X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=engines%2Fwindowsaio.c;h=16df74035f189e15c3811755b68285795f694aaa;hb=e53cf97beb6c07ea1dedc218058675cc291e9f2a;hp=299acc47a5f3651d6c772d5d02fbef0569b4b5d3;hpb=67897036632676ce1bfdb45992df078df87c1a27;p=fio.git

diff --git a/engines/windowsaio.c b/engines/windowsaio.c
index 299acc47..16df7403 100644
--- a/engines/windowsaio.c
+++ b/engines/windowsaio.c
@@ -1,6 +1,7 @@
 /*
- * Native Windows async IO engine
- * Copyright (C) 2011 Bruce Cran <bruce@cran.org.uk>
+ * windowsaio engine
+ *
+ * IO engine using Windows IO Completion Ports.
  */
 
 #include <stdio.h>
@@ -8,27 +9,25 @@
 #include <unistd.h>
 #include <signal.h>
 #include <errno.h>
-#include <windows.h>
 
 #include "../fio.h"
 
 typedef BOOL (WINAPI *CANCELIOEX)(HANDLE hFile, LPOVERLAPPED lpOverlapped);
 
+int geterrno_from_win_error (DWORD code, int deferrno);
+
 struct fio_overlapped {
 	OVERLAPPED o;
 	struct io_u *io_u;
 	BOOL io_complete;
-    BOOL io_free;
 };
 
 struct windowsaio_data {
-	struct fio_overlapped *ovls;
 	struct io_u **aio_events;
+	HANDLE iocp;
 	HANDLE iothread;
 	HANDLE iocomplete_event;
-	CANCELIOEX pCancelIoEx;
 	BOOL iothread_running;
-	BOOL use_iocp;
 };
 
 struct thread_ctx {
@@ -36,99 +35,48 @@ struct thread_ctx {
 	struct windowsaio_data *wd;
 };
 
-static void PrintError(LPCSTR lpszFunction);
-static int fio_windowsaio_cancel(struct thread_data *td,
-			       struct io_u *io_u);
 static BOOL timeout_expired(DWORD start_count, DWORD end_count);
 static int fio_windowsaio_getevents(struct thread_data *td, unsigned int min,
-				    unsigned int max, struct timespec *t);
+					unsigned int max, struct timespec *t);
 static struct io_u *fio_windowsaio_event(struct thread_data *td, int event);
 static int fio_windowsaio_queue(struct thread_data *td,
-			      struct io_u *io_u);
+				  struct io_u *io_u);
 static void fio_windowsaio_cleanup(struct thread_data *td);
 static DWORD WINAPI IoCompletionRoutine(LPVOID lpParameter);
 static int fio_windowsaio_init(struct thread_data *td);
 static int fio_windowsaio_open_file(struct thread_data *td, struct fio_file *f);
 static int fio_windowsaio_close_file(struct thread_data fio_unused *td, struct fio_file *f);
 
-int sync_file_range(int fd, off64_t offset, off64_t nbytes,
-			   unsigned int flags)
-{
-	errno = ENOSYS;
-	return -1;
-}
-
-static void PrintError(LPCSTR lpszFunction)
-{
-	// Retrieve the system error message for the last-error code
-
-	LPSTR lpMsgBuf;
-	DWORD dw = GetLastError();
-
-	FormatMessage(
-		FORMAT_MESSAGE_ALLOCATE_BUFFER |
-		FORMAT_MESSAGE_FROM_SYSTEM |
-		FORMAT_MESSAGE_IGNORE_INSERTS,
-		NULL,
-		dw,
-		MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
-		(LPTSTR)&lpMsgBuf,
-		0, NULL );
-
-	log_err("%s - %s", lpszFunction, lpMsgBuf);
-	LocalFree(lpMsgBuf);
-}
-
 static int fio_windowsaio_init(struct thread_data *td)
 {
 	struct windowsaio_data *wd;
-	HANDLE hKernel32Dll;
 	int rc = 0;
-	int i;
 
