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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"
55 * Functions can write to this file for debug info.
56 * Before writing to it, it should be checked whether the file is not NULL:
60 fprintf(debug, "%s", "Debug text");
65 /** Whether extra debugging is enabled. */
66 extern gmx_bool gmx_debug_at;
69 * Initializes debugging variables.
71 * This function is not threadsafe. It should be called as part of
72 * initializing \Gromacs, before any other thread accesses the library.
73 * For command line programs, gmx::CommandLineModuleManager takes care
74 * of this if the user requests debugging.
76 void gmx_init_debug(int dbglevel, const char *dbgfile);
78 /** Returns TRUE when the program was started in debug mode */
79 gmx_bool bDebugMode();
81 /** Sets the log file for printing error messages. */
83 gmx_fatal_set_log_file(FILE *fp);
85 /** Function pointer type for fatal error handler callback. */
86 typedef void (*gmx_error_handler_t)(const char *title, const char *msg, const char *file, int line);
89 * Sets an error handler for gmx_fatal() and other fatal error routines.
91 * The default handler prints the message.
92 * \Gromacs will terminate the program after the error handler returns.
93 * To make gmx_fatal_collective() work, the error handler should not terminate
94 * the program, as it cannot know what is the desired way of termination.
95 * The message passed to the handler may be a multi-line string.
99 void gmx_set_error_handler(gmx_error_handler_t func);
101 /** Identifies the state of the program on a fatal error. */
105 * Clean exit is possible.
107 * There should be no concurrently executing code that might be accessing
108 * global objects, and all MPI ranks should reach the same fatal error.
112 * Program needs to be aborted.
114 * There are no preconditions for this state.
118 * Program needs to be aborted, but some other rank is responsible of it.
120 * There should be some other MPI rank that reaches the same fatal error,
121 * but uses ExitType_Abort. The other ranks can then use
122 * ExitType_NonMasterAbort to wait for that one rank to issue the abort.
124 ExitType_NonMasterAbort
128 * Helper function to terminate the program on a fatal error.
130 * \param[in] exitType Identifies the state of the program at the time of the
131 * call, determining how the program can be terminated.
132 * \param[in] returnValue Exit code for the program, for cases where it can be
135 [[noreturn]] void gmx_exit_on_fatal_error(enum ExitType exitType, int returnValue);
138 * Low-level fatal error reporting routine for collective MPI errors.
140 * This function works as gmx_fatal(), but provides additional control for
141 * cases where it is known that the same error occurs on multiple MPI ranks.
142 * The error handler is called only if \p bMaster is `TRUE`, and MPI_Finalize()
143 * is called instead of MPI_Abort() in MPI-enabled \Gromacs if \p bFinalize is
146 * This is used to implement gmx_fatal_collective() (which cannot be declared
147 * here, since it would bring with it mdrun-specific dependencies).
150 gmx_fatal_mpi_va(int fatal_errno, const char *file, int line,
151 gmx_bool bMaster, gmx_bool bFinalize,
152 const char *fmt, va_list ap);
155 * Fatal error reporting routine for \Gromacs.
157 * This function prints a fatal error message with a header that contains the
158 * source file and line number of the call, followed by the string specified by
159 * \p fmt and supplied parameters.
160 * If \p fatal_errno is 0, only the message and arguments are printed.
161 * If \p fatal_errno is a legal system errno or -1, a perror()-like message is
162 * printed after the first message; if fatal_errno is -1, the last system errno
164 * The format of \p fmt uses printf()-like formatting.
166 * In case all MPI processes want to stop with the same fatal error,
167 * use gmx_fatal_collective(), declared in network.h,
168 * to avoid having as many error messages as processes.
170 * The first three parameters can be provided through ::FARGS:
172 gmx_fatal(FARGS, fmt, ...);
176 gmx_fatal(int fatal_errno, const char *file, int line, const char *fmt, ...);
177 /** Helper macro to pass first three parameters to gmx_fatal(). */
178 #define FARGS 0, __FILE__, __LINE__
180 /** Implementation for gmx_error(). */
181 [[noreturn]] void _gmx_error(const char *key, const char *msg, const char *file, int line);
183 * Alternative fatal error routine with canned messages.
185 * This works as gmx_fatal(), except that a generic error message is added
186 * based on a string key, and printf-style formatting is not supported.
187 * Should not typically be called directly, but through gmx_call() etc.
189 #define gmx_error(key, msg) _gmx_error(key, msg, __FILE__, __LINE__)
191 /*! \name Fatal error routines for certain types of errors
193 * These wrap gmx_error() and provide the \p key parameter as one of the
194 * recognized strings.
197 #define gmx_call(msg) gmx_error("call", msg)
198 #define gmx_comm(msg) gmx_error("comm", msg)
199 #define gmx_file(msg) gmx_error("file", msg)
200 #define gmx_impl(msg) gmx_error("impl", msg)
201 #define gmx_incons(msg) gmx_error("incons", msg)
202 #define gmx_input(msg) gmx_error("input", msg)
203 #define gmx_mem(msg) gmx_error("mem", msg)
204 #define gmx_open(fn) gmx_error("open", fn)
208 * Implementation for range_check() and range_check_mesg().
210 * \p warn_str can be NULL.
212 void _range_check(int n, int n_min, int n_max, const char *warn_str,
214 const char *file, int line);
217 * Checks that a variable is within a range.
219 * If \p n is not in range [n_min, n_max), a fatal error is raised.
220 * \p n_min is inclusive, but \p n_max is not.
222 #define range_check_mesg(n, n_min, n_max, str) _range_check(n, n_min, n_max, str,#n, __FILE__, __LINE__)
225 * Checks that a variable is within a range.
227 * This works as range_check_mesg(), but with a default error message.
229 #define range_check(n, n_min, n_max) _range_check(n, n_min, n_max, NULL,#n, __FILE__, __LINE__)
232 * Prints a warning message to stderr.
234 * The format of \p fmt uses printf()-like formatting.
235 * The message string should NOT start with "WARNING"
236 * and should NOT end with a newline.
238 void gmx_warning(const char *fmt, ...);