Crashpad
Public Member Functions | Protected Member Functions | List of all members
crashpad::MinidumpHandleDataWriter Class Referencefinal

The writer for a MINIDUMP_HANDLE_DATA_STREAM stream in a minidump and its contained MINIDUMP_HANDLE_DESCRIPTOR s. More...

#include "minidump/minidump_handle_writer.h"

Inheritance diagram for crashpad::MinidumpHandleDataWriter:
crashpad::internal::MinidumpStreamWriter crashpad::internal::MinidumpWritable

Public Member Functions

void InitializeFromSnapshot (const std::vector< HandleSnapshot > &handle_snapshots)
 Adds a MINIDUMP_HANDLE_DESCRIPTOR for each handle in handle_snapshot to the MINIDUMP_HANDLE_DATA_STREAM. More...
 
- Public Member Functions inherited from crashpad::internal::MinidumpStreamWriter
const MINIDUMP_DIRECTORYDirectoryListEntry () const
 Returns a MINIDUMP_DIRECTORY entry that serves as a pointer to this stream. More...
 
- Public Member Functions inherited from crashpad::internal::MinidumpWritable
virtual bool WriteEverything (FileWriterInterface *file_writer)
 Writes an object and all of its children to a minidump file. More...
 
void RegisterRVA (RVA *rva)
 Registers a file offset pointer as one that should point to the object on which this method is called. More...
 
void RegisterLocationDescriptor (MINIDUMP_LOCATION_DESCRIPTOR *location_descriptor)
 Registers a location descriptor as one that should point to the object on which this method is called. More...
 

Protected Member Functions

bool Freeze () override
 Transitions the object from kStateMutable to kStateFrozen. More...
 
size_t SizeOfObject () override
 Returns the amount of space that this object will consume when written to a minidump file, in bytes, not including any leading or trailing padding necessary to maintain proper alignment. More...
 
std::vector< MinidumpWritable * > Children () override
 Returns the object’s children. More...
 
bool WriteObject (FileWriterInterface *file_writer) override
 Writes the object’s content. More...
 
MinidumpStreamType StreamType () const override
 Returns an object’s stream type. More...
 
- Protected Member Functions inherited from crashpad::internal::MinidumpStreamWriter
bool Freeze () override
 Transitions the object from kStateMutable to kStateFrozen. More...
 
- Protected Member Functions inherited from crashpad::internal::MinidumpWritable
State state () const
 The state of the object.
 
virtual size_t Alignment ()
 Returns the object’s desired byte-boundary alignment. More...
 
virtual Phase WritePhase ()
 Returns the object’s desired write phase. More...
 
size_t WillWriteAtOffset (Phase phase, FileOffset *offset, std::vector< MinidumpWritable * > *write_sequence)
 Prepares the object to be written at a known file offset, transitioning it from kStateFrozen to kStateWritable. More...
 
virtual bool WillWriteAtOffsetImpl (FileOffset offset)
 Called once an object’s writable file offset is determined, as it transitions into kStateWritable. More...
 
bool WritePaddingAndObject (FileWriterInterface *file_writer)
 Writes the object, transitioning it from kStateWritable to kStateWritten. More...
 

Additional Inherited Members

- Protected Types inherited from crashpad::internal::MinidumpWritable
enum  State
 Identifies the state of an object. More...
 
enum  Phase
 Identifies the phase during which an object will be written to a minidump file. More...
 
- Static Protected Attributes inherited from crashpad::internal::MinidumpWritable
static constexpr size_t kInvalidSize = std::numeric_limits<size_t>::max()
 A size value used to signal failure by methods that return size_t.
 

Detailed Description

The writer for a MINIDUMP_HANDLE_DATA_STREAM stream in a minidump and its contained MINIDUMP_HANDLE_DESCRIPTOR s.

As we currently do not track any data beyond what MINIDUMP_HANDLE_DESCRIPTOR supports, we only write that type of record rather than the newer MINIDUMP_HANDLE_DESCRIPTOR_2.

Note that this writer writes both the header (MINIDUMP_HANDLE_DATA_STREAM) and the list of objects (MINIDUMP_HANDLE_DESCRIPTOR), which is different from some of the other list writers.

Member Function Documentation

◆ Children()

std::vector< internal::MinidumpWritable * > crashpad::MinidumpHandleDataWriter::Children ( )
overrideprotectedvirtual

Returns the object’s children.

Note
Valid in kStateFrozen or any subsequent state.

Reimplemented from crashpad::internal::MinidumpWritable.

◆ Freeze()

bool crashpad::MinidumpHandleDataWriter::Freeze ( )
overrideprotectedvirtual

Transitions the object from kStateMutable to kStateFrozen.

The default implementation marks the object as frozen and recursively calls Freeze() on all of its children. Subclasses may override this method to perform processing that should only be done once callers have finished populating an object with data. Typically, a subclass implementation would call RegisterRVA() or RegisterLocationDescriptor() on other objects as appropriate, because at the time Freeze() runs, the in-memory locations of RVAs and location descriptors are known and will not change for the remaining duration of an object’s lifetime.

Returns
true on success. false on failure, with an appropriate message logged.

Reimplemented from crashpad::internal::MinidumpWritable.

◆ InitializeFromSnapshot()

void crashpad::MinidumpHandleDataWriter::InitializeFromSnapshot ( const std::vector< HandleSnapshot > &  handle_snapshots)

Adds a MINIDUMP_HANDLE_DESCRIPTOR for each handle in handle_snapshot to the MINIDUMP_HANDLE_DATA_STREAM.

Parameters
[in]handle_snapshotsThe handle snapshots to use as source data.
Note
Valid in kStateMutable.

◆ SizeOfObject()

size_t crashpad::MinidumpHandleDataWriter::SizeOfObject ( )
overrideprotectedvirtual

Returns the amount of space that this object will consume when written to a minidump file, in bytes, not including any leading or trailing padding necessary to maintain proper alignment.

Note
Valid in kStateFrozen or any subsequent state.

Implements crashpad::internal::MinidumpWritable.

◆ StreamType()

MinidumpStreamType crashpad::MinidumpHandleDataWriter::StreamType ( ) const
overrideprotectedvirtual

Returns an object’s stream type.

Note
Valid in any state.

Implements crashpad::internal::MinidumpStreamWriter.

◆ WriteObject()

bool crashpad::MinidumpHandleDataWriter::WriteObject ( FileWriterInterface file_writer)
overrideprotectedvirtual

Writes the object’s content.

Parameters
[in]file_writerThe file writer to receive the object’s content.
Returns
true on success. false on error, indicating that the content could not be written to the minidump file.
Note
Valid in kStateWritable. The object will transition to kStateWritten after this method returns.

Implements crashpad::internal::MinidumpWritable.


The documentation for this class was generated from the following files: