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comparison libinterp/corefcn/oct-stream.h @ 17416:6690dba6078a

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improve efficiency of fwrite * oct-stream.h, oct-stream.cc (write_int, do_write): Delete. (convert_ints, convert_data, octave_stream::write_bytes octave_stream::skip_bytes): New functions. (octave_stream::write): Improve efficiency by writing data in larger chunks. * oct-stream.cc: Delete unnecessary template instantiations. * data-conv.h, data-conv.cc (is_equivalent_type): New template. Provide specializations for core Octave data types. (oct_data_conv::data_type_size): New function. (oct_data_conv::data_type_to_string): Correct spelling of unsigned.
author John W. Eaton <jwe@octave.org>
date Fri, 13 Sep 2013 23:31:11 -0400
parents 68fc671a9339
children 669ad11f282d
comparison
equal deleted inserted replaced
17415:3856298f1ff8 17416:6690dba6078a
35 35
36 #include "Array.h" 36 #include "Array.h"
37 #include "data-conv.h" 37 #include "data-conv.h"
38 #include "lo-utils.h" 38 #include "lo-utils.h"
39 #include "mach-info.h" 39 #include "mach-info.h"
40 #include "oct-locbuf.h"
40 #include "oct-refcount.h" 41 #include "oct-refcount.h"
41 42
42 class 43 class
43 OCTINTERP_API 44 OCTINTERP_API
44 scanf_format_elt 45 scanf_format_elt
537 oct_data_conv::data_type output_type, 538 oct_data_conv::data_type output_type,
538 octave_idx_type skip, oct_mach_info::float_format flt_fmt, 539 octave_idx_type skip, oct_mach_info::float_format flt_fmt,
539 octave_idx_type& count); 540 octave_idx_type& count);
540 541
541 octave_idx_type write (const octave_value& data, octave_idx_type block_size, 542 octave_idx_type write (const octave_value& data, octave_idx_type block_size,
542 oct_data_conv::data_type output_type, 543 oct_data_conv::data_type output_type,
543 octave_idx_type skip, oct_mach_info::float_format flt_fmt); 544 octave_idx_type skip,
545 oct_mach_info::float_format flt_fmt);
546
547 bool write_bytes (const void *data, size_t n_elts);
548
549 bool skip_bytes (size_t n_elts);
544 550
545 template <class T> 551 template <class T>
546 octave_idx_type write (const Array<T>&, octave_idx_type block_size, 552 octave_idx_type write (const Array<T>& data, octave_idx_type block_size,
547 oct_data_conv::data_type output_type, 553 oct_data_conv::data_type output_type,
548 octave_idx_type skip, oct_mach_info::float_format flt_fmt); 554 octave_idx_type skip,
555 oct_mach_info::float_format flt_fmt);
549 556
550 octave_value scanf (const std::string& fmt, const Array<double>& size, 557 octave_value scanf (const std::string& fmt, const Array<double>& size,
551 octave_idx_type& count, const std::string& who /* = "scanf" */); 558 octave_idx_type& count, const std::string& who /* = "scanf" */);
552 559
553 octave_value scanf (const octave_value& fmt, const Array<double>& size, 560 octave_value scanf (const octave_value& fmt, const Array<double>& size,