EmitErrorReport(void);
254 extern ErrorData *CopyErrorData(void);
255 extern void FreeErrorData(ErrorData *edata);
256 extern void FlushErrorState(void);
257 extern void ReThrowError(ErrorData *edata);
260 /* GUC-configurable parameters */
264 PGERROR_TERSE, /* single-line error messages */
265 PGERROR_DEFAULT, /* recommended style */
266 PGERROR_VERBOSE /* all the facts, ma'am */
269 extern PGErrorVerbosity Log_error_verbosity;
270 extern char *Log_line_prefix;
271 extern unsigned int Log_destination;
273 /* Log destination bitmap */
274 #define LOG_DESTINATION_STDERR 1
275 #define LOG_DESTINATION_SYSLOG 2
276 #define LOG_DESTINATION_EVENTLOG 4
278 /* Other exported functions */
279 extern void DebugFileOpen(void);
282 * Write errors to stderr (or by equal means when stderr is
283 * not available). Used before ereport/elog can be used
284 * safely (memory context, GUC load etc)
286 extern void write_stderr(const char *fmt,...)
287 /* This extension allows gcc to check the format string for consistency with
288 the supplied arguments. */
289 __attribute__((format(printf, 1, 2)));