1 files changed, 59 insertions, 0 deletions
diff --git a/chromium/chrome/common/multi_process_lock_mac.cc b/chromium/chrome/common/multi_process_lock_mac.cc
new file mode 100644
index 00000000000..3ec3e3236ca
--- /dev/null
+++ b/chromium/chrome/common/multi_process_lock_mac.cc
@@ -0,0 +1,59 @@
+// 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 "chrome/common/multi_process_lock.h"
+
+#include "base/logging.h"
+#include "base/mac/scoped_cftyperef.h"
+#include "base/macros.h"
+#include "base/strings/sys_string_conversions.h"
+
+#include <servers/bootstrap.h>
+
+class MultiProcessLockMac : public MultiProcessLock {
+ public:
+  explicit MultiProcessLockMac(const std::string& name) : name_(name) { }
+
+  ~MultiProcessLockMac() override {
+    if (port_ != NULL) {
+      Unlock();
+    }
+  }
+
+  bool TryLock() override {
+    if (port_ != NULL) {
+      DLOG(ERROR) << "MultiProcessLock is already locked - " << name_;
+      return true;
+    }
+
+    if (name_.length() >= BOOTSTRAP_MAX_NAME_LEN) {
+      LOG(ERROR) << "Socket name too long (" << name_.length()
+                 << " >= " << BOOTSTRAP_MAX_NAME_LEN << ") - " << name_;
+      return false;
+    }
+
+    CFStringRef cf_name(base::SysUTF8ToCFStringRef(name_));
+    base::ScopedCFTypeRef<CFStringRef> scoped_cf_name(cf_name);
+    port_.reset(CFMessagePortCreateLocal(NULL, cf_name, NULL, NULL, NULL));
+    return port_ != NULL;
+  }
+
+  void Unlock() override {
+    if (port_ == NULL) {
+      DLOG(ERROR) << "Over-unlocked MultiProcessLock - " << name_;
+      return;
+    }
+    port_.reset();
+  }
+
+ private:
+  std::string name_;
+  base::ScopedCFTypeRef<CFMessagePortRef> port_;
+  DISALLOW_COPY_AND_ASSIGN(MultiProcessLockMac);
+};
+
+std::unique_ptr<MultiProcessLock> MultiProcessLock::Create(
+    const std::string& name) {
+  return std::make_unique<MultiProcessLockMac>(name);
+}