[yunq] Add codegen for clients and servers (untested).

yunq/server.cpp.jinja

@@ -0,0 +1,93 @@
+// Generated file -- DO NOT MODIFY.
+#include "{{file}}.server.h"
+
+#include <mammoth/debug.h>
+#include <zcall.h>
+
+namespace {
+
+const uint32_t kSentinel = 0xBEEFDEAD;
+const uint32_t kHeaderSize = 0x10;
+
+void WriteError(glcr::ByteBuffer& buffer, glcr::ErrorCode err) {
+  buffer.WriteAt<uint32_t>(0, kSentinel);
+  buffer.WriteAt<uint32_t>(4, kHeaderSize);
+  buffer.WriteAt<uint64_t>(8, err); 
+}
+
+void WriteHeader(glcr::ByteBuffer& buffer, uint64_t message_length) {
+  buffer.WriteAt<uint32_t>(0, kSentinel);
+  buffer.WriteAt<uint32_t>(4, kHeaderSize + message_length);
+  buffer.WriteAt<uint64_t>(8, glcr::OK); 
+}
+
+}  // namespace
+
+
+{% for interface in interfaces %}
+void {{interface.name}}ServerBaseThreadBootstrap(void* server_base) {
+  ({{interface.name}}ServerBase*)(server_base)->ServerThread();
+}
+
+Thread {{interface.name}}::RunServer() {
+  return Thread({{interface.name}}ServerBaseThreadBootstrap, this);
+}
+
+void {{interface.name}}::ServerThread() {
+  glcr::ByteBuffer recv_buffer(0x1000);
+  glcr::ByteBuffer resp_buffer(0x1000);
+  uint64_t resp_cap_size = 0x10;
+  glcr::CapBuffer resp_cap(resp_cap_size);
+  z_cap_t reply_port_cap;
+
+  while (true) {
+    uint64_t recv_buf_size = 0x1000;
+    glcr::ErrorCode recv_err = ZEndpointRecv(endpoint_, &recv_buf_size, recv_buffer.RawPtr(), &reply_port_cap);
+    if (recv_err != glcr::OK) {
+      dbgln("Error in receive: %x", recv_err);
+      continue;
+    }
+
+    uint64_t resp_length = 0;
+    
+    glcr::ErrorCode err = HandlRequest(recv_buffer, resp_buffer, resp_length, resp_cap);
+    if (err != glcr::OK) {
+      WriteError(resp_buffer, err);
+      ZReplyPortSend(reply_port_cap, kHeaderSize, resp_buffer.RawPtr(), 0, nullptr);
+    } else {
+      WriteHeader(resp_buffer, resp_length);
+      ZReplyPortSend(reply_port_cap, resp_length, resp_buffer.RawPtr(), resp_cap.UsedSlots(), resp_cap.RawPtr());
+    }
+  }
+
+}
+
+glcr::ErrorCode {{interface.name}}::HandleRequest(const glcr::ByteBuffer& request, glcr::ByteBuffer& response, uint64_t& resp_length
+                                                  glcr::CapBuffer& resp_caps) {
+  if (recv_buffer.At<uint32_t>(0) != kSentinel) {
+    return glcr::INVALID_INPUT;
+  } 
+  
+  uint64_t method_select = recv_buffer.At<uint64_t>(8);
+
+  switch(method_select) {
+{%- for method in interface.methods %}
+    case {{loop.index0}}: {
+      {{method.request}} request;
+      {{method.response}} response;
+
+      request.ParseFromBytes(recv_buffer, kHeaderSize);
+
+      RET_ERR(Handle{{method.name}}(request, response));
+
+      resp_length = response.SerializeToBytes(resp_buffer, kHeaderSize, resp_cap);
+      break;
+    }
+{%- endfor %}
+    default: {
+      return glcr::UNIMPLEMENTED;
+    }
+  }
+  return glcr::OK;
+}
+{% endfor %}