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2018-10-26Inline erts_cmpJohn Högberg
This greatly increases the performance of '--'/2 which does a lot of term comparisons.
2018-08-07Fixed #Ref ordering bugSimon Cornish
2018-06-18Update copyright yearHenrik Nord
2018-06-11Merge branch 'lukas/kernel/logger-config/OTP-13295'Lukas Larsson
* lukas/kernel/logger-config/OTP-13295: erts: Fix emulator log messages to use erlang:system_time kernel: Add LOGGER_SERVER_TAG to logger_server
2018-06-05erts: Fix emulator log messages to use erlang:system_timeLukas Larsson
This was changed in the logger in 8aa64c90ddd20ec0ca8cc5fe92a6124324c51da5.
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
2018-04-26Remove error_logger process and add logger processSiri Hansen
2018-04-24mikpe/erts-logger-integer-truncation/PR-1795/OTP-15032Lukas Larsson
fix integer truncation bugs in error logger path
2018-04-21fix integer truncation bugs in error logger pathMikael Pettersson
Sending a large term to the error logger has two problems related to the size and sign of the variables used to represent lengths: - the API functions (erts_send_error_term_to_logger() et al) perform an unchecked narrowing conversion from size_t to int when passing dsbufp->str_len to the internal functions; this may both truncate the length and make it negative - do_send_term_to_logger() and do_send_to_logger() multiply the int-typed length by 2 before widening it to Uint and adding a few more values; the intermediate product may overflow causing loss of high bits and a change of sign; if the intermediate product is negative the final size will be an extremely large positive value The end result is that the computed buffer size can be arbitrarily wrong, either too small or too large. While reviewing this code I also found and fixed a potential narrowing bug in erts_set_hole_marker().
2018-04-12New process_info() implementation using signalsRickard Green
2018-02-08Optimize non-strict equality check of binaries differing in sizePhilip Stears
This commit brings the perform of a non-strict equality check of binaries into the same range as strict ones. Currently, these checks can be significantly slower because they go through the general comparison code which doesn't have an optimization to check the size before comparing contents in the case that it's checking equality.
2018-01-03Replace the libc environment with a thread-safe emulationJohn Högberg
putenv(3) and friends aren't thread-safe regardless of how you slice it; a global lock around all environment operations (like before) keeps things safe as far as our own operations go, but we have absolutely no control over what libc or a library dragged in by a driver/NIF does -- they're free to call getenv(3) or putenv(3) without honoring our lock. This commit solves this by setting up an "emulated" environment which can't be touched without going through our interfaces. Third-party libraries can still shoot themselves in the foot but benign uses of os:putenv/2 will no longer risk crashing the emulator.
2017-09-06Merge branch 'maint' into john/erts/merge-zlib-and-vector-qJohn Högberg
2017-09-06Merge branch 'lukas/erts/nif_vector_q/OTP-14598' into maintJohn Högberg
OTP-14520
2017-09-05erts: Add nif ioqLukas Larsson
2017-08-23Merge branch 'maint'Rickard Green
* maint: Unicode support for erlang:display_string/1
2017-08-23Merge branch 'rickard/unicode-display_string/OTP-14545' into maintRickard Green
* rickard/unicode-display_string/OTP-14545: Unicode support for erlang:display_string/1
2017-08-23Unicode support for erlang:display_string/1Rickard Green
2017-08-23Merge branch 'maint'Sverker Eriksson
2017-08-23Merge branch 'sverker/halt-unicode-slogan/OTP-14553' into maintSverker Eriksson
* sverker/halt-unicode-slogan/OTP-14553: erts: Allow any unicode string as crash dump slogan erts: Generate crash_dump slogan string as UTF8 erts: Refactor erts_unicode_list_to_buf
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
2017-07-06erts: Refactor erts_unicode_list_to_bufSverker Eriksson
to get bytes written when truncated.
2017-05-18Make lock counter info independent of the locks being countedJohn Högberg
This allows us to enable/disable lock counting at will, and greatly improves the performance of erts_debug:lock_counters/1 since we no longer have to worry about the lock counters "dying" while we're enumerating them. OTP-14412
2017-05-04Update copyright yearRaimo Niskanen
2017-04-28Merge PR1413 from g-andrade/feature/phash2_nifSverker Eriksson
Support hashing terms from NIF code
2017-04-27erts: Optimize make_internal_hash for mapsSverker Eriksson
No need for the xor-trick, to be order independent, as both flatmaps and hashmaps have a constant key-value order internally.
