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[coretext] Rewind scratch-allocated arrays when not needed anymore

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This commit is contained in:
Behdad Esfahbod 2014-08-12 14:25:11 -04:00
parent 8fd4d70b14
commit c3e924fb9e
1 changed files with 16 additions and 0 deletions
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16
src/hb-coretext.cc
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@ -874,8 +874,19 @@ retry:
* have it that this changed in OS X 10.10 Yosemite, and NULL is returned
* frequently. At any rate, we can test that codepath by setting USE_PTR
* to false. */
#define USE_PTR true
#define SCRATCH_SAVE() \
unsigned int scratch_size_saved = scratch_size; \
hb_buffer_t::scratch_buffer_t *scratch_saved = scratch
#define SCRATCH_RESTORE() \
scratch_size = scratch_size_saved; \
scratch = scratch_saved;
{
SCRATCH_SAVE();
const CGGlyph* glyphs = USE_PTR ? CTRunGetGlyphsPtr (run) : NULL;
if (!glyphs) {
ALLOCATE_ARRAY (CGGlyph, glyph_buf, num_glyphs, goto resize_and_retry);
@ -895,8 +906,10 @@ retry:
info->cluster = log_clusters[string_indices[j]];
info++;
}
SCRATCH_RESTORE();
}
{
SCRATCH_SAVE();
const CGPoint* positions = USE_PTR ? CTRunGetPositionsPtr (run) : NULL;
if (!positions) {
ALLOCATE_ARRAY (CGPoint, position_buf, num_glyphs, goto resize_and_retry);
@ -929,7 +942,10 @@ retry:
info++;
}
}
SCRATCH_RESTORE();
}
#undef SCRATCH_RESTORE
#undef SCRATCH_SAVE
#undef USE_PTR
#undef ALLOCATE_ARRAY