adb: increase the FD table size on Win32.
128 maximum FDs is a pretty low limit, which can easily be exhausted by
port forwarding. Bump the maximum up to 2048, and add a test that checks
whether we can actually use a few hundred sockets.
Bug: https://code.google.com/p/android/issues/detail?id=12141
Bug: http://b/28246942
Change-Id: Ia4a2ff776e8e58ec13378756f19d80392679ece9
diff --git a/adb/sysdeps_test.cpp b/adb/sysdeps_test.cpp
index 78efea8..f0c334e 100644
--- a/adb/sysdeps_test.cpp
+++ b/adb/sysdeps_test.cpp
@@ -215,3 +215,32 @@
// Linux returns POLLIN | POLLHUP, Windows returns just POLLHUP.
EXPECT_EQ(POLLHUP, pfd.revents & POLLHUP);
}
+
+TEST_F(sysdeps_poll, fd_count) {
+ // https://code.google.com/p/android/issues/detail?id=12141
+ static constexpr int num_sockets = 512;
+ std::vector<int> sockets;
+ std::vector<adb_pollfd> pfds;
+ sockets.resize(num_sockets * 2);
+ for (int32_t i = 0; i < num_sockets; ++i) {
+ ASSERT_EQ(0, adb_socketpair(&sockets[i * 2])) << strerror(errno);
+ ASSERT_TRUE(WriteFdExactly(sockets[i * 2], &i, sizeof(i)));
+ adb_pollfd pfd;
+ pfd.events = POLLIN;
+ pfd.fd = sockets[i * 2 + 1];
+ pfds.push_back(pfd);
+ }
+
+ ASSERT_EQ(num_sockets, adb_poll(pfds.data(), pfds.size(), 0));
+ for (int i = 0; i < num_sockets; ++i) {
+ ASSERT_NE(0, pfds[i].revents & POLLIN);
+
+ int32_t buf[2] = { -1, -1 };
+ ASSERT_EQ(adb_read(pfds[i].fd, buf, sizeof(buf)), static_cast<ssize_t>(sizeof(int32_t)));
+ ASSERT_EQ(i, buf[0]);
+ }
+
+ for (int fd : sockets) {
+ adb_close(fd);
+ }
+}