X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=ioengines.c;h=984c01ac7e6442a99868ee03388a684c654318e8;hp=cf8c2f148ca8df611c2817e854cf43ace609f56a;hb=3bec7ae05cbec8823943a9aca79871c99709ed5f;hpb=7101d9c24abec4be58a086d85d6d92ec6e6492e9

diff --git a/ioengines.c b/ioengines.c
index cf8c2f14..984c01ac 100644
--- a/ioengines.c
+++ b/ioengines.c
@@ -23,7 +23,8 @@ static LIST_HEAD(engine_list);
 static int check_engine_ops(struct ioengine_ops *ops)
 {
 	if (ops->version != FIO_IOOPS_VERSION) {
-		log_err("bad ioops version %d (want %d)\n", ops->version, FIO_IOOPS_VERSION);
+		log_err("bad ioops version %d (want %d)\n", ops->version,
+							FIO_IOOPS_VERSION);
 		return 1;
 	}
 
@@ -37,7 +38,7 @@ static int check_engine_ops(struct ioengine_ops *ops)
 	 */
 	if (ops->flags & FIO_SYNCIO)
 		return 0;
-	
+
 	if (!ops->event) {
 		log_err("%s: no event handler\n", ops->name);
 		return 1;
@@ -50,18 +51,20 @@ static int check_engine_ops(struct ioengine_ops *ops)
 		log_err("%s: no queue handler\n", ops->name);
 		return 1;
 	}
-		
+
 	return 0;
 }
 
 void unregister_ioengine(struct ioengine_ops *ops)
 {
+	dprint(FD_IO, "ioengine %s unregistered\n", ops->name);
 	list_del(&ops->list);
 	INIT_LIST_HEAD(&ops->list);
 }
 
 void register_ioengine(struct ioengine_ops *ops)
 {
+	dprint(FD_IO, "ioengine %s registered\n", ops->name);
 	INIT_LIST_HEAD(&ops->list);
 	list_add_tail(&ops->list, &engine_list);
 }
@@ -86,6 +89,8 @@ static struct ioengine_ops *dlopen_ioengine(struct thread_data *td,
 	struct ioengine_ops *ops;
 	void *dlhandle;
 
+	dprint(FD_IO, "dload engine %s\n", engine_lib);
+
 	dlerror();
 	dlhandle = dlopen(engine_lib, RTLD_LAZY);
 	if (!dlhandle) {
@@ -113,6 +118,8 @@ struct ioengine_ops *load_ioengine(struct thread_data *td, const char *name)
 	struct ioengine_ops *ops, *ret;
 	char engine[16];
 
+	dprint(FD_IO, "load ioengine %s\n", name);
+
 	strncpy(engine, name, sizeof(engine) - 1);
 
 	/*
@@ -145,6 +152,8 @@ struct ioengine_ops *load_ioengine(struct thread_data *td, const char *name)
 
 void close_ioengine(struct thread_data *td)
 {
+	dprint(FD_IO, "close ioengine %s\n", td->io_ops->name);
+
 	if (td->io_ops->cleanup)
 		td->io_ops->cleanup(td);
 
@@ -157,33 +166,47 @@ void close_ioengine(struct thread_data *td)
 
 int td_io_prep(struct thread_data *td, struct io_u *io_u)
 {
+	dprint_io_u(io_u, "prep");
 	fio_ro_check(td, io_u);
 
-	if (td->io_ops->prep)
-		return td->io_ops->prep(td, io_u);
+	lock_file(td, io_u->file, io_u->ddir);
+
+	if (td->io_ops->prep) {
+		int ret = td->io_ops->prep(td, io_u);
+
+		dprint(FD_IO, "->prep(%p)=%d\n", io_u, ret);
+		if (ret)
+			unlock_file(td, io_u->file);
+		return ret;
+	}
 
 	return 0;
 }
 
-int td_io_getevents(struct thread_data *td, int min, int max,
+int td_io_getevents(struct thread_data *td, unsigned int min, unsigned int max,
 		    struct timespec *t)
 {
-	if (min > 0 && td->io_ops->commit) {
-		int r = td->io_ops->commit(td);
+	int r = 0;
 
+	if (min > 0 && td->io_ops->commit) {
+		r = td->io_ops->commit(td);
 		if (r < 0)
-			return r;
+			goto out;
 	}
-	if (td->io_ops->getevents)
-		return td->io_ops->getevents(td, min, max, t);
 
-	return 0;
+	r = 0;
+	if (td->io_ops->getevents)
+		r = td->io_ops->getevents(td, min, max, t);
+out:
+	dprint(FD_IO, "getevents: %d\n", r);
+	return r;
 }
 
 int td_io_queue(struct thread_data *td, struct io_u *io_u)
 {
 	int ret;
 
