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2017-12-19Merge branch 'dgud/kernel/refc_sched_wall_time/OTP-11694'Dan Gudmundsson
* dgud/kernel/refc_sched_wall_time/OTP-11694: test: spawn scheduler_wall_time flag holder Turn on scheduler_wall_time in an alive process Redirect system_flag(scheduler_wall_time,_) to kernel_refc kernel: add a resource reference counter
2017-12-19Redirect system_flag(scheduler_wall_time,_) to kernel_refcRickard Green
2017-11-30Reimplement efile_drv as a dirty NIFJohn Högberg
This improves the latency of file operations as dirty schedulers are a bit more eager to run jobs than async threads, and use a single global queue rather than per-thread queues, eliminating the risk of a job stalling behind a long-running job on the same thread while other async threads sit idle. There's no such thing as a free lunch though; the lowered latency comes at the cost of increased busy-waiting which may have an adverse effect on some applications. This behavior can be tweaked with the +sbwt flag, but unfortunately it affects all types of schedulers and not just dirty ones. We plan to add type-specific flags at a later stage. sendfile has been moved to inet_drv to lessen the effect of a nasty race; the cooperation between inet_drv and efile has never been airtight and the socket dying at the wrong time (Regardless of reason) could result in fd aliasing. Moving it to the inet driver makes it impossible to trigger this by closing the socket in the middle of a sendfile operation, while still allowing it to be aborted -- something that can't be done if it stays in the file driver. The race still occurs if the controlling process dies in the short window between dispatching the sendfile operation and the dup(2) call in the driver, but it's much less likely to happen now. A proper fix is in the works. -- Notable functional differences: * The use_threads option for file:sendfile/5 no longer has any effect. * The file-specific DTrace probes have been removed. The same effect can be achieved with normal tracing together with the nif__entry/nif__return probes to track scheduling. -- OTP-14256
2017-11-30Add a mutable binary buffer type (prim_buffer)John Högberg
2017-11-20Merge branch 'lukas/stdlib/maps_iterators/OTP-14012'Lukas Larsson
* lukas/stdlib/maps_iterators/OTP-14012: erts: Limit size of first iterator for hashmaps Update primary bootstrap Update preloaded modules erts: Remove erts_internal:maps_to_list/2 stdlib: Make io_lib and io_lib_pretty use maps iterator erts: Implement batching maps:iterator erts: Implement maps path iterator erts: Implement map iterator using a stack stdlib: Introduce maps iterator API Conflicts: bootstrap/lib/stdlib/ebin/io_lib.beam bootstrap/lib/stdlib/ebin/io_lib_pretty.beam erts/emulator/beam/bif.tab erts/preloaded/ebin/erlang.beam erts/preloaded/ebin/erts_internal.beam erts/preloaded/ebin/zlib.beam
2017-11-20Update preloaded modulesLukas Larsson
2017-11-20erts: Remove erts_internal:maps_to_list/2Lukas Larsson
This function is no longer needed as maps:iterator has now been implemented.
2017-11-20erts: Implement batching maps:iteratorLukas Larsson
This iterator implementation fetches multiple elements to iterate over in one call to erts_internal:maps_next instead of one at a time. This means that the memory usage will go up for the iterator as we are buffering elements, but the usage is still bounded. In this implementation the max memory usage is 1000 words. Using this approach makes the iterator as fast as using maps:to_list, so maps:iterator/2 has been removed.
2017-11-15Move new|abort_connection_id to erts_internalSverker Eriksson
and drop _id suffix.
2017-11-15Cleanup net_kernelSverker Eriksson
2017-11-15fix erlang specs and preloadedSverker Eriksson
2017-11-15Remove obsolete erlang:dgroup_leaderSverker Eriksson
2017-11-15Remove obsolete erlang:dexit/2Sverker Eriksson
2017-11-15Remove obsolete erlang:dlink/1, dunlink/1 and dist_exit/3Sverker Eriksson
2017-11-15Remove obsolete erlang:dsendSverker Eriksson
2017-11-15erts: Async auto-connect for monitor/2Sverker Eriksson
2017-11-15erts: Async auto-connect for monitor_nodeSverker Eriksson
Removed distribution_SUITE:applied_monitor_node as it seems to test apply of trapping BIF and monitor_node does not trap anymore.
2017-11-15erts: Introduce asynchronous auto-connectSverker Eriksson
2017-11-15Merge PR-1605 from sverker/sverker/binary_to_term-used OTP-14780Sverker Eriksson
Add 'used' option for binary_to_term/2
2017-11-10Merge branch 'maint'Ingela Anderton Andin
* maint: Updated OTP version Update release notes Update version numbers inets: Prepare for release inets: Add missing guard Avoid WindowBits=8 as per the manual Fix deflateParams on zlib 1.2.11 Ignore empty binaries in enif_inspect_iovec Emasculate writable binaries on entering an iovec Only apply EOS behaviors if there's pending data Conflicts: OTP_VERSION
2017-11-09Fix deflateParams on zlib 1.2.11John Högberg
1.2.11 started bailing when avail_out==0 regardless of whether there's anything to flush or not, and there's no point in adapting the old method since it was vulnerable to bugs in other zlib versions which updated the deflate parameters even on failure. The api_deflateParams test has been expanded accordingly, and two white-box cases in zip_usage has been updated to make fewer assumptions about the output; the validity of the compressed data is what matters, not whether it's exactly the same as the test vector.
