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2020-03-25Fix futex_benchmark.Jamie Liu
- Fix definitions of Futex* wrappers. - Correctly handle glibc syscall() (which returns -1 and sets errno instead of returning the raw syscall return value). - De-parameterize FutexWaitBitset, which was apparently intended to test with deadlines of between 0 and 100000 nanoseconds after the Unix epoch, but was broken due to the preceding two issues. - Use wall time to measure the durations of tests that are expected to block (and thus stop accumulating CPU time). - Require 5s for all tests to improve robustness in the presence of sentry GC. - Remove FutexContend and FutexContendDeadline; it's unclear what these are supposed to measure, given that (1) FutexLock is unrealistically inefficient and (2) the benchmark rewards slow scheduling (since this reduces contention). PiperOrigin-RevId: 302925246
2020-03-09perf/signal: rewrite code in assembly to avoid compiler optimizationsAndrei Vagin
Without this change, the assembly code of this test compiled without optimizations: mov -0x150(%rbp),%rax movl $0x77777777,(%rax) lea -0x128(%rbp),%rax with optimizations: movl $0x77777777,0x0 This code doesn't work properly, because the test changes rax in the segv handler. PiperOrigin-RevId: 299896117
2020-02-24Add default behavior for gtest runner.Adin Scannell
PiperOrigin-RevId: 297009116
2020-02-19Add basic microbenchmarks.Adin Scannell
PiperOrigin-RevId: 296104390