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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 "gromacs/utility/basedefinitions.h"
59 * Functions can write to this file for debug info.
60 * Before writing to it, it should be checked whether the file is not NULL:
64 fprintf(debug, "%s", "Debug text");
69 /** Whether extra debugging is enabled. */
70 extern gmx_bool gmx_debug_at;
73 * Initializes debugging variables.
75 * This function is not threadsafe. It should be called as part of
76 * initializing \Gromacs, before any other thread accesses the library.
77 * For command line programs, gmx::CommandLineModuleManager takes care
78 * of this if the user requests debugging.
80 void gmx_init_debug(int dbglevel, const char *dbgfile);
82 /** Returns TRUE when the program was started in debug mode */
83 gmx_bool bDebugMode(void);
85 /** Sets the log file for printing error messages. */
87 gmx_fatal_set_log_file(FILE *fp);
89 /** Function pointer type for fatal error handler callback. */
90 typedef void (*gmx_error_handler_t)(const char *title, const char *msg, const char *file, int line);
93 * Sets an error handler for gmx_fatal() and other fatal error routines.
95 * The default handler prints the message.
96 * \Gromacs will terminate the program after the error handler returns.
97 * To make gmx_fatal_collective() work, the error handler should not terminate
98 * the program, as it cannot know what is the desired way of termination.
99 * The message passed to the handler may be a multi-line string.
103 void gmx_set_error_handler(gmx_error_handler_t func);
105 /** Identifies the state of the program on a fatal error. */
109 * Clean exit is possible.
111 * There should be no concurrently executing code that might be accessing
112 * global objects, and all MPI ranks should reach the same fatal error.
116 * Program needs to be aborted.
118 * There are no preconditions for this state.
122 * Program needs to be aborted, but some other rank is responsible of it.
124 * There should be some other MPI rank that reaches the same fatal error,
125 * but uses ExitType_Abort. The other ranks can then use
126 * ExitType_NonMasterAbort to wait for that one rank to issue the abort.
128 ExitType_NonMasterAbort
132 * Helper function to terminate the program on a fatal error.
134 * \param[in] exitType Identifies the state of the program at the time of the
135 * call, determining how the program can be terminated.
136 * \param[in] returnValue Exit code for the program, for cases where it can be
139 [[noreturn]] void gmx_exit_on_fatal_error(enum ExitType exitType, int returnValue);
142 * Low-level fatal error reporting routine for collective MPI errors.
144 * This function works as gmx_fatal(), but provides additional control for
145 * cases where it is known that the same error occurs on multiple MPI ranks.
146 * The error handler is called only if \p bMaster is `TRUE`, and MPI_Finalize()
147 * is called instead of MPI_Abort() in MPI-enabled \Gromacs if \p bFinalize is
150 * This is used to implement gmx_fatal_collective() (which cannot be declared
151 * here, since it would bring with it mdrun-specific dependencies).
154 gmx_fatal_mpi_va(int fatal_errno, const char *file, int line,
155 gmx_bool bMaster, gmx_bool bFinalize,
156 const char *fmt, va_list ap);
159 * Fatal error reporting routine for \Gromacs.
161 * This function prints a fatal error message with a header that contains the
162 * source file and line number of the call, followed by the string specified by
163 * \p fmt and supplied parameters.
164 * If \p fatal_errno is 0, only the message and arguments are printed.
165 * If \p fatal_errno is a legal system errno or -1, a perror()-like message is
166 * printed after the first message; if fatal_errno is -1, the last system errno
168 * The format of \p fmt uses printf()-like formatting.
170 * In case all MPI processes want to stop with the same fatal error,
171 * use gmx_fatal_collective(), declared in network.h,
172 * to avoid having as many error messages as processes.
174 * The first three parameters can be provided through ::FARGS:
176 gmx_fatal(FARGS, fmt, ...);
180 gmx_fatal(int fatal_errno, const char *file, int line, const char *fmt, ...);
181 /** Helper macro to pass first three parameters to gmx_fatal(). */
182 #define FARGS 0, __FILE__, __LINE__
184 /** Implementation for gmx_error(). */
185 [[noreturn]] void _gmx_error(const char *key, const char *msg, const char *file, int line);
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_call() etc.
193 #define gmx_error(key, msg) _gmx_error(key, msg, __FILE__, __LINE__)
195 /*! \name Fatal error routines for certain types of errors
197 * These wrap gmx_error() and provide the \p key parameter as one of the
198 * recognized strings.
201 #define gmx_call(msg) gmx_error("call", msg)
202 #define gmx_comm(msg) gmx_error("comm", msg)
203 #define gmx_file(msg) gmx_error("file", msg)
204 #define gmx_impl(msg) gmx_error("impl", msg)
205 #define gmx_incons(msg) gmx_error("incons", msg)
206 #define gmx_input(msg) gmx_error("input", msg)
207 #define gmx_mem(msg) gmx_error("mem", msg)
208 #define gmx_open(fn) gmx_error("open", fn)
212 * Implementation for range_check() and range_check_mesg().
214 * \p warn_str can be NULL.
216 void _range_check(int n, int n_min, int n_max, const char *warn_str,
218 const char *file, int line);
221 * Checks that a variable is within a range.
223 * If \p n is not in range [n_min, n_max), a fatal error is raised.
224 * \p n_min is inclusive, but \p n_max is not.
226 #define range_check_mesg(n, n_min, n_max, str) _range_check(n, n_min, n_max, str,#n, __FILE__, __LINE__)
229 * Checks that a variable is within a range.
231 * This works as range_check_mesg(), but with a default error message.
233 #define range_check(n, n_min, n_max) _range_check(n, n_min, n_max, NULL,#n, __FILE__, __LINE__)
236 * Prints a warning message to stderr.
238 * The format of \p fmt uses printf()-like formatting.
239 * The message string should NOT start with "WARNING"
240 * and should NOT end with a newline.
242 void gmx_warning(const char *fmt, ...);