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authorRickard Green <[email protected]>2016-03-29 14:52:34 +0200
committerRickard Green <[email protected]>2016-03-29 14:52:34 +0200
commitc921c91178c6626381ddd64249ec1ce670de2595 (patch)
tree2b3ea954da1bd709041d110c24b7caefb137ed45
parent9be7db7401d3e107f6f63cb02117d1ffa1db1311 (diff)
parent455cbcf2230715b37da14573cb9ba60a68c24a26 (diff)
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Merge branch 'rickard/port-sig-dropped-fix/OTP-13424'
* rickard/port-sig-dropped-fix/OTP-13424: Fix implementation of dropped signal to port
-rw-r--r--erts/emulator/beam/io.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/erts/emulator/beam/io.c b/erts/emulator/beam/io.c
index 797e4cdadc..324c05c766 100644
--- a/erts/emulator/beam/io.c
+++ b/erts/emulator/beam/io.c
@@ -1542,8 +1542,19 @@ erts_schedule_proc2port_signal(Process *c_p,
erts_smp_proc_lock(c_p, ERTS_PROC_LOCK_MAIN);
if (sched_res != 0) {
- if (refp)
+ if (refp) {
+ /*
+ * We need to restore the message queue save
+ * pointer to the beginning of the message queue
+ * since the caller now wont wait for a message
+ * containing the reference created above...
+ */
+ ASSERT(c_p);
+ erts_smp_proc_lock(c_p, ERTS_PROC_LOCKS_MSG_RECEIVE);
+ JOIN_MESSAGE(c_p);
+ erts_smp_proc_unlock(c_p, ERTS_PROC_LOCKS_MSG_RECEIVE);
*refp = NIL;
+ }
return ERTS_PORT_OP_DROPPED;
}
return ERTS_PORT_OP_SCHEDULED;