As discussed in the other thread, this brings speedups from
dropping the coroutine mutex (which serializes multiple iothreads,
too) and using ELF thread-local storage.
The speedup in perf/cost is about 50% (190->125). Windows port tested
with tests/test-coroutine.exe under Wine.
Paolo
v1->v2: include the noinline attribute [many...]
do not mention SwitchToFiber [Kevin]
rename run_main_iothread_exit -> run_main_thread_exit
leave personal opinions out of commit messages :) [Kevin]
mention gain from patch 7 [Peter]
change "alloc_pool_size +=" to "alloc_pool_size =" [Peter]
Paolo Bonzini (7):
coroutine-ucontext: use __thread
qemu-thread: add per-thread atexit functions
test-coroutine: avoid overflow on 32-bit systems
QSLIST: add lock-free operations
coroutine: rewrite pool to avoid mutex
coroutine: drop qemu_coroutine_adjust_pool_size
coroutine: try harder not to delete coroutines
block/block-backend.c | 4 --
coroutine-ucontext.c | 64 +++++++---------------------
include/block/coroutine.h | 10 -----
include/qemu/queue.h | 15 ++++++-
include/qemu/thread.h | 4 ++
qemu-coroutine.c | 104 ++++++++++++++++++++++------------------------
tests/test-coroutine.c | 2 +-
util/qemu-thread-posix.c | 37 +++++++++++++++++
util/qemu-thread-win32.c | 48 ++++++++++++++++-----
9 files changed, 157 insertions(+), 131 deletions(-)