| 1 | /* $Id: thread-r0drv-os2.cpp 19920 2009-05-22 17:14:11Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Threads (Part 1), Ring-0 Driver, OS/2.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (c) 2007 knut st. osmundsen <[email protected]>
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| 8 | *
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| 9 | * Permission is hereby granted, free of charge, to any person
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| 10 | * obtaining a copy of this software and associated documentation
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| 11 | * files (the "Software"), to deal in the Software without
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| 12 | * restriction, including without limitation the rights to use,
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| 13 | * copy, modify, merge, publish, distribute, sublicense, and/or sell
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| 14 | * copies of the Software, and to permit persons to whom the
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| 15 | * Software is furnished to do so, subject to the following
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| 16 | * conditions:
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| 17 | *
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| 18 | * The above copyright notice and this permission notice shall be
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| 19 | * included in all copies or substantial portions of the Software.
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| 20 | *
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| 21 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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| 22 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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| 23 | * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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| 24 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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| 25 | * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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| 26 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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| 27 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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| 28 | * OTHER DEALINGS IN THE SOFTWARE.
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| 29 | */
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| 30 |
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| 31 | /*******************************************************************************
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| 32 | * Header Files *
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| 33 | *******************************************************************************/
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| 34 | #include "the-os2-kernel.h"
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| 35 |
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| 36 | #include <iprt/thread.h>
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| 37 | #include <iprt/err.h>
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| 38 | #include <iprt/assert.h>
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| 39 | #include "internal/thread.h"
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| 40 |
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| 41 |
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| 42 | RTDECL(RTNATIVETHREAD) RTThreadNativeSelf(void)
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| 43 | {
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| 44 | PLINFOSEG pLIS = (PLINFOSEG)RTR0Os2Virt2Flat(g_fpLIS);
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| 45 | AssertReturn(pLIS, NIL_RTNATIVETHREAD);
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| 46 | return pLIS->tidCurrent | (pLIS->pidCurrent << 16);
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| 47 | }
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| 48 |
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| 49 |
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| 50 | RTDECL(int) RTThreadSleep(unsigned cMillies)
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| 51 | {
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| 52 | int rc = KernBlock((ULONG)RTThreadSleep,
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| 53 | cMillies == RT_INDEFINITE_WAIT ? SEM_INDEFINITE_WAIT : cMillies,
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| 54 | 0, NULL, NULL);
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| 55 | switch (rc)
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| 56 | {
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| 57 | case NO_ERROR:
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| 58 | return VINF_SUCCESS;
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| 59 | case ERROR_TIMEOUT:
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| 60 | return VERR_TIMEOUT;
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| 61 | case ERROR_INTERRUPT:
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| 62 | return VERR_INTERRUPTED;
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| 63 | default:
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| 64 | AssertMsgFailed(("%d\n", rc));
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| 65 | return VERR_NO_TRANSLATION;
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| 66 | }
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| 67 | }
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| 68 |
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| 69 |
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| 70 | RTDECL(bool) RTThreadYield(void)
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| 71 | {
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| 72 | /** @todo implement me (requires a devhelp) */
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| 73 | return false;
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| 74 | }
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| 75 |
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| 76 |
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| 77 | RTDECL(bool) RTThreadPreemptIsEnabled(RTTHREAD hThread)
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| 78 | {
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| 79 | Assert(hThread == NIL_RTTHREAD);
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| 80 | return false;
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| 81 | }
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| 82 |
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| 83 |
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| 84 | RTDECL(bool) RTThreadPreemptIsPending(RTTHREAD hThread)
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| 85 | {
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| 86 | Assert(hThread == NIL_RTTHREAD);
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| 87 |
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| 88 | union
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| 89 | {
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| 90 | RTFAR16 fp;
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| 91 | uint8_t fResched;
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| 92 | } u;
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| 93 | int rc = RTR0Os2DHQueryDOSVar(DHGETDOSV_YIELDFLAG, 0, &u.fp);
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| 94 | AssertReturn(rc == 0, false);
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| 95 | if (u.fResched)
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| 96 | return true;
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| 97 |
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| 98 | /** @todo Check if DHGETDOSV_YIELDFLAG includes TCYIELDFLAG. */
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| 99 | rc = RTR0Os2DHQueryDOSVar(DHGETDOSV_TCYIELDFLAG, 0, &u.fp);
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| 100 | AssertReturn(rc == 0, false);
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| 101 | if (u.fResched)
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| 102 | return true;
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| 103 | return false;
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| 104 | }
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| 105 |
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| 106 |
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| 107 | RTDECL(void) RTThreadPreemptDisable(PRTTHREADPREEMPTSTATE pState)
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| 108 | {
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| 109 | AssertPtr(pState);
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| 110 | Assert(pState->uchDummy != 42);
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| 111 | pState->uchDummy = 42;
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| 112 | /* Nothing to do here as OS/2 doesn't preempt kernel threads. */
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| 113 | }
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| 114 |
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| 115 |
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| 116 | RTDECL(void) RTThreadPreemptRestore(PRTTHREADPREEMPTSTATE pState)
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| 117 | {
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| 118 | AssertPtr(pState);
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| 119 | Assert(pState->uchDummy == 42);
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| 120 | pState->uchDummy = 0;
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| 121 | }
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| 122 |
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