C++ data_size函数代码示例

void ciMethodData::print_data_on(outputStream* st) {
  ResourceMark rm;
  ciProfileData* data;
  for (data = first_data(); is_valid(data); data = next_data(data)) {
    st->print("%d", dp_to_di(data->dp()));
    st->fill_to(6);
    data->print_data_on(st);
  }
  st->print_cr("--- Extra data:");
  DataLayout* dp  = data_layout_at(data_size());
  DataLayout* end = data_layout_at(data_size() + extra_data_size());
  for (; dp < end; dp = methodDataOopDesc::next_extra(dp)) {
    if (dp->tag() == DataLayout::no_tag)  continue;
    if (dp->tag() == DataLayout::bit_data_tag) {
      data = new BitData(dp);
    } else {
      assert(dp->tag() == DataLayout::arg_info_data_tag, "must be BitData or ArgInfo");
      data = new ciArgInfoData(dp);
      dp = end; // ArgInfoData is at the end of extra data section.
    }
    st->print("%d", dp_to_di(data->dp()));
    st->fill_to(6);
    data->print_data_on(st);
  }
}

void mc146818_device::nvram_default()
{
	// populate from a memory region if present
	if (m_region != NULL)
	{
		UINT32 bytes = m_region->bytes();

		if (bytes > data_size())
			bytes = data_size();

		memcpy(&m_data[0], m_region->base(), bytes);
	}
	else
	{
		memset(&m_data[0], 0, data_size());
	}

	if(m_binary)
		m_data[REG_B] |= REG_B_DM;
	if(m_hour)
		m_data[REG_B] |= REG_B_24_12;

	set_base_datetime();
	update_timer();
	update_irq();
}

// Translate a bci to its corresponding data, or NULL.
ciProfileData* ciMethodData::bci_to_data(int bci) {
  ciProfileData* data = data_before(bci);
  for ( ; is_valid(data); data = next_data(data)) {
    if (data->bci() == bci) {
      set_hint_di(dp_to_di(data->dp()));
      return data;
    } else if (data->bci() > bci) {
      break;
    }
  }
  // bci_to_extra_data(bci) ...
  DataLayout* dp  = data_layout_at(data_size());
  DataLayout* end = data_layout_at(data_size() + extra_data_size());
  for (; dp < end; dp = methodDataOopDesc::next_extra(dp)) {
    if (dp->tag() == DataLayout::no_tag) {
      _saw_free_extra_data = true;  // observed an empty slot (common case)
      return NULL;
    }
    if (dp->tag() == DataLayout::arg_info_data_tag) {
      break; // ArgInfoData is at the end of extra data section.
    }
    if (dp->bci() == bci) {
      assert(dp->tag() == DataLayout::bit_data_tag, "sane");
      return new ciBitData(dp);
    }
  }
  return NULL;
}

///////////////////////////////////////////////////////////////////////////////
//
// calculates the rate of change of e^2 with each parameter in 'p' at 'p'
// returning the result in 'deriv'.
//
// assumes e is up to date with p
// 
///////////////////////////////////////////////////////////////////////////////
void FSolver::df(VecDoub_I &p, VecDoub_O &deriv) {
  coord		etot(3);	// total error vector
  int		i,j,n;


  // std::cout << "in df" << std::endl;

  for(n=0; n<data_size(); ++n) {
    e[n] = 0.0;
    for(i=0; i<3; ++i) {
      for(j=0; j<3; ++j) {
	e[n] += qp[n][i] * p[3*i+j] * q[n][j];
      }
    }
  }


  for(i = 0; i<3; ++i) {
    for(j = 0; j<3; ++j) {
      deriv[3*i+j] = 0.0; 
      for(n=0; n<data_size(); ++n) {
	deriv[3*i+j] += 2.0 * e[n] * qp[n][i] * q[n][j];
      }
    }
  }

  // --- add scale forcing
  // ---------------------
  double t;
  t = 4.0*(p[2]*p[2] + p[5]*p[5] + p[8]*p[8] - 0.694722);
  deriv[2] += t*p[2];
  deriv[5] += t*p[5];
  deriv[8] += t*p[8];

