Asynchronous facilities. Restructuring of seshigh code.

[yaz-moved-to-github.git] / server / session.h

diff --git a/server/session.h b/server/session.h
index b36448a..bf3fc3e 100644 (file)
--- a/server/session.h
+++ b/server/session.h
@@ -4,7 +4,10 @@
  * Sebastian Hammer, Adam Dickmeiss
  *
  * $Log: session.h,v $
- * Revision 1.5  1995-04-20 15:13:01  quinn
+ * Revision 1.6  1995-05-15 11:56:41  quinn
+ * Asynchronous facilities. Restructuring of seshigh code.
+ *
+ * Revision 1.5  1995/04/20  15:13:01  quinn
  * Cosmetic
  *
  * Revision 1.4  1995/04/10  10:23:39  quinn
@@ -29,6 +32,35 @@
 #include <comstack.h>
 #include <odr.h>
 #include <oid.h>
+#include <proto.h>
+#include <eventl.h>
+
+typedef struct request
+{
+    int len_refid;          /* length of referenceid */
+    char *refid;            /* referenceid */
+    enum {
+       REQUEST_IDLE,    /* the request is just sitting in the queue */
+       REQUEST_PENDING  /* operation pending (b'end processing or network I/O*/
+       /* this list will have more elements when acc/res control is added */
+    } state;
+
+    Z_APDU *request;        /* Current request */
+    ODR_MEM request_mem;    /* ODR memory handle for request */
+
+    int size_response;     /* size of buffer */
+    int len_response;      /* length of encoded data */
+    char *response;        /* encoded data waiting for transmission */
+
+    struct request *next;
+} request;
+
+typedef struct request_q
+{
+    request *head;
+    request *tail;
+    int num;
+} request_q;
 
 /*
  * association state.
@@ -40,15 +72,18 @@ typedef struct association
     ODR decode;                   /* decoding stream */
     ODR encode;                   /* encoding stream */
     ODR print;                    /* printing stream (for -a) */
-    char *encode_buffer;          /* temporary holding of encoded data */
+    char *encode_buffer;          /* temporary buffer for encoded data */
     int encoded_len;              /* length of encoded data */
     char *input_buffer;           /* input buffer (allocated by comstack) */
     int input_buffer_len;         /* length (size) of buffer */
     int input_apdu_len;           /* length of current incoming APDU */
     oid_proto proto;              /* protocol (PROTO_Z3950/PROTO_SR) */
     void *backend;                /* backend handle */
+    request_q incoming;           /* Q of incoming PDUs */
+    request_q outgoing;           /* Q of outgoing data buffers (enc. PDUs) */
 
-    int preferredMessageSize;     /* session parameters */
+    /* session parameters */
+    int preferredMessageSize;
     int maximumRecordSize;
 } association;
 
@@ -56,4 +91,11 @@ association *create_association(IOCHAN channel, COMSTACK link);
 void destroy_association(association *h);
 void ir_session(IOCHAN h, int event);
 
+void request_enq(request_q *q, request *r);
+request *request_head(request_q *q);
+request *request_deq(request_q *q);
+void request_initq(request_q *q);
+request *request_get(void);
+void request_release(request *r);
+
 #endif