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libsysprof-analyze: track relative offset for frame

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This is handy so that we don't have to keep multiple objects around to
handle this request. Otherwise we'd need to keep references to the
document and that is a bit annoying.

This of course has a limit of about an hour (in tv_nsec), but that is
far longer than we can realistically record anyway.
This commit is contained in:
Christian Hergert
2023-06-12 15:41:29 -07:00
parent 0529cfb2f0
commit 63b42c2319
4 changed files with 34 additions and 7 deletions
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4
src/libsysprof-analyze/sysprof-document-frame-private.h
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@ -34,6 +34,7 @@ struct _SysprofDocumentFrame
guint32 frame_len : 16;
guint32 needs_swap : 1;
guint32 padding : 15;
guint32 time_offset;
};
struct _SysprofDocumentFrameClass
@ -44,7 +45,8 @@ struct _SysprofDocumentFrameClass
SysprofDocumentFrame *_sysprof_document_frame_new (GMappedFile *mapped,
const SysprofCaptureFrame *frame,
guint16 frame_len,
gboolean needs_swap);
gboolean needs_swap,
gint64 clock_at_start);
#define SYSPROF_DOCUMENT_FRAME_ENDPTR(obj) \
(&((const guint8 *)SYSPROF_DOCUMENT_FRAME(obj)->frame)[SYSPROF_DOCUMENT_FRAME(obj)->frame_len])

24
src/libsysprof-analyze/sysprof-document-frame.c
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@ -43,6 +43,7 @@ enum {
PROP_CPU,
PROP_PID,
PROP_TIME,
PROP_TIME_OFFSET,
N_PROPS
};
@ -83,6 +84,10 @@ sysprof_document_frame_get_property (GObject *object,
g_value_set_int64 (value, sysprof_document_frame_get_time (self));
break;
case PROP_TIME_OFFSET:
g_value_set_int64 (value, sysprof_document_frame_get_time_offset (self));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
@ -117,6 +122,13 @@ sysprof_document_frame_class_init (SysprofDocumentFrameClass *klass)
0,
(G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
properties[PROP_TIME_OFFSET] =
g_param_spec_int64 ("time-offset", NULL, NULL,
G_MININT64,
G_MAXINT64,
0,
(G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_properties (object_class, N_PROPS, properties);
}
@ -129,7 +141,8 @@ SysprofDocumentFrame *
_sysprof_document_frame_new (GMappedFile *mapped_file,
const SysprofCaptureFrame *frame,
guint16 frame_len,
gboolean needs_swap)
gboolean needs_swap,
gint64 begin_time)
{
SysprofDocumentFrame *self;
GType gtype;
@ -198,6 +211,7 @@ _sysprof_document_frame_new (GMappedFile *mapped_file,
self->frame = frame;
self->frame_len = frame_len;
self->needs_swap = !!needs_swap;
self->time_offset = CLAMP (sysprof_document_frame_get_time (self) - begin_time, 0, G_MAXINT64);
return self;
}
@ -225,3 +239,11 @@ sysprof_document_frame_get_time (SysprofDocumentFrame *self)
return SYSPROF_DOCUMENT_FRAME_INT64 (self, self->frame->time);
}
gint64
sysprof_document_frame_get_time_offset (SysprofDocumentFrame *self)
{
g_return_val_if_fail (SYSPROF_IS_DOCUMENT_FRAME (self), 0);
return self->time_offset;
}

10
src/libsysprof-analyze/sysprof-document-frame.h
View File

@ -35,13 +35,15 @@ typedef struct _SysprofDocumentFrame SysprofDocumentFrame;
typedef struct _SysprofDocumentFrameClass SysprofDocumentFrameClass;
SYSPROF_AVAILABLE_IN_ALL
GType sysprof_document_frame_get_type (void) G_GNUC_CONST;
GType sysprof_document_frame_get_type (void) G_GNUC_CONST;
SYSPROF_AVAILABLE_IN_ALL
int sysprof_document_frame_get_cpu (SysprofDocumentFrame *self);
int sysprof_document_frame_get_cpu (SysprofDocumentFrame *self);
SYSPROF_AVAILABLE_IN_ALL
int sysprof_document_frame_get_pid (SysprofDocumentFrame *self);
int sysprof_document_frame_get_pid (SysprofDocumentFrame *self);
SYSPROF_AVAILABLE_IN_ALL
gint64 sysprof_document_frame_get_time (SysprofDocumentFrame *self);
gint64 sysprof_document_frame_get_time (SysprofDocumentFrame *self);
SYSPROF_AVAILABLE_IN_ALL
gint64 sysprof_document_frame_get_time_offset (SysprofDocumentFrame *self);
G_DEFINE_AUTOPTR_CLEANUP_FUNC (SysprofDocumentFrame, g_object_unref)

3
src/libsysprof-analyze/sysprof-document.c
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@ -118,7 +118,8 @@ sysprof_document_get_item (GListModel *model,
ret = _sysprof_document_frame_new (self->mapped_file,
(gconstpointer)&self->base[ptr->offset],
ptr->length,
self->needs_swap);
self->needs_swap,
self->header.time);
/* Annotate processes with pre-calculated info */
if (SYSPROF_IS_DOCUMENT_PROCESS (ret))