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/*

 * Interface for configuring and controlling the state of tracing events.

 *

 * Copyright (C) 2011 Lluís Vilanova <vilanova@ac.upc.edu>

 *

 * This work is licensed under the terms of the GNU GPL, version 2.  See

 * the COPYING file in the top-level directory.

 */

#ifndef TRACE_CONTROL_H

#define TRACE_CONTROL_H

#include "qemu-common.h"

/** Print the state of all events. */

void trace_print_events(FILE *stream, fprintf_function stream_printf);

/** Set the state of an event.

 *

 * @return Whether the state changed.

 */

bool trace_event_set_state(const char *name, bool state);

/** Initialize the tracing backend.

 *

 * @events Name of file with events to be enabled at startup; may be NULL.

 *         Corresponds to commandline option "-trace events=...".

 * @file   Name of trace output file; may be NULL.

 *         Corresponds to commandline option "-trace file=...".

 * @return Whether the backend could be successfully initialized.

 */

bool trace_backend_init(const char *events, const char *file);

/** Generic function to initialize the state of events.

 *

 * @fname Name of file with events to enable; may be NULL.

 */

void trace_backend_init_events(const char *fname);

#endif  /* TRACE_CONTROL_H */