15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2011 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "chrome/common/multi_process_lock.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/logging.h" 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/mac/scoped_cftyperef.h" 9c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#include "base/strings/sys_string_conversions.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <servers/bootstrap.h> 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class MultiProcessLockMac : public MultiProcessLock { 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) explicit MultiProcessLockMac(const std::string& name) : name_(name) { } 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~MultiProcessLockMac() { 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (port_ != NULL) { 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Unlock(); 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual bool TryLock() OVERRIDE { 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (port_ != NULL) { 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DLOG(ERROR) << "MultiProcessLock is already locked - " << name_; 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (name_.length() >= BOOTSTRAP_MAX_NAME_LEN) { 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) LOG(ERROR) << "Socket name too long (" << name_.length() 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) << " >= " << BOOTSTRAP_MAX_NAME_LEN << ") - " << name_; 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CFStringRef cf_name(base::SysUTF8ToCFStringRef(name_)); 36eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch base::ScopedCFTypeRef<CFStringRef> scoped_cf_name(cf_name); 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) port_.reset(CFMessagePortCreateLocal(NULL, cf_name, NULL, NULL, NULL)); 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return port_ != NULL; 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 412a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual void Unlock() OVERRIDE { 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (port_ == NULL) { 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DLOG(ERROR) << "Over-unlocked MultiProcessLock - " << name_; 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) port_.reset(); 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string name_; 51eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch base::ScopedCFTypeRef<CFMessagePortRef> port_; 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(MultiProcessLockMac); 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)MultiProcessLock* MultiProcessLock::Create(const std::string &name) { 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return new MultiProcessLockMac(name); 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 58