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PMM - alloc zero after all free pages

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This commit is contained in:
Thomas Lovén 2017-12-21 15:17:28 +01:00
parent 9b930ae5d3
commit e7bdea771b
2 changed files with 10 additions and 1 deletions
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4
src/kernel/memory/pmm.c
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@ -9,5 +9,7 @@ void pmm_free(void *c)
void *pmm_alloc() void *pmm_alloc()
{ {
return first; void *c = first;
first = 0;
return c;
} }

7
src/kernel/memory/pmm.tt
View File

@ -18,3 +18,10 @@ TEST(alloc_returns_0_if_no_free_pages)
void *a = pmm_alloc(); void *a = pmm_alloc();
ASSERT_EQ_PTR(a, 0); ASSERT_EQ_PTR(a, 0);
} }
TEST(alloc_zero_after_all_free_pages)
{
pmm_free(&mem[0]);
pmm_alloc();
void *a = pmm_alloc();
ASSERT_EQ_PTR(a, 0);
}