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diff --git a/src/osdc/ObjectCacher.h b/src/osdc/ObjectCacher.h
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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+#ifndef CEPH_OBJECTCACHER_H
+#define CEPH_OBJECTCACHER_H
+
+#include "include/types.h"
+#include "include/lru.h"
+#include "include/Context.h"
+#include "include/xlist.h"
+#include "include/common_fwd.h"
+
+#include "common/Cond.h"
+#include "common/Finisher.h"
+#include "common/Thread.h"
+#include "common/zipkin_trace.h"
+
+#include "Objecter.h"
+#include "Striper.h"
+
+class WritebackHandler;
+
+enum {
+ l_objectcacher_first = 25000,
+
+ l_objectcacher_cache_ops_hit, // ops we satisfy completely from cache
+ l_objectcacher_cache_ops_miss, // ops we don't satisfy completely from cache
+
+ l_objectcacher_cache_bytes_hit, // bytes read directly from cache
+
+ l_objectcacher_cache_bytes_miss, // bytes we couldn't read directly
+
+ // from cache
+
+ l_objectcacher_data_read, // total bytes read out
+ l_objectcacher_data_written, // bytes written to cache
+ l_objectcacher_data_flushed, // bytes flushed to WritebackHandler
+ l_objectcacher_overwritten_in_flush, // bytes overwritten while
+ // flushing is in progress
+
+ l_objectcacher_write_ops_blocked, // total write ops we delayed due
+ // to dirty limits
+ l_objectcacher_write_bytes_blocked, // total number of write bytes
+ // we delayed due to dirty
+ // limits
+ l_objectcacher_write_time_blocked, // total time in seconds spent
+ // blocking a write due to dirty
+ // limits
+
+ l_objectcacher_last,
+};
+
+class ObjectCacher {
+ PerfCounters *perfcounter;
+ public:
+ CephContext *cct;
+ class Object;
+ struct ObjectSet;
+ class C_ReadFinish;
+
+ typedef void (*flush_set_callback_t) (void *p, ObjectSet *oset);
+
+ // read scatter/gather
+ struct OSDRead {
+ std::vector<ObjectExtent> extents;
+ snapid_t snap;
+ ceph::buffer::list *bl;
+ int fadvise_flags;
+ OSDRead(snapid_t s, ceph::buffer::list *b, int f)
+ : snap(s), bl(b), fadvise_flags(f) {}
+ };
+
+ OSDRead *prepare_read(snapid_t snap, ceph::buffer::list *b, int f) const {
+ return new OSDRead(snap, b, f);
+ }
+
+ // write scatter/gather
+ struct OSDWrite {
+ std::vector<ObjectExtent> extents;
+ SnapContext snapc;
+ ceph::buffer::list bl;
+ ceph::real_time mtime;
+ int fadvise_flags;
+ ceph_tid_t journal_tid;
+ OSDWrite(const SnapContext& sc, const ceph::buffer::list& b, ceph::real_time mt,
+ int f, ceph_tid_t _journal_tid)
+ : snapc(sc), bl(b), mtime(mt), fadvise_flags(f),
+ journal_tid(_journal_tid) {}
+ };
+
+ OSDWrite *prepare_write(const SnapContext& sc,
+ const ceph::buffer::list &b,
+ ceph::real_time mt,
+ int f,
+ ceph_tid_t journal_tid) const {
+ return new OSDWrite(sc, b, mt, f, journal_tid);
+ }
+
+
+
+ // ******* BufferHead *********
+ class BufferHead : public LRUObject {
+ public:
+ // states
+ static const int STATE_MISSING = 0;
+ static const int STATE_CLEAN = 1;
+ static const int STATE_ZERO = 2; // NOTE: these are *clean* zeros
+ static const int STATE_DIRTY = 3;
+ static const int STATE_RX = 4;
+ static const int STATE_TX = 5;
+ static const int STATE_ERROR = 6; // a read error occurred
+
+ private:
+ // my fields
+ int state;
+ int ref;
+ struct {
+ loff_t start, length; // bh extent in object
+ } ex;
