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-rw-r--r--erts/emulator/beam/beam_bif_load.c12
-rw-r--r--erts/emulator/beam/bif.c24
-rw-r--r--erts/emulator/beam/erl_process.c70
-rw-r--r--erts/emulator/beam/erl_process.h4
-rw-r--r--erts/emulator/test/process_SUITE.erl40
5 files changed, 121 insertions, 29 deletions
diff --git a/erts/emulator/beam/beam_bif_load.c b/erts/emulator/beam/beam_bif_load.c
index 1ca405961f..1dbf6f9b92 100644
--- a/erts/emulator/beam/beam_bif_load.c
+++ b/erts/emulator/beam/beam_bif_load.c
@@ -175,8 +175,12 @@ check_process_code_2(BIF_ALIST_2)
Eterm res;
if (internal_pid_index(BIF_ARG_1) >= erts_max_processes)
goto error;
- rp = erts_pid2proc_not_running(BIF_P, ERTS_PROC_LOCK_MAIN,
- BIF_ARG_1, ERTS_PROC_LOCK_MAIN);
+#ifdef ERTS_SMP
+ rp = erts_pid2proc_suspend(BIF_P, ERTS_PROC_LOCK_MAIN,
+ BIF_ARG_1, ERTS_PROC_LOCK_MAIN);
+#else
+ rp = erts_pid2proc(BIF_P, 0, BIF_ARG_1, 0);
+#endif
if (!rp) {
BIF_RET(am_false);
}
@@ -187,8 +191,10 @@ check_process_code_2(BIF_ALIST_2)
modp = erts_get_module(BIF_ARG_2);
res = check_process_code(rp, modp);
#ifdef ERTS_SMP
- if (BIF_P != rp)
+ if (BIF_P != rp) {
+ erts_resume(rp, ERTS_PROC_LOCK_MAIN);
erts_smp_proc_unlock(rp, ERTS_PROC_LOCK_MAIN);
+ }
#endif
BIF_RET(res);
}
diff --git a/erts/emulator/beam/bif.c b/erts/emulator/beam/bif.c
index b3325d635b..8c35644125 100644
--- a/erts/emulator/beam/bif.c
+++ b/erts/emulator/beam/bif.c
@@ -3215,20 +3215,32 @@ BIF_RETTYPE garbage_collect_1(BIF_ALIST_1)
BIF_ERROR(BIF_P, BADARG);
}
- rp = erts_pid2proc_not_running(BIF_P, ERTS_PROC_LOCK_MAIN,
+ if (BIF_P->id == BIF_ARG_1)
+ rp = BIF_P;
+ else {
+#ifdef ERTS_SMP
+ rp = erts_pid2proc_suspend(BIF_P, ERTS_PROC_LOCK_MAIN,
BIF_ARG_1, ERTS_PROC_LOCK_MAIN);
- if (!rp)
- BIF_RET(am_false);
- if (rp == ERTS_PROC_LOCK_BUSY)
- ERTS_BIF_YIELD1(bif_export[BIF_garbage_collect_1], BIF_P, BIF_ARG_1);
+ if (rp == ERTS_PROC_LOCK_BUSY)
+ ERTS_BIF_YIELD1(bif_export[BIF_garbage_collect_1], BIF_P, BIF_ARG_1);
+#else
+ rp = erts_pid2proc(BIF_P, 0, BIF_ARG_1, 0);
+#endif
+ if (!rp)
+ BIF_RET(am_false);
+ }
/* The GC cost is taken for the process executing this BIF. */
FLAGS(rp) |= F_NEED_FULLSWEEP;
reds = erts_garbage_collect(rp, 0, rp->arg_reg, rp->arity);
- if (BIF_P != rp)
+#ifdef ERTS_SMP
+ if (BIF_P != rp) {
+ erts_resume(rp, ERTS_PROC_LOCK_MAIN);
erts_smp_proc_unlock(rp, ERTS_PROC_LOCK_MAIN);
+ }
+#endif
BIF_RET2(am_true, reds);
}
diff --git a/erts/emulator/beam/erl_process.c b/erts/emulator/beam/erl_process.c
index 31f23d3978..8a56976905 100644
--- a/erts/emulator/beam/erl_process.c
+++ b/erts/emulator/beam/erl_process.c
@@ -3887,21 +3887,9 @@ handle_pend_sync_suspend(Process *suspendee,
}
}
-/*
- * Like erts_pid2proc() but:
- *
- * * At least ERTS_PROC_LOCK_MAIN have to be held on c_p.
