flag all calls as dirty nifs

README.md

@@ -2,7 +2,34 @@
 
 Bindings for lexborisov's [myhtml](https://github.com/lexborisov/myhtml).
 
+## Thoughts
+
+I need to a fast html-parsing library in Erlang/Elixir.
+So falling back to c, and to myhtml especially, is a natural move.
+
+But Erlang interoperability is a tricky mine-field.
+This increase in parsing speed does not come for free.
+
+The current implementation can be considered a proof-of-concept.
+The myhtml code is called as a dirty-nif and executed **inside the Erlang-VM**.
+Thus completely giving up the safety of the Erlang-VM. I am not saying that myhtml is unsafe, but
+the slightest Segfault brings down the whole Erlang-VM.
+So, I consider this mode of operation unsafe, and **not recommended for production use**.
+
+The other option, that I have on my roadmap, is to call into a C-Node.
+A separate OS-process that receives calls from erlang and returns to the calling process.
+
+So to recap, I want a **fast** and **safe** html-parsing library for Erlang/Elixir.
+
+Not quite there, yet.
+
 ## Status
 
 Currently under development.
 
+* [x] Parse a HTML-document into a tree
+* [ ] Expose node-retrieval functions
+* [ ] Investigate safety and calling options
+  * [x] Call as dirty-nif
+  * [ ] Call as C-Node
+

src/myhtmlex.c

@@ -354,9 +354,9 @@ unload(ErlNifEnv *env, void *priv)
 
 static ErlNifFunc funcs[] =
 {
-  {"decode", 1, nif_decode},
-  {"open", 1, nif_open},
-  {"decode_tree", 1, nif_decode_tree}
+  {"decode", 1, nif_decode, ERL_NIF_DIRTY_JOB_CPU_BOUND},
+  {"open", 1, nif_open, ERL_NIF_DIRTY_JOB_CPU_BOUND},
+  {"decode_tree", 1, nif_decode_tree, ERL_NIF_DIRTY_JOB_CPU_BOUND}
 };
 
 ERL_NIF_INIT(Elixir.Myhtmlex.Decoder, funcs, &load, &reload, &upgrade, &unload)