X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/8d51848cefcf39dbe0072eacd5fc50765b8b4e37..cfa37467445963796bfdafdec9bad8ec8566a60a:/src/smpi/internals/smpi_memory.cpp

diff --git a/src/smpi/internals/smpi_memory.cpp b/src/smpi/internals/smpi_memory.cpp
index 47d7705416..f11d75912e 100644
--- a/src/smpi/internals/smpi_memory.cpp
+++ b/src/smpi/internals/smpi_memory.cpp
@@ -88,7 +88,7 @@ static void smpi_get_executable_global_size()
 }
 #endif
 
-#if HAVE_SANITIZE_ADDRESS
+#if HAVE_SANITIZER_ADDRESS
 #include <sanitizer/asan_interface.h>
 static void* asan_safe_memcpy(void* dest, void* src, size_t n)
 {
@@ -243,40 +243,52 @@ void smpi_destroy_global_memory_segments(){
 #endif
 }
 
-static int sendbuffer_size = 0;
-static char* sendbuffer    = nullptr;
-static int recvbuffer_size = 0;
-static char* recvbuffer    = nullptr;
 
-//allocate a single buffer for all sends, growing it if needed
-void* smpi_get_tmp_sendbuffer(int size)
+//allocate a single buffer for all sends, and an other of all reads, for each actor.
+//buffer size is growing if needed
+
+typedef std::tuple</*buffer adress*/ void*, /*buffer size*/ int> buffer_tuple;
+static std::map<aid_t, buffer_tuple> sendbuffer_map;
+static std::map<aid_t, buffer_tuple> recvbuffer_map;
+static void* smpi_get_tmp_buffer(int size, std::map<aid_t, buffer_tuple>* buffer_map)
 {
+  // Because this kind of process maintain is own list of buffers and call
+  // `smpi_free_tmp_buffer(void* buf)` to free them
   if (not smpi_process()->replaying())
     return xbt_malloc(size);
-  if (sendbuffer_size<size){
-    sendbuffer=static_cast<char*>(xbt_realloc(sendbuffer,size));
-    sendbuffer_size=size;
+
+  // check if the process is registered
+  aid_t id = simgrid::s4u::this_actor::get_pid();
+  if (buffer_map->find(id) == buffer_map->end()) {
+    // This tuple represents a buffer and his size
+    buffer_tuple buffer_tuple(nullptr, 0);
+    (*buffer_map)[id] = buffer_tuple;
+    simgrid::s4u::this_actor::on_exit(
+        [id, buffer_map](int status, void* ignored) {
+          xbt_free(std::get<0>((*buffer_map)[id]));
+          std::get<0>((*buffer_map)[id]) = nullptr;
+        },
+        nullptr);
   }
-  return sendbuffer;
-}
 
-//allocate a single buffer for all recv
-void* smpi_get_tmp_recvbuffer(int size){
-  if (not smpi_process()->replaying())
-    return xbt_malloc(size);
-  if (recvbuffer_size<size){
-    recvbuffer=static_cast<char*>(xbt_realloc(recvbuffer,size));
-    recvbuffer_size=size;
+  if (std::get<1>((*buffer_map)[id]) < size) {
+    std::get<0>((*buffer_map)[id]) = xbt_realloc(std::get<0>((*buffer_map)[id]), size);
+    std::get<1>((*buffer_map)[id]) = size;
   }
-  return recvbuffer;
+  return std::get<0>((*buffer_map)[id]);
+}
+
+void* smpi_get_tmp_sendbuffer(int size)
+{
+  return smpi_get_tmp_buffer(size, &sendbuffer_map);
+}
+
+void* smpi_get_tmp_recvbuffer(int size)
+{
+  return smpi_get_tmp_buffer(size, &recvbuffer_map);
 }
 
 void smpi_free_tmp_buffer(void* buf){
   if (not smpi_process()->replaying())
     xbt_free(buf);
 }
-
-void smpi_free_replay_tmp_buffers(){
-  xbt_free(sendbuffer);
-  xbt_free(recvbuffer);
-}