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2010-02-02Add the +t emulator option to change the maximum number of atomsJulien Barbot
It is now possible to increase or decrease the maximum number of atoms the VM can handle. The default value is 1048576 (1024*1024).
2010-01-31hipe_mfait_lock needs to be below proc_main.Rickard Green
2010-01-30Merge branch 'mp/hipe-smp-fixes' into ccase/r13b04_devErlang/OTP
* mp/hipe-smp-fixes: work around hipe_mfa_info_table lock omission fix hipe loader SMP non-atomicity error OTP-8397 The loading of native code was not properly atomic in the SMP emulator, which could cause crashes. Also a per-MFA information table for the native code has now been protected with a lock since it turns that it could be accessed concurrently in the SMP emulator. (Thanks to Mikael Pettersson.)
2010-01-27work around hipe_mfa_info_table lock omissionMikael Pettersson
HiPE maintains per-MFA information such as native code entry point in a table. This table was thought to be read-only at runtime, except when the loader populates it, so it employed no locking. That turned out to be incorrect: if there is an apply of a previously unseen MFA, a native code stub for that MFA is created and recorded in the table, causing it to grow. Work around this for now by slapping a mutex around accesses to that table. Signed-off-by: Mikael Pettersson <[email protected]>
2010-01-27Update preloaded filesBjörn Gustavsson
2010-01-27Merge branch 'rb/stdlib_re_unicode_fixes' into ccase/r13b04_devErlang/OTP
* rb/stdlib_re_unicode_fixes: Fix lost unicode option in re:compile() Refactor out repeated block in re module Fix re:replace/4 to handle unicode charlist Replacement argument Fix re:replace/4 to handle unicode charlist RE argument Fix re:replace/4 to handle binary unicode output when nothing replaced OTP-8394 A number of bugs concerning re and unicode are corrected: - re:compile no longer loses unicode option, which also fixes bug in re:split. - re:replace now handles unicode charlist replacement argument - re:replace now handles unicode RE charlist argument correctly - re:replace now handles binary unicode output correctly when nothing is replaced. Most code, testcases and error isolation done by Rory Byrne.
2010-01-27Fix re:replace/4 to handle unicode charlist RE argumentPatrik Nyblom
The real problem is in the re:run/3 BIF. Noticed-by: Rory Byrne Tests-by: Rory Byrne
2010-01-27OTP-8387 Explicit top directories in archive files are now optional.Håkan Mattsson
For example, if an archive (app-vsn.ez) just contains an app-vsn/ebin/mod.beam file, the file info for the app-vsn and app-vsn/ebin directories are faked using the file info from the archive file as origin. The virtual direcories can also be listed. For short, the top directories are virtual if they does not exist.
2010-01-26OTP-8343 The documentation is now possible to build in an open sourceLars G Thorsen
environment after a number of bugs are fixed and some features are added in the documentation build process. - The arity calculation is updated. - The module prefix used in the function names for bif's are removed in the generated links so the links will look like http://www.erlang.org/doc/man/erlang.html#append_element-2 instead of http://www.erlang.org/doc/man/erlang.html#erlang:append_element-2 - Enhanced the menu positioning in the html documentation when a new page is loaded. - A number of corrections in the generation of man pages (thanks to Sergei Golovan) - Moved some man pages to more apropriate sections, pages in section 4 moved to 5 and pages in 6 moved to 7. - The legal notice is taken from the xml book file so OTP's build process can be used for non OTP applications.
2010-01-25Test that "extra" is handled according to specs in ALIVE2_REQ and PORT2_RESPKlas Johansson
2010-01-25Merge branch 'ta/os_timestamp_no_mutex' into ccase/r13b04_devErlang/OTP
* ta/os_timestamp_no_mutex: Remove mutex lock around sys_gettimeofday() in os:timestamp/0 OTP-8390 An unecessary lock operation in os:timestamp/0 has been eliminated, making it slightly more efficient. (Thanks to Jonas Falkevik and Tuncer Ayaz.)
2010-01-25OTP-8377 ETS bug causing the memory counter from ets:info forSverker Eriksson
ordered_set's to sometimes get out of synch and absurdly high.
2010-01-23Remove mutex lock around sys_gettimeofday() in os:timestamp/0Tuncer Ayaz
In the erlang-questions thread "os:timestamp() uses mutex lock" Jonas Falkevik questioned the need for a mutex lock in os:timestamp/0. The mutex lock *is* needed in erlang:now() to guarantee the uniqueness of the returned time, but serves no useful purpose in os:timestamp(). Signed-off-by: Tuncer Ayaz <[email protected]>
2010-01-22OTP-8386 Immediately repeated multi-scheduling block/unblock cycles usingRickard Green
erlang:system_flag(multi_scheduling, block | unblock) could deadlock the runtime system.
