dart::Sample Class Reference

#include <profiler.h>

Public Member Functions
	Sample ()=default
void	Init (Dart_Port port, int64_t timestamp, ThreadId tid)
Dart_Port	port () const
ThreadId	tid () const
void	Clear ()
int64_t	timestamp () const
uword	pc () const
uword	At (intptr_t i) const
void	SetAt (intptr_t i, uword pc)
void	DumpStackTrace ()
uword	vm_tag () const
void	set_vm_tag (uword tag)
uword	user_tag () const
void	set_user_tag (uword tag)
bool	leaf_frame_is_dart () const
void	set_leaf_frame_is_dart (bool leaf_frame_is_dart)
bool	ignore_sample () const
void	set_ignore_sample (bool ignore_sample)
bool	exit_frame_sample () const
void	set_exit_frame_sample (bool exit_frame_sample)
bool	missing_frame_inserted () const
void	set_missing_frame_inserted (bool missing_frame_inserted)
bool	truncated_trace () const
void	set_truncated_trace (bool truncated_trace)
bool	is_allocation_sample () const
void	set_is_allocation_sample (bool allocation_sample)
uint32_t	allocation_identity_hash () const
void	set_allocation_identity_hash (uint32_t hash)
Thread::TaskKind	thread_task () const
void	set_thread_task (Thread::TaskKind task)
bool	is_continuation_sample () const
void	SetContinuation (Sample *next)
Sample *	continuation_sample () const
intptr_t	allocation_cid () const
void	set_head_sample (bool head_sample)
bool	head_sample () const
intptr_t	metadata () const
void	set_metadata (intptr_t metadata)
void	SetAllocationCid (intptr_t cid)
uword *	GetPCArray ()
uword *	GetStackBuffer ()

Static Public Attributes
static constexpr int	kPCArraySizeInWords = 32
static constexpr int	kStackBufferSizeInWords = 2

Detailed Description

Definition at line 195 of file profiler.h.

Constructor & Destructor Documentation

Sample()

dart::Sample::Sample ( )

default

Member Function Documentation

allocation_cid()

intptr_t dart::Sample::allocation_cid ( ) const

inline

Definition at line 341 of file profiler.h.

                                  {
    ASSERT(is_allocation_sample());
    return metadata();
  }

allocation_identity_hash()

uint32_t dart::Sample::allocation_identity_hash ( ) const

inline

Definition at line 314 of file profiler.h.

                                            {
    return allocation_identity_hash_;
  }

At()

uword dart::Sample::At ( intptr_t  i ) const

inline

Definition at line 237 of file profiler.h.

                             {
    ASSERT(i >= 0);
    ASSERT(i < kPCArraySizeInWords);
    return pc_array_[i];
  }

Clear()

void dart::Sample::Clear ( )

inline

Definition at line 212 of file profiler.h.

               {
    timestamp_ = 0;
    port_ = ILLEGAL_PORT;
    tid_ = OSThread::kInvalidThreadId;
    for (intptr_t i = 0; i < kStackBufferSizeInWords; i++) {
      stack_buffer_[i] = 0;
    }
    for (intptr_t i = 0; i < kPCArraySizeInWords; i++) {
      pc_array_[i] = 0;
    }
    vm_tag_ = VMTag::kInvalidTagId;
    user_tag_ = UserTags::kDefaultUserTag;
    state_ = 0;
    next_ = nullptr;
    allocation_identity_hash_ = 0;
    set_head_sample(true);
  }

continuation_sample()

Sample * dart::Sample::continuation_sample ( ) const

inline

Definition at line 339 of file profiler.h.

{ return next_; }

DumpStackTrace()

void dart::Sample::DumpStackTrace ( )

inline

Definition at line 250 of file profiler.h.

