add the missing srq enable, disable checks in gpib for now

3 files changed, 76 insertions, 10 deletions

diff --git a/libvxi11client/client.c b/libvxi11client/client.c
index 04753a8..804ef91 100644
--- a/libvxi11client/client.c
+++ b/libvxi11client/client.c
@@ -14,6 +14,8 @@ static char* geterrorstring(int errorcode) {
 			return "channel not established";
 		case -8:
 			return "operation not supported";
+		case -9:
+			return "out of resources";
 		case -11:
 			return "device locked by another link";
 		case -12:
@@ -133,7 +135,21 @@ int main(int argc, char *argv[]) {
 		// create interrupt channel
 		if ((err = vxi11_create_intr_chan()) > 0) {
 			printf("Created interrupt channel\n");
+
+			// enable interrupts
+			if ((err = vxi11_enable_srq(true, "handle")) > 0)
+				printf("Enabled interrupts\n");
+			else
+				printf("Error enabling interrupts; %s\n", geterrorstring(err));
+
 			sleep(10);
+
+			// disable interrupts
+			if ((err = vxi11_enable_srq(false, NULL)) > 0)
+				printf("Disabled interrupts\n");
+			else
+				printf("Error disabling interrupts; %s\n", geterrorstring(err));
+
 			// destroy interrupt channel
 			if ((err = vxi11_destroy_intr_chan()) > 0)
 				printf("Destroyed interrupt channel\n");
diff --git a/libvxi11client/libvxi11client.c b/libvxi11client/libvxi11client.c
index 2f36147..b212487 100644
--- a/libvxi11client/libvxi11client.c
+++ b/libvxi11client/libvxi11client.c
@@ -30,6 +30,9 @@ static GThread* interruptthread;
 static bool interruptchannelopen = false;
 
 static void killinterruptthreadandwait() {
+#ifdef DEBUG
+	printf("Waiting for interrupt thread to die\n");
+#endif
 	interruptchannelopen = false;
 	g_thread_join(interruptthread);
 	interruptthread = NULL;
@@ -361,27 +364,46 @@ static gpointer interruptthreadfunc(gpointer data) {
 	}
 	*((unsigned int*) data) = transp->xp_port;
 
-	int no_of_fds;
 	int i;
-	struct pollfd pollfd_set[1024];
+	struct pollfd *my_pollfd = NULL;
+	int last_max_pollfd = 0;
 
-	//svc_run();
-	// stolen from: http://pic.dhe.ibm.com/infocenter/aix/v6r1/index.jsp?topic=%2Fcom.ibm.aix.commtechref%2Fdoc%2Fcommtrf1%2Fsvc_getreq_poll.htm
 	while (interruptchannelopen) {
-		/* initialize the pollfd_set array and
-		 get no of file descriptors in "no_of_fds"*/
+		int max_pollfd = svc_max_pollfd;
+		if (max_pollfd == 0 && svc_pollfd == NULL)
+			break;
+
+		if (last_max_pollfd != max_pollfd) {
+			struct pollfd *new_pollfd = realloc(my_pollfd, sizeof(struct pollfd) * max_pollfd);
+
+			if (new_pollfd == NULL) {
+				break;
+			}
+
+			my_pollfd = new_pollfd;
+			last_max_pollfd = max_pollfd;
+		}
 
-		/* Keep polling on file descriptors */
-		switch (i = poll(pollfd_set, no_of_fds, -1)) {
+		for (i = 0; i < max_pollfd; ++i) {
+			my_pollfd[i].fd = svc_pollfd[i].fd;
+			my_pollfd[i].events = svc_pollfd[i].events;
+			my_pollfd[i].revents = 0;
+		}
+
+		switch (i = poll(my_pollfd, max_pollfd, VXI11_DEFAULT_TIMEOUT)) {
 			case -1:
+				break;
 			case 0:
 				continue;
 			default:
-				/* Handle RPC request on each file descriptor */
-				svc_getreq_poll(pollfd_set, i);
+				svc_getreq_poll(my_pollfd, i);
+				continue;
 		}
+		break;
 	}
 
+	free(my_pollfd);
+
 #ifdef DEBUG
 	printf("Interrupt channel thread ended\n");
 #endif
@@ -449,6 +471,33 @@ int vxi11_destroy_intr_chan() {
 }
 
 /**
+ * enable interrupts
+ */
+
+int vxi11_enable_srq(bool enable, char* handle) {
+	if (!interruptchannelopen)
+		return 0;
+	else if (clnt == NULL)
+		return 0;
+	else if (interruptthread == NULL)
+		return 0;
+
+	Device_EnableSrqParms params = { .lid = link, .enable = enable };
+	if (handle != NULL) {
+		params.handle.handle_val = handle;
+		params.handle.handle_len = strlen(handle);
+	}
+	Device_Error* error = device_enable_srq_1(&params, clnt);
+	if (error != NULL && error->error == 0) {
+		return 1;
+	}
+	else if (error == NULL)
+		return 0;
+	else
+		return -(error->error);
+}
+
+/**
  * send an abort to the connected device
  */
 
diff --git a/libvxi11client/libvxi11client.h b/libvxi11client/libvxi11client.h
index c9779e4..bf247a5 100644
--- a/libvxi11client/libvxi11client.h
+++ b/libvxi11client/libvxi11client.h
@@ -28,5 +28,6 @@ int vxi11_remote(bool waitforlock);
 int vxi11_readstatusbyte(bool waitforlock);
 int vxi11_create_intr_chan(void);
 int vxi11_destroy_intr_chan(void);
+int vxi11_enable_srq(bool enable, char* handle);
 int vxi11_docmd(unsigned long cmd, bool waitforlock);
 int vxi11_close(void);