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2015-04-22erts: Brute force float comparisons as wellBjörn-Egil Dahlberg
Increases float comparison speed by ~120%
2015-04-20erts: Fix halfword compareBjörn-Egil Dahlberg
2015-04-17Merge branch 'egil/cmp-immediate-optimization/OTP-12663'Björn-Egil Dahlberg
* egil/cmp-immediate-optimization/OTP-12663: erts: Optimize comparison operator for frequent immediates
2015-04-15erts: Optimize comparison operator for frequent immediatesBjörn-Egil Dahlberg
* small integers * atoms
2015-04-14erts: Refactor erts_queue_messageBjörn-Egil Dahlberg
2015-04-10Merge branch 'egil/fix-hash-float-zero/OTP-12641'Björn-Egil Dahlberg
* egil/fix-hash-float-zero/OTP-12641: erts: Ensure hashing of zero is consistent
2015-04-10erts: Ensure hashing of zero is consistentBjörn-Egil Dahlberg
Erlang treats positive and negative zero as equal, meaning, true = 0.0 =:= 0.0/-1 However, Erlangs hash functions: hash, phash and phash2 did not reflect this behaviour. Meaning, the hash values produced by the different hash functions would not be identical for positive and negative zero. This commit ensures that hash value of positive zero is always produced regardless of the signedness of the zero float, i.e. true = erlang:phash2(0.0) =:= erlang:phash2(0.0/-1)
2015-04-08Merge branch 'sverk/refactor-encode-size/OTP-12585'Sverker Eriksson
* sverk/refactor-encode-size/OTP-12585: erts: Optimize insert and delete for big maps erts: Optimize == and /= for unequal big maps erts: Refactor encode_size_struct_int Conflicts: erts/emulator/beam/erl_map.c
2015-03-31erts: Remove unused tmp heap in make_internal_hashBjörn-Egil Dahlberg
2015-03-30erts: Optimize == and /= for unequal big mapsSverker Eriksson
Bail out as soon as we find a diff between maps if we are not interested in term order.
2015-03-27erts: Fix make_internal_hash for 0.0 vs -0.0Björn-Egil Dahlberg
The internal_hash should produce the same hash value for identical terms, in this case 0.0 =:= -0.0.
2015-03-26erts: Fix missing case in make_internal_hashBjörn-Egil Dahlberg
2015-03-25erts: Combine flat and hash maps under one unifying tagBjörn-Egil Dahlberg
2015-03-25Merge branch 'sverk/hamt-term2bin-bug/OTP-12585'Sverker Eriksson
* sverk/hamt-term2bin-bug/OTP-12585: erts: Optimize hashmap_get erts: Remove HAMT_SUBTAG_NODE_ARRAY erts: Fix bug in binary_to_term for hamt when yielding erts: Rename to flatmap_from_validated_list
2015-03-24erts: Remove HAMT_SUBTAG_NODE_ARRAYSverker Eriksson
This will also fix a bug in term_to_binary treating full nodes as tuples and emiting LIST_EXT for leafs.
