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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
/* A test that MPI_T string handling is working as expected. Necessarily a weak
* test, since we can't assume any particular variables are exposed by the
* implementation. */
#include "mpi.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <math.h>
#include <limits.h>
#include "mpitest.h"
/* assert-like macro that bumps the err count and emits a message */
#define check(x_) \
do { \
if (!(x_)) { \
++errs; \
if (errs < 10) { \
fprintf(stderr, "check failed: (%s), line %d\n", #x_, __LINE__); \
} \
} \
} while (0)
/* the usual multiple-evaluation caveats apply to this routine */
#define min(a,b) ((a) < (b) ? (a) : (b))
int main(int argc, char **argv)
{
int errs = 0;
int i, j;
int rank, size;
int num_pvars, num_cvars, num_cat;
#define STR_SZ (50)
int name_len;
char name[STR_SZ + 1] = ""; /* +1 to check for overrun */
int desc_len;
char desc[STR_SZ + 1] = ""; /* +1 to check for overrun */
int verb;
int bind;
int scope;
int provided;
MTest_Init(&argc, &argv);
MPI_T_init_thread(MPI_THREAD_SINGLE, &provided);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
MPI_Comm_size(MPI_COMM_WORLD, &size);
/* loop over all cvars and ask for string arguments with various valid
* combinations of NULL and non-NULL to ensure that the library handles this
* case correctly */
MPI_T_cvar_get_num(&num_cvars);
for (i = 0; i < num_cvars; ++i) {
int full_name_len, full_desc_len;
MPI_Datatype dtype;
/* Init'ed to a garbage value, to trigger MPI_T bugs easily if there are. */
MPI_T_enum enumtype = (MPI_T_enum) 0x31415926;
/* pass NULL string, non-zero lengths; should get full lengths */
full_name_len = full_desc_len = 1;
MPI_T_cvar_get_info(i, NULL, &full_name_len, &verb, &dtype,
&enumtype, NULL, &full_desc_len, &bind, &scope);
check(full_name_len >= 0);
check(full_desc_len >= 0);
/* pass non-NULL string, zero lengths; should get full lengths also */
name_len = desc_len = 0;
MPI_T_cvar_get_info(i, name, &name_len, &verb, &dtype,
&enumtype, desc, &desc_len, &bind, &scope);
check(full_name_len == name_len);
check(full_desc_len == desc_len);
/* regular call, no NULLs; should truncate (with termination) to STR_SZ
* if necessary, otherwise returns strlen+1 in the corresponding "_len"
* var */
name_len = desc_len = STR_SZ;
MPI_T_cvar_get_info(i, name, &name_len, &verb, &dtype,
&enumtype, desc, &desc_len, &bind, &scope);
check((strlen(name) + 1) == min(name_len, STR_SZ));
check((strlen(desc) + 1) == min(desc_len, STR_SZ));
/* pass NULL lengths, string buffers should be left alone */
for (j = 0; j < STR_SZ; ++j) {
name[j] = j % CHAR_MAX;
desc[j] = j % CHAR_MAX;
}
MPI_T_cvar_get_info(i, name, /*name_len= */ NULL, &verb, &dtype,
&enumtype, desc, /*desc_len= */ NULL, &bind, &scope);
for (j = 0; j < STR_SZ; ++j) {
check(name[j] == j % CHAR_MAX);
check(desc[j] == j % CHAR_MAX);
}
/* not much of a string test, just need a quick spot to stick a test for
* the existence of the correct MPI_T prototype (tt#1727) */
/* Include test that enumtype is defined */
if (dtype == MPI_INT && enumtype != MPI_T_ENUM_NULL) {
int num_enumtype = -1;
name_len = STR_SZ;
MPI_T_enum_get_info(enumtype, &num_enumtype, name, &name_len);
check(num_enumtype >= 0);
}
}
/* check string handling for performance variables */
MPI_T_pvar_get_num(&num_pvars);
for (i = 0; i < num_pvars; ++i) {
int varclass, readonly, continuous, atomic;
MPI_Datatype dtype;
MPI_T_enum enumtype;
