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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(const int dbglevel, const char *dbgfile);
82 /** Returns TRUE when the program was started in debug mode */
83 gmx_bool bDebugMode(void);
85 /** Implementation for where(). */
87 _where(const char *file, int line);
88 /** Prints filename and line to stdlog. */
89 #define where() _where(__FILE__, __LINE__)
91 /** Sets the log file for printing error messages. */
93 gmx_fatal_set_log_file(FILE *fp);
96 * Sets an error handler for gmx_fatal() and other fatal error routines.
98 * The default handler prints the message.
99 * \Gromacs will terminate the program after the error handler returns.
100 * To make gmx_fatal_collective() work, the error handler should not terminate
101 * the program, as it cannot know what is the desired way of termination.
102 * The string passed to the handler may be a multi-line string.
107 set_gmx_error_handler(void (*func)(const char *msg));
110 * Low-level fatal error reporting routine for collective MPI errors.
112 * This function works as gmx_fatal(), but provides additional control for
113 * cases where it is known that the same error occurs on multiple MPI ranks.
114 * The error handler is called only if \p bMaster is `TRUE`, and MPI_Finalize()
115 * is called instead of MPI_Abort() in MPI-enabled \Gromacs if \p bFinalize is
118 * This is used to implement gmx_fatal_collective() (which cannot be declared
119 * here, since it would bring with it mdrun-specific dependencies).
122 gmx_fatal_mpi_va(int fatal_errno, const char *file, int line, gmx_bool bMaster,
123 gmx_bool bFinalize, const char *fmt, va_list ap);
126 * Fatal error reporting routine for \Gromacs.
128 * This function prints a fatal error message with a header that contains the
129 * source file and line number of the call, followed by the string specified by
130 * \p fmt and supplied parameters.
131 * If \p fatal_errno is 0, only the message and arguments are printed.
132 * If \p fatal_errno is a legal system errno or -1, a perror()-like message is
133 * printed after the first message; if fatal_errno is -1, the last system errno
135 * The format of \p fmt uses printf()-like formatting.
137 * In case all MPI processes want to stop with the same fatal error,
138 * use gmx_fatal_collective(), declared in network.h,
139 * to avoid having as many error messages as processes.
141 * The first three parameters can be provided through ::FARGS:
143 gmx_fatal(FARGS, fmt, ...);
147 gmx_fatal(int fatal_errno, const char *file, int line, const char *fmt, ...);
148 /** Helper macro to pass first three parameters to gmx_fatal(). */
149 #define FARGS 0, __FILE__, __LINE__
152 * Returns error message corresponding to a string key.
154 * This maps the strings used by gmx_error() to actual error messages.
155 * Caller is responsible of freeing the returned string.
157 char *gmx_strerror(const char *key);
159 /** Implementation for gmx_error(). */
160 gmx_noreturn void _gmx_error(const char *key, const char *msg, const char *file, int line);
162 * Alternative fatal error routine with canned messages.
164 * This works as gmx_fatal(), except that a generic error message is added
165 * based on a string key, and printf-style formatting is not supported.
166 * Should not typically be called directly, but through gmx_bug(), gmx_call()
169 #define gmx_error(key, msg) _gmx_error(key, msg, __FILE__, __LINE__)
171 /*! \name Fatal error routines for certain types of errors
173 * These wrap gmx_error() and provide the \p key parameter as one of the
174 * recognized strings.
177 #define gmx_bug(msg) gmx_error("bug", msg)
178 #define gmx_call(msg) gmx_error("call", msg)
179 #define gmx_comm(msg) gmx_error("comm", msg)
180 #define gmx_file(msg) gmx_error("file", msg)
181 #define gmx_cmd(msg) gmx_error("cmd", msg)
182 #define gmx_impl(msg) gmx_error("impl", msg)
183 #define gmx_incons(msg) gmx_error("incons", msg)
184 #define gmx_input(msg) gmx_error("input", msg)
185 #define gmx_mem(msg) gmx_error("mem", msg)
186 #define gmx_open(fn) gmx_error("open", fn)
190 * Implementation for range_check() and range_check_mesg().
192 * \p warn_str can be NULL.
194 void _range_check(int n, int n_min, int n_max, const char *warn_str,
196 const char *file, int line);
199 * Checks that a variable is within a range.
201 * If \p n is not in range [n_min, n_max), a fatal error is raised.
202 * \p n_min is inclusive, but \p n_max is not.
204 #define range_check_mesg(n, n_min, n_max, str) _range_check(n, n_min, n_max, str,#n, __FILE__, __LINE__)
207 * Checks that a variable is within a range.
209 * This works as range_check_mesg(), but with a default error message.
211 #define range_check(n, n_min, n_max) _range_check(n, n_min, n_max, NULL,#n, __FILE__, __LINE__)
214 * Prints a warning message to stderr.
216 * The format of \p fmt uses printf()-like formatting.
217 * The message string should NOT start with "WARNING"
218 * and should NOT end with a newline.
220 void gmx_warning(const char *fmt, ...);