1 files changed, 47 insertions, 0 deletions
diff --git a/src/feature/stats/bwhist.h b/src/feature/stats/bwhist.h
new file mode 100644
index 0000000000..f88b951447
--- /dev/null
+++ b/src/feature/stats/bwhist.h
@@ -0,0 +1,47 @@
+/* Copyright (c) 2001 Matej Pfajfar.
+ * Copyright (c) 2001-2004, Roger Dingledine.
+ * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
+ * Copyright (c) 2007-2020, The Tor Project, Inc. */
+/* See LICENSE for licensing information */
+
+/**
+ * @file bwhist.h
+ * @brief Header for feature/stats/bwhist.c
+ **/
+
+#ifndef TOR_FEATURE_STATS_BWHIST_H
+#define TOR_FEATURE_STATS_BWHIST_H
+
+void bwhist_init(void);
+void bwhist_free_all(void);
+
+void bwhist_note_bytes_read(uint64_t num_bytes, time_t when, bool ipv6);
+void bwhist_note_bytes_written(uint64_t num_bytes, time_t when, bool ipv6);
+void bwhist_note_dir_bytes_read(uint64_t num_bytes, time_t when);
+void bwhist_note_dir_bytes_written(uint64_t num_bytes, time_t when);
+
+MOCK_DECL(int, bwhist_bandwidth_assess, (void));
+char *bwhist_get_bandwidth_lines(void);
+struct or_state_t;
+void bwhist_update_state(struct or_state_t *state);
+int bwhist_load_state(struct or_state_t *state, char **err);
+
+#ifdef BWHIST_PRIVATE
+typedef struct bw_array_t bw_array_t;
+STATIC uint64_t find_largest_max(bw_array_t *b);
+STATIC void commit_max(bw_array_t *b);
+STATIC void advance_obs(bw_array_t *b);
+STATIC bw_array_t *bw_array_new(void);
+STATIC void add_obs(bw_array_t *b, time_t when, uint64_t n);
+#define bw_array_free(val) \
+  FREE_AND_NULL(bw_array_t, bw_array_free_, (val))
+STATIC void bw_array_free_(bw_array_t *b);
+STATIC size_t bwhist_fill_bandwidth_history(char *buf, size_t len,
+                                            const bw_array_t *b);
+#endif /* defined(REPHIST_PRIVATE) */
+
+#ifdef TOR_UNIT_TESTS
+extern struct bw_array_t *write_array;
+#endif
+
+#endif /* !defined(TOR_FEATURE_STATS_BWHIST_H) */