- * * At least ERTS_PROC_LOCK_MAIN have to be taken on pid.
- * * It also waits for proc to be in a state != running and garbing.
- * * If ERTS_PROC_LOCK_BUSY is returned, the calling process has to
- * yield (ERTS_BIF_YIELD[0-3]()). c_p might in this case have been
- * suspended.
- */
-
-
-Process *
-erts_pid2proc_not_running(Process *c_p, ErtsProcLocks c_p_locks,
- Eterm pid, ErtsProcLocks pid_locks)
+static Process *
+pid2proc_not_running(Process *c_p, ErtsProcLocks c_p_locks,
+ Eterm pid, ErtsProcLocks pid_locks, int suspend)
{
Process *rp;
int unlock_c_p_status;
@@ -3928,7 +3916,7 @@ erts_pid2proc_not_running(Process *c_p, ErtsProcLocks c_p_locks,
c_p->suspendee = NIL;
ASSERT(c_p->flags & F_P2PNR_RESCHED);
c_p->flags &= ~F_P2PNR_RESCHED;
- if (rp)
+ if (!suspend && rp)
resume_process(rp);
}
else {
@@ -3992,6 +3980,8 @@ erts_pid2proc_not_running(Process *c_p, ErtsProcLocks c_p_locks,
}
/* rp is not running and we got the locks we want... */
+ if (suspend)
+ suspend_process(rp_rq, rp);
}
erts_smp_runqs_unlock(cp_rq, rp_rq);
}
@@ -4004,6 +3994,35 @@ erts_pid2proc_not_running(Process *c_p, ErtsProcLocks c_p_locks,
return rp;
}
+
+/*
+ * Like erts_pid2proc() but:
+ *
+ * * At least ERTS_PROC_LOCK_MAIN have to be held on c_p.
+ * * At least ERTS_PROC_LOCK_MAIN have to be taken on pid.
+ * * It also waits for proc to be in a state != running and garbing.
+ * * If ERTS_PROC_LOCK_BUSY is returned, the calling process has to
+ * yield (ERTS_BIF_YIELD[0-3]()). c_p might in this case have been
+ * suspended.
+ */
+Process *
+erts_pid2proc_not_running(Process *c_p, ErtsProcLocks c_p_locks,
+ Eterm pid, ErtsProcLocks pid_locks)
+{
+ return pid2proc_not_running(c_p, c_p_locks, pid, pid_locks, 0);
+}
+
+/*
+ * Like erts_pid2proc_not_running(), but hands over the process
+ * in a suspended state unless (c_p is looked up).
+ */
+Process *
+erts_pid2proc_suspend(Process *c_p, ErtsProcLocks c_p_locks,
+ Eterm pid, ErtsProcLocks pid_locks)
+{
+ return pid2proc_not_running(c_p, c_p_locks, pid, pid_locks, 1);
+}
+
/*
* erts_pid2proc_nropt() is normally the same as
* erts_pid2proc_not_running(). However it is only
@@ -4117,6 +4136,21 @@ handle_pend_bif_async_suspend(Process *suspendee,
}
}
+#else
+
+/*
+ * Non-smp version of erts_pid2proc_suspend().
