X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=src%2Fceph%2Fsrc%2Fmds%2FLocker.h;fp=src%2Fceph%2Fsrc%2Fmds%2FLocker.h;h=0000000000000000000000000000000000000000;hb=7da45d65be36d36b880cc55c5036e96c24b53f00;hp=032d5ae83e6687054f377c1faca05538afc74fc9;hpb=691462d09d0987b47e112d6ee8740375df3c51b2;p=stor4nfv.git diff --git a/src/ceph/src/mds/Locker.h b/src/ceph/src/mds/Locker.h deleted file mode 100644 index 032d5ae..0000000 --- a/src/ceph/src/mds/Locker.h +++ /dev/null @@ -1,285 +0,0 @@ -// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- -// vim: ts=8 sw=2 smarttab -/* - * Ceph - scalable distributed file system - * - * Copyright (C) 2004-2006 Sage Weil - * - * This is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License version 2.1, as published by the Free Software - * Foundation. See file COPYING. - * - */ - -#ifndef CEPH_MDS_LOCKER_H -#define CEPH_MDS_LOCKER_H - -#include "include/types.h" - -#include -#include -#include -using std::map; -using std::list; -using std::set; - -class MDSRank; -class Session; -class CInode; -class CDentry; -struct SnapRealm; - -class Message; - -class MLock; - -class Capability; - -class SimpleLock; -class ScatterLock; -class LocalLock; - -#include "SimpleLock.h" -#include "Mutation.h" - -class Locker { -private: - MDSRank *mds; - MDCache *mdcache; - - public: - Locker(MDSRank *m, MDCache *c) : mds(m), mdcache(c) {} - - SimpleLock *get_lock(int lock_type, MDSCacheObjectInfo &info); - - void dispatch(Message *m); - void handle_lock(MLock *m); - - void tick(); - - void nudge_log(SimpleLock *lock); - -protected: - void send_lock_message(SimpleLock *lock, int msg); - void send_lock_message(SimpleLock *lock, int msg, const bufferlist &data); - - // -- locks -- - void _drop_rdlocks(MutationImpl *mut, set *pneed_issue); - void _drop_non_rdlocks(MutationImpl *mut, set *pneed_issue); -public: - void include_snap_rdlocks(set& rdlocks, CInode *in); - void include_snap_rdlocks_wlayout(set& rdlocks, CInode *in, - file_layout_t **layout); - - bool acquire_locks(MDRequestRef& mdr, - set &rdlocks, - set &wrlocks, - set &xlocks, - map *remote_wrlocks=NULL, - CInode *auth_pin_freeze=NULL, - bool auth_pin_nonblock=false); - - void notify_freeze_waiter(MDSCacheObject *o); - void cancel_locking(MutationImpl *mut, set *pneed_issue); - void drop_locks(MutationImpl *mut, set *pneed_issue=0); - void set_xlocks_done(MutationImpl *mut, bool skip_dentry=false); - void drop_non_rdlocks(MutationImpl *mut, set *pneed_issue=0); - void drop_rdlocks(MutationImpl *mut, set *pneed_issue=0); - - void eval_gather(SimpleLock *lock, bool first=false, bool *need_issue=0, list *pfinishers=0); - void eval(SimpleLock *lock, bool *need_issue); - void eval_any(SimpleLock *lock, bool *need_issue, list *pfinishers=0, bool first=false) { - if (!lock->is_stable()) - eval_gather(lock, first, need_issue, pfinishers); - else if (lock->get_parent()->is_auth()) - eval(lock, need_issue); - } - - void eval_scatter_gathers(CInode *in); - - void eval_cap_gather(CInode *in, set *issue_set=0); - - bool eval(CInode *in, int mask, bool caps_imported=false); - void try_eval(MDSCacheObject *p, int mask); - void try_eval(SimpleLock *lock, bool *pneed_issue); - - bool _rdlock_kick(SimpleLock *lock, bool as_anon); - bool rdlock_try(SimpleLock *lock, client_t client, MDSInternalContextBase *c); - bool rdlock_start(SimpleLock *lock, MDRequestRef& mut, bool as_anon=false); - void rdlock_finish(SimpleLock *lock, MutationImpl *mut, bool *pneed_issue); - bool can_rdlock_set(set& locks); - bool rdlock_try_set(set& locks); - void rdlock_take_set(set& locks, MutationRef& mut); - - void wrlock_force(SimpleLock *lock, MutationRef& mut); - bool wrlock_start(SimpleLock *lock, MDRequestRef& mut, bool nowait=false); - void wrlock_finish(SimpleLock *lock, MutationImpl *mut, bool *pneed_issue); - - void remote_wrlock_start(SimpleLock *lock, mds_rank_t target, MDRequestRef& mut); - void remote_wrlock_finish(SimpleLock *lock, mds_rank_t target, MutationImpl *mut); - - bool xlock_start(SimpleLock *lock, MDRequestRef& mut); - void _finish_xlock(SimpleLock *lock, client_t xlocker, bool *pneed_issue); - void xlock_finish(SimpleLock *lock, MutationImpl *mut, bool *pneed_issue); - - void xlock_export(SimpleLock *lock, MutationImpl *mut); - void xlock_import(SimpleLock *lock); - - - // simple -public: - void try_simple_eval(SimpleLock *lock); - bool simple_rdlock_try(SimpleLock *lock, MDSInternalContextBase *con); -protected: - void simple_eval(SimpleLock *lock, bool *need_issue); - void handle_simple_lock(SimpleLock *lock, MLock *m); - -public: - bool simple_sync(SimpleLock *lock, bool *need_issue=0); -protected: - void simple_lock(SimpleLock *lock, bool *need_issue=0); - void simple_excl(SimpleLock *lock, bool *need_issue=0); - void simple_xlock(SimpleLock *lock); - - - // scatter -public: - void scatter_eval(ScatterLock *lock, bool *need_issue); // public