7 commits

Author	SHA1	Message	Date
David Vašek	aacd827f71	tests/atomic: lower the iteration counts with spinlock-emulated atomics	2024-12-12 20:21:50 +01:00
Jan Hák	e53c99d3cb	tests: fix usage of new atomic in code -- test_atomic.c	2024-12-11 17:36:20 +01:00
David Vašek	80e28bccda	tests/atomic: silence false positive Coverity warning (missing lock)	2024-05-06 14:34:51 +02:00
David Vašek	3f2f89ade1	tests/atomic: workaround for a GCC optimization bug on i386 ... With -O1 and higher, the test of atomic_exchange_explicit() doesn't work right for 64-bit variables on i386 (and possibly other 32-bit architectures). It seems that atomic_exchange_explicit() doesn't exchange 64-bit values properly when it's used in a loop and GCC compiler optimization is turned on. As a workaround, we are testing ATOMIC_XCHG on a pointer size of the given architecture. It isn't sure yet, if atomic_exchange_explicit() is safe for 64-bit variables with GCC on i386 when not used in a loop. Therefore, ATOMIC_XCHG should not be used on general 64-bit variables until this GCC bug is solved. Clang and gcc -O0 don't seem to be affected by this issue.	2024-05-06 14:34:51 +02:00
David Vašek	b323b0c5d9	tests/atomic: finish the thread early once an invalid value occurs	2024-05-06 14:34:51 +02:00
David Vašek	c994bbe175	contrib/atomic: add an atomic exchange macro	2024-04-30 14:18:43 +02:00
David Vašek	3f37ed2940	contrib: universal atomic operations	2023-11-14 16:27:57 +01:00