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2010-05-27Merge branch 'se/spawn_drv_win_deadlock' into devErlang/OTP
* se/spawn_drv_win_deadlock: Fix deadlock in spawn driver on windows OTP-8641 se/spawn_drv_win_deadlock Windows: Closing port of program that stalled without reading all data could deadlock scheduler thread.
2010-05-24Fix deadlock in spawn driver on windowsSverker Eriksson
A misbehaving port program that does not read all data written to the port may deadlock the scheduler thread when it calls port_close. The chosen solution was to use the new function CancelIoEx if it exist (Vista) otherwise let the spawn driver wait for a short while (10ms) and then to spawn a thread that will wait for the port program to exit.
2010-05-24erl_nif: add make_atom_len, make_existing_atom_len and make_string_lenTuncer Ayaz
Add new NIF API functions - enif_make_atom_len - enif_make_existing_atom_len - enif_make_string_len These are basically the same as enif_make_atom, enif_make_existing_atom and enif_make_string except that the new functions require a length parameter instead of a null-terminated C-string. Signed-off-by: Tuncer Ayaz <[email protected]>
2010-05-24erl_nif: add enif_get_atom_length and enif_get_list_lengthTuncer Ayaz
Add new NIF API functions - enif_get_atom_length - enif_get_list_length Signed-off-by: Tuncer Ayaz <[email protected]>
2010-05-24erl_nif: add enif_is_list and enif_is_tupleTuncer Ayaz
Add new NIF API functions - enif_is_list - enif_is_tuple Signed-off-by: Tuncer Ayaz <[email protected]>
2010-05-20Merge branch 'pan/otp_8217_binary' into devErlang/OTP
* pan/otp_8217_binary: Add documentation for binary module Add more tests and make some go easier on small systems Correct Boyer More and trapping for longest_common_suffix Add longer timetrap to testcases and add binary to app file Add guard BIFs binary_part/2,3 Add binary:{encode,decode}_unsigned({1,2} Add referenced_byte_size/1 Add binary:list_to_bin/1 and binary:copy/1,2 Add bin_to_list/{1,2,3} Add binary:longest_common_prefix/longest_common_suffix Add binary:part to erl_bif_binary.c Move binary module bif's to erl_bif_binary.c Count reductions for process even when not trapping Add random compare testcase Teach BIF's binary:match/matches interrupting/restarting Teach binary.c the semantics to take longest instead of shortest match Initial commit of the binary EEP OTP-8217 Implement EEP31 The module binary from EEP31 (and EEP9) is implemented.
2010-05-17Correct Boyer More and trapping for longest_common_suffixPatrik Nyblom
Add testcases and clean up to get better code coverage.
2010-05-17Add guard BIFs binary_part/2,3Patrik Nyblom
Add the gc_bif's to the VM. Add infrastructure for gc_bif's (guard bifs that can gc) with two and. three arguments in VM (loader and VM). Add compiler support for gc_bif with three arguments. Add compiler (and interpreter) support for new guard BIFs. Add testcases for new guard BIFs in compiler and emulator.
2010-05-12Merge branch 'bg/opt-receive' into devErlang/OTP
* bg/opt-receive: Test that gen_server:call/2,3 are fast even with a huge message queue erts: Add tests for the receive optimization Update primary bootstrap erts: Implement recv_mark/1 and recv_set/1 for real compiler tests: Cover the error handling code in beam_receive compiler test: Test optimization of receive statements Optimize selective receives in the presence of a large message queue Introduce the new recv_mark/1 and recv_mark/1 instructions Compile tests that communicate with R12 nodes with the r12 option Move p_run/2 to test_lib gen: Inline wait_resp_mon/2 to help the compiler optimize OTP-8623 bg/opt-receive reveive statements that can only read out a newly created reference are now specially optimized so that it will execute in constant time regardless of the number of messages in the receive queue for the process. That optimization will benefit calls to gen_server:call(). (See gen:do_call/4 for an example of a receive statement that will be optimized.)
2010-05-11erts: Add tests for the receive optimizationBjörn Gustavsson
2010-05-11Compile tests that communicate with R12 nodes with the r12 optionBjörn Gustavsson
R12 nodes cannot load code that use the optimized receive that we are about to implement.
2010-05-05OTP-8581 Revert prototype of driver_asyncPatrik Nyblom
2010-05-03allow open_port to set env vars containing a trailing '=' characterSteve Vinoski
The erlang:open_port spawn and spawn_executable directives can include an {env, Env} directive to set up environment variables for the spawned process. A bug in ert/emulator/sys/unix/sys.c prevented applications from using {env, Env} to set an environment variable whose value ended with a '=' (equal sign) character; the code mistook the trailing equal sign as an indication that an environment variable was to be cleared from the environment of the spawned process. For example, passing an {env, Env} of {env, [{"foo", "bar="}]} would result in the code in sys.c seeing a string of the form "foo=bar=" The code would see the final '=' character and assume the directive wanted to clear a variable named "foo=bar" from the environment of the spawned process, rather than seeing it as a directive to set the environment variable "foo" to the value "bar=". Fix this problem and add a new regression test for it to the port test suite.
