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* rickard/ethread-rewrite/OTP-8544:
Rewrite ethread library
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Large parts of the ethread library have been rewritten. The
ethread library is an Erlang runtime system internal, portable
thread library used by the runtime system itself.
Most notable improvement is a reader optimized rwlock
implementation which dramatically improve the performance of
read-lock/read-unlock operations on multi processor systems by
avoiding ping-ponging of the rwlock cache lines. The reader
optimized rwlock implementation is used by miscellaneous
rwlocks in the runtime system that are known to be read-locked
frequently, and can be enabled on ETS tables by passing the
`{read_concurrency, true}' option upon table creation. See the
documentation of `ets:new/2' for more information.
The ethread library can now also use the libatomic_ops library
for atomic memory accesses. This makes it possible for the
Erlang runtime system to utilize optimized atomic operations
on more platforms than before. Use the
`--with-libatomic_ops=PATH' configure command line argument
when specifying where the libatomic_ops installation is
located. The libatomic_ops library can be downloaded from:
http://www.hpl.hp.com/research/linux/atomic_ops/
The changed API of the ethread library has also caused
modifications in the Erlang runtime system. Preparations for
the to come "delayed deallocation" feature has also been done
since it depends on the ethread library.
Note: When building for x86, the ethread library will now use
instructions that first appeared on the pentium 4 processor. If
you want the runtime system to be compatible with older
processors (back to 486) you need to pass the
`--enable-ethread-pre-pentium4-compatibility' configure command
line argument when configuring the system.
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OTP-8751
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OTP-8750
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The code for generating the string table (which is now
only used for bit syntax matching) in a BEAM file is quite
complicated and potentially expensive when compiling modules
with many thousands of clauses doing bit syntax matching.
Simplify and optimize the code using bit syntax and
binary:match/2 instead of the list operations in the
original code.
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When configuring erlang with --enable-native-libs, some core modules are
compiled with hipe, yet because they are loaded before the code server,
their native code is not loaded. The fix consists in quietly trying to
load the native code for all loaded modules just after the code server
is started.
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* egil/fix-edoc-deprecations/OTP-8749:
Fix deprecated references to http:request/4 in edoc
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* egil/clean-inviso-warnings/OTP-8747:
Update guards to the modern interface
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- Removed unused variable in ei_decode_term.c
- Fixed faulty deallocation
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Fix typos and other errors.
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* sverker/one_offheap_list/OTP-8737:
One off-heap list, to eliminate two words per ETS object.
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Merging the three off-heap lists (binaries, funs and externals) into
one list. This reduces memory consumption by two words (pointers) per
ETS object.
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* sverker/ets_select_hang/OTP-8732:
Fix ets:select hanging on ordered_set with empty list as key.
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* sverker/full_INTEGER_EXT/OTP-8540:
term_to_binary use all 32 bits of INTEGER_EXT
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Changed return types from "binary" to "binary()"
for md5_mac, md5_mac_96, sha_mac and sha_mac_96.
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erl_db_tree.c incorrectly used NIL (empty list) as "lastkey" to mark
start of the iteration. A real NIL key could then cause a
select or match iteration to be restarted over and over again if the
last key before a trap happended to be NIL.
Changed NIL to THE_NON_VALUE. Should be ok as the initial key value can
never be put into any continuation tuple.
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* 'peppe/common_test/dev/OTP-8725' of super:peppe_otp:
Fix bug that crashes common_test when running cover
Bump version numbers for common_test and test_server
Add documentation for group specifications and for the label option
Improve handling of test case group specifications
Add textured backgound to html log files
Improve handling of test case group specifications
Add new option to label test runs
Implement handling of group specifications
Fix problem with using the wrong logdir setting
Rewrite handling of group definitions in Common Test test suites
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The code handling this BIF did not take into account that
the fun in the first argument that could return []
and therefore the return value of the BIF could also be [].
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* rani/sctp-udp-recv-error:
Fix inet_drv to detect passive mode UDP errors for SCTP builds
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Debug and patch by Per Hedeland for R13B04 on erlang-patches:
Connected UDP (and handling of any other errors in UDP recv())
is broken in passive mode for all SCTP-enabled builds.
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* pg/beam_lib_cmp_2_return_type_specification:
Fix beam_lib:cmp/2 return type specification
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* ta/filetypo:
Correct trivial typos in file manual
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* ks/auth-specs:
auth: Fix types and specs
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* cf/timer_tc:
Add timer:tc/2 to measure the elapsed time of anonymous functions
Conflicts:
lib/stdlib/doc/src/timer.xml
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* gl/jinterface-pom:
Generate pom.xml during jinterface build
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* ks/cleanups:
compiler: Fix incorrect types and specs
escript: Add more types to records
debugger: Clean up as suggested by tidier
docbuilder: Clean up as suggested by tidier
Conflicts:
lib/debugger/src/dbg_iload.erl
lib/debugger/src/dbg_ui_trace_win.erl
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Still a few things missing:
* Documentation
* More tests
* Fix old broken test cases
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The overview html log files now have a textured background. This default new look can be switched off with the 'basic_html' option.
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With the option 'label', the test run gets a user defined name that Common Test prints in the overview log files.
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It's possible now to specify execution of test case groups (and test cases within groups) by means of run_test options and test specification terms. From test specifications, groups (and test cases) may also be skipped.
ct_run has been improved to report errors better.
New test suites have been introduced.
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The default logdir value "." overrides setting in test specification if logdir start flag/option is missing.
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This is to enable execution of specific groups, and/or test cases within groups, by means of run_test options or test specifications.
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Earlier, external format INTEGER_EXT was only produced for 28-bit
signed integers. Now full 32-bit signed integers are produced as
INTEGER_EXT to avoid the more costly SMALL_BIG_EXT format. Both old
and new code can read 32-bit INTEGER_EXT.
Also fixed integer encoding bugs in erl_interface erl_encode/erl_decode.
(Thanks to Alexander Demidenko for reporting)
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