269 lines
5.9 KiB
C
269 lines
5.9 KiB
C
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/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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gsp.h
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Abstract:
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Private gs definitions
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Author:
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Ahmed Mohamed (ahmedm) 12, 01, 2000
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Revision History:
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--*/
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#ifndef _GS_P_H
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#define _GS_P_H
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#include "type.h"
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#include "msg.h"
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#include <Mmsystem.h>
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#define GS_DEFAULT_WINDOW_SZ 8
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#define GS_DEFAULT_MAX_MSG_SZ GS_MAX_MSG_SZ
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extern int GS_MAX_MSG_SZ;
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#define GsGroupTableSize 16
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#define GS_FLAGS_CLOSE 0x01
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#define GS_FLAGS_CONTINUED 0x02
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#define GS_FLAGS_DELIVERED 0x04
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#define GS_FLAGS_QUEUED 0x08 // in receive queue
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#define GS_FLAGS_LAST 0x10
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#define GS_FLAGS_REPLAY 0x20
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#define GS_FLAGS_REPLY 0x40
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#define GS_FLAGS_PTP 0x80
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#define GS_FLAGS_MASK 0x07
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#define GS_GROUP_STATE_FREE 0x0
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#define GS_GROUP_STATE_NEW 0x01
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#define GS_GROUP_STATE_FORM 0x02
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#define GS_GROUP_STATE_JOIN 0x04
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#define GS_GROUP_STATE_EVICT 0x08
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#define GS_GROUP_FLAGS_RECOVERY 0x10
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#define GS_GROUP_FLAGS_NEWMASTER 0x20
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#define GS_CONTEXT_INVALID_ID ((gs_cookie_t) -1)
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typedef struct gs_member {
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gs_memberid_t m_id;
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gs_sequence_t m_expected_seq; // next expected 1-to-1 sequence
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gs_msg_t *m_queue; // list of queued 1-to-1 msgs
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// gs_addr_t m_uaddr; // ip addr
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UINT16 m_wsz; // max. window sz
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UINT16 m_msz; // max. msg sz
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}gs_member_t;
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typedef struct gs_ctx {
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gs_gid_t ctx_gid;
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gs_cookie_t ctx_id;
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PVOID ctx_buf;
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gs_sequence_t ctx_mseq;
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gs_sequence_t ctx_bnum;
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UINT16 ctx_flags;
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gs_msg_t *ctx_msg;
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PVOID *ctx_rbuf;
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IO_STATUS_BLOCK *ctx_ios;
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ULONG ctx_mask;
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gs_event_t ctx_syncevent;
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gs_event_t ctx_event;
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MMRESULT ctx_timer;
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}gs_context_t;
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typedef struct {
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gs_semaphore_t s_sema; // how many concurrent sends are allowed
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gs_context_t *s_ctxpool; // send contexts pool
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UINT16 s_wsz; // max. window sz
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gs_msg_t *s_waitqueue; // list of msgs waiting for global sequence
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gs_sequence_t s_lseq; // last completed mseq
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gs_sequence_t s_mseq; // last allocated global sequence
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gs_sequence_t s_bnum; // next 1-to-1 sequence for a given mseq
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}gs_send_state_t;
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typedef struct {
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gs_sequence_t r_mseq; // next expected global sequence
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gs_sequence_t r_bnum; // next expected batch sequence
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gs_msg_t **r_next; // next message to deliver to app
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gs_msg_t *r_head; // head of receive queue
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}gs_recv_state_t;
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typedef struct gs_rblk {
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struct gs_rblk *next;
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gs_sequence_t mseq;
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ULONG have;
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}gs_rblk_t;
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typedef struct {
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gs_event_t rs_event;
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ULONG rs_dset; // down member set
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ULONG rs_mset; // member set to hear from
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UINT16 rs_epoch;
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UINT16 rs_sz;
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gs_rblk_t *rs_list;
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}gs_recovery_state_t;
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typedef struct gs_group {
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gs_lock_t g_lock;
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gs_gid_t g_id; // cluster wide group id
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gs_nid_t g_nid; // local cluster node id
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// int g_port; // group port number
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// gs_addr_t g_maddr; // multicast ip addr
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UINT8 g_state;
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UINT8 g_pending;
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UINT16 g_curview; // increment on every member down/up
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UINT16 g_startview; // set to curview on member down
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// member information
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UINT16 g_sz;
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gs_member_t *g_mlist;
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gs_memberid_t g_mid; // master id
