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Little bit of refactoring

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This commit is contained in:
Maas-Maarten Zeeman
2011-10-21 10:18:14 +02:00
parent 87318f8764
commit 9347c2df55
1 changed files with 50 additions and 25 deletions
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75
c_src/esqlite_nif.c
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@@ -100,6 +100,7 @@ command_create()
}
/*
*
*/
static void
descruct_esqlite_db(ErlNifEnv *env, void *arg)
@@ -117,41 +118,63 @@ descruct_esqlite_db(ErlNifEnv *env, void *arg)
enif_thread_opts_destroy(db->opts);
}
static ERL_NIF_TERM
do_open(ErlNifEnv *env, esqlite_db *db, const ERL_NIF_TERM argv[])
{
fprintf(stderr, "do_open\n");
return _atom_ok;
}
static ERL_NIF_TERM
do_exec(ErlNifEnv *env, esqlite_db *db, const ERL_NIF_TERM argv[])
{
fprintf(stderr, "do_exec\n");
return _atom_ok;
}
static ERL_NIF_TERM
do_close(ErlNifEnv *env, esqlite_db *db, const ERL_NIF_TERM argv[])
{
fprintf(stderr, "do_close\n");
return _atom_ok;
}
static ERL_NIF_TERM
evaluate_command(ErlNifEnv *env, command_type type, esqlite_db *db, const ERL_NIF_TERM argv[])
{
switch(type) {
case cmd_open:
return do_open(env, db, NULL);
case cmd_exec:
return do_exec(env, db, NULL);
case cmd_close:
return do_close(env, db, NULL);
default:
return make_error_tuple(env, "invalid_command");
}
}
static void *
esqlite_db_run(void *arg)
{
esqlite_db *db = (esqlite_db *) arg;
esqlite_command *cmd;
ERL_NIF_TERM answer;
int continue_running = 1;
db->alive = 1;
while(1) {
while(continue_running) {
cmd = queue_pop(db->commands);
if(cmd_stop == cmd->type) {
fprintf(stderr, "received stop\n");
command_destroy(cmd);
break;
if(cmd->type == cmd_stop) {
continue_running = 0;
} else {
answer = evaluate_command(cmd->env, cmd->type, db, NULL);
enif_send(NULL, &cmd->pid, cmd->env, enif_make_tuple2(cmd->env, cmd->ref, answer));
}
/* Evaluate the command */
switch(cmd->type) {
case cmd_open:
fprintf(stderr, "received open\n");
break;
case cmd_exec:
fprintf(stderr, "received exec\n");
break;
case cmd_close:
fprintf(stderr, "received close\n");
break;
default:
assert(0 && "Invalid command");
}
/* TODO: A real implementation for a command */
enif_send(NULL, &cmd->pid, cmd->env, enif_make_tuple2(cmd->env, cmd->ref, _atom_ok));
command_destroy(cmd);
command_destroy(cmd);
}
db->alive = 0;
@@ -221,7 +244,7 @@ esqlite_open_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
cmd->type = cmd_open;
cmd->ref = enif_make_copy(cmd->env, argv[1]);
cmd->pid = pid;
/* todo add the filename */
/* TODO add the filename as an argument */
if(!queue_push(db->commands, cmd))
return make_error_tuple(env, "command_push_failed");
@@ -229,6 +252,8 @@ esqlite_open_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
return _atom_ok;
}
/*
* Execute the sql statement
*/