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2013-01-25Update copyright yearsBjörn-Egil Dahlberg
2013-01-21Text representation of a float formatted using given options.Serge Aleynikov
This BIF solves a problem of float_to_list/1 that doesn't allow specifying the number of digits after the decimal point when formatting floats. float_to_list(Float, Options) -> string() Float = float() Options = [Option] Option = {decimals, Decimals::0..249} | {scientific, Decimals::0..249} | compact Returns a string which corresponds to the text representation of a `Float` formatted using given options. When decimals option is specified the returned value will contain at most `Decimals` number of digits past the decimal point. When `compact` option is provided the trailing zeros at the end of the list are truncated (this option is only meaningful together with the `decimals` option). When `scientific` option is provided, the float will be formatted using scientific notation with `Decimals` digits of precision. If `Options` is `[]` the function behaves like `float_to_list/1`. When using `decimals` option and the number doesn't fit in the static internal buffer of 256 bytes the function throws `badarg`.
2012-12-07Merge branch 'rickard/port-optimizations/OTP-10336' into ↵Rickard Green
rickard/r16/port-optimizations/OTP-10336 * rickard/port-optimizations/OTP-10336: Change annotate level for emacs-22 in cerl Update etp-commands Add documentation on communication in Erlang Add support for busy port message queue Add driver callback epilogue Implement true asynchronous signaling between processes and ports Add erl_drv_[send|output]_term Move busy port flag Use rwlock for driver list Optimize management of port tasks Improve configuration of process and port tables Remove R9 compatibility features Use ptab functionality also for ports Prepare for use of ptab functionality also for ports Atomic port state Generalize process table implementation Implement functionality for delaying thread progress from unmanaged threads Conflicts: erts/doc/src/erl_driver.xml erts/doc/src/erlang.xml erts/emulator/beam/beam_bif_load.c erts/emulator/beam/beam_bp.c erts/emulator/beam/beam_emu.c erts/emulator/beam/bif.c erts/emulator/beam/copy.c erts/emulator/beam/erl_alloc.c erts/emulator/beam/erl_alloc.types erts/emulator/beam/erl_bif_info.c erts/emulator/beam/erl_bif_port.c erts/emulator/beam/erl_bif_trace.c erts/emulator/beam/erl_init.c erts/emulator/beam/erl_message.c erts/emulator/beam/erl_port_task.c erts/emulator/beam/erl_process.c erts/emulator/beam/erl_process.h erts/emulator/beam/erl_process_lock.c erts/emulator/beam/erl_trace.c erts/emulator/beam/export.h erts/emulator/beam/global.h erts/emulator/beam/io.c erts/emulator/sys/unix/sys.c erts/emulator/sys/vxworks/sys.c erts/emulator/test/port_SUITE.erl erts/etc/unix/cerl.src erts/preloaded/ebin/erlang.beam erts/preloaded/ebin/prim_inet.beam erts/preloaded/src/prim_inet.erl lib/hipe/cerl/erl_bif_types.erl lib/kernel/doc/src/inet.xml lib/kernel/src/inet.erl
2012-12-06Merge branch 'maint'Ingela Anderton Andin
Conflicts: erts/emulator/sys/vxworks/sys.c erts/vsn.mk lib/ssl/src/ssl_connection.erl lib/ssl/test/ssl_basic_SUITE.erl
2012-12-03Use ptab functionality also for portsRickard Green
2012-12-03Prepare for use of ptab functionality also for portsRickard Green
2012-11-30erts: Change default of erl_crash.dumpBjörn-Egil Dahlberg
* Create an erl_crash.dump if no heart exists and no ERL_CRASH_DUMP_SECONDS is set (behaviour changed) * Don't create an erl_crash.dump if heart do exists and no ERL_CRASH_DUMP_SECONDS is set (behaviour not changed) This changes the behaviour back to the R15B02 default considering if a beam was running with no heart. The motivation is that we want a fast heart to fast restart erlang if it crashes but to be able to get non-truncated erl_crash.dumps via setting ERL_CRASH_DUMP_SECONDS if we so desire.