2010-01-22Merge branch 'bg/avoid-etop-in-include' into ccase/r13b04_devErlang/OTP
* bg/avoid-etop-in-include: epmd tests: fix build of test suites on Windows system test: fix build of test suites on Windows
2010-01-20epmd tests: fix build of test suites on WindowsBjörn Gustavsson
On Windows, the ERL_TOP environment variable contains a path that only is valid for cygwin-enabled programs, such as 'make'. It is not meaningful to pass the value of $ERL_TOP in the -I option to the Erlang compiler, because the Erlang emulator does not interpret cygwin paths correctly. Therefore, -include("test_server.hrl") will fail to find test_server.hrl. Work around the problem by creating an Emakefile and let ts:run() take care of the build (ts:run() will set up the include path so that test_server.hrl can be found).
2010-01-20OTP-8375 A bug causing memory corruption in re:run() has been corrected.Patrik Nyblom
(Thanks to Yamashina Hio.)
2010-01-20system test: fix build of test suites on WindowsBjörn Gustavsson
On Windows, the ERL_TOP environment variable contains a path that only is valid for cygwin-enabled programs, such as 'make'. It is not meaningful to pass the value of $ERL_TOP in the -I option to the Erlang compiler, because the Erlang emulator does not interpret cygwin paths correctly. Therefore, -include("test_server.hrl") will fail to find test_server.hrl. Work around the problem by using -include_lib().
2010-01-20Merge branch 'cf/compile_warning_as_error' into ccase/r13b04_devErlang/OTP
* cf/compile_warning_as_error: Add option -Werror in erlc(1) compile: add flag warnings_as_errors to treat warnings as errors compile.erl: remove trailing whitespace OTP-8382 The -Werror option for erlc and the compiler option warnings_as_errors will cause warnings to be treated as errors. (Thanks to Christopher Faulet.)
2010-01-19Add option -Werror in erlc(1)Christopher Faulet
Like in gcc, this option treats warnings as errors.
2010-01-19OTP-8373 ERTS makefiles used to detect the use of a gcc C compiler byRickard Green
checking if CC equaled gcc. That is, the makefiles failed to detect gcc C compilers with other command line names than gcc. `configure' now substitute GCC into the makefiles. If CC is a gcc C compiler, GCC will have the value yes. (Thanks to Jean-S�bastien P�dron)
2010-01-19OTP-8342 Processes, and/or ports could get stuck on a blocked schedulerRickard Green
when erlang:system_flag(multi_scheduling, block) was used. Processes, and/or ports could get stuck on an offline scheduler when schedulers online were reduced using erlang:system_flag(schedulers_online, SchedulersOnline).
2010-01-19Merge branch 'bg/compiler-beam_validator' into ccase/r13b04_devErlang/OTP
* bg/compiler-beam_validator: beam_validator: fix incorrect assumptions about GC guard BIFs OTP-8378 In rare circumstances when using garbaging collecting guard BIFs, the validation pass (beam_validator) would signal that the code was unsafe, when it in fact was correct. (Thanks to Kiran Khaladkar.)
2010-01-18Fix annoying failing statistics_SUITE test casesBjörn Gustavsson
In an SMP emulator, two of the test cases in statistics_SUITE frequently fail. Remove the runtime_zero_update/1 test case, because you can't really expect an SMP emulator not to spend any CPU time at all even if no Erlang process is active. Adjust the runtime_update/1 test case to not fail if the measured times are note close enough. It will still fail if statistics(runtime) would fail or return the wrong type.
2010-01-15Merge branch 'egil/binary-gc' into ccase/r13b04_devErlang/OTP
* egil/binary-gc: Add documentation for binary heap size settings. Add tracing capabilities for binary virtual heap Add min heap size start options to beam and erl Improve binary garbage collection OTP-8370 The default settings for garbage collection of binaries has been adjusted to be less aggressive than in R13B03. It is now also possible configure the settings for binary GC. See the documentation for spawn_opt/2-5, erlang:system_info/1, erlang:system_flag/2, process_flag/2-3, erlang:trace/3, and the documenation for erl for the new command line options +hms and +hmbs.
