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POSIX message queues

Name: Anonymous 2008-05-20 9:22

I want to create am message queue using POSIX mq_open(), unfortunately no message queue is created and mq_open() only returns -1.

Any ideas how i could get more information why mq_open() failed or how i could debug it further?


#include <mqueue.h>
...
#define MAX_MSG   100
#define OVER      (-1)
#define PMODE     0666
#define QUEUENAME "/myipc"
#define QUEUESIZE 10
...
mqd_t id;
struct mq_attr attr;
attr.mq_maxmsg = QUEUESIZE;
attr.mq_msgsize = sizeof (int);
attr.mq_flags = 0;

id = mq_open (QUEUENAME, O_RDWR, PMODE, &attr);

Name: Anonymous 2008-05-20 13:06

    ┌────────────────────────────────────────────────┒
    │ ◕                   REASON                   ◕ ┃
    │                  Version 1.0B7                 ┃
    │ Gatling type 3 mm hypervelocity railgun system ┃
    │            Ng Security Industries, Inc.        ┃
    │        PRERELEASE VERSION-NOT FOR FIELD USE    ┃
    │          DO NOT TEST IN A POPULATED AREA       ┃
    │ ◕             -ULTIMA RATIO REGUM-           ◕ ┃
    ┕━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛

    ┌────────────────────────────────────────────────┒
    │ ◕                   REASON                   ◕ ┃
    │                  Version 1.0B7                 ┃
    │ Gatling type 3 mm hypervelocity railgun system ┃
    │            Ng Security Industries, Inc.        ┃
    │        PRERELEASE VERSION-NOT FOR FIELD USE    ┃
    │          DO NOT TEST IN A POPULATED AREA       ┃
    │ ◕             -ULTIMA RATIO REGUM-           ◕ ┃
    ┕━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛

    ┌────────────────────────────────────────────────┒
    │ ◕                   REASON                   ◕ ┃
    │                  Version 1.0B7                 ┃
    │ Gatling type 3 mm hypervelocity railgun system ┃
    │            Ng Security Industries, Inc.        ┃
    │        PRERELEASE VERSION-NOT FOR FIELD USE    ┃
    │          DO NOT TEST IN A POPULATED AREA       ┃
    │ ◕             -ULTIMA RATIO REGUM-           ◕ ┃
    ┕━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛

Name: Anonymous 2008-05-20 13:10

┌────────────────────────────────────────────────┒
│ ◕                   REASON                   ◕ ┃
│                  Version 1.0B7                 ┃
│ Gatling type 3 mm hypervelocity railgun system ┃
│            Ng Security Industries, Inc.        ┃
│        PRERELEASE VERSION-NOT FOR FIELD USE    ┃
│          DO NOT TEST IN A POPULATED AREA       ┃
│ ◕             -ULTIMA RATIO REGUM-           ◕ ┃
┕━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛

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