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#ifndef REPLAY_H
#define REPLAY_H
/*
* replay.h
*
* Copyright (c) 2010-2015 Institute for System Programming
* of the Russian Academy of Sciences.
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
*/
#include <stdbool.h>
#include <stdint.h>
#include "qapi-types.h"
/* replay clock kinds */
enum ReplayClockKind {
/* host_clock */
REPLAY_CLOCK_HOST,
/* virtual_rt_clock */
REPLAY_CLOCK_VIRTUAL_RT,
REPLAY_CLOCK_COUNT
};
typedef enum ReplayClockKind ReplayClockKind;
extern ReplayMode replay_mode;
/* Processing the instructions */
/*! Returns number of executed instructions. */
uint64_t replay_get_current_step(void);
/*! Returns number of instructions to execute in replay mode. */
int replay_get_instructions(void);
/*! Updates instructions counter in replay mode. */
void replay_account_executed_instructions(void);
/* Interrupts and exceptions */
/*! Called by exception handler to write or read
exception processing events. */
bool replay_exception(void);
/*! Used to determine that exception is pending.
Does not proceed to the next event in the log. */
bool replay_has_exception(void);
/*! Called by interrupt handlers to write or read
interrupt processing events.
\return true if interrupt should be processed */
bool replay_interrupt(void);
/*! Tries to read interrupt event from the file.
Returns true, when interrupt request is pending */
bool replay_has_interrupt(void);
/* Processing clocks and other time sources */
/*! Save the specified clock */
int64_t replay_save_clock(ReplayClockKind kind, int64_t clock);
/*! Read the specified clock from the log or return cached data */
int64_t replay_read_clock(ReplayClockKind kind);
/*! Saves or reads the clock depending on the current replay mode. */
#define REPLAY_CLOCK(clock, value) \
(replay_mode == REPLAY_MODE_PLAY ? replay_read_clock((clock)) \
: replay_mode == REPLAY_MODE_RECORD \
? replay_save_clock((clock), (value)) \
: (value))
/* Asynchronous events queue */
/*! Disables storing events in the queue */
void replay_disable_events(void);
/*! Returns true when saving events is enabled */
bool replay_events_enabled(void);
#endif
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