Make Waitall and Waitany visible from user side (and fix their prototype to stick...

[simgrid.git] / src / smpi / smpi_base.c

diff --git a/src/smpi/smpi_base.c b/src/smpi/smpi_base.c
index 6dbf4ff..1392ec6 100644 (file)
--- a/src/smpi/smpi_base.c
+++ b/src/smpi/smpi_base.c
@@ -34,7 +34,7 @@ void smpi_mpi_land_func(void *a, void *b, int *length,
 /**
  * sum two vectors element-wise
  *
- * @param a the first vectors 
+ * @param a the first vectors
  * @param b the second vectors
  * @return the second vector is modified and contains the element-wise sums
  **/
@@ -49,25 +49,22 @@ void smpi_mpi_sum_func(void *a, void *b, int *length, MPI_Datatype * datatype)
                                for (i = 0; i < *length; i++) {
                                          y[i] = x[i] + y[i];
                                }
-         } else {
-         if (*datatype == smpi_mpi_global->mpi_int) {
+         } else if (*datatype == smpi_mpi_global->mpi_int) {
                                int *x = a, *y = b;
                                for (i = 0; i < *length; i++) {
                                          y[i] = x[i] + y[i];
                                }
-         } else {
-         if (*datatype == smpi_mpi_global->mpi_float) {
+         } else if (*datatype == smpi_mpi_global->mpi_float) {
                                float *x = a, *y = b;
                                for (i = 0; i < *length; i++) {
                                          y[i] = x[i] + y[i];
                                }
-         } else {
-         if (*datatype == smpi_mpi_global->mpi_double) {
+         } else if (*datatype == smpi_mpi_global->mpi_double) {
                                double *x = a, *y = b;
                                for (i = 0; i < *length; i++) {
                                          y[i] = x[i] + y[i];
                                }
-         }}}}
+         }
 }
 /**
  * compute the min of two vectors element-wise
@@ -279,3 +276,60 @@ int smpi_mpi_wait(smpi_mpi_request_t request, smpi_mpi_status_t * status)
 
   return retval;
 }
+
+int smpi_mpi_waitall(int count, smpi_mpi_request_t requests[], smpi_mpi_status_t status[]) {
+       int cpt;
+       int index;
+       int retval;
+       smpi_mpi_status_t stat;
+
+       for (cpt=0; cpt<count;cpt++) {
+               retval = smpi_mpi_waitany(count,requests, &index,&stat);
+               if (retval != MPI_SUCCESS)
+                       return retval;
+               memcpy(&(status[index]),&stat,sizeof(stat));
+       }
+       return MPI_SUCCESS;
+}
+
+int smpi_mpi_waitany(int count, smpi_mpi_request_t *requests, int *index, smpi_mpi_status_t *status) {
+         int cpt;
+
+         *index = MPI_UNDEFINED;
+         if (NULL == requests) {
+           return MPI_ERR_INTERN;
+         }
+         /* First check if one of them is already done */
+         for (cpt=0;cpt<count;cpt++) {
+                 if (requests[cpt]->completed && !requests[cpt]->consumed) { /* got ya */
+                         *index=cpt;
+                         goto found_request;
+                 }
+         }
+         /* If none found, block */
+         /* FIXME: should use a SIMIX_cond_waitany, when implemented. For now, block on the first one */
+         while (1) {
+                 for (cpt=0;cpt<count;cpt++) {
+                         if (!requests[cpt]->completed) { /* this one is not done, wait on it */
+                                 while (!requests[cpt]->completed)
+                                     SIMIX_cond_wait(requests[cpt]->cond, requests[cpt]->mutex);
+
+                                 *index=cpt;
+                                 goto found_request;
+                         }
+                 }
+                 if (cpt == count) /* they are all done. Damn user */
+                         return MPI_ERR_REQUEST;
+         }
+
+         found_request:
+         requests[*index]->consumed = 1;
+
+          if (NULL != status) {
+             status->MPI_SOURCE = requests[*index]->src;
+             status->MPI_TAG = requests[*index]->tag;
+             status->MPI_ERROR = MPI_SUCCESS;
+           }
+         return MPI_SUCCESS;
+
+}