forgot to push test for write_at_all and read_at_all

[simgrid.git] / teshsuite / smpi / io-all-at / io-all-at.c

diff --git a/teshsuite/smpi/io-all-at/io-all-at.c b/teshsuite/smpi/io-all-at/io-all-at.c
new file mode 100644 (file)
index 0000000..3c2963b
--- /dev/null
+++ b/teshsuite/smpi/io-all-at/io-all-at.c
@@ -0,0 +1,76 @@
+#include "mpi.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <memory.h>
+
+/* Test reading and writing zero bytes (set status correctly) */
+
+int main( int argc, char *argv[] )
+{
+    int errs = 0;
+    int size;
+    int rank;
+    int i;
+    int* buf;
+    int count;
+    MPI_File fh;
+    MPI_Comm comm;
+    MPI_Status status;
+ 
+    MPI_Init( &argc, &argv );
+ 
+    comm = MPI_COMM_WORLD;
+    MPI_File_open( comm, (char*)"/scratch/testfile", MPI_MODE_RDWR | MPI_MODE_CREATE | MPI_MODE_DELETE_ON_CLOSE, MPI_INFO_NULL, &fh );
+    MPI_Comm_size( comm, &size );
+    MPI_Comm_rank( comm, &rank );
+    buf = (int *)malloc( 10 * sizeof(int) );
+    buf[0] = rank;
+ 
+    /* Write to file */
+    MPI_File_seek( fh, sizeof(int)*rank, MPI_SEEK_SET ); 
+    MPI_File_write_all( fh, buf, 1, MPI_INT, &status );
+    MPI_Get_count( &status, MPI_INT, &count );
+    if (count != 1) {
+        errs++;
+        fprintf( stderr, "Wrong count (%d) on write\n", count );fflush(stderr);
+    }
+    /* Write to file, overlapping */
+    MPI_File_write_at_all( fh, sizeof(int)*rank, buf, 10, MPI_INT, &status );
+    MPI_Get_count( &status, MPI_INT, &count );
+    if (count != 10) {
+        errs++;
+        fprintf( stderr, "Wrong count (%d) on write\n", count );fflush(stderr);
+    }
+    /* Read nothing (check status) */
+    memset( &status, 0xff, sizeof(MPI_Status) );
+    MPI_File_read_at_all( fh, 0, buf, 0, MPI_INT, &status );
+    MPI_Get_count( &status, MPI_INT, &count );
+    if (count != 0) {
+        errs++;
+        fprintf( stderr, "Count not zero (%d) on read\n", count );fflush(stderr);
+    }
+
+    /* Write nothing (check status) */
+    memset( &status, 0xff, sizeof(MPI_Status) );
+    MPI_File_write_at_all( fh, 0, buf, 0, MPI_INT, &status );
+    if (count != 0) {
+        errs++;
+        fprintf( stderr, "Count not zero (%d) on write\n", count );fflush(stderr);
+    }
+
+    MPI_Barrier( comm );
+
+    for (i=0; i<size; i++) buf[i] = -1;
+    MPI_File_read_at_all( fh, sizeof(int)*rank, buf, 10, MPI_INT, &status );
+    // if (buf[0] != rank) {
+        // errs++;
+        // fprintf( stderr, "%d: buf = %d\n", rank, buf[0] );fflush(stderr);
+    // }
+ 
+    free( buf );
+    MPI_File_close( &fh );
+ 
+    MPI_Finalize();
+    return errs;
+}