dart::Zone Class Reference

#include <unit_test_custom_zone.h>

Classes
class	Segment

Public Member Functions
	Zone ()
	~Zone ()
template<class ElementType >
ElementType *	Alloc (intptr_t length)
template<class ElementType >
ElementType *	Realloc (ElementType *old_array, intptr_t old_length, intptr_t new_length)
template<class ElementType >
void	Free (ElementType *old_array, intptr_t len)
void *	AllocUnsafe (intptr_t size)
template<class ElementType >
ElementType *	Alloc (intptr_t len)
template<class ElementType >
ElementType *	Realloc (ElementType *old_array, intptr_t old_len, intptr_t new_len)
uword	AllocUnsafe (intptr_t size)
char *	MakeCopyOfString (const char *str)
char *	MakeCopyOfStringN (const char *str, intptr_t len)
char *	ConcatStrings (const char *a, const char *b, char join=',')
char *	PrintToString (const char *format,...) PRINTF_ATTRIBUTE(2
char char *	VPrint (const char *format, va_list args)
uintptr_t	SizeInBytes () const
uintptr_t	CapacityInBytes () const
void	Print () const
VMHandles *	handles ()
void	VisitObjectPointers (ObjectPointerVisitor *visitor)
Zone *	previous () const
bool	ContainsNestedZone (Zone *other) const

Static Public Member Functions
static void	Init ()
static void	Cleanup ()
static void	ClearCache ()
static intptr_t	Size ()

Static Public Attributes
static constexpr intptr_t	kAlignment = kDoubleSize

Friends
class	StackZone
class	ApiZone
class	AllocOnlyStackZone
template<typename T , typename B , typename Allocator >
class	BaseGrowableArray
template<typename T , typename B , typename Allocator >
class	BaseDirectChainedHashMap

Detailed Description

Definition at line 19 of file unit_test_custom_zone.h.

Constructor & Destructor Documentation

Zone()

dart::Zone::Zone ( )

inline

Definition at line 21 of file unit_test_custom_zone.h.

{}

~Zone()

dart::Zone::~Zone

(

)

Definition at line 22 of file unit_test_custom_zone.cc.

            {
  while (buffers_.size() > 0) {
    free(buffers_.back());
    buffers_.pop_back();
  }
}

Member Function Documentation

Alloc() [1/2]

template<class ElementType >

ElementType * dart::Zone::Alloc ( intptr_t  len )

inline

Alloc() [2/2]

template<class ElementType >

ElementType * dart::Zone::Alloc ( intptr_t  length )

inline

Definition at line 25 of file unit_test_custom_zone.h.

                                             {
    return static_cast<ElementType*>(AllocUnsafe(sizeof(ElementType) * length));
  }

AllocUnsafe() [1/2]

uword dart::Zone::AllocUnsafe ( intptr_t  size )

inline

Definition at line 29 of file unit_test_custom_zone.cc.

                                     {
  void* memory = malloc(size);
  buffers_.push_back(memory);
  return memory;
}

AllocUnsafe() [2/2]

uword dart::Zone::AllocUnsafe ( intptr_t  size )

inline

CapacityInBytes()

uintptr_t dart::Zone::CapacityInBytes

(

)

const

Definition at line 186 of file zone.cc.

                                      {
  uintptr_t size = kInitialChunkSize;
  for (Segment* s = segments_; s != nullptr; s = s->next()) {
    size += s->size();
  }
  return size;
}

Cleanup()

void dart::Zone::Cleanup ( )

static

Definition at line 63 of file zone.cc.

                   {
  ClearCache();
  delete segment_cache_mutex;
  segment_cache_mutex = nullptr;
}

ClearCache()

void dart::Zone::ClearCache ( )

static

Definition at line 69 of file zone.cc.

                      {
  MutexLocker ml(segment_cache_mutex);
  ASSERT(segment_cache_size >= 0);
  ASSERT(segment_cache_size <= kSegmentCacheCapacity);
  while (segment_cache_size > 0) {
    delete segment_cache[--segment_cache_size];
  }
}

ConcatStrings()

char * dart::Zone::ConcatStrings	(	const char *	a,
		const char *	b,
		char	join = ','
	)

Definition at line 291 of file zone.cc.

                                                                 {
  intptr_t a_len = (a == nullptr) ? 0 : strlen(a);
  const intptr_t b_len = strlen(b) + 1;  // '\0'-terminated.
  const intptr_t len = a_len + b_len;
  char* copy = Alloc<char>(len);
  if (a_len > 0) {
    strncpy(copy, a, a_len);
    // Insert join character.
    copy[a_len++] = join;
  }
  strncpy(&copy[a_len], b, b_len);
  return copy;
}

ContainsNestedZone()

bool dart::Zone::ContainsNestedZone ( Zone *  other ) const

inline

Definition at line 79 of file zone.h.

                                             {
    while (other != nullptr) {
      if (this == other) return true;
      other = other->previous_;
    }
    return false;
  }

Free()

template<class ElementType >

void dart::Zone::Free ( ElementType *  old_array, intptr_t  len  )

inline

Definition at line 39 of file unit_test_custom_zone.h.

