C++ caml_copy_int64函数代码示例

value onlyWin32_getFileInformationByHandle_ml(value handle_v)
{
  HANDLE handle = (HANDLE)handle_v;
  BY_HANDLE_FILE_INFORMATION fileInfo;
  CAMLparam0 ();
  CAMLlocal1 (v);
  ULARGE_INTEGER size, index;

  if( !GetFileInformationByHandle(handle, &fileInfo) ){
    DWORD err = GetLastError();
    win32_maperr(err);
    uerror("GetFileInformationByHandle", Nothing);
  }

  size.HighPart = fileInfo.nFileSizeHigh;
  size.LowPart = fileInfo.nFileSizeLow;
  index.HighPart = fileInfo.nFileIndexHigh;
  index.LowPart = fileInfo.nFileIndexLow;

  v = caml_alloc (8, 0);
  Store_field(v,0, Val_int(fileInfo.dwFileAttributes));
  Store_field(v, 1,
              caml_copy_double(FileTime_to_POSIX(fileInfo.ftCreationTime)));
  Store_field(v, 2,
              caml_copy_double(FileTime_to_POSIX(fileInfo.ftLastAccessTime)));
  Store_field(v, 3,
              caml_copy_double(FileTime_to_POSIX(fileInfo.ftLastWriteTime)));
  Store_field(v, 4, Val_int(fileInfo.dwVolumeSerialNumber));
  Store_field(v, 5, caml_copy_int64(size.QuadPart));
  Store_field(v, 6, Val_int(fileInfo.nNumberOfLinks));
  Store_field(v, 7, caml_copy_int64(index.QuadPart));

  CAMLreturn (v);
}

static void stub_xtl_ocaml_progress(struct xentoollog_logger *logger,
	const char *context,
	const char *doing_what /* no \r,\n */,
	int percent, unsigned long done, unsigned long total)
{
	caml_leave_blocking_section();
	CAMLparam0();
	CAMLlocalN(args, 5);
	struct caml_xtl *xtl = (struct caml_xtl*)logger;
	value *func = caml_named_value(xtl->progress_cb) ;

	if (func == NULL)
		caml_raise_sys_error(caml_copy_string("Unable to find callback"));

	/* progress : string option -> string -> int -> int64 -> int64 -> unit; */
	args[0] = Val_context(context);
	args[1] = caml_copy_string(doing_what);
	args[2] = Val_int(percent);
	args[3] = caml_copy_int64(done);
	args[4] = caml_copy_int64(total);

	caml_callbackN(*func, 5, args);
	CAMLdone;
	caml_enter_blocking_section();
}

static value Val_physinfo(libxl_physinfo *c_val)
{
	CAMLparam0();
	CAMLlocal2(v, hwcap);
	int i;

	hwcap = caml_alloc_tuple(8);
	for (i = 0; i < 8; i++)
		Store_field(hwcap, i, caml_copy_int32(c_val->hw_cap[i]));

	v = caml_alloc_tuple(11);
	Store_field(v, 0, Val_int(c_val->threads_per_core));
	Store_field(v, 1, Val_int(c_val->cores_per_socket));
	Store_field(v, 2, Val_int(c_val->max_cpu_id));
	Store_field(v, 3, Val_int(c_val->nr_cpus));
	Store_field(v, 4, Val_int(c_val->cpu_khz));
	Store_field(v, 5, caml_copy_int64(c_val->total_pages));
	Store_field(v, 6, caml_copy_int64(c_val->free_pages));
	Store_field(v, 7, caml_copy_int64(c_val->scrub_pages));
	Store_field(v, 8, Val_int(c_val->nr_nodes));
	Store_field(v, 9, hwcap);
	Store_field(v, 10, caml_copy_int32(c_val->phys_cap));

