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ruanhaishen
redis
Commits
4ee9488d
Commit
4ee9488d
authored
Jan 13, 2010
by
antirez
Browse files
Wait zero active threads condition before to fork() for BGSAVE or BGREWRITEAOF
parent
c7df85a4
Changes
1
Show whitespace changes
Inline
Side-by-side
redis.c
View file @
4ee9488d
...
@@ -561,6 +561,7 @@ static void freeIOJob(iojob *j);
...
@@ -561,6 +561,7 @@ static void freeIOJob(iojob *j);
static
void
queueIOJob
(
iojob
*
j
);
static
void
queueIOJob
(
iojob
*
j
);
static
int
vmWriteObjectOnSwap
(
robj
*
o
,
off_t
page
);
static
int
vmWriteObjectOnSwap
(
robj
*
o
,
off_t
page
);
static
robj
*
vmReadObjectFromSwap
(
off_t
page
,
int
type
);
static
robj
*
vmReadObjectFromSwap
(
off_t
page
,
int
type
);
static
void
waitZeroActiveThreads
(
void
);
static
void
authCommand
(
redisClient
*
c
);
static
void
authCommand
(
redisClient
*
c
);
static
void
pingCommand
(
redisClient
*
c
);
static
void
pingCommand
(
redisClient
*
c
);
...
@@ -3085,6 +3086,7 @@ static int rdbSaveBackground(char *filename) {
...
@@ -3085,6 +3086,7 @@ static int rdbSaveBackground(char *filename) {
pid_t
childpid
;
pid_t
childpid
;
if
(
server
.
bgsavechildpid
!=
-
1
)
return
REDIS_ERR
;
if
(
server
.
bgsavechildpid
!=
-
1
)
return
REDIS_ERR
;
if
(
server
.
vm_enabled
)
waitZeroActiveThreads
();
if
((
childpid
=
fork
())
==
0
)
{
if
((
childpid
=
fork
())
==
0
)
{
/* Child */
/* Child */
close
(
server
.
fd
);
close
(
server
.
fd
);
...
@@ -6906,6 +6908,7 @@ static int rewriteAppendOnlyFileBackground(void) {
...
@@ -6906,6 +6908,7 @@ static int rewriteAppendOnlyFileBackground(void) {
pid_t
childpid
;
pid_t
childpid
;
if
(
server
.
bgrewritechildpid
!=
-
1
)
return
REDIS_ERR
;
if
(
server
.
bgrewritechildpid
!=
-
1
)
return
REDIS_ERR
;
if
(
server
.
vm_enabled
)
waitZeroActiveThreads
();
if
((
childpid
=
fork
())
==
0
)
{
if
((
childpid
=
fork
())
==
0
)
{
/* Child */
/* Child */
char
tmpfile
[
256
];
char
tmpfile
[
256
];
...
@@ -7669,6 +7672,20 @@ static void spawnIOThread(void) {
...
@@ -7669,6 +7672,20 @@ static void spawnIOThread(void) {
server
.
io_active_threads
++
;
server
.
io_active_threads
++
;
}
}
/* We need to wait for the last thread to exit before we are able to
* fork() in order to BGSAVE or BGREWRITEAOF. */
static
void
waitZeroActiveThreads
(
void
)
{
while
(
1
)
{
lockThreadedIO
();
if
(
server
.
io_active_threads
==
0
)
{
unlockThreadedIO
();
return
;
}
unlockThreadedIO
();
usleep
(
10000
);
/* 10 milliseconds */
}
}
/* This function must be called while with threaded IO locked */
/* This function must be called while with threaded IO locked */
static
void
queueIOJob
(
iojob
*
j
)
{
static
void
queueIOJob
(
iojob
*
j
)
{
redisLog
(
REDIS_DEBUG
,
"Queued IO Job %p type %d about key '%s'
\n
"
,
redisLog
(
REDIS_DEBUG
,
"Queued IO Job %p type %d about key '%s'
\n
"
,
...
...
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