-	wd = malloc(sizeof(struct windowsaio_data));
-	if (wd != NULL)
-		ZeroMemory(wd, sizeof(struct windowsaio_data));
-	else
+	wd = calloc(1, sizeof(struct windowsaio_data));
+	if (wd == NULL) {
+		 log_err("windowsaio: failed to allocate memory for engine data\n");
 		rc = 1;
-
-	if (!rc) {
-		wd->aio_events = malloc(td->o.iodepth * sizeof(struct io_u*));
-		if (wd->aio_events == NULL)
-			rc = 1;
 	}
 
 	if (!rc) {
-		wd->ovls = malloc(td->o.iodepth * sizeof(struct fio_overlapped));
-		if (wd->ovls == NULL)
+		wd->aio_events = malloc(td->o.iodepth * sizeof(struct io_u*));
+		if (wd->aio_events == NULL) {
+			log_err("windowsaio: failed to allocate memory for aio events list\n");
 			rc = 1;
-	}
-
-	if (!rc) {
-	    for (i = 0; i < td->o.iodepth; i++) {
-	        wd->ovls[i].io_free = TRUE;
-	        wd->ovls[i].io_complete = FALSE;
-
-			wd->ovls[i].o.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
-			if (wd->ovls[i].o.hEvent == NULL) {
-				rc = 1;
-				break;
-			}
-	    }
+		}
 	}
 
 	if (!rc) {
 		/* Create an auto-reset event */
 		wd->iocomplete_event = CreateEvent(NULL, FALSE, FALSE, NULL);
-		if (wd->iocomplete_event == NULL)
+		if (wd->iocomplete_event == NULL) {
+			log_err("windowsaio: failed to create io complete event handle\n");
 			rc = 1;
+		}
 	}
 
 	if (rc) {
-		PrintError(__func__);
 		if (wd != NULL) {
-			if (wd->ovls != NULL)
-				free(wd->ovls);
 			if (wd->aio_events != NULL)
 				free(wd->aio_events);
 
@@ -136,33 +84,63 @@ static int fio_windowsaio_init(struct thread_data *td)
 		}
 	}
 
-	hKernel32Dll = GetModuleHandle("kernel32.dll");
-	wd->pCancelIoEx = GetProcAddress(hKernel32Dll, "CancelIoEx");
-
 	td->io_ops->data = wd;
-	return 0;
+
+	if (!rc) {
+		struct thread_ctx *ctx;
+		struct windowsaio_data *wd;
+		HANDLE hFile;
+
+		hFile = CreateIoCompletionPort(INVALID_HANDLE_VALUE, NULL, 0, 0);
+		if (hFile == INVALID_HANDLE_VALUE) {
+			log_err("windowsaio: failed to create io completion port\n");
+			rc = 1;
+		}
+
+		wd = td->io_ops->data;
+		wd->iothread_running = TRUE;
+		wd->iocp = hFile;
+
+		if (!rc)
+			ctx = malloc(sizeof(struct thread_ctx));
+
+		if (!rc && ctx == NULL)
+		{
+			log_err("windowsaio: failed to allocate memory for thread context structure\n");
+			CloseHandle(hFile);
+			rc = 1;
+		}
+
+		if (!rc)
+		{
+			ctx->iocp = hFile;
+			ctx->wd = wd;
+			wd->iothread = CreateThread(NULL, 0, IoCompletionRoutine, ctx, 0, NULL);
+			if (wd->iothread == NULL)
+				log_err("windowsaio: failed to create io completion thread\n");
+		}
+
+		if (rc || wd->iothread == NULL)
+			rc = 1;
+	}
+
+	return rc;
 }
 
 static void fio_windowsaio_cleanup(struct thread_data *td)
 {
-	int i;
 	struct windowsaio_data *wd;
 
 	wd = td->io_ops->data;
 
 	if (wd != NULL) {
-	    wd->iothread_running = FALSE;
-    	WaitForSingleObject(wd->iothread, INFINITE);
+		wd->iothread_running = FALSE;
+		WaitForSingleObject(wd->iothread, INFINITE);
 
 		CloseHandle(wd->iothread);
 		CloseHandle(wd->iocomplete_event);
 
-		for (i = 0; i < td->o.iodepth; i++) {
-			CloseHandle(wd->ovls[i].o.hEvent);
-		}
-
 		free(wd->aio_events);
-		free(wd->ovls);
 		free(wd);
 
 		td->io_ops->data = NULL;
@@ -173,8 +151,7 @@ static void fio_windowsaio_cleanup(struct thread_data *td)
 static int fio_windowsaio_open_file(struct thread_data *td, struct fio_file *f)
 {
 	int rc = 0;
-	HANDLE hFile;
-	DWORD flags = FILE_FLAG_POSIX_SEMANTICS;
+	DWORD flags = FILE_FLAG_POSIX_SEMANTICS | FILE_FLAG_OVERLAPPED;
 	DWORD sharemode = FILE_SHARE_READ | FILE_SHARE_WRITE;
 	DWORD openmode = OPEN_ALWAYS;
 	DWORD access;
@@ -182,24 +159,24 @@ static int fio_windowsaio_open_file(struct thread_data *td, struct fio_file *f)
 	dprint(FD_FILE, "fd open %s\n", f->file_name);
 
 	if (f->filetype == FIO_TYPE_PIPE) {
-		log_err("fio: windowsaio doesn't support pipes\n");
+		log_err("windowsaio: pipes are not supported\n");
 		return 1;
 	}
 
 	if (!strcmp(f->file_name, "-")) {
-		log_err("fio: can't read/write to stdin/out\n");
+		log_err("windowsaio: can't read/write to stdin/out\n");
 		return 1;
 	}
 