2010-04-30emulator tests: Remove stray OSE/Delta supportBjörn Gustavsson
2010-04-28OTP-8474 NIF improvements after R13B04Sverker Eriksson
New NIF API function enif_make_new_binary
2010-04-13Merge branch 'bg/fconv' into devErlang/OTP
* bg/fconv: erts: Fix loading of modules with invalid floating point arithmetic
2010-04-07erts: Fix loading of modules with invalid floating point arithmeticBjörn Gustavsson
The following program is supposed to cause an exception at run-time: foo() -> Sum1 = Sum2 = N = 2, pSum - (Sum1*(Sum2/N)). but the loader fails to load because it contains the following instruction: fconv {atom,pSum} {fr,2} Fix the loader so that it can handle fconv instructions where the first operand is a non-numeric literal. Reported-by: Torbjörn Törnkvist
2010-03-30Merge branch 'se/decode_packet' into devErlang/OTP
* se/decode_packet: Fix erlang:decode_packet(httph_bin,..) to not return faulty header strings OTP-8548 se/decode_packet erlang:decode_packet(httph_bin,..) could return corrupt header strings or even crash the VM. This has been fixed. It only happened on 32-bit VM if the header name was unknown and between 16 and 20 characters long. Sockets with simular packet option did not suffer from this bug.
2010-03-29Fix erlang:decode_packet(httph_bin,..) to not return faulty header stringsSverker Eriksson
Unrecognized Http header names was sometimes returned as corrupt sub-binaries pointing to a stack allocated buffer. This only happened on 32-bit VM if the header name was between 16 and 20 characters long. It could in some cases lead to segmentation fault. The solution was to avoid creating sub-binary if the returned string was not part of the original binary.
2010-03-25Merge branch 'bg/compiler-remove-r11-support' into devErlang/OTP
* bg/compiler-remove-r11-support: compiler: Don't support the no_binaries option erts: Don't support the put_string/3 instruction compiler: Don't support the no_constant_pool option compiler: Don't support the r11 option test_server: Don't support communication with R11 nodes binary_SUITE: Don't test bit-level binary roundtrips with R11 nodes erts: Test compatibility of funs with R12 instead of R11 OTP-8531 bg/compiler-remove-r11-support
2010-03-22binary_SUITE: Don't test bit-level binary roundtrips with R11 nodesBjörn Gustavsson
2010-03-22erts: Test compatibility of funs with R12 instead of R11Björn Gustavsson
2010-03-22Merge branch 'pan/otp_8332_halfword' into devErlang/OTP
* pan/otp_8332_halfword: Teach testcase in driver_suite the new prototype for driver_async wx: Correct usage of driver callbacks from wx thread Adopt the new (R13B04) Nif functionality to the halfword codebase Support monitoring and demonitoring from driver threads Fix further test-suite problems Correct the VM to work for more test suites Teach {wordsize,internal|external} to system_info/1 Make tracing and distribution work Turn on instruction packing in the loader and virtual machine Add the BeamInstr data type for loaded BEAM code Fix the BEAM dissambler for the half-word emulator Store pointers to heap data in 32-bit words Add a custom mmap wrapper to force heaps into the lower address range Fit all heap data into the 32-bit address range
2010-03-12Teach testcase in driver_suite the new prototype for driver_asyncPatrik Nyblom
The testcase core dunmped. Also made sure the key could actually store long integers in driver_async (which is more of a cosmetic change).
2010-03-10Correct the VM to work for more test suitesPatrik Nyblom
The following test suites now work: send_term_SUITE trace_nif_SUITE binary_SUITE match_spec_SUITE node_container_SUITE beam_literals_SUITE Also add a testcases for system_info({wordsize,internal|external}).
2010-03-10Teach {wordsize,internal|external} to system_info/1Patrik Nyblom
Some test suites need to differentiate between 32-bit terms and 32-bit pointers. While at it, remove some more warnings in process.c for SMP and debug.
2010-03-10OTP-8475 status lock needed when looking up ioq from async threadsRickard Green
Driver threads, such as async threads, using <seealso marker="erl_driver#ErlDrvPDL">port data locks</seealso> peeked at the port status field without proper locking when looking up the driver queue.
2010-03-10OTP-8487 unregister/1 on a port can cause the non-smp runtime to crashRickard Green
A call to the BIF unregister(RegName) when a port had the name RegName registered in the runtime system without SMP support caused a runtime system crash. (Thanks to Per Hedeland for the bugfix and test case.)
2010-02-11OTP-8335 Even more NIF featuresSverker Eriksson
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.
2010-01-18Fix 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.
2010-01-13Improve 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.)
2010-01-08add 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.
2009-12-09OTP-8304 Incompatible changes in the experimental NIF feature. Changed theSverker Eriksson
NIF function prototypes in order to allow more than 3 function arguments. Also an incompatible change in the return value of erlang:load_nif/2. Added support for references, floats and term comparison in NIFs. Read more in the documentation of erl_nif and erlang:load_nif/2.
2009-12-09OTP-8304 Incompatible changes in the experimental NIF feature. Changed theSverker Eriksson
NIF function prototypes in order to allow more than 3 function arguments. Also an incompatible change in the return value of erlang:load_nif/2. Added support for references, floats and term comparison in NIFs. Read more in the documentation of erl_nif and erlang:load_nif/2.
2009-11-20The R13B03 release.OTP_R13B03Erlang/OTP