+	dprint_io_u(io_u, "queue");
 	fio_ro_check(td, io_u);
 
 	assert((io_u->flags & IO_U_F_FLIGHT) == 0);
@@ -196,22 +219,27 @@ int td_io_queue(struct thread_data *td, struct io_u *io_u)
 
 	if (td->io_ops->flags & FIO_SYNCIO) {
 		fio_gettime(&io_u->issue_time, NULL);
-		memcpy(&td->last_issue, &io_u->issue_time, sizeof(struct timeval));
+		memcpy(&td->last_issue, &io_u->issue_time,
+					sizeof(struct timeval));
 
 		/*
 		 * for a sync engine, set the timeout upfront
 		 */
-		if (mtime_since(&td->timeout_end, &io_u->issue_time) < IO_U_TIMEOUT)
+		if (mtime_since(&td->timeout_end, &io_u->issue_time)
+		    < IO_U_TIMEOUT)
 			io_u_set_timeout(td);
 	}
 
 	if (io_u->ddir != DDIR_SYNC)
 		td->io_issues[io_u->ddir]++;
 
-	io_u_mark_depth(td, io_u);
-
 	ret = td->io_ops->queue(td, io_u);
 
+	unlock_file(td, io_u->file);
+
+	if (ret != FIO_Q_BUSY)
+		io_u_mark_depth(td, io_u, 1);
+
 	if (ret == FIO_Q_QUEUED) {
 		int r;
 
@@ -225,14 +253,17 @@ int td_io_queue(struct thread_data *td, struct io_u *io_u)
 
 	if ((td->io_ops->flags & FIO_SYNCIO) == 0) {
 		fio_gettime(&io_u->issue_time, NULL);
-		memcpy(&td->last_issue, &io_u->issue_time, sizeof(struct timeval));
+		memcpy(&td->last_issue, &io_u->issue_time,
+				sizeof(struct timeval));
 
 		/*
 		 * async engine, set the timeout here
 		 */
 		if (ret == FIO_Q_QUEUED &&
-		    mtime_since(&td->timeout_end, &io_u->issue_time) < IO_U_TIMEOUT)
+		    (mtime_since(&td->timeout_end, &io_u->issue_time)
+			< IO_U_TIMEOUT)) {
 			io_u_set_timeout(td);
+		}
 	}
 
 	return ret;
@@ -244,8 +275,10 @@ int td_io_init(struct thread_data *td)
 
 	if (td->io_ops->init) {
 		ret = td->io_ops->init(td);
-		if (ret && td->o.iodepth > 1)
-			log_err("fio: io engine init failed. Perhaps try reducing io dpeth?\n");
+		if (ret && td->o.iodepth > 1) {
+			log_err("fio: io engine init failed. Perhaps try"
+				" reducing io depth?\n");
+		}
 	}
 
 	return ret;
@@ -253,6 +286,8 @@ int td_io_init(struct thread_data *td)
 
 int td_io_commit(struct thread_data *td)
 {
+	dprint(FD_IO, "calling ->commit(), depth %d\n", td->cur_depth);
+
 	if (!td->cur_depth)
 		return 0;
 
@@ -268,8 +303,11 @@ int td_io_open_file(struct thread_data *td, struct fio_file *f)
 	if (td->io_ops->open_file(td, f)) {
 		if (td->error == EINVAL && td->o.odirect)
 			log_err("fio: destination does not support O_DIRECT\n");
-		if (td->error == EMFILE)
-			log_err("fio: try reducing/setting openfiles (failed at %u of %u)\n", td->nr_open_files, td->o.nr_files);
+		if (td->error == EMFILE) {
+			log_err("fio: try reducing/setting openfiles (failed"
+				" at %u of %u)\n", td->nr_open_files,
+							td->o.nr_files);
+		}
 
 		return 1;
 	}
@@ -282,7 +320,6 @@ int td_io_open_file(struct thread_data *td, struct fio_file *f)
 	}
 
 	f->last_free_lookup = 0;
-	f->last_completed_pos = 0;
 	f->last_pos = f->file_offset;
 	f->flags |= FIO_FILE_OPEN;
 	f->flags &= ~FIO_FILE_CLOSING;
@@ -295,7 +332,6 @@ int td_io_open_file(struct thread_data *td, struct fio_file *f)
 
 	if (td->o.fadvise_hint &&
 	    (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_FILE)) {
-		
 		int flags;
 
 		if (td_random(td))
@@ -323,7 +359,7 @@ err:
 	return 1;
 }
 
-void td_io_close_file(struct thread_data *td, struct fio_file *f)
+int td_io_close_file(struct thread_data *td, struct fio_file *f)
 {
 	if (!(f->flags & FIO_FILE_CLOSING))
 		log_file(td, f, FIO_LOG_CLOSE_FILE);
@@ -333,5 +369,7 @@ void td_io_close_file(struct thread_data *td, struct fio_file *f)
 	 */
 	f->flags |= FIO_FILE_CLOSING;
 
-	put_file(td, f);
+	unlock_file_all(td, f);
+
+	return put_file(td, f);
 }