Refcnt is a small shared library supplying intrusive reference counting.
- base class
ref::Refcounted
. Application classes opt-in to reference counting by inheriting this class. - common base simplifies connecting to common-base-object applications such as python, java etc.
$ git clone [email protected]:rconybea/refcnt.git
$ ls -d xo-refcnt
xo-refcnt
$ cd xo-refcnt
$ mkdir build
$ cd build
$ cmake -DCMAKE_MODULE_PATH=${INSTALL_PREFIX}/share/cmake -DCMAKE_PREFIX_PATH=${INSTALL_PREFIX} -DCMAKE_INSTALL_PREFIX=${INSTALL_PREFIX} ..
$ make
$ make install
CMAKE_PREFIX_PATH
should point to prefix where indentlog
is installed
alternatively, if you're a nix user:
$ git clone [email protected]:rconybea/xo-nix.git
$ ls -d xo-nix
xo-nix
$ cd xo-nix
$ nix-build -A xo-refcnt
$ cd xo-refcnt
$ mkdir ccov
$ cd ccov
$ cmake -DCMAKE_MODULE_PATH=${INSTALL_PREFIX}/share/cmake -DCMAKE_PREFIX_PATH=${INSTALL_PREFIX} -DCODE_COVERAGE=ON -DCMAKE_BUILD_TYPE=Debug ..
$ cd xo-refcnt
$ ln -s build/compile_commands.json # lsp will look for compile_commands.json in the root of the source tree
#include "xo/refcnt/Refcounted.hpp"
using xo::ref::Refcounted;
struct MyObject : public Refcounted {
static rp<MyObject> make() { return new MyObject(); }
private:
// intrusively-reference-counted objects should only be heap-allocated
MyObject() { ... }
};
int main() {
// create reference-counted instance
auto x = MyObject::make();
auto y = x;
// x,y refer to the same instance.
x = nullptr;
// y holds last reference
y = nullptr;
// MyObject has been deleted
}
To log reference-counting activity
xo::ref::intrusive_ptr_set_debug(true);