(shmif) finish factoring out sem_t from _cont

FossilOrigin-Name: 88108356d41b6c35cc44fc9d526dc5fe7cc0a385ac4635c64fbabe023ce553c3

CHANGELOG.md

@@ -11,6 +11,12 @@
 ## Net
  * Several fixes to binary in/out transfers
 
+## Shmif
+ * Migrating more OS specific work to platform
+ * Add timeout+liveness check for recvmsg for edge condition shutdown
+ * Allow enqueueing TARGET\_COMMAND\_EXIT to terminate one segment from another thread
+ * Factored sem handle use out of cont
+
 ## 0.7.0
 ## Core
  * Wired in rendertarget vobj export for hwenc, opt-in via target\_flags on rectgt

src/platform/posix/frameserver.c

@@ -139,6 +139,33 @@ static size_t shmpage_size(size_t w, size_t h,
 #endif
 }
 
+static void fsrv_setevqs(
+	struct arcan_shmif_page* dst, sem_handle esem,
+	arcan_evctx* inq, arcan_evctx* outq)
+{
+	arcan_evctx* tmp = inq;
+	inq = outq;
+	outq = tmp;
+
+	outq->synch.handle = esem;
+	inq->synch.handle = esem;
+
+	inq->synch.killswitch = NULL;
+	outq->synch.killswitch = NULL;
+
+	inq->local = false;
+	inq->eventbuf = dst->childevq.evqueue;
+	inq->front = &dst->childevq.front;
+	inq->back  = &dst->childevq.back;
+	inq->eventbuf_sz = PP_QUEUE_SZ;
+
+	outq->local = false;
+	outq->eventbuf = dst->parentevq.evqueue;
+	outq->front = &dst->parentevq.front;
+	outq->back  = &dst->parentevq.back;
+	outq->eventbuf_sz = PP_QUEUE_SZ;
+}
+
 struct arcan_frameserver* platform_fsrv_wrapcl(struct arcan_shmif_cont* in)
 {
 /* alloc - set the wrapped bitflag, set MONITOR FFUNC, map in eventqueues */
@@ -954,8 +981,7 @@ static bool prepare_segment(struct arcan_frameserver* ctx,
 	ctx->abuf_cnt = abufc;
 	ctx->abuf_sz = abufsz;
 	ctx->tag = tag;
-	arcan_shmif_setevqs(ctx->shm.ptr, ctx->esync,
-		&(ctx->inqueue), &(ctx->outqueue), true);
+	fsrv_setevqs(ctx->shm.ptr, ctx->esync, &(ctx->inqueue), &(ctx->outqueue));
 	ctx->inqueue.synch.killswitch = (void*) ctx;
 	ctx->outqueue.synch.killswitch = (void*) ctx;
 
@@ -1449,7 +1475,7 @@ int platform_fsrv_resynch(struct arcan_frameserver* s)
 	shmpage->segment_size = arcan_shmif_mapav(shmpage,
 		s->vbufs, s->vbuf_cnt, vbufsz, s->abufs, s->abuf_cnt, abufsz);
 	s->abuf_sz = abufsz;
-	arcan_shmif_setevqs(shmpage, s->esync, &(s->inqueue), &(s->outqueue), 1);
+	fsrv_setevqs(shmpage, s->esync, &(s->inqueue), &(s->outqueue));
 
 /* commit to shared page */
 	shmpage->resized = 0;

src/shmif/CMakeLists.txt

@@ -60,6 +60,7 @@ set (SHMIF_SOURCES
 	${ASD}/engine/arcan_trace.c
 	${ASD}/shmif/platform/exec.c
 	${ASD}/shmif/platform/fdpassing.c
+	${ASD}/shmif/platform/eventqueue.c
 )
 
 if (LWA_PLATFORM_STR AND IS_DIRECTORY "${ASD}/shmif/${LWA_PLATFORM_STR}" AND