Andrew Kelley 63f4778827 std: add Linux perf syscall bits ... Example usage: ```zig const std = @import("std"); const PERF = std.os.linux.PERF; const assert = std.debug.assert; test "perf" { var attr: std.os.linux.perf_event_attr = .{ .type = PERF.TYPE.HARDWARE, .config = @enumToInt(PERF.COUNT.HW.INSTRUCTIONS), .flags = .{ .disabled = true, .exclude_kernel = true, .exclude_hv = true, }, }; const fd = try std.os.perf_event_open(&attr, 0, -1, -1, PERF.FLAG.FD_CLOEXEC); defer std.os.close(fd); _ = std.os.linux.ioctl(fd, PERF.EVENT_IOC.RESET, 0); _ = std.os.linux.ioctl(fd, PERF.EVENT_IOC.ENABLE, 0); long(); _ = std.os.linux.ioctl(fd, PERF.EVENT_IOC.DISABLE, 0); var result: usize = 0; assert((try std.os.read(fd, std.mem.asBytes(&result))) == @sizeOf(usize)); std.debug.print("instruction count: {d}\n", .{result}); } fn long() void { var i: usize = 0; while (i < 100000) : (i += 1) {} } ```		2021-11-01 14:45:05 -07:00
..
linux	std: Fix edge case in TLS tp calculation	2021-10-23 22:48:25 -04:00
uefi	fix(uefi MemoryDescriptor): padding after memory type	2021-10-25 16:43:23 -04:00
windows	migrate from std.Target.current to @import("builtin").target	2021-10-04 23:48:55 -07:00
linux.zig	std: add Linux perf syscall bits	2021-11-01 14:45:05 -07:00
test.zig	Initial bringup of the Solaris/Illumos port	2021-09-24 14:06:16 -04:00
uefi.zig	remove redundant license headers from zig standard library	2021-08-24 12:25:09 -07:00
wasi.zig	std.os fixes to get the test suite passing again	2021-09-01 17:54:07 -07:00
windows.zig	std.os.windows: Fix typo (#9951)	2021-10-15 14:44:05 +02:00