+ bool dontneed; //indicate bh don't need by anyone
+ bool nocache; //indicate bh don't need by this caller
+
+ public:
+ Object *ob;
+ ceph::buffer::list bl;
+ ceph_tid_t last_write_tid; // version of bh (if non-zero)
+ ceph_tid_t last_read_tid; // tid of last read op (if any)
+ ceph::real_time last_write;
+ SnapContext snapc;
+ ceph_tid_t journal_tid;
+ int error; // holds return value for failed reads
+
+ std::map<loff_t, std::list<Context*> > waitfor_read;
+
+ // cons
+ explicit BufferHead(Object *o) :
+ state(STATE_MISSING),
+ ref(0),
+ dontneed(false),
+ nocache(false),
+ ob(o),
+ last_write_tid(0),
+ last_read_tid(0),
+ journal_tid(0),
+ error(0) {
+ ex.start = ex.length = 0;
+ }
+
+ // extent
+ loff_t start() const { return ex.start; }
+ void set_start(loff_t s) { ex.start = s; }
+ loff_t length() const { return ex.length; }
+ void set_length(loff_t l) { ex.length = l; }
+ loff_t end() const { return ex.start + ex.length; }
+ loff_t last() const { return end() - 1; }
+
+ // states
+ void set_state(int s) {
+ if (s == STATE_RX || s == STATE_TX) get();
+ if (state == STATE_RX || state == STATE_TX) put();
+ state = s;
+ }
+ int get_state() const { return state; }
+
+ inline int get_error() const {
+ return error;
+ }
+ inline void set_error(int _error) {
+ error = _error;
+ }
+
+ inline ceph_tid_t get_journal_tid() const {
+ return journal_tid;
+ }
+ inline void set_journal_tid(ceph_tid_t _journal_tid) {
+ journal_tid = _journal_tid;
+ }
+
+ bool is_missing() const { return state == STATE_MISSING; }
+ bool is_dirty() const { return state == STATE_DIRTY; }
+ bool is_clean() const { return state == STATE_CLEAN; }
+ bool is_zero() const { return state == STATE_ZERO; }
+ bool is_tx() const { return state == STATE_TX; }
+ bool is_rx() const { return state == STATE_RX; }
+ bool is_error() const { return state == STATE_ERROR; }
+
+ // reference counting
+ int get() {
+ ceph_assert(ref >= 0);
+ if (ref == 0) lru_pin();
+ return ++ref;
+ }
+ int put() {
+ ceph_assert(ref > 0);
+ if (ref == 1) lru_unpin();
+ --ref;
+ return ref;
+ }
+
+ void set_dontneed(bool v) {
+ dontneed = v;
+ }
+ bool get_dontneed() const {
+ return dontneed;
+ }
+
+ void set_nocache(bool v) {
+ nocache = v;
+ }
+ bool get_nocache() const {
+ return nocache;
+ }
+
+ inline bool can_merge_journal(BufferHead *bh) const {
+ return (get_journal_tid() == bh->get_journal_tid());
+ }
+
+ struct ptr_lt {
+ bool operator()(const BufferHead* l, const BufferHead* r) const {
+ const Object *lob = l->ob;
+ const Object *rob = r->ob;
+ const ObjectSet *loset = lob->oset;
+ const ObjectSet *roset = rob->oset;
+ if (loset != roset)
+ return loset < roset;
+ if (lob != rob)
+ return lob < rob;
+ if (l->start() != r->start())
+ return l->start() < r->start();
+ return l < r;
+ }
+ };
+ };
+
+ // ******* Object *********
+ class Object : public LRUObject {
+ private:
+ // ObjectCacher::Object fields
+ int ref;
+ ObjectCacher *oc;
+ sobject_t oid;
+ friend struct ObjectSet;
+
+ public:
+ uint64_t object_no;
+ ObjectSet *oset;
+ xlist<Object*>::item set_item;
+ object_locator_t oloc;
+ uint64_t truncate_size, truncate_seq;
+
+ bool complete;
+ bool exists;
+
+ std::map<loff_t, BufferHead*> data;
+
+ ceph_tid_t last_write_tid; // version of bh (if non-zero)
+ ceph_tid_t last_commit_tid; // last update committed.
