Import of the watch repository from Pebble

src/fw/applib/data_logging.c

@@ -0,0 +1,56 @@
+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "data_logging.h"
+#include "services/normal/data_logging/dls_private.h"
+
+#include "applib/app_logging.h"
+#include "applib/applib_malloc.auto.h"
+#include "syscall/syscall.h"
+
+DataLoggingSessionRef data_logging_create(uint32_t tag, DataLoggingItemType item_type,
+                                          uint16_t item_length, bool resume) {
+  void *buffer = NULL;
+
+  // For workers, dls_create_current_process() will create the buffer for us. All others must
+  // allocate the buffer in their own heap (before going into privileged mode).
+  if (pebble_task_get_current() != PebbleTask_Worker) {
+    buffer = applib_malloc(DLS_SESSION_MIN_BUFFER_SIZE);
+    if (!buffer) {
+      APP_LOG(APP_LOG_LEVEL_ERROR, "insufficient memory");
+      return NULL;
+    }
+  }
+
+  // Create the session
+  DataLoggingSessionRef session = sys_data_logging_create(tag, item_type, item_length, buffer,
+                                                          resume);
+  if (session == NULL && buffer != NULL) {
+    applib_free(buffer);
+  }
+
+  return session;
+}
+
+void data_logging_finish(DataLoggingSessionRef logging_session) {
+  sys_data_logging_finish(logging_session);
+}
+
+DataLoggingResult data_logging_log(DataLoggingSessionRef logging_session, const void *data,
+                                   uint32_t num_items) {
+  return sys_data_logging_log(logging_session, data, num_items);
+}
+