On 29 March 2015 at 01:13, Hans Petter Selasky <h...@selasky.org> wrote:
> On 03/28/15 20:16, Gleb Smirnoff wrote:
>>
>> +uint16_t
>> +ip_newid(void)
>> +{
>> +
>> + counter_u64_add(V_ip_id, 1);
>> + return (htons((*(uint64_t *)zpcpu_get(V_ip_id)) & 0xffff));
>> +}
>
>
> Technically you would need to enter a critical section here, so that the
> current process doesn't get swapped to a different CPU between the counter
> add and the zpcpu_get.
+10000 here.
You can get preempted and shifted to another CPU at almost any point
in time you're not explicitly asking not to be. It's.. frustrating.
-adrian
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