initial progress on modems

src/components/modem.c

@@ -0,0 +1,55 @@
+#include "../neonucleus.h"
+
+typedef struct nn_modem {
+    nn_Context ctx;
+    nn_guard *lock;
+    nn_refc refc;
+    nn_modemTable table;
+    nn_networkControl ctrl;
+} nn_modem;
+
+nn_modem *nn_newModem(nn_Context *context, nn_modemTable table, nn_networkControl control) {
+    nn_modem *m = nn_alloc(&context->allocator, sizeof(nn_modem));
+    if(m == NULL) return m;
+    m->ctx = *context;
+    m->lock = nn_newGuard(context);
+    m->refc = 1;
+    m->table = table;
+    m->ctrl = control;
+    return m;
+}
+
+nn_guard *nn_getModemLock(nn_modem *modem) {
+    return modem->lock;
+}
+
+void nn_retainModem(nn_modem *modem) {
+    nn_incRef(&modem->refc);
+}
+
+nn_bool_t nn_destroyModem(nn_modem *modem) {
+    if(!nn_decRef(&modem->refc)) return false;
+
+    if(modem->table.deinit != NULL) {
+        modem->table.deinit(modem->table.userdata);
+    }
+
+    nn_Context ctx = modem->ctx;
+    nn_deleteGuard(&ctx, modem->lock);
+    nn_dealloc(&ctx.allocator, modem, sizeof(nn_modem));
+    return true;
+}
+
+void nn_modem_destroy(void *_, nn_component *component, nn_modem *modem) {
+    nn_destroyModem(modem);
+}
+
+void nn_loadModemTable(nn_universe *universe) {
+    nn_componentTable *modemTable = nn_newComponentTable(nn_getAllocator(universe), "modem", NULL, NULL, (nn_componentDestructor *)nn_modem_destroy);
+    nn_storeUserdata(universe, "NN:MODEM", modemTable);
+}
+
+nn_component *nn_addModem(nn_computer *computer, nn_address address, int slot, nn_modem *modem) {
+    nn_componentTable *modemTable = nn_queryUserdata(nn_getUniverse(computer), "NN:MODEM");
+    return nn_newComponent(computer, address, slot, modemTable, modem);
+}