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u3: statically measure memory on startup if < 1/2 the loom is free

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This commit is contained in:
Joe Bryan 2019-10-17 15:50:28 -07:00
parent bf5a1276af
commit 1cfedf2273
1 changed files with 27 additions and 0 deletions
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27
pkg/urbit/worker/main.c
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@ -898,6 +898,21 @@ _worker_poke(void* vod_p, u3_noun mat)
}
}
/* _worker_static_grab(): garbage collect, checking for profiling. RETAIN.
*/
static void
_worker_static_grab(void)
{
c3_assert( u3R == &(u3H->rod_u) );
fprintf(stderr, "work: measuring memory:\r\n");
u3a_print_memory(stderr, "total marked", u3m_mark(stderr));
u3a_print_memory(stderr, "free lists", u3a_idle(u3R));
u3a_print_memory(stderr, "sweep", u3a_sweep());
fprintf(stderr, "\r\n");
fflush(stderr);
}
/* u3_worker_boot(): send startup message to manager.
*/
void
@ -927,6 +942,18 @@ u3_worker_boot(void)
u3l_log("work: play %" PRIu64 "\r\n", nex_d);
_worker_send(u3nc(c3__play, dat));
// measure/print static memory usage if < 1/2 of the loom is available
//
{
c3_w pen_w = u3a_open(u3R);
if ( !(pen_w > (1 << 28)) ) {
fprintf(stderr, "\r\n");
u3a_print_memory(stderr, "work: contiguous free space", pen_w);
_worker_static_grab();
}
}
}
/* main(): main() when run as urbit-worker