	CAMLreturn(v);
}

value get_section_data_internal( bhp _p )
{
    CAMLparam0();
    CAMLlocal4( data, v, str, tupl );

    bh* p = (bh*) _p;
    struct bfd* abfd = p->bfdp;
    asection *sect;
    bfd_size_type datasize = 0;

    data = Val_emptylist;

    if ( p->is_from_file ) {

        for ( sect = abfd->sections; sect != NULL; sect = sect->next ) {
            datasize = bfd_get_section_size( sect );
            str = caml_alloc_string( datasize );
            bfd_get_section_contents( abfd, sect,
                                      (bfd_byte*)String_val(str),
                                      0, datasize );
            tupl = caml_alloc_tuple( 3 );
            Store_field( tupl, 0, str );
            Store_field( tupl, 1, caml_copy_int64( sect->vma ) );
            Store_field( tupl, 2, caml_copy_int64( sect->vma + datasize ) );
            v = caml_alloc_small( 2, 0 );
            Field( v, 0 ) = tupl;
            Field( v, 1 ) = data;
            data = v;
        }

    }

    CAMLreturn( data );
}

CAMLprim value stub_get_blktap3_stats(value filename)
{

	CAMLparam1(filename);
	CAMLlocal1(stats);

	FILE *c_fd;
	struct stats c_stats;

	c_fd = fopen(String_val(filename), "rb");

	if (!c_fd) uerror("fopen", Nothing);
	if (fread(&c_stats, sizeof(struct stats), 1, c_fd) < 1) uerror("fread", Nothing);

	stats = caml_alloc_tuple(10);

	Store_field(stats, 0, caml_copy_int64((int64_t) c_stats.read_reqs_submitted));
	Store_field(stats, 1, caml_copy_int64((int64_t) c_stats.read_reqs_completed));
	Store_field(stats, 2, caml_copy_int64((int64_t) c_stats.read_sectors));
	Store_field(stats, 3, caml_copy_int64((int64_t) c_stats.read_total_ticks));
	Store_field(stats, 4, caml_copy_int64((int64_t) c_stats.write_reqs_submitted));
	Store_field(stats, 5, caml_copy_int64((int64_t) c_stats.write_reqs_completed));
	Store_field(stats, 6, caml_copy_int64((int64_t) c_stats.write_sectors));
	Store_field(stats, 7, caml_copy_int64((int64_t) c_stats.write_total_ticks));
	Store_field(stats, 8, caml_copy_int64((int64_t) c_stats.io_errors));
	if ((c_stats.flags) & BT3_LOW_MEMORY_MODE)
		Store_field(stats, 9, Val_true);
	else
		Store_field(stats, 9, Val_false);

	fclose(c_fd);

	CAMLreturn(stats);

}

CAMLprim value caml_int64_mod(value v1, value v2)
{
  int64 dividend = Int64_val(v1);
  int64 divisor = Int64_val(v2);
  if (I64_is_zero(divisor)) caml_raise_zero_divide();
  /* PR#4740: on some processors, division crashes on overflow.
     Implement the same behavior as for type "int". */
  if (I64_is_min_int(dividend) && I64_is_minus_one(divisor)) {
    int64 zero = I64_literal(0,0);
    return caml_copy_int64(zero);
  }
  return caml_copy_int64(I64_mod(Int64_val(v1), divisor));
}

CAMLexport value caml_Val_file_offset(file_offset fofs)
{
  int64 ofs;
  ofs.l = fofs;
  ofs.h = 0;
  return caml_copy_int64(ofs);
}

CAMLprim value brlapiml_waitKey(value handle, value unit)
{
  CAMLparam2(handle, unit);
  brlapi_keyCode_t keyCode;
  brlapiCheckError(readKey, 1, &keyCode);
  CAMLreturn(caml_copy_int64(keyCode));
}

CAMLprim value caml_int64_of_string(value s)
{
  char * p;
  uint64 max_uint64 = I64_literal(0xFFFFFFFF, 0xFFFFFFFF);
  uint64 max_int64  = I64_literal(0x80000000, 0x00000000);
  uint64 res, threshold;
  int sign, base, d;