                        {
    for (intptr_t i = 0; i < kPCArraySizeInWords; ++i) {
      uintptr_t start = 0;
      uword pc = At(i);
      char* native_symbol_name =
          NativeSymbolResolver::LookupSymbolName(pc, &start);
      if (native_symbol_name == nullptr) {
        OS::PrintErr("  [0x%" Pp "] Unknown symbol\n", pc);
      } else {
        OS::PrintErr("  [0x%" Pp "] %s\n", pc, native_symbol_name);
        NativeSymbolResolver::FreeSymbolName(native_symbol_name);
      }
    }
  }

exit_frame_sample()

bool dart::Sample::exit_frame_sample ( ) const

inline

Definition at line 286 of file profiler.h.

{ return ExitFrameBit::decode(state_); }

GetPCArray()

uword * dart::Sample::GetPCArray ( )

inline

Definition at line 363 of file profiler.h.

{ return &pc_array_[0]; }

GetStackBuffer()

uword * dart::Sample::GetStackBuffer ( )

inline

Definition at line 366 of file profiler.h.

{ return &stack_buffer_[0]; }

head_sample()

bool dart::Sample::head_sample ( ) const

inline

Definition at line 350 of file profiler.h.

{ return HeadSampleBit::decode(state_); }

ignore_sample()

bool dart::Sample::ignore_sample ( ) const

inline

Definition at line 280 of file profiler.h.

{ return IgnoreBit::decode(state_); }

Init()

void dart::Sample::Init ( Dart_Port  port, int64_t  timestamp, ThreadId  tid  )

inline

Definition at line 199 of file profiler.h.

                                                             {
    Clear();
    timestamp_ = timestamp;
    tid_ = tid;
    port_ = port;
    next_ = nullptr;
  }

is_allocation_sample()

bool dart::Sample::is_allocation_sample ( ) const

inline

Definition at line 306 of file profiler.h.

                                    {
    return ClassAllocationSampleBit::decode(state_);
  }

is_continuation_sample()

bool dart::Sample::is_continuation_sample ( ) const

inline

Definition at line 328 of file profiler.h.

                                      {
    return ContinuationSampleBit::decode(state_);
  }

leaf_frame_is_dart()

bool dart::Sample::leaf_frame_is_dart ( ) const

inline

Definition at line 274 of file profiler.h.

{ return LeafFrameIsDart::decode(state_); }

metadata()

intptr_t dart::Sample::metadata ( ) const

inline

Definition at line 352 of file profiler.h.

{ return MetadataBits::decode(state_); }

missing_frame_inserted()

bool dart::Sample::missing_frame_inserted ( ) const

inline

Definition at line 292 of file profiler.h.

                                      {
    return MissingFrameInsertedBit::decode(state_);
  }

pc()

uword dart::Sample::pc ( ) const

inline

Definition at line 234 of file profiler.h.

{ return At(0); }

port()

Dart_Port dart::Sample::port ( ) const

inline

Definition at line 207 of file profiler.h.

{ return port_; }

set_allocation_identity_hash()

void dart::Sample::set_allocation_identity_hash ( uint32_t  hash )

inline

Definition at line 318 of file profiler.h.

                                                   {
    allocation_identity_hash_ = hash;
  }

set_exit_frame_sample()

void dart::Sample::set_exit_frame_sample ( bool  exit_frame_sample )

inline

Definition at line 288 of file profiler.h.

                                                     {
    state_ = ExitFrameBit::update(exit_frame_sample, state_);
  }

set_head_sample()

void dart::Sample::set_head_sample ( bool  head_sample )

inline

Definition at line 346 of file profiler.h.

                                         {
    state_ = HeadSampleBit::update(head_sample, state_);
  }

set_ignore_sample()

void dart::Sample::set_ignore_sample ( bool  ignore_sample )

inline

Definition at line 282 of file profiler.h.

                                             {
    state_ = IgnoreBit::update(ignore_sample, state_);
  }

set_is_allocation_sample()

void dart::Sample::set_is_allocation_sample ( bool  allocation_sample )

inline

Definition at line 310 of file profiler.h.

