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path: root/erts/emulator/beam/io.c
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2012-04-27Optimize process state changesRickard Green
2012-04-16Optimize process table accessRickard Green
2012-03-22Ifdef all dynamic trace codePatrik Nyblom
2012-03-22Change to more specific configure options for dtracePatrik Nyblom
2012-03-22Add user tag spreading functionality to VM and use in filePatrik Nyblom
User tags in a dynamic trace enabled VM are spread throughout the system in the same way as seq_trace tokens. This is used by the file module and various other modules to get hold of the tag from the user process without changing the protocol.
2012-03-22Add DTrace support for OS X, Solaris, and Linux (via SystemTap), 3/4Scott Lystig Fritchie
Add probes to the virtual machine, except (mostly) the efile_drv.c driver and other file I/O-related source files.
2012-03-22Merge branch 'raimo/close-ports-on-halt/OTP-9985' into maintRaimo Niskanen
* raimo/close-ports-on-halt/OTP-9985: erts: Basic test of erlang:halt/0..2 erts: Document erlang:halt/2 and update erlang:halt/0,1 erts: Implement erlang:halt/2 stdlib: Stop working around erlang:halt not flushing erts: Make erlang:halt/0,1 close ports and flush async threads erts: Remove forgotten and unused function erl_exit0 erts: Implement erl_halt erts: Remove unused ntbuild.erl
2012-03-21erts: Implement erl_haltRaimo Niskanen
2012-03-19Merge branch 'ph/fix-enfile/OTP-9990' into maintBjörn-Egil Dahlberg
* ph/fix-enfile/OTP-9990: Update preloaded prim_inet.beam gen_tcp: Use correct specs for accept and listen prim_inet: Catch system_limit in open_port Fix returned error from gen_tcp:accept/1,2 when running out of ports
2012-01-09erts: Badarg if port output overflows iov_lenRaimo Niskanen
2012-01-04Fix returned error from gen_tcp:accept/1,2 when running out of portsPer Hedeland
The {error, enfile} return value is badly misleading and confusing for this case, since the Posix ENFILE errno value has a well-defined meaning that has nothing to do with Erlang ports. The fix changes the return value to {error, system_limit}, which is consistent with e.g. various file(3) functions. inet:format_error/1 has also been updated to support system_limit in the same manner as file:format_error/1.
2011-12-20erts: Bugfix - driver_deq freed wrong length due to short type (int)Raimo Niskanen
2011-12-09Remove support for old drivers without ERL_DRV_EXTENDED_MARKERBjörn Gustavsson
Because of the extensive changes in the driver API (and especially the change of return types for callbacks such as 'control'), we can no longer allow drivers without version numbers.
2011-12-09Bump driver version to 2.0Raimo Niskanen
2011-12-09erl_driver.h: Enlarge types on driver callbacks output, control and callRaimo Niskanen
2011-12-07erl_driver.h: Enlarge types in driver output functionsRaimo Niskanen
2011-12-07erl_driver.h: Enlarge types in driver queue and alloc functionsRaimo Niskanen
2011-12-07erl_driver.h: Use ErlDrvSizeT for size field in ErlIOVecRaimo Niskanen
2011-12-05erts: Remove duplicate erts_unblock_fpeJovi Zhang
The second function erts_unblock_fpe is not needed in here.
2011-12-02Iron out bugs in Win64 found in daily buildsPatrik Nyblom
Almost all uses of the 'long' datatype is removed from VM and tests Emulator test now runs w/o drivers crashing Nasty abs bug fixed in VM as well as type errors in allocator debug functions Still one allocator test that fails, domain knowledge is needed to fix that. Fix type inconsistency in beam_load causing crashes
2011-11-16Remove remaining gcc 4.6 assigned-but-not-used warnings from ertsPatrik Nyblom
2011-11-13Use generic lock-free queue for async threadsRickard Green
Queues used for communication between async threads and scheduler threads have been replaced with lock-free queues. Drivers using the driver_async functionality are not automatically locked to the system anymore, and can be unloaded as any dynamically linked in driver. Scheduling of ready async jobs is now also interleaved in between other jobs. Previously all ready async jobs was performed at once.
2011-06-14Use new atomic API in runtime systemRickard Green
All uses of the old deprecated atomic API in the runtime system have been replaced with the use of the new atomic API. In a lot of places this change imply a relaxation of memory barriers used.
2011-05-13Merge branch 'rickard/barriers/OTP-9281' into devRickard Green
* rickard/barriers/OTP-9281: Silence warnings Fix build with hipe on amd64 Reduce number of atomic ops Use 32-bit atomic for port snapshot Remove pointless erts_ports_alive variable Ensure quick break Ensure that all rehashing information are seen when done Ensure that stack updates are seen when stack is released Add needed barriers for write_concurrency tables Homogenize memory barriers on atomics
2011-05-13Use 32-bit atomic for port snapshotRickard Green
2011-05-13Remove pointless erts_ports_alive variableRickard Green
2011-05-10Replace io_list_len() with erts_iolist_size()Björn Gustavsson
The io_list_len() function returns an int, where a negative return value indicates a type error. One problem is that an int only consists of 32 bits in a 64-bit emulator. Changing the return type to Sint will solve that problem, but in the 32-bit emulator, a large iolist and a iolist with a type error will both return a negative number. (Noticed by Jon Meredith.) Another problem is that for iolists whose total size exceed the word size, the result would be truncated, leading to a subsequent buffer overflow and emulator crash. Therefore, introduce the new erts_iolist_size() function which returns a status indication and writes the result size through a passed pointer. If the result size does not fit in a word, return an overflow indication.