-    if (!td->o.odirect && !td->o.sync_io && td->io_ops->data != NULL)
-	    flags |= FILE_FLAG_OVERLAPPED;
-
 	if (td->o.odirect)
 		flags |= FILE_FLAG_NO_BUFFERING;
 	if (td->o.sync_io)
 		flags |= FILE_FLAG_WRITE_THROUGH;
 
-
+	/*
+	 * Inform Windows whether we're going to be doing sequential or
+	 * random io so it can tune the Cache Manager
+	 */
 	if (td->o.td_ddir == TD_DDIR_READ  ||
 		td->o.td_ddir == TD_DDIR_WRITE)
 		flags |= FILE_FLAG_SEQUENTIAL_SCAN;
@@ -211,7 +188,7 @@ static int fio_windowsaio_open_file(struct thread_data *td, struct fio_file *f)
 	else
 		access = (GENERIC_READ | GENERIC_WRITE);
 
-	if (td->o.create_on_open > 0)
+	if (td->o.create_on_open)
 		openmode = OPEN_ALWAYS;
 	else
 		openmode = OPEN_EXISTING;
@@ -220,36 +197,19 @@ static int fio_windowsaio_open_file(struct thread_data *td, struct fio_file *f)
 		NULL, openmode, flags, NULL);
 
 	if (f->hFile == INVALID_HANDLE_VALUE) {
-		PrintError(__func__);
+		log_err("windowsaio: failed to open file \"%s\"\n", f->file_name);
 		rc = 1;
 	}
 
-	/* Only set up the competion port and thread if we're not just
+	/* Only set up the completion port and thread if we're not just
 	 * querying the device size */
-    if (!rc && td->io_ops->data != NULL && !td->o.odirect && !td->o.sync_io) {
-		struct thread_ctx *ctx;
-        struct windowsaio_data *wd;
-		hFile = CreateIoCompletionPort(f->hFile, NULL, 0, 0);
-
-        wd = td->io_ops->data;
+	if (!rc && td->io_ops->data != NULL) {
+		struct windowsaio_data *wd;
 
-        if (!td->o.odirect && !td->o.sync_io)
-            wd->use_iocp = 1;
-        else
-            wd->use_iocp = 0;
+		wd = td->io_ops->data;
 
-		wd->iothread_running = TRUE;
-
-		if (!rc) {
-			ctx = malloc(sizeof(struct thread_ctx));
-			ctx->iocp = hFile;
-			ctx->wd = wd;
-
-			wd->iothread = CreateThread(NULL, 0, IoCompletionRoutine, ctx, 0, NULL);
-		}
-
-		if (rc || wd->iothread == NULL) {
-			PrintError(__func__);
+		if (CreateIoCompletionPort(f->hFile, wd->iocp, 0, 0) == NULL) {
+			log_err("windowsaio: failed to create io completion port\n");
 			rc = 1;
 		}
 	}
@@ -259,15 +219,19 @@ static int fio_windowsaio_open_file(struct thread_data *td, struct fio_file *f)
 
 static int fio_windowsaio_close_file(struct thread_data fio_unused *td, struct fio_file *f)
 {
+	int rc = 0;
+
 	dprint(FD_FILE, "fd close %s\n", f->file_name);
 
 	if (f->hFile != INVALID_HANDLE_VALUE) {
-		if (!CloseHandle(f->hFile))
-			PrintError(__func__);
+		if (!CloseHandle(f->hFile)) {
+			log_info("windowsaio: failed to close file handle for \"%s\"\n", f->file_name);
+			rc = 1;
+		}
 	}
 
 	f->hFile = INVALID_HANDLE_VALUE;
-	return 0;
+	return rc;
 }
 
 static BOOL timeout_expired(DWORD start_count, DWORD end_count)
@@ -292,12 +256,12 @@ static struct io_u* fio_windowsaio_event(struct thread_data *td, int event)
 }
 