                                                        {
    state_ = ClassAllocationSampleBit::update(allocation_sample, state_);
  }

set_leaf_frame_is_dart()

void dart::Sample::set_leaf_frame_is_dart ( bool  leaf_frame_is_dart )

inline

Definition at line 276 of file profiler.h.

                                                       {
    state_ = LeafFrameIsDart::update(leaf_frame_is_dart, state_);
  }

set_metadata()

void dart::Sample::set_metadata ( intptr_t  metadata )

inline

Definition at line 353 of file profiler.h.

                                       {
    state_ = MetadataBits::update(metadata, state_);
  }

set_missing_frame_inserted()

void dart::Sample::set_missing_frame_inserted ( bool  missing_frame_inserted )

inline

Definition at line 296 of file profiler.h.

                                                               {
    state_ = MissingFrameInsertedBit::update(missing_frame_inserted, state_);
  }

set_thread_task()

void dart::Sample::set_thread_task ( Thread::TaskKind  task )

inline

Definition at line 324 of file profiler.h.

                                            {
    state_ = ThreadTaskBit::update(task, state_);
  }

set_truncated_trace()

void dart::Sample::set_truncated_trace ( bool  truncated_trace )

inline

Definition at line 302 of file profiler.h.

                                                 {
    state_ = TruncatedTraceBit::update(truncated_trace, state_);
  }

set_user_tag()

void dart::Sample::set_user_tag ( uword  tag )

inline

Definition at line 272 of file profiler.h.

{ user_tag_ = tag; }

set_vm_tag()

void dart::Sample::set_vm_tag ( uword  tag )

inline

Definition at line 266 of file profiler.h.

                             {
    ASSERT(tag != VMTag::kInvalidTagId);
    vm_tag_ = tag;
  }

SetAllocationCid()

void dart::Sample::SetAllocationCid ( intptr_t  cid )

inline

Definition at line 357 of file profiler.h.

                                      {
    set_is_allocation_sample(true);
    set_metadata(cid);
  }

SetAt()

void dart::Sample::SetAt ( intptr_t  i, uword  pc  )

inline

Definition at line 244 of file profiler.h.

                                   {
    ASSERT(i >= 0);
    ASSERT(i < kPCArraySizeInWords);
    pc_array_[i] = pc;
  }

SetContinuation()

void dart::Sample::SetContinuation ( Sample *  next )

inline

Definition at line 332 of file profiler.h.

                                     {
    ASSERT(!is_continuation_sample());
    ASSERT(next_ == nullptr);
    state_ = ContinuationSampleBit::update(true, state_);
    next_ = next;
  }

thread_task()

Thread::TaskKind dart::Sample::thread_task ( ) const

inline

Definition at line 322 of file profiler.h.

{ return ThreadTaskBit::decode(state_); }

tid()

ThreadId dart::Sample::tid ( ) const

inline

Definition at line 210 of file profiler.h.

{ return tid_; }

timestamp()

int64_t dart::Sample::timestamp ( ) const

inline

Definition at line 231 of file profiler.h.

{ return timestamp_; }

truncated_trace()

bool dart::Sample::truncated_trace ( ) const

inline

Definition at line 300 of file profiler.h.

{ return TruncatedTraceBit::decode(state_); }

user_tag()

uword dart::Sample::user_tag ( ) const

inline

Definition at line 271 of file profiler.h.

{ return user_tag_; }

vm_tag()

uword dart::Sample::vm_tag ( ) const

inline

Definition at line 265 of file profiler.h.

{ return vm_tag_; }

Member Data Documentation

kPCArraySizeInWords

constexpr int dart::Sample::kPCArraySizeInWords = 32

staticconstexpr

Definition at line 362 of file profiler.h.

kStackBufferSizeInWords

constexpr int dart::Sample::kStackBufferSizeInWords = 2

staticconstexpr

Definition at line 365 of file profiler.h.

---

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

• third_party/dart-lang/sdk/runtime/vm/profiler.h