2010-01-15beam_validator: fix incorrect assumptions about GC guard BIFsBjörn Gustavsson
The beam_validator pass incorrectly assumes that a GC guard BIF (such as length/1) may first do a garbage collection and then fail. That assumption is not correct (guards BIF only do garbage collection when it is known that the BIF call will succeed), and will cause the compiler to reject valid programs. Modify the beam_validator to assume that if the branch is taken for a gc_bif instruction, all registers are unchanged and no garbage collection has occurred. Also add a comment in the emulator about that assumption.
2010-01-13Add documentation for binary heap size settings.Björn-Egil Dahlberg
Documentation of min_heap_size and min_bin_vheap size for: * spawn_opt/2, spawn_opt/3, spawn_opt/4, spawn_opt/5 * erlang:system_flag/2 * erlang:system_info/1 * process_flag/2 * process_info/2 * erlang:trace/3 Documentation for the new beam start arguments: +hms Size, Default minimum heap size for processes. +hmbs Size, Default minimum binary virtual heap size.
2010-01-13Add tracing capabilities for binary virtual heapBjörn-Egil Dahlberg
2010-01-13Add min heap size start options to beam and erlBjörn-Egil Dahlberg
The erl (and beam) start arguments are extended with the following options: * +hms Size, sets the default minimum heap size for processes. * +hmbs Size, sets the default minimum binary virtual heap size for processes. The previous +h Size argument can still be used for backward compatibility purposes.
2010-01-13Improve binary garbage collectionBjörn-Egil Dahlberg
The garbage collector in r13b03 is too aggressive in some cases. This commit raises the level of default initial allowed binary garbage (virtual heap for binaries) before collecting from 233 words to 46368 words (181 kB on 32-bit). A new option, min_bin_vheap_size, has been added to spawn_opt, system_flag and process_flag can be used to change the default values. The option can also be used with system_info and process_info to inspect the values. For symmetry the option min_heap_size has been added to the above functions where it was previously missing. Add testcases for min_bin_vheap_size and min_heap_size for functions process_flag/2, process_info/2, system_info/2 and spawn_opt/2.
2010-01-13OTP-8240 Improved GC performance after BIF/NIF call when a lot of heapSverker Eriksson
fragments was created. This will mainly benefit NIFs that return large compound terms.
2010-01-12Merge branch 'jv/binary_to_term-opts' into ccase/r13b04_devErlang/OTP
* jv/binary_to_term-opts: document ErtsExternalDist flags and CON_ID mask add options to binary_to_term OTP-8367 There is new erlang:binary_to_binary/2 BIF that takes an option list. The option safe can be used to prevent creation of resources that are not garbage collected (such as atoms). (Thanks to Jayson Vantuyl.)
2010-01-12Merge branch 'tc/premodern-fpe' into ccase/r13b04_devErlang/OTP
* tc/premodern-fpe: Add -D_XOPEN_SOURCE to CPPFLAGS on Darwin platforms Test for reliable fpes on Darwin platforms without DARWIN_MODERN_MCONTEXT OTP-8368 The configure test for reliable floating point exceptions has been update to work on modern versions of Mac OS X. (Thanks to Trannie Carter.)
2010-01-11Merge branch 'kj/epmd-port2resp-trunc-extra' into ccase/r13b04_devErlang/OTP
* kj/epmd-port2resp-trunc-extra: Handle "extra" field according to specs in ALIVE2_REQ and PORT2_RESP. OTP-8361 EPMD now correctly handles the extra data field which can be given in the ALIVE2_REQ request and retrieved in the PORT2_RESP response. (Thanks to Klas Johansson.)
2010-01-08document ErtsExternalDist flags and CON_ID maskJayson Vantuyl
In the ErtsExternalDist structure, the flags field holds a combination of flags (tagged into the high bits) and the connection ID (in the low bits). This wasn't clearing indicated anywhere. This patch adds a comment before the flags and mask that indicates their use and relation to each other. This will help guide people through the code and reduce the likelihood that someone will add a flag without adjusting the mask.
2010-01-08add options to binary_to_termJayson Vantuyl
term_to_binary and binary_to_term are powerful tools that can be used easily in lieu of a custom binary network protocol. Unfortunately, carefully crafted data can be used to exhaust the memory in an Erlang node by merely attempting to decode binaries. This makes it unsafe to receive data from untrusted sources. This is possible because binary_to_term/1 will allocate new atoms and new external function references. These data structures are not garbage collected. This patch implements the new form of binary_to_term that takes a list of options, and a simple option called 'safe'. If specified, this option will cause decoding to fail with a badarg error if an atom or external function reference would be allocated. In the general case, it will happily decode any Erlang term other than those containing new atoms or new external function references. However, fun, pid, and ref data types can embed atoms. They might fail to decode if one of these embedded atoms is new to the node. This may be an issue if encoded binaries are transferred between nodes or persisted between invocations of Erlang.
