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2013-04-19Change the default encoding of Erlang files to UTF-8Hans Bolinder
2013-04-19Merge branch 'maint'Fredrik Gustafsson
2013-04-19fix excessive CPU consumption of timer_serverAliaksey Kandratsenka
I've found stdlib's timer to burn CPU without good reason. Here's what happens. The problem is that it sleeps in milliseconds but computes time in microseconds. And there is bug in code to compute milliseconds to sleep. It computes microseconds difference between now and nearest timer event and then does _truncating_ division by 1000. So on average it sleeps 500 microseconds _less than needed_. On wakeup its checks do I have timer tick that already occurred? No. Ok how much I need to sleep ? It does that bad computation again and gets 0 milliseconds. So next gen_server timeout happens right away only to find we're still before closest timer tick and to decide to sleep 0 milliseconds again. And again and again. This commit changes division to pick ceiling of ratio rather than floor. So that we always sleep not less then difference between now and closest event time.
2013-04-18Merge branch 'maint'Siri Hansen
2013-04-18Merge branch 'siri/doc-fnu-opts/OTP-10901' into maintSiri Hansen
* siri/doc-fnu-opts/OTP-10901: Add documentation of w, i and e addition to +fnu and +fna switches to erl
2013-04-17Add documentation of w, i and e addition to +fnu and +fna switches to erlSiri Hansen
These were documented in the stdlib user's guide, but not in the reference manual for erl. This has now been corrected.
2013-04-17Merge branch 'maint'Björn Gustavsson
* maint: Encode Erlang source files with non-ascii characters in UTF-8
2013-04-17Merge branch 'bjorn/fix-encoding/OTP-11041' into maintBjörn Gustavsson
* bjorn/fix-encoding/OTP-11041: Encode Erlang source files with non-ascii characters in UTF-8
2013-04-17Encode Erlang source files with non-ascii characters in UTF-8Björn Gustavsson
To ensure that 'master' compiles when we merge 'maint' to it, regardless of which encoding is default in 'master', all source files with non-ascii characters *must* have the encoding specified.
2013-04-15Update stdlib.appup.src for R17Siri Hansen
2013-04-15Merge branch 'maint'Fredrik Gustafsson
2013-04-15Merge branch 'jaf/fix-supervisor-multi-restart/OTP-11042' into maintFredrik Gustafsson
2013-04-15Merge branch 'maint'Fredrik Gustafsson
2013-04-15Merge branch 'lh/demonitor-flush/OTP-11039' into maintFredrik Gustafsson
* lh/demonitor-flush/OTP-11039: Use erlang:demonitor(Ref, [flush]) where applicable
2013-04-11Merge branch 'maint'Fredrik Gustafsson
2013-04-11Merge branch 'lh/otp-optims/OTP-11035' into maintFredrik Gustafsson
* lh/otp-optims/OTP-11035: Use erlang:demonitor's flush option on timeout Don't lookup the node unless required in gen:call/{3,4}
2013-04-11Merge branch 'maint'Fredrik Gustafsson
2013-04-11Merge branch 'sverk/dets_remove_test_otp_9607' into maintSverker Eriksson
* sverk/dets_remove_test_otp_9607: stdlib: Fix unstable testcase ets_SUITE:delete_large_named_table stdlib: Remove obsolete testcase dets_SUITE:otp_9607
2013-04-09Merge branch 'maint'Fredrik Gustafsson
2013-04-05Use erlang:demonitor(Ref, [flush]) where applicableLoïc Hoguin
2013-04-05Fixed broken links in sys.htmlFredrik Gustafsson
2013-04-04Merge branch 'maint'Fredrik Gustafsson
2013-04-04Merge branch 'sv/stdlib/sys-get-state/OTP-11013' into maintFredrik Gustafsson
* sv/stdlib/sys-get-state/OTP-11013: Removed ?line macro add sys:get_state/1,2 and sys:replace_state/2,3 update sys:get_status/2,3 documentation for gen_event
2013-04-04Fix rest_for_one and one_for_all restarting a child not terminatedJames Fish
In rest_for_one and one_for_all supervisors one child dying can cause multiple children to be restarted. Previously if the child that caused the restart is started successfully but another child fails to start, the supervisor would not terminate this child with the other successfully restarted children as no record of the pid was kept. Thus the supervisor would try to start this child again. This could lead to multiples of the same child or if the child is registered cause repeated attempts at starting this child - until the max restart threshold was reached. Now the child that failed to start becomes the restarting child, instead of staying with the same child, for the next restart attempt. This has the following side effects: 1) In one_for_all the new version of the child that original died is terminated before a restart attempt is made. 2) In rest_for_one all succesfully restarted children are not terminated and restarting continues from the child that failed to start.
