*/
/*
+ * Extended application programmers interface for IO as found on Cray RedStorm
+ * and the other current SUNMos/Puma/Cougar/Catamount systems.
+ */
+
+#ifndef _XTIO_H_
+#define _XTIO_H_
+
+/*
+ * When compiled for use with libsysio, this allows one to move all the
+ * externals to a distinct namespace. When not, we want it to do nothing.
+ *
+ * NB: The choice of macro name here is dangerous. It's in the global
+ * namespace! We should fix that one of these days.
+ */
+#if !defined(SYSIO_INTERFACE_NAME)
+#define SYSIO_INTERFACE_NAME(_n) _n
+#endif
+
+#ifndef _IOID_T_DEFINED
+#define _IOID_T_DEFINED
+typedef void *ioid_t;
+
+#define IOID_FAIL 0
+#endif
+
+/*
* Structure for strided I/O.
*/
struct xtvec {
};
#endif
+#ifdef HAVE_POSIX2008_PREADV
+#define _SYSIO_PREADV_T int
+#else
+#define _SYSIO_PREADV_T size_t
+#endif
+
+struct iovec;
+
+/*
+ * Get status of previously posted async file IO operation.
+ */
+extern int SYSIO_INTERFACE_NAME(iodone)(ioid_t ioid);
+
+/*
+ * Wait for completion of a previously posted asynch file IO request.
+ */
+extern ssize_t SYSIO_INTERFACE_NAME(iowait)(ioid_t ioid);
+
+/*
+ * Post asynch read into buffers mapped by an iovec from file at given offset.
+ */
+extern ioid_t SYSIO_INTERFACE_NAME(ipreadv)(int fd,
+ const struct iovec *iov,
+ size_t count,
+ off_t offset);
+
+#ifdef _LARGEFILE64_SOURCE
+/*
+ * Post asynch read into buffers mapped by an iovec from file at given offset.
+ */
+extern ioid_t SYSIO_INTERFACE_NAME(ipread64v)(int fd,
+ const struct iovec *iov,
+ size_t count,
+ off64_t offset);
+#endif
+
+/*
+ * Post asynch read into buffer from file at given offset.
+ */
+extern ioid_t SYSIO_INTERFACE_NAME(ipread)(int fd,
+ void *buf,
+ size_t count,
+ off_t offset);
+
+#ifdef _LARGEFILE64_SOURCE
+/*
+ * Post asynch read into buffer from file at given offset.
+ */
+extern ioid_t SYSIO_INTERFACE_NAME(ipread64)(int fd,
+ void *buf,
+ size_t count,
+ off64_t offset);
+#endif
+
+/*
+ * Read into buffers mapped by an iovec from file at given offset.
+ */
+extern ssize_t SYSIO_INTERFACE_NAME(preadv)(int fd,
+ const struct iovec *iov,
+ _SYSIO_PREADV_T count,
+ off_t offset);
+
+#ifdef _LARGEFILE64_SOURCE
+/*
+ * Read into buffers mapped by an iovec from file at given offset.
+ */
+extern ssize_t SYSIO_INTERFACE_NAME(pread64v)(int fd,
+ const struct iovec *iov,
+ _SYSIO_PREADV_T count,
+ off64_t offset);
+#endif
+
+/*
+ * Post asynch read into buffers mapped by an iovec.
+ */
+extern ioid_t SYSIO_INTERFACE_NAME(ireadv)(int fd,
+ const struct iovec *iov,
+ int count);
+
+/*
+ * Read into buffer.
+ */
+extern ioid_t SYSIO_INTERFACE_NAME(iread)(int fd,
+ void *buf,
+ size_t count);
+
+/*
+ * Post async read into buffers mapped by iovec from regions mapped
+ * by xtvec.
+ *
+ * NB: An adaptation of "listio" from Argonne's PVFS.
+ */
extern ioid_t SYSIO_INTERFACE_NAME(ireadx)(int fd,
const struct iovec *iov,
size_t iov_count,
- const struct xtvec *xtv,
+ const struct xtvec *xtv,
size_t xtv_count);
+
#ifdef __USE_LARGEFILE64
+/*
+ * Post async read into buffers mapped by iovec from regions mapped
+ * by xtvec.
+ *
+ * NB: An adaptation of "listio" from Argonne's PVFS.
+ */
extern ioid_t SYSIO_INTERFACE_NAME(iread64x)(int fd,
const struct iovec *iov,
size_t iov_count,
- const struct xtvec64 *xtv,
+ const struct xtvec64 *xtv,
size_t xtv_count);
#endif
+
+/*
+ * Read into buffers mapped by iovec from regions mapped
+ * by xtvec.
+ *
+ * NB: An adaptation of "listio" from Argonne's PVFS.