for MDCache::adjust_subtree_auth() - - void scatter_tick(); - void scatter_nudge(ScatterLock *lock, MDSInternalContextBase *c, bool forcelockchange=false); - -protected: - void handle_scatter_lock(ScatterLock *lock, MLock *m); - bool scatter_scatter_fastpath(ScatterLock *lock); - void scatter_scatter(ScatterLock *lock, bool nowait=false); - void scatter_tempsync(ScatterLock *lock, bool *need_issue=0); - - void scatter_writebehind(ScatterLock *lock); - - void scatter_writebehind_finish(ScatterLock *lock, MutationRef& mut); - - xlist updated_scatterlocks; -public: - void mark_updated_scatterlock(ScatterLock *lock); - - - void handle_reqrdlock(SimpleLock *lock, MLock *m); - - - - // caps - - // when to defer processing client cap release or writeback due to being - // frozen. the condition must be consistent across handle_client_caps and - // process_request_cap_release to preserve ordering. - bool should_defer_client_cap_frozen(CInode *in); - - void process_request_cap_release(MDRequestRef& mdr, client_t client, const ceph_mds_request_release& r, - const string &dname); - - void kick_cap_releases(MDRequestRef& mdr); - void kick_issue_caps(CInode *in, client_t client, ceph_seq_t seq); - - void remove_client_cap(CInode *in, client_t client); - - void get_late_revoking_clients(std::list *result) const; - bool any_late_revoking_caps(xlist const &revoking) const; - - protected: - bool _need_flush_mdlog(CInode *in, int wanted_caps); - void adjust_cap_wanted(Capability *cap, int wanted, int issue_seq); - void handle_client_caps(class MClientCaps *m); - void _update_cap_fields(CInode *in, int dirty, MClientCaps *m, inode_t *pi); - void _do_snap_update(CInode *in, snapid_t snap, int dirty, snapid_t follows, client_t client, MClientCaps *m, MClientCaps *ack); - void _do_null_snapflush(CInode *head_in, client_t client, snapid_t last=CEPH_NOSNAP); - bool _do_cap_update(CInode *in, Capability *cap, int dirty, snapid_t follows, MClientCaps *m, - MClientCaps *ack=0, bool *need_flush=NULL); - void handle_client_cap_release(class MClientCapRelease *m); - void _do_cap_release(client_t client, inodeno_t ino, uint64_t cap_id, ceph_seq_t mseq, ceph_seq_t seq); - void caps_tick(); - - // Maintain a global list to quickly find if any caps are late revoking - xlist revoking_caps; - // Maintain a per-client list to find clients responsible for late ones quickly - std::map > revoking_caps_by_client; - - // local -public: - void local_wrlock_grab(LocalLock *lock, MutationRef& mut); -protected: - bool local_wrlock_start(LocalLock *lock, MDRequestRef& mut); - void local_wrlock_finish(LocalLock *lock, MutationImpl *mut); - bool local_xlock_start(LocalLock *lock, MDRequestRef& mut); - void local_xlock_finish(LocalLock *lock, MutationImpl *mut); - - - // file -public: - void file_eval(ScatterLock *lock, bool *need_issue); -protected: - void handle_file_lock(ScatterLock *lock, MLock *m); - void scatter_mix(ScatterLock *lock, bool *need_issue=0); - void file_excl(ScatterLock *lock, bool *need_issue=0); - void file_xsyn(SimpleLock *lock, bool *need_issue=0); - -public: - void file_recover(ScatterLock *lock); - -private: - xlist updated_filelocks; -public: - void mark_updated_Filelock(ScatterLock *lock); - - // -- file i/o -- -public: - version_t issue_file_data_version(CInode *in); - Capability* issue_new_caps(CInode *in, int mode, Session *session, SnapRealm *conrealm, bool is_replay); - bool issue_caps(CInode *in, Capability *only_cap=0); - void issue_caps_set(set& inset); - void issue_truncate(CInode *in); - void revoke_stale_caps(Session *session); - void revoke_stale_caps(Capability *cap); - void resume_stale_caps(Session *session); - void remove_stale_leases(Session *session); - -public: - void request_inode_file_caps(CInode *in); -protected: - void handle_inode_file_caps(class MInodeFileCaps *m); - - void file_update_finish(CInode *in, MutationRef& mut, bool share_max, bool issue_client_cap, - client_t client, MClientCaps *ack); -private: - uint64_t calc_new_max_size(inode_t *pi, uint64_t size); -public: - void calc_new_client_ranges(CInode *in, uint64_t size, - map* new_ranges, - bool *max_increased); - bool check_inode_max_size(CInode *in, bool force_wrlock=false, - uint64_t newmax=0, uint64_t newsize=0, - utime_t mtime=utime_t()); - void share_inode_max_size(CInode *in, Capability *only_cap=0); - -private: - friend class C_MDL_CheckMaxSize; - friend class C_MDL_RequestInodeFileCaps; - friend class C_Locker_FileUpdate_finish; - friend class C_Locker_RetryCapRelease; - friend class C_Locker_Eval; - friend class C_Locker_ScatterWB; - friend class LockerContext; - friend class LockerLogContext; - - - // -- client leases -- -public: - void handle_client_lease(struct MClientLease *m); - - void issue_client_lease(CDentry *dn, client_t client, bufferlist &bl, utime_t now, Session *session); - void revoke_client_leases(SimpleLock *lock); -}; - - -#endif