add pthread_setaffinity_np and pthread_getaffinity_np functions

1 files changed, 26 insertions, 0 deletions

diff --git a/src/sched/affinity.c b/src/sched/affinity.c
new file mode 100644
index 00000000..3b402111
--- /dev/null
+++ b/src/sched/affinity.c
@@ -0,0 +1,26 @@
+#define _GNU_SOURCE
+#include <sched.h>
+#include "pthread_impl.h"
+#include "syscall.h"
+
+int sched_setaffinity(pid_t tid, size_t size, const cpu_set_t *set)
+{
+	return syscall(SYS_sched_setaffinity, tid, size, set);
+}
+
+int pthread_setaffinity_np(pthread_t td, size_t size, const cpu_set_t *set)
+{
+	return syscall(SYS_sched_setaffinity, td->tid, size, set);
+}
+
+int sched_getaffinity(pid_t tid, size_t size, cpu_set_t *set)
+{
+	long ret = __syscall(SYS_sched_getaffinity, tid, size, set);
+	if (ret > 0) ret = 0;
+	return __syscall_ret(ret);
+}
+
+int pthread_getaffinity_np(pthread_t td, size_t size, cpu_set_t *set)
+{
+	return sched_getaffinity(td->tid, size, set);
+}