commit b1842617f7700c56d3eede8ce6c5afdacf433fca
Author: Oswald Buddenhagen <[email protected]>
Date: Sat Nov 30 13:03:12 2013 +0100
make MaxMessages work for new mails as well
this helps enormously on the first sync of a 100k message box with a
limit of 1k messages. it also happens to make the syncing idempotent.
in a few conditionals we now explicitly test for max_messages being
enabled, not smaxxuid != 0, as after the initial fetch with no important
messages smaxxuid is zero, but we still have to skip over 99k messages
in the above case.
src/run-tests.pl | 24 +++-------
src/sync.c | 109 +++++++++++++++++++++++++++++++++++++---------
2 files changed, 95 insertions(+), 38 deletions(-)
diff --git a/src/run-tests.pl b/src/run-tests.pl
index 42cd4b1..7210cb3 100755
--- a/src/run-tests.pl
+++ b/src/run-tests.pl
@@ -174,7 +174,7 @@ test("slave max size", \@X11, \@X22, @O22);
my @x30 = (
[ 0,
- 1, 0, "F", 2, 0, "S", 3, 0, "S", 4, 0, "", 5, 0, "" ],
+ 1, 0, "F", 2, 0, "", 3, 0, "S", 4, 0, "", 5, 0, "S", 6, 0, "" ],
[ 0,
],
[ 0, 0, 0,
@@ -184,26 +184,16 @@ my @x30 = (
my @O31 = ("", "", "MaxMessages 3\n");
#show("30", "31", "31");
my @X31 = (
+ [ 6,
+ 1, 1, "F", 2, 2, "", 3, 3, "S", 4, 4, "", 5, 5, "S", 6, 6, "" ],
[ 5,
- 1, 1, "F", 2, 2, "S", 3, 3, "S", 4, 4, "", 5, 5, "" ],
- [ 5,
- 1, 1, "F", 2, 2, "S", 3, 3, "S", 4, 4, "", 5, 5, "" ],
- [ 5, 0, 0,
- 1, 1, "F", 2, 2, "S", 3, 3, "S", 4, 4, "", 5, 5, "" ],
+ 1, 1, "F", 2, 2, "", 4, 3, "", 5, 4, "S", 6, 5, "" ],
+ [ 6, 2, 0,
+ 1, 1, "F", 2, 2, "", 4, 3, "", 5, 4, "S", 6, 5, "" ],
);
test("max messages", \@x30, \@X31, @O31);
-my @O41 = ("", "", "MaxMessages 3\nExpunge Both\n");
-#show("40", "41", "41");
-my @X41 = (
- [ 5,
- 1, 1, "F", 2, 2, "S", 3, 3, "S", 4, 4, "", 5, 5, "" ],
- [ 5,
- 1, 1, "F", 3, 3, "S", 4, 4, "", 5, 5, "" ],
- [ 5, 2, 0,
- 1, 1, "F", 3, 3, "S", 4, 4, "", 5, 5, "" ],
-);
-test("max messages catch-up", \@X31, \@X41, @O41);
+test("max messages verification", \@X31, \@X31, @O31);
my @x50 = (
[ 6,
diff --git a/src/sync.c b/src/sync.c
index 24a3bb6..4cbee88 100644
--- a/src/sync.c
+++ b/src/sync.c
@@ -155,8 +155,10 @@ typedef struct {
int flags_total[2], flags_done[2];
int trash_total[2], trash_done[2];
int maxuid[2]; /* highest UID that was already propagated */
+ int newmaxuid[2]; /* highest UID that is currently being propagated */
int uidval[2]; /* UID validity value */
int newuid[2]; /* TUID lookup makes sense only for UIDs >= this */
+ int mmaxxuid; /* highest expired UID on master during new message
propagation */
int smaxxuid; /* highest expired UID on slave */
} sync_vars_t;
@@ -806,6 +808,9 @@ box_selected( int sts, void *aux )
goto bail;
}
}
+ svars->newmaxuid[M] = svars->maxuid[M];
+ svars->newmaxuid[S] = svars->maxuid[S];
+ svars->mmaxxuid = INT_MAX;
line = 0;
if ((jfp = fopen( svars->jname, "r" ))) {
if (!stat( svars->nname, &st ) && fgets( buf, sizeof(buf), jfp
)) {
@@ -829,7 +834,7 @@ box_selected( int sts, void *aux )
}
if (buf[0] == '#' ?
