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I'm trying to code up a FSEvent callback using a member function.
I am using both the boost::bind and boost::function libraries. I have the following declaration for declaring the signature of the FSEventCallback:
The skeleton of the struct that has the member function that I want the member function to be called looks like:
In the constructor I get a single compile in the call FSEventStreamCreate:
/Users/bill/ardev/CurrentDev/InternalLibs/fsmon/osxExample.cpp:111: error: cannot convert 'FSEventCallbackT*' to 'void (*)(const __FSEventStream*, void*, size_t, void*, const FSEventStreamEventFlags*, const FSEventStreamEventId*)' for argument '2' to '__FSEventStream* FSEventStreamCreate(const __CFAllocator*, void (*)(const __FSEventStream*, void*, size_t, void*, const FSEventStreamEventFlags*, const FSEventStreamEventId*), FSEventStreamContext*, const __CFArray*, FSEventStreamEventId, CFTimeInterval, FSEventStreamCreateFlags)'
Frankly I am stumped.
Bill
I am using both the boost::bind and boost::function libraries. I have the following declaration for declaring the signature of the FSEventCallback:
typedef boost::function<(
ConstFSEventStreamRef streamRef, // _1
void *clientCallBackInfo, // _2
size_t numEvents, // _3
void *eventPaths, // _4
const FSEventStreamEventFlags eventFlags[], // _5
const FSEventStreamEventId eventIds[] // _6
)> FSEventCallbackT;
The skeleton of the struct that has the member function that I want the member function to be called looks like:
struct osx::detail {
// Callback type definition
static const CFAbsoluteTime LATENCY = 2.0;
static const unsigned BUF_SIZE = 32768;
CFStringRef pathToWatch;
CFArrayRef pathsToWatch;
FSEventStreamRef streamRef;
void *callbackInfo;
CFRunLoopRef mainLoop;
boost::mutex event_mutex;
typedef boost::mutex::scoped_lock lock_type;
FSEventCallbackT callBack;
// public methods
detail(
const boost::filesystem:ath& base_path
);
~detail() {
stop();
// destructor is guaranteed not to be called while get_item() is
// active in another thread
}
void stop();
void FSEventTriggered(
ConstFSEventStreamRef streamRef, // _1
void *clientCallBackInfo, // _2
size_t numEvents, // _3
void *eventPaths, // _4
const FSEventStreamEventFlags eventFlags[], // _5
const FSEventStreamEventId eventIds[] // _6
);
item get_item();
};
In the constructor I get a single compile in the call FSEventStreamCreate:
osx::detail::detail(
const boost::filesystem:ath& base_path
) :
base_path(base_path),
stopped(false),
pathToWatch(CFStringCreateWithCString(NULL,base_path.string().c_str(), kCFStringEncodingUTF8)),
pathsToWatch(CFArrayCreate(NULL, (const void **) &pathToWatch, 1, NULL))
{
callBack = boost::bind(&fsmon :: osx::detail::FSEventTriggered, this, _1, _2, _3, _4, _5, _6);
streamRef = FSEventStreamCreate(NULL,
&callBack,
callbackInfo,
pathsToWatch,
kFSEventStreamEventIdSinceNow,
LATENCY,
kFSEventStreamCreateFlagNone
);
/Users/bill/ardev/CurrentDev/InternalLibs/fsmon/osxExample.cpp:111: error: cannot convert 'FSEventCallbackT*' to 'void (*)(const __FSEventStream*, void*, size_t, void*, const FSEventStreamEventFlags*, const FSEventStreamEventId*)' for argument '2' to '__FSEventStream* FSEventStreamCreate(const __CFAllocator*, void (*)(const __FSEventStream*, void*, size_t, void*, const FSEventStreamEventFlags*, const FSEventStreamEventId*), FSEventStreamContext*, const __CFArray*, FSEventStreamEventId, CFTimeInterval, FSEventStreamCreateFlags)'
Frankly I am stumped.
Bill