+
+ int dirty_or_tx;
+
+ std::map< ceph_tid_t, std::list<Context*> > waitfor_commit;
+ xlist<C_ReadFinish*> reads;
+
+ Object(const Object&) = delete;
+ Object& operator=(const Object&) = delete;
+
+ Object(ObjectCacher *_oc, sobject_t o, uint64_t ono, ObjectSet *os,
+ object_locator_t& l, uint64_t ts, uint64_t tq) :
+ ref(0),
+ oc(_oc),
+ oid(o), object_no(ono), oset(os), set_item(this), oloc(l),
+ truncate_size(ts), truncate_seq(tq),
+ complete(false), exists(true),
+ last_write_tid(0), last_commit_tid(0),
+ dirty_or_tx(0) {
+ // add to set
+ os->objects.push_back(&set_item);
+ }
+ ~Object() {
+ reads.clear();
+ ceph_assert(ref == 0);
+ ceph_assert(data.empty());
+ ceph_assert(dirty_or_tx == 0);
+ set_item.remove_myself();
+ }
+
+ sobject_t get_soid() const { return oid; }
+ object_t get_oid() { return oid.oid; }
+ snapid_t get_snap() { return oid.snap; }
+ ObjectSet *get_object_set() const { return oset; }
+ std::string get_namespace() { return oloc.nspace; }
+ uint64_t get_object_number() const { return object_no; }
+
+ const object_locator_t& get_oloc() const { return oloc; }
+ void set_object_locator(object_locator_t& l) { oloc = l; }
+
+ bool can_close() const {
+ if (lru_is_expireable()) {
+ ceph_assert(data.empty());
+ ceph_assert(waitfor_commit.empty());
+ return true;
+ }
+ return false;
+ }
+
+ /**
+ * Check buffers and waiters for consistency
+ * - no overlapping buffers
+ * - index in map matches BH
+ * - waiters fall within BH
+ */
+ void audit_buffers();
+
+ /**
+ * find first buffer that includes or follows an offset
+ *
+ * @param offset object byte offset
+ * @return iterator pointing to buffer, or data.end()
+ */
+ std::map<loff_t,BufferHead*>::const_iterator data_lower_bound(loff_t offset) const {
+ auto p = data.lower_bound(offset);
+ if (p != data.begin() &&
+ (p == data.end() || p->first > offset)) {
+ --p; // might overlap!
+ if (p->first + p->second->length() <= offset)
+ ++p; // doesn't overlap.
