lib/fbl/arena_tests.cpp

163 // Test helper. Counts the number of committed and uncommitted pages in the
164 // range. Returns {*committed, *uncommitted} = {0, 0} if |start| doesn't
167     vaddr_t start, vaddr_t end, size_t* committed, size_t* uncommitted) {
169     *committed = 0;
177         // It's a VMAR, not a mapping, so no pages are committed.
185     *committed = mapping->vmo()->AllocatedPagesInRange(
187     *uncommitted = (end_off - start_off) / PAGE_SIZE - *committed;
201     // Nothing is allocated yet, so no pages should be committed.
202     size_t committed;
205         count_committed_pages(start, end, &committed, &uncommitted), "");
206     EXPECT_EQ(0u, committed, "");
214     // The page containing the object should be committed.
217     EXPECT_TRUE(count_committed_pages(ps, pe, &committed, &uncommitted), "");
218     EXPECT_GT(committed, 0u, "");
221     // The first handful of pages should also become committed, but the rest
224         count_committed_pages(start, end, &committed, &uncommitted), "");
225     EXPECT_GT(committed, 0u, "");
228     // Fill the committed pages with objects; the set of committed pages
230     auto orig_committed = committed;
237         count_committed_pages(start, end, &committed, &uncommitted), "");
238     EXPECT_EQ(orig_committed, committed, "");
241     // Allocating one more object should cause more pages to be committed.
245         count_committed_pages(start, end, &committed, &uncommitted), "");
246     EXPECT_LT(orig_committed, committed, "");
300     // Nothing is allocated yet, so no control pages should be committed.
301     size_t committed;
304         count_committed_pages(start, end, &committed, &uncommitted), "");
305     EXPECT_EQ(num_pages, committed + uncommitted, "");
306     EXPECT_EQ(0u, committed, "");
322     // We still shouldn't see any control pages committed, becase no objects
325         count_committed_pages(start, end, &committed, &uncommitted), "");
326     EXPECT_EQ(num_pages, committed + uncommitted, "");
327     EXPECT_EQ(0u, committed, "");
337     // We should now see some committed pages inside the control pool.
339         count_committed_pages(start, end, &committed, &uncommitted), "");
340     EXPECT_EQ(num_pages, committed + uncommitted, "");
341     EXPECT_GT(committed, 0u, "");
349     // All of the control pages should be committed.
351         count_committed_pages(start, end, &committed, &uncommitted), "");
352     EXPECT_EQ(num_pages, committed + uncommitted, "");
353     EXPECT_EQ(committed, num_pages, "");
358     auto orig_committed = committed;
367     // The number of committed pages should have dropped.
369         count_committed_pages(start, end, &committed, &uncommitted), "");
370     EXPECT_EQ(num_pages, committed + uncommitted, "");
371     EXPECT_LT(committed, orig_committed, "");
376     orig_committed = committed;
384             count_committed_pages(start, end, &committed, &uncommitted), "");
385         if (committed != orig_committed) {
389     EXPECT_GT(orig_committed, committed, "");
392     // cause the number of committed pages to change: there should be some
394     orig_committed = committed;
397         count_committed_pages(start, end, &committed, &uncommitted), "");
398     EXPECT_EQ(num_pages, committed + uncommitted, "");
399     EXPECT_EQ(committed, orig_committed, "");
407         count_committed_pages(start, end, &committed, &uncommitted), "");
408     EXPECT_EQ(num_pages, committed + uncommitted, "");
409     EXPECT_EQ(committed, orig_committed, "");
435     // Should see some committed pages.
436     size_t committed;
439         count_committed_pages(start, end, &committed, &uncommitted), "");
440     EXPECT_GT(committed, 0u, "");
446         count_committed_pages(start, end, &committed, &uncommitted), "");
450     EXPECT_EQ(committed, 0u, "");