2017-04-25Merge branch 'sverker/refactor'Sverker Eriksson
* sverker/refactor: erts: Introduce struct binary_internals erts: Introduce erts_bin_release erts: Init refc=1 in erts_bin_drv_alloc* erts: Init refc=1 in erts_bin_nrml_alloc erts: Remove deliberate leak of hipe fun entries erts: Remove hipe_bifs:remove_refs_from/1 Refactor hipe specific code to use ErtsCodeInfo erts: Refactor ErtsCodeInfo.native
2017-04-24erts: Discontinue salted use of enif_hash/phash2Guilherme Andrade
2017-04-22erts: Support custom salt in enif_hashGuilherme Andrade
2017-04-20erts: Remove enif_phash2_rangedGuilherme Andrade
2017-04-19erts: Add enif_phash2 and enif_phash2_rangedGuilherme Andrade
These allow one to hash VM terms from NIF code.
2017-04-12erts: Introduce struct binary_internalsSverker Eriksson
to replace macro ERTS_INTERNAL_BINARY_FIELDS as header in Binary and friends.
2017-04-11Merge branch 'rickard/pcre-8.40'Rickard Green
OTP-14331 * rickard/pcre-8.40: Update documentation Update README.pcre_update.md Stack guard for PCRE Adjust for incompatibility between PCRE 8.40 and perl 5.22.1 Generate re replacement and split tests with perl vsn 5.22.1 Fix re_SUITE:pcre_compile_workspace_overflow/1 Skip line with lockout of modifiers in PCRE tests Update tests for PCRE version 8.40 Update PCRE to version 8.40 Conflicts: erts/emulator/beam/beam_debug.c
2017-04-07Stack guard for PCRERickard Green
2017-03-10Update copyright yearRickard Green
2017-02-06Add binary overhead for magic ref/binariesRickard Green
2017-02-06Implement magic referencesRickard Green
Magic references are *intentionally* indistinguishable from ordinary references for the Erlang software. Magic references do not change the language, and are intended as a pure runtime internal optimization. An ordinary reference is typically used as a key in some table. A magic reference has a direct pointer to a reference counted magic binary. This makes it possible to implement various things without having to do lookups in a table, but instead access the data directly. Besides very fast lookups this can also improve scalability by removing a potentially contended table. A couple of examples of planned future usage of magic references are ETS table identifiers, and BIF timer identifiers. Besides future optimizations using magic references it should also be possible to replace the exposed magic binary cludge with magic references. That is, magic binaries that are exposed as empty binaries to the Erlang software.
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()
2017-02-01Merge branch 'josevalim/atu8-chunk/PR-1078/OTP-14178'Björn Gustavsson
* josevalim/atu8-chunk/PR-1078/OTP-14178: Add new AtU8 beam chunk
2017-01-30Add new AtU8 beam chunkJosé Valim
The new chunk stores atoms encoded in UTF-8. beam_lib has also been modified to handle the new 'utf8_atoms' attribute while the 'atoms' attribute may be a missing chunk from now on. The binary_to_atom/2 BIF can now encode any utf8 binary with up to 255 characters. The list_to_atom/1 BIF can now accept codepoints higher than 255 with up to 255 characters (thanks to Björn Gustavsson).
2017-01-25erts: Remove broken hash from ErlangBjörn-Egil Dahlberg
erlang:hash/2 has been deprecated for a while, time to remove it.
2017-01-12Support for dirty BIFsRickard Green
2016-11-22Merge branch 'maint'Sverker Eriksson
2016-11-17erts: Tweak PSTACK to avoid warningSverker Eriksson
warning: array subscript is below array bounds and ok, it's technically undef behavior to set pointer before first array element.
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.
2016-10-12erts: Refactor out func_info into structLukas Larsson
This commit adds two new structs to be used to represent erlang code in erts. ErtsCodeInfo is used to describe the i_func_info header that is part of all Export entries and the prelude of each function. This replaces all the BeamInstr * that were previously used to point to these locations. After this change the code should never use BeamInstr * with offsets to figure out different parts of the func_info header. ErtsCodeMFA is a struct that is used to descripe a MFA in code. It is used within ErtsCodeInfo and also in Process->current. All function that previously took Eterm * or BeamInstr * to identify a MFA now use the ErtsCodeMFA or ErtsCodeInfo where appropriate. The code has been tested to work when adding a new field to the ErtsCodeInfo struct, but some updates are needed in ops.tab to make it work.
2016-08-30Ensure correct mbuf_sz value in process structureRickard Green
2016-07-21erts: Fix internal hashing entropy for mapsBjörn-Egil Dahlberg
We need to use an initial hash seed for each map pair, i.e. the hash value. The hash value is reset to the seed for each pair instead of setting the seed to zero. If we don't, no additional entropy is given to the system and the hash collision resolution in maps:from_list/1 would fail.