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author | Kostya Serebryany <kcc@google.com> | 2014-03-14 08:06:15 +0000 |
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committer | Kostya Serebryany <kcc@google.com> | 2014-03-14 08:06:15 +0000 |
commit | 30fd39fe12a619c9317d0dbd605b63cd044a0f43 (patch) | |
tree | 0cd41a70a56273f668c6d54384832c66a9025f36 /lib/sanitizer_common/sanitizer_deadlock_detector.h | |
parent | de54e50adca1ed8572a97ec8a923b9823d8850ae (diff) |
[sanitizer] partially implement racy fast path in bitset-based deadlock detector
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@203904 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/sanitizer_common/sanitizer_deadlock_detector.h')
-rw-r--r-- | lib/sanitizer_common/sanitizer_deadlock_detector.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/sanitizer_common/sanitizer_deadlock_detector.h b/lib/sanitizer_common/sanitizer_deadlock_detector.h index 33913137f..6d4cec86c 100644 --- a/lib/sanitizer_common/sanitizer_deadlock_detector.h +++ b/lib/sanitizer_common/sanitizer_deadlock_detector.h @@ -172,6 +172,16 @@ class DeadlockDetector { dtls->addLock(cur_idx, current_epoch_); } + // Experimental *racy* fast path function. + // Returns true if all edges from the currently held locks to cur_node exist. + bool hasAllEdges(DeadlockDetectorTLS<BV> *dtls, uptr cur_node) { + if (dtls->getEpoch() == nodeToEpoch(cur_node)) { + uptr cur_idx = nodeToIndexUnchecked(cur_node); + return g_.hasAllEdges(dtls->getLocks(current_epoch_), cur_idx); + } + return false; + } + // Adds edges from currently held locks to cur_node, // returns the number of added edges, and puts the sources of added edges // into added_edges[]. |