Merge pull request #18445 from nicolasnoble/last-memset-for-real-this-time

Taking care of a last few memsets.

src/core/ext/filters/client_channel/health/health_check_client.cc

@@ -349,7 +349,6 @@ void HealthCheckClient::CallState::StartCall() {
     return;
   }
   // Initialize payload and batch.
-  memset(&batch_, 0, sizeof(batch_));
   payload_.context = context_;
   batch_.payload = &payload_;
   // on_complete callback takes ref, handled manually.
@@ -401,8 +400,6 @@ void HealthCheckClient::CallState::StartCall() {
   // Start batch.
   StartBatch(&batch_);
   // Initialize recv_trailing_metadata batch.
-  memset(&recv_trailing_metadata_batch_, 0,
-         sizeof(recv_trailing_metadata_batch_));
   recv_trailing_metadata_batch_.payload = &payload_;
   // Add recv_trailing_metadata op.
   grpc_metadata_batch_init(&recv_trailing_metadata_);
@@ -507,7 +504,6 @@ void HealthCheckClient::CallState::DoneReadingRecvMessage(grpc_error* error) {
   // This re-uses the ref we're holding.
   // Note: Can't just reuse batch_ here, since we don't know that all
   // callbacks from the original batch have completed yet.
-  memset(&recv_message_batch_, 0, sizeof(recv_message_batch_));
   recv_message_batch_.payload = &payload_;
   payload_.recv_message.recv_message = &recv_message_;
   payload_.recv_message.recv_message_ready = GRPC_CLOSURE_INIT(

src/core/lib/security/credentials/google_default/google_default_credentials.cc

@@ -172,7 +172,6 @@ static int is_metadata_server_reachable() {
   detector.pollent = grpc_polling_entity_create_from_pollset(pollset);
   detector.is_done = 0;
   detector.success = 0;
-  memset(&detector.response, 0, sizeof(detector.response));
   memset(&request, 0, sizeof(grpc_httpcli_request));
   request.host = (char*)GRPC_COMPUTE_ENGINE_DETECTION_HOST;
   request.http.path = (char*)"/";

src/core/lib/transport/transport.cc

@@ -29,6 +29,7 @@
 
 #include "src/core/lib/gpr/alloc.h"
 #include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/memory.h"
 #include "src/core/lib/iomgr/executor.h"
 #include "src/core/lib/iomgr/iomgr.h"
 #include "src/core/lib/slice/slice_internal.h"
@@ -243,25 +244,26 @@ void grpc_transport_stream_op_batch_finish_with_failure(
   GRPC_ERROR_UNREF(error);
 }
 
-typedef struct {
+struct made_transport_op {
   grpc_closure outer_on_complete;
-  grpc_closure* inner_on_complete;
+  grpc_closure* inner_on_complete = nullptr;
   grpc_transport_op op;
-} made_transport_op;
+  made_transport_op() {
+    memset(&outer_on_complete, 0, sizeof(outer_on_complete));
+  }
+};
 
 static void destroy_made_transport_op(void* arg, grpc_error* error) {
   made_transport_op* op = static_cast<made_transport_op*>(arg);
   GRPC_CLOSURE_SCHED(op->inner_on_complete, GRPC_ERROR_REF(error));
-  gpr_free(op);
+  grpc_core::Delete<made_transport_op>(op);
 }
 
 grpc_transport_op* grpc_make_transport_op(grpc_closure* on_complete) {
-  made_transport_op* op =
-      static_cast<made_transport_op*>(gpr_malloc(sizeof(*op)));
+  made_transport_op* op = grpc_core::New<made_transport_op>();
   GRPC_CLOSURE_INIT(&op->outer_on_complete, destroy_made_transport_op, op,
                     grpc_schedule_on_exec_ctx);
   op->inner_on_complete = on_complete;
-  memset(&op->op, 0, sizeof(op->op));
   op->op.on_consumed = &op->outer_on_complete;
   return &op->op;
 }