+ asprintf(&send_msg, "get_subbuffer %s", buf->name);
+ result = ustcomm_send_request(&buf->conn, send_msg, &received_msg);
+ if((result == -1 && errno == EPIPE) || result == 0) {
+ DBG("app died while being traced");
+ retval = GET_SUBBUF_DIED;
+ goto end;
+ }
+ else if(result < 0) {
+ ERR("get_subbuffer: ustcomm_send_request failed");
+ retval = -1;
+ goto end;
+ }
+
+ result = sscanf(received_msg, "%as %ld", &rep_code, &buf->consumed_old);
+ if(result != 2 && result != 1) {
+ ERR("unable to parse response to get_subbuffer");
+ retval = -1;
+ goto end_rep;
+ }
+
+ DBG("received msg is %s", received_msg);
+
+ if(!strcmp(rep_code, "OK")) {
+ DBG("got subbuffer %s", buf->name);
+ retval = GET_SUBBUF_OK;
+ }
+ else if(nth_token_is(received_msg, "END", 0) == 1) {
+ retval = GET_SUBBUF_DONE;
+ goto end_rep;
+ }
+ else {
+ DBG("error getting subbuffer %s", buf->name);
+ retval = -1;
+ }
+
+ /* FIMXE: free correctly the stuff */
+end_rep:
+ if(rep_code)
+ free(rep_code);
+end:
+ if(send_msg)
+ free(send_msg);
+ if(received_msg)
+ free(received_msg);
+
+ return retval;
+}
+
+int put_subbuffer(struct buffer_info *buf)
+{
+ char *send_msg=NULL;
+ char *received_msg=NULL;
+ char *rep_code=NULL;
+ int retval;
+ int result;
+
+ asprintf(&send_msg, "put_subbuffer %s %ld", buf->name, buf->consumed_old);
+ result = ustcomm_send_request(&buf->conn, send_msg, &received_msg);
+ if(result < 0 && errno == ECONNRESET) {
+ retval = PUT_SUBBUF_DIED;
+ goto end;
+ }
+ if(result < 0) {
+ ERR("put_subbuffer: send_message failed");
+ retval = -1;
+ goto end;
+ }
+
+ result = sscanf(received_msg, "%as", &rep_code);
+ if(result != 1) {
+ ERR("unable to parse response to put_subbuffer");
+ retval = -1;
+ goto end_rep;
+ }
+
+ if(!strcmp(rep_code, "OK")) {
+ DBG("subbuffer put %s", buf->name);
+ retval = PUT_SUBBUF_OK;
+ }
+ else {
+ DBG("put_subbuffer: received error, we were pushed");
+ retval = PUT_SUBBUF_PUSHED;
+ goto end_rep;
+ }
+
+end_rep:
+ if(rep_code)
+ free(rep_code);
+
+end:
+ if(send_msg)
+ free(send_msg);
+ if(received_msg)
+ free(received_msg);
+
+ return retval;
+}
+
+void decrement_active_buffers(void *arg)
+{
+ pthread_mutex_lock(&active_buffers_mutex);
+ active_buffers--;
+ pthread_mutex_unlock(&active_buffers_mutex);
+}
+
+int create_dir_if_needed(char *dir)
+{
+ int result;
+ result = mkdir(dir, 0777);
+ if(result == -1) {
+ if(errno != EEXIST) {
+ PERROR("mkdir");
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+int is_directory(const char *dir)
+{
+ int result;
+ struct stat st;
+
+ result = stat(dir, &st);
+ if(result == -1) {
+ PERROR("stat");
+ return 0;
+ }
+
+ if(!S_ISDIR(st.st_mode)) {
+ return 0;
+ }