2010-01-06Update preloaded filesBjörn Gustavsson
2010-01-06Mark concat_binary/1 as deprecatedBjörn Gustavsson
2009-12-22Handle "extra" field according to specs in ALIVE2_REQ and PORT2_RESP.Klas Johansson
Don't let the length field pollute the value of the "extra" field in ALIVE2_REQ. Extra was read, starting at the second byte of the two byte length field, which meant that it was included in the result and the last byte of the value was skipped: if "extra" is <<1, 2>>, return <<0, 2, 1, 2>> not <<0, 2, 2, 1>> Increment the offset correctly when sending PORT2_RESP, in order to make sure the "extra" field won't be truncated: if "extra" is <<>>, return <<0, 0>> not <<0>> if "extra" is <<1, 2>>, return <<0, 2, 1, 2>> not <<0, 2, 1>> Allow null characters in "extra".
2009-12-21Order version fields in documentation for ALIVE2_REQ correctlyKlas Johansson
Place HighestVersion before LowestVersion, since that is what the source code does (erl_epmd.erl and epmd_srv.c).
2009-12-18Add -D_XOPEN_SOURCE to CPPFLAGS on Darwin platformsTrannie Carter
ucontext routines are deprecated in Snow Leopard and defining _XOPEN_SOURCE is the suggested remedy.
2009-12-18Test for reliable fpes on Darwin platforms without DARWIN_MODERN_MCONTEXTTrannie Carter
The mcontext_t structure changed between Tiger & Leopard and the erts configure script doesn't take this into account when testing for reliable floating point exceptions. HiPE is not enabled when reliable fpes are not detected. The PPC test preserves the pre-modern mcontext_t and so builds on Tiger, but I suspect that PPC/Leopard is broken. I don't have the header files to check modern PPC mcontext_t so I haven't changed that part of the test.
2009-12-17Merge branch 'at/windows_build_fixes' into ccase/r13b04_devErlang/OTP
* at/windows_build_fixes: Updated README.win32 for compiling with VS2008 and issues with mc.exe Allow mc.sh and rc.sh to work when path to mc/rc.exe has spaces OTP-8345 Building on Windows will now work if the paths to mc.exe and rc.exe contain spaces. The README.win32 file has been updated with some information about building using Visual Studio 2008. (Thanks to Andrew Thompson.)
2009-12-17Send up AssocID as unsignedBjörn Gustavsson
It must be unsigned so that prim_inet will not reject when it is sent down again. (Suggested fix by Raimo for a bug reported by Simon Cornish.)
2009-12-15Allow mc.sh and rc.sh to work when path to mc/rc.exe has spacesAndrew Thompson
The eval call in these scripts was failing for me because the path to them on my windows machine contained spaces. I also fixed some copy/paste-os from when (evidently) the mc.sh script was created by copying the rc.sh script and modifying it.
2009-12-15Merge branch 'sc/darwin_build_rm_dSYMN' into ccase/r13b04_devErlang/OTP
* sc/darwin_build_rm_dSYMN: Fix 'make clean' in erts with debug builds under Darwin
2009-12-14Fix 'make clean' in erts with debug builds under DarwinSimon Cornish
The Apple compiler creates DWARF debugging symbols in a bundle (ie. a directory) named <name>.dSYM In order for make clean to work correctly, the rm command needs -r
2009-12-14Merge branch 'bg/on_load' into ccase/r13b04_devErlang/OTP
* bg/on_load: Test on_load functions that don't return 'ok' Change the expected return value for on_load functions OTP-8339 The expected return value for an on_load function has been changed. (See the section about code loading in the Reference manual.)
2009-12-13OTP-8341 Minor alignment adjustments of scheduler specific data.Rickard Green
2009-12-13Change the expected return value for on_load functionsBjörn Gustavsson
An on_load function is supposed to return 'true' to indicate that the module should be loaded, and 'false' if it should be unloaded. But returning any other term, as well as causing an exception, will also unload the module. Since we don't like boolean values mixed with other values, change the expected return value as follows: * If 'ok' is returned, the module will remain loaded and become callable. * If any other value is returned (or an exception is generated), the module will be unloaded. Also, if the returned value is not an atom, send a warning message to the error_logger (using error_logger:warning_msg/2). The new interpretation of the return value means that an on_load function can now directly return the return value from erlang:load_nif/2.