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2010-12-01Merge branch 'rickard/load-balance-wrap/OTP-8950' into devRickard Green
* rickard/load-balance-wrap/OTP-8950: Prevent wrapping of values used during load balancing
2010-12-01Prevent wrapping of values used during load balancingRickard Green
Some integer values used during load balancing could under rare circumstances wrap causing a load unbalance between schedulers.
2010-12-01Merge branch 'rickard/rwmutex-bug/OTP-8925' into devRickard Green
* rickard/rwmutex-bug/OTP-8925: Miscellaneous rwmutex bug fixes and improvements Don't use more reader groups than schedulers New test suite containing stress tests of the rwmutex implementation Conflicts: erts/emulator/beam/erl_init.c
2010-12-01Don't use more reader groups than schedulersRickard Green
2010-12-01New test suite containing stress tests of the rwmutex implementationRickard Green
2010-11-30Merge branch 'sverker/unsafe_CancelIoEx/OTP-8937' into devSverker Eriksson
* sverker/unsafe_CancelIoEx/OTP-8937: Let port_SUITE:close_deaf_port wait for OS procs
2010-11-30Let port_SUITE:close_deaf_port wait for OS procsSverker Eriksson
2010-11-29Merge branch 'sverker/unsafe_CancelIoEx/OTP-8937' into devSverker Eriksson
* sverker/unsafe_CancelIoEx/OTP-8937: Improve test case port_SUITE:close_deaf_port
2010-11-29Improve test case port_SUITE:close_deaf_portSverker Eriksson
2010-11-29Merge branch 'jr/windows-file-append' into devPatrik Nyblom
* jr/windows-file-append: Fix appending to large files (>4GB) on Windows OTP-8958
2010-11-29Merge branch 'bw/win32-file-linking' into devPatrik Nyblom
* bw/win32-file-linking: Add Win32 support for hard and symbolic file system links OTP-8955
2010-11-26Merge branch 'sverker/halfword-testcases/OTP-8884' into devSverker Eriksson
* sverker/halfword-testcases/OTP-8884: NIF 64-bit integer get/make bugfix for halfword emulator. Teach erl_alloc.c not to disable internal allocators for halfword
2010-11-26Merge branch 'sverker/unsafe_CancelIoEx/OTP-8937' into devSverker Eriksson
* sverker/unsafe_CancelIoEx/OTP-8937: Remove use of unreliable CancelIoEx on Windows.
2010-11-25NIF 64-bit integer get/make bugfix for halfword emulator.Sverker Eriksson
2010-11-25Teach erl_alloc.c not to disable internal allocators for halfwordPatrik Nyblom
2010-11-24Merge branch 'sverker/ets_compress/OTP-8922' into devSverker Eriksson
* sverker/ets_compress/OTP-8922: ETS 'compressed' option.
2010-11-24Merge branch 'sverker/crypto_aes_ctr_cmac/OTP-8752' into devSverker Eriksson
* sverker/crypto_aes_ctr_cmac/OTP-8752: Fix nif_SUITE to not assume that it is the only one loading NIFs. crypto CTR support
2010-11-24Remove use of unreliable CancelIoEx on Windows.Sverker Eriksson
CancelIoEx has been seen to cause problems with some drivers. Also improve fallback solution to reuse existing handle-closer-threads.
2010-11-22ETS 'compressed' option.Sverker Eriksson
The compressed format is using a slighty modified variant of the extern format (term_to_binary). To not worsen key lookup's too much, the top tuple itself and the key element are not compressed. Table objects with only immediate non-key elements will therefor not gain anything (but actually consume one extra word for "alloc_size").
2010-11-22Fix nif_SUITE to not assume that it is the only one loading NIFs.Sverker Eriksson
2010-11-22Merge branch 'rickard/thr-spec-inet-buf/OTP-8916' into devRickard Green
* rickard/thr-spec-inet-buf/OTP-8916: Remove tight restrictions on some options Thread specific inet driver buffer stack
2010-11-18Remove tight restrictions on some optionsRickard Green
Remove tight restrictions on the high_watermark, low_watermark, and buffer options.
