From 86a5edca6238f4c9b861931e40d8cbe005568819 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Mon, 31 Jul 2023 10:58:03 -0700
Subject: [PATCH] Revert "std.os: implementing sched_setaffinity wrapper for
 freebsd"

This reverts commit 05268bb9677ef0545cca6c788169b2707842dc8d.
---
 lib/std/c/freebsd.zig | 31 -------------------------------
 lib/std/os.zig        | 13 -------------
 2 files changed, 44 deletions(-)

diff --git a/lib/std/c/freebsd.zig b/lib/std/c/freebsd.zig
index b44a72fafc..d845f87753 100644
--- a/lib/std/c/freebsd.zig
+++ b/lib/std/c/freebsd.zig
@@ -18,41 +18,10 @@ fn __BIT_COUNT(bits: []const c_long) c_long {
     return count;
 }
 
-fn __BIT_MASK(s: usize) c_long {
-    var x = s % CPU_SETSIZE;
-    return @as(c_long, @bitCast(@as(c_ulong, @intCast(1)) << @as(u6, @intCast(x))));
-}
-
 pub fn CPU_COUNT(set: cpuset_t) c_int {
     return @as(c_int, @intCast(__BIT_COUNT(set.__bits[0..])));
 }
 
-pub fn CPU_ZERO(set: *cpuset_t) void {
-    @memset((set.*).__bits[0..], 0);
-}
-
-pub fn CPU_SET(cpu: usize, set: *cpuset_t) void {
-    const x = cpu / @sizeOf(c_long);
-    if (x < @sizeOf(cpuset_t)) {
-        (set.*).__bits[x] |= __BIT_MASK(x);
-    }
-}
-
-pub fn CPU_ISSET(cpu: usize, set: cpuset_t) void {
-    const x = cpu / @sizeOf(c_long);
-    if (x < @sizeOf(cpuset_t)) {
-        return set.__bits[x] & __BIT_MASK(x);
-    }
-    return false;
-}
-
-pub fn CPU_CLR(cpu: usize, set: *cpuset_t) void {
-    const x = cpu / @sizeOf(c_long);
-    if (x < @sizeOf(cpuset_t)) {
-        (set.*).__bits[x] &= !__BIT_MASK(x);
-    }
-}
-
 pub const cpulevel_t = c_int;
 pub const cpuwhich_t = c_int;
 pub const id_t = i64;
diff --git a/lib/std/os.zig b/lib/std/os.zig
index 3cf22b77e7..dd9384bdf4 100644
--- a/lib/std/os.zig
+++ b/lib/std/os.zig
@@ -5537,19 +5537,6 @@ pub fn sched_setaffinity(pid: pid_t, cpus: []usize) SchedSetAffinityError!cpu_se
             .PERM => return error.PermissionDenied,
             else => |err| return unexpectedErrno(err),
         }
-    } else if (builtin.os.tag == .freebsd) {
-        freebsd.CPU_ZERO(&set);
-        for (cpus) |cpu| {
-            freebsd.CPU_SET(cpu, &set);
-        }
-        switch (errno(freebsd.cpuset_setaffinity(freebsd.CPU_LEVEL_WHICH, freebsd.CPU_WHICH_PID, pid, @sizeOf(cpu_set_t), &set))) {
-            .SUCCESS => return set,
-            .FAULT => unreachable,
-            .SRCH => unreachable,
-            .INVAL => return error.InvalidCpu,
-            .PERM => return error.PermissionDenied,
-            else => |err| return unexpectedErrno(err),
-        }
     } else {
         @compileError("unsupported platform");
     }