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-rw-r--r--backends/lua.c105
-rw-r--r--backends/lua.h14
-rw-r--r--backends/python.c3
3 files changed, 68 insertions, 54 deletions
diff --git a/backends/lua.c b/backends/lua.c
index b66a27a..b71ca97 100644
--- a/backends/lua.c
+++ b/backends/lua.c
@@ -245,13 +245,13 @@ static int lua_callback_output(lua_State* interpreter){
//find correct channel & output value
for(n = 0; n < data->channels; n++){
- if(!strcmp(channel_name, data->channel_name[n])){
+ if(!strcmp(channel_name, data->channel[n].name)){
channel = mm_channel(inst, n, 0);
if(!channel){
return 0;
}
mm_channel_event(channel, val);
- data->output[n] = val.normalised;
+ data->channel[n].out = val.normalised;
return 0;
}
}
@@ -357,8 +357,8 @@ static int lua_callback_value(lua_State* interpreter, uint8_t input){
//find correct channel & return value
for(n = 0; n < data->channels; n++){
- if(!strcmp(channel_name, data->channel_name[n])){
- lua_pushnumber(interpreter, (input) ? data->input[n] : data->output[n]);
+ if(!strcmp(channel_name, data->channel[n].name)){
+ lua_pushnumber(interpreter, (input) ? data->channel[n].in : data->channel[n].out);
return 1;
}
}
@@ -453,26 +453,23 @@ static channel* lua_channel(instance* inst, char* spec, uint8_t flags){
//find matching channel
for(u = 0; u < data->channels; u++){
- if(!strcmp(spec, data->channel_name[u])){
+ if(!strcmp(spec, data->channel[u].name)){
break;
}
}
//allocate new channel
if(u == data->channels){
- data->channel_name = realloc(data->channel_name, (u + 1) * sizeof(char*));
- data->reference = realloc(data->reference, (u + 1) * sizeof(int));
- data->input = realloc(data->input, (u + 1) * sizeof(double));
- data->output = realloc(data->output, (u + 1) * sizeof(double));
- if(!data->channel_name || !data->reference || !data->input || !data->output){
+ data->channel = realloc(data->channel, (data->channels + 1) * sizeof(lua_channel_data));
+ if(!data->channel){
LOG("Failed to allocate memory");
+ data->channels = 0;
return NULL;
}
- data->reference[u] = LUA_NOREF;
- data->input[u] = data->output[u] = 0.0;
- data->channel_name[u] = strdup(spec);
- if(!data->channel_name[u]){
+ data->channel[u].in = data->channel[u].out = 0.0;
+ data->channel[u].name = strdup(spec);
+ if(!data->channel[u].name){
LOG("Failed to allocate memory");
return NULL;
}
@@ -483,23 +480,24 @@ static channel* lua_channel(instance* inst, char* spec, uint8_t flags){
}
static int lua_set(instance* inst, size_t num, channel** c, channel_value* v){
- size_t n = 0;
+ size_t n = 0, ident;
lua_instance_data* data = (lua_instance_data*) inst->impl;
//handle all incoming events
for(n = 0; n < num; n++){
- data->input[c[n]->ident] = v[n].normalised;
+ ident = c[n]->ident;
+ data->channel[ident].in = v[n].normalised;
//call lua channel handlers if present
- if(data->reference[c[n]->ident] != LUA_NOREF){
+ if(data->channel[ident].reference != LUA_NOREF){
//push the channel name
lua_pushstring(data->interpreter, LUA_REGISTRY_CURRENT_CHANNEL);
- lua_pushstring(data->interpreter, data->channel_name[c[n]->ident]);
+ lua_pushstring(data->interpreter, data->channel[ident].name);
lua_settable(data->interpreter, LUA_REGISTRYINDEX);
- lua_rawgeti(data->interpreter, LUA_REGISTRYINDEX, data->reference[c[n]->ident]);
+ lua_rawgeti(data->interpreter, LUA_REGISTRYINDEX, data->channel[ident].reference);
lua_pushnumber(data->interpreter, v[n].normalised);
if(lua_pcall(data->interpreter, 1, 0, 0) != LUA_OK){
- LOGPF("Failed to call handler for %s.%s: %s", inst->name, data->channel_name[c[n]->ident], lua_tostring(data->interpreter, -1));
+ LOGPF("Failed to call handler for %s.%s: %s", inst->name, data->channel[ident].name, lua_tostring(data->interpreter, -1));
lua_pop(data->interpreter, 1);
}
}
@@ -564,37 +562,51 @@ static int lua_handle(size_t num, managed_fd* fds){