2010-11-18Thread specific inet driver buffer stackRickard Green
The inet driver internal buffer stack implementation has been rewritten in order to reduce lock contention.
2010-11-18Merge branch 'rickard/cpu-groups/OTP-8861' into devRickard Green
* rickard/cpu-groups/OTP-8861: Generalize reader groups Move cpu topology functionality into erl_cpu_topology.[ch] Do not use more reader groups for schedulers than schedulers Conflicts: erts/emulator/beam/erl_init.c
2010-11-18Generalize reader groupsRickard Green
Reader groups have been generalized to cpu groups which can be used for implementing reader groups, but also for implementing other functionality in the future.
2010-11-18Move cpu topology functionality into erl_cpu_topology.[ch]Rickard Green
2010-11-18Do not use more reader groups for schedulers than schedulersRickard Green
When the runtime system had fewer schedulers than logical processors, the system could get an unnecessarily large amount reader groups.
2010-11-18Merge branch 'rickard/sys_schedule_debug' into devRickard Green
* rickard/sys_schedule_debug: Verify that no outstanding I/O exist when checking for I/O in debug build
2010-11-18Verify that no outstanding I/O exist when checking for I/O in debug buildRickard Green
2010-11-18Merge branch 'pg/fix-system_info-cpu_topology-segfault' into devRickard Green
* pg/fix-system_info-cpu_topology-segfault: Fix crash with erlang:system_info({cpu_topology,junk}) OTP-8914
2010-11-18Merge branch 'rickard/sched-misc/OTP-8932' into devRickard Green
* rickard/sched-misc/OTP-8932: Fix erts_schedule_misc_op() so it can be called from arbitrary threads
2010-11-18Merge branch 'rickard/halfword-fix/OTP-8910' into devRickard Green
* rickard/halfword-fix/OTP-8910: Fix ERL_DRV_INT and ERL_DRV_UINT in halfword emulator
2010-11-18Merge branch 'rickard/dist/OTP-8901' into devRickard Green
* rickard/dist/OTP-8901: Be less eager to set dist entry in busy state
2010-11-18Merge branch 'rickard/tsd-get/OTP-8889' into devRickard Green
* rickard/tsd-get/OTP-8889: Fix erl_drv_tsd_get() and enif_tsd_get()
2010-11-10Fix erts_schedule_misc_op() so it can be called from arbitrary threadsRickard Green
Tracing to port could cause an emulator crash when unloading the trace driver.
2010-11-09Delete decommented codeRaimo Niskanen
2010-11-09Implement inet:getifaddrs/0 on WindowsRaimo Niskanen
2010-11-09Implement basic inet:getifaddrs/0Raimo Niskanen
2010-11-09Fix building error of SCTP in FreeBSD 7.1 and laterKenji Rikitake
This patch fixes building error of SCTP in FreeBSD 7.1 and later. See http://www.erlang.org/cgi-bin/ezmlm-cgi?2:mss:1257:200904:hppnfialjjdlgecdiehe for the details. R13A patch for solving a compilation error when building erts/emulator/drivers/common/inet_drv.c by Kenji Rikitake 12-APR-2009 Symptom solved by this patch: When building R13A in FreeBSD 7.1-RELEASE, the compiler flag HAVE_STRUCT_SCTP_PADDRPARAMS_SPP_SACKDELAY is NOT enabled. Some code in erts/emulator/drivers/common/inet_drv.c incorrectly assumes HAVE_STRUCT_SCTP_PADDRPARAMS_SPP_SACKDELAY is always true when HAVE_STRUCT_SCTP_PADDRPARAMS_SPP_FLAGS is true in config.h. This assumption causes a compilation error.
2010-11-02Be less eager to set dist entry in busy stateRickard Green
The runtime system is now less eager to suspend processes sending messages over the distribution. The default value of the distribution buffer busy limit has also been increased from 128 KB to 1 MB. This in order to improve throughput.
