Only spawn one binder thread for cmd.
To work around race conditions in libbinder when
spawning new threads while being shut down.
Bug: 36066697
Test: cmd still works
Change-Id: I71c8d1aac29a1bf65d54023a4ed39d943ad54c98
diff --git a/cmds/cmd/cmd.cpp b/cmds/cmd/cmd.cpp
index 73d274f..7e05d72 100644
--- a/cmds/cmd/cmd.cpp
+++ b/cmds/cmd/cmd.cpp
@@ -123,6 +123,13 @@
{
signal(SIGPIPE, SIG_IGN);
sp<ProcessState> proc = ProcessState::self();
+ // setThreadPoolMaxThreadCount(0) actually tells the kernel it's
+ // not allowed to spawn any additional threads, but we still spawn
+ // a binder thread from userspace when we call startThreadPool().
+ // This is safe because we only have 2 callbacks, neither of which
+ // block.
+ // See b/36066697 for rationale
+ proc->setThreadPoolMaxThreadCount(0);
proc->startThreadPool();
sp<IServiceManager> sm = defaultServiceManager();