Add m-esr52 at 52.6.0

1 files changed, 95 insertions, 0 deletions

diff --git a/toolkit/profile/nsProfileLock.h b/toolkit/profile/nsProfileLock.h
new file mode 100644
index 000000000..e78a3577e
--- /dev/null
+++ b/toolkit/profile/nsProfileLock.h
@@ -0,0 +1,95 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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 __nsProfileLock_h___
+#define __nsProfileLock_h___
+
+#include "nsIFile.h"
+
+class nsIProfileUnlocker;
+
+#if defined (XP_WIN)
+#include <windows.h>
+#endif
+
+#if defined (XP_UNIX)
+#include <signal.h>
+#include "prclist.h"
+#endif
+
+class nsProfileLock
+#if defined (XP_UNIX)
+  : public PRCList
+#endif
+{
+public:
+                            nsProfileLock();
+                            nsProfileLock(nsProfileLock& src);
+
+                            ~nsProfileLock();
+ 
+    nsProfileLock&          operator=(nsProfileLock& rhs);
+                       
+    /**
+     * Attempt to lock a profile directory.
+     *
+     * @param aProfileDir  [in] The profile directory to lock.
+     * @param aUnlocker    [out] Optional. This is only returned when locking
+     *                     fails with NS_ERROR_FILE_ACCESS_DENIED, and may not
+     *                     be returned at all.
+     * @throws NS_ERROR_FILE_ACCESS_DENIED if the profile is locked.
+     */
+    nsresult                Lock(nsIFile* aProfileDir, nsIProfileUnlocker* *aUnlocker);
+
+    /**
+     * Unlock a profile directory.  If you're unlocking the directory because
+     * the application is in the process of shutting down because of a fatal
+     * signal, set aFatalSignal to true.
+     */
+    nsresult                Unlock(bool aFatalSignal = false);
+
+    /**
+     * Get the modification time of a replaced profile lock, otherwise 0.
+     */
+    nsresult                GetReplacedLockTime(PRTime* aResult);
+
+private:
+    bool                    mHaveLock;
+    PRTime                  mReplacedLockTime;
+
+#if defined (XP_WIN)
+    HANDLE                  mLockFileHandle;
+#elif defined (XP_UNIX)
+
+    struct RemovePidLockFilesExiting {
+        RemovePidLockFilesExiting() {}
+        ~RemovePidLockFilesExiting() {
+            RemovePidLockFiles(false);
+        }
+    };
+
+    static void             RemovePidLockFiles(bool aFatalSignal);
+    static void             FatalSignalHandler(int signo
+#ifdef SA_SIGINFO
+                                               , siginfo_t *info, void *context
+#endif
+                                               );
+    static PRCList          mPidLockList;
+
+    nsresult                LockWithFcntl(nsIFile *aLockFile);
+
+    /**
+     * @param aHaveFcntlLock if true, we've already acquired an fcntl lock so this
+     * lock is merely an "obsolete" lock to keep out old Firefoxes
+     */
+    nsresult                LockWithSymlink(nsIFile *aLockFile, bool aHaveFcntlLock);
+
+    char*                   mPidLockFileName;
+    int                     mLockFileDesc;
+#endif
+
+};
+
+#endif /* __nsProfileLock_h___ */