1 files changed, 99 insertions, 0 deletions
diff --git a/src/lib/evloop/compat_libevent.h b/src/lib/evloop/compat_libevent.h
new file mode 100644
index 0000000000..0a50cfa667
--- /dev/null
+++ b/src/lib/evloop/compat_libevent.h
@@ -0,0 +1,99 @@
+/* Copyright (c) 2009-2018, The Tor Project, Inc. */
+/* See LICENSE for licensing information */
+
+#ifndef TOR_COMPAT_LIBEVENT_H
+#define TOR_COMPAT_LIBEVENT_H
+
+#include "orconfig.h"
+#include "lib/testsupport/testsupport.h"
+#include "lib/malloc/util_malloc.h"
+
+void configure_libevent_logging(void);
+void suppress_libevent_log_msg(const char *msg);
+
+#define tor_event_new     event_new
+#define tor_evtimer_new   evtimer_new
+#define tor_evsignal_new  evsignal_new
+#define tor_evdns_add_server_port(sock, tcp, cb, data) \
+  evdns_add_server_port_with_base(tor_libevent_get_base(), \
+  (sock),(tcp),(cb),(data));
+
+struct event;
+struct event_base;
+struct timeval;
+
+void tor_event_free_(struct event *ev);
+#define tor_event_free(ev) \
+  FREE_AND_NULL(struct event, tor_event_free_, (ev))
+
+typedef struct periodic_timer_t periodic_timer_t;
+
+periodic_timer_t *periodic_timer_new(struct event_base *base,
+             const struct timeval *tv,
+             void (*cb)(periodic_timer_t *timer, void *data),
+             void *data);
+void periodic_timer_free_(periodic_timer_t *);
+void periodic_timer_launch(periodic_timer_t *, const struct timeval *tv);
+void periodic_timer_disable(periodic_timer_t *);
+#define periodic_timer_free(t) \
+  FREE_AND_NULL(periodic_timer_t, periodic_timer_free_, (t))
+
+typedef struct mainloop_event_t mainloop_event_t;
+mainloop_event_t *mainloop_event_new(void (*cb)(mainloop_event_t *, void *),
+                                     void *userdata);
+mainloop_event_t * mainloop_event_postloop_new(
+                                     void (*cb)(mainloop_event_t *, void *),
+                                     void *userdata);
+void mainloop_event_activate(mainloop_event_t *event);
+int mainloop_event_schedule(mainloop_event_t *event,
+                            const struct timeval *delay);
+void mainloop_event_cancel(mainloop_event_t *event);
+void mainloop_event_free_(mainloop_event_t *event);
+#define mainloop_event_free(event) \
+  FREE_AND_NULL(mainloop_event_t, mainloop_event_free_, (event))
+
+/** Defines a configuration for using libevent with Tor: passed as an argument
+ * to tor_libevent_initialize() to describe how we want to set up. */
+typedef struct tor_libevent_cfg {
+  /** How many CPUs should we use (not currently useful). */
+  int num_cpus;
+  /** How many milliseconds should we allow between updating bandwidth limits?
+   * (Not currently useful). */
+  int msec_per_tick;
+} tor_libevent_cfg;
+
+void tor_libevent_initialize(tor_libevent_cfg *cfg);
+MOCK_DECL(struct event_base *, tor_libevent_get_base, (void));
+const char *tor_libevent_get_method(void);
+void tor_check_libevent_header_compatibility(void);
+const char *tor_libevent_get_version_str(void);
+const char *tor_libevent_get_header_version_str(void);
+void tor_libevent_free_all(void);
+
+int tor_init_libevent_rng(void);
+
+#ifdef TOR_UNIT_TESTS
+void tor_libevent_postfork(void);
+#endif
+
+int tor_libevent_run_event_loop(struct event_base *base, int once);
+void tor_libevent_exit_loop_after_delay(struct event_base *base,
+                                        const struct timeval *delay);
+void tor_libevent_exit_loop_after_callback(struct event_base *base);
+
+#ifdef COMPAT_LIBEVENT_PRIVATE
+
+/** Macro: returns the number of a Libevent version as a 4-byte number,
+    with the first three bytes representing the major, minor, and patchlevel
+    respectively of the library.  The fourth byte is unused.
+
+    This is equivalent to the format of LIBEVENT_VERSION_NUMBER on Libevent
+    2.0.1 or later. */
+#define V(major, minor, patch) \
+  (((major) << 24) | ((minor) << 16) | ((patch) << 8))
+
+STATIC void
+libevent_logging_callback(int severity, const char *msg);
+#endif /* defined(COMPAT_LIBEVENT_PRIVATE) */
+
+#endif /* !defined(TOR_COMPAT_LIBEVENT_H) */