Fri, 06 Jul 2018 16:29:47 +0200 just one global lock for group status: avoid proliferation of mutexes, condvars;
wenzelm [Fri, 06 Jul 2018 16:29:47 +0200] rev 68598
just one global lock for group status: avoid proliferation of mutexes, condvars;
Fri, 06 Jul 2018 15:35:48 +0200 more frugal assignment of lazy value: fewer mutexes, condvars;
wenzelm [Fri, 06 Jul 2018 15:35:48 +0200] rev 68597
more frugal assignment of lazy value: fewer mutexes, condvars; cannot use RunCall.clearMutableBit due to spurious crashes;
Fri, 06 Jul 2018 10:44:45 +0100 replaced subgroup_imp_subset in Modules
paulson <lp15@cam.ac.uk> [Fri, 06 Jul 2018 10:44:45 +0100] rev 68596
replaced subgroup_imp_subset in Modules
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