1*aca3beaaSApple OSS Distributions /* 2*aca3beaaSApple OSS Distributions * mpsc: test the MPSC interface 3*aca3beaaSApple OSS Distributions */ 4*aca3beaaSApple OSS Distributions 5*aca3beaaSApple OSS Distributions #ifdef T_NAMESPACE 6*aca3beaaSApple OSS Distributions #undef T_NAMESPACE 7*aca3beaaSApple OSS Distributions #endif 8*aca3beaaSApple OSS Distributions 9*aca3beaaSApple OSS Distributions #include <darwintest.h> 10*aca3beaaSApple OSS Distributions #include <sys/sysctl.h> 11*aca3beaaSApple OSS Distributions 12*aca3beaaSApple OSS Distributions T_GLOBAL_META(T_META_NAMESPACE("xnu.mpsc"), 13*aca3beaaSApple OSS Distributions T_META_RUN_CONCURRENTLY(true)); 14*aca3beaaSApple OSS Distributions 15*aca3beaaSApple OSS Distributions T_DECL(pingpong, "mpsc_pingpong", T_META_ASROOT(true)) 16*aca3beaaSApple OSS Distributions { 17*aca3beaaSApple OSS Distributions uint64_t count = 100 * 1000, nsecs = 0; 18*aca3beaaSApple OSS Distributions size_t nlen = sizeof(nsecs); 19*aca3beaaSApple OSS Distributions int error; 20*aca3beaaSApple OSS Distributions 21*aca3beaaSApple OSS Distributions error = sysctlbyname("kern.mpsc_test_pingpong", &nsecs, &nlen, 22*aca3beaaSApple OSS Distributions &count, sizeof(count)); 23*aca3beaaSApple OSS Distributions T_ASSERT_POSIX_SUCCESS(error, "sysctlbyname"); 24*aca3beaaSApple OSS Distributions T_LOG("%lld asyncs in %lld ns (%g us/async)", count, nsecs, 25*aca3beaaSApple OSS Distributions (nsecs / 1e3) / count); 26*aca3beaaSApple OSS Distributions } 27