Mercurial > octave-dspies
view liboctave/util/oct-mutex.h @ 19010:3fb030666878 draft default tip dspies
Added special-case logical-indexing function
* logical-index.h (New file) : Logical-indexing function. May be called on
octave_value types via call_bool_index
* nz-iterators.h : Add base-class nz_iterator for iterator types. Array has
template bool for whether to internally store row-col or compute on the fly
Add skip_ahead method which skips forward to the next nonzero after its
argument
Add flat_index for computing octave_idx_type index of current position (with
assertion failure in the case of overflow)
Move is_zero to separate file
* ov-base-diag.cc, ov-base-mat.cc, ov-base-sparse.cc, ov-perm.cc
(do_index_op): Add call to call_bool_index in logical-index.h
* Array.h : Move forward-declaration for array_iterator to separate header file
* dim-vector.cc (dim_max): Refers to idx-bounds.h (max_idx)
* array-iter-decl.h (New file): Header file for forward declaration of
array-iterator
* direction.h : Add constants fdirc and bdirc to avoid having to reconstruct
them
* dv-utils.h, dv-utils.cc (New files) :
Utility functions for querying and constructing dim-vectors
* idx-bounds.h (New file) :
Utility constants and functions for determining whether things will overflow
the maximum allowed bounds
* interp-idx.h (New function : to_flat_idx) : Converts row-col pair to linear
index of octave_idx_type
* is-zero.h (New file) : Function for determining whether an element is zero
* logical-index.tst : Add tests for correct return-value dimensions and large
sparse matrix behavior
author | David Spies <dnspies@gmail.com> |
---|---|
date | Fri, 25 Jul 2014 13:39:31 -0600 |
parents | ebb3ef964372 |
children |
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/* Copyright (C) 2008-2013 Michael Goffioul This file is part of Octave. Octave is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. Octave is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Octave; see the file COPYING. If not, see <http://www.gnu.org/licenses/>. */ #if !defined (octave_oct_mutex_h) #define octave_oct_mutex_h 1 #include "oct-refcount.h" class octave_mutex; class octave_base_mutex { public: friend class octave_mutex; octave_base_mutex (void) : count (1) { } virtual ~octave_base_mutex (void) { } virtual void lock (void); virtual void unlock (void); virtual bool try_lock (void); private: octave_refcount<int> count; }; class OCTAVE_API octave_mutex { public: octave_mutex (void); octave_mutex (const octave_mutex& m) : rep (m.rep) { rep->count++; } ~octave_mutex (void) { if (--rep->count == 0) delete rep; } octave_mutex& operator = (const octave_mutex& m) { if (rep != m.rep) { if (--rep->count == 0) delete rep; rep = m.rep; rep->count++; } return *this; } void lock (void) { rep->lock (); } void unlock (void) { rep->unlock (); } bool try_lock (void) { return rep->try_lock (); } protected: octave_base_mutex *rep; }; class octave_autolock { public: octave_autolock (const octave_mutex& m, bool block = true) : mutex (m), lock_result (false) { if (block) { mutex.lock (); lock_result = true; } else lock_result = mutex.try_lock (); } ~octave_autolock (void) { if (lock_result) mutex.unlock (); } bool ok (void) const { return lock_result; } operator bool (void) const { return ok (); } private: // No copying or default constructor! octave_autolock (void); octave_autolock (const octave_autolock&); octave_autolock& operator = (const octave_autolock&); private: octave_mutex mutex; bool lock_result; }; class OCTAVE_API octave_thread { public: static void init (void); static bool is_octave_thread (void); }; #endif