GDAL
cpl_error.h
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1/**********************************************************************
2 * $Id$
3 *
4 * Name: cpl_error.h
5 * Project: CPL - Common Portability Library
6 * Purpose: CPL Error handling
7 * Author: Daniel Morissette, danmo@videotron.ca
8 *
9 **********************************************************************
10 * Copyright (c) 1998, Daniel Morissette
11 *
12 * Permission is hereby granted, free of charge, to any person obtaining a
13 * copy of this software and associated documentation files (the "Software"),
14 * to deal in the Software without restriction, including without limitation
15 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
16 * and/or sell copies of the Software, and to permit persons to whom the
17 * Software is furnished to do so, subject to the following conditions:
18 *
19 * The above copyright notice and this permission notice shall be included
20 * in all copies or substantial portions of the Software.
21 *
22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
23 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
24 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
25 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
26 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
27 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
28 * DEALINGS IN THE SOFTWARE.
29 ****************************************************************************/
30
31#ifndef CPL_ERROR_H_INCLUDED
32#define CPL_ERROR_H_INCLUDED
33
34#include "cpl_port.h"
35
36#include <stdarg.h>
37#include <stddef.h>
38
39/*=====================================================================
40 Error handling functions (cpl_error.c)
41 =====================================================================*/
42
50
52typedef enum
53{
54 CE_None = 0,
55 CE_Debug = 1,
56 CE_Warning = 2,
57 CE_Failure = 3,
58 CE_Fatal = 4
59} CPLErr;
60
61/* ==================================================================== */
62/* Well known error codes. */
63/* ==================================================================== */
64
65#ifdef STRICT_CPLERRORNUM_TYPE
66
67/* This is not appropriate for the general case, as there are parts */
68/* of GDAL which use custom error codes, but this can help diagnose confusions */
69/* between CPLErr and CPLErrorNum */
70typedef enum
71{
90
91#else
92
94typedef int CPLErrorNum;
95
97#define CPLE_None 0
99#define CPLE_AppDefined 1
101#define CPLE_OutOfMemory 2
103#define CPLE_FileIO 3
105#define CPLE_OpenFailed 4
107#define CPLE_IllegalArg 5
109#define CPLE_NotSupported 6
111#define CPLE_AssertionFailed 7
113#define CPLE_NoWriteAccess 8
115#define CPLE_UserInterrupt 9
117#define CPLE_ObjectNull 10
118
119/*
120 * Filesystem-specific errors
121 */
123#define CPLE_HttpResponse 11
125#define CPLE_AWSBucketNotFound 12
127#define CPLE_AWSObjectNotFound 13
129#define CPLE_AWSAccessDenied 14
131#define CPLE_AWSInvalidCredentials 15
133#define CPLE_AWSSignatureDoesNotMatch 16
135#define CPLE_AWSError 17
136
137/* 100 - 299 reserved for GDAL */
138
139#endif
140
141void CPL_DLL CPLError(CPLErr eErrClass, CPLErrorNum err_no, CPL_FORMAT_STRING(const char *fmt), ...) CPL_PRINT_FUNC_FORMAT (3, 4);
142void CPL_DLL CPLErrorV(CPLErr, CPLErrorNum, const char *, va_list );
143void CPL_DLL CPLEmergencyError( const char * ) CPL_NO_RETURN;
144void CPL_DLL CPL_STDCALL CPLErrorReset( void );
145CPLErrorNum CPL_DLL CPL_STDCALL CPLGetLastErrorNo( void );
146CPLErr CPL_DLL CPL_STDCALL CPLGetLastErrorType( void );
147const char CPL_DLL * CPL_STDCALL CPLGetLastErrorMsg( void );
148GUInt32 CPL_DLL CPL_STDCALL CPLGetErrorCounter( void );
149void CPL_DLL * CPL_STDCALL CPLGetErrorHandlerUserData(void);
150void CPL_DLL CPLErrorSetState( CPLErr eErrClass, CPLErrorNum err_no, const char* pszMsg );
152void CPL_DLL CPLCleanupErrorMutex( void );
156typedef void (CPL_STDCALL *CPLErrorHandler)(CPLErr, CPLErrorNum, const char*);
157
158void CPL_DLL CPL_STDCALL CPLLoggingErrorHandler( CPLErr, CPLErrorNum, const char * );
159void CPL_DLL CPL_STDCALL CPLDefaultErrorHandler( CPLErr, CPLErrorNum, const char * );
160void CPL_DLL CPL_STDCALL CPLQuietErrorHandler( CPLErr, CPLErrorNum, const char * );
161void CPLTurnFailureIntoWarning( int bOn );
162
164CPLErrorHandler CPL_DLL CPL_STDCALL CPLSetErrorHandlerEx( CPLErrorHandler, void* );
165void CPL_DLL CPL_STDCALL CPLPushErrorHandler( CPLErrorHandler );
166void CPL_DLL CPL_STDCALL CPLPushErrorHandlerEx( CPLErrorHandler, void* );
167void CPL_DLL CPL_STDCALL CPLSetCurrentErrorHandlerCatchDebug( int bCatchDebug );
168void CPL_DLL CPL_STDCALL CPLPopErrorHandler(void);
169
170#ifdef WITHOUT_CPLDEBUG
171#define CPLDebug(...) /* Eat all CPLDebug calls. */
172#else
173void CPL_DLL CPLDebug(const char *, CPL_FORMAT_STRING(const char *), ...)
