m2-internship/libunwind-eh_elf

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Author	SHA1	Message	Date
Arun Sharma	d3ddc9b96b	Cap the runtime for rs-race	2010-03-10 22:57:43 -08:00
Paul Pluzhnikov	9626d66019	Fix a race condition in dwarf unwinding. Original code was accessing rs_cache memory without holding a lock in some cases. If there was sufficient cache pressure, entry being accessed may be overwritten by another thread, resulting in a data race. We now make a thread local copy of the data, before releasing the lock. If we end up supporting UNW_CACHE_PER_THREAD properly in the future, this memcpy should be unnecessary.	2009-11-24 15:18:48 -08:00

Author

SHA1

Message

Date

Arun Sharma

d3ddc9b96b

Cap the runtime for rs-race

2010-03-10 22:57:43 -08:00

Paul Pluzhnikov

9626d66019

Fix a race condition in dwarf unwinding.

Original code was accessing rs_cache memory without holding a lock
in some cases. If there was sufficient cache pressure, entry being
accessed may be overwritten by another thread, resulting in a data
race.

We now make a thread local copy of the data, before releasing the
lock. If we end up supporting UNW_CACHE_PER_THREAD properly
in the future, this memcpy should be unnecessary.

2009-11-24 15:18:48 -08:00

2 commits