zig

commit 3fafbd2e35b05c98971b8d81514d2f92670c7b89 (tree)
parent 6a37df00ece82f6c9c73b07a77c22c918fc3257c
Author: Alex Rønne Petersen <alex@alexrp.com>
Date:   Tue,  5 May 2026 17:20:14 +0200

Merge pull request 'std: fix getCpuCount() for emscripten' (#35206) from jeffkdev/zig:fix-issue-31871 into master

Reviewed-on: https://codeberg.org/ziglang/zig/pulls/35206
Reviewed-by: Alex Rønne Petersen <alex@alexrp.com>

Diffstat:
M
lib/std/Thread.zig
 | 
3
+++
M
lib/std/os/emscripten.zig
 | 
1
+

2 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/lib/std/Thread.zig b/lib/std/Thread.zig
@@ -695,6 +695,9 @@ const PosixThreadImpl = struct {
             .linux => {
                 return LinuxThreadImpl.getCpuCount();
             },
+            .emscripten => {
+                return @as(usize, @intCast(std.os.emscripten.emscripten_num_logical_cores()));
+            },
             .openbsd => {
                 var count: c_int = undefined;
                 var count_size: usize = @sizeOf(c_int);
diff --git a/lib/std/os/emscripten.zig b/lib/std/os/emscripten.zig
@@ -882,6 +882,7 @@ pub extern "c" fn emscripten_hide_mouse() void;
 pub extern "c" fn emscripten_set_canvas_size(width: c_int, height: c_int) void;
 pub extern "c" fn emscripten_get_canvas_size(width: *c_int, height: *c_int, isFullscreen: *c_int) void;
 pub extern "c" fn emscripten_get_now() f64;
+pub extern "c" fn emscripten_num_logical_cores() c_int;
 pub extern "c" fn emscripten_random() f32;
 pub const em_idb_onload_func = ?*const fn (?*anyopaque, ?*anyopaque, c_int) callconv(.c) void;
 pub extern "c" fn emscripten_idb_async_load(db_name: [*:0]const u8, file_id: [*:0]const u8, arg: ?*anyopaque, onload: em_idb_onload_func, onerror: em_arg_callback_func) void;