diff options
author | Matt Corallo <git@bluematt.me> | 2017-02-02 22:22:01 -0500 |
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committer | Matt Corallo <git@bluematt.me> | 2017-02-02 22:31:27 -0500 |
commit | 8465631845eac3db834942a4feb50f65c3401c68 (patch) | |
tree | cdd5873fa56481570050a64ef6216cf5a880e5de | |
parent | fd13eca147be80f3ebd1a5a1db1ce75bbeeb1953 (diff) |
Always enforce lock strict lock ordering (try or not)
-rw-r--r-- | src/sync.cpp | 26 |
1 files changed, 1 insertions, 25 deletions
diff --git a/src/sync.cpp b/src/sync.cpp index a18d0f1485..25773f08e9 100644 --- a/src/sync.cpp +++ b/src/sync.cpp @@ -77,52 +77,28 @@ boost::thread_specific_ptr<LockStack> lockstack; static void potential_deadlock_detected(const std::pair<void*, void*>& mismatch, const LockStack& s1, const LockStack& s2) { - // We attempt to not assert on probably-not deadlocks by assuming that - // a try lock will immediately have otherwise bailed if it had - // failed to get the lock - // We do this by, for the locks which triggered the potential deadlock, - // in either lockorder, checking that the second of the two which is locked - // is only a TRY_LOCK, ignoring locks if they are reentrant. - bool firstLocked = false; - bool secondLocked = false; - bool onlyMaybeDeadlock = false; - LogPrintf("POTENTIAL DEADLOCK DETECTED\n"); LogPrintf("Previous lock order was:\n"); BOOST_FOREACH (const PAIRTYPE(void*, CLockLocation) & i, s2) { if (i.first == mismatch.first) { LogPrintf(" (1)"); - if (!firstLocked && secondLocked && i.second.fTry) - onlyMaybeDeadlock = true; - firstLocked = true; } if (i.first == mismatch.second) { LogPrintf(" (2)"); - if (!secondLocked && firstLocked && i.second.fTry) - onlyMaybeDeadlock = true; - secondLocked = true; } LogPrintf(" %s\n", i.second.ToString()); } - firstLocked = false; - secondLocked = false; LogPrintf("Current lock order is:\n"); BOOST_FOREACH (const PAIRTYPE(void*, CLockLocation) & i, s1) { if (i.first == mismatch.first) { LogPrintf(" (1)"); - if (!firstLocked && secondLocked && i.second.fTry) - onlyMaybeDeadlock = true; - firstLocked = true; } if (i.first == mismatch.second) { LogPrintf(" (2)"); - if (!secondLocked && firstLocked && i.second.fTry) - onlyMaybeDeadlock = true; - secondLocked = true; } LogPrintf(" %s\n", i.second.ToString()); } - assert(onlyMaybeDeadlock); + assert(false); } static void push_lock(void* c, const CLockLocation& locklocation, bool fTry) |