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Ran 21 Nov 2019 08:52PM UTC

Files 648

Run time 1min

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Committed 21 Nov 2019 08:28PM UTC coverage: 73.14%. Remained the same

Job # TEST_SUITES="testpackages testinstall-loadall" ABI=64

Build Type

push

travis-ci

Committed by

ChrisJefferson

Commit Message

Sync some diffs between hpcgap/lib and lib

Also fix what looks like a race condition in TYPE_VEC8BIT resp.
TYPE_VEC8BIT_LOCKED: if two threads called these at the same time, they
might create two different type object A and B for the same parameters.
Then the first thread might call InstallTypeSerializationTag with type
A, which installs that type; then execution switches to the second
thread, which also calls InstallTypeSerializationTag (overriding the
installed value with B); the execution switches back to the first
thread, which sets TYPES_VEC8BIT[col][q] to A; and then thread 2
resumes; it also tries to set TYPES_VEC8BIT[col][q], but since there is
already a value in this write-once atomic list, it does nothing.

In the end, A is in TYPES_VEC8BIT and B in DESERIALIZATION_TAG_INT_NEW,
which is not what we want.

So instead, we first set TYPES_VEC8BIT[col][q]; then read back the value
from there and pass that to InstallTypeSerializationTag.

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