2013-04-04Merge branch 'maint'Fredrik Gustafsson
2013-04-04Changed handshake from to_erl to run_erl, on behalf of shell searchFredrik Gustafsson
2013-04-03Removed ?line macroFredrik Gustafsson
2013-04-02add sys:get_state/1,2 and sys:replace_state/2,3Steve Vinoski
At Erlang Factory 2013 there was discussion during one of the talks about the sys:get_status functions and how useful they were for debugging. Geoff Cant mentioned it would be very useful if the sys module also provided functions to use while debugging to get just the state of a process and also to be able to replace the state of a process, and many others in the audience appeared to agree. The sys:get_state/1,2 functions return the state of a gen_server, gen_fsm, or gen_event process. The return value varies depending on the process type: process state for a gen_server, state name and state data for a gen_fsm, and handler module, handler id, and handler state for each handler registered in a gen_event process. The sys:replace_state/2,3 functions allow the state of a gen_server, gen_fsm, or gen_event process to be replaced with a new state. These functions take a function argument that updates or replaces the process state; using a function to change the state eliminates the race condition of first reading the state via sys:get_state/1 or sys:get_state/2, using its return value to create a new state, and then replacing the old state with the new state, since during that time the process might have received other calls or messages that could have changed its state. * For a gen_server process, the state replacement function takes the process state as an argument and returns a new state. * For a gen_fsm process, the state replacement function gets a tuple of {StateName, StateData} and returns a similar tuple that specifies a new state name, new state data, or both. * For a gen_event process, the state replacement function is called for each registered event handler. It gets a tuple {Module, Id, HandlerState} and returns a similar tuple that specifies the same Module and Id values but may specify a different value for HandlerState. If the state replacement function crashes or results in an error, the original state of a gen_server or gen_fsm process is maintained; if such a crash occurs for a gen_event process, the original state of the event handler for which the state replacement function was called is maintained, but the states of other event handlers of the same gen_event process may still be updated if no errors or crashes occur while replacing their states. Add documentation for sys:get_state/1,2 and sys:replace_state/2,3. The documentation explicitly notes that the functions are intended for use during debugging. Add new tests for these functions to gen_server_SUITE, gen_fsm_SUITE, and gen_event_SUITE.
2013-04-01Use erlang:demonitor's flush option on timeoutLoïc Hoguin
It is equivalent to the few lines removed, except more efficient.
2013-04-01Don't lookup the node unless required in gen:call/{3,4}Loïc Hoguin
Move some operations that aren't required for the happy path. The operations were small, so they shouldn't show a big difference in benchmarks except for systems with many active gen processes.
2013-03-30Merge branch 'maint'Hans Bolinder
* maint: Document erl_parse:abstract/2
2013-03-29update sys:get_status/2,3 documentation for gen_eventSteve Vinoski
Modify the documentation for the sys:get_status/2,3 functions to reflect that they also work on gen_event processes, and add a cross reference for gen_event:format_status/2 to go along with the existing cross references for gen_server and gen_fsm.
2013-03-29Document erl_parse:abstract/2Hans Bolinder
A bug has been fixed: when given the option {encoding,utf8} a list of floating point numbers (in the correct interval) was mistakenly returned as a string.
2013-03-29Merge branch 'maint'Hans Bolinder
* maint: Fix a bug in the Erlang scanner
2013-03-28Fix a bug in the Erlang scannerHans Bolinder
The scanner did not crash when a floating point number was encountered in the input string.
2013-03-27stdlib: Fix unstable testcase ets_SUITE:delete_large_named_tableSverker Eriksson
Remove the call trace from this testcase as we cannot guarantee named table to be gone until ets:delete returns anyway.
2013-03-27stdlib: Remove obsolete testcase dets_SUITE:otp_9607Sverker Eriksson
2013-03-26Merge branch 'maint'Dan Gudmundsson
2013-03-26Merge branch 'dgud/testcase_fixes' into maintDan Gudmundsson
* dgud/testcase_fixes: Fix timers mnesia: Decrease test times Add debug printouts wx: Fix failing testcases stdlib: Ignore symlink tests on windows
2013-03-19Merge branch 'maint'Hans Bolinder
* maint: Let escript recognize an encoding comment on the second line
2013-03-19Let escript recognize an encoding comment on the second lineHans Bolinder
The manual says that an Emacs directive can be placed on the second line. With this patch that directive is also recognized when selecting encoding of the script.
2013-03-19Merge branch 'maint'Hans Bolinder
* maint: Fix a test case Fix a test case Fix a test case bug Fix a test case bug Remove ?line from dets_SUITE.erl Adjust dets.erl to cope with an evil test case Correct a disk_log testcase
2013-03-18Fix a test case bugHans Bolinder
shell_SUITE: Calling i() did not work because if there are more than 100 processes c:i() will go into pager mode, asking for input.
2013-03-18Fix a test case bugHans Bolinder
io_proto_SUITE: node names containing some '-' did not work.
2013-03-18Remove ?line from dets_SUITE.erlHans Bolinder
2013-03-18Adjust dets.erl to cope with an evil test caseHans Bolinder
The test case deletes a Dets process while it is repairing a file. Another client waiting for the Dets process to reply then kicks in and repairs the file. Apparently the temporary file was still open, resulting in an eacces error on Windows.
2013-03-13Merge branch 'maint'Fredrik Gustafsson
2013-03-13Merge branch 'mh/supervisor-doc/OTP-10938' into maintFredrik Gustafsson
* mh/supervisor-doc/OTP-10938: Delete obsolete note about simple-one-for-one supervisor
2013-03-12Merge branch 'maint'Hans Bolinder
* maint: [debugger] Add an option 'Strings' stdlib: Remove race in ets_SUITE:delete_large_tab stdlib: Remove race in ets_SUITE:delete_large_named_table
2013-03-12Merge branch 'sverk/test-cuddling' into maintSverker Eriksson
* sverk/test-cuddling: stdlib: Remove race in ets_SUITE:delete_large_tab stdlib: Remove race in ets_SUITE:delete_large_named_table