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AssertHeld() should do things

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Summary:
AssertHeld() was a no-op before. Now it does things.

Also, this change caught a bad bug in SuperVersion::Init(). The method is calling db->mutex.AssertHeld(), but db variable is not initialized yet! I also fixed that issue.

Test Plan: make check

Reviewers: dhruba, haobo, ljin, sdong, yhchiang

Reviewed By: haobo

CC: leveldb

Differential Revision: https://reviews.facebook.net/D17193
This commit is contained in:
Igor Canadi
2014-03-26 11:24:52 -07:00
parent ad9a39c9b4
commit 954679bb0f
3 changed files with 32 additions and 4 deletions
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2
db/db_impl.cc
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@@ -3331,10 +3331,10 @@ void DBImpl::InstallSuperVersion(DeletionState& deletion_state) {
DBImpl::SuperVersion* DBImpl::InstallSuperVersion(
SuperVersion* new_superversion) {
mutex_.AssertHeld();
new_superversion->db = this;
new_superversion->Init(mem_, imm_.current(), versions_->current());
SuperVersion* old_superversion = super_version_;
super_version_ = new_superversion;
super_version_->db = this;
++super_version_number_;
super_version_->version_number = super_version_number_;