Completed request was already nulled in Request::waitany. Use the right index.

[simgrid.git] / src / smpi / bindings / smpi_pmpi_request.cpp

diff --git a/src/smpi/bindings/smpi_pmpi_request.cpp b/src/smpi/bindings/smpi_pmpi_request.cpp
index c47791c..b2192d9 100644 (file)
--- a/src/smpi/bindings/smpi_pmpi_request.cpp
+++ b/src/smpi/bindings/smpi_pmpi_request.cpp
@@ -89,6 +89,11 @@ int PMPI_Ssend_init(void* buf, int count, MPI_Datatype datatype, int dst, int ta
   return retval;
 }
 
+/*
+ * This function starts a request returned by init functions such as
+ * MPI_Send_init(), MPI_Ssend_init (see above), and friends.
+ * They should already have performed sanity checks.
+ */
 int PMPI_Start(MPI_Request * request)
 {
   int retval = 0;
@@ -97,8 +102,22 @@ int PMPI_Start(MPI_Request * request)
   if (request == nullptr || *request == MPI_REQUEST_NULL) {
     retval = MPI_ERR_REQUEST;
   } else {
-    (*request)->start();
+    MPI_Request req = *request;
+    int my_proc_id = (req->comm() != MPI_COMM_NULL) ? simgrid::s4u::this_actor::get_pid() : -1;
+    TRACE_smpi_comm_in(my_proc_id, __func__,
+                       new simgrid::instr::Pt2PtTIData("Start", req->dst(),
+                                                       req->size(),
+                                                       req->tag(), 
+                                                       simgrid::smpi::Datatype::encode(req->type())));
+    if (not TRACE_smpi_view_internals() && req->flags() & MPI_REQ_SEND)
+      TRACE_smpi_send(my_proc_id, my_proc_id, getPid(req->comm(), req->dst()), req->tag(), req->size());
+
+    req->start();
+
+    if (not TRACE_smpi_view_internals() && req->flags() & MPI_REQ_RECV)
+      TRACE_smpi_recv(getPid(req->comm(), req->src()), my_proc_id, req->tag());
     retval = MPI_SUCCESS;
+    TRACE_smpi_comm_out(my_proc_id);
   }
   smpi_bench_begin();
   return retval;
@@ -118,7 +137,25 @@ int PMPI_Startall(int count, MPI_Request * requests)
       }
     }
     if(retval != MPI_ERR_REQUEST) {
+      int my_proc_id = simgrid::s4u::this_actor::get_pid();
+      TRACE_smpi_comm_in(my_proc_id, __func__, new simgrid::instr::NoOpTIData("Startall"));
+      MPI_Request req = MPI_REQUEST_NULL;
+      if (not TRACE_smpi_view_internals())
+        for (int i = 0; i < count; i++) {
+          req = requests[i];
+          if (req->flags() & MPI_REQ_SEND)
+            TRACE_smpi_send(my_proc_id, my_proc_id, getPid(req->comm(), req->dst()), req->tag(), req->size());
+        }
+
       simgrid::smpi::Request::startall(count, requests);
+
+      if (not TRACE_smpi_view_internals())
+        for (int i = 0; i < count; i++) {
+          req = requests[i];
+          if (req->flags() & MPI_REQ_RECV)
+            TRACE_smpi_recv(getPid(req->comm(), req->src()), my_proc_id, req->tag());
+        }
+      TRACE_smpi_comm_out(my_proc_id);
     }
   }
   smpi_bench_begin();
@@ -163,7 +200,7 @@ int PMPI_Irecv(void *buf, int count, MPI_Datatype datatype, int src, int tag, MP
     retval = MPI_ERR_TAG;
   } else {
 
-    int my_proc_id = simgrid::s4u::this_actor::getPid();
+    int my_proc_id = simgrid::s4u::this_actor::get_pid();
 
