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#pragma once
/*
CFHandle is a minimal wrapper designed to hold and release CoreFoundation-style handles
It is non-transferrable: wrap it in something like a unique_ptr if you need to pass it around,
or just use unique_ptr with a custom deleter.
CFHandle has no special treatment for null handles -- be careful not to let it hold a null
handle if the behavior of the Releaser isn't defined for null.
ex:
using CFDataHandle = CFHandle<CFDataRef, CFTypeRef, CFRelease>;
CFDataHandle data(CFDataCreateWithBytesNoCopy(
kCFAllocatorDefault, reinterpret_cast<const unsigned char*>(source.data()), source.size(),
kCFAllocatorNull));
*/
namespace {
template <typename HandleType, typename ReleaserArgumentType, void (*Releaser)(ReleaserArgumentType)>
struct CFHandle {
CFHandle(HandleType handle_): handle(handle_) {}
~CFHandle() { Releaser(handle); }
HandleType operator*() { return handle; }
operator bool() { return handle; }
private:
HandleType handle;
};
} // namespace
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