+ }
+ return p;
+ }
+
+ // bh
+ // add to my map
+ void add_bh(BufferHead *bh) {
+ if (data.empty())
+ get();
+ ceph_assert(data.count(bh->start()) == 0);
+ data[bh->start()] = bh;
+ }
+ void remove_bh(BufferHead *bh) {
+ ceph_assert(data.count(bh->start()));
+ data.erase(bh->start());
+ if (data.empty())
+ put();
+ }
+
+ bool is_empty() const { return data.empty(); }
+
+ // mid-level
+ BufferHead *split(BufferHead *bh, loff_t off);
+ void merge_left(BufferHead *left, BufferHead *right);
+ bool can_merge_bh(BufferHead *left, BufferHead *right);
+ void try_merge_bh(BufferHead *bh);
+ void maybe_rebuild_buffer(BufferHead *bh);
+
+ bool is_cached(loff_t off, loff_t len) const;
+ bool include_all_cached_data(loff_t off, loff_t len);
+ int map_read(ObjectExtent &ex,
+ std::map<loff_t, BufferHead*>& hits,
+ std::map<loff_t, BufferHead*>& missing,
+ std::map<loff_t, BufferHead*>& rx,
+ std::map<loff_t, BufferHead*>& errors);
+ BufferHead *map_write(ObjectExtent &ex, ceph_tid_t tid);
+
+ void replace_journal_tid(BufferHead *bh, ceph_tid_t tid);
+ void truncate(loff_t s);
+ void discard(loff_t off, loff_t len, C_GatherBuilder* commit_gather);
+
+ // reference counting
+ int get() {
+ ceph_assert(ref >= 0);
+ if (ref == 0) lru_pin();
+ return ++ref;
+ }
+ int put() {
+ ceph_assert(ref > 0);
+ if (ref == 1) lru_unpin();
+ --ref;
+ return ref;
+ }
+ };
+
+
+ struct ObjectSet {
+ void *parent;
+
+ inodeno_t ino;
+ uint64_t truncate_seq, truncate_size;
+
+ int64_t poolid;
+ xlist<Object*> objects;
+
+ int dirty_or_tx;
+ bool return_enoent;
+
+ ObjectSet(void *p, int64_t _poolid, inodeno_t i)
+ : parent(p), ino(i), truncate_seq(0),
+ truncate_size(0), poolid(_poolid), dirty_or_tx(0),
+ return_enoent(false) {}
+
+ };
+
+
+ // ******* ObjectCacher *********
+ // ObjectCacher fields
+ private:
+ WritebackHandler& writeback_handler;
+ bool scattered_write;
+
+ std::string name;
+ ceph::mutex& lock;
+
+ uint64_t max_dirty, target_dirty, max_size, max_objects;
+ ceph::timespan max_dirty_age;
+ bool block_writes_upfront;
+
+ ZTracer::Endpoint trace_endpoint;
+
+ flush_set_callback_t flush_set_callback;
+ void *flush_set_callback_arg;
+
+ // indexed by pool_id
+ std::vector<ceph::unordered_map<sobject_t, Object*> > objects;
+
+ std::list<Context*> waitfor_read;
+
+ ceph_tid_t last_read_tid;
+
+ std::set<BufferHead*, BufferHead::ptr_lt> dirty_or_tx_bh;
+ LRU bh_lru_dirty, bh_lru_rest;
+ LRU ob_lru;
+
+ ceph::condition_variable flusher_cond;
+ bool flusher_stop;
+ void flusher_entry();
+ class FlusherThread : public Thread {
+ ObjectCacher *oc;
+ public:
+ explicit FlusherThread(ObjectCacher *o) : oc(o) {}
+ void *entry() override {
+ oc->flusher_entry();
+ return 0;
+ }
+ } flusher_thread;
+
+ Finisher finisher;
+
+ // objects
+ Object *get_object_maybe(sobject_t oid, object_locator_t &l) {
+ // have it?