     TRACE_smpi_comm_in(my_proc_id, __func__,
                        new simgrid::instr::Pt2PtTIData("Irecv", src,
@@ -204,7 +241,7 @@ int PMPI_Isend(void *buf, int count, MPI_Datatype datatype, int dst, int tag, MP
   } else if(tag<0 && tag !=  MPI_ANY_TAG){
     retval = MPI_ERR_TAG;
   } else {
-    int my_proc_id = simgrid::s4u::this_actor::getPid();
+    int my_proc_id = simgrid::s4u::this_actor::get_pid();
     int trace_dst = getPid(comm, dst);
     TRACE_smpi_comm_in(my_proc_id, __func__,
                        new simgrid::instr::Pt2PtTIData("Isend", dst,
@@ -246,7 +283,7 @@ int PMPI_Issend(void* buf, int count, MPI_Datatype datatype, int dst, int tag, M
   } else if(tag<0 && tag !=  MPI_ANY_TAG){
     retval = MPI_ERR_TAG;
   } else {
-    int my_proc_id = simgrid::s4u::this_actor::getPid();
+    int my_proc_id = simgrid::s4u::this_actor::get_pid();
     int trace_dst = getPid(comm, dst);
     TRACE_smpi_comm_in(my_proc_id, __func__,
                        new simgrid::instr::Pt2PtTIData("ISsend", dst,
@@ -274,8 +311,10 @@ int PMPI_Recv(void *buf, int count, MPI_Datatype datatype, int src, int tag, MPI
   if (comm == MPI_COMM_NULL) {
     retval = MPI_ERR_COMM;
   } else if (src == MPI_PROC_NULL) {
-    simgrid::smpi::Status::empty(status);
-    status->MPI_SOURCE = MPI_PROC_NULL;
+    if(status != MPI_STATUS_IGNORE){
+      simgrid::smpi::Status::empty(status);
+      status->MPI_SOURCE = MPI_PROC_NULL;
+    }
     retval = MPI_SUCCESS;
   } else if (src!=MPI_ANY_SOURCE && (src >= comm->group()->size() || src <0)){
     retval = MPI_ERR_RANK;
@@ -286,7 +325,7 @@ int PMPI_Recv(void *buf, int count, MPI_Datatype datatype, int src, int tag, MPI
   } else if(tag<0 && tag !=  MPI_ANY_TAG){
     retval = MPI_ERR_TAG;
   } else {
-    int my_proc_id = simgrid::s4u::this_actor::getPid();
+    int my_proc_id = simgrid::s4u::this_actor::get_pid();
     TRACE_smpi_comm_in(my_proc_id, __func__,
                        new simgrid::instr::Pt2PtTIData("recv", src,
                                                        datatype->is_replayable() ? count : count * datatype->size(),
@@ -296,12 +335,15 @@ int PMPI_Recv(void *buf, int count, MPI_Datatype datatype, int src, int tag, MPI
     retval = MPI_SUCCESS;
 
     // the src may not have been known at the beginning of the recv (MPI_ANY_SOURCE)
-    if (status != MPI_STATUS_IGNORE) {
-      int src_traced = getPid(comm, status->MPI_SOURCE);
-      if (not TRACE_smpi_view_internals()) {
-        TRACE_smpi_recv(src_traced, my_proc_id, tag);
-      }
+    int src_traced=0;
+    if (status != MPI_STATUS_IGNORE) 
+      src_traced = getPid(comm, status->MPI_SOURCE);
+    else
+      src_traced = getPid(comm, src);
+    if (not TRACE_smpi_view_internals()) {
+      TRACE_smpi_recv(src_traced, my_proc_id, tag);
     }
+    
     TRACE_smpi_comm_out(my_proc_id);
   }
 
@@ -328,7 +370,7 @@ int PMPI_Send(void *buf, int count, MPI_Datatype datatype, int dst, int tag, MPI
   } else if(tag < 0 && tag !=  MPI_ANY_TAG){
     retval = MPI_ERR_TAG;
   } else {
-    int my_proc_id         = simgrid::s4u::this_actor::getPid();
+    int my_proc_id         = simgrid::s4u::this_actor::get_pid();
     int dst_traced         = getPid(comm, dst);
     TRACE_smpi_comm_in(my_proc_id, __func__,
                        new simgrid::instr::Pt2PtTIData("send", dst,
@@ -366,7 +408,7 @@ int PMPI_Ssend(void* buf, int count, MPI_Datatype datatype, int dst, int tag, MP
   } else if(tag<0 && tag !=  MPI_ANY_TAG){
     retval = MPI_ERR_TAG;
   } else {
-    int my_proc_id         = simgrid::s4u::this_actor::getPid();
+    int my_proc_id         = simgrid::s4u::this_actor::get_pid();
     int dst_traced         = getPid(comm, dst);
     TRACE_smpi_comm_in(my_proc_id, __func__,
                        new simgrid::instr::Pt2PtTIData("Ssend", dst,
@@ -415,7 +457,7 @@ int PMPI_Sendrecv(void* sendbuf, int sendcount, MPI_Datatype sendtype, int dst,
   } else if((sendtag<0 && sendtag !=  MPI_ANY_TAG)||(recvtag<0 && recvtag != MPI_ANY_TAG)){
     retval = MPI_ERR_TAG;
   } else {
-    int my_proc_id         = simgrid::s4u::this_actor::getPid();
+    int my_proc_id         = simgrid::s4u::this_actor::get_pid();
     int dst_traced         = getPid(comm, dst);
     int src_traced         = getPid(comm, src);
 
