root / src / include / xseg / xseg.h @ 9f38e25a
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/*
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* Copyright 2012 GRNET S.A. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* 1. Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* The views and conclusions contained in the software and
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* documentation are those of the authors and should not be
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* interpreted as representing official policies, either expressed
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* or implied, of GRNET S.A.
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*/
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#ifndef _XSEG_H
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#define _XSEG_H
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#ifndef XSEG_PAGE_SHIFT
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#define XSEG_PAGE_SHIFT 12 |
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#endif
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#define XSEG_BASE (0x37fd0UL << XSEG_PAGE_SHIFT) |
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#define XSEG_BASE_AS_PTR ((void *)XSEG_BASE) |
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#define XSEG_BASE_AS_BUF ((char *)XSEG_BASE) |
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#define XSEG_OFFSET(base, ptr) ((unsigned long)(ptr) - (unsigned long)(base)) |
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#define XSEG_PTR_CONVERT(ptr, src, dst) ((void *)((unsigned long)(dst) + XSEG_OFFSET(src, ptr))) |
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#define XSEG_TAKE_PTR(ptr, base) XSEG_PTR_CONVERT(ptr, XSEG_BASE, base)
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#define XSEG_MAKE_PTR(ptr, base) XSEG_PTR_CONVERT(ptr, base, XSEG_BASE)
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#include <stdint.h> |
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#include <sys/time.h> |
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#include <xseg/version.h> |
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#include <xseg/util.h> |
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#include <xseg/xq.h> |
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#include <xseg/xobj.h> |
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#include <xseg/xhash.h> |
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#include <xseg/xpool.h> |
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typedef uint64_t xserial;
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typedef uint32_t xport;
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#define NoSerial ((xserial)-1) |
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#define NoPort ((xport) -1) |
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#ifndef XSEG_DEF_REQS
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#define XSEG_DEF_REQS 256 |
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#endif
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#ifndef XSEG_DEF_MAX_ALLOCATED_REQS
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#define XSEG_DEF_MAX_ALLOCATED_REQS 1024 |
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#endif
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/* hard limit on max allocated requests per port */
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//FIXME make this a dynamicly calculated value based
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//on heap_size and request_h->size
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#ifndef XSEG_MAX_ALLOCATED_REQS
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#define XSEG_MAX_ALLOCATED_REQS 10000 |
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#endif
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#if XSEG_DEF_MAX_ALLOCATED_REQS > XSEG_MAX_ALLOCATED_REQS
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#error "XSEG_DEF_MAX_ALLOCATED_REQS should be less than XSEG_MAX_ALLOCATED_REQS" |
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#endif
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#if XSEG_DEF_REQS > XSEG_MAX_ALLOCATED_REQS
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#error "XSEG_DEF_REQS should me less than XSEG_MAX_ALLOCATED_REQS" |
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#endif
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#ifndef MAX_PATH_LEN
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#define MAX_PATH_LEN 32 |
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#endif
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#define XSEG_NAMESIZE 256 |
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#define XSEG_TNAMESIZE 32 |
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/* Peers and Segments
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*
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* Segments are memory segments shared among peers.
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* Peers are local execution contexes that share a segment.
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*
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* xseg_type and xseg_peer
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*
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* A peer needs an xseg_type in order to
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* create or access a certain segment type,
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* and it needs an xseg_peer in order to
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* communicate with a certain type of peer.
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* Both segment and peer types are identified by name strings.
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*
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* Note that each peer (that is, context) type will need
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* different code to access the same type of segment or peer.
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* Therefore each peer must have its own "customized" version
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* of the xseg library.
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*
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* This is accomplished by mechanisms for registering both
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* xseg_type's and xseg_peer's. This can be done at both at build time
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* and at runtime, through a plugin-loading mechanism (where applicable).
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* The plugin namespace serves both segment and peer type namespace,
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* so if a segment type has the same name with a peer type,
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* they must be provided by the same plugin.
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*
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* Note also that peers of different types may share the same segment.
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* Therefore each peer must know the type of each peer it needs to
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* communicate with, and have a driver for it.