2017-10-25Merge branch 'maint'John Högberg
* maint: Updated OTP version Update release notes Update version numbers erts: Fix so that bind correct schedulers Update version Fix error handling when decoding an AVP with an alternate dictionary Remove unused function arguments Fix faulty recursion vsn -> 2.1.2 Update appup for ERIERL-14684 Fix speling error 'sndbuf' -> 'recbuf' Add zlib:set_controlling_process/2
2017-10-17erts: Add 'used' option to binary_to_term/2Sverker Eriksson
2017-10-13erts: Implement maps path iteratorLukas Larsson
2017-10-12Merge branch 'rickard/null-chars/ERL-370/OTP-14543'Rickard Green
* rickard/null-chars/ERL-370/OTP-14543: Don't allow null chars in various strings Conflicts: erts/emulator/beam/erl_alloc.types erts/preloaded/ebin/erlang.beam
2017-10-12Merge branch 'maint'Rickard Green
* maint: Revert "Merge branch 'rickard/null-char-filenames/ERL-370/OTP-14543' into maint"
2017-10-12Revert "Merge branch 'rickard/null-char-filenames/ERL-370/OTP-14543' into maint"Rickard Green
This reverts commit 0717a2194e863f3a78595184ccc5637697f03353, reversing changes made to 71a40658a0cef8b3e25df3a8e48a72d0563a89bf.
2017-10-11Don't allow null chars in various stringsRickard Green
Various places that now reject null chars inside strings - Primitive file operations reject it in filenames. - Primitive environment variable operations reject it in names and values. - os:cmd() reject it in its input. Also '=' characters are rejected by primitive environment variable operations in environment variable names. Documentation has been updated to document null characters in these types of data as invalid. Currently these operations accept null chars at the end of strings, but that will change in the future.
2017-10-11Add zlib:set_controlling_process/2John Högberg
2017-10-05Merge branch 'lukas/erts/poll-thread/OTP-14346'Lukas Larsson
* lukas/erts/poll-thread/OTP-14346: erts: Update +IOt and msacc docs
2017-10-03Merge branch 'maint'Hans Nilsson
* maint: Updated OTP version Prepare release Fix zlib merge snafu ssh: fix broken printouts ssh: exclude aes_gcm if peer is OpenSSH 6.2 (known bug) Conflicts: OTP_VERSION
2017-10-03Merge branch 'maint-20' into maintHans Nilsson
* maint-20: Updated OTP version Prepare release Fix zlib merge snafu ssh: fix broken printouts ssh: exclude aes_gcm if peer is OpenSSH 6.2 (known bug)
2017-10-02Fix zlib merge snafuJohn Högberg
I accidentally merged a few fixes directly to maint-20 (and then to maint and master), instead of merging to maint and master and waiting for a patch to merge it into maint-20, leaving the related tickets dangling. This commit does nothing beyond getting the tickets (and their release notes) into the next patch.
2017-10-02Merge branch 'maint'John Högberg
2017-10-02Merge branch 'maint-20' into maintJohn Högberg
2017-10-02erts: Update +IOt and msacc docsLukas Larsson
2017-10-02Merge branch 'maint'Rickard Green
* maint: Don't allow null in filenames
2017-09-29Fix gunzip/1 of concatenated gzip filesJohn Högberg
Quoting RFC 1952: "A gzip file consists of a series of "members" (compressed data sets). [...] The members simply appear one after another in the file, with no additional information before, between, or after them."
2017-09-29Fix minor incompatibilities in inflate behaviorJohn Högberg
When presented with multiple valid but concatenated streams, the old driver returned an empty result once the end of the first stream was reached, and kept doing so even if fed new data. The new driver/NIF returned a data_error instead. zlib:inflateInit/3 has been added to control this behavior, but is not yet ready for public use.
2017-09-27Don't allow null in filenamesRickard Green
2017-09-06Merge branch 'maint' into john/erts/merge-zlib-and-vector-qJohn Högberg
2017-09-06Merge branch 'maint' into john/erts/merge-zlib-and-vector-qJohn Högberg
2017-09-05Improve zlib error messages and update test suite to fitJohn Högberg
OTP-14527
2017-09-05Replace the zlib driver with a NIFJohn Högberg
All operations will now yield appropriately, allowing them to be used freely in concurrent applications. This commit also deprecates the functions listed below, although they won't raise deprecation warnings until OTP 21: zlib:adler32 zlib:crc32 zlib:inflateChunk zlib:getBufSize zlib:setBufSize The behavior of throwing an error when a dictionary is required for decompression has also been deprecated.
2017-09-05erts: Add erlang:iolist_to_iovecLukas Larsson
OTP-14520
2017-08-28Merge branch 'rickard/dist/OTP-14459' into rickard/dist/master/OTP-14459Rickard Green
Conflicts: erts/emulator/beam/bif.c erts/emulator/beam/dist.c erts/emulator/beam/dist.h erts/emulator/beam/erl_bif_info.c erts/emulator/beam/erl_node_tables.c erts/emulator/beam/erl_node_tables.h erts/emulator/beam/external.c
2017-08-28Support for distribution controller processesRickard Green
2017-06-20Update preloaded modulesHans Nilsson
2017-06-14Update preloaded modulesRickard Green
2017-05-19Make statistics/1 aware of dirty run-queues and tasksRickard Green