diff options
Diffstat (limited to 'runtime/gc/accounting/card_table.cc')
| -rw-r--r-- | runtime/gc/accounting/card_table.cc | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/runtime/gc/accounting/card_table.cc b/runtime/gc/accounting/card_table.cc index 7879632..1a7b1a3 100644 --- a/runtime/gc/accounting/card_table.cc +++ b/runtime/gc/accounting/card_table.cc @@ -36,7 +36,7 @@ constexpr uint8_t CardTable::kCardDirty; /* * Maintain a card table from the write barrier. All writes of - * non-NULL values to heap addresses should go through an entry in + * non-null values to heap addresses should go through an entry in * WriteBarrier, and from there to here. * * The heap is divided into "cards" of GC_CARD_SIZE bytes, as @@ -44,7 +44,7 @@ constexpr uint8_t CardTable::kCardDirty; * data per card, to be used by the GC. The value of the byte will be * one of GC_CARD_CLEAN or GC_CARD_DIRTY. * - * After any store of a non-NULL object pointer into a heap object, + * After any store of a non-null object pointer into a heap object, * code is obliged to mark the card dirty. The setters in * object.h [such as SetFieldObject] do this for you. The * compiler also contains code to mark cards as dirty. @@ -64,13 +64,13 @@ CardTable* CardTable::Create(const uint8_t* heap_begin, size_t heap_capacity) { std::unique_ptr<MemMap> mem_map( MemMap::MapAnonymous("card table", nullptr, capacity + 256, PROT_READ | PROT_WRITE, false, false, &error_msg)); - CHECK(mem_map.get() != NULL) << "couldn't allocate card table: " << error_msg; + CHECK(mem_map.get() != nullptr) << "couldn't allocate card table: " << error_msg; // All zeros is the correct initial value; all clean. Anonymous mmaps are initialized to zero, we // don't clear the card table to avoid unnecessary pages being allocated static_assert(kCardClean == 0, "kCardClean must be 0"); uint8_t* cardtable_begin = mem_map->Begin(); - CHECK(cardtable_begin != NULL); + CHECK(cardtable_begin != nullptr); // We allocated up to a bytes worth of extra space to allow biased_begin's byte value to equal // kCardDirty, compute a offset value to make this the case |