dart::bin::IOBuffer Class Reference

#include <io_buffer.h>

Static Public Member Functions
static Dart_Handle	Allocate (intptr_t size, uint8_t **buffer)
static uint8_t *	Allocate (intptr_t size)
static uint8_t *	Reallocate (uint8_t *buffer, intptr_t new_size)
static void	Free (void *buffer)
static void	Finalizer (void *isolate_callback_data, void *buffer)

Detailed Description

Definition at line 14 of file io_buffer.h.

Member Function Documentation

Allocate() [1/2]

uint8_t * dart::bin::IOBuffer::Allocate ( intptr_t  size )

static

Definition at line 30 of file io_buffer.cc.

                                         {
  return static_cast<uint8_t*>(calloc(size, sizeof(uint8_t)));
}

Allocate() [2/2]

Dart_Handle dart::bin::IOBuffer::Allocate ( intptr_t  size, uint8_t **  buffer  )

static

Definition at line 12 of file io_buffer.cc.

                                                              {
  uint8_t* data = Allocate(size);
  if (data == nullptr) {
    return Dart_Null();
  }
  Dart_Handle result = Dart_NewExternalTypedDataWithFinalizer(
      Dart_TypedData_kUint8, data, size, data, size, IOBuffer::Finalizer);
 
  if (Dart_IsError(result)) {
    Free(data);
    Dart_PropagateError(result);
  }
  if (buffer != nullptr) {
    *buffer = data;
  }
  return result;
}

Finalizer()

static void dart::bin::IOBuffer::Finalizer ( void *  isolate_callback_data, void *  buffer  )

inlinestatic

Definition at line 31 of file io_buffer.h.

                                                                   {
    Free(buffer);
  }

Free()

static void dart::bin::IOBuffer::Free ( void *  buffer )

inlinestatic

Definition at line 28 of file io_buffer.h.

{ free(buffer); }

Reallocate()

uint8_t * dart::bin::IOBuffer::Reallocate ( uint8_t *  buffer, intptr_t  new_size  )

static

Definition at line 34 of file io_buffer.cc.

                                                                {
  // It seems windows realloc() and glibc relloc() don't free memory when
  // shrinking, so we'll manually allocate a new buffer, copy the data and free
  // the old buffer. This also avoids a corner case if the new size is 0:
  // It can return `nullptr` in that case even though `malloc(0)` would
  // return a unique non-`nullptr` value.
  auto new_buffer = IOBuffer::Allocate(new_size);
  if (new_buffer != nullptr) {
    memmove(new_buffer, buffer, new_size);
    free(buffer);
    return static_cast<uint8_t*>(new_buffer);
  }
  return static_cast<uint8_t*>(realloc(buffer, new_size));
}

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

• third_party/dart-lang/sdk/runtime/bin/io_buffer.h
• third_party/dart-lang/sdk/runtime/bin/io_buffer.cc