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2012-03-30Update copyright yearsBjörn-Egil Dahlberg
2012-01-23Fix on_load handling in modules loaded by code:load_binary/3Björn Gustavsson
In "13.4 Running a function when a module is loaded" in the Reference Manual, it is said that: A process that calls any function in a module whose on_load function has not yet returned will be suspended until the on_load function has returned. That did not work if the module was loaded using code:load_binary/3. Instead, the callers would get an 'undef' exception.
2011-11-23Avoid slow code loading of BEAM code in a hipe-enabled emulatorBjörn Gustavsson
On my Linux computer, building the entire Erlang/OTP system with hipe disabled took about 8 minutes. With hipe enabled, but without any native code, the build took about 23 minutes, i.e. more than 3 times slower. (The computer has 4 cores, and I used 'make -j6'.) On my eight-core Mac (running 'make -j10') there was only a slight slowdown when hipe was enabled. The culprit is hipe_unified_loader:post_beam_load/1, which will be called every time a module is loaded (even if the module contains no native code). If post_beam_load/1 is called in a hipe-enabled emulator, it will block multi-scheduling, even if no work needs to be done. Apparently the cost for blocking multi-scheduling can vary greatly, depending on the operating system and system load. As a quick and conservative fix, don't call post_beam_load/1 unless some native code has been previously loaded.
2011-09-29Update copyright yearsBjörn-Egil Dahlberg
2011-08-26code: Optimize purge/1 and soft_purge/1 using check_old_code/1Björn Gustavsson
While at it, eliminate an unnecessary use of throw/catch in the implementation of soft_purge/1.
2010-04-28kernel: Clean up as suggested by tidierKostis Sagonas
2010-03-07kernel: Add types and specsKostis Sagonas
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.
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.
2009-11-20The R13B03 release.OTP_R13B03Erlang/OTP