Bug 15270 – use TLS to store Thread.getThis (pthread_getspecific causes heavy lock contention)

Before 2.066 Thread.getThis() was stored in a plain TLS variable. In order to fix issue 11981 this was changed to use pthread_getspecific. Apparently this is a huge performance issue (see https://github.com/D-Programming-Language/druntime/pull/1419).

Commits pushed to master at https://github.com/D-Programming-Language/druntime https://github.com/D-Programming-Language/druntime/commit/e226ff2bd26b1941ddadfa0b30ca4f162901ab13 fix Issue 15270 - use TLS to store Thread.getThis - as signals are no longer send during thread startup we can use a TLS variable to store Thread.getThis() - make sure to set the variable (and probably trigger lazy TLS allocation) before adding the Thread to the global list https://github.com/D-Programming-Language/druntime/commit/c2c255ce0be5deacd2df61df5135769727983173 Merge pull request #1422 from MartinNowak/fix15670 fix Issue 15270 - use TLS to store Thread.getThis

Commits pushed to stable at https://github.com/D-Programming-Language/druntime https://github.com/D-Programming-Language/druntime/commit/e226ff2bd26b1941ddadfa0b30ca4f162901ab13 fix Issue 15270 - use TLS to store Thread.getThis https://github.com/D-Programming-Language/druntime/commit/c2c255ce0be5deacd2df61df5135769727983173 Merge pull request #1422 from MartinNowak/fix15670