John Cupitt 976db37f84 Revised threading system (#3105) ... * reimplement threadpool just a set of threads that get recycled "ninja test" passes and dzsave seems to work, though pytest fails for some reason * clean up threading code a bit move base stuff into thread.c, so we have a simple thread -> threadset -> threadpool layering * start trying to revert g_threadpool based on the original commit * working! nice low systime again still need to repply cnages to threadpool.c since 80e0cc3d1 * reapply fixes from master so threadpool.c is now up to date * rename VipsThread as VipsWorker a bit less confusing * use a semaphore to count workers in a pool * tidy up * formatting * dynamic threadpool sizing based on counting the number of blocked threads in each pool it works, but the improvement is not great :( * add "concurrency" metadata item so operators can hint threadpool size (dzsave especially) * don't use thinstrip for small images * add RGB mode to openslide since flatten was taking 20% of CPU time for dzsave * fix up rgb mode now actually works * make the tile buffer per thread in the new openslideload rgb mode * fix dynamic pool downsize * mild refactoring * fix the buffer system oops, turned it off by mistake * all done! * revise changelog * Update libvips/iofuncs/threadset.c Co-authored-by: Kleis Auke Wolthuizen <github@kleisauke.nl> * Update libvips/iofuncs/threadset.c Co-authored-by: Kleis Auke Wolthuizen <github@kleisauke.nl> * LSan: add libMagickCore to suppression file * Revert "Remove mutex lock for VipsThreadStartFn" This reverts commit 41440491. * add VIPS_MAX_THREADS to set a hard limit on the threadset size * Revert "Revert "Remove mutex lock for VipsThreadStartFn"" This reverts commit 77e8520966ba79194fff3b4e648bbd295cd5c260. * remove sslock from sink.c * move fixed threadpool build to init not first use * add some doc comments * revert test suite threshold change * add a test for MAX_THREADS and move the test tmp/ area into the builddir * limit VIPS_MAX_THREADS to sane values * use tabs rather than spaces Co-authored-by: Kleis Auke Wolthuizen <github@kleisauke.nl>		2022-10-26 15:25:19 +01:00
..
asan.supp	more suppressions to a subdir	2019-08-09 11:43:13 +01:00
lsan.supp	Revised threading system (#3105)	2022-10-26 15:25:19 +01:00
tsan.supp	Add suppressions file for ThreadSanitizer	2021-05-03 13:21:45 +02:00
ubsan.supp	try suppressing libexif ubsan again	2019-08-09 13:49:15 +01:00
valgrind.supp	more suppressions to a subdir	2019-08-09 11:43:13 +01:00