| 1 | /* $Id: kHlpBareThread.c 24 2009-02-08 13:58:54Z bird $ */
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| 2 | /** @file
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| 3 | * kHlpBare - Thread Manipulation.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (c) 2006-2007 knut st. osmundsen <[email protected]>
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| 8 | *
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| 9 | * This file is part of kStuff.
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| 10 | *
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| 11 | * kStuff is free software; you can redistribute it and/or
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| 12 | * modify it under the terms of the GNU Lesser General Public
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| 13 | * License as published by the Free Software Foundation; either
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| 14 | * version 2.1 of the License, or (at your option) any later version.
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| 15 | *
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| 16 | * In addition to the permissions in the GNU Lesser General Public
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| 17 | * License, you are granted unlimited permission to link the compiled
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| 18 | * version of this file into combinations with other programs, and to
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| 19 | * distribute those combinations without any restriction coming from
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| 20 | * the use of this file.
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| 21 | *
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| 22 | * kStuff is distributed in the hope that it will be useful,
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| 23 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 24 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 25 | * Lesser General Public License for more details.
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| 26 | *
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| 27 | * You should have received a copy of the GNU Lesser General Public
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| 28 | * License along with kStuff; if not, write to the Free Software
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| 29 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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| 30 | * 02110-1301, USA
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| 31 | */
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| 32 |
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| 33 | /*******************************************************************************
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| 34 | * Header Files *
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| 35 | *******************************************************************************/
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| 36 | #include <k/kHlpThread.h>
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| 37 |
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| 38 | #if K_OS == K_OS_DARWIN
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| 39 | # include <mach/mach_time.h>
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| 40 |
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| 41 | #elif K_OS == K_OS_LINUX
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| 42 | # include <k/kHlpSys.h>
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| 43 |
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| 44 | #elif K_OS == K_OS_OS2
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| 45 | # define INCL_BASE
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| 46 | # define INCL_ERRORS
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| 47 | # include <os2.h>
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| 48 | #elif K_OS == K_OS_WINDOWS
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| 49 | # include <Windows.h>
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| 50 | #else
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| 51 | # error "port me"
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| 52 | #endif
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| 53 |
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| 54 |
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| 55 | /**
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| 56 | * Sleep for a number of milliseconds.
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| 57 | * @param cMillies Number of milliseconds to sleep.
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| 58 | */
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| 59 | void kHlpSleep(unsigned cMillies)
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| 60 | {
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| 61 | #if K_OS == K_OS_DARWIN
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| 62 | static struct mach_timebase_info s_Info;
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| 63 | static KBOOL s_fNanoseconds = K_UNKNOWN;
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| 64 | KU64 uNow = mach_absolute_time();
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| 65 | KU64 uDeadline;
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| 66 | KU64 uPeriod;
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| 67 |
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| 68 | if (s_fNanoseconds == K_UNKNOWN)
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| 69 | {
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| 70 | if (mach_timebase_info(&s_Info))
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| 71 | s_fNanoseconds = K_TRUE; /* the easy way out */
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| 72 | else if (s_Info.denom == s_Info.numer)
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| 73 | s_fNanoseconds = K_TRUE;
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| 74 | else
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| 75 | s_fNanoseconds = K_FALSE;
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| 76 | }
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| 77 |
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| 78 | uPeriod = (KU64)cMillies * 1000 * 1000;
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| 79 | if (!s_fNanoseconds)
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| 80 | uPeriod = (double)uPeriod * s_Info.denom / s_Info.numer; /* Use double to avoid 32-bit trouble. */
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| 81 | uDeadline = uNow + uPeriod;
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| 82 | mach_wait_until(uDeadline);
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| 83 |
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| 84 | #elif K_OS == K_OS_LINUX
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| 85 | /** @todo find the right syscall... */
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| 86 |
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| 87 | #elif K_OS == K_OS_OS2
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| 88 | DosSleep(cMillies);
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| 89 | #elif K_OS == K_OS_WINDOWS
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| 90 | Sleep(cMillies);
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| 91 | #else
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| 92 | usleep(cMillies * 1000);
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| 93 | #endif
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| 94 | }
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| 95 |
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