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perf xyarray: Save max_x, max_y

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Save the original array dimensions in xyarrays, so that users can
retrieve them later. Add some inline functions to access these fields.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20170811232634.30465-1-andi@firstfloor.org
[ As noticed by Jiri, fix up namespacing: xy__method() -> xyarray__method() ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Andi Kleen 2017-08-11 16:26:16 -07:00 committed by Arnaldo Carvalho de Melo
parent ba63f76e22
commit d74be47673
2 changed files with 14 additions and 0 deletions
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2
tools/perf/util/xyarray.c
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@ -12,6 +12,8 @@ struct xyarray *xyarray__new(int xlen, int ylen, size_t entry_size)
xy->entry_size = entry_size;
xy->row_size = row_size;
xy->entries = xlen * ylen;
xy->max_x = xlen;
xy->max_y = ylen;
}
return xy;

12
tools/perf/util/xyarray.h
View File

@ -7,6 +7,8 @@ struct xyarray {
size_t row_size;
size_t entry_size;
size_t entries;
size_t max_x;
size_t max_y;
char contents[];
};
@ -19,4 +21,14 @@ static inline void *xyarray__entry(struct xyarray *xy, int x, int y)
return &xy->contents[x * xy->row_size + y * xy->entry_size];
}
static inline int xyarray__max_y(struct xyarray *xy)
{
return xy->max_x;
}
static inline int xyarray__max_x(struct xyarray *xy)
{
return xy->max_y;
}
#endif /* _PERF_XYARRAY_H_ */