+ if (((uint32_t)l.pool < objects.size()) &&
+ (objects[l.pool].count(oid)))
+ return objects[l.pool][oid];
+ return NULL;
+ }
+
+ Object *get_object(sobject_t oid, uint64_t object_no, ObjectSet *oset,
+ object_locator_t &l, uint64_t truncate_size,
+ uint64_t truncate_seq);
+ void close_object(Object *ob);
+
+ // bh stats
+ ceph::condition_variable stat_cond;
+
+ loff_t stat_clean;
+ loff_t stat_zero;
+ loff_t stat_dirty;
+ loff_t stat_rx;
+ loff_t stat_tx;
+ loff_t stat_missing;
+ loff_t stat_error;
+ loff_t stat_dirty_waiting; // bytes that writers are waiting on to write
+
+ size_t stat_nr_dirty_waiters;
+
+ void verify_stats() const;
+
+ void bh_stat_add(BufferHead *bh);
+ void bh_stat_sub(BufferHead *bh);
+ loff_t get_stat_tx() const { return stat_tx; }
+ loff_t get_stat_rx() const { return stat_rx; }
+ loff_t get_stat_dirty() const { return stat_dirty; }
+ loff_t get_stat_clean() const { return stat_clean; }
+ loff_t get_stat_zero() const { return stat_zero; }
+ loff_t get_stat_dirty_waiting() const { return stat_dirty_waiting; }
+ size_t get_stat_nr_dirty_waiters() const { return stat_nr_dirty_waiters; }
+
+ void touch_bh(BufferHead *bh) {
+ if (bh->is_dirty())
+ bh_lru_dirty.lru_touch(bh);
+ else
+ bh_lru_rest.lru_touch(bh);
+
+ bh->set_dontneed(false);
+ bh->set_nocache(false);
+ touch_ob(bh->ob);
+ }
+ void touch_ob(Object *ob) {
+ ob_lru.lru_touch(ob);
+ }
+ void bottouch_ob(Object *ob) {
+ ob_lru.lru_bottouch(ob);
+ }
+
+ // bh states
+ void bh_set_state(BufferHead *bh, int s);
+ void copy_bh_state(BufferHead *bh1, BufferHead *bh2) {
+ bh_set_state(bh2, bh1->get_state());
+ }
+
+ void mark_missing(BufferHead *bh) {
+ bh_set_state(bh,BufferHead::STATE_MISSING);
+ }
+ void mark_clean(BufferHead *bh) {
+ bh_set_state(bh, BufferHead::STATE_CLEAN);
+ }
+ void mark_zero(BufferHead *bh) {
+ bh_set_state(bh, BufferHead::STATE_ZERO);
+ }
+ void mark_rx(BufferHead *bh) {
+ bh_set_state(bh, BufferHead::STATE_RX);
+ }
+ void mark_tx(BufferHead *bh) {
+ bh_set_state(bh, BufferHead::STATE_TX); }
+ void mark_error(BufferHead *bh) {
+ bh_set_state(bh, BufferHead::STATE_ERROR);
+ }
+ void mark_dirty(BufferHead *bh) {
+ bh_set_state(bh, BufferHead::STATE_DIRTY);
+ bh_lru_dirty.lru_touch(bh);
+ //bh->set_dirty_stamp(ceph_clock_now());
+ }
+
+ void bh_add(Object *ob, BufferHead *bh);
+ void bh_remove(Object *ob, BufferHead *bh);
+
+ // io
+ void bh_read(BufferHead *bh, int op_flags,
+ const ZTracer::Trace &parent_trace);
+ void bh_write(BufferHead *bh, const ZTracer::Trace &parent_trace);
+ void bh_write_scattered(std::list<BufferHead*>& blist);
+ void bh_write_adjacencies(BufferHead *bh, ceph::real_time cutoff,
+ int64_t *amount, int *max_count);
+
+ void trim();
+ void flush(ZTracer::Trace *trace, loff_t amount=0);
+
+ /**
+ * flush a range of buffers
+ *
+ * Flush any buffers that intersect the specified extent. If len==0,
+ * flush *all* buffers for the object.
+ *
+ * @param o object
+ * @param off start offset
+ * @param len extent length, or 0 for entire object
+ * @return true if object was already clean/flushed.
+ */
+ bool flush(Object *o, loff_t off, loff_t len,
+ ZTracer::Trace *trace);
+ loff_t release(Object *o);
+ void purge(Object *o);
+
+ int64_t reads_outstanding;
+ ceph::condition_variable read_cond;
+
+ int _readx(OSDRead *rd, ObjectSet *oset, Context *onfinish,
+ bool external_call, ZTracer::Trace *trace);
+ void retry_waiting_reads();
+
+ public:
+ void bh_read_finish(int64_t poolid, sobject_t oid, ceph_tid_t tid,
+ loff_t offset, uint64_t length,
+ ceph::buffer::list &bl, int r,
+ bool trust_enoent);
+ void bh_write_commit(int64_t poolid, sobject_t oid,
+ std::vector<std::pair<loff_t, uint64_t> >& ranges,
+ ceph_tid_t t, int r);
+
+ class C_WriteCommit;
+ class C_WaitForWrite;
+
+ void perf_start();
+ void perf_stop();
+
+
+
+ ObjectCacher(CephContext *cct_, std::string name, WritebackHandler& wb, ceph::mutex& l,
+ flush_set_callback_t flush_callback,
+ void *flush_callback_arg,
+ uint64_t max_bytes, uint64_t max_objects,
+ uint64_t max_dirty, uint64_t target_dirty, double max_age,
+ bool block_writes_upfront);
+ ~ObjectCacher();
+
+ void start() {
+ flusher_thread.create("flusher");
+ }
+ void stop() {
+ ceph_assert(flusher_thread.is_started());
+ lock.lock(); // hmm.. watch out for deadlock!
