Mercurial > octave
view liboctave/util/oct-mutex.cc @ 21213:f7d1050b9b53
maint: Clean up various usages of #ifdef.
* randmtzig.c: Use #ifdef rather than just #if.
* EditControl.h : Use '#if ! defined' rather than '#ifndef' in
guard block to match Octave style.
* dialog.cc, settings-dialog.cc: Add FIXME notes about questionable use of #if
mechanism.
* file-editor-tab.cc, Array-b.cc, Array-ch.cc, Array-d.cc, Array-f.cc,
Array-i.cc, Array-s.cc, MatrixType.h, quit.h, lo-sysdep.cc, lo-cutils.c,
oct-alloc.h, oct-shlib.cc, sparse-sort.h: #define HAVE_XXX macros to 1, not
just empty but defined.
* octave-txt-lexer.h, octave-cmd.h, octave-preserve-stream-state.h, txt-eng.h,
zfstream.h, oct-conf-features.h, oct-conf.h: Use octave_ namespace prefix on
name of #define used to prevent multiple inclusion of headers.
* parser.h, webinfo.h, ov-oncleanup.h, op-int.h, display-available.h,
shared-fcns.h: Add #define guard to prevent multiple inclusion.
* quadcc.cc: use all capitals for #define MIN_CQUAD_HEAPSIZE.
* ov-intx.h: Add note that this file must not use guard #define.
* eigs-base.h, randmtzig.h: Write '! defined' rather than '!defined'.
* file-ops.cc, oct-sparse.h: Use parentheses around complex #if tests.
* oct-syscalls.cc, oct-base64.cc, statdefs.h: Indent #ifdef blocks correctly.
* oct-conf-post.in.h: Use "! defined". Define macros to 1, not just empty but
defined.
author | Rik <rik@octave.org> |
---|---|
date | Sat, 06 Feb 2016 18:22:32 -0800 |
parents | f7121e111991 |
children | 40de9f8f23a6 |
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/* Copyright (C) 2008-2015 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/>. */ #ifdef HAVE_CONFIG_H # include <config.h> #endif #include "oct-mutex.h" #include "lo-error.h" #if defined (__WIN32__) && ! defined (__CYGWIN__) # include <windows.h> #elif defined (HAVE_PTHREAD_H) # include <pthread.h> #endif void octave_base_mutex::lock (void) { (*current_liboctave_error_handler) ("mutex not supported on this platform"); } void octave_base_mutex::unlock (void) { (*current_liboctave_error_handler) ("mutex not supported on this platform"); } bool octave_base_mutex::try_lock (void) { (*current_liboctave_error_handler) ("mutex not supported on this platform"); return false; } #if defined (__WIN32__) && ! defined (__CYGWIN__) class octave_w32_mutex : public octave_base_mutex { public: octave_w32_mutex (void) : octave_base_mutex () { InitializeCriticalSection (&cs); } ~octave_w32_mutex (void) { DeleteCriticalSection (&cs); } void lock (void) { EnterCriticalSection (&cs); } void unlock (void) { LeaveCriticalSection (&cs); } bool try_lock (void) { return (TryEnterCriticalSection (&cs) != 0); } private: CRITICAL_SECTION cs; }; static DWORD octave_thread_id = 0; void octave_thread::init (void) { octave_thread_id = GetCurrentThreadId (); } bool octave_thread::is_octave_thread (void) { return (GetCurrentThreadId () == octave_thread_id); } #elif defined (HAVE_PTHREAD_H) class octave_pthread_mutex : public octave_base_mutex { public: octave_pthread_mutex (void) : octave_base_mutex (), pm () { pthread_mutexattr_t attr; pthread_mutexattr_init (&attr); pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_RECURSIVE); pthread_mutex_init (&pm, &attr); pthread_mutexattr_destroy (&attr); } ~octave_pthread_mutex (void) { pthread_mutex_destroy (&pm); } void lock (void) { pthread_mutex_lock (&pm); } void unlock (void) { pthread_mutex_unlock (&pm); } bool try_lock (void) { return (pthread_mutex_trylock (&pm) == 0); } private: pthread_mutex_t pm; }; static pthread_t octave_thread_id = 0; void octave_thread::init (void) { octave_thread_id = pthread_self (); } bool octave_thread::is_octave_thread (void) { return (pthread_equal (octave_thread_id, pthread_self ()) != 0); } #endif static octave_base_mutex * init_rep (void) { #if defined (__WIN32__) && ! defined (__CYGWIN__) return new octave_w32_mutex (); #elif defined (HAVE_PTHREAD_H) return new octave_pthread_mutex (); #else return new octave_base_mutex (); #endif } octave_mutex::octave_mutex (void) : rep (init_rep ()) { }