MPI

components/rpc/MessagingInterface.cpp

@@ -2,3 +2,51 @@
 // Created by Johnathon Slightham on 2025-05-25.
 //
 
+#include "MessagingInterface.h"
+
+#include "MPIMessageBuilder.h"
+
+MessagingInterface::~MessagingInterface() {
+
+}
+
+int MessagingInterface::send(char* buffer, int size, int destination, int tag, bool durable) {
+    return 0;
+}
+
+int MessagingInterface::broadcast(char* buffer, int size, int root, bool durable) {
+
+    return 0;
+}
+
+int MessagingInterface::recv(char* buffer, int size, int source, const int tag) {
+    checkOrInsertTag(tag);
+
+    // todo: the buffer needs to be large enough, this copies into the buffer...
+    // todo: handle the source
+    xQueueReceive(m_tag_to_queue.at(tag), buffer, portMAX_DELAY);
+
+    return 0;
+}
+
+int MessagingInterface::sendrecv(char* send_buffer, int send_size, int dest, int send_tag, char* recv_buffer, int recv_size, int recv_tag) {
+
+    return 0;
+}
+
+// todo: when handleRecv returns, remove from queue (from router)
+void MessagingInterface::handleRecv(const char* recv_buffer, int recv_size) {
+    const auto mpi_message = Flatbuffers::MPIMessageBuilder::parse_mpi_message(reinterpret_cast<const uint8_t *>(recv_buffer));
+
+    checkOrInsertTag(mpi_message->tag());
+
+    xQueueSendToBack(m_tag_to_queue.at(mpi_message->tag()), mpi_message->payload(), 0);
+}
+
+void MessagingInterface::checkOrInsertTag(const uint8_t tag) {
+    xSemaphoreTake(m_map_semaphore, portMAX_DELAY);
+    if (!m_tag_to_queue.contains(tag)) {
+        m_tag_to_queue[tag] = xQueueCreate(MPI_QUEUE_SIZE, MAX_MPI_BUFFER_SIZE);
+    }
+    xSemaphoreGive(m_map_semaphore);
+}