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Currently make:files will fail with the atom 'error' and
no message when the input (.erl) file is unreadable or the
output (.beam) file is unwritable. This differs from erlc
which will print a useful error message, or when possible,
remove the unwritable output file and continue successfully.
This change removes the unnecessary checks on the files when
make:files is called and allows the error checking to be
done in compile:file, where the error messages are produced.
It does not affect the return value.
In particular this resolves the mysterious problem of make:files
failing but erlc succeeding, caused by an unwritable (usually
root owned) beam file in an otherwise writable build directory.
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Xref has been updated to use the re module instead of the deprecated regexp
module.
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A race condition affecting Cover has been removed.
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* egil/lcnt:
Add test suite for lcnt in tools
Add lcnt:rt_opt/1 bindings to erts_debug
Add runtime option to enable/disable lcnt stats
Add auto width on string output
Add lcnt documentation
Add lock profiling tool
OTP-8424 Add lock profiling tool.
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.
- Add erts_debug:lock_counters({copy_save, bool()}). This option
enables or disables statistics saving for destroyed processes and
ets-tables. Enabling this might consume a lot of memory.
- Add id-numbering for lock classes which is otherwise undefined.
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Runtime options for copy_save.
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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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bug was introduced in R13B03. (Thanks to Matthew Sackman.)
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