175#endif
176
177#ifdef DEBUG
181#define CPLDebugOnly(...) CPLDebug(__VA_ARGS__)
182#else
186#define CPLDebugOnly(...)
187#endif
188
189void CPL_DLL CPL_STDCALL _CPLAssert( const char *, const char *, int ) CPL_NO_RETURN;
190
191#if defined(DEBUG) && !defined(CPPCHECK)
193# define CPLAssert(expr) ((expr) ? (void)(0) : _CPLAssert(#expr,__FILE__,__LINE__))
195# define CPLAssertAlwaysEval(expr) CPLAssert(expr)
196#else
198# define CPLAssert(expr)
199#ifdef __cplusplus
201# define CPLAssertAlwaysEval(expr) CPL_IGNORE_RET_VAL(expr)
202#else
204# define CPLAssertAlwaysEval(expr) (void)(expr)
205#endif
206#endif
207
209
211/*
212 * Helper macros used for input parameters validation.
213 */
214#ifdef DEBUG
215# define VALIDATE_POINTER_ERR CE_Fatal
216#else
217# define VALIDATE_POINTER_ERR CE_Failure
218#endif
219
220
221#if defined(__cplusplus) && !defined(CPL_SUPRESS_CPLUSPLUS) && !defined(DOXYGEN_SKIP)
222
223extern "C++"
224{
225template<class T> T* CPLAssertNotNull(T* x) CPL_RETURNS_NONNULL;
226template<class T> T* CPLAssertNotNull(T* x) { CPLAssert(x); return x; }
227
228#include <string>
229
230class CPLErrorHandlerPusher
231{
232 public:
233 explicit CPLErrorHandlerPusher(CPLErrorHandler hHandler)
234 {
235 CPLPushErrorHandler(hHandler);
236 }
237
238 CPLErrorHandlerPusher(CPLErrorHandler hHandler, void* user_data)
239 {
240 CPLPushErrorHandlerEx(hHandler, user_data);
241 }
242
243 ~CPLErrorHandlerPusher()
244 {
246 }
247};
248
249class CPLErrorStateBackuper
250{
251 CPLErrorNum m_nLastErrorNum;
252 CPLErr m_nLastErrorType;
253 std::string m_osLastErrorMsg;
254
255 public:
256 CPLErrorStateBackuper() :
257 m_nLastErrorNum(CPLGetLastErrorNo()),
258 m_nLastErrorType(CPLGetLastErrorType()),
259 m_osLastErrorMsg(CPLGetLastErrorMsg())
260 {}
261
262 ~CPLErrorStateBackuper()
263 {
264 CPLErrorSetState(m_nLastErrorType, m_nLastErrorNum,
265 m_osLastErrorMsg.c_str());
266 }
267};
268
269}
270
271#ifdef GDAL_COMPILATION
272// internal only
273bool CPLIsDefaultErrorHandlerAndCatchDebug();
274#endif
275
276#endif
277
281#define VALIDATE_POINTER0(ptr, func) \
282 do { if( CPL_NULLPTR == ptr ) \
283 { \
284 CPLErr const ret = VALIDATE_POINTER_ERR; \
285 CPLError( ret, CPLE_ObjectNull, \
286 "Pointer \'%s\' is NULL in \'%s\'.\n", #ptr, (func)); \
287 return; }} while(0)
288
290#define VALIDATE_POINTER1(ptr, func, rc) \
291 do { if( CPL_NULLPTR == ptr ) \
292 { \
293 CPLErr const ret = VALIDATE_POINTER_ERR; \
294 CPLError( ret, CPLE_ObjectNull, \
295 "Pointer \'%s\' is NULL in \'%s\'.\n", #ptr, (func)); \
296 return (rc); }} while(0)
297
298#endif /* CPL_ERROR_H_INCLUDED */
#define CPLE_IllegalArg
Illegal argument.
Definition: cpl_error.h:107
void CPLErrorSetState(CPLErr eErrClass, CPLErrorNum err_no, const char *pszMsg)
Restore an error state, without emitting an error.
Definition: cpl_error.cpp:775
GUInt32 CPLGetErrorCounter(void)
Get the error counter.
Definition: cpl_error.cpp:900
#define CPLE_AWSObjectNotFound
AWSObjectNotFound.
Definition: cpl_error.h:127
#define CPLE_AssertionFailed
Assertion failed.
Definition: cpl_error.h:111
void CPLPushErrorHandlerEx(CPLErrorHandler, void *)
Push a new CPLError handler with user data on the error context.
Definition: cpl_error.cpp:1237
#define CPLE_AWSSignatureDoesNotMatch
AWSSignatureDoesNotMatch.
Definition: cpl_error.h:133
#define CPLE_None
No error.
