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libsysprof-analyze: include time as fractions for marks

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This allows more easily calculating the horizontal position of marks and
their duration from charts.
This commit is contained in:
Christian Hergert
2023-06-15 16:14:32 -07:00
parent 7568c31fcf
commit 6dcb5e5fdd
5 changed files with 73 additions and 22 deletions
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15
src/libsysprof-analyze/sysprof-document-frame-private.h
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@ -42,11 +42,24 @@ struct _SysprofDocumentFrameClass
GObjectClass parent_class;
};
struct _SysprofDocumentMark
{
SysprofDocumentFrame parent_instance;
double begin_fraction;
double end_fraction;
};
struct _SysprofDocumentMarkClass
{
SysprofDocumentFrameClass parent_class;
};
SysprofDocumentFrame *_sysprof_document_frame_new (GMappedFile *mapped,
const SysprofCaptureFrame *frame,
guint16 frame_len,
gboolean needs_swap,
gint64 clock_at_start);
gint64 begin_time,
gint64 end_time);
#define SYSPROF_DOCUMENT_FRAME_ENDPTR(obj) \
(&((const guint8 *)SYSPROF_DOCUMENT_FRAME(obj)->frame)[SYSPROF_DOCUMENT_FRAME(obj)->frame_len])

21
src/libsysprof-analyze/sysprof-document-frame.c
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@ -142,9 +142,11 @@ _sysprof_document_frame_new (GMappedFile *mapped_file,
const SysprofCaptureFrame *frame,
guint16 frame_len,
gboolean needs_swap,
gint64 begin_time)
gint64 begin_time,
gint64 end_time)
{
SysprofDocumentFrame *self;
gint64 time_offset;
GType gtype;
switch (frame->type)
@ -206,12 +208,27 @@ _sysprof_document_frame_new (GMappedFile *mapped_file,
break;
}
self = g_object_new (gtype, NULL);
self->mapped_file = g_mapped_file_ref (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);
time_offset = CLAMP (sysprof_document_frame_get_time (self) - begin_time, 0, G_MAXINT64);
/* loose precision here after about 71 minutes */
self->time_offset = (guint)time_offset;
if (frame->type == SYSPROF_CAPTURE_FRAME_MARK)
{
SysprofDocumentMark *mark = (SysprofDocumentMark *)self;
gint64 capture_duration = end_time - begin_time;
gint64 duration = sysprof_document_mark_get_duration (mark);
mark->begin_fraction = time_offset / (double)capture_duration;
mark->end_fraction = (time_offset + duration) / (double)capture_duration;
}
return self;
}

42
src/libsysprof-analyze/sysprof-document-mark.c
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@ -23,16 +23,6 @@
#include "sysprof-document-frame-private.h"
#include "sysprof-document-mark.h"
struct _SysprofDocumentMark
{
SysprofDocumentFrame parent_instance;
};
struct _SysprofDocumentMarkClass
{
SysprofDocumentFrameClass parent_class;
};
enum {
PROP_0,
PROP_DURATION,
@ -48,9 +38,9 @@ static GParamSpec *properties [N_PROPS];
static void
sysprof_document_mark_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
SysprofDocumentMark *self = SYSPROF_DOCUMENT_MARK (object);
@ -159,3 +149,29 @@ sysprof_document_mark_get_message (SysprofDocumentMark *self)
return SYSPROF_DOCUMENT_FRAME_CSTRING (self, mark->message);
}
/**
* sysprof_document_mark_get_time_fraction:
* @self: a #SysprofDocumentMark
* @begin_fraction: (out) (nullable): a location for the begin
* time as a fraction
* @end_fraction: (out) (nullable): a location for the end
* time as a fraction
*
* Gets the begin/end time of the mark as a fraction between 0 and 1.
*
* 0 is the beginning of the capture, 1 is the end of the capture.
*/
void
sysprof_document_mark_get_time_fraction (SysprofDocumentMark *self,
double *begin_fraction,
double *end_fraction)
{
g_return_if_fail (SYSPROF_IS_DOCUMENT_MARK (self));
if (begin_fraction)
*begin_fraction = self->begin_fraction;
if (end_fraction)
*end_fraction = self->end_fraction;
}

14
src/libsysprof-analyze/sysprof-document-mark.h
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@ -33,15 +33,19 @@ typedef struct _SysprofDocumentMark SysprofDocumentMark;
typedef struct _SysprofDocumentMarkClass SysprofDocumentMarkClass;
SYSPROF_AVAILABLE_IN_ALL
GType sysprof_document_mark_get_type (void) G_GNUC_CONST;
GType sysprof_document_mark_get_type (void) G_GNUC_CONST;
SYSPROF_AVAILABLE_IN_ALL
gint64 sysprof_document_mark_get_duration (SysprofDocumentMark *self);
gint64 sysprof_document_mark_get_duration (SysprofDocumentMark *self);
SYSPROF_AVAILABLE_IN_ALL
const char *sysprof_document_mark_get_group (SysprofDocumentMark *self);
const char *sysprof_document_mark_get_group (SysprofDocumentMark *self);
SYSPROF_AVAILABLE_IN_ALL
const char *sysprof_document_mark_get_name (SysprofDocumentMark *self);
const char *sysprof_document_mark_get_name (SysprofDocumentMark *self);
SYSPROF_AVAILABLE_IN_ALL
const char *sysprof_document_mark_get_message (SysprofDocumentMark *self);
const char *sysprof_document_mark_get_message (SysprofDocumentMark *self);
SYSPROF_AVAILABLE_IN_ALL
void sysprof_document_mark_get_time_fraction (SysprofDocumentMark *self,
double *begin_fraction,
double *end_fraction);
G_DEFINE_AUTOPTR_CLEANUP_FUNC (SysprofDocumentMark, g_object_unref)

3
src/libsysprof-analyze/sysprof-document.c
View File

@ -125,7 +125,8 @@ sysprof_document_get_item (GListModel *model,
(gconstpointer)&self->base[ptr->offset],
ptr->length,
self->needs_swap,
self->header.time);
self->header.time,
self->header.end_time);
/* Annotate processes with pre-calculated info */
if (SYSPROF_IS_DOCUMENT_PROCESS (ret))