diff options
Diffstat (limited to 'runtime/gc/accounting/space_bitmap.cc')
| -rw-r--r-- | runtime/gc/accounting/space_bitmap.cc | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/runtime/gc/accounting/space_bitmap.cc b/runtime/gc/accounting/space_bitmap.cc index 3c5688d5bd..a0458d2ae1 100644 --- a/runtime/gc/accounting/space_bitmap.cc +++ b/runtime/gc/accounting/space_bitmap.cc @@ -16,6 +16,9 @@ #include "space_bitmap-inl.h" +#include <iomanip> +#include <sstream> + #include "android-base/stringprintf.h" #include "art_field-inl.h" @@ -113,6 +116,37 @@ std::string SpaceBitmap<kAlignment>::Dump() const { reinterpret_cast<void*>(HeapLimit())); } +template <size_t kAlignment> +std::string SpaceBitmap<kAlignment>::DumpMemAround(mirror::Object* obj) const { + uintptr_t addr = reinterpret_cast<uintptr_t>(obj); + DCHECK_GE(addr, heap_begin_); + DCHECK(HasAddress(obj)) << obj; + const uintptr_t offset = addr - heap_begin_; + const size_t index = OffsetToIndex(offset); + const uintptr_t mask = OffsetToMask(offset); + size_t num_entries = bitmap_size_ / sizeof(uintptr_t); + DCHECK_LT(index, num_entries) << " bitmap_size_ = " << bitmap_size_; + Atomic<uintptr_t>* atomic_entry = &bitmap_begin_[index]; + uintptr_t prev = 0; + uintptr_t next = 0; + if (index > 0) { + prev = (atomic_entry - 1)->load(std::memory_order_relaxed); + } + uintptr_t curr = atomic_entry->load(std::memory_order_relaxed); + if (index < num_entries - 1) { + next = (atomic_entry + 1)->load(std::memory_order_relaxed); + } + std::ostringstream oss; + oss << " offset: " << offset + << " index: " << index + << " mask: " << std::hex << std::setfill('0') << std::setw(16) << mask + << " words {" << std::hex << std::setfill('0') << std::setw(16) << prev + << ", " << std::hex << std::setfill('0') << std::setw(16) << curr + << ", " << std::hex <<std::setfill('0') << std::setw(16) << next + << "}"; + return oss.str(); +} + template<size_t kAlignment> void SpaceBitmap<kAlignment>::Clear() { if (bitmap_begin_ != nullptr) { |