bsd/kern/pthread_support.c

220 	uint32_t kw_fakecount;		/* number of error/prepost fakes */
236 	uint32_t kw_pre_rwwc;		/* prepost count */
237 	uint32_t kw_pre_lockseq;	/* prepost target seq */
238 	uint32_t kw_pre_sseq;		/* prepost target sword, in cvar used for mutexowned  */
239 	uint32_t kw_pre_intrcount;	/*  prepost of missed wakeup due to intrs */
240 	uint32_t kw_pre_intrseq;	/*  prepost of missed wakeup limit seq */
261 #define PTH_RWL_PBIT    0x04    /* prepost (cv) pending in kernel */
284 #define PTH_RWS_CV_PBIT PTH_RWS_IBIT    /* kernel has prepost/fake structs only,no waiters */
285 #define PTH_RWS_CV_MBIT PTH_RWL_MBIT	/* to indicate prepost return */
661 					__FAILEDUSERTEST__("psynch_mutexdrop_internal: prepost more than one (1)\n");
690 					/* next seq to be granted not found, prepost */
694 						__FAILEDUSERTEST__("psynch_mutexdrop_internal: prepost more than one (2)\n");
713 				__FAILEDUSERTEST__("psynch_mutexdrop_internal: prepost more than one (3)\n");
735 			/* indicate prepost content in kernel */
840 				__FAILEDUSERTEST__("psynch_mutexwait(prepost): returning 0 lseq  in mutexwait with no EBIT \n");
849 			__FAILEDUSERTEST__("psynch_mutexwait: more than one prepost\n");
1020 	/* broadcast wakeups/prepost handling */
1129 				/* merge in with existing prepost at our same uptoseq */
1186 			/* no eligible entries - add prepost */
1311 	/* Look for the sequence for prepost (or conflicting thread */
1337 				 * consuming a prepost higher than our lock sequence is valid, but
1510  *  psynch_cvclrprepost: This system call clears pending prepost if present.
1558 				/* clear prepost */
2259 			goto prepost;
2262 	/* no prepost and all threads are in place, reset the bit */
2294 prepost:
2528 			goto prepost;
2531 	/* no prepost and all threads are in place, reset the bit */
2567 prepost:
2568 	/* update if the new seq is higher than prev prepost, or first set */
3347 	int prepost = flags & KW_UNLOCK_PREPOST;
3362 	if (prepost != 0) {
3380 		if (prepost != 0)  {
3382 				/* upgrade thread calling the prepost */
3673 					if ((prepost != 0) &&  ((flags & KW_UNLOCK_PREPOST_READLOCK) != 0)) {
3838 		/* need to handle prepost */
3882 		/* During prepost when a thread is getting cancelled, we could have two with same seq */
4024 /* find the thread at the target sequence (or a broadcast/prepost at or above) */
4070 			/* match any prepost at our same uptoseq or any broadcast above */