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* Set msg_qbytes on IPC_SET

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* Wake up only one thread waiting to send.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27402 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Salvatore Benedetto
2008-09-10 16:22:23 +00:00
parent ea0316d305
commit 7adf6ce100
1 changed files with 8 additions and 1 deletions
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src/system/kernel/posix/xsi_message_queue.cpp
+8 -1
View File
@@ -133,6 +133,7 @@ public:
fMessageQueue.msg_perm.gid = result->msg_perm.gid; fMessageQueue.msg_perm.gid = result->msg_perm.gid;
fMessageQueue.msg_perm.mode = (fMessageQueue.msg_perm.mode & ~0x01ff) fMessageQueue.msg_perm.mode = (fMessageQueue.msg_perm.mode & ~0x01ff)
| (result->msg_perm.mode & 0x01ff); | (result->msg_perm.mode & 0x01ff);
fMessageQueue.msg_qbytes = result->msg_qbytes;
fMessageQueue.msg_ctime = (time_t)real_time_clock(); fMessageQueue.msg_ctime = (time_t)real_time_clock();
} }
@@ -249,7 +250,8 @@ public:
thread_unblock_locked(entry->thread, 0); thread_unblock_locked(entry->thread, 0);
} }
} else { } else {
while (queued_thread *entry = fWaitingToSend.RemoveHead()) { // Wake up only one thread waiting to send
if (queued_thread *entry = fWaitingToSend.RemoveHead()) {
entry->queued = false; entry->queued = false;
fThreadsWaitingToSend--; fThreadsWaitingToSend--;
thread_unblock_locked(entry->thread, 0); thread_unblock_locked(entry->thread, 0);
@@ -587,6 +589,11 @@ _user_xsi_msgctl(int messageQueueID, int command, struct msqid_ds *buffer)
"increase the maximum number of bytes allowed on queue\n")); "increase the maximum number of bytes allowed on queue\n"));
return EPERM; return EPERM;
} }
if (msg.msg_qbytes == 0) {
TRACE_ERROR(("xsi_msgctl: can't set msg_qbytes to 0!\n"));
return EINVAL;
}
messageQueue->DoIpcSet(&msg); messageQueue->DoIpcSet(&msg);
break; break;
} }