thread-r0drv-os2.cpp revision 941179b70e2f83fd1a1a398d571450e3e0de905b
/* $Id$ */
/** @file
* IPRT - Threads (Part 1), Ring-0 Driver, OS/2.
*/
/*
* Copyright (c) 2007 knut st. osmundsen <bird-src-spam@anduin.net>
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
#include "the-os2-kernel.h"
/*******************************************************************************
* Global Variables *
*******************************************************************************/
/** Per-cpu preemption counters. */
{
}
{
switch (rc)
{
case NO_ERROR:
return VINF_SUCCESS;
case ERROR_TIMEOUT:
return VERR_TIMEOUT;
case ERROR_INTERRUPT:
return VERR_INTERRUPTED;
default:
return VERR_NO_TRANSLATION;
}
}
RTDECL(bool) RTThreadYield(void)
{
/** @todo implement me (requires a devhelp) */
return false;
}
{
return c == 0
&& ASMIntAreEnabled();
}
{
union
{
} u;
AssertReturn(rc == 0, false);
if (u.fResched)
return true;
/** @todo Check if DHGETDOSV_YIELDFLAG includes TCYIELDFLAG. */
AssertReturn(rc == 0, false);
if (u.fResched)
return true;
return false;
}
RTDECL(bool) RTThreadPreemptIsPendingTrusty(void)
{
/* yes, RTThreadPreemptIsPending is reliable. */
return true;
}
RTDECL(bool) RTThreadPreemptIsPossible(void)
{
/* no kernel preemption on OS/2. */
return false;
}
{
/* No preemption on OS/2, so do our own accounting. */
pState->u32Reserved = c;
}
{
/* No preemption on OS/2, so do our own accounting. */
AssertMsg(pState->u32Reserved == (uint32_t)*pc, ("uchDummy=%d *pc=%d \n", pState->u32Reserved, *pc));
pState->u32Reserved = 0;
}
{
union
{
} u;
/** @todo OS/2: verify the usage of DHGETDOSV_INTERRUPTLEV. */
AssertReturn(rc == 0, true);
return u.cInterruptLevel > 0;
}