7615936ebf
This patch introduces the functions for enabling the record/replay and for freeing the resources when simulator closes. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru> Message-Id: <20150917162507.8676.90232.stgit@PASHA-ISP.def.inno> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
128 lines
3.7 KiB
C
128 lines
3.7 KiB
C
#ifndef REPLAY_INTERNAL_H
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#define REPLAY_INTERNAL_H
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/*
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* replay-internal.h
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*
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* Copyright (c) 2010-2015 Institute for System Programming
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* of the Russian Academy of Sciences.
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#include <stdio.h>
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enum ReplayEvents {
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/* for instruction event */
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EVENT_INSTRUCTION,
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/* for software interrupt */
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EVENT_INTERRUPT,
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/* for emulated exceptions */
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EVENT_EXCEPTION,
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/* for async events */
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EVENT_ASYNC,
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/* for shutdown request */
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EVENT_SHUTDOWN,
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/* for clock read/writes */
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/* some of greater codes are reserved for clocks */
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EVENT_CLOCK,
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EVENT_CLOCK_LAST = EVENT_CLOCK + REPLAY_CLOCK_COUNT - 1,
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/* for checkpoint event */
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/* some of greater codes are reserved for checkpoints */
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EVENT_CHECKPOINT,
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EVENT_CHECKPOINT_LAST = EVENT_CHECKPOINT + CHECKPOINT_COUNT - 1,
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/* end of log event */
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EVENT_END,
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EVENT_COUNT
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};
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/* Asynchronous events IDs */
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enum ReplayAsyncEventKind {
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REPLAY_ASYNC_EVENT_BH,
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REPLAY_ASYNC_COUNT
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};
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typedef enum ReplayAsyncEventKind ReplayAsyncEventKind;
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typedef struct ReplayState {
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/*! Cached clock values. */
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int64_t cached_clock[REPLAY_CLOCK_COUNT];
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/*! Current step - number of processed instructions and timer events. */
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uint64_t current_step;
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/*! Number of instructions to be executed before other events happen. */
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int instructions_count;
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} ReplayState;
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extern ReplayState replay_state;
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extern unsigned int replay_data_kind;
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/* File for replay writing */
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extern FILE *replay_file;
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void replay_put_byte(uint8_t byte);
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void replay_put_event(uint8_t event);
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void replay_put_word(uint16_t word);
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void replay_put_dword(uint32_t dword);
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void replay_put_qword(int64_t qword);
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void replay_put_array(const uint8_t *buf, size_t size);
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uint8_t replay_get_byte(void);
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uint16_t replay_get_word(void);
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uint32_t replay_get_dword(void);
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int64_t replay_get_qword(void);
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void replay_get_array(uint8_t *buf, size_t *size);
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void replay_get_array_alloc(uint8_t **buf, size_t *size);
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/* Mutex functions for protecting replay log file */
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void replay_mutex_init(void);
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void replay_mutex_destroy(void);
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void replay_mutex_lock(void);
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void replay_mutex_unlock(void);
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/*! Checks error status of the file. */
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void replay_check_error(void);
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/*! Finishes processing of the replayed event and fetches
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the next event from the log. */
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void replay_finish_event(void);
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/*! Reads data type from the file and stores it in the
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replay_data_kind variable. */
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void replay_fetch_data_kind(void);
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/*! Saves queued events (like instructions and sound). */
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void replay_save_instructions(void);
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/*! Skips async events until some sync event will be found.
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\return true, if event was found */
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bool replay_next_event_is(int event);
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/*! Reads next clock value from the file.
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If clock kind read from the file is different from the parameter,
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the value is not used. */
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void replay_read_next_clock(unsigned int kind);
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/* Asynchronous events queue */
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/*! Initializes events' processing internals */
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void replay_init_events(void);
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/*! Clears internal data structures for events handling */
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void replay_finish_events(void);
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/*! Enables storing events in the queue */
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void replay_enable_events(void);
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/*! Flushes events queue */
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void replay_flush_events(void);
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/*! Clears events list before loading new VM state */
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void replay_clear_events(void);
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/*! Returns true if there are any unsaved events in the queue */
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bool replay_has_events(void);
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/*! Saves events from queue into the file */
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void replay_save_events(int checkpoint);
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/*! Read events from the file into the input queue */
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void replay_read_events(int checkpoint);
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#endif
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