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Poul-Henning Kamp authored
happening again: We optimize session allocation, SES_New(), to minimize the amount of locking the VCA_thread participates in with flip-flop lists of free sessions: Allocate from one list, free to the other, flip lists only when necessary. This scheme only works if nobody but VCA_thread calls SES_New(). Background worker threads need dummy sessions and thus called into SES_New() as well. These calls all happen during startup, so they do in fact not mess up the locking, but made mockery of a number of very stern comments. Add SES_Alloc() for such "other uses" and enforce VCA_thread monopoly with an assert. git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@4069 d4fa192b-c00b-0410-8231-f00ffab90ce4
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