v8::StartupDataDecompressor Class Reference

A helper class for driving V8 startup data decompression. More...

#include <v8.h>

Collaboration diagram for v8::StartupDataDecompressor:

Public Member Functions
	StartupDataDecompressor ()
virtual	~StartupDataDecompressor ()
int	Decompress ()

Protected Member Functions
virtual int	DecompressData (char *raw_data, int *raw_data_size, const char *compressed_data, int compressed_data_size)=0

Private Attributes
char **	raw_data

Detailed Description

A helper class for driving V8 startup data decompression.

It is based on "CompressedStartupData" API functions from the V8 class. It isn't mandatory for an embedder to use this class, instead, API functions can be used directly.

For an example of the class usage, see the "shell.cc" sample application.

Definition at line 4899 of file v8.h.

Constructor & Destructor Documentation

StartupDataDecompressor()

v8::StartupDataDecompressor::StartupDataDecompressor

(

)

Definition at line 205 of file api.cc.

    : raw_data(i::NewArray<char*>(V8::GetCompressedStartupDataCount())) {
  for (int i = 0; i < V8::GetCompressedStartupDataCount(); ++i) {
    raw_data[i] = NULL;
  }
}

References v8::V8::GetCompressedStartupDataCount(), NULL, and raw_data.

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~StartupDataDecompressor()

v8::StartupDataDecompressor::~StartupDataDecompressor ( )

virtual

Definition at line 213 of file api.cc.

                                                  {
  for (int i = 0; i < V8::GetCompressedStartupDataCount(); ++i) {
    i::DeleteArray(raw_data[i]);
  }
  i::DeleteArray(raw_data);
}

References v8::internal::DeleteArray(), v8::V8::GetCompressedStartupDataCount(), and raw_data.

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Member Function Documentation

Decompress()

int v8::StartupDataDecompressor::Decompress

(

)

Definition at line 221 of file api.cc.

                                        {
  int compressed_data_count = V8::GetCompressedStartupDataCount();
  StartupData* compressed_data =
      i::NewArray<StartupData>(compressed_data_count);
  V8::GetCompressedStartupData(compressed_data);
  for (int i = 0; i < compressed_data_count; ++i) {
    char* decompressed = raw_data[i] =
        i::NewArray<char>(compressed_data[i].raw_size);
    if (compressed_data[i].compressed_size != 0) {
      int result = DecompressData(decompressed,
                                  &compressed_data[i].raw_size,
                                  compressed_data[i].data,
                                  compressed_data[i].compressed_size);
      if (result != 0) return result;
    } else {
      DCHECK_EQ(0, compressed_data[i].raw_size);
    }
    compressed_data[i].data = decompressed;
  }
  V8::SetDecompressedStartupData(compressed_data);
  i::DeleteArray(compressed_data);
  return 0;
}

References v8::StartupData::data, DCHECK_EQ, DecompressData(), v8::internal::DeleteArray(), v8::V8::GetCompressedStartupData(), v8::V8::GetCompressedStartupDataCount(), raw_data, and v8::V8::SetDecompressedStartupData().

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DecompressData()

virtual int v8::StartupDataDecompressor::DecompressData ( char *  raw_data, int *  raw_data_size, const char *  compressed_data, int  compressed_data_size  )

protectedpure virtual

Referenced by Decompress().

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Member Data Documentation

raw_data

char** v8::StartupDataDecompressor::raw_data

private

Definition at line 4912 of file v8.h.

Referenced by Decompress(), StartupDataDecompressor(), and ~StartupDataDecompressor().

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

• /mnt/V8SourceCode/include/v8.h
• /mnt/V8SourceCode/src/api.cc