Commit 6f418c11e1
lib/std/c/linux.zig
@@ -371,3 +371,19 @@ pub const dirent64 = struct {
d_type: u8,
d_name: [256]u8,
};
+
+pub const MPOL = struct {
+ pub const F_NODE = 1 << 0;
+ pub const F_ADDR = 1 << 1;
+ pub const F_MEMS_ALLOWED = 1 << 2;
+ /// flags for SYS_mbind
+ pub const MF_STRICT = 1 << 0;
+ pub const MF_MOVE = 1 << 1;
+ pub const MF_MOVE_ALL = 1 << 2;
+ pub const MF_LAZY = 1 << 3;
+ pub const MF_INTERNAL = 1 << 4;
+ pub const MF_VALID = MPOL.MF_STRICT | MPOL.MF_MOVE | MPOL.MOVE_ALL;
+};
+
+pub extern "c" fn getcpu(cpu: *c_uint, node: *c_uint) c_int;
+pub extern "c" fn sched_getcpu() c_int;
lib/std/os/linux.zig
@@ -1519,6 +1519,22 @@ pub fn sched_getaffinity(pid: pid_t, size: usize, set: *cpu_set_t) usize {
return 0;
}
+pub fn getcpu(cpu: *u32, node: *u32) usize {
+ return syscall3(.getcpu, cpu, node, null);
+}
+
+pub fn sched_getcpu() usize {
+ var cpu: u32 = undefined;
+ const rc = syscall3(.getcpu, &cpu, null, null);
+ if (@bitCast(isize, rc) < 0) return rc;
+ return @intCast(usize, cpu);
+}
+
+/// libc has no wrapper for this syscall
+pub fn mbind(addr: ?*anyopaque, len: u32, mode: i32, nodemask: *const u32, maxnode: u32, flags: u32) usize {
+ return syscall6(.mbind, addr, len, mode, nodemask, maxnode, flags);
+}
+
pub fn epoll_create() usize {
return epoll_create1(0);
}