+ */
extern ssize_t SYSIO_INTERFACE_NAME(readx)(int fd,
- const struct iovec *iov,
+ const struct iovec *iov,
size_t iov_count,
- const struct xtvec *xtv,
+ const struct xtvec *xtv,
size_t xtv_count);
+
#ifdef __USE_LARGEFILE64
+/*
+ * Read into buffers mapped by iovec from regions mapped
+ * by xtvec.
+ *
+ * NB: An adaptation of "listio" from Argonne's PVFS.
+ */
extern ssize_t SYSIO_INTERFACE_NAME(read64x)(int fd,
- const struct iovec *iov,
+ const struct iovec *iov,
size_t iov_count,
- const struct xtvec64 *xtv,
+ const struct xtvec64 *xtv,
size_t xtv_count);
#endif
+
+/*
+ * Post asynch write from buffers mapped by an iovec to file at given offset.
+ */
+extern ioid_t SYSIO_INTERFACE_NAME(ipwritev)(int fd,
+ const struct iovec *iov,
+ size_t count,
+ off_t offset);
+#ifdef _LARGEFILE64_SOURCE
+/*
+ * Post asynch write from buffers mapped by an iovec to file at given offset.
+ */
+extern ioid_t SYSIO_INTERFACE_NAME(ipwrite64v)(int fd,
+ const struct iovec *iov,
+ size_t count,
+ off64_t offset);
+#endif
+
+/*
+ * Post asynch write from buffer to file at given offset.
+ */
+extern ioid_t SYSIO_INTERFACE_NAME(ipwrite)(int fd,
+ const void *buf,
+ size_t count,
+ off_t offset);
+
+#ifdef _LARGEFILE64_SOURCE
+/*
+ * Post asynch write from buffer to file at given offset.
+ */
+extern ioid_t SYSIO_INTERFACE_NAME(ipwrite64)(int fd,
+ const void *buf,
+ size_t count,
+ off64_t offset);
+#endif
+
+/*
+ * Write from buffers mapped by an iovec to file at given offset.
+ */
+extern ssize_t SYSIO_INTERFACE_NAME(pwritev)(int fd,
+ const struct iovec *iov,
+ _SYSIO_PREADV_T count,
+ off_t offset);
+
+#ifdef _LARGEFILE64_SOURCE
+/*
+ * Write from buffers mapped by an iovec to file at given offset.
+ */
+extern ssize_t SYSIO_INTERFACE_NAME(pwrite64v)(int fd,
+ const struct iovec *iov,
+ _SYSIO_PREADV_T count,
+ off64_t offset);
+#endif
+
+/*
+ * Post asynch write from buffer to file at given offset.
+ */
+extern ioid_t SYSIO_INTERFACE_NAME(iwritev)(int fd,
+ const struct iovec *iov,
+ int count);
+
+/*
+ * Write from buffer to file at given offset.
+ */
+extern ioid_t SYSIO_INTERFACE_NAME(iwrite)(int fd,
+ const void *buf,
+ size_t count);
+
+/*
+ * Post async write from buffers mapped by iovec to regions mapped
+ * by xtvec.
+ *
+ * NB: An adaptation of "listio" from Argonne's PVFS.
+ */
extern ioid_t SYSIO_INTERFACE_NAME(iwritex)(int fd,
- const struct iovec *iov,
+ const struct iovec *iov,
size_t iov_count,
- const struct xtvec *xtv,
+ const struct xtvec *xtv,
size_t xtv_count);
+
#ifdef __USE_LARGEFILE64
+/*
+ * Post async write from buffers mapped by iovec to regions mapped
+ * by xtvec.
+ *
+ * NB: An adaptation of "listio" from Argonne's PVFS.
+ */
extern ioid_t SYSIO_INTERFACE_NAME(iwrite64x)(int fd,
- const struct iovec *iov,
+ const struct iovec *iov,
size_t iov_count,
- const struct xtvec64 *xtv,
+ const struct xtvec64 *xtv,
size_t xtv_count);
#endif
+
+/*
+ * Write from buffers mapped by iovec to regions mapped
+ * by xtvec.
+ *
+ * NB: An adaptation of "listio" from Argonne's PVFS.
+ */
extern ssize_t SYSIO_INTERFACE_NAME(writex)(int fd,
- const struct iovec *iov,
+ const struct iovec *iov,
size_t iov_count,
- const struct xtvec *xtv,
+ const struct xtvec *xtv,
size_t xtv_count);
+
#ifdef __USE_LARGEFILE64
+/*
+ * Write from buffers mapped by iovec to regions mapped
+ * by xtvec.
+ *
+ * NB: An adaptation of "listio" from Argonne's PVFS.
+ */
extern ssize_t SYSIO_INTERFACE_NAME(write64x)(int fd,
const struct iovec *iov,
size_t iov_count,
- const struct xtvec64 *xtv,
+ const struct xtvec64 *xtv,
size_t xtv_count);
#endif
+#endif /* ! _XTIO_H_ */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff