73 MemMap::Maps* MemMap::maps_ = nullptr;
139   if (map.get() == nullptr) {  in ContainedWithinExistingMap()
163   if (map.get() == nullptr) {  in CheckNonOverlapping()
199   if (expected_ptr == nullptr) {  in CheckMapRequest()
242     return new MemMap(name, nullptr, 0, nullptr, 0, prot, false);  in MapAnonymous()
268       return nullptr;  in MapAnonymous()
287     return nullptr;  in MapAnonymous()
298   if (low_4gb && expected_ptr == nullptr) {  in MapAnonymous()
360   if (low_4gb && expected_ptr == nullptr) {  in MapAnonymous()
376     return nullptr;  in MapAnonymous()
380     return nullptr;  in MapAnonymous()
397     CHECK(expected_ptr != nullptr);  in MapFileAtAddress()
412     return new MemMap(filename, nullptr, 0, nullptr, 0, prot, false);  in MapFileAtAddress()
421   byte* page_aligned_expected = (expected_ptr == nullptr) ? nullptr : (expected_ptr - page_offset);  in MapFileAtAddress()
440     return nullptr;  in MapFileAtAddress()
444     return nullptr;  in MapFileAtAddress()
451   if (base_begin_ == nullptr && base_size_ == 0) {  in ~MemMap()
464   DCHECK(maps_ != nullptr);  in ~MemMap()
481     CHECK(begin_ == nullptr);  in MemMap()
482     CHECK(base_begin_ == nullptr);  in MemMap()
485     CHECK(begin_ != nullptr);  in MemMap()
486     CHECK(base_begin_ != nullptr);  in MemMap()
491     DCHECK(maps_ != nullptr);  in MemMap()
510     return new MemMap(tail_name, nullptr, 0, nullptr, 0, tail_prot, false);  in RemapAtEnd()
531     return nullptr;  in RemapAtEnd()
546     return nullptr;  in RemapAtEnd()
560     return nullptr;  in RemapAtEnd()
566   if (base_begin_ != nullptr || base_size_ != 0) {  in MadviseDontNeedAndZero()
578   if (base_begin_ == nullptr && base_size_ == 0) {  in Protect()
595   CHECK(begin_map != nullptr);  in CheckNoGaps()
596   CHECK(end_map != nullptr);  in CheckNoGaps()
603     if (next_map == nullptr) {  in CheckNoGaps()
634   MemMap* largest_map = nullptr;  in GetLargestMemMapAt()
635   DCHECK(maps_ != nullptr);  in GetLargestMemMapAt()
639     CHECK(map != nullptr);  in GetLargestMemMapAt()
650   if (maps_ == nullptr) {  in Init()
659   maps_ = nullptr;  in Shutdown()