Make port picking functions overridable

1 files changed, 3 insertions, 3 deletions

diff --git a/test/core/util/port.h b/test/core/util/port.h
index 154e8f830c..0e15f397a5 100644
--- a/test/core/util/port.h
+++ b/test/core/util/port.h
@@ -25,16 +25,16 @@ extern "C" {
 
 /* pick a port number that is currently unused by either tcp or udp. return
    0 on failure. */
-int grpc_pick_unused_port(void);
+extern int (*grpc_pick_unused_port)(void);
 /* pick a port number that is currently unused by either tcp or udp. abort
    on failure. */
-int grpc_pick_unused_port_or_die(void);
+extern int (*grpc_pick_unused_port_or_die)(void);
 
 /* Return a port which was previously returned by grpc_pick_unused_port().
  * Implementations of grpc_pick_unused_port() backed by a portserver may limit
  * the total number of ports available; this lets a binary return its allocated
  * ports back to the server if it is going to allocate a large number. */
-void grpc_recycle_unused_port(int port);
+extern void (*grpc_recycle_unused_port)(int port);
 
 #ifdef __cplusplus
 }