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| author | Lukas Larsson <[email protected]> | 2018-10-09 16:11:43 +0200 |
|---|---|---|
| committer | Lukas Larsson <[email protected]> | 2018-10-23 09:58:38 +0200 |
| commit | 090f9543f66cc0c4ea4d1ca63902c300b103f271 (patch) | |
| tree | 70aabba756f9b6550b52d523472079b12219e0d6 /erts/emulator/sys/win32 | |
| parent | d9682b02b81fa6e23e554b6e017650eb89ecebed (diff) | |
| download | otp-090f9543f66cc0c4ea4d1ca63902c300b103f271.tar.gz otp-090f9543f66cc0c4ea4d1ca63902c300b103f271.tar.bz2 otp-090f9543f66cc0c4ea4d1ca63902c300b103f271.zip | |
erts: Pass thread progress data where possible
The poll thread does a lot of waking up and then going
back to sleep. A large part of the waking up is managing
thread progress and a large part of that was using thread
specific data to get the thread progress data pointer.
With this refactor the tpd is passed to each of the functions
which greatly decreases the number of ethr_get_tsd calls
which in turn halves the CPU usage of the poller thread in
certain scenarios.
Diffstat (limited to 'erts/emulator/sys/win32')
| -rw-r--r-- | erts/emulator/sys/win32/erl_poll.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/erts/emulator/sys/win32/erl_poll.c b/erts/emulator/sys/win32/erl_poll.c index 39bb4d515e..5d832f4d34 100644 --- a/erts/emulator/sys/win32/erl_poll.c +++ b/erts/emulator/sys/win32/erl_poll.c @@ -1017,7 +1017,8 @@ ErtsPollEvents erts_poll_control(ErtsPollSet *ps, int erts_poll_wait(ErtsPollSet *ps, ErtsPollResFd pr[], - int *len) + int *len, + ErtsThrPrgrData *tpd) { int no_fds; DWORD timeout = INFINITE; @@ -1056,10 +1057,10 @@ int erts_poll_wait(ErtsPollSet *ps, HARDDEBUGF(("Start waiting %d [%d]",num_h, (int) timeout)); ERTS_POLLSET_UNLOCK(ps); - erts_thr_progress_prepare_wait(NULL); + erts_thr_progress_prepare_wait(tpd); ERTS_MSACC_SET_STATE_CACHED(ERTS_MSACC_STATE_SLEEP); handle = WaitForMultipleObjects(num_h, harr, FALSE, timeout); - erts_thr_progress_finalize_wait(NULL); + erts_thr_progress_finalize_wait(tpd); ERTS_MSACC_POP_STATE(); ERTS_POLLSET_LOCK(ps); HARDDEBUGF(("Stop waiting %d [%d]",num_h, (int) timeout)); |