Function GetMaxFileDescriptor

src/leveldb/util/env_posix_test.cc:78–83

File descriptors are small non-negative integers. Returns void so the implementation can use ASSERT_EQ.

//
// Returns void so the implementation can use ASSERT_EQ.
void GetMaxFileDescriptor(int* result_fd) {
  // Get the maximum file descriptor number.
  ::rlimit fd_rlimit;
  ASSERT_EQ(0, ::getrlimit(RLIMIT_NOFILE, &fd_rlimit));
  *result_fd = fd_rlimit.rlim_cur;
}

// Iterates through all possible FDs and returns the currently open ones.
//