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33388d43
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33388d43
编写于
12月 28, 2010
作者:
A
antirez
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
added diskstore.c in Makefile and prototypes in redis.h
上级
52970711
变更
3
隐藏空白更改
内联
并排
Showing
3 changed file
with
87 addition
and
10 deletion
+87
-10
src/Makefile
src/Makefile
+12
-9
src/dscache.c
src/dscache.c
+67
-0
src/redis.h
src/redis.h
+8
-1
未找到文件。
src/Makefile
浏览文件 @
33388d43
...
...
@@ -24,7 +24,7 @@ PREFIX= /usr/local
INSTALL_BIN
=
$(PREFIX)
/bin
INSTALL
=
cp
-p
OBJ
=
adlist.o ae.o anet.o dict.o redis.o sds.o zmalloc.o lzf_c.o lzf_d.o pqsort.o zipmap.o sha1.o ziplist.o release.o networking.o util.o object.o db.o replication.o rdb.o t_string.o t_list.o t_set.o t_zset.o t_hash.o config.o aof.o
vm.o pubsub.o multi.o debug.o sort.o intset.o syncio
.o
OBJ
=
adlist.o ae.o anet.o dict.o redis.o sds.o zmalloc.o lzf_c.o lzf_d.o pqsort.o zipmap.o sha1.o ziplist.o release.o networking.o util.o object.o db.o replication.o rdb.o t_string.o t_list.o t_set.o t_zset.o t_hash.o config.o aof.o
dscache.o pubsub.o multi.o debug.o sort.o intset.o syncio.o diskstore
.o
BENCHOBJ
=
ae.o anet.o redis-benchmark.o sds.o adlist.o zmalloc.o
CLIOBJ
=
anet.o sds.o adlist.o redis-cli.o zmalloc.o release.o
CHECKDUMPOBJ
=
redis-check-dump.o lzf_c.o lzf_d.o
...
...
@@ -50,7 +50,6 @@ ae_select.o: ae_select.c
anet.o
:
anet.c fmacros.h anet.h
aof.o
:
aof.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h
\
zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h
chprgname.o
:
chprgname.c
config.o
:
config.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h
\
zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h
db.o
:
db.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h
\
...
...
@@ -58,6 +57,10 @@ db.o: db.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h \
debug.o
:
debug.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h
\
zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h sha1.h
dict.o
:
dict.c fmacros.h dict.h zmalloc.h
diskstore.o
:
diskstore.c redis.h fmacros.h config.h ae.h sds.h dict.h
\
adlist.h zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h
dscache.o
:
dscache.c redis.h fmacros.h config.h ae.h sds.h dict.h
\
adlist.h zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h
intset.o
:
intset.c intset.h zmalloc.h
lzf_c.o
:
lzf_c.c lzfP.h
lzf_d.o
:
lzf_d.c lzfP.h
...
...
@@ -72,11 +75,12 @@ pubsub.o: pubsub.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h \
zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h
rdb.o
:
rdb.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h
\
zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h lzf.h
redis-benchmark.o
:
redis-benchmark.c fmacros.h ae.h
anet.h sds.h adlist.h
\
zmalloc.h
redis-benchmark.o
:
redis-benchmark.c fmacros.h ae.h
\
../deps/hiredis/hiredis.h sds.h adlist.h
zmalloc.h
redis-check-aof.o
:
redis-check-aof.c fmacros.h config.h
redis-check-dump.o
:
redis-check-dump.c lzf.h
redis-cli.o
:
redis-cli.c fmacros.h version.h sds.h adlist.h zmalloc.h
redis-cli.o
:
redis-cli.c fmacros.h version.h ../deps/hiredis/hiredis.h
\
sds.h zmalloc.h ../deps/linenoise/linenoise.h help.h
redis.o
:
redis.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h
\
zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h
release.o
:
release.c release.h
...
...
@@ -86,7 +90,8 @@ sds.o: sds.c sds.h zmalloc.h
sha1.o
:
sha1.c sha1.h
sort.o
:
sort.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h
\
zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h pqsort.h
syncio.o
:
syncio.c
syncio.o
:
syncio.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h
\
zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h
t_hash.o
:
t_hash.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h
\
zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h
t_list.o
:
t_list.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h
\
...
...
@@ -99,8 +104,6 @@ t_zset.o: t_zset.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h \
zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h
util.o
:
util.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h
\
zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h
vm.o
:
vm.c redis.h fmacros.h config.h ae.h sds.h dict.h adlist.h
\
zmalloc.h anet.h zipmap.h ziplist.h intset.h version.h
ziplist.o
:
ziplist.c zmalloc.h ziplist.h
zipmap.o
:
zipmap.c zmalloc.h
zmalloc.o
:
zmalloc.c config.h
...