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*
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*/
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struct xseg;
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struct xseg_port;
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#define XSEG_MAGIC (0xcafe0000) |
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#define MAGIC_OBJH (XSEG_MAGIC | 1) |
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#define MAGIC_REQ (XSEG_MAGIC | 2) |
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#define MAGIC_PORT (XSEG_MAGIC | 3) |
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struct xseg_operations {
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void (*mfree)(void *mem); |
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long (*allocate)(const char *name, uint64_t size); |
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long (*deallocate)(const char *name); |
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void *(*map)(const char *name, uint64_t size, struct xseg *seg); |
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void (*unmap)(void *xseg, uint64_t size); |
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}; |
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struct xseg_type {
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struct xseg_operations ops;
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char name[XSEG_TNAMESIZE];
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}; |
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struct xseg_peer_operations {
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int (*init_signal_desc)(struct xseg *xseg, void *sd); |
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void (*quit_signal_desc)(struct xseg *xseg, void *sd); |
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void *(*alloc_data)(struct xseg *xseg); |
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void (*free_data)(struct xseg *xseg, void *data); |
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void *(*alloc_signal_desc)(struct xseg *xseg, void *data); |
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void (*free_signal_desc)(struct xseg *xseg, void *data, void *sd); |
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int (*local_signal_init)(struct xseg *xseg, xport portno); |
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void (*local_signal_quit)(struct xseg *xseg, xport portno); |
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int (*remote_signal_init)(void); |
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void (*remote_signal_quit)(void); |
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int (*signal_join)(struct xseg *xseg); |
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int (*signal_leave)(struct xseg *xseg); |
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int (*prepare_wait)(struct xseg *xseg, uint32_t portno); |
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int (*cancel_wait)(struct xseg *xseg, uint32_t portno); |
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int (*wait_signal)(struct xseg *xseg, void *sd, uint32_t usec_timeout); |
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int (*signal)(struct xseg *xseg, uint32_t portno); |
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void *(*malloc)(uint64_t size);
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void *(*realloc)(void *mem, uint64_t size); |
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void (*mfree)(void *mem); |
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}; |
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struct xseg_peer {
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struct xseg_peer_operations peer_ops;
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char name[XSEG_TNAMESIZE];
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}; |
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struct xseg_config {
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uint64_t heap_size; /* heap size in MB */
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uint32_t nr_ports; |
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uint32_t dynports; |
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uint32_t page_shift; /* the alignment unit */
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char type[XSEG_TNAMESIZE]; /* zero-terminated identifier */ |
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char name[XSEG_NAMESIZE]; /* zero-terminated identifier */ |
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}; |
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struct xseg_port {
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struct xlock fq_lock;
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struct xlock rq_lock;
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struct xlock pq_lock;
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xptr free_queue; |
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xptr request_queue; |
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xptr reply_queue; |
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uint64_t owner; |
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uint64_t peer_type; |
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uint32_t portno; |
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uint64_t max_alloc_reqs; |
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uint64_t alloc_reqs; |
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struct xlock port_lock;
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xptr signal_desc; |
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uint32_t flags; |
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}; |
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struct xseg_request;
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struct xseg_task {
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uint64_t epoch; |
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struct xseg_request *req;
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xqindex *deps; |
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xqindex nr_deps; |
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xqindex __alloced_deps; |
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}; |
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/* OPS */
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#define X_PING 0 |
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#define X_READ 1 |
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#define X_WRITE 2 |
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#define X_SYNC 3 |
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#define X_TRUNCATE 4 |
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#define X_DELETE 5 |
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#define X_ACQUIRE 6 |
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#define X_RELEASE 7 |
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#define X_COPY 8 |
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#define X_CLONE 9 |
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#define X_COMMIT 10 |
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#define X_INFO 11 |
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#define X_MAPR 12 |
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#define X_MAPW 13 |
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#define X_OPEN 14 |
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#define X_CLOSE 15 |
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#define X_SNAPSHOT 16 |
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#define X_HASH 17 |
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/* REQ FLAGS */
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#define XF_NOSYNC (1 << 0) |
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#define XF_FLUSH (1 << 1) |
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#define XF_FUA (1 << 2) |
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#define XF_FORCE (1 << 3) |
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#define XF_CONTADDR (1 << 4) |
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/* PORT FLAGS */
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#define CAN_ACCEPT (1 << 0) |
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#define CAN_RECEIVE (1 << 1) |
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/* STATES */
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#define XS_SERVED (1 << 0) |
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#define XS_FAILED (1 << 1) |