int full_name_len, full_desc_len;
/* pass NULL string, non-zero lengths; should get full lengths */
full_name_len = full_desc_len = 1;
MPI_T_pvar_get_info(i, NULL, &full_name_len, &verb, &varclass, &dtype,
&enumtype, NULL, &full_desc_len, &bind, &readonly,
&continuous, &atomic);
check(full_name_len >= 0);
check(full_desc_len >= 0);
/* pass non-NULL string, zero lengths; should get full lengths also */
name_len = desc_len = 0;
MPI_T_pvar_get_info(i, name, &name_len, &verb, &varclass, &dtype,
&enumtype, desc, &desc_len, &bind, &readonly, &continuous, &atomic);
check(full_name_len == name_len);
check(full_desc_len == desc_len);
/* regular call, no NULLs; should truncate (with termination) to STR_SZ
* if necessary, otherwise returns strlen+1 in the corresponding "_len"
* var */
name[STR_SZ] = (char) 'Z';
desc[STR_SZ] = (char) 'Z';
name_len = desc_len = STR_SZ;
MPI_T_pvar_get_info(i, name, &name_len, &verb, &varclass, &dtype,
&enumtype, desc, &desc_len, &bind, &readonly, &continuous, &atomic);
check((strlen(name) + 1) == min(name_len, STR_SZ));
check((strlen(desc) + 1) == min(desc_len, STR_SZ));
check(name[STR_SZ] == (char) 'Z');
check(desc[STR_SZ] == (char) 'Z');
/* pass NULL lengths, string buffers should be left alone */
for (j = 0; j < STR_SZ; ++j) {
name[j] = j % CHAR_MAX;
desc[j] = j % CHAR_MAX;
}
MPI_T_pvar_get_info(i, name, /*name_len= */ NULL, &verb, &varclass, &dtype,
&enumtype, desc, /*desc_len= */ NULL, &bind, &readonly,
&continuous, &atomic);
for (j = 0; j < STR_SZ; ++j) {
check(name[j] == j % CHAR_MAX);
check(desc[j] == j % CHAR_MAX);
}
}
/* check string handling for categories */
MPI_T_category_get_num(&num_cat);
for (i = 0; i < num_cat; ++i) {
int full_name_len, full_desc_len;
/* pass NULL string, non-zero lengths; should get full lengths */
full_name_len = full_desc_len = 1;
MPI_T_category_get_info(i, NULL, &full_name_len, NULL, &full_desc_len,
&num_cvars, &num_pvars, /*num_categories= */ &j);
check(full_name_len >= 0);
check(full_desc_len >= 0);
/* pass non-NULL string, zero lengths; should get full lengths also */
name_len = desc_len = 0;
MPI_T_category_get_info(i, name, &name_len, desc, &desc_len,
&num_cvars, &num_pvars, /*num_categories= */ &j);
check(full_name_len == name_len);
check(full_desc_len == desc_len);
/* regular call, no NULLs; should truncate (with termination) to STR_SZ
* if necessary, otherwise returns strlen+1 in the corresponding "_len"
* var */
name[STR_SZ] = (char) 'Z';
desc[STR_SZ] = (char) 'Z';
name_len = desc_len = STR_SZ;
MPI_T_category_get_info(i, name, &name_len, desc, &desc_len,
&num_cvars, &num_pvars, /*num_categories= */ &j);
check((strlen(name) + 1) == min(name_len, STR_SZ));
check((strlen(desc) + 1) == min(desc_len, STR_SZ));
check(name[STR_SZ] == (char) 'Z');
check(desc[STR_SZ] == (char) 'Z');
/* pass NULL lengths, string buffers should be left alone */
for (j = 0; j < STR_SZ; ++j) {
name[j] = j % CHAR_MAX;
desc[j] = j % CHAR_MAX;
}
MPI_T_category_get_info(i, name, /*name_len= */ NULL, desc,
/*desc_len= */ NULL, &num_cvars, &num_pvars,
/*num_categories= */ &j);
for (j = 0; j < STR_SZ; ++j) {
check(name[j] == j % CHAR_MAX);
check(desc[j] == j % CHAR_MAX);
}
/* not really a string test, just need a quick spot to stick a test for the
* existence of the correct MPI_T prototype (tt#1727) */
{
int indices[1];
MPI_T_category_get_pvars(i, 1, indices);
}
}
MPI_T_finalize();
MTest_Finalize(errs);
return MTestReturnValue(errs);
}
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