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gs_mset_t g_mset; // current member set
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// master/send/receive states
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gs_sequence_t g_global_seq; // next global sequence number
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gs_send_state_t g_send;
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gs_recv_state_t g_recv;
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// event handler
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gs_callback_t g_callback;
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// recovery state
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gs_recovery_state_t *g_rs;
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int g_namelen;
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char *g_name;
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}gs_group_t;
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#define GspLookupContext(gd, cid) &gd->g_send.s_ctxpool[cid]
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gs_group_t *
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GspLookupGroup(gs_gid_t gid);
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void
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GspProcessReply(gs_group_t *gd, gs_context_t *ctx,
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int sid, char *buf, int rlen,
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NTSTATUS status);
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void
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GspDispatch(gs_group_t *gd);
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void
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GspOpenContext(gs_group_t *gd, gs_context_t **context);
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void
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GspCloseContext(gs_group_t *gd, gs_context_t *ctx);
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void
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GspOrderInsert(gs_group_t *gd, gs_msg_t *head, gs_msg_t *tail,
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gs_sequence_t mseq, gs_sequence_t bnum);
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void
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GspUOrderInsert(gs_group_t *gd, gs_msg_t *head, gs_msg_t *tail,
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gs_sequence_t mseq, gs_sequence_t lseq);
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void
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GspDeliverMsg(gs_group_t *gd, gs_msg_t *msg);
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void
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GspSendAck(gs_group_t *gd, gs_msg_t *msg, NTSTATUS status);
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void
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GspRemoveMsg(gs_group_t *gd, gs_msg_t *msg);
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NTSTATUS
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GspSendDirectedRequest(gs_group_t *gd, gs_context_t *ctx, gs_event_t ev,
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int memberid, gs_tag_t tag,
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PVOID buf, UINT32 len,
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PVOID rbuf, UINT32 rlen,
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IO_STATUS_BLOCK *status,
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UINT32 flags, UINT32 type);
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// Response of name server during phase 1 of join
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typedef struct {
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union {
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USHORT id;
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USHORT wsz;
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};
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USHORT owner;
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char name[GS_MAX_NAME_SZ];
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}gs_ns_info_t;
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// Response of current master to a join request
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typedef struct {
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UINT16 sz;
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UINT16 viewnum;
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gs_sequence_t mseq;
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gs_mset_t mset; // current member set
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}gs_join_info_t;
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// Response of current master to a sequence allocation request
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typedef struct {
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gs_sequence_t mseq;
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UINT16 viewnum;
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}gs_seq_info_t;
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typedef struct {
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gs_sequence_t cur_mseq, last_mseq;
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UINT16 have_sz;
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gs_sequence_t have_set[];
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}gs_recovery_info_t;
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typedef struct {
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gs_sequence_t down_mseq;
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UINT16 view;
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UINT16 sz;
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struct {
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gs_sequence_t mseq;
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}skip_set[];
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}gs_sync_info_t;
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#ifndef min
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#define min(a, b) ((a) < (b) ? (a) : (b))
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#endif
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#define GspValidateView(gd, vn) ((vn) >= (gd)->g_startview && (vn) <= (gd)->g_curview)
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NTSTATUS
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GspSendRequest(gs_group_t *gd, gs_context_t *ctx, gs_event_t ev,
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int type, gs_sequence_t mid, gs_tag_t tag,
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PVOID buf, UINT32 len,
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PVOID rbuf[], UINT32 rlen,
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IO_STATUS_BLOCK status[],
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UINT32 flags, gs_join_info_t *);
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void
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GspProcessWaitQueue(gs_group_t *gd, gs_seq_info_t *);
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void
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GspAllocateSequence(gs_group_t *gd);
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void
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GspCleanQueue(gs_group_t *gd, gs_sequence_t mseq);
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void
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GspAddMember(gs_group_t *, gs_memberid_t, int);
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void
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GspPhase1NodeDown(ULONG mask);
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void
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GspPhase2NodeDown(ULONG mask);
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#endif
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