(t3 = 0, (sscanf( buf + 2, "%d %d %n",
&t1, &t2, &t3 ) < 2) || !t3 || (t - t3 != TUIDL + 3)) :
- buf[0] == '(' || buf[0] == ')' || buf[0]
== '{' || buf[0] == '}' ?
+ buf[0] == '(' || buf[0] == ')' || buf[0]
== '{' || buf[0] == '}' || buf[0] == '!' ?
(sscanf( buf + 2, "%d", &t1 ) != 1) :
buf[0] == '+' || buf[0] == '&' ||
buf[0] == '-' || buf[0] == '|' || buf[0] == '/' || buf[0] == '\\' ?
(sscanf( buf + 2, "%d %d", &t1, &t2 )
!= 2) :
@@ -846,6 +851,8 @@ box_selected( int sts, void *aux )
svars->newuid[M] = t1;
else if (buf[0] == '}')
svars->newuid[S] = t1;
+ else if (buf[0] == '!')
+ svars->smaxxuid = t1;
else if (buf[0] == '|') {
svars->uidval[M] = t1;
svars->uidval[S] = t2;
@@ -853,6 +860,10 @@ box_selected( int sts, void *aux )
srec = nfmalloc( sizeof(*srec) );
srec->uid[M] = t1;
srec->uid[S] = t2;
+ if (svars->newmaxuid[M] < t1)
+ svars->newmaxuid[M] = t1;
+ if (svars->newmaxuid[S] < t2)
+ svars->newmaxuid[S] = t2;
debug( " new entry(%d,%d)\n", t1, t2 );
srec->msg[M] = srec->msg[S] = 0;
srec->status = 0;
@@ -876,6 +887,8 @@ box_selected( int sts, void *aux )
switch (buf[0]) {
case '-':
debug( "killed\n" );
+ if (srec->msg[M])
+ srec->msg[M]->srec = 0;
srec->status = S_DEAD;
break;
case '#':
@@ -1014,7 +1027,7 @@ box_selected( int sts, void *aux )
mexcs = 0;
nmexcs = rmexcs = 0;
if (svars->ctx[M]->opts & OPEN_OLD) {
- if (svars->smaxxuid) {
+ if (chan->max_messages) {
/* When messages have been expired on the slave, the
master fetch is split into
* two ranges: The bulk fetch which corresponds with
the most recent messages, and an
* exception list of messages which would have been
expired if they weren't important. */
@@ -1198,10 +1211,14 @@ box_loaded( int sts, void *aux )
* - message is old (> 0) or expired (0) => ignore
* - message was skipped (-1) => ReNew
* - message was attempted, but failed (-2) => New
- * If new have no srec, the message is always New. */
+ * If new have no srec, the message is always New. If
messages were previously ignored
+ * due to being excessive, they would now appear to be
newer than the messages that
+ * got actually synced, so make sure to look only at
the newest ones. As some messages
+ * may be already propagated before an interruption,
and maxuid logging is delayed,
+ * we need to track the newmaxuid separately. */
srec = tmsg->srec;
if (srec ? srec->uid[t] < 0 && (svars->chan->ops[t] &
(srec->uid[t] == -1 ? OP_RENEW : OP_NEW))
- : (svars->chan->ops[t] & OP_NEW)) {
+ : svars->newmaxuid[1-t] < tmsg->uid &&
(svars->chan->ops[t] & OP_NEW)) {
debug( "new message %d on %s\n", tmsg->uid,
str_ms[1-t] );
if ((svars->chan->ops[t] & OP_EXPUNGE) &&
(tmsg->flags & F_DELETED))
debug( " -> not %sing - would be
expunged anyway\n", str_hl[t] );
@@ -1220,7 +1237,11 @@ box_loaded( int sts, void *aux )
srec->tuid[0] = 0;
srec->uid[1-t] = tmsg->uid;
srec->uid[t] = -2;
+ srec->msg[1-t] = tmsg;
+ srec->msg[t] = 0;
tmsg->srec = srec;
+ if (svars->newmaxuid[1-t] <
tmsg->uid)
+ svars->newmaxuid[1-t] =
tmsg->uid;
