You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
sledge-1/runtime/include/sandbox_set_as_blocked.h

50 lines
1.5 KiB

#pragma once
#include <assert.h>
#include <stdint.h>
#include "arch/getcycles.h"
#include "local_runqueue.h"
#include "sandbox_types.h"
#include "sandbox_state.h"
/**
* Transitions a sandbox to the SANDBOX_BLOCKED state.
* This occurs when a sandbox is executing and it makes a blocking API call of some kind.
* Automatically removes the sandbox from the runqueue
* @param sandbox the blocking sandbox
* @param last_state the state the sandbox is transitioning from. This is expressed as a constant to
* enable the compiler to perform constant propagation optimizations.
*/
static inline void
sandbox_set_as_blocked(struct sandbox *sandbox, sandbox_state_t last_state)
{
assert(sandbox);
uint64_t now = __getcycles();
uint64_t duration_of_last_state = now - sandbox->last_state_change_timestamp;
sandbox->state = SANDBOX_SET_AS_BLOCKED;
switch (last_state) {
case SANDBOX_RUNNING: {
sandbox->last_update_timestamp = now;
sandbox->running_duration += duration_of_last_state;
local_runqueue_delete(sandbox);
break;
}
default: {
panic("Sandbox %lu | Illegal transition from %s to Blocked\n", sandbox->id,
sandbox_state_stringify(last_state));
}
}
sandbox->last_state_change_timestamp = now;
sandbox->state = SANDBOX_BLOCKED;
/* State Change Bookkeeping */
sandbox_state_log_transition(sandbox->id, last_state, SANDBOX_BLOCKED);
runtime_sandbox_total_increment(SANDBOX_BLOCKED);
runtime_sandbox_total_decrement(last_state);
}