Adding upstream version 110.0.1.upstream/110.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 195 insertions, 0 deletions

diff --git a/nsprpub/pr/src/cplus/rcthread.h b/nsprpub/pr/src/cplus/rcthread.h
new file mode 100644
index 0000000000..b7716d4b99
--- /dev/null
+++ b/nsprpub/pr/src/cplus/rcthread.h
@@ -0,0 +1,195 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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/. */
+
+/* RCThread.h */
+
+#if defined(_RCTHREAD_H)
+#else
+#define _RCTHREAD_H
+
+#include "rcbase.h"
+
+#include <prthread.h>
+
+class RCInterval;
+
+class PR_IMPLEMENT(RCThreadPrivateData)
+{
+public:
+    RCThreadPrivateData();
+    RCThreadPrivateData(const RCThreadPrivateData&);
+
+    virtual ~RCThreadPrivateData();
+
+    virtual void Release() = 0;
+
+};  /* RCThreadPrivateData */
+
+class PR_IMPLEMENT(RCThread): public RCBase
+{
+public:
+
+    typedef enum
+    {
+        local = PR_LOCAL_THREAD, global = PR_GLOBAL_THREAD
+    } Scope;
+
+    typedef enum
+    {
+        joinable = PR_JOINABLE_THREAD, unjoinable = PR_UNJOINABLE_THREAD
+    } State;
+
+    typedef enum
+    {
+        first = PR_PRIORITY_FIRST,
+        low = PR_PRIORITY_LOW,
+        normal = PR_PRIORITY_NORMAL,
+        high = PR_PRIORITY_HIGH,
+        urgent = PR_PRIORITY_URGENT,
+        last = PR_PRIORITY_LAST
+    } Priority;
+
+    /*
+     * Create a new thread, providing scope and joinability state.
+     */
+    RCThread(Scope scope, State state, PRUint32 stackSize=0);
+
+    /*
+     * New threads are created in a suspended state. It must be 'started"
+     * before it begins execution in the class' defined 'RootFunction()'.
+     */
+    virtual PRStatus Start();
+
+    /*
+     * If a thread is created joinable, then the thread's object exists
+     * until join is called. The thread that calls join will block until
+     * the target thread returns from it's root function.
+     */
+    virtual PRStatus Join();
+
+    /*
+     * The priority of a newly created thread is the same as the creator.
+     * The priority may be changed either by the new thread itself, by
+     * the creator or any other arbitrary thread.
+     */
+    virtual void SetPriority(Priority newPriority);
+
+
+    /*
+     * Interrupt another thread, causing it to stop what it
+     * is doing and return with a well known error code.
+     */
+    virtual PRStatus Interrupt();
+
+    /*
+     * And in case a thread was interrupted and didn't get a chance
+     * to have the notification delivered, a way to cancel the pending
+     * status.
+     */
+    static void ClearInterrupt();
+
+    /*
+     * Methods to discover the attributes of an existing thread.
+     */
+    static PRThread *Self();
+    Scope GetScope() const;
+    State GetState() const;
+    Priority GetPriority() const;
+
+    /*
+     * Thread private data
+     */
+    static PRStatus NewPrivateIndex(PRUintn* index);
+
+    /*
+     * Getting it - if you want to modify, make a copy
+     */
+    static RCThreadPrivateData* GetPrivateData(PRUintn index);
+
+    /*
+     * Setting it to <empty> - deletes existing data
+     */
+    static PRStatus SetPrivateData(PRUintn index);
+
+    /*
+     * Setting it - runtime will make a copy, freeing old iff necessary
+     */
+    static PRStatus SetPrivateData(PRUintn index, RCThreadPrivateData* data);
+
+    /*
+     * Scheduling control
+     */
+    static PRStatus Sleep(const RCInterval& ticks);
+
+    friend void nas_Root(void*);
+    friend class RCPrimordialThread;
+protected:
+
+    /*
+     * The instantiator of a class must not call the destructor. The base
+     * implementation of Join will, and if the thread is created unjoinable,
+     * then the code that called the RootFunction will call the desctructor.
+     */
+    virtual ~RCThread();
+
+private:
+
+    /*
+     * This is where a newly created thread begins execution. Returning
+     * from this function is equivalent to terminating the thread.
+     */
+    virtual void RootFunction() = 0;
+
+    PRThread *identity;
+
+    /* Threads are unstarted until started - pretty startling */
+    enum {ex_unstarted, ex_started} execution;
+
+    /* There is no public default constructor or copy constructor */
+    RCThread();
+    RCThread(const RCThread&);
+
+    /* And there is no assignment operator */
+    void operator=(const RCThread&);
+
+public:
+    static RCPrimordialThread *WrapPrimordialThread();
+
+};
+
+/*
+** class RCPrimordialThread
+*/
+class PR_IMPLEMENT(RCPrimordialThread): public RCThread
+{
+public:
+    /*
+    ** The primordial thread can (optionally) wait for all created
+    ** threads to terminate before allowing the process to exit.
+    ** Not calling Cleanup() before returning from main() will cause
+    ** the immediate termination of the entire process, including
+    ** any running threads.
+    */
+    static PRStatus Cleanup();
+
+    /*
+    ** Only the primordial thread is allowed to adjust the number of
+    ** virtual processors of the runtime. It's a lame security thing.
+    */
+    static PRStatus SetVirtualProcessors(PRIntn count=10);
+
+    friend class RCThread;
+private:
+    /*
+    ** None other than the runtime can create of destruct
+    ** a primordial thread. It is fabricated by the runtime
+    ** to wrap the thread that initiated the application.
+    */
+    RCPrimordialThread();
+    ~RCPrimordialThread();
+    void RootFunction();
+};  /* RCPrimordialThread */
+
+#endif /* defined(_RCTHREAD_H) */