Rewrite of sigslot that avoids vtables.

webrtc/base/sigslot.cc

Index: webrtc/base/sigslot.cc
diff --git a/webrtc/base/sigslot.cc b/webrtc/base/sigslot.cc
index 9628217dc0729b0847c97a4567650beae235afd8..11642c16e242dec106c1852945a6f115a86e2042 100644
--- a/webrtc/base/sigslot.cc
+++ b/webrtc/base/sigslot.cc
@@ -12,43 +12,8 @@ namespace sigslot {
 
 #ifdef _SIGSLOT_HAS_POSIX_THREADS
 
-multi_threaded_global::multi_threaded_global() {
-  pthread_mutex_init(get_mutex(), NULL);
-}
-
-multi_threaded_global::multi_threaded_global(const multi_threaded_global&) {
-}
-
-multi_threaded_global::~multi_threaded_global() = default;
-
-void multi_threaded_global::lock() {
-  pthread_mutex_lock(get_mutex());
-}
-
-void multi_threaded_global::unlock() {
-  pthread_mutex_unlock(get_mutex());
-}
-
-multi_threaded_local::multi_threaded_local() {
-  pthread_mutex_init(&m_mutex, NULL);
-}
-
-multi_threaded_local::multi_threaded_local(const multi_threaded_local&) {
-  pthread_mutex_init(&m_mutex, NULL);
-}
-
-multi_threaded_local::~multi_threaded_local() {
-  pthread_mutex_destroy(&m_mutex);
-}
-
-void multi_threaded_local::lock() {
-  pthread_mutex_lock(&m_mutex);
-}
-
-void multi_threaded_local::unlock() {
-  pthread_mutex_unlock(&m_mutex);
-}
+pthread_mutex_t multi_threaded_global::g_mutex = PTHREAD_MUTEX_INITIALIZER;

[Taylor Brandstetter, 2016/11/16 21:57:33]

We'll probably need to change this due to Chromium's global variable ban.

 
 #endif  // _SIGSLOT_HAS_POSIX_THREADS
 
-};  // namespace sigslot
+}  // namespace sigslot