#include "tracer.h"
#include "localerr.h"
#include "ustcomm.h"
+#include "relay.h" /* FIXME: remove */
//#define USE_CLONE
-#define UNIX_PATH_MAX 108
-
-#define SOCKETDIR "/tmp/socks"
-#define SOCKETDIRLEN sizeof(SOCKETDIR)
#define USTSIGNAL SIGIO
#define MAX_MSG_SIZE (100)
char payload[94];
};
-char mysocketfile[UNIX_PATH_MAX] = "";
-//int pfd = -1;
-
struct consumer_channel {
int fd;
struct ltt_channel_struct *chan;
}
}
-#define CONSUMER_DAEMON_SOCK SOCKETDIR "/ustd"
-
static int inform_consumer_daemon(void)
{
ustcomm_request_consumer(getpid(), "metadata");
free(channel_name);
free(consumed_old_str);
}
+ else if(nth_token_is(recvbuf, "get_notifications", 0) == 1) {
+ struct ltt_trace_struct *trace;
+ char trace_name[] = "auto";
+ int i;
+ char *channel_name;
+
+ DBG("get_notifications");
+
+ channel_name = strdup_malloc(nth_token(recvbuf, 1));
+ if(channel_name == NULL) {
+ ERR("put_subbuf_size: cannot parse channel");
+ goto next_cmd;
+ }
+
+ ltt_lock_traces();
+ trace = _ltt_trace_find(trace_name);
+ ltt_unlock_traces();
+
+ if(trace == NULL) {
+ CPRINTF("cannot find trace!");
+ return 1;
+ }
+
+ for(i=0; i<trace->nr_channels; i++) {
+ struct rchan *rchan = trace->channels[i].trans_channel_data;
+ int fd;
+
+ if(!strcmp(trace->channels[i].channel_name, channel_name)) {
+ struct rchan_buf *rbuf = rchan->buf;
+ struct ltt_channel_buf_struct *lttbuf = trace->channels[i].buf;
+
+ result = fd = ustcomm_app_detach_client(&ustcomm_app, &src);
+ if(result == -1) {
+ ERR("ustcomm_app_detach_client failed");
+ goto next_cmd;
+ }
+
+ lttbuf->wake_consumer_arg = (void *) fd;
+
+ smp_wmb();
+
+ lttbuf->call_wake_consumer = 1;
+
+ break;
+ }
+ }
+
+ free(channel_name);
+ }
else {
ERR("unable to parse message: %s", recvbuf);
}
static void destroy_socket(void)
{
- int result;
-
- if(mysocketfile[0] == '\0')
- return;
-
- result = unlink(mysocketfile);
- if(result == -1) {
- PERROR("unlink");
- }
+// int result;
+//
+// if(mysocketfile[0] == '\0')
+// return;
+//
+// result = unlink(mysocketfile);
+// if(result == -1) {
+// PERROR("unlink");
+// }
}
static int init_signal_handler(void)
DBG("just auto connected marker %s %s to probe default", m->channel, m->name);
}
+/* Wake the consumer of a buffer
+ *
+ * wake_consumer_cb is called in tracing context so it must haste.
+ *
+ * FIXME: don't do a system call here; maybe schedule work to be done
+ * in listener context? Once this is done in listener context, we can
+ * check for the return value of send_message_fd and remove the fd if necessary
+ *
+ * @arg: the buffer
+ * @finished: 0: subbuffer full; 1: buffer being destroyed
+ */
+
+static void wake_consumer_cb(void *arg, int finished)
+{
+ struct ltt_channel_buf_struct *ltt_buf = (struct ltt_channel_buf_struct *) arg;
+ int fd = (int)ACCESS_ONCE(arg);
+
+ if(!finished) {
+ send_message_fd(fd, "consume", NULL);
+ }
+ else {
+ send_message_fd(fd, "destroyed", NULL);
+ }
+}
+
static void __attribute__((constructor(101))) init0()
{
DBG("UST_AUTOPROBE constructor");
if(getenv("UST_AUTOPROBE")) {
marker_set_new_marker_cb(auto_probe_connect);
}
+
+ relay_set_wake_consumer(wake_consumer_cb);
}
static void fini(void);