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Fix: failure to launch agent thread is not reported
[lttng-tools.git]
/
src
/
bin
/
lttng-sessiond
/
agent-thread.c
diff --git
a/src/bin/lttng-sessiond/agent-thread.c
b/src/bin/lttng-sessiond/agent-thread.c
index 3a46c0fb914058d834b3693e1bf078416b515781..d53e0b1c749e9c8291e5b6630ec4f55dde718257 100644
(file)
--- a/
src/bin/lttng-sessiond/agent-thread.c
+++ b/
src/bin/lttng-sessiond/agent-thread.c
@@
-32,6
+32,8
@@
#include "session.h"
#include "utils.h"
#include "session.h"
#include "utils.h"
+static int agent_tracing_enabled = -1;
+
/*
* Note that there is not port here. It's set after this URI is parsed so we
* can let the user define a custom one. However, localhost is ALWAYS the
/*
* Note that there is not port here. It's set after this URI is parsed so we
* can let the user define a custom one. However, localhost is ALWAYS the
@@
-223,6
+225,15
@@
error:
return ret;
}
return ret;
}
+bool agent_tracing_is_enabled(void)
+{
+ int enabled;
+
+ enabled = uatomic_read(&agent_tracing_enabled);
+ assert(enabled != -1);
+ return enabled == 1;
+}
+
/*
* This thread manage application notify communication.
*/
/*
* This thread manage application notify communication.
*/
@@
-248,6
+259,13
@@
void *agent_thread_manage_registration(void *data)
}
reg_sock = init_tcp_socket();
}
reg_sock = init_tcp_socket();
+ uatomic_set(&agent_tracing_enabled, !!reg_sock);
+
+ /*
+ * Signal that the agent thread is ready. The command thread
+ * may start to query whether or not agent tracing is enabled.
+ */
+ sessiond_notify_ready();
if (!reg_sock) {
goto error_tcp_socket;
}
if (!reg_sock) {
goto error_tcp_socket;
}
@@
-347,6
+365,7
@@
restart:
}
exit:
}
exit:
+ uatomic_set(&agent_tracing_enabled, 0);
/* Whatever happens, try to delete it and exit. */
(void) lttng_poll_del(&events, reg_sock->fd);
error:
/* Whatever happens, try to delete it and exit. */
(void) lttng_poll_del(&events, reg_sock->fd);
error:
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