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/* <code/eventcom.h> -- Event Logging Common Definitions
*
* Copyright (c) 2001-2020 Ravenbrook Limited. See end of file for license.
* $Id$
*
* .sources: mps.design.telemetry
*/
#ifndef eventcom_h
#define eventcom_h
#include <limits.h>
#include "mpmtypes.h" /* for Word */
#include "eventdef.h"
#include "clock.h"
/* Event Kinds --- see <design/telemetry>
*
* All events are classified as being of one event type.
* They are small enough to be able to be used as members of a bit set.
*/
#define EventKindENUM(ENUM, X) \
ENUM(X, Arena, "Per space or arena") \
ENUM(X, Pool, "Per pool") \
ENUM(X, Trace, "Per trace or scan") \
ENUM(X, Seg, "Per seg") \
ENUM(X, Ref, "Per ref or fix") \
ENUM(X, Object, "Per alloc or object") \
ENUM(X, User, "User-invoked")
#define ENUM_DECLARE(name) \
enum name##Enum { \
name##ENUM(ENUM_DECLARE_ROW, name) \
name##LIMIT \
};
#define ENUM_DECLARE_ROW(enumName, rowName, rowDoc) \
enumName##rowName,
ENUM_DECLARE(EventKind)
/* Event type definitions
*
* Various constants for each event type to describe them, so that they
* can easily be looked up from macros by name.
*/
/* Note that enum values can be up to fifteen bits long portably. */
#define EVENT_ENUM(X, name, code, used, kind) \
Event##name##Code = code, \
Event##name##Used = used, \
Event##name##Kind = EventKind##kind,
enum EventDefinitionsEnum {
EVENT_LIST(EVENT_ENUM, X)
/* suppress comma-at-end-of-enum warning */
EventEnumWarningSuppressor = USHRT_MAX
};
/* Event*Struct -- Event Structures
*
* Declare the structures that are used to encode events in the internal event
* buffers and on the binary telemetry output stream.
*/
/* Types for common event fields */
typedef unsigned short EventCode;
typedef unsigned EventKind;
typedef unsigned short EventSize;
#define EventSizeMAX USHRT_MAX
/* Common prefix for all event structures. The size field allows an event
reader to skip over events whose codes it does not recognise. */
#define EVENT_ANY_FIELDS(X) \
X(EventCode, code, "encoding of the event type") \
X(EventSize, size, "allows reader to skip events of unknown code") \
X(EventClock, clock, "when the event occurred")
#define EVENT_ANY_STRUCT_FIELD(TYPE, NAME, DOC) TYPE NAME;
typedef struct EventAnyStruct {
EVENT_ANY_FIELDS(EVENT_ANY_STRUCT_FIELD)
} EventAnyStruct;
/* Event field types, for indexing by macro on the event parameter sort */
typedef void *EventFP; /* pointer to C object */
typedef Addr EventFA; /* address on the heap */
typedef Word EventFW; /* word */
typedef unsigned EventFU; /* unsigned integer */
typedef char EventFS[EventStringLengthMAX + sizeof('\0')]; /* string */
typedef double EventFD; /* double */
typedef unsigned char EventFB; /* Boolean */
/* Event packing bitfield specifiers */
#define EventFP_BITFIELD
#define EventFA_BITFIELD
#define EventFW_BITFIELD
#define EventFU_BITFIELD
#define EventFS_BITFIELD
#define EventFD_BITFIELD
#define EventFB_BITFIELD
#define EVENT_STRUCT_FIELD(X, index, sort, ident, doc) \
EventF##sort f##index EventF##sort##_BITFIELD;
#define EVENT_STRUCT(X, name, _code, used, kind) \
typedef struct Event##name##Struct { \
EVENT_ANY_FIELDS(EVENT_ANY_STRUCT_FIELD) \
EVENT_##name##_PARAMS(EVENT_STRUCT_FIELD, X) \
} Event##name##Struct;
EVENT_LIST(EVENT_STRUCT, X)
/* Maximum alignment requirement of any event type. */
#define EVENT_ALIGN (sizeof(EventFP))
/* Event -- event union type
*
* Event is the type of a pointer to EventUnion, which is a union of all
* event structures. This can be used as the type of any event, decoded
* by examining event->any.code.
*/
#define EVENT_UNION_MEMBER(X, name, code, used, kind) \
Event##name##Struct name;
typedef union EventUnion {
EventAnyStruct any;
EVENT_LIST(EVENT_UNION_MEMBER, X)
} EventUnion, *Event;
#endif /* eventcom_h */
/* C. COPYRIGHT AND LICENSE
*
* Copyright (C) 2001-2020 Ravenbrook Limited <https://www.ravenbrook.com/>.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
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