Hi Mosleh, (I just saw Mathieu's answer arrive in my inbox while I was writing this.)
First, I don't know the exact solution. In Linux, signals are sent with the kill() function. In the LTTng-UST source code, there are 3 signals that relate to 'Suspended: Signal: SIG33:Real-time event 33' (RT): libringbuffer/ring_buffer_frontend.c:82:#define LTTNG_UST_RB_SIG_FLUSH SIGRTMIN libringbuffer/ring_buffer_frontend.c:83:#define LTTNG_UST_RB_SIG_READ SIGRTMIN + 1 libringbuffer/ring_buffer_frontend.c:84:#define LTTNG_UST_RB_SIG_TEARDOWN SIGRTMIN + 2 => http://git.lttng.org/?p=lttng-ust.git;a=blob;f=libringbuffer/ring_buffer_frontend.c;h=9721df1634585f028316d13f96b184af7e99cc08;hb=HEAD#l82 On my system (Ubuntu 18.04.2 LTS with Linux 4.15.0-47-generic), SIGRTMIN = 34. Check with 'kill -l SIGRTMIN' on your system to see if it it the same value. In the LTTng-UST source code, there 1 this call to kill(): libringbuffer/ring_buffer_frontend.c:767: kill(getpid(), LTTNG_UST_RB_SIG_TEARDOWN); => http://git.lttng.org/?p=lttng-ust.git;a=blob;f=libringbuffer/ring_buffer_frontend.c;h=9721df1634585f028316d13f96b184af7e99cc08;hb=HEAD#l767 These custom signals seem to be handled here: libringbuffer/ring_buffer_frontend.c:660 => http://git.lttng.org/?p=lttng-ust.git;a=blob;f=libringbuffer/ring_buffer_frontend.c;h=9721df1634585f028316d13f96b184af7e99cc08;hb=HEAD#l660 On 2019-04-04 3:26 p.m., Mosleh Uddin wrote: > Hello, > > I am building an application which I am compiling with the 'lttng-ust' flag. > When I try to debug the application using gdb, I get a 'Suspended: Signal: > SIG33:Real-time event 33' message. This only happens when I compile with the > 'lttng-ust' flag, if I remove it I no longer have this issue. Any insight? > > Regards, > Mosleh > > _______________________________________________ > lttng-dev mailing list > lttng-dev@lists.lttng.org > https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev > _______________________________________________ lttng-dev mailing list lttng-dev@lists.lttng.org https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