Fprintf( svars->jfp, "+ %d
%d\n", srec->uid[M], srec->uid[S] );
debug( " -> pair(%d,%d)
created\n", srec->uid[M], srec->uid[S] );
}
@@ -1346,6 +1367,10 @@ box_loaded( int sts, void *aux )
alive++;
}
}
+ for (tmsg = svars->ctx[M]->msgs; tmsg; tmsg = tmsg->next) {
+ if ((srec = tmsg->srec) && srec->tuid[0] &&
!(tmsg->flags & F_DELETED))
+ alive++;
+ }
todel = alive - svars->chan->max_messages;
debug( "%d alive messages, %d excess - expiring\n", alive,
todel );
for (tmsg = svars->ctx[S]->msgs; tmsg; tmsg = tmsg->next) {
@@ -1353,6 +1378,7 @@ box_loaded( int sts, void *aux )
continue;
if (!(srec = tmsg->srec) || srec->uid[M] <= 0) {
/* We did not push the message, so it must be
kept. */
+ debug( " old pair(%d,%d) unpropagated\n",
srec->uid[M], srec->uid[S] );
todel--;
} else {
nflags = (tmsg->flags | srec->aflags[S]) &
~srec->dflags[S];
@@ -1360,13 +1386,32 @@ box_loaded( int sts, void *aux )
/* The message is not deleted, or is
already (being) expired. */
if ((nflags & F_FLAGGED) || !(nflags &
F_SEEN)) {
/* Important messages are
always kept. */
+ debug( " old pair(%d,%d)
important\n", srec->uid[M], srec->uid[S] );
todel--;
} else if (todel > 0 ||
((srec->status &
(S_EXPIRE|S_EXPIRED)) == (S_EXPIRE|S_EXPIRED)) ||
((srec->status &
(S_EXPIRE|S_EXPIRED)) && (tmsg->flags & F_DELETED))) {
/* The message is excess or was
already (being) expired. */
srec->status |= S_NEXPIRE;
- debug( " pair(%d,%d)\n",
srec->uid[M], srec->uid[S] );
+ debug( " old pair(%d,%d)
expired\n", srec->uid[M], srec->uid[S] );
+ todel--;
+ }
+ }
+ }
+ }
+ for (tmsg = svars->ctx[M]->msgs; tmsg; tmsg = tmsg->next) {
+ if ((srec = tmsg->srec) && srec->tuid[0]) {
+ nflags = tmsg->flags;
+ if (!(nflags & F_DELETED)) {
+ if ((nflags & F_FLAGGED) || !(nflags &
F_SEEN)) {
+ /* Important messages are
always fetched. */
+ debug( " new pair(%d,%d)
important\n", srec->uid[M], srec->uid[S] );
+ todel--;
+ } else if (todel > 0) {
+ /* The message is excess. */
+ srec->status |= S_NEXPIRE;
+ debug( " new pair(%d,%d)
expired\n", srec->uid[M], srec->uid[S] );
+ svars->mmaxxuid = srec->uid[M];
todel--;
}
}
@@ -1374,23 +1419,34 @@ box_loaded( int sts, void *aux )
}
debug( "%d excess messages remain\n", todel );
for (srec = svars->srecs; srec; srec = srec->next) {
- if ((srec->status & (S_DEAD|S_DONE)) || !srec->msg[S])
+ if (srec->status & S_DEAD)
continue;
- nex = (srec->status / S_NEXPIRE) & 1;
- if (nex != ((srec->status / S_EXPIRED) & 1)) {
- /* The record needs a state change ... */
- if (nex != ((srec->status / S_EXPIRE) & 1)) {
- /* ... and we need to start a
transaction. */
- Fprintf( svars->jfp, "~ %d %d %d\n",
srec->uid[M], srec->uid[S], nex );
- debug( " pair(%d,%d): %d (pre)\n",
srec->uid[M], srec->uid[S], nex );
- srec->status = (srec->status &
~S_EXPIRE) | (nex * S_EXPIRE);
+ if (!srec->tuid[0]) {
+ if (!srec->msg[S])
+ continue;
+ nex = (srec->status / S_NEXPIRE) & 1;
+ if (nex != ((srec->status / S_EXPIRED) & 1)) {
+ /* The record needs a state change ...
