[repacker] add a couple more complex isolation tests.
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@ -865,7 +865,8 @@ static bool _process_overflows (const hb_vector_t<graph_t::overflow_record_t>& o
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inline void
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inline void
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hb_resolve_overflows (const hb_vector_t<hb_serialize_context_t::object_t *>& packed,
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hb_resolve_overflows (const hb_vector_t<hb_serialize_context_t::object_t *>& packed,
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hb_tag_t table_tag,
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hb_tag_t table_tag,
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hb_serialize_context_t* c) {
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hb_serialize_context_t* c,
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unsigned max_rounds = 10) {
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// Kahn sort is ~twice as fast as shortest distance sort and works for many fonts
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// Kahn sort is ~twice as fast as shortest distance sort and works for many fonts
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// so try it first to save time.
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// so try it first to save time.
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graph_t sorted_graph (packed);
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graph_t sorted_graph (packed);
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@ -894,7 +895,7 @@ hb_resolve_overflows (const hb_vector_t<hb_serialize_context_t::object_t *>& pac
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// TODO(garretrieger): select a good limit for max rounds.
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// TODO(garretrieger): select a good limit for max rounds.
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while (!sorted_graph.in_error ()
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while (!sorted_graph.in_error ()
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&& sorted_graph.will_overflow (&overflows)
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&& sorted_graph.will_overflow (&overflows)
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&& round++ < 10) {
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&& round++ < max_rounds) {
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DEBUG_MSG (SUBSET_REPACK, nullptr, "=== Overflow resolution round %d ===", round);
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DEBUG_MSG (SUBSET_REPACK, nullptr, "=== Overflow resolution round %d ===", round);
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sorted_graph.print_overflows (overflows);
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sorted_graph.print_overflows (overflows);
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@ -143,6 +143,70 @@ populate_serializer_with_isolation_overflow (hb_serialize_context_t* c)
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c->end_serialize();
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c->end_serialize();
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}
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}
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static void
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populate_serializer_with_isolation_overflow_complex (hb_serialize_context_t* c)
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{
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std::string large_string(70000, 'a');
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c->start_serialize<char> ();
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unsigned obj_f = add_object ("f", 1, c);
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start_object ("e", 1, c);
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add_offset (obj_f, c);
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unsigned obj_e = c->pop_pack ();
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start_object ("c", 1, c);
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add_offset (obj_e, c);
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unsigned obj_c = c->pop_pack ();
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start_object ("d", 1, c);
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add_offset (obj_e, c);
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unsigned obj_d = c->pop_pack ();
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start_object (large_string.c_str(), 60000, c);
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add_offset (obj_c, c);
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add_offset (obj_d, c);
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unsigned obj_b = c->pop_pack ();
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start_object (large_string.c_str(), 10000, c);
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add_offset (obj_d, c);
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unsigned obj_g = c->pop_pack ();
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start_object ("a", 1, c);
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add_wide_offset (obj_b, c);
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add_offset (obj_g, c);
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c->pop_pack ();
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c->end_serialize();
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}
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static void
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populate_serializer_with_isolation_overflow_spaces (hb_serialize_context_t* c)
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{
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std::string large_string(70000, 'a');
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c->start_serialize<char> ();
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unsigned obj_d = add_object ("f", 1, c);
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unsigned obj_e = add_object ("f", 1, c);
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start_object (large_string.c_str(), 60000, c);
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add_offset (obj_d, c);
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unsigned obj_b = c->pop_pack ();
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start_object (large_string.c_str(), 60000, c);
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add_offset (obj_e, c);
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unsigned obj_c = c->pop_pack ();
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start_object ("a", 1, c);
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add_wide_offset (obj_b, c);
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add_wide_offset (obj_c, c);
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c->pop_pack ();
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c->end_serialize();
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}
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static void
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static void
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populate_serializer_complex_1 (hb_serialize_context_t* c)
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populate_serializer_complex_1 (hb_serialize_context_t* c)
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{
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{
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@ -509,7 +573,7 @@ static void test_resolve_overflows_via_isolation ()
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hb_serialize_context_t out (out_buffer, buffer_size);
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hb_serialize_context_t out (out_buffer, buffer_size);
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assert (c.offset_overflow ());
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assert (c.offset_overflow ());
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hb_resolve_overflows (c.object_graph (), HB_TAG ('G', 'S', 'U', 'B'), &out);
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hb_resolve_overflows (c.object_graph (), HB_TAG ('G', 'S', 'U', 'B'), &out, 0);
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assert (!out.offset_overflow ());
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assert (!out.offset_overflow ());
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hb_bytes_t result = out.copy_bytes ();
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hb_bytes_t result = out.copy_bytes ();
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assert (result.length == (1 + 10000 + 60000 + 1 + 1
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assert (result.length == (1 + 10000 + 60000 + 1 + 1
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@ -520,11 +584,57 @@ static void test_resolve_overflows_via_isolation ()
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free (out_buffer);
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free (out_buffer);
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}
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}
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// TODO(grieger): test for recursively duplicated nodes during isolation.
