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Diffstat (limited to 'distrho/src/CoreAudio106/PublicUtility/CACFMachPort.cpp')
-rwxr-xr-x | distrho/src/CoreAudio106/PublicUtility/CACFMachPort.cpp | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/distrho/src/CoreAudio106/PublicUtility/CACFMachPort.cpp b/distrho/src/CoreAudio106/PublicUtility/CACFMachPort.cpp new file mode 100755 index 00000000..3732af88 --- /dev/null +++ b/distrho/src/CoreAudio106/PublicUtility/CACFMachPort.cpp @@ -0,0 +1,138 @@ +/* Copyright © 2007 Apple Inc. All Rights Reserved. + + Disclaimer: IMPORTANT: This Apple software is supplied to you by + Apple Inc. ("Apple") in consideration of your agreement to the + following terms, and your use, installation, modification or + redistribution of this Apple software constitutes acceptance of these + terms. If you do not agree with these terms, please do not use, + install, modify or redistribute this Apple software. + + In consideration of your agreement to abide by the following terms, and + subject to these terms, Apple grants you a personal, non-exclusive + license, under Apple's copyrights in this original Apple software (the + "Apple Software"), to use, reproduce, modify and redistribute the Apple + Software, with or without modifications, in source and/or binary forms; + provided that if you redistribute the Apple Software in its entirety and + without modifications, you must retain this notice and the following + text and disclaimers in all such redistributions of the Apple Software. + Neither the name, trademarks, service marks or logos of Apple Inc. + may be used to endorse or promote products derived from the Apple + Software without specific prior written permission from Apple. Except + as expressly stated in this notice, no other rights or licenses, express + or implied, are granted by Apple herein, including but not limited to + any patent rights that may be infringed by your derivative works or by + other works in which the Apple Software may be incorporated. + + The Apple Software is provided by Apple on an "AS IS" basis. APPLE + MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION + THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS + FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND + OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS. + + IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL + OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, + MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED + AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), + STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE + POSSIBILITY OF SUCH DAMAGE. +*/ +//================================================================================================== +// Includes +//================================================================================================== + +#include "CACFMachPort.h" +#include "CAException.h" +#include "CADebugMacros.h" + +//================================================================================================== +// CACFMachPort +//================================================================================================== + +// This constructor is the short form. The CFMachPort will own the send and receive rights. +CACFMachPort::CACFMachPort(CFMachPortCallBack inCallBack, void* inUserData) +: + mMachPort(NULL), + mRunLoopSource(NULL), + mOwnsPort(true) +{ + CFMachPortContext theContext = { 1, inUserData, NULL, NULL, NULL }; + mMachPort = CFMachPortCreate(NULL, inCallBack, &theContext, NULL); + ThrowIfNULL(mMachPort, CAException('what'), "CACFMachPort::CACFMachPort(s): couldn't create the CFMachPort"); + + mRunLoopSource = CFMachPortCreateRunLoopSource(NULL, mMachPort, 0); + if(mRunLoopSource == NULL) + { + CFMachPortInvalidate(mMachPort); + CFRelease(mMachPort); + mMachPort = NULL; + DebugMessage("CACFMachPort::CACFMachPort(s): couldn't create the CFRunLoopSource"); + throw CAException('what'); + } +} + +// This constructor is the general form: +// - If inMachPort is MACH_PORT_NULL, the CFMachPort will allocate the port and own the send and +// receive rights. Otherwise, the caller owns the rights and is resposible for cleaning them +// up. +// - If inCallBack is NULL, then received messages will just get swallowed by the CFMachPort. +// This is useful if you are only using the CFMachPort to track port death (aka invalidation). +// - If inInvalidationCallBack is non-NULL, then it will be installed as the invalidation +// callback on the CFMachPort. +CACFMachPort::CACFMachPort(mach_port_t inMachPort, CFMachPortCallBack inCallBack, CFMachPortInvalidationCallBack inInvalidationCallBack, void* inUserData) +: + mMachPort(NULL), + mRunLoopSource(NULL), + mOwnsPort(false) +{ + CFMachPortContext theContext = { 1, inUserData, NULL, NULL, NULL }; + + if(inMachPort == MACH_PORT_NULL) + { + mMachPort = CFMachPortCreate(NULL, inCallBack, &theContext, NULL); + ThrowIfNULL(mMachPort, CAException('what'), "CACFMachPort::CACFMachPort: couldn't create the CFMachPort"); + mOwnsPort = true; + } + else + { + mMachPort = CFMachPortCreateWithPort(NULL, inMachPort, inCallBack, &theContext, NULL); + ThrowIfNULL(mMachPort, CAException('what'), "CACFMachPort::CACFMachPort: couldn't create the CFMachPort with a port"); + mOwnsPort = false; + } + + mRunLoopSource = CFMachPortCreateRunLoopSource(NULL, mMachPort, 0); + if(mRunLoopSource == NULL) + { + if(mOwnsPort) + { + CFMachPortInvalidate(mMachPort); + } + CFRelease(mMachPort); + mMachPort = NULL; + DebugMessage("CACFMachPort::CACFMachPort: couldn't create the CFRunLoopSource"); + throw CAException('what'); + } + + if(inInvalidationCallBack != NULL) + { + CFMachPortSetInvalidationCallBack(mMachPort, inInvalidationCallBack); + } +} + +CACFMachPort::~CACFMachPort() +{ + if(mRunLoopSource != NULL) + { + CFRelease(mRunLoopSource); + } + + if(mMachPort != NULL) + { + if(mOwnsPort) + { + CFMachPortInvalidate(mMachPort); + } + CFRelease(mMachPort); + } +} |