2010-11-02Add flag-based setting for the distribution buffer busy limitScott Lystig Fritchie
Id: OTP-8912 This patch creates a new family of flags with the "+z" prefix. It further creates a new configuration option called "dbbl" (which is the first letter of the name dist_buf_busy_limit). Example usage of this flag would be "+zdbbl 1048576". This patch creates an adjustable buffer limit for the amount of data that may be buffered by the erlang distribution code (in dist.c specifically). Before this patch, this hard-coded constant was used: #define ERTS_DE_BUSY_LIMIT (128*1024) When large binaries are transmitted between nodes (or simply a lot of medium-sized binaries), it is very easy to hit the old 128KB limit. Processes that use the erlang:system_monitor() BIF to monitor system events can be spammed by {monitor, busy_dist_port, ...} message tuples at rates of tens to even hundreds of messages/second. A larger buffer limit will allow processes to buffer more outgoing messages over the distribution. When the buffer limit has been reached, sending processes will be suspended until the buffer size has shrunk. The buffer limit is per distribution channel. A higher limit will give lower latency and higher throughput at the expense of higher memory usage. A variation of this patch has been in commercial production use in at least two companies that the author is aware of. Larger buffer values can reduce the number of {monitor, busy_dist_port, ...} system messages drastically, lower overall messaging latencies, and prevent false timeouts and 'nodedown' messages in extremely busy Mnesia systems. Test suite: there are two tests: a. In erlexec_SUITE.erl to test basic set & get of the value b. In distribution_SUITE.erl, to verify that setting +zdbbl very low will actually change behavior.
2010-10-27Fix ERL_DRV_INT and ERL_DRV_UINT in halfword emulatorRickard Green
2010-10-14Add Win32 support for hard and symbolic file system linksBlaine Whittle
Hard linking requires XP or later and a NTFS formatted drive. Symbolic linking requires Windows Vista, Windows Server 2008, Windows 7 or later. Symbolic linking on earlier versions of Windows will return {error, enotsup}. file:make_link/2, file:make_sym_link/2 and file:read_link/1 are all implemented. file:read_file_info/1 does NOT return the number of hard links on the file as this results in performance problems for read_file_info/1, however this can be enabled by uncommenting a few lines of code. The original path was submitted on 9/2/2009 by Alex Tearse-Doyle.
2010-10-12Fix erl_drv_tsd_get() and enif_tsd_get()Rickard Green
A bug in erl_drv_tsd_get() and enif_tsd_get() could cause an emulator crash. These functions are currently not used in OTP. That is, the crash only occur on systems with user implemented NIF libraries or drivers that use one of these functions.
2010-10-08Merge branch 'rickard/halfword-bug' into devRickard Green
* rickard/halfword-bug: Fix newly introduced halfword emulator bugs
2010-10-07Fix newly introduced halfword emulator bugsRickard Green
2010-10-04Merge branch 'mp/fix-hipe-write' into devBjörn Gustavsson
* mp/fix-hipe-write: fix 64-bit writes to 32-bit struct field in HiPE runtime OTP-8877
2010-10-02Fix crash with erlang:system_info({cpu_topology,junk})Paul Guyot
There is a bug in system_info BIF causing a crash if erts_get_cpu_topology_term fails. The fix comes with a non-regression test.
2010-10-01emulator Makefile: Add missing dependencyBjörn Gustavsson
Make sure that an update to erts/emulator/tools/make_tables will force all generated files to be re-generated.
2010-09-30Fix appending to large files (>4GB) on WindowsJuhani Rankimies
Append mode doesn't work for files larger that 4GB on Windows. Caused by incorrect usage of SetFilePointer in win_efile.c. Fix uses OVERLAPPED structure to specify write position (EOF). http://msdn.microsoft.com/en-us/library/aa365747.aspx Opening file in append mode was also considered, but rejected, because it might cause backwards incompatibility by limiting applicable operations on the descriptor. SetFilePointerEx was not used because it would caused more system calls than using OVERLAPPED structure.
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