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#define XS_ACCEPTED (1 << 2) |
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#define XS_PENDING (2 << 2) |
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#define XS_SERVING (3 << 2) |
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#define XS_CONCLUDED (3 << 2) |
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struct xseg_request {
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xserial serial; |
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uint64_t offset; |
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uint64_t size; |
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uint64_t serviced; |
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xptr data; |
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uint64_t datalen; |
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xptr target; |
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uint32_t targetlen; |
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uint32_t op; |
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volatile uint32_t state;
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uint32_t flags; |
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xport src_portno; |
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xport transit_portno; |
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xport dst_portno; |
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xport effective_dst_portno; |
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struct xq path;
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xqindex path_bufs[MAX_PATH_LEN]; |
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/* pad */
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xptr buffer; |
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uint64_t bufferlen; |
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xqindex task; |
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uint64_t priv; |
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struct timeval timestamp;
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uint64_t elapsed; |
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}; |
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struct xseg_shared {
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uint64_t flags; |
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char (*peer_types)[XSEG_TNAMESIZE]; /* alignment? */ |
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xptr *peer_type_data; |
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uint32_t nr_peer_types; |
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}; |
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struct xseg_private {
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struct xseg_type segment_type;
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struct xseg_peer peer_type;
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struct xseg_peer **peer_types;
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void **peer_type_data;
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uint32_t max_peer_types; |
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void (*wakeup)(uint32_t portno);
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xhash_t *req_data; |
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struct xlock reqdatalock;
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}; |
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struct xseg_counters {
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uint64_t avg_req_lat; |
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uint64_t req_cnt; |
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}; |
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struct xseg {
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uint64_t version; |
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uint64_t segment_size; |
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struct xseg *segment;
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struct xheap *heap;
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struct xobject_h *object_handlers;
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struct xobject_h *request_h;
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struct xobject_h *port_h;
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xptr *ports; |
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xport *path_next, *dst_gw; |
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struct xseg_shared *shared;
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struct xseg_private *priv;
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uint32_t max_peer_types; |
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struct xseg_config config;
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struct xseg_counters counters;
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}; |
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#define XSEG_F_LOCK 0x1 |
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/* ================= XSEG REQUEST INTERFACE ================================= */
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/* ___________________ _________ */
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/* / \ / \ */
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int xseg_initialize ( void ); |
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int xseg_finalize ( void ); |
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int xseg_parse_spec ( char * spec, |
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struct xseg_config * config );
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struct xseg_port * xseg_bind_port ( struct xseg * xseg, |
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uint32_t portno, |
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void * sd );
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static uint32_t xseg_portno ( struct xseg * xseg, |
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struct xseg_port * port );
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/* \___________________/ \_________/ */
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/* ___________________ _________ */
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/* / \ / \ */
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int xseg_register_type ( struct xseg_type * type ); |
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int xseg_unregister_type ( const char * name ); |
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int xseg_register_peer ( struct xseg_peer * peer ); |
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int xseg_unregister_peer ( const char * name ); |
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void xseg_report_peer_types( void ); |
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int64_t xseg_enable_driver ( struct xseg * xseg,
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const char * name ); |
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int xseg_disable_driver ( struct xseg * xseg, |
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const char * name ); |
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/* \___________________/ \_________/ */
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/* ___________________ _________ */
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/* / \ / \ */
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int xseg_create ( struct xseg_config * cfg ); |
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void xseg_destroy ( struct xseg * xseg ); |
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/* \___________________/ \_________/ */
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/* ___________________ _________ */
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/* / \ / \ */
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struct xseg * xseg_join ( char * segtype, |
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char * segname,
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char * peertype,
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void (* wakeup )
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(uint32_t portno )); |
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void xseg_leave ( struct xseg * xseg ); |
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/* \___________________/ \_________/ */
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/* ___________________ _________ */
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/* / \ / \ */
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int xseg_alloc_requests ( struct xseg * xseg, |
