From e2195037116f47b11b66452351dba4fe606423a2 Mon Sep 17 00:00:00 2001 From: "Wladimir J. van der Laan" Date: Thu, 3 Mar 2016 13:28:07 +0100 Subject: Fix memleak in TorController [rework] It looks like, TorController::disconnected_cb(TorControlConnection& conn) gets called multiple times which results in multiple event_new(). Avoid this by creating the event only once in the constructore, and deleting it only once in the destructor (thanks to Cory Fields for the idea). Replaces the fix by Jonas Schnelli in #7610, see discussion there. --- src/torcontrol.cpp | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/src/torcontrol.cpp b/src/torcontrol.cpp index 10170dbcea..a04b5c3024 100644 --- a/src/torcontrol.cpp +++ b/src/torcontrol.cpp @@ -398,6 +398,9 @@ TorController::TorController(struct event_base* base, const std::string& target) target(target), conn(base), reconnect(true), reconnect_ev(0), reconnect_timeout(RECONNECT_TIMEOUT_START) { + reconnect_ev = event_new(base, -1, 0, reconnect_cb, this); + if (!reconnect_ev) + LogPrintf("tor: Failed to create event for reconnection: out of memory?\n"); // Start connection attempts immediately if (!conn.Connect(target, boost::bind(&TorController::connected_cb, this, _1), boost::bind(&TorController::disconnected_cb, this, _1) )) { @@ -413,8 +416,10 @@ TorController::TorController(struct event_base* base, const std::string& target) TorController::~TorController() { - if (reconnect_ev) - event_del(reconnect_ev); + if (reconnect_ev) { + event_free(reconnect_ev); + reconnect_ev = 0; + } if (service.IsValid()) { RemoveLocal(service); } @@ -626,8 +631,8 @@ void TorController::disconnected_cb(TorControlConnection& conn) // Single-shot timer for reconnect. Use exponential backoff. struct timeval time = MillisToTimeval(int64_t(reconnect_timeout * 1000.0)); - reconnect_ev = event_new(base, -1, 0, reconnect_cb, this); - event_add(reconnect_ev, &time); + if (reconnect_ev) + event_add(reconnect_ev, &time); reconnect_timeout *= RECONNECT_TIMEOUT_EXP; } -- cgit v1.2.3