@@ -472,11 +514,13 @@ int PMPI_Test(MPI_Request * request, int *flag, MPI_Status * status)
   if (request == nullptr || flag == nullptr) {
     retval = MPI_ERR_ARG;
   } else if (*request == MPI_REQUEST_NULL) {
-    *flag= true;
-    simgrid::smpi::Status::empty(status);
+    if (status != MPI_STATUS_IGNORE){
+      *flag= true;
+      simgrid::smpi::Status::empty(status);
+    }
     retval = MPI_SUCCESS;
   } else {
-    int my_proc_id = ((*request)->comm() != MPI_COMM_NULL) ? simgrid::s4u::this_actor::getPid() : -1;
+    int my_proc_id = ((*request)->comm() != MPI_COMM_NULL) ? simgrid::s4u::this_actor::get_pid() : -1;
 
     TRACE_smpi_testing_in(my_proc_id);
 
@@ -523,13 +567,13 @@ int PMPI_Probe(int source, int tag, MPI_Comm comm, MPI_Status* status) {
   int retval = 0;
   smpi_bench_end();
 
-  if (status == nullptr) {
-    retval = MPI_ERR_ARG;
-  } else if (comm == MPI_COMM_NULL) {
+  if (comm == MPI_COMM_NULL) {
     retval = MPI_ERR_COMM;
   } else if (source == MPI_PROC_NULL) {
-    simgrid::smpi::Status::empty(status);
-    status->MPI_SOURCE = MPI_PROC_NULL;
+    if (status != MPI_STATUS_IGNORE){
+      simgrid::smpi::Status::empty(status);
+      status->MPI_SOURCE = MPI_PROC_NULL;
+    }
     retval = MPI_SUCCESS;
   } else {
     simgrid::smpi::Request::probe(source, tag, comm, status);
@@ -549,8 +593,10 @@ int PMPI_Iprobe(int source, int tag, MPI_Comm comm, int* flag, MPI_Status* statu
     retval = MPI_ERR_COMM;
   } else if (source == MPI_PROC_NULL) {
     *flag=true;
-    simgrid::smpi::Status::empty(status);
-    status->MPI_SOURCE = MPI_PROC_NULL;
+    if (status != MPI_STATUS_IGNORE){
+      simgrid::smpi::Status::empty(status);
+      status->MPI_SOURCE = MPI_PROC_NULL;
+    }
     retval = MPI_SUCCESS;
   } else {
     simgrid::smpi::Request::iprobe(source, tag, comm, flag, status);
@@ -569,9 +615,9 @@ static void trace_smpi_recv_helper(MPI_Request* request, MPI_Status* status)
     int src_traced = req->src();
     // the src may not have been known at the beginning of the recv (MPI_ANY_SOURCE)
     int dst_traced = req->dst();
-    if (req->flags() & RECV) { // Is this request a wait for RECV?
+    if (req->flags() & MPI_REQ_RECV) { // Is this request a wait for RECV?
       if (src_traced == MPI_ANY_SOURCE)
-        src_traced = (status != MPI_STATUSES_IGNORE) ? req->comm()->group()->rank(status->MPI_SOURCE) : req->src();
+        src_traced = (status != MPI_STATUS_IGNORE) ? req->comm()->group()->rank(status->MPI_SOURCE) : req->src();
       TRACE_smpi_recv(src_traced, dst_traced, req->tag());
     }
   }
@@ -590,10 +636,16 @@ int PMPI_Wait(MPI_Request * request, MPI_Status * status)
   } else if (*request == MPI_REQUEST_NULL) {
     retval = MPI_SUCCESS;
   } else {
+    //for tracing, save the handle which might get overriden before we can use the helper on it
+    MPI_Request savedreq = *request;
+    if (savedreq != MPI_REQUEST_NULL && not(savedreq->flags() & MPI_REQ_FINISHED))
+      savedreq->ref();//don't erase te handle in Request::wait, we'll need it later
+    else
+      savedreq = MPI_REQUEST_NULL;
+
     int my_proc_id = (*request)->comm() != MPI_COMM_NULL
-                         ? simgrid::s4u::this_actor::getPid()
+                         ? simgrid::s4u::this_actor::get_pid()
                          : -1; // TODO: cheinrich: Check if this correct or if it should be MPI_UNDEFINED
-
     TRACE_smpi_comm_in(my_proc_id, __func__, new simgrid::instr::NoOpTIData("wait"));
 
     simgrid::smpi::Request::wait(request, status);
@@ -601,7 +653,9 @@ int PMPI_Wait(MPI_Request * request, MPI_Status * status)
 
