static errval_t reclaim_memory(genpaddr_t base, uint8_t bits)
{
/* XXX: mem client is only defined for the bsp core.
* For app cores, just return */
if (get_mem_client() == NULL) {
return SYS_ERR_OK;
}
// Fabricate new RAM cap and hand back to mem_serv
struct capability c = {
.type = ObjType_RAM,
.u.ram = {
.base = base,
.bits = bits,
}
};
struct capref ramcap;
errval_t err = slot_alloc(&ramcap);
if(err_is_fail(err)) {
return err;
}
err = monitor_cap_create(ramcap, &c, my_core_id);
if(err_is_fail(err)) {
return err;
}
struct ram_alloc_state *ram_alloc_state = get_ram_alloc_state();
errval_t result;
thread_mutex_lock(&ram_alloc_state->ram_alloc_lock);
struct mem_rpc_client *b = get_mem_client();
// XXX: This should not be an RPC! It could stall the monitor, but
// we trust mem_serv for the moment.
err = b->vtbl.free_monitor(b, ramcap, base, bits, &result);
thread_mutex_unlock(&ram_alloc_state->ram_alloc_lock);
if(err_is_fail(err)) {
return err;
}
if(err_is_fail(result)) {
return result;
}
// XXX: this shouldn't be necessary as free_monitor uses give_away_cap
err = cap_destroy(ramcap);
if (err_no(err) == SYS_ERR_CAP_NOT_FOUND) {
err = SYS_ERR_OK;
}
if (err_is_fail(err)) {
DEBUG_ERR(err, "destroying reclaimed cap");
}
return err;
}
static int freecmd(int argc, char *argv[])
{
struct mem_rpc_client *mc = get_mem_client();
assert(mc != NULL);
errval_t err;
genpaddr_t available, total;
err = ram_available(&available, &total);
if(err_is_fail(err)) {
DEBUG_ERR(err, "available");
return EXIT_FAILURE;
}
printf("Free memory: %" PRIuGENPADDR " bytes\n", available);
printf("Total memory: %" PRIuGENPADDR " bytes\n", total);
return EXIT_SUCCESS;
}
static int freemem(void)
{
struct mem_rpc_client *mc = get_mem_client();
assert(mc != NULL);
errval_t err;
genpaddr_t available, total;
err = ram_available(&available, &total);
if(err_is_fail(err)) {
DEBUG_ERR(err, "available");
return EXIT_FAILURE;
}
printf("Free memory: %"PRIu32" MB (%" PRIu32 " bytes)\n",((uint32_t)available)/1024/1024, (uint32_t)available);
printf("Total memory: %"PRIu32" MB (%" PRIu32 " bytes)\n",((uint32_t)total)/1024/1024, (uint32_t)total);
return EXIT_SUCCESS;
}
