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39 * Declares fatal error handling and debugging routines for C code.
42 * \ingroup module_utility
44 #ifndef GMX_UTILITY_FATALERROR_H
45 #define GMX_UTILITY_FATALERROR_H
50 #include "basedefinitions.h"
57 /** For compatibility with non-clang compilers. */
58 #define __has_feature(x) 0
61 /*! \def GMX_ATTRIBUTE_NORETURN
63 * Indicate that a function is not expected to return.
66 * There are functions outside this header that need the same attribute.
67 * This could be moved to a generic header and made it affect also compiler
70 #ifndef GMX_ATTRIBUTE_NORETURN
71 #if __has_feature(attribute_analyzer_noreturn)
72 #define GMX_ATTRIBUTE_NORETURN __attribute__((analyzer_noreturn))
74 #define GMX_ATTRIBUTE_NORETURN
78 /** Implementation for where(). */
80 _where(const char *file, int line);
81 /** Prints filename and line to stdlog. */
82 #define where() _where(__FILE__, __LINE__)
85 * Low-level fatal error reporting routine for collective MPI errors.
87 * This function works as gmx_fatal(), but provides additional control for
88 * cases where it is known that the same error occurs on multiple MPI ranks.
89 * The error handler is called only if \p bMaster is `TRUE`, and MPI_Finalize()
90 * is called instead of MPI_Abort() in MPI-enabled \Gromacs if \p bFinalize is
93 * This is used to implement gmx_fatal_collective() (which cannot be declared
94 * here, since it would bring with it mdrun-specific dependencies).
97 gmx_fatal_mpi_va(int fatal_errno, const char *file, int line, gmx_bool bMaster,
98 gmx_bool bFinalize, const char *fmt, va_list ap) GMX_ATTRIBUTE_NORETURN;
101 * Fatal error reporting routine for \Gromacs.
103 * This function prints a fatal error message with a header that contains the
104 * source file and line number of the call, followed by the string specified by
105 * \p fmt and supplied parameters.
106 * If \p fatal_errno is 0, only the message and arguments are printed.
107 * If \p fatal_errno is a legal system errno or -1, a perror()-like message is
108 * printed after the first message; if fatal_errno is -1, the last system errno
110 * The format of \p fmt uses printf()-like formatting.
112 * In case all MPI processes want to stop with the same fatal error,
113 * use gmx_fatal_collective(), declared in network.h,
114 * to avoid having as many error messages as processes.
116 * The first three parameters can be provided through ::FARGS:
118 gmx_fatal(FARGS, fmt, ...);
122 gmx_fatal(int fatal_errno, const char *file, int line, const char *fmt, ...) GMX_ATTRIBUTE_NORETURN;
123 /** Helper macro to pass first three parameters to gmx_fatal(). */
124 #define FARGS 0, __FILE__, __LINE__
126 /** Sets the log file for printing error messages. */
128 gmx_fatal_set_log_file(FILE *fp);
133 * Functions can write to this file for debug info.
134 * Before writing to it, it should be checked whether the file is not NULL:
138 fprintf(debug, "%s", "Debug text");
143 /** Whether extra debugging is enabled. */
144 extern gmx_bool gmx_debug_at;
146 /** Initializes debugging variables */
147 void init_debug(const int dbglevel, const char *dbgfile);
149 /** Returns TRUE when the program was started in debug mode */
150 gmx_bool bDebugMode(void);
153 * Implementation for range_check() and range_check_mesg().
155 * \p warn_str can be NULL.
157 void _range_check(int n, int n_min, int n_max, const char *warn_str,
159 const char *file, int line);
162 * Checks that a variable is within a range.
164 * If \p n is not in range [n_min, n_max), a fatal error is raised.
165 * \p n_min is inclusive, but \p n_max is not.
167 #define range_check_mesg(n, n_min, n_max, str) _range_check(n, n_min, n_max, str,#n, __FILE__, __LINE__)
170 * Checks that a variable is within a range.
172 * This works as range_check_mesg(), but with a default error message.
174 #define range_check(n, n_min, n_max) _range_check(n, n_min, n_max, NULL,#n, __FILE__, __LINE__)
177 * Returns error message corresponding to a string key.
179 * This maps the strings used by gmx_error() to actual error messages.
180 * Caller is responsible of freeing the returned string.
182 char *gmx_strerror(const char *key);
184 /** Implementation for gmx_error(). */
185 void _gmx_error(const char *key, const char *msg, const char *file, int line) GMX_ATTRIBUTE_NORETURN;
187 * Alternative fatal error routine with canned messages.
189 * This works as gmx_fatal(), except that a generic error message is added
190 * based on a string key, and printf-style formatting is not supported.
191 * Should not typically be called directly, but through gmx_bug(), gmx_call()
194 #define gmx_error(key, msg) _gmx_error(key, msg, __FILE__, __LINE__)
196 /*! \name Fatal error routines for certain types of errors
198 * These wrap gmx_error() and provide the \p key parameter as one of the
199 * recognized strings.
202 #define gmx_bug(msg) gmx_error("bug", msg)
203 #define gmx_call(msg) gmx_error("call", msg)
204 #define gmx_comm(msg) gmx_error("comm", msg)
205 #define gmx_file(msg) gmx_error("file", msg)
206 #define gmx_cmd(msg) gmx_error("cmd", msg)
207 #define gmx_impl(msg) gmx_error("impl", msg)
208 #define gmx_incons(msg) gmx_error("incons", msg)
209 #define gmx_input(msg) gmx_error("input", msg)
210 #define gmx_mem(msg) gmx_error("mem", msg)
211 #define gmx_open(fn) gmx_error("open", fn)
215 * Sets an error handler for gmx_fatal() and other fatal error routines.
217 * The default handler prints the message.
218 * \Gromacs will terminate the program after the error handler returns.
219 * To make gmx_fatal_collective() work, the error handler should not terminate
220 * the program, as it cannot know what is the desired way of termination.
221 * The string passed to the handler may be a multi-line string.
226 set_gmx_error_handler(void (*func)(const char *msg));
229 * Prints a warning message to stderr.
231 * The format of \p fmt uses printf()-like formatting.
232 * The message string should NOT start with "WARNING"
233 * and should NOT end with a newline.
235 void gmx_warning(const char *fmt, ...);