{}

handles()

VMHandles * dart::Zone::handles ( )

inline

Definition at line 73 of file zone.h.

{ return &handles_; }

Init()

void dart::Zone::Init ( )

static

Definition at line 58 of file zone.cc.

                {
  ASSERT(segment_cache_mutex == nullptr);
  segment_cache_mutex = new Mutex(NOT_IN_PRODUCT("segment_cache_mutex"));
}

MakeCopyOfString()

char * dart::Zone::MakeCopyOfString

(

const char *

str

)

Definition at line 270 of file zone.cc.

                                            {
  intptr_t len = strlen(str) + 1;  // '\0'-terminated.
  char* copy = Alloc<char>(len);
  strncpy(copy, str, len);
  return copy;
}

MakeCopyOfStringN()

char * dart::Zone::MakeCopyOfStringN	(	const char *	str,
		intptr_t	len
	)

Definition at line 277 of file zone.cc.

                                                           {
  ASSERT(len >= 0);
  for (intptr_t i = 0; i < len; i++) {
    if (str[i] == '\0') {
      len = i;
      break;
    }
  }
  char* copy = Alloc<char>(len + 1);  // +1 for '\0'
  strncpy(copy, str, len);
  copy[len] = '\0';
  return copy;
}

previous()

Zone * dart::Zone::previous ( ) const

inline

Definition at line 77 of file zone.h.

{ return previous_; }

Print()

void dart::Zone::Print

(

)

const

Definition at line 194 of file zone.cc.

                       {
  intptr_t segment_size = CapacityInBytes();
  intptr_t scoped_handle_size = handles_.ScopedHandlesCapacityInBytes();
  intptr_t zone_handle_size = handles_.ZoneHandlesCapacityInBytes();
  intptr_t total_size = segment_size + scoped_handle_size + zone_handle_size;
  OS::PrintErr("Zone(%p, segments: %" Pd ", scoped_handles: %" Pd
               ", zone_handles: %" Pd ", total: %" Pd ")\n",
               this, segment_size, scoped_handle_size, zone_handle_size,
               total_size);
}

PrintToString()

char * dart::Zone::PrintToString	(	const char *	format,
			...
	)

Definition at line 313 of file zone.cc.

                                                 {
  va_list args;
  va_start(args, format);
  char* buffer = OS::VSCreate(this, format, args);
  va_end(args);
  return buffer;
}

Realloc() [1/2]

template<class ElementType >

ElementType * dart::Zone::Realloc ( ElementType *  old_array, intptr_t  old_len, intptr_t  new_len  )

inline

Realloc() [2/2]

template<class ElementType >

ElementType * dart::Zone::Realloc ( ElementType *  old_array, intptr_t  old_length, intptr_t  new_length  )

inline

Definition at line 30 of file unit_test_custom_zone.h.

                                                   {
    void* memory = AllocUnsafe(sizeof(ElementType) * new_length);
    memmove(memory, old_array, sizeof(ElementType) * old_length);
    return static_cast<ElementType*>(memory);
  }

Size()

static intptr_t dart::Zone::Size ( )

inlinestatic

Definition at line 94 of file zone.h.

{ return total_size_; }

SizeInBytes()

uintptr_t dart::Zone::SizeInBytes

(

)

const

Definition at line 182 of file zone.cc.

                                  {
  return size_;
}

VisitObjectPointers()

void dart::Zone::VisitObjectPointers

(

ObjectPointerVisitor *

visitor

)

Definition at line 305 of file zone.cc.

                                                            {
  Zone* zone = this;
  while (zone != nullptr) {
    zone->handles()->VisitObjectPointers(visitor);
    zone = zone->previous_;
  }
}

VPrint()

char * dart::Zone::VPrint	(	const char *	format,
		va_list	args
	)

Definition at line 321 of file zone.cc.

                                                   {
  return OS::VSCreate(this, format, args);
}

Friends And Related Function Documentation

AllocOnlyStackZone

friend class AllocOnlyStackZone

friend

Definition at line 179 of file zone.h.

ApiZone

friend class ApiZone

friend

Definition at line 178 of file zone.h.

BaseDirectChainedHashMap

template<typename T , typename B , typename Allocator >

friend class BaseDirectChainedHashMap

friend

Definition at line 183 of file zone.h.

BaseGrowableArray

template<typename T , typename B , typename Allocator >

friend class BaseGrowableArray

friend

Definition at line 181 of file zone.h.

StackZone

friend class StackZone

friend

Definition at line 177 of file zone.h.

Member Data Documentation

kAlignment

constexpr intptr_t dart::Zone::kAlignment = kDoubleSize

staticconstexpr

Definition at line 88 of file zone.h.

---

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

• third_party/dart-lang/sdk/runtime/vm/compiler/ffi/unit_test_custom_zone.h
• third_party/dart-lang/sdk/runtime/vm/zone.h
• third_party/dart-lang/sdk/runtime/vm/compiler/ffi/unit_test_custom_zone.cc
• third_party/dart-lang/sdk/runtime/vm/zone.cc