7
int Test_errorhandling (void);
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/* This is complicated by the fact that not all systems correctly
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implement stdargs (for the ...) declarations). MPICH uses USE_STDARG
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as the choice here, instead of the cases
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if defined(__STDC__) || defined(__cplusplus) || defined(HAVE_PROTOTYPES)
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#if defined(USE_STDARG)
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void handler_a( MPI_Comm *, int *, ...);
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void handler_b( MPI_Comm *, int *, ...);
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void error_handler(MPI_Comm *, int *, ...);
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void handler_a ( MPI_Comm *, int * );
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void handler_b ( MPI_Comm *, int * );
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void error_handler ( MPI_Comm *, int * );
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Test the error handers (based on a Fortran test program)
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int main( int argc, char **argv )
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MPI_Init( &argc, &argv );
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static int a_errors, b_errors;
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int Test_errorhandling( void )
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char errstring[MPI_MAX_ERROR_STRING];
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MPI_Comm dup_comm_world, dummy;
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MPI_Errhandler errhandler_a, errhandler_b, errhandler, old_handler;
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int err, world_rank, class, resultlen;
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logical test_default, test_abort
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MPI_Comm_rank( MPI_COMM_WORLD, &world_rank );
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MPI_Comm_dup( MPI_COMM_WORLD, &dup_comm_world );
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if (world_rank == 0 && verbose) {
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printf( "*** Error Handling ***\n" );
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Exercise save/restore of user error handlers.
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MPI_Errhandler_create(handler_a, &errhandler_a);
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MPI_Errhandler_set(dup_comm_world, errhandler_a);
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MPI_Errhandler_free(&errhandler_a);
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if (verbose) printf( "create with null group 1\n" );
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MPI_Comm_create(dup_comm_world, MPI_GROUP_NULL, &dummy);
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Test_Failed( " error handler A not invoked\n" );
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MPI_Errhandler_create(handler_b, &errhandler_b);
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MPI_Errhandler_get(dup_comm_world, &old_handler);
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/* The following is needed to preserve an old handler */
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MPI_Comm_dup( MPI_COMM_SELF, &tempcomm );
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MPI_Errhandler_set( tempcomm, old_handler );
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MPI_Errhandler_set(dup_comm_world, errhandler_b);
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MPI_Errhandler_free(&errhandler_b);
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if (verbose) printf( "create with null group 2\n" );
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MPI_Comm_create(dup_comm_world, MPI_GROUP_NULL, &dummy);
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Test_Failed( " error handler B not invoked\n" );
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MPI_Errhandler_set(dup_comm_world, old_handler);
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MPI_Comm_free( &tempcomm );
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/* MPI_Errhandler_free(&old_handler); */
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if (verbose) printf( "create with null group 3\n" );
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MPI_Comm_create(dup_comm_world, MPI_GROUP_NULL, &dummy);
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Test_Failed( " error handler A not re-invoked\n" );
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Exercise class & string interrogation.
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MPI_Errhandler_set(dup_comm_world, MPI_ERRORS_ARE_FATAL);
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printf( " Three error messages (from two errors) are expected\n\
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which should both show an error class of %d\n", MPI_ERR_GROUP );
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MPI_Errhandler_set(dup_comm_world, MPI_ERRORS_RETURN);
107
if (verbose) printf( "create with null group 4\n" );
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err = MPI_Comm_create(dup_comm_world, MPI_GROUP_NULL, &dummy);
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if (err != MPI_SUCCESS) {
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MPI_Error_class(err, &class);
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MPI_Error_string(err, errstring, &resultlen);
113
printf( "(first) %d : %s\n", class, errstring );
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else if (class != MPI_ERR_GROUP) {
115
Test_Failed( "(first) Class is not MPI_ERR_GROUP\n" );
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MPI_Comm_free( &dummy );
121
Test_Failed( "Did not detect error when building communicator\n" );
124
MPI_Errhandler_create(error_handler, &errhandler);
125
MPI_Errhandler_set(dup_comm_world, errhandler);
126
MPI_Errhandler_free(&errhandler);
127
if (verbose) printf( "create with null group 5\n" );
128
err = MPI_Comm_create(dup_comm_world, MPI_GROUP_NULL, &dummy);
129
if (err != MPI_SUCCESS) {
130
MPI_Error_class(err, &class);
131
MPI_Error_string(err, errstring, &resultlen);
133
printf( "(second) %d : %s\n", class, errstring );
134
else if (class != MPI_ERR_GROUP) {
135
Test_Failed( "(second) class was not MPI_ERR_GROUP" );
140
MPI_Comm_free( &dummy );
141
Test_Failed( "Did not detect error in building communicator\n" );
144
MPI_Errhandler_set(dup_comm_world, MPI_ERRORS_ARE_FATAL);
148
printf("Forcing error for default handler...\n");
149
MPI_Comm_create(dup_comm_world, MPI_GROUP_NULL, &dummy);
152
printf( "Calling MPI_Abort...\n" );
153
MPI_Abort(MPI_COMM_WORLD, 123456768);
157
MPI_Comm_free( &dup_comm_world );
160
errs = global_errors;
161
MPI_Allreduce( &errs, &toterrs, 1, MPI_INT, MPI_SUM, MPI_COMM_WORLD );
162
if (world_rank == 0) {
164
printf( " No Errors\n" );
166
printf( " Found %d errors\n", toterrs );
175
Trivial error handler. Note that FORTRAN error handlers can't
176
deal with the varargs stuff the C handlers can.
179
#if defined(USE_STDARG)
180
void error_handler(MPI_Comm *comm, int *err, ...)
182
void error_handler(MPI_Comm *comm, int *err)
187
char string[MPI_MAX_ERROR_STRING];
189
MPI_Error_class(*err, &class);
190
MPI_Error_string(*err, string, &resultlen);
192
printf( "(errhandler) %d : %s\n", class, string );
194
if (class != MPI_ERR_GROUP) {
195
printf( "(errhandler) class = %d, expected %d (MPI_ERR_GROUP)\n",
196
class, MPI_ERR_GROUP );
197
printf( " message %s\n", string );
203
Error handler A, used for save/restore testing.
206
#if defined(USE_STDARG)
207
void handler_a( MPI_Comm *comm, int *err, ...)
209
void handler_a(MPI_Comm *comm, int err)
214
MPI_Error_class(*err, &class);
215
if (class != MPI_ERR_GROUP) {
216
printf( "handler_a: incorrect error class %d\n", class );
223
Error handler B, used for save/restore testing.
226
#if defined(USE_STDARG)
227
void handler_b(MPI_Comm *comm, int *err, ...)
229
void handler_b(comm, err)
236
MPI_Error_class(*err, &class);
237
if (class != MPI_ERR_GROUP) {
238
printf( "handler_b: incorrect error class %d\n", class );