template <class Config, void (*PostInitCallback)(void) = EmptyCallback>

class Allocator

Defined at line 51 of file ../../third_party/scudo/src/combined.h

Public Members

static const uptr MaxTraceSize

Public Methods

void callPostInitCallback ()

Defined at line 62 of file ../../third_party/scudo/src/combined.h

void init ()

Defined at line 145 of file ../../third_party/scudo/src/combined.h

void enableRingBuffer ()

Defined at line 200 of file ../../third_party/scudo/src/combined.h

void disableRingBuffer ()

Defined at line 207 of file ../../third_party/scudo/src/combined.h

void initGwpAsan ()

Initialize the embedded GWP-ASan instance. Requires the main allocator to

be functional, best called from PostInitCallback.

Defined at line 216 of file ../../third_party/scudo/src/combined.h

const gwp_asan::AllocationMetadata * getGwpAsanAllocationMetadata ()

Defined at line 247 of file ../../third_party/scudo/src/combined.h

const gwp_asan::AllocatorState * getGwpAsanAllocatorState ()

Defined at line 251 of file ../../third_party/scudo/src/combined.h

void initThreadMaybe (bool MinimalInit)

Defined at line 256 of file ../../third_party/scudo/src/combined.h

void unmapTestOnly ()

Defined at line 260 of file ../../third_party/scudo/src/combined.h

TSDRegistryT * getTSDRegistry ()

Defined at line 272 of file ../../third_party/scudo/src/combined.h

QuarantineT * getQuarantine ()

Defined at line 273 of file ../../third_party/scudo/src/combined.h

void initAllocator (SizeClassAllocatorT * SizeClassAllocator)

The Cache must be provided zero-initialized.

Defined at line 276 of file ../../third_party/scudo/src/combined.h

void commitBack (TSD<ThisT> * TSD)

Release the resources used by a TSD, which involves:

- draining the local quarantine cache to the global quarantine;

- releasing the cached pointers back to the Primary;

- unlinking the local stats from the global ones (destroying the cache does

the last two items).

Defined at line 285 of file ../../third_party/scudo/src/combined.h

void drainCache (TSD<ThisT> * TSD)

Defined at line 294 of file ../../third_party/scudo/src/combined.h

void drainCaches ()

Defined at line 303 of file ../../third_party/scudo/src/combined.h

void * getHeaderTaggedPointer (void * Ptr)

Defined at line 305 of file ../../third_party/scudo/src/combined.h

uptr addHeaderTag (uptr Ptr)

Defined at line 317 of file ../../third_party/scudo/src/combined.h

void * addHeaderTag (void * Ptr)

Defined at line 323 of file ../../third_party/scudo/src/combined.h

u32 collectStackTrace (StackDepot * Depot)

Defined at line 327 of file ../../third_party/scudo/src/combined.h

uptr computeOddEvenMaskForPointerMaybe (const Options & Options, uptr Ptr, uptr ClassId)

Defined at line 341 of file ../../third_party/scudo/src/combined.h

void * allocate (uptr Size, Chunk::Origin Origin, uptr Alignment, bool ZeroContents)

Defined at line 354 of file ../../third_party/scudo/src/combined.h

void deallocate (void * Ptr, Chunk::Origin Origin)

Defined at line 447 of file ../../third_party/scudo/src/combined.h

void deallocateSized (void * Ptr, Chunk::Origin Origin, uptr DeleteSize)

Defined at line 451 of file ../../third_party/scudo/src/combined.h

void deallocateSizedAligned (void * Ptr, Chunk::Origin Origin, uptr DeleteSize, uptr DeleteAlignment)

Defined at line 457 of file ../../third_party/scudo/src/combined.h

void deallocateAligned (void * Ptr, Chunk::Origin Origin, uptr DeleteAlignment)

Defined at line 464 of file ../../third_party/scudo/src/combined.h

void checkSizeMatch (const void * Ptr, Chunk::UnpackedHeader * Header, uptr Size, uptr DeallocSize)

Defined at line 470 of file ../../third_party/scudo/src/combined.h

void checkTypeMatch (AllocatorAction Action, const void * Ptr, u8 AllocOrigin, u8 DeallocOrigin)

Defined at line 481 of file ../../third_party/scudo/src/combined.h

void deallocate (void * Ptr, u8 DeallocOrigin, uptr DeleteSize, uptr DeleteAlignment)

Defined at line 505 of file ../../third_party/scudo/src/combined.h

void * reallocate (void * OldPtr, uptr NewSize, uptr Alignment)

Defined at line 566 of file ../../third_party/scudo/src/combined.h

void disable ()

TODO(kostyak): disable() is currently best-effort. There are some small

windows of time when an allocation could still succeed after

this function finishes. We will revisit that later.

