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81 lines
2.0 KiB
81 lines
2.0 KiB
4 years ago
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#pragma once
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#include <stdatomic.h>
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#include "likely.h"
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#include "panic.h"
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typedef enum
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{
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SANDBOX_UNINITIALIZED = 0, /* Assumption: mmap zeros out structure */
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SANDBOX_ALLOCATED,
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SANDBOX_SET_AS_INITIALIZED,
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SANDBOX_INITIALIZED,
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SANDBOX_SET_AS_RUNNABLE,
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SANDBOX_RUNNABLE,
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SANDBOX_SET_AS_RUNNING,
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SANDBOX_RUNNING,
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SANDBOX_SET_AS_PREEMPTED,
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SANDBOX_PREEMPTED,
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SANDBOX_SET_AS_BLOCKED,
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SANDBOX_BLOCKED,
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SANDBOX_SET_AS_RETURNED,
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SANDBOX_RETURNED,
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SANDBOX_SET_AS_COMPLETE,
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SANDBOX_COMPLETE,
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SANDBOX_SET_AS_ERROR,
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SANDBOX_ERROR,
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SANDBOX_STATE_COUNT
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} sandbox_state_t;
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extern const bool sandbox_state_is_terminal[SANDBOX_STATE_COUNT];
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extern const char *sandbox_state_labels[SANDBOX_STATE_COUNT];
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static inline const char *
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sandbox_state_stringify(sandbox_state_t state)
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{
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if (unlikely(state >= SANDBOX_STATE_COUNT)) panic("%d is an unrecognized sandbox state\n", state);
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return sandbox_state_labels[state];
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}
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static inline void
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sandbox_state_log_transition(uint64_t sandbox_id, sandbox_state_t last_state, sandbox_state_t current_state)
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{
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#ifdef LOG_STATE_CHANGES
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debuglog("Sandbox %lu | %s => %s\n", sandbox_id, sandbox_state_stringify(last_state),
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sandbox_state_stringify(current_state));
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#endif
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}
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#ifdef LOG_SANDBOX_COUNT
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extern _Atomic uint32_t sandbox_state_count[SANDBOX_STATE_COUNT];
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#endif
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static inline void
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sandbox_count_initialize()
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{
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#ifdef LOG_SANDBOX_COUNT
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for (int i = 0; i < SANDBOX_STATE_COUNT; i++) atomic_init(&sandbox_state_count[i], 0);
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#endif
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}
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static inline void
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runtime_sandbox_total_increment(sandbox_state_t state)
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{
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#ifdef LOG_SANDBOX_COUNT
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if (!sandbox_state_is_terminal[state]) panic("Unexpectedly logging intermediate transition state");
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atomic_fetch_add(&sandbox_state_count[state], 1);
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#endif
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}
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static inline void
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runtime_sandbox_total_decrement(sandbox_state_t state)
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{
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#ifdef LOG_SANDBOX_COUNT
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if (atomic_load(&sandbox_state_count[state]) == 0) panic("Underflow of %s\n", sandbox_state_stringify(state));
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atomic_fetch_sub(&sandbox_state_count[state], 1);
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#endif
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}
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