Add some tests for io.

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

diff --git a/teshsuite/smpi/io-all/io-all.c b/teshsuite/smpi/io-all/io-all.c
new file mode 100644 (file)
index 0000000..56d95b3
--- /dev/null
+++ b/teshsuite/smpi/io-all/io-all.c
@@ -0,0 +1,74 @@
+#include "mpi.h"\r
+#include <stdio.h>\r
+#include <stdlib.h>\r
+#include <string.h>\r
+#include <memory.h>\r
+\r
+/* Test reading and writing zero bytes (set status correctly) */\r
+\r
+int main( int argc, char *argv[] )\r
+{\r
+    int errs = 0;\r
+    int size, rank, i, *buf, count;\r
+    MPI_File fh;\r
+    MPI_Comm comm;\r
+    MPI_Status status;\r
+ \r
+    MPI_Init( &argc, &argv );\r
+ \r
+    comm = MPI_COMM_WORLD;\r
+    MPI_File_open( comm, (char*)"/scratch/lib/libsimgrid.so.3.6.2", MPI_MODE_RDWR | MPI_MODE_CREATE | MPI_MODE_DELETE_ON_CLOSE, MPI_INFO_NULL, &fh );\r
+    MPI_Comm_size( comm, &size );\r
+    MPI_Comm_rank( comm, &rank );\r
+    buf = (int *)malloc( 10+ size * sizeof(int) );\r
+    buf[0] = rank;\r
+ \r
+    /* Write to file */\r
+    MPI_File_seek( fh, sizeof(int)*rank, MPI_SEEK_SET ); \r
+    MPI_File_write_all( fh, buf, 1, MPI_INT, &status );\r
+    MPI_Get_count( &status, MPI_INT, &count );\r
+    if (count != 1) {\r
+        errs++;\r
+        fprintf( stderr, "Wrong count (%d) on write\n", count );fflush(stderr);\r
+    }\r
+    /* Write to file, overlapping */\r
+    MPI_File_seek( fh, sizeof(int)*rank, MPI_SEEK_SET ); \r
+    MPI_File_write_all( fh, buf, 10, MPI_INT, &status );\r
+    MPI_Get_count( &status, MPI_INT, &count );\r
+    if (count != 10) {\r
+        errs++;\r
+        fprintf( stderr, "Wrong count (%d) on write\n", count );fflush(stderr);\r
+    }\r
+    /* Read nothing (check status) */\r
+    memset( &status, 0xff, sizeof(MPI_Status) );\r
+    MPI_File_read_all( fh, buf, 0, MPI_INT, &status );\r
+    MPI_Get_count( &status, MPI_INT, &count );\r
+    if (count != 0) {\r
+        errs++;\r
+        fprintf( stderr, "Count not zero (%d) on read\n", count );fflush(stderr);\r
+    }\r
+\r
+    /* Write nothing (check status) */\r
+    memset( &status, 0xff, sizeof(MPI_Status) );\r
+    MPI_File_write_all( fh, buf, 0, MPI_INT, &status );\r
+    if (count != 0) {\r
+        errs++;\r
+        fprintf( stderr, "Count not zero (%d) on write\n", count );fflush(stderr);\r
+    }\r
+\r
+    MPI_Barrier( comm );\r
+\r
+    MPI_File_seek( fh, sizeof(int)*rank, MPI_SEEK_SET );\r
+    for (i=0; i<size; i++) buf[i] = -1;\r
+    MPI_File_read_all( fh, buf, 10, MPI_INT, &status );\r
+    // if (buf[0] != rank) {\r
+        // errs++;\r
+        // fprintf( stderr, "%d: buf = %d\n", rank, buf[0] );fflush(stderr);\r
+    // }\r
+ \r
+    free( buf );\r
+    MPI_File_close( &fh );\r
+ \r
+    MPI_Finalize();\r
+    return errs;\r
+}
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