git-svn-id: file:///svn/tokudb@3154 c7de825b-a66e-492c-adef-691d508d4ae1

We were reading error codes of malloc incorrectly.
errno is not valid unless you know you had an error.

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Fixes memory leak (in a test)

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Merge all of ticket 567 into trunk

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Add the first two tests for {{{DB_ENV->log_archive}}}.  Fix up some memory leaks.  Add {{{LSN*}}} to all the {{{toku_log_*}}} functions so that {{{toku_logger_txn_begin}}} can use the LSN as a txnid.  Addresses #75, #83, #392.

git-svn-id: file:///svn/tokudb@3004 c7de825b-a66e-492c-adef-691d508d4ae1

{{{DB_ENV->log_archive}}} understands checkpoints, but not live transactions.  Addresses #75, #83, #392.

git-svn-id: file:///svn/tokudb@3003 c7de825b-a66e-492c-adef-691d508d4ae1

make {{{DB_ENV->log_archive}}} return something (but it's not quite right).  Clean up the serialization of the brt header.  Fix up {{{DB_ENV->txn_checkpoint}}} (but it's not quite right).  Addresses #75, #83, #392.

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error code for running out of locks

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test_abort2 works up until a lock tree problem.  I think the test and abort mechanisms are right now.  I'll close #556 but file a new bug (#569).  Fixes #556.  Addresses #569.

git-svn-id: file:///svn/tokudb@2982 c7de825b-a66e-492c-adef-691d508d4ae1

Addresses #554
When lock trees close before transactions do (that touch them), we can crash
or have memory corruption.

Now, when lock trees close, they alert all transactions that they have disappeared.

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while investigating 554, came across this issue of not checking for proper value
This MAY fix 554, but we doubt it.

git-svn-id: file:///svn/tokudb@2953 c7de825b-a66e-492c-adef-691d508d4ae1

Lock escalation causes all lock trees (all dbs in an environment)
to escalate their locks.
This is useful, since we can have one lock tree/db holding 99% of the locks
and then we run out of locks on a different lock tree.

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Fixed memory leak during closing of lock tree managers.

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Fixes memory leak (just in test) of locktree managers.

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Lock tree manager keeps track of all the lock trees so we can loop through them.

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'Lock tree manager' object created to hold data shared by all lock trees
i.e. Current number of locks (per env) and max locks (per env)
Uses functions to change max_locks.
Added tests for lock tree manager.


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Create test_log6a_abort.c.   Returns {{{ENOMEM}}} from {{{r = toku_lt_acquire_write_lock(db->i->lt, toku_txn_ancestor(txn...)...)}}} in ydb.c:2126.  Addresss #536.  Maybe also Addresses #501. (?).

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