  // --- add determinant forcing
  // ---------------------------
  /******
  t = 2.0*(p[0]*p[4]*p[8] + p[1]*p[5]*p[6] + p[2]*p[3]*p[7] -
    p[2]*p[4]*p[6] - p[1]*p[3]*p[8]  - p[0]*p[5]*p[7]);
  deriv[0] += t*(p[4]*p[8] - p[5]*p[7]);
  deriv[1] += t*(p[5]*p[6] - p[3]*p[8]);
  deriv[2] += t*(p[3]*p[7] - p[4]*p[6]);
  deriv[3] += t*(p[2]*p[7] - p[1]*p[8]);
  deriv[4] += t*(p[0]*p[8] - p[2]*p[6]);
  deriv[5] += t*(p[1]*p[6] - p[0]*p[7]);
  deriv[6] += t*(p[1]*p[5] - p[2]*p[4]);
  deriv[7] += t*(p[2]*p[3] - p[0]*p[5]);
  deriv[8] += t*(p[0]*p[4] - p[1]*p[3]);
  *****/

  /****
  for(n=0; n<deriv.size(); ++n) {
    std::cout << deriv[n] << " ";
  }
  std::cout << std::endl;
  ***/
}

ciArgInfoData *ciMethodData::arg_info() const {
  // Should be last, have to skip all traps.
  DataLayout* dp  = data_layout_at(data_size());
  DataLayout* end = data_layout_at(data_size() + extra_data_size());
  for (; dp < end; dp = methodDataOopDesc::next_extra(dp)) {
    if (dp->tag() == DataLayout::arg_info_data_tag)
      return new ciArgInfoData(dp);
  }
  return NULL;
}

void*data_calloc(ambixtest_presentationformat_t fmt, size_t nmembers) {
  size_t nmemb=nmembers*data_size(fmt)/sizeof(float64_t)+1;
  size_t size = sizeof(float64_t);
  void*data=calloc(nmemb, size);
  //printf("%dx%d[%d] allocated %d of %d bytes to %p\n", (int)frames, channels, fmt, (int)nmemb, (int)size, data);
  return data;
}

R_API struct r_anal_refline_t *r_anal_reflines_get(struct r_anal_t *anal,
	ut64 addr, ut8 *buf, ut64 len, int nlines, int linesout, int linescall)
{
	RAnalRefline *list2, *list = R_NEW (RAnalRefline);
	RAnalOp op = {0};
	ut8 *ptr = buf;
	ut8 *end = buf + len;
	ut64 opc = addr;
	int sz = 0, index = 0;

	INIT_LIST_HEAD (&(list->list));

	end -= 8; // XXX Fix some segfaults when r_anal backends are buggy
	/* analyze code block */
	while (ptr<end) {
		if (nlines != -1 && --nlines == 0)
			break;
#if 0
		if (config.interrupted)
			break;
		int dt = data_type(config.seek+bsz);
		if (dt != DATA_FUN && dt != DATA_CODE) {
			ut64 sz = data_size (config.seek+bsz);
			if (sz > 0) {
				ptr += sz;
				bsz += sz;
				continue;
			}
		}
#endif
		addr += sz;
		// This can segflauta if opcode length and buffer check fails
		r_anal_op_fini (&op);
		sz = r_anal_op (anal, &op, addr, ptr, (int)(end-ptr));
		if (sz > 0) {
			/* store data */
			switch (op.type) {
			case R_ANAL_OP_TYPE_CALL:
				if (!linescall)
					break;
			case R_ANAL_OP_TYPE_CJMP:
			case R_ANAL_OP_TYPE_JMP:
				if (!linesout && (op.jump > opc+len || op.jump < opc))
					goto __next;
				if (op.jump == 0LL)
					goto __next;
				list2 = R_NEW (RAnalRefline);
				list2->from = addr;
				list2->to = op.jump;
				list2->index = index++;
				list_add_tail (&(list2->list), &(list->list));
				break;
			}
		} else sz = 1;
	__next:
		ptr += sz;
	}
	r_anal_op_fini (&op);
	return list;
}

void Texture::assign(const Texture& t)
{
  _width = t._width;
  _height = t._height;
  init();
  memcpy(_data, t._data, data_size());
}

