X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=ioengines.c;h=879c5f1c1f438a20a5116bec93968fc0d4e0642f;hp=a395da15a95c113fb241981eb84b1fc32c009fd0;hb=f85ac25a7d5c9d5ba4d5c73363a6a2a461a9b013;hpb=21ab9d1d05055893ee0b1bed35e55e87b88b422b diff --git a/ioengines.c b/ioengines.c index a395da15..879c5f1c 100644 --- a/ioengines.c +++ b/ioengines.c @@ -17,7 +17,6 @@ #include #include "fio.h" -#include "os.h" static LIST_HEAD(engine_list); @@ -28,12 +27,6 @@ static int check_engine_ops(struct ioengine_ops *ops) return 1; } - /* - * cpu thread doesn't need to provide anything - */ - if (ops->flags & FIO_CPUIO) - return 0; - if (!ops->queue) { log_err("%s: no queue handler\n", ops->name); return 1; @@ -63,12 +56,14 @@ static int check_engine_ops(struct ioengine_ops *ops) 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); } @@ -93,6 +88,8 @@ 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) { @@ -120,6 +117,8 @@ 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); /* @@ -152,54 +151,70 @@ 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); if (td->io_ops->dlhandle) dlclose(td->io_ops->dlhandle); -#if 0 - /* we can't do this for threads, so just leak it, it's exiting */ free(td->io_ops); -#endif td->io_ops = NULL; } int td_io_prep(struct thread_data *td, struct io_u *io_u) { - if (td->io_ops->prep) - return td->io_ops->prep(td, io_u); + dprint_io_u(io_u, "prep"); + fio_ro_check(td, io_u); + + if (td->io_ops->prep) { + int ret = td->io_ops->prep(td, io_u); + + dprint(FD_IO, "->prep(%p)=%d\n", io_u, ret); + 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); io_u->flags |= IO_U_F_FLIGHT; + assert(io_u->file->flags & FIO_FILE_OPEN); + io_u->error = 0; io_u->resid = 0; 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)); /* * for a sync engine, set the timeout upfront @@ -213,11 +228,14 @@ int td_io_queue(struct thread_data *td, struct io_u *io_u) ret = td->io_ops->queue(td, io_u); + if (ret != FIO_Q_BUSY) + io_u_mark_depth(td, io_u); + if (ret == FIO_Q_QUEUED) { int r; td->io_u_queued++; - if (td->io_u_queued > td->iodepth_batch) { + if (td->io_u_queued > td->o.iodepth_batch) { r = td_io_commit(td); if (r < 0) return r; @@ -226,6 +244,7 @@ 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)); /* * async engine, set the timeout here @@ -240,14 +259,21 @@ int td_io_queue(struct thread_data *td, struct io_u *io_u) int td_io_init(struct thread_data *td) { - if (td->io_ops->init) - return td->io_ops->init(td); + int ret = 0; - return 0; + 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 depth?\n"); + } + + return ret; } 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; @@ -257,3 +283,75 @@ int td_io_commit(struct thread_data *td) return 0; } + +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); + + return 1; + } + + if (f->filetype == FIO_TYPE_PIPE) { + if (td_random(td)) { + log_err("fio: can't seek on pipes (no random io)\n"); + goto err; + } + } + + f->last_free_lookup = 0; + f->last_pos = f->file_offset; + f->flags |= FIO_FILE_OPEN; + f->flags &= ~FIO_FILE_CLOSING; + + if (td->io_ops->flags & FIO_DISKLESSIO) + goto done; + + if (td->o.invalidate_cache && file_invalidate_cache(td, f)) + goto err; + + if (td->o.fadvise_hint && + (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_FILE)) { + + int flags; + + if (td_random(td)) + flags = POSIX_FADV_RANDOM; + else + flags = POSIX_FADV_SEQUENTIAL; + + if (fadvise(f->fd, f->file_offset, f->io_size, flags) < 0) { + td_verror(td, errno, "fadvise"); + goto err; + } + } + + if (f->file_map) + memset(f->file_map, 0, f->num_maps * sizeof(long)); + +done: + log_file(td, f, FIO_LOG_OPEN_FILE); + td->nr_open_files++; + get_file(f); + return 0; +err: + if (td->io_ops->close_file) + td->io_ops->close_file(td, f); + return 1; +} + +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); + + /* + * mark as closing, do real close when last io on it has completed + */ + f->flags |= FIO_FILE_CLOSING; + + return put_file(td, f); +}