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66 lines
2.2 KiB
66 lines
2.2 KiB
4 years ago
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#pragma once
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#include <assert.h>
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#include <stdint.h>
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#include "arch/getcycles.h"
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#include "local_completion_queue.h"
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#include "local_runqueue.h"
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#include "sandbox_state.h"
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#include "sandbox_functions.h"
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#include "sandbox_summarize_page_allocations.h"
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#include "panic.h"
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/**
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* Transitions a sandbox to the SANDBOX_ERROR state.
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* This can occur during initialization or execution
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* Unmaps linear memory, removes from the runqueue (if on it), and adds to the completion queue
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* Because the stack is still in use, freeing the stack is deferred until later
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*
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* TODO: Is the sandbox adding itself to the completion queue here? Is this a problem? Issue #94
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*
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* @param sandbox the sandbox erroring out
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* @param last_state the state the sandbox is transitioning from. This is expressed as a constant to
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* enable the compiler to perform constant propagation optimizations.
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*/
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static inline void
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sandbox_set_as_error(struct sandbox *sandbox, sandbox_state_t last_state)
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{
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assert(sandbox);
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uint64_t now = __getcycles();
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uint64_t duration_of_last_state = now - sandbox->last_state_change_timestamp;
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sandbox->state = SANDBOX_SET_AS_ERROR;
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switch (last_state) {
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case SANDBOX_SET_AS_INITIALIZED:
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/* Technically, this is a degenerate sandbox that we generate by hand */
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sandbox->initializing_duration += duration_of_last_state;
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break;
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case SANDBOX_RUNNING: {
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sandbox->running_duration += duration_of_last_state;
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local_runqueue_delete(sandbox);
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break;
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}
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default: {
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panic("Sandbox %lu | Illegal transition from %s to Error\n", sandbox->id,
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sandbox_state_stringify(last_state));
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}
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}
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uint64_t sandbox_id = sandbox->id;
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sandbox->state = SANDBOX_ERROR;
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sandbox_print_perf(sandbox);
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sandbox_summarize_page_allocations(sandbox);
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sandbox_free_linear_memory(sandbox);
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admissions_control_subtract(sandbox->admissions_estimate);
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/* Do not touch sandbox after adding to completion queue to avoid use-after-free bugs */
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local_completion_queue_add(sandbox);
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/* State Change Bookkeeping */
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sandbox_state_log_transition(sandbox_id, last_state, SANDBOX_ERROR);
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runtime_sandbox_total_increment(SANDBOX_ERROR);
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runtime_sandbox_total_decrement(last_state);
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}
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