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2018-06-18Update copyright yearHenrik Nord
2018-06-07Merge branch 'sverker/ets-auto-unfix-delete-race/OTP-15109'Sverker Eriksson
* sverker/ets-auto-unfix-delete-race/OTP-15109: erts: Fix race between ets table deletion and auto-unfix
2018-06-07erts: Fix race between ets table deletion and auto-unfixSverker Eriksson
Bug exists since ets-refs were introduced in 20.0 0d6dc895744c34c9c52fd42f4801a8a941864ae3. Problem: 1. Process A fixates table T. 2. Process B starts deleting table T (either by ets:delete or exit) and does tid_clear(). 3. Process A exits and does proc_cleanup_fixed_table() and get NULL from btid2tab() and deallocates DbFixation. 4. Process B continues deleting table in free_fixations_locked() and finds the deallocated DbFixation in the fixing_procs tree. Solution: Wait with tid_clear() until after free_fixations_locked() has traversed the fixing_procs tree.
2018-06-04erts: Increase scalability of ets name lookupSverker Eriksson
by expanding the default size of the hash table and increase number of locks.
2018-06-04erts: Rename one of delete_trap to select_delete_trapSverker Eriksson
2018-06-04erts: Refactor usage of am_atom_put to ERTS_MAKE_AMSverker Eriksson
and let compiler determine string lengths. These were actually wrong in erl_db.c: count_trap\0 replace_tra select_tra
2018-06-04erts: Add system_info(ets_count)Sverker Eriksson
2018-05-18erts: Fix narrow race between ets:new and ets:deleteSverker Eriksson
of same named table. If other process does ets:delete before ets:new has completely finished and done save_owned_table then ets:delete might do delete_owned_table and deref wild pointers in tb->common.owned.
2018-05-18Merge branch 'sverker/ets-delete_all_objects-trap/OTP-15078'Sverker Eriksson
* sverker/ets-delete_all_objects-trap/OTP-15078: erts: Rename untrapping db_free_*empty*_table erts: Make ets:delete_all_objects yield on fixed table erts: Optimize ets delete all in fixed table erts: Refactor ets select iteration code erts: Cleanup ets code erts: Optimize ets hash object deallocactions erts: Refactor pseudo deleted ets objects erts: Make atomic ets:delete_all_objects yield erts: Fix reduction bump for ets:delete/1
2018-05-08erts: Rename untrapping db_free_*empty*_tableSverker Eriksson
as it's now only used for empty tables by ets:new/2.
2018-05-08erts: Cleanup ets codeSverker Eriksson
2018-05-08erts: Make atomic ets:delete_all_objects yieldSverker Eriksson
by using a cooperative strategy that will make any process accessing the table execute delelete_all_objects_continue until the table is empty. This is not an optimal solution as concurrent threads will still block on the table lock, but at least thread progress is made.
2018-04-26erts: Optimize monitor signal by message piggybackSverker Eriksson
If no message/signal is sent (to same destination) then monitor signal is flushed when process is scheduled out.
2018-04-25erts: Fix reduction bump for ets:delete/1Sverker Eriksson
2018-04-20erts: Use table ref for select continuationSverker Eriksson
and not the name. For more sane named table semantics. Applies to both select/1 continuation and trap context.
2018-03-09Always use sys_memcpy/cmp/etc instead of plain memcpy/cmp/etcJohn Högberg
2018-02-22Add ets:whereis/1 for resolving table names -> tid()John Högberg
2017-09-12Merge branch 'maint'Sverker Eriksson
2017-09-12Merge branch 'sverker/ets-fix-assert-fix' into maintSverker Eriksson
* sverker/ets-fix-assert-fix: erts: Fix faulty ASSERT of table fixation counter
2017-09-05erts: Fix faulty ASSERT of table fixation counterSverker Eriksson
Cannot read fix->counter safely without table lock.
2017-07-17erts: Replace usage of all erts_smp prefixes to just ertsLukas Larsson
2017-07-17erts: Remove ERTS_SMP and USE_THREAD definesLukas Larsson
This refactor was done using the unifdef tool like this: for file in $(find erts/ -name *.[ch]); do unifdef -t -f defile -o $file $file; done where defile contained: #define ERTS_SMP 1 #define USE_THREADS 1 #define DDLL_SMP 1 #define ERTS_HAVE_SMP_EMU 1 #define SMP 1 #define ERL_BITS_REENTRANT 1 #define ERTS_USE_ASYNC_READY_Q 1 #define FDBLOCK 1 #undef ERTS_POLL_NEED_ASYNC_INTERRUPT_SUPPORT #define ERTS_POLL_ASYNC_INTERRUPT_SUPPORT 0 #define ERTS_POLL_USE_WAKEUP_PIPE 1 #define ERTS_POLL_USE_UPDATE_REQUESTS_QUEUE 1 #undef ERTS_HAVE_PLAIN_EMU #undef ERTS_SIGNAL_STATE
2017-07-06Allow toggling lock counting at runtimeJohn Högberg
The implementation is still hidden behind ERTS_ENABLE_LOCK_COUNT, and all categories are still enabled by default, but the actual counting can be toggled at will. OTP-13170
2017-05-04Update copyright yearRaimo Niskanen
2017-04-12erts: Introduce struct binary_internalsSverker Eriksson
to replace macro ERTS_INTERNAL_BINARY_FIELDS as header in Binary and friends.