2015-03-20Merge branch 'rickard/time_api/OTP-11997'Rickard Green
* rickard/time_api/OTP-11997: (22 commits) Update primary bootstrap inets: Suppress deprecated warning on erlang:now/0 inets: Cleanup of multiple copies of functions Add inets_lib with common functions used by multiple modules inets: Update comments Suppress deprecated warning on erlang:now/0 Use new time API and be back-compatible in inets Remove unused functions and removed redundant test asn1 test SUITE: Eliminate use of now/0 Disable deprecated warning on erlang:now/0 in diameter_lib Use new time API and be back-compatible in ssh Replace all calls to now/0 in CT with new time API functions test_server: Replace usage of erlang:now() with usage of new API Replace usage of erlang:now() with usage of new API Replace usage of erlang:now() with usage of new API Replace usage of erlang:now() with usage of new API Replace usage of erlang:now() with usage of new API otp_SUITE: Warn for calls to erlang:now/0 Replace usage of erlang:now() with usage of new API Multiple timer wheels Erlang based BIF timer implementation for scalability Implement ethread events with timeout ... Conflicts: bootstrap/bin/start.boot bootstrap/bin/start_clean.boot bootstrap/lib/compiler/ebin/beam_asm.beam bootstrap/lib/compiler/ebin/compile.beam bootstrap/lib/kernel/ebin/auth.beam bootstrap/lib/kernel/ebin/dist_util.beam bootstrap/lib/kernel/ebin/global.beam bootstrap/lib/kernel/ebin/hipe_unified_loader.beam bootstrap/lib/kernel/ebin/inet_db.beam bootstrap/lib/kernel/ebin/inet_dns.beam bootstrap/lib/kernel/ebin/inet_res.beam bootstrap/lib/kernel/ebin/os.beam bootstrap/lib/kernel/ebin/pg2.beam bootstrap/lib/stdlib/ebin/dets.beam bootstrap/lib/stdlib/ebin/dets_utils.beam bootstrap/lib/stdlib/ebin/erl_tar.beam bootstrap/lib/stdlib/ebin/escript.beam bootstrap/lib/stdlib/ebin/file_sorter.beam bootstrap/lib/stdlib/ebin/otp_internal.beam bootstrap/lib/stdlib/ebin/qlc.beam bootstrap/lib/stdlib/ebin/random.beam bootstrap/lib/stdlib/ebin/supervisor.beam bootstrap/lib/stdlib/ebin/timer.beam erts/aclocal.m4 erts/emulator/beam/bif.c erts/emulator/beam/erl_bif_info.c erts/emulator/beam/erl_db_hash.c erts/emulator/beam/erl_init.c erts/emulator/beam/erl_process.h erts/emulator/beam/erl_thr_progress.c erts/emulator/beam/utils.c erts/emulator/sys/unix/sys.c erts/preloaded/ebin/erlang.beam erts/preloaded/ebin/erts_internal.beam erts/preloaded/ebin/init.beam erts/preloaded/src/erts_internal.erl lib/common_test/test/ct_hooks_SUITE_data/cth/tests/empty_cth.erl lib/diameter/src/base/diameter_lib.erl lib/kernel/src/os.erl lib/ssh/test/ssh_basic_SUITE.erl system/doc/efficiency_guide/advanced.xml
2015-03-20Multiple timer wheelsRickard Green
2015-03-20Introduce a new time APIRickard Green
The old time API is based on erlang:now/0. The major issue with erlang:now/0 is that it was intended to be used for so many unrelated things. This tied these unrelated operations together and unnecessarily caused performance, scalability as well as accuracy, and precision issues for operations that do not need to have such issues. The new API spreads different functionality over multiple functions in order to improve on this. The new API consists of a number of new BIFs: - erlang:convert_time_unit/3 - erlang:monotonic_time/0 - erlang:monotonic_time/1 - erlang:system_time/0 - erlang:system_time/1 - erlang:time_offset/0 - erlang:time_offset/1 - erlang:timestamp/0 - erlang:unique_integer/0 - erlang:unique_integer/1 - os:system_time/0 - os:system_time/1 and a number of extensions of existing BIFs: - erlang:monitor(time_offset, clock_service) - erlang:system_flag(time_offset, finalize) - erlang:system_info(os_monotonic_time_source) - erlang:system_info(time_offset) - erlang:system_info(time_warp_mode) - erlang:system_info(time_correction) - erlang:system_info(start_time) See the "Time and Time Correction in Erlang" chapter of the ERTS User's Guide for more information.
2015-03-19Merge branch 'egil/maps/hamt/OTP-12585'Björn-Egil Dahlberg
* egil/maps/hamt/OTP-12585: (113 commits) erts: Fix bug in ESTACK and WSTACK kernel: Add spec for erts_debug:map_info/1 mnesia: Update mnesia tests to reflect new ETS hash erts: Ensure maps uses _rel functions in halfword erts: Do not treat errors as fatal in erl_printf_term erts: Update preloaded erts_internal.beam erts: Add map decomposition wrappers erts: Ensure halfword has correct temp-heap for maps hipe: Handle separate hashmap tag correctly erts: Fix map bug in dec_term for 32-bit debug VM stdlib: Update qlc tests to reflect new ETS hash stdlib: Remove obsolete hashmap references in io_lib erts: Enhance maps ordering tests hipe: Fix maps sort order testcase erts: Remove unused variable in crashdump creation erts: Fix typo in copy_struct for halfword emulator erts: Restrict GCC intrinsics by compiler version erts: Fix windows bug in hashmap_info erts: Fix typo in make_hash2 for 32-bit arch Fix beam_load assert ... Conflicts: erts/emulator/beam/bif.tab
2015-03-18Merge branch 'maint'Zandra Hird
2015-03-12erts: Fix typo in make_hash2 for 32-bit archSverker Eriksson
2015-03-12erts: Cleanup comments for make_internal_hashSverker Eriksson
2015-03-12erts: Make hashmap iterator more flexibleSverker Eriksson
to allow mixing of 'next' and 'prev' operations.
