[vala/staging: 6/6] posix: Add Posix IPC (Message Queue, Named Semaphores, Shared Memory)

[Rico Tzschichholz <ricotz src gnome org>]

commit 2c488b51bd27533d014aef59938bb19477aaffb2
Author: Dr. Michael Lauer <mickey vanille-media de>
Date:   Sun Mar 11 21:13:30 2018 +0100

    posix: Add Posix IPC (Message Queue, Named Semaphores, Shared Memory)

 vapi/posix.vapi |   49 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 49 insertions(+), 0 deletions(-)
---
diff --git a/vapi/posix.vapi b/vapi/posix.vapi
index 02f25b3..13a6c5d 100644
--- a/vapi/posix.vapi
+++ b/vapi/posix.vapi
@@ -771,6 +771,29 @@ namespace Posix {
        [CCode (cheader_filename = "math.h")]
        public float scalbf (float x, float n);
 
+       [SimpleType]
+       [CCode (cname = "mqd_t", cheader_filename = "mqueue.h", lower_case_cprefix = "mq_", free_function = 
"mq_close", has_type_id = false)]
+       public struct MessageQueue {
+               [CCode (cname = "mq_open")]
+               public MessageQueue (string name, int oflag, mode_t mode = 0, MqAttr? attr = null);
+               public static int unlink (string name);
+               public int notify (sigevent_t? notification = null);
+               public int getattr (MqAttr attr);
+               public int setattr (MqAttr attr, MqAttr? oldattr = null);
+               public int send (uint8[] msg, uint prio = 0);
+               public int timedsend (uint8[] msg, uint prio, timespec abs_timeout);
+               public ssize_t receive (uint8[] msg, out uint prio);
+               public ssize_t timedreceive (uint8[] msg, out uint prio, timespec abs_timeout);
+       }
+
+       [CCode (cname = "struct mq_attr", cheader_filename = "mqueue.h", destroy_function = "", has_type_id = 
false)]
+       public struct MqAttr {
+               public long mq_flags;
+               public long mq_maxmsg;
+               public long mq_msgsize;
+               public long mq_curmsgs;
+       }
+
        [CCode (cheader_filename = "netdb.h")]
        public const int NI_NAMEREQD;
        [CCode (cheader_filename = "netdb.h")]
@@ -838,6 +861,20 @@ namespace Posix {
        [CCode (cheader_filename = "pwd.h")]
        public unowned Passwd? getpwuid (uid_t uid);
 
+       [Compact]
+       [CCode (cname = "sem_t", cheader_filename = "semaphore.h", cprefix = "SEM_", lower_case_cprefix = 
"sem_", has_type_id = false, copy_function = "", free_function = "sem_close")]
+       public class NamedSemaphore {
+               [CCode (cname = "sem_open")]
+               public NamedSemaphore (string name, int oflag = 0, mode_t mode = 0, uint val = 0);
+               public int getvalue (out int sval);
+               public int post ();
+               public int wait ();
+               public int trywait ();
+               public int timedwait (Posix.timespec abs_timeout);
+               public static int unlink (string name);
+               public const int FAILED;
+       }
+
        [CCode (cheader_filename = "sys/resource.h")]
        public const int PRIO_PROCESS;
        [CCode (cheader_filename = "sys/resource.h")]
@@ -1221,6 +1258,13 @@ namespace Posix {
                int              sa_flags;
        }
 
+       [CCode (cname = "struct sigevent", cheader_filename = "signal.h", has_type_id = false)]
+       public struct sigevent_t {
+               sigval_t         sigev_value;
+               int              sigev_signo;
+               int              sigev_notify;
+       }
+
        [SimpleType]
        [CCode (cname = "sigval_t", cheader_filename = "signal.h", has_type_id = false)]
        public struct sigval_t {
@@ -2703,6 +2747,11 @@ namespace Posix {
        public int mlock(void *addr, size_t len);
        [CCode (cheader_filename = "sys/mman.h")]
        public int munlock(void *addr, size_t len);
+       // sys/mman.h - [SHM] Shared Memory
+       [CCode (cheader_filename = "sys/mman.h")]
+       public int shm_open (string name, int oflag, mode_t mode = 0);
+       [CCode (cheader_filename = "sys/mman.h")]
+       public int shm_unlink (string name);
        // sys/mman.h - Process Memory Locking
        [CCode (cheader_filename = "sys/mman.h")]
        public const int MCL_CURRENT;