Add m-esr52 at 52.6.0

1 files changed, 81 insertions, 0 deletions

diff --git a/js/src/threading/posix/MutexImpl.cpp b/js/src/threading/posix/MutexImpl.cpp
new file mode 100644
index 000000000..1d406400f
--- /dev/null
+++ b/js/src/threading/posix/MutexImpl.cpp
@@ -0,0 +1,81 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <errno.h>
+#include <pthread.h>
+#include <stdio.h>
+
+#include "js/Utility.h"
+
+#include "threading/Mutex.h"
+#include "threading/posix/MutexPlatformData.h"
+
+#define TRY_CALL_PTHREADS(call, msg)            \
+  {                                             \
+    int result = (call);                        \
+    if (result != 0) {                          \
+      errno = result;                           \
+      perror(msg);                              \
+      MOZ_CRASH(msg);                           \
+    }                                           \
+  }
+
+js::detail::MutexImpl::MutexImpl()
+{
+  AutoEnterOOMUnsafeRegion oom;
+  platformData_ = js_new<PlatformData>();
+  if (!platformData_)
+    oom.crash("js::detail::MutexImpl::MutexImpl");
+
+  pthread_mutexattr_t* attrp = nullptr;
+
+#ifdef DEBUG
+  pthread_mutexattr_t attr;
+
+  TRY_CALL_PTHREADS(pthread_mutexattr_init(&attr),
+                    "js::detail::MutexImpl::MutexImpl: pthread_mutexattr_init failed");
+
+  TRY_CALL_PTHREADS(pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK),
+                    "js::detail::MutexImpl::MutexImpl: pthread_mutexattr_settype failed");
+
+  attrp = &attr;
+#endif
+
+  TRY_CALL_PTHREADS(pthread_mutex_init(&platformData()->ptMutex, attrp),
+                    "js::detail::MutexImpl::MutexImpl: pthread_mutex_init failed");
+
+#ifdef DEBUG
+  TRY_CALL_PTHREADS(pthread_mutexattr_destroy(&attr),
+                    "js::detail::MutexImpl::MutexImpl: pthread_mutexattr_destroy failed");
+#endif
+}
+
+js::detail::MutexImpl::~MutexImpl()
+{
+  if (!platformData_)
+    return;
+
+  TRY_CALL_PTHREADS(pthread_mutex_destroy(&platformData()->ptMutex),
+                    "js::detail::MutexImpl::~MutexImpl: pthread_mutex_destroy failed");
+
+  js_delete(platformData());
+}
+
+void
+js::detail::MutexImpl::lock()
+{
+  TRY_CALL_PTHREADS(pthread_mutex_lock(&platformData()->ptMutex),
+                    "js::detail::MutexImpl::lock: pthread_mutex_lock failed");
+}
+
+void
+js::detail::MutexImpl::unlock()
+{
+  TRY_CALL_PTHREADS(pthread_mutex_unlock(&platformData()->ptMutex),
+                    "js::detail::MutexImpl::unlock: pthread_mutex_unlock failed");
+}
+
+#undef TRY_CALL_PTHREADS