+ */
+Process *
+erts_pid2proc_suspend(Process *c_p, ErtsProcLocks c_p_locks,
+ Eterm pid, ErtsProcLocks pid_locks)
+{
+ Process *rp = erts_pid2proc(c_p, c_p_locks, pid, pid_locks);
+ if (rp)
+ erts_suspend(rp, pid_locks, NULL);
+ return rp;
+}
+
#endif /* ERTS_SMP */
/*
@@ -4650,7 +4684,7 @@ internal_add_to_runq(ErtsRunQueue *runq, Process *p)
if (p->status_flags & ERTS_PROC_SFLG_INRUNQ)
return NULL;
else if (p->runq_flags & ERTS_PROC_RUNQ_FLG_RUNNING) {
- ASSERT(p->rcount == 0);
+ ASSERT(ERTS_PROC_IS_EXITING(p) || p->rcount == 0);
ERTS_DBG_CHK_PROCS_RUNQ_NOPROC(runq, p);
p->status_flags |= ERTS_PROC_SFLG_PENDADD2SCHEDQ;
return NULL;
@@ -4661,7 +4695,7 @@ internal_add_to_runq(ErtsRunQueue *runq, Process *p)
ERTS_DBG_CHK_PROCS_RUNQ_NOPROC(runq, p);
#ifndef ERTS_SMP
/* Never schedule a suspended process (ok in smp case) */
- ASSERT(p->rcount == 0);
+ ASSERT(ERTS_PROC_IS_EXITING(p) || p->rcount == 0);
add_runq = runq;
#else
ASSERT(!p->bound_runq || p->bound_runq == p->run_queue);
diff --git a/erts/emulator/beam/erl_process.h b/erts/emulator/beam/erl_process.h
index 334ae5573f..296acc7367 100644
--- a/erts/emulator/beam/erl_process.h
+++ b/erts/emulator/beam/erl_process.h
@@ -1535,6 +1535,10 @@ erts_get_atom_cache_map(Process *c_p)
}
#endif
+Process *erts_pid2proc_suspend(Process *,
+ ErtsProcLocks,
+ Eterm,
+ ErtsProcLocks);
#ifdef ERTS_SMP
Process *erts_pid2proc_not_running(Process *,
diff --git a/erts/emulator/test/process_SUITE.erl b/erts/emulator/test/process_SUITE.erl
index 36bae908aa..f68e712268 100644
--- a/erts/emulator/test/process_SUITE.erl
+++ b/erts/emulator/test/process_SUITE.erl
@@ -50,7 +50,8 @@
processes_last_call_trap/1, processes_gc_trap/1,
processes_term_proc_list/1,
otp_7738_waiting/1, otp_7738_suspended/1,
- otp_7738_resume/1]).
+ otp_7738_resume/1,
+ garb_other_running/1]).
-export([prio_server/2, prio_client/2]).
-export([init_per_testcase/2, end_per_testcase/2]).
@@ -72,7 +73,7 @@ all() ->
bad_register, garbage_collect, process_info_messages,
process_flag_badarg, process_flag_heap_size,
spawn_opt_heap_size, otp_6237, {group, processes_bif},
- {group, otp_7738}].
+ {group, otp_7738}, garb_other_running].
groups() ->
[{t_exit_2, [],
@@ -2116,6 +2117,41 @@ otp_7738_test(Type) ->
end,
?line ok.
+gor(Reds, Stop) ->
+ receive
+ {From, reds} ->
+ From ! {reds, Reds, self()},
+ gor(Reds+1, Stop);
+ {From, Stop} ->
+ From ! {stopped, Stop, Reds, self()}
+ after 0 ->
+ gor(Reds+1, Stop)
+ end.
+
+garb_other_running(Config) when is_list(Config) ->
+ ?line Stop = make_ref(),
+ ?line {Pid, Mon} = spawn_monitor(fun () -> gor(0, Stop) end),
+ ?line Reds = lists:foldl(fun (_, OldReds) ->
+ ?line erlang:garbage_collect(Pid),
+ ?line receive after 1 -> ok end,
+ ?line Pid ! {self(), reds},
+ ?line receive
+ {reds, NewReds, Pid} ->
+ ?line true = (NewReds > OldReds),
+ ?line NewReds
+ end
+ end,
+ 0,
+ lists:seq(1, 10000)),
+ ?line receive after 1 -> ok end,
+ ?line Pid ! {self(), Stop},
+ ?line receive
+ {stopped, Stop, StopReds, Pid} ->
+ ?line true = (StopReds > Reds)
+ end,
+ ?line receive {'DOWN', Mon, process, Pid, normal} -> ok end,
+ ?line ok.
+
%% Internal functions
wait_until(Fun) ->
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-22 19:28:02 +0000