return 0;
}
+static int lua_resolve_symbol(lua_State* interpreter, char* symbol){
+ int reference = LUA_REFNIL;
+
+ //exclude reserved names
+ if(!strcmp(symbol, "output")
+ || !strcmp(symbol, "thread")
+ || !strcmp(symbol, "sleep")
+ || !strcmp(symbol, "input_value")
+ || !strcmp(symbol, "output_value")
+ || !strcmp(symbol, "input_channel")
+ || !strcmp(symbol, "timestamp")
+ || !strcmp(symbol, "interval")){
+ return LUA_NOREF;
+ }
+
+ lua_getglobal(interpreter, symbol);
+ reference = luaL_ref(interpreter, LUA_REGISTRYINDEX);
+ if(reference == LUA_REFNIL){
+ return LUA_NOREF;
+ }
+ return reference;
+}
+
static int lua_start(size_t n, instance** inst){
size_t u, p;
lua_instance_data* data = NULL;
+ int default_handler;
//resolve channels to their handler functions
for(u = 0; u < n; u++){
data = (lua_instance_data*) inst[u]->impl;
- for(p = 0; p < data->channels; p++){
- //exclude reserved names
- if(!data->default_handler
- && strcmp(data->channel_name[p], "output")
- && strcmp(data->channel_name[p], "thread")
- && strcmp(data->channel_name[p], "sleep")
- && strcmp(data->channel_name[p], "input_value")
- && strcmp(data->channel_name[p], "output_value")
- && strcmp(data->channel_name[p], "input_channel")
- && strcmp(data->channel_name[p], "timestamp")
- && strcmp(data->channel_name[p], "interval")){
- lua_getglobal(data->interpreter, data->channel_name[p]);
- data->reference[p] = luaL_ref(data->interpreter, LUA_REGISTRYINDEX);
- if(data->reference[p] == LUA_REFNIL){
- data->reference[p] = LUA_NOREF;
- }
+ default_handler = LUA_NOREF;
+
+ //try to resolve default handler if given
+ if(data->default_handler){
+ default_handler = lua_resolve_symbol(data->interpreter, data->default_handler);
+ if(default_handler == LUA_NOREF){
+ LOGPF("Failed to resolve default handler %s on %s", data->default_handler, inst[u]->name);
}
- else if(data->default_handler){
- lua_getglobal(data->interpreter, data->default_handler);
- data->reference[p] = luaL_ref(data->interpreter, LUA_REGISTRYINDEX);
- if(data->reference[p] == LUA_REFNIL){
- data->reference[p] = LUA_NOREF;
- LOGPF("Failed to resolve default handler function %s on instance %s", data->default_handler, inst[u]->name);
- }
+ }
+
+ for(p = 0; p < data->channels; p++){
+ data->channel[p].reference = default_handler;
+ if(!data->default_handler){
+ data->channel[p].reference = lua_resolve_symbol(data->interpreter, data->channel[p].name);
}
}
}
@@ -621,12 +633,9 @@ static int lua_shutdown(size_t n, instance** inst){
lua_close(data->interpreter);
//cleanup channel data
for(p = 0; p < data->channels; p++){
- free(data->channel_name[p]);
+ free(data->channel[p].name);
}
- free(data->channel_name);
- free(data->reference);
- free(data->input);
- free(data->output);
+ free(data->channel);
free(data->default_handler);
free(inst[u]->impl);
}
diff --git a/backends/lua.h b/backends/lua.h
index d8e720a..3c7568b 100644
--- a/backends/lua.h
+++ b/backends/lua.h
@@ -22,14 +22,18 @@ static int lua_shutdown(size_t n, instance** inst);
static uint32_t lua_interval();
#endif
+typedef struct /*_lua_channel*/ {
+ char* name;
+ int reference;
+ double in;
+ double out;
+} lua_channel_data;
+
typedef struct /*_lua_instance_data*/ {
size_t channels;
- char** channel_name;
- int* reference;
- double* input;
- double* output;
- lua_State* interpreter;
+ lua_channel_data* channel;
+ lua_State* interpreter;
char* default_handler;
} lua_instance_data;
diff --git a/backends/python.c b/backends/python.c
index 735e838..c658f30 100644
--- a/backends/python.c
+++ b/backends/python.c
@@ -78,7 +78,8 @@ static void python_timer_recalculate(){
}
//10msec is absolute lower limit and minimum gcd due to rounding
- if(next_interval == 10){
+ if(next_interval <= 10){
+ next_interval = 10;
break;
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 08:04:34 +0000