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lightning-sunbird  0.9+nobinonly
os2sem.c
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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00010  * Software distributed under the License is distributed on an "AS IS" basis,
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00014  *
00015  * The Original Code is the Netscape Portable Runtime (NSPR).
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00017  * The Initial Developer of the Original Code is
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00024  * Alternatively, the contents of this file may be used under the terms of
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00037 
00038 /*
00039  * OS/2-specific semaphore handling code.
00040  *
00041  */
00042 
00043 #include "primpl.h"
00044 
00045 
00046 void
00047 _PR_MD_NEW_SEM(_MDSemaphore *md, PRUintn value)
00048 {
00049    int rv;
00050 
00051     /* Our Sems don't support a value > 1 */
00052     PR_ASSERT(value <= 1);
00053 
00054     rv = DosCreateEventSem(NULL, &md->sem, 0, 0);
00055     PR_ASSERT(rv == NO_ERROR);
00056 }
00057 
00058 void
00059 _PR_MD_DESTROY_SEM(_MDSemaphore *md)
00060 {
00061    int rv;
00062    rv = DosCloseEventSem(md->sem);
00063    PR_ASSERT(rv == NO_ERROR);
00064 
00065 }
00066 
00067 PRStatus
00068 _PR_MD_TIMED_WAIT_SEM(_MDSemaphore *md, PRIntervalTime ticks)
00069 {
00070     int rv;
00071     rv = DosWaitEventSem(md->sem, PR_IntervalToMilliseconds(ticks));
00072 
00073     if (rv == NO_ERROR)
00074         return PR_SUCCESS;
00075     else
00076         return PR_FAILURE;
00077 }
00078 
00079 PRStatus
00080 _PR_MD_WAIT_SEM(_MDSemaphore *md)
00081 {
00082     return _PR_MD_TIMED_WAIT_SEM(md, PR_INTERVAL_NO_TIMEOUT);
00083 }
00084 
00085 void
00086 _PR_MD_POST_SEM(_MDSemaphore *md)
00087 {
00088    int rv;
00089    rv = DosPostEventSem(md->sem);
00090    PR_ASSERT(rv == NO_ERROR); 
00091 }
00092 
00093