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-rw-r--r--erts/emulator/beam/io.c26
1 files changed, 25 insertions, 1 deletions
diff --git a/erts/emulator/beam/io.c b/erts/emulator/beam/io.c
index 35b194f927..609fe9f5fb 100644
--- a/erts/emulator/beam/io.c
+++ b/erts/emulator/beam/io.c
@@ -1132,7 +1132,7 @@ int erts_write_to_port(Eterm caller_id, Port *p, Eterm list)
Uint size;
int fpe_was_unmasked;
- ERTS_SMP_LC_ASSERT(erts_lc_is_port_locked(p));
+ ERTS_SMP_LC_ASSERT(erts_lc_is_port_locked(p) || ERTS_IS_CRASH_DUMPING);
ERTS_SMP_CHK_NO_PROC_LOCKS;
p->caller = caller_id;
@@ -5235,3 +5235,27 @@ erl_drv_getenv(char *key, char *value, size_t *value_size)
{
return erts_sys_getenv_raw(key, value, value_size);
}
+
+/* get heart_port
+ * used by erl_crash_dump
+ * - uses the fact that heart_port is registered when starting heart
+ */
+
+Port *erts_get_heart_port() {
+
+ Port* port;
+ Uint ix;
+
+ for(ix = 0; ix < erts_max_ports; ix++) {
+ port = &erts_port[ix];
+ /* only examine undead or alive ports */
+ if (port->status & ERTS_PORT_SFLGS_DEAD)
+ continue;
+ /* immediate atom compare */
+ if (port->reg && port->reg->name == am_heart_port) {
+ return port;
+ }
+ }
+
+ return NULL;
+}