diff options
| author | Lukas Larsson <[email protected]> | 2014-10-22 17:15:31 +0200 |
|---|---|---|
| committer | Lukas Larsson <[email protected]> | 2016-02-02 10:45:21 +0100 |
| commit | d76ee58c07f32dfc0652844ec2b513af2105ffa1 (patch) | |
| tree | ac6d50ec60414c7433508196410b22216493209d /erts/emulator/beam/erl_process.c | |
| parent | 1a6ec7c7eb20bb2b8300e7e59196c49ca63775b0 (diff) | |
| download | otp-d76ee58c07f32dfc0652844ec2b513af2105ffa1.tar.gz otp-d76ee58c07f32dfc0652844ec2b513af2105ffa1.tar.bz2 otp-d76ee58c07f32dfc0652844ec2b513af2105ffa1.zip | |
erts: Add ERTS_WRITE_UNLIKELY
ERTS_WRITE_UNLIKELY can be used to place global variables in
a specific section where only data that is very rarely modified
sits. This is used to improve cache locality.
Diffstat (limited to 'erts/emulator/beam/erl_process.c')
| -rw-r--r-- | erts/emulator/beam/erl_process.c | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/erts/emulator/beam/erl_process.c b/erts/emulator/beam/erl_process.c index 7d194f9840..3902632ef8 100644 --- a/erts/emulator/beam/erl_process.c +++ b/erts/emulator/beam/erl_process.c @@ -148,14 +148,14 @@ extern BeamInstr beam_apply[]; extern BeamInstr beam_exit[]; extern BeamInstr beam_continue_exit[]; -int erts_default_spo_flags = 0; -int erts_eager_check_io = 1; -int erts_sched_compact_load; -int erts_sched_balance_util = 0; -Uint erts_no_schedulers; +int ERTS_WRITE_UNLIKELY(erts_default_spo_flags) = 0; +int ERTS_WRITE_UNLIKELY(erts_eager_check_io) = 1; +int ERTS_WRITE_UNLIKELY(erts_sched_compact_load); +int ERTS_WRITE_UNLIKELY(erts_sched_balance_util) = 0; +Uint ERTS_WRITE_UNLIKELY(erts_no_schedulers); #ifdef ERTS_DIRTY_SCHEDULERS -Uint erts_no_dirty_cpu_schedulers; -Uint erts_no_dirty_io_schedulers; +Uint ERTS_WRITE_UNLIKELY(erts_no_dirty_cpu_schedulers); +Uint ERTS_WRITE_UNLIKELY(erts_no_dirty_io_schedulers); #endif static char *erts_aux_work_flag_descr[ERTS_SSI_AUX_WORK_NO_FLAGS] = {0}; @@ -295,7 +295,7 @@ do { \ erts_sched_stat_t erts_sched_stat; #ifdef USE_THREADS -static erts_tsd_key_t sched_data_key; +static erts_tsd_key_t ERTS_WRITE_UNLIKELY(sched_data_key); #endif static erts_smp_atomic32_t function_calls; @@ -335,10 +335,10 @@ static ErtsAlignedSchedulerSleepInfo *aligned_dirty_io_sched_sleep_info; static Uint last_reductions; static Uint last_exact_reductions; -Eterm erts_system_monitor; -Eterm erts_system_monitor_long_gc; -Uint erts_system_monitor_long_schedule; -Eterm erts_system_monitor_large_heap; +Eterm ERTS_WRITE_UNLIKELY(erts_system_monitor); +Eterm ERTS_WRITE_UNLIKELY(erts_system_monitor_long_gc); +Uint ERTS_WRITE_UNLIKELY(erts_system_monitor_long_schedule); +Eterm ERTS_WRITE_UNLIKELY(erts_system_monitor_large_heap); struct erts_system_monitor_flags_t erts_system_monitor_flags; /* system performance monitor */ |