1*33de042dSApple OSS Distributions /* 2*33de042dSApple OSS Distributions * mpsc: test the MPSC interface 3*33de042dSApple OSS Distributions */ 4*33de042dSApple OSS Distributions 5*33de042dSApple OSS Distributions #ifdef T_NAMESPACE 6*33de042dSApple OSS Distributions #undef T_NAMESPACE 7*33de042dSApple OSS Distributions #endif 8*33de042dSApple OSS Distributions 9*33de042dSApple OSS Distributions #include <darwintest.h> 10*33de042dSApple OSS Distributions #include <sys/sysctl.h> 11*33de042dSApple OSS Distributions 12*33de042dSApple OSS Distributions T_GLOBAL_META(T_META_NAMESPACE("xnu.mpsc"), 13*33de042dSApple OSS Distributions T_META_RUN_CONCURRENTLY(true)); 14*33de042dSApple OSS Distributions 15*33de042dSApple OSS Distributions T_DECL(pingpong, "mpsc_pingpong", T_META_ASROOT(true)) 16*33de042dSApple OSS Distributions { 17*33de042dSApple OSS Distributions uint64_t count = 100 * 1000, nsecs = 0; 18*33de042dSApple OSS Distributions size_t nlen = sizeof(nsecs); 19*33de042dSApple OSS Distributions int error; 20*33de042dSApple OSS Distributions 21*33de042dSApple OSS Distributions error = sysctlbyname("kern.mpsc_test_pingpong", &nsecs, &nlen, 22*33de042dSApple OSS Distributions &count, sizeof(count)); 23*33de042dSApple OSS Distributions T_ASSERT_POSIX_SUCCESS(error, "sysctlbyname"); 24*33de042dSApple OSS Distributions T_LOG("%lld asyncs in %lld ns (%g us/async)", count, nsecs, 25*33de042dSApple OSS Distributions (nsecs / 1e3) / count); 26*33de042dSApple OSS Distributions } 27