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Documentation for the lock profiling tool
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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.
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* sc/sctp-connect-nowait:
Implement a non-blocking SCTP connect
OTP-8414 There are new gen_sctp:connect_init/* functions that initiate an
SCTP connection without blocking for the result. The result is
delivered asynchronously as an sctp_assoc_change event. (Thanks
to Simon Cornish.)
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* gc/hipe_darwin_amd64:
Fix hipe memory allocation problems on darwin/amd64
Porting x86 darwin fixes to amd64 darwin hipe asm/m4 code
Automatically enable hipe for darwin/amd64 builds
Allow configure to enable_hipe for darwin/amd64 builds
OTP-8416 HiPE now works in the 64-bit emulator on Mac OS X. (Thanks to
Geoff Cant.)
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tile-cc 2.0.1.78377 when compiling the runtime system.
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improvements.
Most notable:
Lots of cross compilation improvements. The old cross compilation
support was more or less non-existing as well as broken. Please,
note that the cross compilation support should still be
considered as experimental. Also note that old cross compilation
configurations cannot be used without modifications. For more
information on cross compiling Erlang/OTP see the
$ERL_TOP/xcomp/README file.
Support for staged install using <url
href="http://www.gnu.org/prep/standards/html_node/DESTDIR.html">D
ESTDIR</url>. The old broken INSTALL_PREFIX has also been fixed.
For more information see the $ERL_TOP/README file.
Documentation of the release target of the top Makefile. For more
information see the $ERL_TOP/README file.
make install now by default creates relative symbolic links
instead of absolute ones. For more information see the
$ERL_TOP/README file.
$ERL_TOP/configure --help=recursive now works and prints help for
all applications with configure scripts.
Doing make install, or make release directly after make all no
longer triggers miscellaneous rebuilds.
Existing bootstrap system is now used when doing make install, or
make release without a preceding make all.
The crypto and ssl applications use the same runtime library path
when dynamically linking against libssl.so and libcrypto.so. The
runtime library search path has also been extended.
The configure scripts of erl_interface and odbc now search for
thread libraries and thread library quirks the same way as erts
do.
The configure script of the odbc application now also looks for
odbc libraries in lib64 and lib/64 directories when building on a
64-bit system.
The config.h.in file in the erl_interface application is now
automatically generated in instead of statically updated which
reduces the risk of configure tests without any effect.
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* po/odbc-update-delete-no-rows:
SQL_NO_DATA and SQLSTATE 00000 indicate success for updates/deletes that affect no rows
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* ta/code_clash_ez:
code_SUITE: add missing is_list(Config) guard
Add tests for code:clash/0
Fix handling of archive (.ez) files in code:clash/0
OTP-8413 code:clash/0 now looks inside archives (.ez files). (Thanks to
Tuncer Ayaz.)
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HiPE on amd64 needs to be able to allocate memory in the 0x20000000+
range so that compiled code will be addressable with 32bit pointers
(when sign extended). By default, when building 64bit executables on
OS X, PAGEZERO occupies the first 4GB of virtual memory. The PAGEZERO
segment cannot be mmap(ed) or vm_allocate(d) into.
To avoid this problem we use the -pagezero_size linker flag to reduce
the size of PAGEZERO and free up the 0x20000000+ space.
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Compared to GNU as, Mac OS X's assembler uses different directives for
text and global sections, and omits type and size directives
entirely. We also need to mangle symbol names in order to allow
linking with C object files.
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This patch adds a new set of functions - gen_sctp:connect_init/* that initiate
an SCTP connection without blocking for the result. The result is delivered
asynchronously as an sctp_assoc_change event.
The new functions have the same API as documented for gen_sctp:connect/* with
the following exceptions:
* Timeout is only used to supervise resolving Addr (the peer address)
* The possible return values are ok | {error, posix()}
The caller application is responsible for receiving the #sctp_assoc_change{}
event and correctly determining the connect it originated from (for example,
by examining the remote host and/or port). The application should have at
least {active, once} or use gen_sctp:recv to retrieve the connect result.
The implementation of gen_sctp:connect suffers from a number of
shortcomings which the user may avoid by using gen_sctp:connect_init and
adding code to receive the connect result.
First, irrespective of the Timeout value given to gen_sctp:connect, the OS
attempts and retries the SCTP INIT according to various kernel parameters. If
the Timeout value is shorter than the entire attempt then the application will
still receive an sctp_assoc_change event after the {error, timeout} is
returned from the initial call. This could be somewhat confusing (either to
the application or the designer!) especially if the status is
comm_up. Subsequent calls to connect before the OS has finished this process
return {error, ealready} which may also be counter-intuitive.
Second, there is a race-condition (documented in comments in inet_sctp.erl)
that can cause the wrong sctp_assoc_change record to be returned to an
application calling gen_sctp:connect. The race seriously affects connection
attempts when using one-to-many sockets.
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Add first batch of tests for code:clash/0.
Signed-off-by: Tuncer Ayaz <[email protected]>
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* dgud/wx_list_ctrl:
Generate without trailing spaces
Fix correct starting copyright year
Do not emit trailing whitespace
Added tests for wxListCtrl:getItem/2.
Added wxListCtrl:getEditCtrl (not available on Mac)
OTP-8408 Added wxListCtrl:getEditCtrl/1 (not available on Mac).
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* egil/gitignore:
Ignore files generated when running/building tests
Update .gitignore files
OTP-8411: egil/gitignore
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code:clash/0 did not take into account .ez files
when listing contents of code path entries.
Using erl_prim_loader:list_dir/1 instead of
file:list_dir/1 fixes the problem.
