original files of m241

components/ip_net2-6.9/ipcom/src/ipcom_pipe.c

@@ -0,0 +1,304 @@
+/*
+ ******************************************************************************
+ *                     INTERPEAK SOURCE FILE
+ *
+ *   Document no: @(#) $Name: VXWORKS_ITER40_2019102207 $ $RCSfile: ipcom_pipe.c,v $ $Revision: 1.10 $
+ *   $Source: /home/interpeak/CVSRoot/ipcom/src/ipcom_pipe.c,v $
+ *   $Author: ulf $
+ *   $State: Exp $ $Locker:  $
+ *
+ *   INTERPEAK_COPYRIGHT_STRING
+ *   Design and implementation by Markus Carlstedt <markus.carlstedt@windriver.com>
+ ******************************************************************************
+ */
+
+
+/*
+ ****************************************************************************
+ * 1                    DESCRIPTION
+ ****************************************************************************
+ */
+
+/*
+ ****************************************************************************
+ * 2                    CONFIGURATION
+ ****************************************************************************
+ */
+
+#include "ipcom_config.h"
+
+
+/*
+ ****************************************************************************
+ * 3                    INCLUDE FILES
+ ****************************************************************************
+ */
+
+#define IPCOM_USE_CLIB_PROTO
+#include <ipcom_type.h>
+#include <ipcom_clib.h>
+#include <ipcom_cstyle.h>
+#include <ipcom_err.h>
+#include <ipcom_os.h>
+#include <ipcom_pipe.h>
+
+/*
+ ****************************************************************************
+ * 4                    DEFINES
+ ****************************************************************************
+ */
+
+/*
+ ****************************************************************************
+ * 5                    TYPES
+ ****************************************************************************
+ */
+
+/*
+ ****************************************************************************
+ * 6                    EXTERN PROTOTYPES
+ ****************************************************************************
+ */
+
+IP_EXTERN Ip_err ipcom_pipe_generic_create(Ipcom_pipe *pipe, Ipcom_pipe_attr *attr);
+IP_EXTERN Ip_err ipcom_pipe_lockless_create(Ipcom_pipe *pipe, Ipcom_pipe_attr *attr);
+IP_EXTERN Ip_err ipcom_pipe_job_queue_create(Ipcom_pipe *pipe, Ipcom_pipe_attr *attr);
+IP_EXTERN Ip_err ipnet_pipe_create(Ipcom_pipe *pipe, Ipcom_pipe_attr *attr);
+
+
+/*
+ ****************************************************************************
+ * 7                    LOCAL PROTOTYPES
+ ****************************************************************************
+ */
+
+IP_STATIC Ip_err ipcom_pipe_register_type_int(int *type,
+                                              Ipcom_pipe_create create);
+
+/*
+ ****************************************************************************
+ * 8                    DATA
+ ****************************************************************************
+ */
+
+IP_STATIC Ipcom_mutex ipcom_pipe_mutex;
+IP_STATIC Ipcom_pipe_create ipcom_pipe_types[IPCOM_PIPE_MAX+1];
+IP_STATIC Ipcom_once_t ipcom_pipe_once = IPCOM_ONCE_INIT;
+
+struct Ip_timeval ipcom_pipe_tv_zero = { 0, 0 };
+
+
+/*
+ ****************************************************************************
+ * 9                    STATIC FUNCTIONS
+ ****************************************************************************
+ */
+
+/*
+ *===========================================================================
+ *                    ipcom_pipe_init
+ *===========================================================================
+ * Description:
+ * Parameters:
+ * Returns:
+ *
+ */
+IP_STATIC Ip_err
+ipcom_pipe_init(void *unused)
+{
+    Ip_err err;
+    int type;
+
+    (void)unused;
+
+    err = ipcom_mutex_create(&ipcom_pipe_mutex);
+    if (err != IPCOM_SUCCESS)
+        return err;
+
+    ipcom_memset(ipcom_pipe_types, 0, sizeof(ipcom_pipe_types));
+    type = IPCOM_PIPE_GENERIC;
+    err = ipcom_pipe_register_type_int(&type, ipcom_pipe_generic_create);
+#ifndef IP_PORT_OSE5
+    type = IPCOM_PIPE_LOCKLESS;
+    err = ipcom_pipe_register_type_int(&type, ipcom_pipe_lockless_create);
+#endif
+#ifdef IPCOM_USE_JOB_QUEUE
+    type = IPCOM_PIPE_JOB_QUEUE;
+    err = ipcom_pipe_register_type_int(&type, ipcom_pipe_job_queue_create);
+#endif
+#ifdef IPNET
+    type = IPCOM_PIPE_IPNET;
