/* -*- 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/. */ #ifndef mozilla_ipc_SharedMemoryBasic_mach_h #define mozilla_ipc_SharedMemoryBasic_mach_h #include "base/file_descriptor_posix.h" #include "base/process.h" #include "SharedMemory.h" #include <mach/port.h> // // This is a low-level wrapper around platform shared memory. Don't // use it directly; use Shmem allocated through IPDL interfaces. // class MachPortSender; class ReceivePort; namespace mozilla { namespace ipc { class SharedMemoryBasic final : public SharedMemoryCommon<mach_port_t> { public: static void SetupMachMemory(pid_t pid, ReceivePort* listen_port, MachPortSender* listen_port_ack, MachPortSender* send_port, ReceivePort* send_port_ack, bool pidIsParent); static void CleanupForPid(pid_t pid); static void Shutdown(); SharedMemoryBasic(); virtual bool SetHandle(const Handle& aHandle) override; virtual bool Create(size_t aNbytes) override; virtual bool Map(size_t nBytes) override; virtual void CloseHandle() override; virtual void* memory() const override { return mMemory; } virtual SharedMemoryType Type() const override { return TYPE_BASIC; } static Handle NULLHandle() { return Handle(); } virtual bool IsHandleValid(const Handle &aHandle) const override; virtual bool ShareToProcess(base::ProcessId aProcessId, Handle* aNewHandle) override; private: ~SharedMemoryBasic(); void Unmap(); mach_port_t mPort; // Pointer to mapped region, null if unmapped. void *mMemory; }; } // namespace ipc } // namespace mozilla #endif // ifndef mozilla_ipc_SharedMemoryBasic_mach_h