2012-11-28Merge branch 'sverk/crypto-unloading'Sverker Eriksson
* sverk/crypto-unloading: crypto: Link crypto_callback statically crypto: Add debug print macros crypto: Enable runtime upgrade of crypto crypto: Make unloading of crypto safer OTP-10596
2012-10-24Merge branch 'maint'Björn-Egil Dahlberg
Conflicts: erts/etc/common/heart.c
2012-10-23erts: Fix crash dump write to port hackBjörn-Egil Dahlberg
More future proof with R16
2012-10-16erts: Change ERL_CRASH_DUMP_SECONDS behaviourBjörn-Egil Dahlberg
Not setting ERL_CRASH_DUMP_SECONDS will now terminate beam immediately on a crash without writing a crash dump file. Setting ERL_CRASH_DUMP_SECONDS to 0 will also terminate beam immediately on a crash without writing a crash dump file, i.e. same as not setting ERL_CRASH_DUMP_SECONDS environment variable. Setting ERL_CRASH_DUMP_SECONDS to a negative value will let the beam wait indefinitely on the crash dump file being written. Setting ERL_CRASH_DUMP_SECONDS to a positive value will let the beam wait that many seconds on the crash dump file being written. A positive value will set both an alarm in beam AND a heart timeout for restart if heart is running. This is due to the change of 'heart' behavior when 'heart' is listening for a crash.
2012-10-15erts, heart: Ensure erl_crash.dump is writtenBjörn-Egil Dahlberg
When a crash dump is about to be written and we have heartbeat enabled on a system. We need time to write it before heart explicitly kills the beam.
2012-10-09crypto: Make unloading of crypto saferSverker Eriksson
Facts: crypto nif-lib registers callback functions that openssl uses for memory management and thread synchronization. The callback functions can only be set once, openssl does not allow changing the callback functions. Problem: If openssl is dynamicly linked to crypto, you might get s scenario where the crypto lib is unloaded while leaving openssl loaded with its old pointers to the unloaded crypto code intact. If crypto is then reloaded (by init:restart() for example), the crypto nif-lib might get relocated at a different address. crypto calls openssl which in turn calls the old invalid callback functions...kaboom. Solution: Break apart the callback functions into a separate dynamic lib that crypto loads with dlopen. When crypto is unloaded the callback lib is left in place to be reused if/when crypto is loaded again.
2012-09-07Replace sprintf with erts_snprintf in beamBjörn-Egil Dahlberg
2012-08-31Update copyright yearsBjörn-Egil Dahlberg
2012-08-14Make get/putenv and erlexec understand UnicodePatrik Nyblom
Putenv and getenv needs to convert to the proper environment strings in Unicode depending on platform and user settings for filename encoding. Also erlexec needs to pass environment strings in an appropriate way for kernel to pick up. All environment strings on the command line, as well as home directory, is now passed in UTF8 on windows and in whatever encoding you have on Unix, kernel tries to convert all parameters and environments from UTF8 before making strings.
2012-04-17Extend erlang:port_info/1,2 to show the OS pid of a spawned processMatthias Lang
When spawning OS (unix) processes with erlang:open_port, store the resulting unix pid so that it can be queried later on using erlang:port_info/1,2.
2011-12-09erl_driver.h: Enlarge types on driver callbacks output, control and callRaimo 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
2011-12-02Fix time typesRickard Green
2011-11-13Merge branch 'rickard/generic-thr-queue/OTP-9632'Rickard Green
* rickard/generic-thr-queue/OTP-9632: Use generic lock-free queue for async threads Use generic lock-free queue for misc aux work Implement generic lock-free queue
2011-11-13Merge branch 'rickard/thr-progress-block/OTP-9631'Rickard Green
* rickard/thr-progress-block/OTP-9631: Replace system block with thread progress block
2011-11-13Merge branch 'rickard/alloc-opt/OTP-7775'Rickard Green
* rickard/alloc-opt/OTP-7775: Optimize memory allocation Conflicts: erts/aclocal.m4 erts/emulator/hipe/hipe_bif_list.m4 erts/preloaded/ebin/erl_prim_loader.beam erts/preloaded/ebin/erlang.beam erts/preloaded/ebin/init.beam erts/preloaded/ebin/otp_ring0.beam erts/preloaded/ebin/prim_file.beam erts/preloaded/ebin/prim_inet.beam erts/preloaded/ebin/prim_zip.beam erts/preloaded/ebin/zlib.beam
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.
2011-11-13Replace system block with thread progress blockRickard Green
The ERTS internal system block functionality has been replaced by new functionality for blocking the system. The old system block functionality had contention issues and complexity issues. The new functionality piggy-backs on thread progress tracking functionality needed by newly introduced lock-free synchronization in the runtime system. When the functionality for blocking the system isn't used there is more or less no overhead at all. This since the functionality for tracking thread progress is there and needed anyway.
2011-11-13Optimize memory allocationRickard Green
A number of memory allocation optimizations have been implemented. Most optimizations reduce contention caused by synchronization between threads during allocation and deallocation of memory. Most notably: * Synchronization of memory management in scheduler specific allocator instances has been rewritten to use lock-free synchronization. * Synchronization of memory management in scheduler specific pre-allocators has been rewritten to use lock-free synchronization. * The 'mseg_alloc' memory segment allocator now use scheduler specific instances instead of one instance. Apart from reducing contention this also ensures that memory allocators always create memory segments on the local NUMA node on a NUMA system.
