Strange semget/semop "abort" crash
Strange semget/semop "abort" crash
- Subject: Strange semget/semop "abort" crash
- From: Stéphane Letz <email@hidden>
- Date: Sun, 13 Dec 2009 11:15:30 +0100
Hi,
We get a strange crash log in our code that uses the semget/semop API and cause an "abort" on OSX 10.6.2. Here is the log and the code that crashes:
• Thread 0 Crashed: Dispatch queue: com.apple.main-thread
• 0 libSystem.B.dylib 0x941b2732 __kill + 10
• 1 libSystem.B.dylib 0x941b2724 kill$UNIX2003 + 32
• 2 libSystem.B.dylib 0x9424598d raise + 26
• 3 libSystem.B.dylib 0x9425ba44 abort + 93
• 4 Jackmp 0x1648bbb5 semaphore_init + 197
• 5 Jackmp 0x1648bdb5 jack_initialize_shm + 389
•
semaphore_init ()
{
key_t semkey = JACK_SEMAPHORE_KEY;
struct sembuf sbuf;
int create_flags = IPC_CREAT | IPC_EXCL
| S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH;
/* Get semaphore ID associated with this key. */
if ((semid = semget(semkey, 0, 0)) == -1) {
/* Semaphore does not exist - Create. */
if ((semid = semget(semkey, 1, create_flags)) != -1) {
/* Initialize the semaphore, allow one owner. */
sbuf.sem_num = 0;
sbuf.sem_op = 1;
sbuf.sem_flg = 0;
if (semop(semid, &sbuf, 1) == -1) {
semaphore_error ("semop");
}
} else if (errno == EEXIST) {
if ((semid = semget(semkey, 0, 0)) == -1) {
semaphore_error ("semget");
}
} else {
semaphore_error ("semget creation");
}
}
}
What could be the reason?
Thanks
Stéphane Letz
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Darwin-dev mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden