diff options
Diffstat (limited to 'doc/src/snippets/code/src_corelib_thread_qsemaphore.cpp')
-rw-r--r-- | doc/src/snippets/code/src_corelib_thread_qsemaphore.cpp | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/doc/src/snippets/code/src_corelib_thread_qsemaphore.cpp b/doc/src/snippets/code/src_corelib_thread_qsemaphore.cpp deleted file mode 100644 index fd4ff98314..0000000000 --- a/doc/src/snippets/code/src_corelib_thread_qsemaphore.cpp +++ /dev/null @@ -1,73 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/ -** -** This file is part of the documentation of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** You may use this file under the terms of the BSD license as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor -** the names of its contributors may be used to endorse or promote -** products derived from this software without specific prior written -** permission. -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -//! [0] -QSemaphore sem(5); // sem.available() == 5 - -sem.acquire(3); // sem.available() == 2 -sem.acquire(2); // sem.available() == 0 -sem.release(5); // sem.available() == 5 -sem.release(5); // sem.available() == 10 - -sem.tryAcquire(1); // sem.available() == 9, returns true -sem.tryAcquire(250); // sem.available() == 9, returns false -//! [0] - - -//! [1] -QSemaphore sem(5); // a semaphore that guards 5 resources -sem.acquire(5); // acquire all 5 resources -sem.release(5); // release the 5 resources -sem.release(10); // "create" 10 new resources -//! [1] - - -//! [2] -QSemaphore sem(5); // sem.available() == 5 -sem.tryAcquire(250); // sem.available() == 5, returns false -sem.tryAcquire(3); // sem.available() == 2, returns true -//! [2] - - -//! [3] -QSemaphore sem(5); // sem.available() == 5 -sem.tryAcquire(250, 1000); // sem.available() == 5, waits 1000 milliseconds and returns false -sem.tryAcquire(3, 30000); // sem.available() == 2, returns true without waiting -//! [3] |