| 1 | /* $Id: kHlpBareThread.c 29 2009-07-01 20:30:29Z 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 <bird-kStuff-spamix@anduin.net>
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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 <k/kHlpThread.h>
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| 35 |
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| 36 | #if K_OS == K_OS_DARWIN
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| 37 | # include <mach/mach_time.h>
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| 38 |
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| 39 | #elif K_OS == K_OS_LINUX
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| 40 | # include <k/kHlpSys.h>
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| 41 |
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| 42 | #elif K_OS == K_OS_OS2
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| 43 | # define INCL_BASE
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| 44 | # define INCL_ERRORS
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| 45 | # include <os2.h>
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| 46 | #elif K_OS == K_OS_WINDOWS
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| 47 | # include <Windows.h>
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| 48 | #else
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| 49 | # error "port me"
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| 50 | #endif
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| 51 |
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| 52 |
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| 53 | /**
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| 54 | * Sleep for a number of milliseconds.
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| 55 | * @param cMillies Number of milliseconds to sleep.
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| 56 | */
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| 57 | void kHlpSleep(unsigned cMillies)
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| 58 | {
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| 59 | #if K_OS == K_OS_DARWIN
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| 60 | static struct mach_timebase_info s_Info;
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| 61 | static KBOOL s_fNanoseconds = K_UNKNOWN;
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| 62 | KU64 uNow = mach_absolute_time();
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| 63 | KU64 uDeadline;
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| 64 | KU64 uPeriod;
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| 65 |
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| 66 | if (s_fNanoseconds == K_UNKNOWN)
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| 67 | {
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| 68 | if (mach_timebase_info(&s_Info))
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| 69 | s_fNanoseconds = K_TRUE; /* the easy way out */
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| 70 | else if (s_Info.denom == s_Info.numer)
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| 71 | s_fNanoseconds = K_TRUE;
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| 72 | else
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| 73 | s_fNanoseconds = K_FALSE;
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| 74 | }
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| 75 |
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| 76 | uPeriod = (KU64)cMillies * 1000 * 1000;
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| 77 | if (!s_fNanoseconds)
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| 78 | uPeriod = (double)uPeriod * s_Info.denom / s_Info.numer; /* Use double to avoid 32-bit trouble. */
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| 79 | uDeadline = uNow + uPeriod;
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| 80 | mach_wait_until(uDeadline);
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| 81 |
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| 82 | #elif K_OS == K_OS_LINUX
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| 83 | /** @todo find the right syscall... */
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| 84 |
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| 85 | #elif K_OS == K_OS_OS2
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| 86 | DosSleep(cMillies);
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| 87 | #elif K_OS == K_OS_WINDOWS
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| 88 | Sleep(cMillies);
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| 89 | #else
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| 90 | usleep(cMillies * 1000);
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| 91 | #endif
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| 92 | }
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| 93 |
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