2015-03-12erts: Refactor maps naming conventionSverker Eriksson
flatmap: Small map hashmap: Large map map: flatmap or hashmap
2015-03-12erts: Tweak over estimation of hashmap size for binary_to_termSverker Eriksson
Strategy: Calculate an over estimation of heap size that will give such a low probability for overflow, that "it will not happen". Scary assumption 1: Uniformly distributed hash values. Scary assumption 2: Tree size is normally distributed (right?)
2015-03-12erts: Fix erlang:hash and erlang:phash for hamtSverker Eriksson
by calling make_hash2.
2015-03-12erts: Fix compare order of hamt vs other typesSverker Eriksson
MAP_DEF and HASHMAP_DEF must have adjacent values
2015-03-12erts: Add make_internal_hashSverker Eriksson
2015-03-12erts: Make ESTACK usable through pointerBjörn-Egil Dahlberg
2015-03-12erts: Remove erl_hashmap.[ch] filesBjörn-Egil Dahlberg
2015-03-12erts: Refactor erl_hashmap header includesBjörn-Egil Dahlberg
2015-03-12erts: Change phash2 of maps to be sensitive to key-value combos.Sverker Eriksson
The old hashing did not care which value belonged to which key, for example: would hash the same.
2015-03-12erts: Add micro optimization to phash2 of tuplesSverker Eriksson
2015-03-12erts: Add hashing of hashmapsSverker Eriksson
2015-03-12erts: Make hashmap compare non-recursiveSverker Eriksson
2015-03-12erts: First recursive version of hashmap compareSverker Eriksson
2015-03-12erts: Change to total ordering of keys in small mapsSverker Eriksson
2015-03-12erts: Make WSTACK usable through pointerSverker Eriksson
2015-03-12erts: Add PSTACKSverker Eriksson
A lightweight stack that can be used to store any type. PUSH and POP return pointers into stack slots.
2015-03-12erts: Add RESERVE and FAST_PUSH for ESTACK & WSTACKSverker Eriksson
2015-03-12erts: Add matching of hashmapsSverker Eriksson
2015-02-21Fix make_hash descriptionWasif Malik
2014-12-10Merge branch 'maint'Rickard Green
* maint: Use the new 64-bit atomic ops API Introduce a 64-bit atomic ops API
2014-12-10Use the new 64-bit atomic ops APIRickard Green
2014-11-03Merge branch 'sverk/yielding-distr-send/OTP-12232'Sverker Eriksson
* sverk/yielding-distr-send/OTP-12232: erts: Add constant TERM_TO_BINARY_MEMCPY_FACTOR erts: Optimize some repeated calls to {E,W}STACK_PUSH erts: Yield in term_to_binary when encoding big maps erts: Remove unnecessary goto for fun encoding erts: Yield in term_to_binary while copying large binaries erts: Implement yielding for distributed send of large messages
2014-10-24erts: Make hipe_{un}reserve_beam_trap_frame INLINESverker Eriksson
2014-09-25Merge branch 'rickard/eager-check-io/OTP-12117' into ↵Rickard Green
rickard/maint-17/eager-check-io/OTP-12117 * rickard/eager-check-io/OTP-12117: Introduce support for eager check I/O scheduling Conflicts: erts/emulator/beam/erl_bif_info.c erts/emulator/beam/erl_init.c erts/emulator/beam/erl_process.c erts/preloaded/ebin/erlang.beam
2014-09-25Introduce support for eager check I/O schedulingRickard Green
2014-08-29erts: Optimize some repeated calls to {E,W}STACK_PUSHSverker Eriksson
2014-08-06erts: Print error reason when malloc failsLukas Larsson
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