 static int fio_windowsaio_getevents(struct thread_data *td, unsigned int min,
-				    unsigned int max, struct timespec *t)
+					unsigned int max, struct timespec *t)
 {
 	struct windowsaio_data *wd = td->io_ops->data;
-	struct flist_head *entry;
 	unsigned int dequeued = 0;
 	struct io_u *io_u;
+	int i;
 	struct fio_overlapped *fov;
 	DWORD start_count = 0;
 	DWORD end_count = 0;
@@ -311,13 +275,15 @@ static int fio_windowsaio_getevents(struct thread_data *td, unsigned int min,
 	}
 
 	do {
-		flist_for_each(entry, &td->io_u_busylist) {
-			io_u = flist_entry(entry, struct io_u, list);
+		io_u_qiter(&td->io_u_all, io_u, i) {
+			if (!(io_u->flags & IO_U_F_FLIGHT))
+				continue;
+
 			fov = (struct fio_overlapped*)io_u->engine_data;
 
 			if (fov->io_complete) {
-                fov->io_complete = FALSE;
-				fov->io_free  = TRUE;
+				fov->io_complete = FALSE;
+				ResetEvent(fov->o.hEvent);
 				wd->aio_events[dequeued] = io_u;
 				dequeued++;
 			}
@@ -326,10 +292,10 @@ static int fio_windowsaio_getevents(struct thread_data *td, unsigned int min,
 				break;
 		}
 
-        if (dequeued < min) {
+		if (dequeued < min) {
 			status = WaitForSingleObject(wd->iocomplete_event, mswait);
-			if (status != WAIT_OBJECT_0 && dequeued > 0)
-			    break;
+			if (status != WAIT_OBJECT_0 && dequeued >= min)
+				break;
 		}
 
 		if (dequeued >= min || (t != NULL && timeout_expired(start_count, end_count)))
@@ -339,43 +305,23 @@ static int fio_windowsaio_getevents(struct thread_data *td, unsigned int min,
 	return dequeued;
 }
 
-static int fio_windowsaio_queue(struct thread_data *td,
-			      struct io_u *io_u)
+static int fio_windowsaio_queue(struct thread_data *td, struct io_u *io_u)
 {
-    LPOVERLAPPED lpOvl = NULL;
-	struct windowsaio_data *wd;
+	struct fio_overlapped *o = io_u->engine_data;
+	LPOVERLAPPED lpOvl = &o->o;
 	DWORD iobytes;
-	BOOL success;
-	int index;
+	BOOL success = FALSE;
 	int rc = FIO_Q_COMPLETED;
 
 	fio_ro_check(td, io_u);
 
-	wd = td->io_ops->data;
-
-	if (wd->use_iocp) {
-	    for (index = 0; index < td->o.iodepth; index++) {
-	        if (wd->ovls[index].io_free) {
-                wd->ovls[index].io_free = FALSE;
-	            ResetEvent(wd->ovls[index].o.hEvent);
-	            break;
-	        }
-        }
-
-        assert(index < td->o.iodepth);
-
-        lpOvl = &wd->ovls[index].o;
-	    wd->ovls[index].io_u = io_u;
-    	lpOvl->Internal = STATUS_PENDING;
-    	lpOvl->InternalHigh = 0;
-    	lpOvl->Offset = io_u->offset & 0xFFFFFFFF;
-    	lpOvl->OffsetHigh = io_u->offset >> 32;
-    	lpOvl->Pointer = NULL;
-        io_u->engine_data = &wd->ovls[index];
-	}
+	lpOvl->Internal = STATUS_PENDING;
+	lpOvl->InternalHigh = 0;
+	lpOvl->Offset = io_u->offset & 0xFFFFFFFF;
+	lpOvl->OffsetHigh = io_u->offset >> 32;
 
 	switch (io_u->ddir) {
-    case DDIR_WRITE:
+	case DDIR_WRITE:
 		success = WriteFile(io_u->file->hFile, io_u->xfer_buf, io_u->xfer_buflen, &iobytes, lpOvl);
 		break;
 	case DDIR_READ:
@@ -385,29 +331,28 @@ static int fio_windowsaio_queue(struct thread_data *td,
 	case DDIR_DATASYNC:
 	case DDIR_SYNC_FILE_RANGE:
 		success = FlushFileBuffers(io_u->file->hFile);
-		if (!success)
-		    io_u->error = GetLastError();
+		if (!success) {
+			log_err("windowsaio: failed to flush file buffers\n");
+			io_u->error = win_to_posix_error(GetLastError());
+		}
 
 		return FIO_Q_COMPLETED;
 		break;
 	case DDIR_TRIM:
-		log_err("manual TRIM isn't supported on Windows");
+		log_err("windowsaio: manual TRIM isn't supported on Windows\n");
 		io_u->error = 1;
 		io_u->resid = io_u->xfer_buflen;
 		return FIO_Q_COMPLETED;
 		break;
 	default:
 		assert(0);
+		break;
 	}
 
