Disallow UI/IO thread blocking on any other thread.

base/synchronization/condition_variable_posix.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/synchronization/condition_variable.h"
 
 #include <errno.h>
 #include <sys/time.h>
 
 #include "base/logging.h"
 #include "base/synchronization/lock.h"
+#include "base/threading/thread_restrictions.h"
 #include "base/time.h"
 
 namespace base {
 
 ConditionVariable::ConditionVariable(Lock* user_lock)
     : user_mutex_(user_lock->lock_.os_lock())
 #if !defined(NDEBUG)
     , user_lock_(user_lock)
 #endif
 {
   int rv = pthread_cond_init(&condition_, NULL);
   DCHECK_EQ(0, rv);
 }
 
 ConditionVariable::~ConditionVariable() {
   int rv = pthread_cond_destroy(&condition_);
   DCHECK_EQ(0, rv);
 }
 
 void ConditionVariable::Wait() {
+  base::ThreadRestrictions::AssertWaitAllowed();
 #if !defined(NDEBUG)
   user_lock_->CheckHeldAndUnmark();
 #endif
   int rv = pthread_cond_wait(&condition_, user_mutex_);
   DCHECK_EQ(0, rv);
 #if !defined(NDEBUG)
   user_lock_->CheckUnheldAndMark();
 #endif
 }
 
 void ConditionVariable::TimedWait(const TimeDelta& max_time) {
+  base::ThreadRestrictions::AssertWaitAllowed();
   int64 usecs = max_time.InMicroseconds();
 
   // The timeout argument to pthread_cond_timedwait is in absolute time.
   struct timeval now;
   gettimeofday(&now, NULL);
 
   struct timespec abstime;
   abstime.tv_sec = now.tv_sec + (usecs / Time::kMicrosecondsPerSecond);
   abstime.tv_nsec = (now.tv_usec + (usecs % Time::kMicrosecondsPerSecond)) *
                     Time::kNanosecondsPerMicrosecond;
@@ skipping 15 matching lines @@
   int rv = pthread_cond_broadcast(&condition_);
   DCHECK_EQ(0, rv);
 }
 
 void ConditionVariable::Signal() {
   int rv = pthread_cond_signal(&condition_);
   DCHECK_EQ(0, rv);
 }
 
 }  // namespace base