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OTP-8475 Driver threads, such as async threads, using port data locks
peeked at the port status field without proper locking when
looking up the driver queue.
OTP-8487 A call to the BIF unregister(RegName) when a port had the
name RegName registered in the runtime system without SMP
support caused a runtime system crash. (Thanks to Per Hedeland
for the bugfix and test case.)
OTP-8591 Fix memory management bug causing crash of non-SMP emulator
with async threads enabled. The bug did first appear in
R13B03.
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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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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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