Defined at line 671 of file ../../third_party/scudo/src/combined.h

void enable ()

Defined at line 685 of file ../../third_party/scudo/src/combined.h

uptr getStats (char * Buffer, uptr Size)

The function returns the amount of bytes required to store the statistics,

which might be larger than the amount of bytes provided. Note that the

statistics buffer is not necessarily constant between calls to this

function. This can be called with a null buffer or zero size for buffer

sizing purposes.

Defined at line 704 of file ../../third_party/scudo/src/combined.h

void printStats ()

Defined at line 716 of file ../../third_party/scudo/src/combined.h

void printFragmentationInfo ()

Defined at line 722 of file ../../third_party/scudo/src/combined.h

void releaseToOS (ReleaseToOS ReleaseType)

Defined at line 729 of file ../../third_party/scudo/src/combined.h

void iterateOverChunks (uptr Base, uptr Size, iterate_callback Callback, void * Arg)

Iterate over all chunks and call a callback for all busy chunks located

within the provided memory range. Said callback must not use this allocator

or a deadlock can ensue. This fits Android's malloc_iterate() needs.

Defined at line 741 of file ../../third_party/scudo/src/combined.h

bool canReturnNull ()

Defined at line 792 of file ../../third_party/scudo/src/combined.h

bool setOption (Option O, sptr Value)

Defined at line 797 of file ../../third_party/scudo/src/combined.h

uptr getUsableSize (const void * Ptr, Chunk::UnpackedHeader * Header)

Defined at line 824 of file ../../third_party/scudo/src/combined.h

uptr getUsableSize (const void * Ptr)

Return the usable size for a given chunk. If MTE is enabled or if the

ExactUsableSize config parameter is true, we report the exact size of

the original allocation size. Otherwise, we will return the total

actual usable size.

Defined at line 844 of file ../../third_party/scudo/src/combined.h

uptr getAllocSize (const void * Ptr)

Defined at line 870 of file ../../third_party/scudo/src/combined.h

void getStats (StatCounters S)

Defined at line 889 of file ../../third_party/scudo/src/combined.h

bool isOwned (const void * Ptr)

Returns true if the pointer provided was allocated by the current

allocator instance, which is compliant with tcmalloc's ownership concept.

A corrupted chunk will not be reported as owned, which is WAI.

Defined at line 897 of file ../../third_party/scudo/src/combined.h

bool useMemoryTaggingTestOnly ()

Defined at line 914 of file ../../third_party/scudo/src/combined.h

void disableMemoryTagging ()

Defined at line 917 of file ../../third_party/scudo/src/combined.h

void setTrackAllocationStacks (bool Track)

Defined at line 931 of file ../../third_party/scudo/src/combined.h

void setFillContents (FillContentsMode FillContents)

Defined at line 945 of file ../../third_party/scudo/src/combined.h

void setAddLargeAllocationSlack (bool AddSlack)

Defined at line 950 of file ../../third_party/scudo/src/combined.h

const char * getStackDepotAddress ()

Defined at line 958 of file ../../third_party/scudo/src/combined.h

uptr getStackDepotSize ()

Defined at line 964 of file ../../third_party/scudo/src/combined.h

const char * getRegionInfoArrayAddress ()

Defined at line 970 of file ../../third_party/scudo/src/combined.h

uptr getRegionInfoArraySize ()

Defined at line 974 of file ../../third_party/scudo/src/combined.h

const char * getRingBufferAddress ()

Defined at line 978 of file ../../third_party/scudo/src/combined.h

uptr getRingBufferSize ()

Defined at line 983 of file ../../third_party/scudo/src/combined.h

void collectTraceMaybe (const StackDepot * Depot, uintptr_t (&)[64] Trace, u32 Hash)

Defined at line 993 of file ../../third_party/scudo/src/combined.h

void getErrorInfo (struct scudo_error_info * ErrorInfo, uintptr_t FaultAddr, const char * DepotPtr, size_t DepotSize, const char * RegionInfoPtr, const char * RingBufferPtr, size_t RingBufferSize, const char * Memory, const char * MemoryTags, uintptr_t MemoryAddr, size_t MemorySize)

Defined at line 1002 of file ../../third_party/scudo/src/combined.h

uptr getBlockBeginTestOnly (const void * Ptr)

Defined at line 1050 of file ../../third_party/scudo/src/combined.h

Records

```
class QuarantineCallback
```