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static void test_resolve_overflows_via_isolation_with_recursive_duplication ()
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// TODO(grieger): test that isolated subgraphs are packed tightly within the subgraph.
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{
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size_t buffer_size = 160000;
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void* buffer = malloc (buffer_size);
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hb_serialize_context_t c (buffer, buffer_size);
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populate_serializer_with_isolation_overflow_complex (&c);
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graph_t graph (c.object_graph ());
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void* out_buffer = malloc (buffer_size);
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hb_serialize_context_t out (out_buffer, buffer_size);
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assert (c.offset_overflow ());
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hb_resolve_overflows (c.object_graph (), HB_TAG ('G', 'S', 'U', 'B'), &out, 0);
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assert (!out.offset_overflow ());
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hb_bytes_t result = out.copy_bytes ();
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unsigned expected_length = 8 + 10000 + 60000; // objects
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expected_length += 4 + 2 * 9; // links
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assert (result.length == expected_length);
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result.fini ();
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free (buffer);
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free (out_buffer);
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}
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static void test_resolve_overflows_via_isolation_spaces ()
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{
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size_t buffer_size = 160000;
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void* buffer = malloc (buffer_size);
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hb_serialize_context_t c (buffer, buffer_size);
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populate_serializer_with_isolation_overflow_spaces (&c);
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graph_t graph (c.object_graph ());
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void* out_buffer = malloc (buffer_size);
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hb_serialize_context_t out (out_buffer, buffer_size);
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assert (c.offset_overflow ());
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hb_resolve_overflows (c.object_graph (), HB_TAG ('G', 'S', 'U', 'B'), &out, 0);
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assert (!out.offset_overflow ());
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hb_bytes_t result = out.copy_bytes ();
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unsigned expected_length = 3 + 2 * 60000; // objects
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expected_length += 2 * 4 + 2 * 2; // links
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assert (result.length == expected_length);
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result.fini ();
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free (buffer);
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free (out_buffer);
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}
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// TODO(garretrieger): update will_overflow tests to check the overflows array.
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// TODO(garretrieger): update will_overflow tests to check the overflows array.
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// TODO(garretrieger): add a test(s) using a real font.
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// TODO(garretrieger): add tests for priority raising.
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// TODO(garretrieger): add tests for priority raising.
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int
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int
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@ -540,6 +650,8 @@ main (int argc, char **argv)
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test_resolve_overflows_via_sort ();
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test_resolve_overflows_via_sort ();
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test_resolve_overflows_via_duplication ();
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test_resolve_overflows_via_duplication ();
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test_resolve_overflows_via_isolation ();
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test_resolve_overflows_via_isolation ();
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test_resolve_overflows_via_isolation_with_recursive_duplication ();
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test_resolve_overflows_via_isolation_spaces ();
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test_duplicate_leaf ();
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test_duplicate_leaf ();
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test_duplicate_interior ();
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test_duplicate_interior ();
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}
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}
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