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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"
51 #include "gromacs/utility/stringutil.h"
56 * Functions can write to this file for debug info.
57 * Before writing to it, it should be checked whether the file is not NULL:
61 fprintf(debug, "%s", "Debug text");
65 extern FILE* debug; //NOLINT(cppcoreguidelines-avoid-non-const-global-variables,-warnings-as-errors)
66 /** Whether extra debugging is enabled. */
67 extern gmx_bool gmx_debug_at; //NOLINT(cppcoreguidelines-avoid-non-const-global-variables,-warnings-as-errors)
70 * Initializes debugging variables.
72 * This function is not threadsafe. It should be called as part of
73 * initializing \Gromacs, before any other thread accesses the library.
74 * For command line programs, gmx::CommandLineModuleManager takes care
75 * of this if the user requests debugging.
77 void gmx_init_debug(int dbglevel, const char* dbgfile);
79 /** Returns TRUE when the program was started in debug mode */
80 gmx_bool bDebugMode();
82 /** Sets the log file for printing error messages. */
83 void 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 std::string& 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).
149 * This function is deprecated and no new calls should be made to it.
151 [[noreturn]] void gmx_fatal_mpi_va(int fatal_errno,
160 * Fatal error reporting routine for \Gromacs.
162 * This function prints a fatal error message with a header that contains the
163 * source file and line number of the call, followed by the string specified by
164 * \p fmt and supplied parameters.
165 * If \p fatal_errno is 0, only the message and arguments are printed.
166 * If \p fatal_errno is a legal system errno or -1, a perror()-like message is
167 * printed after the first message; if fatal_errno is -1, the last system errno
169 * The format of \p fmt uses printf()-like formatting.
171 * In case all MPI processes want to stop with the same fatal error,
172 * use gmx_fatal_collective(), declared in network.h,
173 * to avoid having as many error messages as processes.
175 * This function is deprecated and no new calls should be made to it.
177 * The first three parameters can be provided through ::FARGS:
179 gmx_fatal(FARGS, fmt, ...);
182 [[noreturn]] void gmx_fatal(int fatal_errno, const char* file, int line, gmx_fmtstr const char* fmt, ...)
183 gmx_format(printf, 4, 5);
184 /** Helper macro to pass first three parameters to gmx_fatal(). */
185 #define FARGS 0, __FILE__, __LINE__
187 /*! \brief Implementation for gmx_error().
189 * This function is deprecated and no new calls should be made to it. */
190 [[noreturn]] void gmx_error_function(const char* key, const std::string& msg, const char* file, int line);
192 * Alternative fatal error routine with canned messages.
194 * This works as gmx_fatal(), except that a generic error message is added
195 * based on a string key, and printf-style formatting is not supported.
196 * Should not typically be called directly, but through gmx_call() etc.
198 * This macro is deprecated and no new calls should be made to it.
200 #define gmx_error(key, msg) gmx_error_function(key, msg, __FILE__, __LINE__)
202 /*! \name Fatal error routines for certain types of errors
204 * These wrap gmx_error() and provide the \p key parameter as one of the
205 * recognized strings.
207 * These macros are deprecated and no new calls should be made to them.
210 #define gmx_call(msg) gmx_error("call", msg)
211 #define gmx_comm(msg) gmx_error("comm", msg)
212 #define gmx_file(msg) gmx_error("file", msg)
213 #define gmx_impl(msg) gmx_error("impl", msg)
214 #define gmx_incons(msg) gmx_error("incons", msg)
215 #define gmx_input(msg) gmx_error("input", msg)
216 #define gmx_mem(msg) gmx_error("mem", msg)
217 #define gmx_open(fn) gmx_error("open", fn)
221 * Implementation for range_check() and range_check_mesg().
223 * \p warn_str can be NULL.
225 void range_check_function(int n, int n_min, int n_max, const char* warn_str, const char* var, const char* file, int line);
228 * Checks that a variable is within a range.
230 * If \p n is not in range [n_min, n_max), a fatal error is raised.
231 * \p n_min is inclusive, but \p n_max is not.
233 #define range_check_mesg(n, n_min, n_max, str) \
234 range_check_function(n, n_min, n_max, str, #n, __FILE__, __LINE__)
237 * Checks that a variable is within a range.
239 * This works as range_check_mesg(), but with a default error message.
241 #define range_check(n, n_min, n_max) \
242 range_check_function(n, n_min, n_max, NULL, #n, __FILE__, __LINE__)
245 * Prints a warning message to stderr.
247 * The format of \p fmt uses printf()-like formatting.
248 * The message string should NOT start with "WARNING"
249 * and should NOT end with a newline.
251 void gmx_warning(gmx_fmtstr const char* fmt, ...) gmx_format(printf, 1, 2);