| // Copyright 2020 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef SRC_LIB_STORAGE_VFS_CPP_TRANSACTION_TRACE_H_ |
| #define SRC_LIB_STORAGE_VFS_CPP_TRANSACTION_TRACE_H_ |
| |
| #include <stdint.h> |
| |
| namespace fs { |
| |
| // Generates a trace ID that will be unique across the system (barring overflow of the per-process |
| // nonce, reuse of a zx_handle_t for two processes, or some other code in this process which uses |
| // the same procedure to generate IDs). |
| // |
| // We use this instead of the standard TRACE_NONCE because TRACE_NONCE is only unique within a |
| // process; we need IDs that are unique across all processes. |
| uint64_t GenerateTraceId(); |
| |
| } // namespace fs |
| |
| #endif // SRC_LIB_STORAGE_VFS_CPP_TRANSACTION_TRACE_H_ |
