/* $Id: thread2-r0drv-solaris.c 54362 2015-02-23 01:33:02Z vboxsync $ */
/** @file
 * IPRT - Threads (Part 2), Ring-0 Driver, Solaris.
 */

/*
 * Copyright (C) 2006-2014 Oracle Corporation
 *
 * This file is part of VirtualBox Open Source Edition (OSE), as
 * available from http://www.virtualbox.org. This file is free software;
 * you can redistribute it and/or modify it under the terms of the GNU
 * General Public License (GPL) as published by the Free Software
 * Foundation, in version 2 as it comes in the "COPYING" file of the
 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
 *
 * The contents of this file may alternatively be used under the terms
 * of the Common Development and Distribution License Version 1.0
 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
 * VirtualBox OSE distribution, in which case the provisions of the
 * CDDL are applicable instead of those of the GPL.
 *
 * You may elect to license modified versions of this file under the
 * terms and conditions of either the GPL or the CDDL or both.
 */


/*******************************************************************************
*   Header Files                                                               *
*******************************************************************************/
#include "the-solaris-kernel.h"
#include "internal/iprt.h"
#include <iprt/thread.h>
#include <iprt/process.h>

#include <iprt/assert.h>
#include <iprt/err.h>
#include "internal/thread.h"



DECLHIDDEN(int) rtThreadNativeInit(void)
{
    return VINF_SUCCESS;
}


RTDECL(RTTHREAD) RTThreadSelf(void)
{
    return rtThreadGetByNative(RTThreadNativeSelf());
}


DECLHIDDEN(int) rtThreadNativeSetPriority(PRTTHREADINT pThread, RTTHREADTYPE enmType)
{
    int iPriority;
    switch (enmType)
    {
        case RTTHREADTYPE_INFREQUENT_POLLER:    iPriority = 60;             break;
        case RTTHREADTYPE_EMULATION:            iPriority = 66;             break;
        case RTTHREADTYPE_DEFAULT:              iPriority = 72;             break;
        case RTTHREADTYPE_MSG_PUMP:             iPriority = 78;             break;
        case RTTHREADTYPE_IO:                   iPriority = 84;             break;
        case RTTHREADTYPE_TIMER:                iPriority = 99;             break;
        default:
            AssertMsgFailed(("enmType=%d\n", enmType));
            return VERR_INVALID_PARAMETER;
    }

    kthread_t *pCurThread = curthread;
    Assert(pCurThread);
    thread_lock(pCurThread);
    thread_change_pri(pCurThread, iPriority, 0);
    thread_unlock(pCurThread);
    return VINF_SUCCESS;
}


DECLHIDDEN(int) rtThreadNativeAdopt(PRTTHREADINT pThread)
{
    NOREF(pThread);
    /* There is nothing special that needs doing here, but the
       user really better know what he's cooking. */
    return VINF_SUCCESS;
}


DECLHIDDEN(void) rtThreadNativeWaitKludge(PRTTHREADINT pThread)
{
    thread_join(pThread->tid);
}


DECLHIDDEN(void) rtThreadNativeDestroy(PRTTHREADINT pThread)
{
    NOREF(pThread);
}


/**
 * Native thread main function.
 *
 * @param   pvThreadInt     The thread structure.
 */
static void rtThreadNativeMain(void *pvThreadInt)
{
    PRTTHREADINT pThreadInt = (PRTTHREADINT)pvThreadInt;

    /* thread_join takes the t_did value. There seems to be no interface for
       retrieving t_did, so we have to gamble on the Solaris guys not messing
       up its position in the _kthread struct.  We access t_intr which is
       16 bytes earlier in the struct from semeventwait-r0drv-solaris.h, so
       maybe we're lucky.  Maybe, but experience indicates that the odds
       are against us... */
    pThreadInt->tid = curthread->t_did;

    rtThreadMain(pThreadInt, RTThreadNativeSelf(), &pThreadInt->szName[0]);
    thread_exit();
}


DECLHIDDEN(int) rtThreadNativeCreate(PRTTHREADINT pThreadInt, PRTNATIVETHREAD pNativeThread)
{
    kthread_t *pThread;
    RT_ASSERT_PREEMPTIBLE();

    pThreadInt->tid = UINT64_MAX;

    pThread = thread_create(NULL,                            /* Stack, use base */
                            0,                               /* Stack size */
                            rtThreadNativeMain,              /* Thread function */
                            pThreadInt,                      /* Function data */
                            0,                               /* Data size */
                            (proc_t *)RTR0ProcHandleSelf(),  /* Process handle */
                            TS_RUN,                          /* Ready to run */
                            minclsyspri                      /* Priority */
                            );
    if (RT_LIKELY(pThread))
    {
        *pNativeThread = (RTNATIVETHREAD)pThread;
        return VINF_SUCCESS;
    }

    return VERR_OUT_OF_RESOURCES;
}