Fix compilation of the MPI tools information interface when profiling

is enabled and fix a bug in the handling of watermark performance
variables.

cmr=v1.7.3:ticket=trac:3725:reviewer=jsquyres

This commit was SVN r29068.

The following Trac tickets were found above:
  Ticket 3725 --> https://svn.open-mpi.org/trac/ompi/ticket/3725

ompi/Makefile.am

@@ -134,6 +134,7 @@ libmpi_la_LIBADD = \
         datatype/libdatatype.la \
         debuggers/libdebuggers.la \
         mpi/c/libmpi_c.la \
+        mpi/tool/libmpi_mpit_common.la \
         $(c_mpi_lib) \
         $(c_pmpi_lib) \
         $(mpi_fortran_base_lib) \
@@ -141,11 +142,6 @@ libmpi_la_LIBADD = \
         $(OMPI_MPIEXT_C_LIBS) \
         $(OMPI_LIBMPI_EXTRA_LIBS)
 
-if WANT_MPI_PROFILING
-libmpi_la_LIBADD += \
-        mpi/tool/libmpi_mpit.la
-endif
-
 
 if OMPI_RTE_ORTE
 libmpi_la_LIBADD += \

ompi/mpi/tool/Makefile.am

@@ -17,10 +17,16 @@ SUBDIRS = profile
 
 AM_CPPFLAGS = -DOMPI_PROFILING_DEFINES=0
 
-noinst_LTLIBRARIES = libmpi_mpit.la
+noinst_LTLIBRARIES = libmpi_mpit_common.la
+
+if BUILD_MPI_BINDINGS_LAYER
+noinst_LTLIBRARIES += libmpi_mpit.la
+endif
 
 headers = mpit-internal.h
 
+libmpi_mpit_common_la_SOURCES = mpit_common.c
+
 libmpi_mpit_la_SOURCES = init_thread.c finalize.c cvar_get_num.c \
 		     cvar_get_info.c cvar_read.c cvar_write.c \
                      cvar_handle_alloc.c cvar_handle_free.c \
@@ -31,7 +37,7 @@ libmpi_mpit_la_SOURCES = init_thread.c finalize.c cvar_get_num.c \
                      pvar_handle_free.c pvar_read.c pvar_readreset.c \
                      pvar_reset.c pvar_session_create.c pvar_session_free.c \
                      pvar_start.c pvar_stop.c pvar_write.c \
-                     enum_get_info.c enum_get_item.c mpit_common.c
+                     enum_get_info.c enum_get_item.c
 
 # Conditionally install the header files
 

opal/mca/base/mca_base_pvar.c

@@ -473,25 +473,16 @@ int mca_base_pvar_handle_alloc (mca_base_pvar_session_t *session, int index, voi
                 ret = OPAL_ERR_OUT_OF_RESOURCE;
                 break;
             }
+        }
 
+        if (!mca_base_pvar_is_continuous (pvar) || mca_base_pvar_is_sum (pvar) ||
+            mca_base_pvar_is_watermark (pvar)) {
             pvar_handle->tmp_value = calloc (*count, datatype_size);
             if (NULL == pvar_handle->tmp_value) {
                 ret = OPAL_ERR_OUT_OF_RESOURCE;
                 break;
             }
        
-            /* get the current value of the performance variable if this is a
-               continuous sum. if this variable needs to be started first the
-               current value is not relevant. */
-            if (mca_base_pvar_is_continuous (pvar)) {
-                ret = pvar->get_value (pvar, pvar_handle->last_value, pvar_handle->obj_handle);
-                if (OPAL_SUCCESS != ret) {
-                    return ret;
-                }
-            }
-        }
-
-        if (!mca_base_pvar_is_continuous (pvar) || mca_base_pvar_is_sum (pvar)) {
             /* if a variable is not continuous we will need to keep track of its last value
                to support start->stop->read correctly. use calloc to initialize the current
                value to 0. */
@@ -502,6 +493,23 @@ int mca_base_pvar_handle_alloc (mca_base_pvar_session_t *session, int index, voi
             }
         }
 
+        /* get the current value of the performance variable if this is a
+           continuous sum or watermark. if this variable needs to be started first the
+           current value is not relevant. */
+        if (mca_base_pvar_is_continuous (pvar) && (mca_base_pvar_is_sum (pvar) || mca_base_pvar_is_sum (pvar))) {
+            if (mca_base_pvar_is_sum (pvar)) {
+                /* the initial value of a sum is 0 */
+                ret = pvar->get_value (pvar, pvar_handle->last_value, pvar_handle->obj_handle);
+            } else {
+                /* the initial value of a watermark is the current value of the variable */
+                ret = pvar->get_value (pvar, pvar_handle->current_value, pvar_handle->obj_handle);
+            }
+
+            if (OPAL_SUCCESS != ret) {
+                return ret;
+            }
+        }
+
         pvar_handle->session = session;
 
         /* the handle is ready. add it to the appropriate lists */