* implement iprobe for the MX MTL

This commit was SVN r11211.

ompi/mca/mtl/mx/mtl_mx_probe.c

@@ -17,16 +17,55 @@
  */
 
 #include "ompi_config.h"
+
 #include "ompi/request/request.h"
+#include "ompi/communicator/communicator.h"
+
 #include "mtl_mx.h"
+#include "mtl_mx_types.h"
+#include "mtl_mx_request.h"
 
 
-int ompi_mtl_mx_iprobe(struct mca_mtl_base_module_t* mtl, 
-                              struct ompi_communicator_t *comm,
-                              int src,
-                              int tag,
-                              int *flag,
-                              struct ompi_status_public_t *status)
+int
+ompi_mtl_mx_iprobe(struct mca_mtl_base_module_t* mtl, 
+                   struct ompi_communicator_t *comm,
+                   int src,
+                   int tag,
+                   int *flag,
+                   struct ompi_status_public_t *status)
 {
-    return OMPI_ERR_NOT_IMPLEMENTED;
+    uint32_t result;
+    mx_return_t ret;
+    mx_status_t mx_status;
+    uint64_t match_bits;
+    uint64_t mask_bits;
+
+    MX_SET_RECV_BITS(match_bits, 
+                     mask_bits,
+                     comm->c_contextid,
+                     src,
+                     tag);
+
+    ret = mx_iprobe(ompi_mtl_mx.mx_endpoint,
+                    match_bits,
+                    mask_bits,
+                    &mx_status,
+                    &result);
+    if (MX_SUCCESS != ret) {
+        opal_output(0, "Error in mx_iprobe (error %s)\n", mx_strerror(ret));
+        return OMPI_ERROR;
+    }
+
+    if (result) {
+        status->MPI_ERROR = OMPI_SUCCESS;
+        MX_GET_SRC(mx_status.match_info, status->MPI_SOURCE);
+        MX_GET_TAG(mx_status.match_info, status->MPI_TAG); 
+        status->_count = mx_status.msg_length;
+
+        *flag = 1;
+    } else {
+        *flag = 0;
+    }
+
+    return OMPI_SUCCESS;
 }