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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.
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Debug trace output for connection activity could be enabled
setting the trace level as an integer to the EI_TRACELEVEL
environment variable. This option could also be read and set from
a running program using ei_get_tracelevel(void) and
ei_set_tracelevel(int).
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NIF function prototypes in order to allow more than 3 function
arguments. Also an incompatible change in the return value of
erlang:load_nif/2. Added support for references, floats and term
comparison in NIFs. Read more in the documentation of erl_nif and
erlang:load_nif/2.
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Debug trace output for connection activity could be enabled
setting the trace level as an integer to the EI_TRACELEVEL
environment variable. This option could also be read and set from
a running program using ei_get_tracelevel(void) and
ei_set_tracelevel(int).
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* dgud/wx_filedialog_bug:
The generated updates, of the previous fix.
Fixed generation of wxFileDialog:getPaths/1.
OTP-8330 Corrected incorrectly generated wxFileDialog:getPaths/1. Reported
by Jason/hornja.
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* sv/sys_get_status:
Teach sys:get_status/1,2 to call Mod:format_status/2
gen_fsm: Fix format_status/2 to handle Pids
OTP-8324 The ability for the gen_server and gen_fsm callback modules to
format their own state for display under the sys:get_status/1,2
calls has been restored and documented. (Thanks to Steve
Vinoski.)
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erl_eterm.xml.
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In the transition from SGML to XML (several releases ago),
bugs were introduced in the documentation, for instance
"\n" replaced by newlines. Correct those bugs.
Also correct double backslashes. They seem to have been introduced very
early in the development of OTP. According to Lars they "solved" a bug
in the generation of HTML &c. Now that standard tools are used instead
of docbuilder, the bug has become visible.
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Restore the ability for gen_server and gen_fsm callback
modules to format their own state for display under the
sys:get_status/1,2 calls.
This ability is extremely useful for new behavior modules
based on gen_server or gen_fsm, so that they can display
their status in a more meaningful way than just dumping
the state record. It is also generally useful for applications
wanting to display their gen_server or gen_fsm callback module
state in something other than the default manner.
Also document the previously undocumented the
gen_server:format_status/2 and gen_fsm:format_status/2 optional
callback functions that, if exported by the callback module, are
invoked when sys:get_status/1,2 are called.
Add unit tests to ensure that format_status/2 functions exported
from a gen_fsm callback module and a gen_server callback module
are called when sys:get_status/1,2 are called.
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short-circuit expressions in guards.
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* bg/on_load-types:
Add type information for on_load
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gen_fsm:format_status/2 currently crashes if Name in the process
state is a Pid.
Handle Name in the same way as in gen_server:format_status/2
to eliminate the crash.
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* refs/remotes/origin/dgud/array_tests:
Added more tests for array:reset/2.
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The on_load feature introduced in R13B03 adds two new internal
BIFs and extends the return value of erlang:load_module/2.
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Code coverage was bad for my new optimizations.
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