...
@@ -138,7 +141,7 @@ clean:
rm
-rf
$(PRGNAME)
$(BENCHPRGNAME)
$(CLIPRGNAME)
$(CHECKDUMPPRGNAME)
$(CHECKAOFPRGNAME)
*
.o
*
.gcda
*
.gcno
*
.gcov
dep
:
$(CC)
-MM
*
.c
$(CC)
-MM
*
.c
-I
../deps/hiredis
-I
../deps/linenoise
test
:
redis-server
(
cd
..
;
tclsh8.5 tests/test_helper.tcl
--tags
"
${TAGS}
"
--file
"
${FILE}
"
)
...
...
src/
vm
.c
→
src/
dscache
.c
浏览文件 @
33388d43
...
...
@@ -5,6 +5,73 @@
#include <math.h>
#include <signal.h>
/* dscache.c - Disk store cache for disk store backend.
*
* When Redis is configured for using disk as backend instead of memory, the
* memory is used as a cache, so that recently accessed keys are taken in
* memory for fast read and write operations.
*
* Modified keys are marked to be flushed on disk, and will be flushed
* as long as the maxium configured flush time elapsed.
*
* This file implements the whole caching subsystem and contains further
* documentation. */
/* TODO:
*
* - The WATCH helper will be used to signal the cache system
* we need to flush a given key/dbid into disk, adding this key/dbid
* pair into a server.ds_cache_dirty linked list AND hash table (so that we
* don't add the same thing multiple times).
*
* - cron() checks if there are elements on this list. When there are things
* to flush, we create an IO Job for the I/O thread.
* FIXME: how to mark this key as "busy"? With VM we used to change the
* object->storage field, but this time we need this to work with every
* kind of object, including shared ones. One possibility is just killing
* object sharing at all. So let's assume this will be our solution.
*
* So we set keys that are in the process of being saved as
* object->storage = REDIS_STORAGE_SAVING;
*
* - This is what we do on key lookup:
* 1) The key already exists in memory. object->storage == REDIS_DS_MEMORY.
* We don't do nothing special, lookup, return value object pointer.
* 2) The key is in memory but object->storage == REDIS_DS_SAVING.
* This is an explicit lookup so we have to abort the saving operation.
* We kill the IO Job, set the storage to == REDIS_DB_MEMORY but
* re-queue the object in the server.ds_cache_dirty list.
*
* Btw here we need some protection against the problem of continuously
* writing against a value having the effect of this value to be never
* saved on disk. That is, at some point we need to block and write it
* if there is too much delay.
* 3) The key is not in memory. We block to load the key from disk.
* Of course the key may not be present at all on the disk store as well,
* in such case we just detect this condition and continue, returning
* NULL from lookup.
*
* - Preloading of needed keys:
* 1) As it was done with VM, also with this new system we try preloading
* keys a client is going to use. We block the client, load keys
* using the I/O thread, unblock the client. Same code as VM more or less.
*
* - Transfering keys from memory to disk.
* Again while in cron() we detect our memory limit was reached. What we
* do is transfering random keys that are not set as dirty on disk, using
* LRU to select the key.
* If this is not enough to return again under the memory limits we also
* start to flush keys that need to be synched on disk synchronously,
* removing it from the memory.
*
* - IO thread operations are no longer stopped for sync loading/saving of
* things. When a key is found to be in the process of being saved or
* loaded we simply wait for the IO thread to end its work.
*
* Otherwise if there is to load a key without any IO thread operation
* just started it is blocking-loaded in the lookup function.
*/
/* Virtual Memory is composed mainly of two subsystems:
* - Blocking Virutal Memory
* - Threaded Virtual Memory I/O
...
...
src/redis.h
浏览文件 @
33388d43
...
...
@@ -792,7 +792,14 @@ int htNeedsResize(dict *dict);
void
oom
(
const
char
*
msg
);
void
populateCommandTable
(
void
);
/* Virtual Memory */
/* Disk store */
int
dsOpen
(
void
);
int
dsClose
(
void
);
int
dsSet
(
redisDb
*
db
,
robj
*
key
,
robj
*
val
);
robj
*
dsGet
(
redisDb
*
db
,
robj
*
key
);
int
dsExists
(
redisDb
*
db
,
robj
*
key
);
/* Disk Store Cache */
void
vmInit
(
void
);
void
vmMarkPagesFree
(
off_t
page
,
off_t
count
);
robj
*
vmLoadObject
(
robj
*
o
);
...
...
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