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Aug 10, 2010

  1. Rickard Green

    Rewrite ethread library

    Large parts of the ethread library have been rewritten. The
    ethread library is an Erlang runtime system internal, portable
    thread library used by the runtime system itself.
    
    Most notable improvement is a reader optimized rwlock
    implementation which dramatically improve the performance of
    read-lock/read-unlock operations on multi processor systems by
    avoiding ping-ponging of the rwlock cache lines. The reader
    optimized rwlock implementation is used by miscellaneous
    rwlocks in the runtime system that are known to be read-locked
    frequently, and can be enabled on ETS tables by passing the
    `{read_concurrency, true}' option upon table creation. See the
    documentation of `ets:new/2' for more information.
    
    The ethread library can now also use the libatomic_ops library
    for atomic memory accesses. This makes it possible for the
    Erlang runtime system to utilize optimized atomic operations
    on more platforms than before. Use the
    `--with-libatomic_ops=PATH' configure command line argument
    when specifying where the libatomic_ops installation is
    located. The libatomic_ops library can be downloaded from:
    http://www.hpl.hp.com/research/linux/atomic_ops/
    
    The changed API of the ethread library has also caused
    modifications in the Erlang runtime system. Preparations for
    the to come "delayed deallocation" feature has also been done
    since it depends on the ethread library.
    
    Note: When building for x86, the ethread library will now use
    instructions that first appeared on the pentium 4 processor. If
    you want the runtime system to be compatible with older
    processors (back to 486) you need to pass the
    `--enable-ethread-pre-pentium4-compatibility' configure command
    line argument when configuring the system.

Mar 22, 2010

  1. Rickard Green

    OTP-8512 Add Erlangish MarkDown to Erlangish XML support

    The INSTALL.md, INSTALL-CROSS.md, and INSTALL-WIN32.md "readme files" are
    now included in both the HTML and the PDF documentation.
    authored March 22, 2010 Erlang/OTP committed March 22, 2010

Feb 18, 2010

  1. Rickard Green

    OTP-8449 Documentation improvements.

              The most important "readme" files now use Markdown notation. HTML
              versions of these files are now also automatically generated and
              included in the HTML documentation.
    
              - Building and Installing Erlang/OTP - $ERL_TOP/INSTALL.md
              (previously known as $ERL_TOP/README).
    
              - Cross Compiling Erlang/OTP - $ERL_TOP/INSTALL-CROSS.md.
    
              - How to Build Erlang/OTP on Windows - $ERL_TOP/INSTALL-WIN32.md
              (previously known as $ERL_TOP/README.win32).
    authored February 18, 2010 Erlang/OTP committed February 18, 2010
  2. Rickard Green

    OTP-8449 Documentation improvements.

              The most important "readme" files now use Markdown notation. HTML
              versions of these files are now also automatically generated and
              included in the HTML documentation.
    
              - Building and Installing Erlang/OTP - $ERL_TOP/INSTALL.md
              (previously known as $ERL_TOP/README).
    
              - Cross Compiling Erlang/OTP - $ERL_TOP/INSTALL-CROSS.md.
    
              - How to Build Erlang/OTP on Windows - $ERL_TOP/INSTALL-WIN32.md
              (previously known as $ERL_TOP/README.win32).
    authored February 18, 2010 Erlang/OTP committed February 18, 2010

Feb 16, 2010

  1. Rickard Green

    OTP-8449 Documentation improvements.

              The most important "readme" files now use Markdown notation. HTML
              versions of these files are now also automatically generated and
              included in the HTML documentation.
    
              - Building and Installing Erlang/OTP - $ERL_TOP/INSTALL.md
              (previously known as $ERL_TOP/README).
    
              - Cross Compiling Erlang/OTP - $ERL_TOP/INSTALL-CROSS.md.
    
              - How to Build Erlang/OTP on Windows - $ERL_TOP/INSTALL-WIN32.md
              (previously known as $ERL_TOP/README.win32).
    authored February 16, 2010 Erlang/OTP committed February 16, 2010
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