+ flusher_stop = true;
+ flusher_cond.notify_all();
+ lock.unlock();
+ flusher_thread.join();
+ }
+
+
+ class C_RetryRead;
+
+
+ // non-blocking. async.
+
+ /**
+ * @note total read size must be <= INT_MAX, since
+ * the return value is total bytes read
+ */
+ int readx(OSDRead *rd, ObjectSet *oset, Context *onfinish,
+ ZTracer::Trace *parent_trace = nullptr);
+ int writex(OSDWrite *wr, ObjectSet *oset, Context *onfreespace,
+ ZTracer::Trace *parent_trace = nullptr);
+ bool is_cached(ObjectSet *oset, std::vector<ObjectExtent>& extents,
+ snapid_t snapid);
+
+private:
+ // write blocking
+ int _wait_for_write(OSDWrite *wr, uint64_t len, ObjectSet *oset,
+ ZTracer::Trace *trace, Context *onfreespace);
+ void _maybe_wait_for_writeback(uint64_t len, ZTracer::Trace *trace);
+ bool _flush_set_finish(C_GatherBuilder *gather, Context *onfinish);
+
+ void _discard(ObjectSet *oset, const std::vector<ObjectExtent>& exls,
+ C_GatherBuilder* gather);
+ void _discard_finish(ObjectSet *oset, bool was_dirty, Context* on_finish);
+
+public:
+ bool set_is_empty(ObjectSet *oset);
+ bool set_is_cached(ObjectSet *oset);
+ bool set_is_dirty_or_committing(ObjectSet *oset);
+
+ bool flush_set(ObjectSet *oset, Context *onfinish=0);
+ bool flush_set(ObjectSet *oset, std::vector<ObjectExtent>& ex,
+ ZTracer::Trace *trace, Context *onfinish = 0);
+ bool flush_all(Context *onfinish = 0);
+
+ void purge_set(ObjectSet *oset);
+
+ // returns # of bytes not released (ie non-clean)
+ loff_t release_set(ObjectSet *oset);
+ uint64_t release_all();
+
+ void discard_set(ObjectSet *oset, const std::vector<ObjectExtent>& ex);
+ void discard_writeback(ObjectSet *oset, const std::vector<ObjectExtent>& ex,
+ Context* on_finish);
+
+ /**
+ * Retry any in-flight reads that get -ENOENT instead of marking
+ * them zero, and get rid of any cached -ENOENTs.
+ * After this is called and the cache's lock is unlocked,
+ * any new requests will treat -ENOENT normally.