  p = parse_sign_and_base(String_val(s), &base, &sign);
  I64_udivmod(max_uint64, I64_of_int32(base), &threshold, &res);
  d = parse_digit(*p);
  if (d < 0 || d >= base) caml_failwith("int_of_string");
  res = I64_of_int32(d);
  for (p++; /*nothing*/; p++) {
    char c = *p;
    if (c == '_') continue;
    d = parse_digit(c);
    if (d < 0 || d >= base) break;
    /* Detect overflow in multiplication base * res */
    if (I64_ult(threshold, res)) caml_failwith("int_of_string");
    res = I64_add(I64_mul(I64_of_int32(base), res), I64_of_int32(d));
    /* Detect overflow in addition (base * res) + d */
    if (I64_ult(res, I64_of_int32(d))) caml_failwith("int_of_string");
  }
  if (p != String_val(s) + caml_string_length(s)){
    caml_failwith("int_of_string");
  }
  if (base == 10 && I64_ult(max_int64, res)) caml_failwith("int_of_string");
  if (sign < 0) res = I64_neg(res);
  return caml_copy_int64(res);
}

CAMLprim value stub_sendfile64(value in_fd, value out_fd, value len){
  CAMLparam3(in_fd, out_fd, len);
  CAMLlocal1(result);
  size_t c_len = Int64_val(len);
  size_t bytes;
  int c_in_fd = Int_val(in_fd);
  int c_out_fd = Int_val(out_fd);

  int rc = NOT_IMPLEMENTED;

  enter_blocking_section();

#ifdef __linux__
  rc = TRIED_AND_FAILED;
  bytes = sendfile(c_out_fd, c_in_fd, NULL, c_len);
  if (bytes != -1) rc = OK;
#endif

  leave_blocking_section();

  switch (rc) {
    case NOT_IMPLEMENTED:
      caml_failwith("This platform does not support sendfile()");
      break;
    case TRIED_AND_FAILED:
      uerror("sendfile", Nothing);
      break;
    default: break;
  }
  result = caml_copy_int64(bytes);
  CAMLreturn(result);
}

value caml_query_performance_frequency() {
    LARGE_INTEGER freq;
    if (!QueryPerformanceFrequency(&freq)) {
        caml_failwith("QueryPerformanceFrequency");
        return 0;
    }
    return caml_copy_int64(freq.QuadPart);
}

value caml_query_performance_counter() {
    LARGE_INTEGER count;
    if (!QueryPerformanceCounter(&count)) {
        caml_failwith("QueryPerformanceCounter");
        return 0;
    }
    return caml_copy_int64(count.QuadPart);
}

CAMLprim value stub_xenctrlext_get_runstate_info(value xch, value domid)
{
	CAMLparam2(xch, domid);
#if defined(XENCTRL_HAS_GET_RUNSTATE_INFO)
	CAMLlocal1(result);
	xc_runstate_info_t info;
	int retval;

	retval = xc_get_runstate_info(_H(xch), _D(domid), &info);
	if (retval < 0)
		failwith_xc(_H(xch));

	/* Store
	   0 : state (int32)
	   1 : missed_changes (int32)
	   2 : state_entry_time (int64)
	   3-8 : times (int64s)
	*/
	result = caml_alloc_tuple(9);
	Store_field(result, 0, caml_copy_int32(info.state));
	Store_field(result, 1, caml_copy_int32(info.missed_changes));
	Store_field(result, 2, caml_copy_int64(info.state_entry_time));
	Store_field(result, 3, caml_copy_int64(info.time[0]));
	Store_field(result, 4, caml_copy_int64(info.time[1]));
	Store_field(result, 5, caml_copy_int64(info.time[2]));
	Store_field(result, 6, caml_copy_int64(info.time[3]));
	Store_field(result, 7, caml_copy_int64(info.time[4]));
	Store_field(result, 8, caml_copy_int64(info.time[5]));

	CAMLreturn(result);
#else
	caml_failwith("XENCTRL_HAS_GET_RUNSTATE_INFO not defined");
#endif
}

CAMLprim value
caml_get_addr(value page)
{
  CAMLparam1(page);
  CAMLlocal1(int64);
  void *data = Caml_ba_data_val(page);
  int64 = caml_copy_int64((uint64_t) data);
  CAMLreturn(int64);
}

paranode mk_int64_paranode(int64_t l, source_info_t *src_info) {
  CAMLparam0();
  CAMLlocal1(val);

  val = caml_alloc(1, PARNUM_INT64);
  Store_field(val, 0, caml_copy_int64(l));

  CAMLreturnT(paranode, mk_num(val, src_info));
}