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# File 'ext/mysql2/client.c', line 257
static VALUE rb_mysql_client_query(int argc, VALUE * argv, VALUE self) {
struct nogvl_send_query_args args;
fd_set fdset;
int fd, retval;
int async = 0;
VALUE opts, defaults;
GET_CLIENT(self)
REQUIRE_OPEN_DB(client);
args.mysql = client;
// see if this connection is still waiting on a result from a previous query
if (wrapper->active == 0) {
// mark this connection active
wrapper->active = 1;
} else {
rb_raise(cMysql2Error, "This connection is still waiting for a result, try again once you have the result");
}
defaults = rb_iv_get(self, "@query_options");
if (rb_scan_args(argc, argv, "11", &args.sql, &opts) == 2) {
opts = rb_funcall(defaults, intern_merge, 1, opts);
rb_iv_set(self, "@query_options", opts);
if (rb_hash_aref(opts, sym_async) == Qtrue) {
async = 1;
}
} else {
opts = defaults;
}
#ifdef HAVE_RUBY_ENCODING_H
rb_encoding *conn_enc = rb_to_encoding(wrapper->encoding);
// ensure the string is in the encoding the connection is expecting
args.sql = rb_str_export_to_enc(args.sql, conn_enc);
#endif
if (rb_thread_blocking_region(nogvl_send_query, &args, RUBY_UBF_IO, 0) == Qfalse) {
// an error occurred, we're not active anymore
MARK_CONN_INACTIVE(self);
return rb_raise_mysql2_error(client);
}
if (!async) {
// the below code is largely from do_mysql
// http://github.com/datamapper/do
fd = client->net.fd;
for(;;) {
FD_ZERO(&fdset);
FD_SET(fd, &fdset);
retval = rb_thread_select(fd + 1, &fdset, NULL, NULL, NULL);
if (retval < 0) {
rb_sys_fail(0);
}
if (retval > 0) {
break;
}
}
VALUE result = rb_mysql_client_async_result(self);
return result;
} else {
return Qnil;
}
}
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