2011-05-06Make port_command/2 reject non-byte sized bitstringsBjörn Gustavsson
Also rename the fun_to_port/1 test case to outputv_errors/1 and test sending more kinds of bad data to an outputv-enabled driver.
2011-05-06io.c: Make io_list_vec_len() less generalBjörn Gustavsson
io_list_vec_len() is slightly more general than it needs to be. Specifically: * The only caller always passes ERL_SMALL_IO_BIN_LIMIT as the value for the bin_limit parameter, so the bin_limit parameter can be eliminated. * The only caller never passes any NULL pointers, so there is no need test the pointers before writing through them.
2011-04-27Merge branch 'sverker/erts_printf-halfword' into devSverker Eriksson
* sverker/erts_printf-halfword: erts_printf %be to print integers of size Eterm Fix use of type BeamInstr in hipe_debug.c Conflicts: erts/emulator/hipe/hipe_debug.c
2011-03-16erts_printf %be to print integers of size EtermSverker Eriksson
Existing %bp to print pointer size integers does not work in halfword emulator to print Eterm size integers.
2011-03-16erts: Remove unused variablesTuncer Ayaz
2010-12-20Refactor timer interfaceBjörn-Egil Dahlberg
2010-12-15Use new atomic types in emulatorRickard Green
2010-10-27Fix ERL_DRV_INT and ERL_DRV_UINT in halfword emulatorRickard Green
2010-08-12Increase vheap counter to Uint64Björn-Egil Dahlberg
This will reduce the risk of integer wrapping in bin vheap counting. The vheap size series will now use the golden ratio instead of doubling and fibonacci sequences. OTP #8730
2010-07-20One off-heap list, to eliminate two words per ETS object.Sverker Eriksson
Merging the three off-heap lists (binaries, funs and externals) into one list. This reduces memory consumption by two words (pointers) per ETS object.
2010-06-01OTP-8612 Fix potential premature destruction of port locksRickard Green
Port locks could be prematurely destroyed.
2010-03-10Support monitoring and demonitoring from driver threadsPatrik Nyblom
The driver in the wx application does monitoring (and demonitoring) from non-scheduler threads. In the non-half-word emulators, data will be modified without the protection of a lock (which is potentially bad), but the half-word emulator will crash in that situation. While at it, also correct an old bug which make assertions fail in the Kernel test suite.
2010-03-10Turn on instruction packing in the loader and virtual machinePatrik Nyblom
2010-03-10Store pointers to heap data in 32-bit wordsPatrik Nyblom
Store Erlang terms in 32-bit entities on the heap, expanding the pointers to 64-bit when needed. This works because all terms are stored on addresses in the 32-bit address range (the 32 most significant bits of pointers to term data are always 0). Introduce a new datatype called UWord (along with its companion SWord), which is an integer having the exact same size as the machine word (a void *), but might be larger than Eterm/Uint. Store code as machine words, as the instructions are pointers to executable code which might reside outside the 32-bit address range. Continuation pointers are stored on the 32-bit stack and hence must point to addresses in the low range, which means that loaded beam code much be placed in the low 32-bit address range (but, as said earlier, the instructions themselves are full words). No Erlang term data can be stored on C stacks (enforced by an earlier commit). This version gives a prompt, but test cases still fail (and dump core). The loader (and emulator loop) has instruction packing disabled. The main issues has been in rewriting loader and actual virtual machine. Subsystems (like distribution) does not work yet.
2010-03-10Fit all heap data into the 32-bit address rangePatrik Nyblom
This is the first step in the implementation of the half-word emulator, a 64-bit emulator where all pointers to heap data will be stored in 32-bit words. Code specific for this emulator variant is conditionally compiled when the HALFWORD_HEAP define has a non-zero value. First force all pointers to heap data to fall into a single 32-bit range, but still store them in 64-bit words. Temporary term data stored on C stack is moved into scheduler specific storage (allocated as heaps) and macros are added to make this happen only in emulators where this is needed. For a vanilla VM the temporary terms are still stored on the C stack.
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.
2010-02-11OTP-8335 Even more NIF featuresSverker Eriksson
2010-02-10Merge branch 'egil/lcnt' into ccase/r13b04_devErlang/OTP
* egil/lcnt: Add test suite for lcnt in tools Add lcnt:rt_opt/1 bindings to erts_debug Add runtime option to enable/disable lcnt stats Add auto width on string output Add lcnt documentation Add lock profiling tool OTP-8424 Add lock profiling tool. The Lock profiling tool, lcnt, can make use of the internal lock statistics when the runtime system is built with this feature enabled. This provides a mechanism to examine potential lock bottlenecks within the runtime itself. - Add erts_debug:lock_counters({copy_save, bool()}). This option enables or disables statistics saving for destroyed processes and ets-tables. Enabling this might consume a lot of memory. - Add id-numbering for lock classes which is otherwise undefined.
2010-02-08Add runtime option to enable/disable lcnt statsBjörn-Egil Dahlberg
Add erts_debug:lock_counters({copy_save, bool()}). This option enables or disables statistics saving for destroyed processes and ets-tables. Enabling this might consume a lot of memory. Add id-numbering for lock classes which is otherwise undefined.
2009-11-20The R13B03 release.OTP_R13B03Erlang/OTP