#include <string.h>
#endif
+#if defined(darwin_HOST_OS)
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#endif
+
#if !defined(HAVE_PTHREAD_H)
#error pthreads.h is required for the threaded RTS on Posix platforms
#endif
#include <sched.h>
#endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#if defined(darwin_HOST_OS)
+#include <mach/mach.h>
+#endif
+
/*
* This (allegedly) OS threads independent layer was initially
* abstracted away from code that used Pthreads, so the functions
nproc = sysconf(_SC_NPROCESSORS_ONLN);
#elif defined(HAVE_SYSCONF) && defined(_SC_NPROCESSORS_CONF)
nproc = sysconf(_SC_NPROCESSORS_CONF);
+#elif defined(darwin_HOST_OS)
+ size_t size = sizeof(nat);
+ if(0 != sysctlbyname("hw.ncpu",&nproc,&size,NULL,0))
+ nproc = 1;
#else
nproc = 1;
#endif
return nproc;
}
+#if defined(HAVE_SCHED_H) && defined(HAVE_SCHED_SETAFFINITY)
// Schedules the thread to run on CPU n of m. m may be less than the
// number of physical CPUs, in which case, the thread will be allowed
// to run on CPU n, n+m, n+2m etc.
void
setThreadAffinity (nat n, nat m)
{
-#if defined(HAVE_SCHED_H) && defined(HAVE_SCHED_SETAFFINITY)
nat nproc;
cpu_set_t cs;
nat i;
nproc = getNumberOfProcessors();
CPU_ZERO(&cs);
for (i = n; i < nproc; i+=m) {
- CPU_SET(n, &cs);
+ CPU_SET(i, &cs);
}
sched_setaffinity(0, sizeof(cpu_set_t), &cs);
-#endif
}
+#elif defined(darwin_HOST_OS) && defined(THREAD_AFFINITY_POLICY)
+// Schedules the current thread in the affinity set identified by tag n.
+void
+setThreadAffinity (nat n, nat m GNUC3_ATTRIBUTE(__unused__))
+{
+ thread_affinity_policy_data_t policy;
+
+ policy.affinity_tag = n;
+ thread_policy_set(mach_thread_self(),
+ THREAD_AFFINITY_POLICY,
+ (thread_policy_t) &policy,
+ THREAD_AFFINITY_POLICY_COUNT);
+}
+
+#else
+void
+setThreadAffinity (nat n GNUC3_ATTRIBUTE(__unused__),
+ nat m GNUC3_ATTRIBUTE(__unused__))
+{
+}
+#endif
+
#else /* !defined(THREADED_RTS) */
int