2017-04-11erts: Introduce erts_bin_releaseSverker Eriksson
2017-03-22Use ETS table id references on select_replaceGuilherme Andrade
2017-03-22Disable ets:select_replace/2 for bagsGuilherme Andrade
The existing implementation presented both semantic inconsistencies and performance issues.
2017-03-22ETS: Allow for matchspec-based replacementGuilherme Andrade
2017-03-22erts: Improve reduction count during table cleanupSverker Eriksson
2017-03-22erts: Cleanup table status bitsSverker Eriksson
2017-03-22erts: Remove now redundant 'id' from DbTableCommonRickard Green
'the_name' keeps name of all tables. 'type' & DB_NAMED_TABLE mark tables as named. table ref id is built from magic bin when needed.
2017-03-22erts: Remove meta_main_tabSverker Eriksson
\o/ O / \ Also removed the body for CHECK_TABLES enabled by HARDDEBUG. Removed quite useless check for hash, but kept dead check code for tree.
2017-03-22erts: Pass tid argument down to trapping functionsSverker Eriksson
to get rid of meta table lookup by integer (tb->common.id)
2017-03-22erts: Print table id as ref in crashdump and break menuSverker Eriksson
2017-03-22erts: Replace meta_pid_to{_fixed}_tab with linked listsSverker Eriksson
from process psd through all owned/fixed tables. As meta_pid_to{_fixed}_tab maps to slot in meta_main_tab which is planned for destruction. In this commit we no longer seize table lock while freeing the table (free_table_cont) as it's not needed and makes the code a bit simpler. Any concurrent operation on the table will only access lock, owner and status and then bail out.
2017-03-02Implement ets:all() using scheduler specific dataRickard Green
2017-03-02Rename fixation count in ets table to avoid confusionRickard Green
2017-03-02Introduce references as table identifiersRickard Green
2017-02-06Use magic refs for compiled match specsRickard Green
2017-02-06Merge branch 'maint'Rickard Green
* maint: Atomic reference count of binaries also in non-SMP Conflicts: erts/emulator/beam/erl_fun.c
2017-02-06Atomic reference count of binaries also in non-SMPRickard Green
NIF resources was not handled in a thread-safe manner in the runtime system without SMP support. As a consequence of this fix, the following driver functions are now thread-safe also in the runtime system without SMP support: - driver_free_binary() - driver_realloc_binary() - driver_binary_get_refc() - driver_binary_inc_refc() - driver_binary_dec_refc()
2016-11-22Merge branch 'maint'Sverker Eriksson
2016-11-17erts: Refactor crash dumping with cbprintfSverker Eriksson
Instead of passing around a file descriptor use a function pointer to facilitate more advanced backend write logic such as size limitation or compression.
2016-09-21Merge branch 'sverker/ets-load-factor/OTP-13903'Sverker Eriksson
* sverker/ets-load-factor: erts: Unify reduction count for ets:select stdlib: Cuddle ets_SUITE for valgrind stdlib: Fix ets_SUITE:smp_select_delete erts: Tweak ets grow/shrink to keep up at contention erts: Fix ets_SUITE:memory erts: Suppress failed ETS memory checks erts: Reduce ets hash load factor erts: Enable a smaller first hash segment for ets erts: Redesign ets with separate segment tables erts: Remove unnecessary access of 'is_resizing' erts: Add ErtsSizeofMember macro erts: Add ErtsContainerStruct_ for array members
2016-09-19erts: Suppress failed ETS memory checksSverker Eriksson
due to the grow/shrink hysteresis of the meta tables
2016-08-07Correct spelling of atomicityMahesh Baheti
2016-05-11Add better support for communication with a process executing dirty NIFRickard Green
- Termination of a process... - Modify trace flags of process... - Process info on process... - Register/unregister of name on process... - Set group leader on process... ... while it is executing a dirty NIF.
2016-05-04erts: Add matchspec to 'receive' traceSverker Eriksson
2016-03-15update copyright-yearHenrik Nord