Definition: cpl_error.h:97
void CPLErrorReset(void)
Erase any traces of previous errors.
Definition: cpl_error.cpp:740
void CPLLoggingErrorHandler(CPLErr, CPLErrorNum, const char *)
Error handler that logs into the file defined by the CPL_LOG configuration option,...
Definition: cpl_error.cpp:1014
#define CPLE_NotSupported
Not supported.
Definition: cpl_error.h:109
#define CPLE_AWSInvalidCredentials
AWSInvalidCredentials.
Definition: cpl_error.h:131
#define CPLAssert(expr)
Assert on an expression.
Definition: cpl_error.h:198
CPLErr
Error category.
Definition: cpl_error.h:53
#define CPLE_FileIO
File I/O error.
Definition: cpl_error.h:103
CPLErrorNum CPLGetLastErrorNo(void)
Fetch the last error number.
Definition: cpl_error.cpp:829
#define CPLE_AppDefined
Application defined error.
Definition: cpl_error.h:99
#define CPLE_OpenFailed
Open failed.
Definition: cpl_error.h:105
const char * CPLGetLastErrorMsg(void)
Get the last error message.
Definition: cpl_error.cpp:877
CPLErrorHandler CPLSetErrorHandler(CPLErrorHandler)
Install custom error handler.
Definition: cpl_error.cpp:1193
#define CPLE_AWSAccessDenied
AWSAccessDenied.
Definition: cpl_error.h:129
#define CPLE_ObjectNull
NULL object.
Definition: cpl_error.h:117
void CPLDefaultErrorHandler(CPLErr, CPLErrorNum, const char *)
Default error handler.
Definition: cpl_error.cpp:934
CPLErr CPLGetLastErrorType(void)
Fetch the last error type.
Definition: cpl_error.cpp:853
int CPLErrorNum
Error number.
Definition: cpl_error.h:94
void * CPLGetErrorHandlerUserData(void)
Fetch the user data for the error context.
Definition: cpl_error.cpp:188
void(* CPLErrorHandler)(CPLErr, CPLErrorNum, const char *)
Callback for a custom error handler.
Definition: cpl_error.h:156
void CPLTurnFailureIntoWarning(int bOn)
Whether failures should be turned into warnings.
Definition: cpl_error.cpp:1087
void CPLEmergencyError(const char *)
Fatal error when things are bad.
Definition: cpl_error.cpp:491
void _CPLAssert(const char *, const char *, int)
Report failure of a logical assertion.
Definition: cpl_error.cpp:1344
#define CPLE_HttpResponse
HTTP response.
Definition: cpl_error.h:123
#define CPLE_AWSBucketNotFound
AWSBucketNotFound.
Definition: cpl_error.h:125
void CPLPopErrorHandler(void)
Pop error handler off stack.
Definition: cpl_error.cpp:1271
void CPLDebug(const char *, const char *,...)
Display a debugging message.
Definition: cpl_error.cpp:607
void CPLPushErrorHandler(CPLErrorHandler)
Push a new CPLError handler.
Definition: cpl_error.cpp:1214
#define CPLE_NoWriteAccess
No write access.
Definition: cpl_error.h:113
#define CPLE_UserInterrupt
User interrupted.
Definition: cpl_error.h:115
void CPLErrorV(CPLErr, CPLErrorNum, const char *, va_list)
Same as CPLError() but with a va_list.
Definition: cpl_error.cpp:326
void CPLQuietErrorHandler(CPLErr, CPLErrorNum, const char *)
Error handler that does not do anything, except for debug messages.
Definition: cpl_error.cpp:999
#define CPLE_OutOfMemory
Out of memory error.
Definition: cpl_error.h:101
CPLErrorHandler CPLSetErrorHandlerEx(CPLErrorHandler, void *)
Install custom error handle with user's data.
Definition: cpl_error.cpp:1119
void CPLSetCurrentErrorHandlerCatchDebug(int bCatchDebug)
Set if the current error handler should intercept debug messages, or if they should be processed by t...
Definition: cpl_error.cpp:1310
void CPLError(CPLErr eErrClass, CPLErrorNum err_no, const char *fmt,...)
Report an error.
Definition: cpl_error.cpp:310
Core portability definitions for CPL.
#define CPL_NO_RETURN
Qualifier for a function that does not return at all (terminates the process)
Definition: cpl_port.h:886
#define CPL_C_END
Macro to end a block of C symbols.
Definition: cpl_port.h:306
#define CPL_C_START
Macro to start a block of C symbols.
Definition: cpl_port.h:304
#define CPL_FORMAT_STRING(arg)
Macro into which to wrap the format argument of a printf-like function.
Definition: cpl_port.h:859
#define CPL_RETURNS_NONNULL
Qualifier for a function that does not return NULL.
Definition: cpl_port.h:902
unsigned int GUInt32
Unsigned int32 type.
Definition: cpl_port.h:195
#define CPL_PRINT_FUNC_FORMAT(format_idx, arg_idx)
Tag a function to have printf() formatting.
Definition: cpl_port.h:844