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Add 3 second timeout when terminating server and sending print notify

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messages. Stops build-up of large numbers of smbd's waiting to terminate
on large print throughput.
Jeremy.
(This used to be commit 07efebb984)
This commit is contained in:
Jeremy Allison
2003-01-30 23:55:58 +00:00
parent 920287bf6b
commit bbf9f09ee5
6 changed files with 65 additions and 16 deletions
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50
source3/lib/messages.c
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@ -160,8 +160,8 @@ static BOOL message_notify(pid_t pid)
Send a message to a particular pid.
****************************************************************************/
BOOL message_send_pid(pid_t pid, int msg_type, const void *buf, size_t len,
BOOL duplicates_allowed)
static BOOL message_send_pid_internal(pid_t pid, int msg_type, const void *buf, size_t len,
BOOL duplicates_allowed, unsigned int timeout)
{
TDB_DATA kbuf;
TDB_DATA dbuf;
@ -200,7 +200,17 @@ BOOL message_send_pid(pid_t pid, int msg_type, const void *buf, size_t len,
/* If duplicates are allowed we can just append the message and return. */
/* lock the record for the destination */
tdb_chainlock(tdb, kbuf);
if (timeout) {
if (tdb_chainlock_with_timeout(tdb, kbuf, timeout) == -1) {
DEBUG(0,("message_send_pid_internal: failed to get chainlock with timeout %ul.\n", timeout));
return False;
}
} else {
if (tdb_chainlock(tdb, kbuf) == -1) {
DEBUG(0,("message_send_pid_internal: failed to get chainlock.\n"));
return False;
}
}
tdb_append(tdb, kbuf, dbuf);
tdb_chainunlock(tdb, kbuf);
@ -210,7 +220,18 @@ BOOL message_send_pid(pid_t pid, int msg_type, const void *buf, size_t len,
}
/* lock the record for the destination */
tdb_chainlock(tdb, kbuf);
if (timeout) {
if (tdb_chainlock_with_timeout(tdb, kbuf, timeout) == -1) {
DEBUG(0,("message_send_pid_internal: failed to get chainlock with timeout %ul.\n", timeout));
return False;
}
} else {
if (tdb_chainlock(tdb, kbuf) == -1) {
DEBUG(0,("message_send_pid_internal: failed to get chainlock.\n"));
return False;
}
}
old_dbuf = tdb_fetch(tdb, kbuf);
if (!old_dbuf.dptr) {
@ -236,7 +257,7 @@ BOOL message_send_pid(pid_t pid, int msg_type, const void *buf, size_t len,
if (!memcmp(ptr, &rec, sizeof(rec))) {
if (!len || (len && !memcmp( ptr + sizeof(rec), buf, len))) {
tdb_chainunlock(tdb, kbuf);
DEBUG(10,("message_send_pid: discarding duplicate message.\n"));
DEBUG(10,("message_send_pid_internal: discarding duplicate message.\n"));
SAFE_FREE(dbuf.dptr);
SAFE_FREE(old_dbuf.dptr);
return True;
@ -258,6 +279,25 @@ BOOL message_send_pid(pid_t pid, int msg_type, const void *buf, size_t len,
return message_notify(pid);
}
/****************************************************************************
Send a message to a particular pid - no timeout.
****************************************************************************/
BOOL message_send_pid(pid_t pid, int msg_type, const void *buf, size_t len, BOOL duplicates_allowed)
{
return message_send_pid_internal(pid, msg_type, buf, len, duplicates_allowed, 0);
}
/****************************************************************************
Send a message to a particular pid, with timeout in seconds.
****************************************************************************/
BOOL message_send_pid_with_timeout(pid_t pid, int msg_type, const void *buf, size_t len,
BOOL duplicates_allowed, unsigned int timeout)
{
return message_send_pid_internal(pid, msg_type, buf, len, duplicates_allowed, timeout);
}
/****************************************************************************
Retrieve all messages for the current process.
****************************************************************************/