Function msync [src]

Prototype

pub fn msync(memory: []align(page_size_min) u8, flags: i32) MSyncError!void

Parameters

memory: []align(page_size_min) u8flags: i32

Possible Errors

PermissionDenied

Unexpected UnexpectedError

The Operating System returned an undocumented error code.

This error is in theory not possible, but it would be better to handle this error than to invoke undefined behavior.

When this error code is observed, it usually means the Zig Standard Library needs a small patch to add the error code to the error set for the respective function.

UnmappedMemory

Source

  pub fn msync(memory: []align(page_size_min) u8, flags: i32) MSyncError!void {
    switch (errno(system.msync(memory.ptr, memory.len, flags))) {
        .SUCCESS => return,
        .PERM => return error.PermissionDenied,
        .NOMEM => return error.UnmappedMemory, // Unsuccessful, provided pointer does not point mapped memory
        .INVAL => unreachable, // Invalid parameters.
        else => unreachable,
    }
}  