Signed-off-by: Tuncer Ayaz <[email protected]>
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configuration parameter shell_prompt_func can be used for
customizing the Erlang shell prompt.
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There was a small typo in the doc function clause of ext_mod_dep.
Signed-off-by: Tuncer Ayaz <[email protected]>
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invoking mnesia:sync_transaction/[1,2]. Thanks Igor Ribeiro
Sucupira.
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improvements.
Most notable:
Lots of cross compilation improvements. The old cross compilation
support was more or less non-existing as well as broken. Please,
note that the cross compilation support should still be
considered as experimental. Also note that old cross compilation
configurations cannot be used without modifications. For more
information on cross compiling Erlang/OTP see the
$ERL_TOP/xcomp/README file.
Support for staged install using <url
href="http://www.gnu.org/prep/standards/html_node/DESTDIR.html">D
ESTDIR</url>. The old broken INSTALL_PREFIX has also been fixed.
For more information see the $ERL_TOP/README file.
Documentation of the release target of the top Makefile. For more
information see the $ERL_TOP/README file.
make install now by default creates relative symbolic links
instead of absolute ones. For more information see the
$ERL_TOP/README file.
$ERL_TOP/configure --help=recursive now works and prints help for
all applications with configure scripts.
Doing make install, or make release directly after make all no
longer triggers miscellaneous rebuilds.
Existing bootstrap system is now used when doing make install, or
make release without a preceding make all.
The crypto and ssl applications use the same runtime library path
when dynamically linking against libssl.so and libcrypto.so. The
runtime library search path has also been extended.
The configure scripts of erl_interface and odbc now search for
thread libraries and thread library quirks the same way as erts
do.
The configure script of the odbc application now also looks for
odbc libraries in lib64 and lib/64 directories when building on a
64-bit system.
The config.h.in file in the erl_interface application is now
automatically generated in instead of statically updated which
reduces the risk of configure tests without any effect.
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Mattsson!
For the time being it is still possible to use the old GS based
version of the tool, but it is deprecated. The wxWidgets based
version is started by default.
A new tutorial has been added to the documentation. It is based
on Jayson Vantuyl's article
http://souja.net/2009/04/making-sense-of-erlangs-event-tracer.htm
l.
The functions et:trace_me/4 and et:trace_me/5 has been introduced
in order to replace the deprecated functions et:report_event/4
and et:report_event/5. Hopefully the new names makes it a little
more obvious what the intended usage of the functions are.
A print function has been added to the GUI, in order to enable
printing of sequence charts.
More functionality for hiding unwanted events has been added to
the GUI.
The max_events, hide_unknown and display_mode configuration
parameters to et_viewer is not used any more. Now the event cache
in the Viewer only contains those events that actually are
displayed in the GUI.
Some minor bugs has been fixed. Such as a cleaning up trace
patterns at termination and displaying events with detail level
100.
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* is/mnesia-send-compressed:
Add option to compress data when copying tables between Mnesia nodes
OTP-8406 Igor Ribeiro Sucupira added the option to compress data when
copying tables between Mnesia nodes.
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* jb/atom-table-size:
Add the +t emulator option to change the maximum number of atoms
OTP-8405 There is a new +t emulator option for changing the maximum number
of atoms. (Thanks to Julien Barbot.)
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Mattsson!
For the time being it is still possible to use the old GS based
version of the tool, but it is deprecated. The wxWidgets based
version is started by default.
A new tutorial has been added to the documentation. It is based
on Jayson Vantuyl's article
http://souja.net/2009/04/making-sense-of-erlangs-event-tracer.htm
l.
The functions et:trace_me/4 and et:trace_me/5 has been introduced
in order to replace the deprecated functions et:report_event/4
and et:report_event/5. Hopefully the new names makes it a little
more obvious what the intended usage of the functions are.
A print function has been added to the GUI, in order to enable
printing of sequence charts.
More functionality for hiding unwanted events has been added to
the GUI.
The max_events, hide_unknown and display_mode configuration
parameters to et_viewer is not used any more. Now the event cache
in the Viewer only contains those events that actually are
displayed in the GUI.
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erlang:system_flag(multi_scheduling, block | unblock) could
deadlock the runtime system.
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It is now possible to increase or decrease the maximum number of atoms
the VM can handle. The default value is 1048576 (1024*1024).
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* cf/epp-macro-overloading:
yecc_SUITE: Adjustment for modified error tuple
epp_SUITE: Increase code coverage
Minor corrections and clean-ups
documentation: Macros overloading partly rewritten
update the documentation on preprocessor in the reference manual
epp: change rules to choose the right version of a macro
epp: Add support of macros overloading
epp: fix bug in the function scan_undef
OTP-8388 Macros overloading has been implemented. (Thanks to Christopher
Faulet.)
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* sf/erl_match-longlong:
erl_interface: Allow erl_match() to match ERL_LONGLONG and ERL_U_LONGLONG terms
OTP-8400 Allow erl_match() to match ERL_LONGLONG and ERL_U_LONGLONG terms
(Thanks to Scott Lystig Fritchie).
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Optionally using data compression for copying Mnesia tables allows
the system to be tuned to eliminate network bottlenecks from
deployments where enough CPU is available to use zlib.
With this patch, running erl -mnesia send_compressed <level>
will enable compression for sending tables between nodes. The
compression level can be any integer in [0, 9], with 0 (the
default) meaning no compression (exactly the previous behaviour)
and 9 being the highest compression level.
To set any non-zero compression level at the sender, both nodes
must have the updated Mnesia modules (the receiver will work
according to the sender's configuration).
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