add pthread_setaffinity_np and pthread_getaffinity_np functions

include/pthread.h

@@ -210,6 +210,9 @@ void _pthread_cleanup_pop(struct __ptcb *, int);
 #define pthread_cleanup_pop(r) _pthread_cleanup_pop(&__cb, (r)); } while(0)
 
 #ifdef _GNU_SOURCE
+struct cpu_set_t;
+int pthread_getaffinity_np(pthread_t, size_t, struct cpu_set_t *);
+int pthread_setaffinity_np(pthread_t, size_t, const struct cpu_set_t *);
 int pthread_getattr_np(pthread_t, pthread_attr_t *);
 #endif
 

src/sched/sched_getaffinity.c → src/sched/affinity.c

 #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);
+}

src/sched/sched_setaffinity.c

-#define _GNU_SOURCE
-#include <sched.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);
-}