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/* If the new process paused because it was swapped
* out, set the stack level to the last call to
* savu(u_ssav). This means that the return which is
* executed immediately after the call to aretu
* actually returns from the last routine which did
* the savu.
*
* You are not expected to understand this.
*/
if(rp->p_flag&SSWAP) {
rp->p_flag =& ~SSWAP;
aretu(u.u_ssav);
}
Parte de código del cambio de contexto del kernel de Unix V6
Publicado por Caerolus el 17 de Noviembre de 2006
Categoría: Frases y Citas
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