*/
+ if (nex != ((srec->status / S_EXPIRE) &
1)) {
+ /* ... and we need to start a
transaction. */
+ Fprintf( svars->jfp, "~ %d %d
%d\n", srec->uid[M], srec->uid[S], nex );
+ debug( " pair(%d,%d): %d
(pre)\n", srec->uid[M], srec->uid[S], nex );
+ srec->status = (srec->status &
~S_EXPIRE) | (nex * S_EXPIRE);
+ } else {
+ /* ... but the "right"
transaction is already pending. */
+ debug( " pair(%d,%d): %d
(pending)\n", srec->uid[M], srec->uid[S], nex );
+ }
} else {
- /* ... but the "right" transaction is
already pending. */
- debug( " pair(%d,%d): %d (pending)\n",
srec->uid[M], srec->uid[S], nex );
+ /* Note: the "wrong" transaction may be
pending here,
+ * e.g.: S_NEXPIRE = 0, S_EXPIRE = 1,
S_EXPIRED = 0. */
}
} else {
- /* Note: the "wrong" transaction may be pending
here,
- * e.g.: S_NEXPIRE = 0, S_EXPIRE = 1, S_EXPIRED
= 0. */
+ if (srec->status & S_NEXPIRE) {
+ Fprintf( svars->jfp, "- %d %d\n",
srec->uid[M], srec->uid[S] );
+ debug( " pair(%d,%d): 1 (abort)\n",
srec->uid[M], srec->uid[S] );
+ srec->msg[M]->srec = 0;
+ srec->status = S_DEAD;
+ }
}
}
}
@@ -1515,6 +1571,16 @@ msg_copied_p2( sync_vars_t *svars, sync_rec_t *srec, int
t, int uid )
srec->uid[t] = uid;
srec->tuid[0] = 0;
}
+ if (t == S && svars->mmaxxuid < srec->uid[M]) {
+ /* If we have so many new messages that some of them are
instantly expired,
+ * but some are still propagated because they are important, we
need to
+ * ensure explicitly that the bulk fetch limit is upped. */
+ svars->mmaxxuid = INT_MAX;
+ if (svars->smaxxuid < srec->uid[S] - 1) {
+ svars->smaxxuid = srec->uid[S] - 1;
+ Fprintf( svars->jfp, "! %d\n", svars->smaxxuid );
+ }
+ }
}
static void msgs_found_new( int sts, void *aux );
@@ -1735,13 +1801,14 @@ box_closed_p2( sync_vars_t *svars, int t )
if (!(svars->state[1-t] & ST_CLOSED))
return;
- if (((svars->state[M] | svars->state[S]) & ST_DID_EXPUNGE) ||
svars->smaxxuid) {
+ if (((svars->state[M] | svars->state[S]) & ST_DID_EXPUNGE) ||
svars->chan->max_messages) {
/* This cleanup is not strictly necessary, as the next full sync
would throw out the dead entries anyway. But ... */
+ debug( "purging obsolete entries\n" );
minwuid = INT_MAX;
- if (svars->smaxxuid) {
- debug( "preparing entry purge - max expired slave uid
is %d\n", svars->smaxxuid );
+ if (svars->chan->max_messages) {
+ debug( " max expired slave uid is %d\n",
svars->smaxxuid );
for (srec = svars->srecs; srec; srec = srec->next) {
if (srec->status & S_DEAD)
continue;
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