+ */
+ void clear_nonexistence(ObjectSet *oset);
+
+
+ // cache sizes
+ void set_max_dirty(uint64_t v) {
+ max_dirty = v;
+ }
+ void set_target_dirty(int64_t v) {
+ target_dirty = v;
+ }
+ void set_max_size(int64_t v) {
+ max_size = v;
+ }
+ void set_max_dirty_age(double a) {
+ max_dirty_age = ceph::make_timespan(a);
+ }
+ void set_max_objects(int64_t v) {
+ max_objects = v;
+ }
+
+
+ // file functions
+
+ /*** async+caching (non-blocking) file interface ***/
+ int file_is_cached(ObjectSet *oset, file_layout_t *layout,
+ snapid_t snapid, loff_t offset, uint64_t len) {
+ std::vector<ObjectExtent> extents;
+ Striper::file_to_extents(cct, oset->ino, layout, offset, len,
+ oset->truncate_size, extents);
+ return is_cached(oset, extents, snapid);
+ }
+
+ int file_read(ObjectSet *oset, file_layout_t *layout, snapid_t snapid,
+ loff_t offset, uint64_t len, ceph::buffer::list *bl, int flags,
+ Context *onfinish) {
+ OSDRead *rd = prepare_read(snapid, bl, flags);
+ Striper::file_to_extents(cct, oset->ino, layout, offset, len,
+ oset->truncate_size, rd->extents);
+ return readx(rd, oset, onfinish);
+ }
+
+ int file_write(ObjectSet *oset, file_layout_t *layout,
+ const SnapContext& snapc, loff_t offset, uint64_t len,
+ ceph::buffer::list& bl, ceph::real_time mtime, int flags) {
+ OSDWrite *wr = prepare_write(snapc, bl, mtime, flags, 0);
+ Striper::file_to_extents(cct, oset->ino, layout, offset, len,
+ oset->truncate_size, wr->extents);
+ return writex(wr, oset, nullptr);
+ }
+
+ bool file_flush(ObjectSet *oset, file_layout_t *layout,
+ const SnapContext& snapc, loff_t offset, uint64_t len,
+ Context *onfinish) {
+ std::vector<ObjectExtent> extents;
+ Striper::file_to_extents(cct, oset->ino, layout, offset, len,
+ oset->truncate_size, extents);
+ ZTracer::Trace trace;
+ return flush_set(oset, extents, &trace, onfinish);
+ }
+};
+
+
+inline std::ostream& operator<<(std::ostream &out,
+ const ObjectCacher::BufferHead &bh)
+{
+ out << "bh[ " << &bh << " "
+ << bh.start() << "~" << bh.length()
+ << " " << bh.ob
+ << " (" << bh.bl.length() << ")"
+ << " v " << bh.last_write_tid;
+ if (bh.get_journal_tid() != 0) {
+ out << " j " << bh.get_journal_tid();
+ }
+ if (bh.is_tx()) out << " tx";
+ if (bh.is_rx()) out << " rx";
+ if (bh.is_dirty()) out << " dirty";
+ if (bh.is_clean()) out << " clean";
+ if (bh.is_zero()) out << " zero";
+ if (bh.is_missing()) out << " missing";
+ if (bh.bl.length() > 0) out << " firstbyte=" << (int)bh.bl[0];
+ if (bh.error) out << " error=" << bh.error;
+ out << "]";
+ out << " waiters = {";
+ for (auto it = bh.waitfor_read.begin(); it != bh.waitfor_read.end(); ++it) {
+ out << " " << it->first << "->[";
+ for (auto lit = it->second.begin();
+ lit != it->second.end(); ++lit) {
+ out << *lit << ", ";
+ }
+ out << "]";
+ }
+ out << "}";
+ return out;
+}
+
+inline std::ostream& operator<<(std::ostream &out,
+ const ObjectCacher::ObjectSet &os)
+{
+ return out << "objectset[" << os.ino
+ << " ts " << os.truncate_seq << "/" << os.truncate_size
+ << " objects " << os.objects.size()
+ << " dirty_or_tx " << os.dirty_or_tx
+ << "]";
+}
+
+inline std::ostream& operator<<(std::ostream &out,
+ const ObjectCacher::Object &ob)
+{
+ out << "object["
+ << ob.get_soid() << " oset " << ob.oset << std::dec
+ << " wr " << ob.last_write_tid << "/" << ob.last_commit_tid;
+
+ if (ob.complete)
+ out << " COMPLETE";
+ if (!ob.exists)
+ out << " !EXISTS";
+
+ out << "]";
+ return out;
+}
+
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-11 10:50:25 +0000