JNIEXPORT void JNICALL Java_edu_asu_sma_ContentHelper_create(JNIEnv* env,
                                                             jobject thiz,
                                                             jobjectArray jtypes,
                                                             jstring jname,
                                                             jbyteArray jdata,
                                                             jlong jsize)
{
  int types_count = env->GetArrayLength(jtypes);
  std::vector<sma::ContentType> types;

  for (std::size_t i = 0; i < types_count; ++i) {
    jstring j_stype = (jstring)env->GetObjectArrayElement(jtypes, i);
    char const* c_stype = env->GetStringUTFChars(j_stype, NULL);
    types.emplace_back(std::string(c_stype));
    env->ReleaseStringUTFChars(j_stype, c_stype);
  }

  char const* c_name = env->GetStringUTFChars(jname, NULL);
  std::string name(c_name);
  env->ReleaseStringUTFChars(jname, c_name);

  std::size_t data_size(jsize);
  std::uint8_t* data = new std::uint8_t[data_size];
  jbyte* c_data = env->GetByteArrayElements(jdata, NULL);
  std::memcpy(data, c_data, data_size);
  env->ReleaseByteArrayElements(jdata, c_data, JNI_ABORT);

  sma::content_helper->create_new(std::move(types), sma::ContentName(name), data, data_size);

  delete[] data;
}

int FileMapInfo::FileMapHeader::compute_crc() {
  char* header = data();
  // start computing from the field after _crc
  char* buf = (char*)&_crc + sizeof(int);
  size_t sz = data_size() - (buf - header);
  int crc = ClassLoader::crc32(0, buf, (jint)sz);
  return crc;
}

const Sector &Track::get_sector (const Header &header) const
{
	auto it = find(header);
	if (it == end() || it->data_size() < header.sector_size())
		throw util::exception(CylHead(header.cyl, header.head), " sector ", header.sector, " not found");

	return *it;
}

void mc146818_device::nvram_read(emu_file &file)
{
	file.read(m_data, data_size());

	set_base_datetime();
	update_timer();
	update_irq();
}

int main(int argc, char *argv[])
{			
	int choice = 1;

	choice = check_model();

	switch(choice) {
		//test the data size on kernel and application.
		case 1:
		{
			data_size(argc, argv);
			break;
		}

		//test the fasync signal handle method.
		case 2:
		{
			fasync_handle(argc, argv);
			break;
		}

		//test the input and output method by poll.
		case 3:
		{
			io_poll(argc, argv);
			break;
		}

		//test the concole which recv the kernel message.
		case 4:
		{
			concole_ctl(argc, argv);
			break;
		}

		//test the page difference by compared dev map addr.
		case 5:
		{
			mem_cmp(argc, argv);
			break;
		}

		//test the input and ouput on all dev ports.
		case 6:
		{
			port_io(argc, argv);
			break;
		}

		//default do nothing
		default:
		{
			break;
		}
	}
	
	return 0;
}

void MapBlock::copyFrom(VoxelManipulator &dst)
{
	v3s16 data_size(MAP_BLOCKSIZE, MAP_BLOCKSIZE, MAP_BLOCKSIZE);
	VoxelArea data_area(v3s16(0,0,0), data_size - v3s16(1,1,1));
	
	// Copy from VoxelManipulator to data
	dst.copyTo(data, data_area, v3s16(0,0,0),
			getPosRelative(), data_size);
}

void MeshMakeData::fillBlockData(const v3s16 &block_offset, MapNode *data)
{
	v3s16 data_size(MAP_BLOCKSIZE, MAP_BLOCKSIZE, MAP_BLOCKSIZE);
	VoxelArea data_area(v3s16(0,0,0), data_size - v3s16(1,1,1));

	v3s16 bp = m_blockpos + block_offset;
	v3s16 blockpos_nodes = bp * MAP_BLOCKSIZE;
	m_vmanip.copyFrom(data, data_area, v3s16(0,0,0), blockpos_nodes, data_size);
}