1 files changed, 34 insertions, 0 deletions
diff --git a/logd/LogSize.h b/logd/LogSize.h
new file mode 100644
index 000000000..d5716ff48
--- /dev/null
+++ b/logd/LogSize.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * 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.
+ */
+
+#pragma once
+
+#include <stddef.h>
+
+#include <log/log.h>
+
+static constexpr size_t kDefaultLogBufferSize = 256 * 1024;
+static constexpr size_t kLogBufferMinSize = 64 * 1024;
+static constexpr size_t kLogBufferMaxSize = 256 * 1024 * 1024;
+
+bool IsValidBufferSize(size_t value);
+
+// This returns the buffer size as set in system properties for use in LogBuffer::Init().
+// Note that `logcat -G` calls LogBuffer::SetSize(), which configures log buffer sizes without
+// setting these properties, so this function should never be used except for LogBuffer::Init().
+// LogBuffer::GetSize() should be used instead within logd.  Other processes can use
+// android_logger_get_log_size() or `logcat -g` to query the actual allotted buffer size.
+size_t GetBufferSizeFromProperties(log_id_t log_id);