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uint32_t portno, |
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uint32_t nr ); |
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int xseg_free_requests ( struct xseg * xseg, |
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uint32_t portno, |
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int nr );
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struct xseg_request * xseg_get_request ( struct xseg * xseg, |
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xport src_portno, |
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xport dst_portno, |
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uint32_t flags ); |
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int xseg_put_request ( struct xseg * xseg, |
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struct xseg_request * xreq,
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xport portno ); |
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int xseg_prep_request ( struct xseg * xseg, |
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struct xseg_request * xreq,
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uint32_t targetlen, |
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uint64_t datalen ); |
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/* \___________________/ \_________/ */
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/* ___________________ _________ */
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/* / \ / \ */
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xport xseg_submit ( struct xseg * xseg,
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struct xseg_request * xreq,
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xport portno, |
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uint32_t flags ); |
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|
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struct xseg_request * xseg_receive ( struct xseg * xseg, |
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xport portno, |
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uint32_t flags ); |
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/* \___________________/ \_________/ */
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/* ___________________ _________ */
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/* / \ / \ */
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struct xseg_request * xseg_accept ( struct xseg * xseg, |
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xport portno, |
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uint32_t flags ); |
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xport xseg_respond ( struct xseg * xseg,
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struct xseg_request * xreq,
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xport portno, |
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uint32_t flags ); |
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/* \___________________/ \_________/ */
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/* ___________________ _________ */
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/* / \ / \ */
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int xseg_prepare_wait ( struct xseg * xseg, |
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uint32_t portno ); |
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|
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int xseg_cancel_wait ( struct xseg * xseg, |
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uint32_t portno ); |
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|
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int xseg_wait_signal ( struct xseg * xseg, |
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void * sd,
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uint32_t utimeout ); |
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|
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int xseg_signal ( struct xseg * xseg, |
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uint32_t portno ); |
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/* \___________________/ \_________/ */
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|
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/* */
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/* ================= XSEG REQUEST INTERFACE ================================= */
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|
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struct xseg_port* xseg_get_port(struct xseg *xseg, uint32_t portno); |
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|
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extern char* xseg_get_data_nonstatic(struct xseg* xseg, struct xseg_request *req); |
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extern char* xseg_get_target_nonstatic(struct xseg* xseg, struct xseg_request *req); |
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extern void* xseg_get_signal_desc_nonstatic(struct xseg *xseg, struct xseg_port *port); |
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|
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static inline uint32_t xseg_portno(struct xseg *xseg, struct xseg_port *port) |
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{
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return port->portno;
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} |
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static inline char* xseg_get_target(struct xseg* xseg, struct xseg_request *req) |
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{
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return (char *) XPTR_TAKE(req->target, xseg->segment); |
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} |
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|
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static inline char* xseg_get_data(struct xseg* xseg, struct xseg_request *req) |
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{
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return (char *) XPTR_TAKE(req->data, xseg->segment); |
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} |
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|
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static inline void * xseg_get_signal_desc(struct xseg *xseg, struct xseg_port *port) |
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{
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return (void *) XPTR_TAKE(port->signal_desc, xseg->segment); |
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} |
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|
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struct xobject_h * xseg_get_objh(struct xseg *xseg, uint32_t magic, uint64_t size); |
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void xseg_put_objh(struct xseg *xseg, struct xobject_h *objh); |
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|
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#define xseg_get_queue(__xseg, __port, __queue) \
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((struct xq *) XPTR_TAKE(__port->__queue, __xseg->segment))
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|
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|
| 472 |
int xseg_set_path_next(struct xseg *xseg, xport portno, xport next); |
| 473 |
|
| 474 |
int xseg_set_req_data(struct xseg *xseg, struct xseg_request *xreq, void *data); |
| 475 |
int xseg_get_req_data(struct xseg *xseg, struct xseg_request *xreq, void **data); |
| 476 |
|
| 477 |
int xseg_init_local_signal(struct xseg *xseg, xport portno); |
| 478 |
void xseg_quit_local_signal(struct xseg *xseg, xport portno); |
| 479 |
|
| 480 |
int xseg_resize_request (struct xseg *xseg, struct xseg_request *req, |
| 481 |
uint32_t new_targetlen, uint64_t new_datalen); |
| 482 |
|
| 483 |
int xseg_set_max_requests(struct xseg *xseg, xport portno, uint64_t nr_reqs); |
| 484 |
uint64_t xseg_get_max_requests(struct xseg *xseg, xport portno);
|
| 485 |
uint64_t xseg_get_allocated_requests(struct xseg *xseg, xport portno);
|
| 486 |
int xseg_set_freequeue_size(struct xseg *xseg, xport portno, xqindex size, |
| 487 |
uint32_t flags); |
| 488 |
|
| 489 |
xport xseg_forward(struct xseg *xseg, struct xseg_request *req, xport new_dst, |
| 490 |
xport portno, uint32_t flags); |
| 491 |
|
| 492 |
struct xseg_port *xseg_bind_dynport(struct xseg *xseg); |
| 493 |
int xseg_leave_dynport(struct xseg *xseg, struct xseg_port *port); |
| 494 |
extern uint32_t xseg_portno_nonstatic(struct xseg *xseg, struct xseg_port *port); |
| 495 |
#endif
|