getProcessFreezeInfo reads more info from kernel

Improve primitive binder function to check if a process has any pending
binder transactions so that the freezer policy can choose to wait and
drain those pending transactions.

Bug: 198493121
Test: app launch/foreground/background stress test
Change-Id: Ia7ce6899ddaeb8e8453b0b8f3536d129b6b761d3

1 files changed, 19 insertions, 0 deletions

diff --git a/libs/binder/IPCThreadState.cpp b/libs/binder/IPCThreadState.cpp
index fa9f3a9749..9e04ffeb11 100644
--- a/libs/binder/IPCThreadState.cpp
+++ b/libs/binder/IPCThreadState.cpp
@@ -1426,6 +1426,25 @@ status_t IPCThreadState::getProcessFreezeInfo(pid_t pid, bool *sync_received, bo
     return ret;
 }
 
+#ifndef __ANDROID_VNDK__
+status_t IPCThreadState::getProcessFreezeInfo(pid_t pid, uint32_t *sync_received,
+                                              uint32_t *async_received)
+{
+    int ret = 0;
+    binder_frozen_status_info info;
+    info.pid = pid;
+
+#if defined(__ANDROID__)
+    if (ioctl(self()->mProcess->mDriverFD, BINDER_GET_FROZEN_INFO, &info) < 0)
+        ret = -errno;
+#endif
+    *sync_received = info.sync_recv;
+    *async_received = info.async_recv;
+
+    return ret;
+}
+#endif
+
 status_t IPCThreadState::freeze(pid_t pid, bool enable, uint32_t timeout_ms) {
     struct binder_freeze_info info;
     int ret = 0;