2011-11-08Merge branch 'bjorn/create-less-garbage'Björn Gustavsson
* bjorn/create-less-garbage: Optimize filename:basename/1 to produce less garbage Optimize filename:extension/1 to produce less garbage sys.c for Unix: Undo caching of utsname in os_flavor() Pre-build the tuples returned by os:type/0 and os:version/0
2011-11-07erts: "initialized" is only used with CHLDWTHRBjörn-Egil Dahlberg
2011-10-14Merge branch 'rickard/atomics-api/OTP-9014' and OTP_R14B04Rickard Green
Conflicts: erts/aclocal.m4 erts/emulator/beam/erl_db.c erts/emulator/sys/win32/sys.c erts/include/internal/ethread_header_config.h.in
2011-10-09sys.c for Unix: Undo caching of utsname in os_flavor()Björn Gustavsson
Since his function will be called only once, caching is a waste of memory.
2011-09-19Merge branch 'dev' into majorBjörn-Egil Dahlberg
* dev: gs: Update to modern type guards in examples os_mon: Check results from fgets in cpu_sup erts: Remove compiler warning in sys.c
2011-09-16erts: Remove compiler warning in sys.cBjörn-Egil Dahlberg
2011-09-16Merge branch 'dev' into majorBjörn-Egil Dahlberg
* dev: Move init of smp rw mutex from init to sys_args to make sure that it is initialized before the first erts_sys_getenv call Move erts_sys_env_init() to erts_sys_pre_init() Remove _DEBUG from start_erl.c Spelling correction in erlsrv doc Convert windows start_erl to take rootdir on command line Add command start_disabled to erlsrv Add global lock for erlsrv to avoid races Change start order so that service_event gets initialized before it's used Conflicts: erts/emulator/sys/win32/sys.c
2011-07-08Move init of smp rw mutex from init to sys_args to make sure that it is ↵Lukas Larsson
initialized before the first erts_sys_getenv call
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.
2011-03-11Update copyright yearsBjörn-Egil Dahlberg
2011-03-02Remove race in main thread stealing due to reading and writing to pipe from ↵Patrik Nyblom
same thread
2011-03-02Make MacOS (NS) wx use the main threadPatrik Nyblom
2011-02-25Merge branch 'rickard/poll-wake/OTP-9019' into devRickard Green
* rickard/poll-wake/OTP-9019: Simplify erts_poll_wait() wakeup logic
2011-02-25Simplify erts_poll_wait() wakeup logicRickard Green
2011-02-18HALFWORD ETS Fix copyright year in some source filesSverker Eriksson
2011-02-03HALFWORD ETS relative termsSverker Eriksson
In halfword emulator, make ETS use a variant of the internal term format that uses relative offsets instead of absolute pointers. This will allow storage in high memory (>4G). Preprocessor macros (like list_val_rel(TERM,BASE)) are used to make normal (fullword) emulator almost completely unchanged while still reusing most of the code.
2010-12-20Remove timer-thread implementationBjörn-Egil Dahlberg
2010-12-15Use new atomic types in emulatorRickard Green
2010-11-18Move cpu topology functionality into erl_cpu_topology.[ch]Rickard Green
2010-09-07Merge branch 'mk/net-dragonfly-bsd-patches' into devBjörn Gustavsson
* mk/net-dragonfly-bsd-patches: Remove unused variables Use proper install method Add support for DragonFly BSD Add support for NetBSD
2010-08-30Merge branch 'pan/list_to_float/OTP-7178' into devPatrik Nyblom
* pan/list_to_float/OTP-7178: Teach Unix sys_float.c to ignore underflow in list_to_float and return 0.0
2010-08-20Merge branch 'bjorn/solaris-fp-exception' into devBjörn Gustavsson
* bjorn/solaris-fp-exception: Solaris/x86: Handle floating point exceptions properly in driver threads
2010-08-17Solaris/x86: Handle floating point exceptions properly in driver threadsBjörn Gustavsson
On Solaris/x86, the floating point exceptions bits seems to be propagated to child threads, so if scheduler threads use floating points exceptions, also driver threads will have floating points exception enabled. The problem is that erts_thread_init_float() has not been called for driver threads, and because of that matherr() will crash when called. Fix matherr() so that it will work even if erts_thread_init_float() has not been called. This fix was suggested by Mikael Pettersson.
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