+    err = ipcom_pipe_register_type_int(&type, ipnet_pipe_create);
+#endif
+    return err;
+}
+
+
+/*
+ *===========================================================================
+ *                    ipcom_pipe_register_type_int
+ *===========================================================================
+ * Description:
+ * Parameters:
+ * Returns:
+ *
+ */
+IP_STATIC Ip_err
+ipcom_pipe_register_type_int(int *type, Ipcom_pipe_create create)
+{
+    Ip_err err = IPCOM_SUCCESS;
+    int    i   = 0;
+
+    ipcom_mutex_lock(ipcom_pipe_mutex);
+    if (*type == IPCOM_PIPE_NEXT)
+    {
+        while(i < (IPCOM_PIPE_MAX+1) && ipcom_pipe_types[i] != IP_NULL)
+            i++;
+        if (i > IPCOM_PIPE_MAX)
+        {
+            err = IPCOM_ERR_FAILED;
+            goto done;
+        }
+        else
+            *type = i;
+    }
+    else if (*type > IPCOM_PIPE_MAX || ipcom_pipe_types[*type] != IP_NULL)
+    {
+        err = IPCOM_ERR_FAILED;
+        goto done;
+    }
+    ipcom_pipe_types[*type] = create;
+
+done:
+    ipcom_mutex_unlock(ipcom_pipe_mutex);
+    return err;
+}
+
+
+/*
+ ****************************************************************************
+ * 10                   GLOBAL FUNCTIONS
+ ****************************************************************************
+ */
+
+/*
+ ****************************************************************************
+ * 11                   PUBLIC FUNCTIONS
+ ****************************************************************************
+ */
+
+/*
+ *===========================================================================
+ *                    ipcom_proc_attr_init
+ *===========================================================================
+ * Description:
+ * Parameters:
+ * Returns:
+ *
+ */
+IP_PUBLIC void
+ipcom_pipe_attr_init(Ipcom_pipe_attr *attr)
+{
+    attr->msg_limit = IPCOM_PIPE_MSG_LIMIT_FEW;
+}
+
+
+/*
+ *===========================================================================
+ *                    ipcom_pipe_new
+ *===========================================================================
+ * Description:
+ * Parameters:
+ * Returns:
+ *
+ */
+IP_PUBLIC Ipcom_pipe *
+ipcom_pipe_new(int type, Ipcom_pipe_attr *attr)
+{
+    Ipcom_pipe       *pipe;
+    Ip_err            err;
+    Ipcom_pipe_create pipe_create_func = IP_NULL;
+
+    err = ipcom_once(&ipcom_pipe_once, ipcom_pipe_init, IP_NULL);
+    if (err != IPCOM_SUCCESS)
+        return IPCOM_PIPE_INVALID;
+
+    pipe = ipcom_malloc(sizeof(*pipe));
+    if (pipe == IP_NULL)
+        return IPCOM_PIPE_INVALID;
+    ipcom_memset(pipe, 0, sizeof(*pipe));
+    pipe->type  = type;
+    pipe->owner = ipcom_getpid();
+    if (attr)
+        ipcom_memcpy(&pipe->attr, attr, sizeof(*attr));
+
+    ipcom_mutex_lock(ipcom_pipe_mutex);
+    if (type <= IPCOM_PIPE_MAX)
+        pipe_create_func = ipcom_pipe_types[type];
+    ipcom_mutex_unlock(ipcom_pipe_mutex);
+
+    if (pipe_create_func == IP_NULL)
+    {
+        err = IPCOM_ERR_FAILED;
+        goto done;
+    }
+    err = pipe_create_func(pipe, attr);
+
+done:
+    if (err != IPCOM_SUCCESS)
+    {
+        ipcom_free(pipe);
+        return IPCOM_PIPE_INVALID;
+    }
+    return pipe;
+}
+
+
+/*
+ *===========================================================================
+ *                    ipcom_pipe_free
+ *===========================================================================
+ * Description:
+ * Parameters:
+ * Returns:
+ *
+ */
+IP_PUBLIC void
+ipcom_pipe_free(Ipcom_pipe *pipe)
+{
+    if (pipe != IP_NULL)
+    {
+        pipe->ops->dtor(pipe);
+        ipcom_free(pipe);
+    }
+}
+
+
+/*
+ *===========================================================================
+ *                    ipcom_pipe_register_type
+ *===========================================================================
+ * Description:
+ * Parameters:
+ * Returns:
+ *
+ */
+IP_PUBLIC Ip_err
+ipcom_pipe_register_type(int *type, Ipcom_pipe_create create)
+{
+    Ip_err err = IPCOM_SUCCESS;
+
+    err = ipcom_once(&ipcom_pipe_once, ipcom_pipe_init, IP_NULL);
+    if (err != IPCOM_SUCCESS)
+        return err;
+
+    return ipcom_pipe_register_type_int(type, create);
+}
+
+
+
+/*
+ ****************************************************************************
+ *                      END OF FILE
+ ****************************************************************************
+ */