-    if (wd->use_iocp && (success || GetLastError() == ERROR_IO_PENDING)) {
+	if (success || GetLastError() == ERROR_IO_PENDING)
 		rc = FIO_Q_QUEUED;
-	} else if (success && !wd->use_iocp) {
-		io_u->resid = io_u->xfer_buflen - iobytes;
-		io_u->error = 0;
-	} else {
-		PrintError(__func__);
-		io_u->error = GetLastError();
+	else {
+		io_u->error = win_to_posix_error(GetLastError());
 		io_u->resid = io_u->xfer_buflen;
 	}
 
@@ -429,7 +374,7 @@ static DWORD WINAPI IoCompletionRoutine(LPVOID lpParameter)
 	wd = ctx->wd;
 
 	do {
-		if (!GetQueuedCompletionStatus(ctx->iocp, &bytes, &ulKey, &ovl, 250))
+		if (!GetQueuedCompletionStatus(ctx->iocp, &bytes, &ulKey, &ovl, 250) && ovl == NULL)
 			continue;
 
 		fov = CONTAINING_RECORD(ovl, struct fio_overlapped, o);
@@ -440,10 +385,10 @@ static DWORD WINAPI IoCompletionRoutine(LPVOID lpParameter)
 			io_u->error = 0;
 		} else {
 			io_u->resid = io_u->xfer_buflen;
-			io_u->error = ovl->Internal;
+			io_u->error = win_to_posix_error(GetLastError());
 		}
 
-        fov->io_complete = TRUE;
+		fov->io_complete = TRUE;
 		SetEvent(wd->iocomplete_event);
 	} while (ctx->wd->iothread_running);
 
@@ -452,22 +397,33 @@ static DWORD WINAPI IoCompletionRoutine(LPVOID lpParameter)
 	return 0;
 }
 
-static int fio_windowsaio_cancel(struct thread_data *td,
-			       struct io_u *io_u)
+static void fio_windowsaio_io_u_free(struct thread_data *td, struct io_u *io_u)
 {
-	int rc = 0;
+	struct fio_overlapped *o = io_u->engine_data;
 
-	struct windowsaio_data *wd = td->io_ops->data;
+	if (o) {
+		CloseHandle(o->o.hEvent);
+		io_u->engine_data = NULL;
+		free(o);
+	}
+}
 
-	/* If we're running on Vista or newer, we can cancel individual IO requests */
-	if (wd->pCancelIoEx != NULL) {
-		struct fio_overlapped *ovl = io_u->engine_data;
-		if (!wd->pCancelIoEx(io_u->file->hFile, &ovl->o))
-			rc = 1;
-	} else
-		rc = 1;
+static int fio_windowsaio_io_u_init(struct thread_data *td, struct io_u *io_u)
+{
+	struct fio_overlapped *o;
+
+	o = malloc(sizeof(*o));
+	o->io_complete = FALSE;
+	o->io_u = io_u;
+	o->o.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
+	if (o->o.hEvent == NULL) {
+		log_err("windowsaio: failed to create event handle\n");
+		free(o);
+		return 1;
+	}
 
-	return rc;
+	io_u->engine_data = o;
+	return 0;
 }
 
 static struct ioengine_ops ioengine = {
@@ -475,21 +431,22 @@ static struct ioengine_ops ioengine = {
 	.version	= FIO_IOOPS_VERSION,
 	.init		= fio_windowsaio_init,
 	.queue		= fio_windowsaio_queue,
-	.cancel		= fio_windowsaio_cancel,
 	.getevents	= fio_windowsaio_getevents,
 	.event		= fio_windowsaio_event,
 	.cleanup	= fio_windowsaio_cleanup,
 	.open_file	= fio_windowsaio_open_file,
 	.close_file	= fio_windowsaio_close_file,
-	.get_file_size	= generic_get_file_size
+	.get_file_size	= generic_get_file_size,
+	.io_u_init	= fio_windowsaio_io_u_init,
+	.io_u_free	= fio_windowsaio_io_u_free,
 };
 
-static void fio_init fio_posixaio_register(void)
+static void fio_init fio_windowsaio_register(void)
 {
 	register_ioengine(&ioengine);
 }
 
-static void fio_exit fio_posixaio_unregister(void)
+static void fio_exit fio_windowsaio_unregister(void)
 {
 	unregister_ioengine(&ioengine);
 }