Thread suspension: Implement for Linux

src/trusted/service_runtime/nacl_app_thread.c

Index: src/trusted/service_runtime/nacl_app_thread.c
diff --git a/src/trusted/service_runtime/nacl_app_thread.c b/src/trusted/service_runtime/nacl_app_thread.c
index 00e7c37b507537014c5f232f3d28d26ee1c6406b..cce568baa71147c38ae523e01081b4478d73d7c5 100644
--- a/src/trusted/service_runtime/nacl_app_thread.c
+++ b/src/trusted/service_runtime/nacl_app_thread.c
@@ -21,28 +21,6 @@
 #include "native_client/src/trusted/service_runtime/nacl_syscall_common.h"
 
 
-void NaClAppThreadSetSuspendState(struct NaClAppThread *natp,
-                                  enum NaClSuspendState old_state,
-                                  enum NaClSuspendState new_state) {
-#if NACL_WINDOWS
-  NaClXMutexLock(&natp->mu);
-  while ((natp->suspend_state & NACL_APP_THREAD_SUSPENDING) != 0) {
-    /*
-     * We are being suspended, but SuspendThread() has not taken effect yet.
-     */
-    NaClXCondVarWait(&natp->cv, &natp->mu);
-  }
-  DCHECK(natp->suspend_state == old_state);
-  natp->suspend_state = new_state;
-  NaClXMutexUnlock(&natp->mu);
-#else
-  UNREFERENCED_PARAMETER(natp);
-  UNREFERENCED_PARAMETER(old_state);
-  UNREFERENCED_PARAMETER(new_state);
-#endif
-}
-
-
 void WINAPI NaClThreadLauncher(void *state) {
   struct NaClAppThread *natp = (struct NaClAppThread *) state;
   uint32_t thread_idx;
@@ -222,9 +200,7 @@ int NaClAppThreadCtor(struct NaClAppThread  *natp,
     goto cleanup_cv;
   }
 
-#if NACL_WINDOWS
   natp->suspend_state = NACL_APP_THREAD_TRUSTED;
-#endif
 
   natp->thread_num = -1;  /* illegal index */
   natp->sys_tls = sys_tls;