[stgt] [PATCH 08/12] Use bs_finish in thread per target

[Chandra Seetharaman]

Use bs_finish data structure in iSCSI thread per target context.

Signed-off-by: FUJITA Tomonori <fujita.tomonori at lab.ntt.co.jp>
Signed-off-by: Chandra Seetharaman <sekharan at us.ibm.com>

---
 usr/bs.c           |    1 +
 usr/iscsi/iscsid.h |    2 ++
 usr/iscsi/target.c |   17 ++++++++++++++++-
 3 files changed, 19 insertions(+), 1 deletion(-)

Index: tgt-1.0.8.4/usr/bs.c
===================================================================
--- tgt-1.0.8.4.orig/usr/bs.c
+++ tgt-1.0.8.4/usr/bs.c
@@ -34,6 +34,7 @@
 
 #include "list.h"
 #include "tgtd.h"
+#include "target.h"
 #include "tgtadm_error.h"
 #include "util.h"
 #include "target.h"
Index: tgt-1.0.8.4/usr/iscsi/iscsid.h
===================================================================
--- tgt-1.0.8.4.orig/usr/iscsi/iscsid.h
+++ tgt-1.0.8.4/usr/iscsi/iscsid.h
@@ -258,6 +258,8 @@ struct iscsi_target {
 
 	pthread_t thread;
 	int stop_pthread;
+
+	struct bs_finish bsfin;
 };
 
 enum task_flags {
Index: tgt-1.0.8.4/usr/iscsi/target.c
===================================================================
--- tgt-1.0.8.4.orig/usr/iscsi/target.c
+++ tgt-1.0.8.4/usr/iscsi/target.c
@@ -312,6 +312,7 @@ void iscsi_target_destroy(int tid)
 		pthread_kill(target->thread, SIGUSR2);
 
 		pthread_join(target->thread, NULL);
+		pthread_mutex_destroy(&target->bsfin.finished_lock);
 	}
 
 	close(target->efd);
@@ -333,6 +334,18 @@ static void *iscsi_thread_fn(void *arg)
 	sigaddset(&mask, SIGUSR2);
 	pthread_sigmask(SIG_BLOCK, &mask, NULL);
 
+	pthread_mutex_init(&t->bsfin.finished_lock, NULL);
+	INIT_LIST_HEAD(&t->bsfin.finished_list);
+
+	t->bsfin.th_id = syscall(SYS_gettid);
+	pthread_mutex_lock(&t->event_lock);
+
+	eprintf("Th_id: %d\n", t->bsfin.th_id);
+
+	do_tgt_event_add(t->efd, &t->events_list, sig_fd, EPOLLIN,
+			bs_sig_request_done, &t->bsfin);
+
+	pthread_mutex_unlock(&t->event_lock);
 retry:
 	nevent = epoll_wait(t->efd, events, ARRAY_SIZE(events), 1000);
 	if (nevent < 0) {
@@ -412,9 +425,11 @@ int iscsi_target_create(struct target *t
 		ret = pthread_create(&target->thread,
 					NULL, iscsi_thread_fn, target);
 
-		if (!ret)
+		if (!ret) {
+			t->bsf = &target->bsfin;
 			eprintf("created thread %u for target %s\n",
 				(unsigned)target->thread, tgt_targetname(tid));
+		}
 	}
 
 	return 0;
--
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