     //the src may not have been known at the beginning of the recv (MPI_ANY_SOURCE)
     TRACE_smpi_comm_out(my_proc_id);
-    trace_smpi_recv_helper(request, status);
+    trace_smpi_recv_helper(&savedreq, status);
+    if (savedreq != MPI_REQUEST_NULL)
+      simgrid::smpi::Request::unref(&savedreq);
   }
 
   smpi_bench_begin();
@@ -617,17 +671,29 @@ int PMPI_Waitany(int count, MPI_Request requests[], int *index, MPI_Status * sta
     return MPI_SUCCESS;
 
   smpi_bench_end();
+  //for tracing, save the handles which might get overriden before we can use the helper on it
+  std::vector<MPI_Request> savedreqs(requests, requests + count);
+  for (MPI_Request& req : savedreqs) {
+    if (req != MPI_REQUEST_NULL && not(req->flags() & MPI_REQ_FINISHED))
+      req->ref();
+    else
+      req = MPI_REQUEST_NULL;
+  }
 
-  int rank_traced = simgrid::s4u::this_actor::getPid(); // FIXME: In PMPI_Wait, we check if the comm is null?
+  int rank_traced = simgrid::s4u::this_actor::get_pid(); // FIXME: In PMPI_Wait, we check if the comm is null?
   TRACE_smpi_comm_in(rank_traced, __func__, new simgrid::instr::CpuTIData("waitAny", static_cast<double>(count)));
 
   *index = simgrid::smpi::Request::waitany(count, requests, status);
 
   if(*index!=MPI_UNDEFINED){
-    trace_smpi_recv_helper(&requests[*index], status);
+    trace_smpi_recv_helper(&savedreqs[*index], status);
     TRACE_smpi_comm_out(rank_traced);
   }
 
+  for (MPI_Request& req : savedreqs)
+    if (req != MPI_REQUEST_NULL)
+      simgrid::smpi::Request::unref(&req);
+
   smpi_bench_begin();
   return MPI_SUCCESS;
 }
@@ -636,16 +702,29 @@ int PMPI_Waitall(int count, MPI_Request requests[], MPI_Status status[])
 {
   smpi_bench_end();
 
-  int rank_traced = simgrid::s4u::this_actor::getPid(); // FIXME: In PMPI_Wait, we check if the comm is null?
+  //for tracing, save the handles which might get overriden before we can use the helper on it
+  std::vector<MPI_Request> savedreqs(requests, requests + count);
+  for (MPI_Request& req : savedreqs) {
+    if (req != MPI_REQUEST_NULL && not(req->flags() & MPI_REQ_FINISHED))
+      req->ref();
+    else
+      req = MPI_REQUEST_NULL;
+  }
+
+  int rank_traced = simgrid::s4u::this_actor::get_pid(); // FIXME: In PMPI_Wait, we check if the comm is null?
   TRACE_smpi_comm_in(rank_traced, __func__, new simgrid::instr::CpuTIData("waitAll", static_cast<double>(count)));
 
   int retval = simgrid::smpi::Request::waitall(count, requests, status);
 
   for (int i = 0; i < count; i++) {
-    trace_smpi_recv_helper(&requests[i], &status[i]);
+    trace_smpi_recv_helper(&savedreqs[i], status!=MPI_STATUSES_IGNORE ? &status[i]: MPI_STATUS_IGNORE);
   }
   TRACE_smpi_comm_out(rank_traced);
 
+  for (MPI_Request& req : savedreqs)
+    if (req != MPI_REQUEST_NULL)
+      simgrid::smpi::Request::unref(&req);
+
   smpi_bench_begin();
   return retval;
 }
@@ -680,6 +759,30 @@ int PMPI_Testsome(int incount, MPI_Request requests[], int* outcount, int* indic
   return retval;
 }
 
+int PMPI_Cancel(MPI_Request* request)
+{
+  int retval = 0;
+
+  smpi_bench_end();
+  if (*request == MPI_REQUEST_NULL) {
+    retval = MPI_ERR_REQUEST;
+  } else {
+    (*request)->cancel();
+    retval = MPI_SUCCESS;
+  }
+  smpi_bench_begin();
+  return retval;
+}
+
+int PMPI_Test_cancelled(MPI_Status* status, int* flag){
+  if(status==MPI_STATUS_IGNORE){
+    *flag=0;
+    return MPI_ERR_ARG;
+  }
+  *flag=simgrid::smpi::Status::cancelled(status);
+  return MPI_SUCCESS;  
+}
+
 MPI_Request PMPI_Request_f2c(MPI_Fint request){
   return static_cast<MPI_Request>(simgrid::smpi::Request::f2c(request));
 }