X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=src%2Fhttp.c;h=d93c8742827051b79f136f15da1ce9a3e173d75a;hb=0df08cf93e60b248e8ec8cf44e3fd7b784e6ef78;hp=8321bb3b818f4966738cfa19af23431191534906;hpb=f9fd1939f30660831f6390a91839357133e005ea;p=pazpar2-moved-to-github.git

diff --git a/src/http.c b/src/http.c
index 8321bb3..d93c874 100644
--- a/src/http.c
+++ b/src/http.c
@@ -1,5 +1,5 @@
 /* This file is part of Pazpar2.
-   Copyright (C) 2006-2010 Index Data
+   Copyright (C) 2006-2011 Index Data
 
 Pazpar2 is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free
@@ -95,7 +95,12 @@ static void http_server_incref(http_server_t hs);
 struct http_server
 {
     struct http_buf *http_buf_freelist;
+    int http_buf_freelist_count;
+    int http_buf_freelist_max;
+
     struct http_channel *http_channel_freelist;
+    int http_channel_freelist_count;
+    int http_channel_freelist_max;
     YAZ_MUTEX mutex;
     int listener_socket;
     int ref_count;
@@ -130,6 +135,7 @@ static struct http_buf *http_buf_create(http_server_t hs)
     {
         r = hs->http_buf_freelist;
         hs->http_buf_freelist = hs->http_buf_freelist->next;
+        hs->http_buf_freelist_count--;
     }
     yaz_mutex_leave(hs->mutex);
     if (!r)
@@ -143,8 +149,22 @@ static struct http_buf *http_buf_create(http_server_t hs)
 static void http_buf_destroy(http_server_t hs, struct http_buf *b)
 {
     yaz_mutex_enter(hs->mutex);
-    b->next = hs->http_buf_freelist;
-    hs->http_buf_freelist = b;
+    if (hs->http_buf_freelist_max > 0 && hs->http_buf_freelist_count >= hs->http_buf_freelist_max) {
+        xfree(b);
+        while ((b = hs->http_buf_freelist)) {
+            xfree(b);
+            hs->http_buf_freelist = hs->http_buf_freelist->next;
+        }
+        hs->http_buf_freelist_count = 0;
+    }
+    else {
+        b->next = hs->http_buf_freelist;
+        hs->http_buf_freelist = b;
+        hs->http_buf_freelist_count++;
+#if 0 
+        yaz_log(YLOG_DEBUG, "Free %d http buffers on server.", hs->http_buf_freelist_count);
+#endif
+    }
     yaz_mutex_leave(hs->mutex);
 }
 
@@ -878,13 +898,13 @@ static void http_error(struct http_channel *hc, int no, const char *msg)
 static void http_io(IOCHAN i, int event)
 {
     struct http_channel *hc = iochan_getdata(i);
-
-    switch (event)
+    while (event)
     {
-        int res, reqlen;
-        struct http_buf *htbuf;
-
-        case EVENT_INPUT:
+        if (event == EVENT_INPUT)
+        {
+            int res, reqlen;
+            struct http_buf *htbuf;
+            
             htbuf = http_buf_create(hc->http_server);
             res = recv(iochan_getfd(i), htbuf->buf, HTTP_BUF_SIZE -1, 0);
             if (res == -1 && errno == EAGAIN)
@@ -933,12 +953,16 @@ static void http_io(IOCHAN i, int event)
                     http_command(hc);
                 }
             }
-            break;
-        case EVENT_OUTPUT:
+        }
+        else if (event == EVENT_OUTPUT)
+        {
+            event = 0;
             if (hc->oqueue)
             {
                 struct http_buf *wb = hc->oqueue;
-                res = send(iochan_getfd(hc->iochan), wb->buf + wb->offset, wb->len, 0);
+                int res;
+                res = send(iochan_getfd(hc->iochan),
+                           wb->buf + wb->offset, wb->len, 0);
                 if (res <= 0)
                 {
                     yaz_log(YLOG_WARN|YLOG_ERRNO, "write");
@@ -955,7 +979,8 @@ static void http_io(IOCHAN i, int event)
                     wb->len -= res;
                     wb->offset += res;
                 }
-                if (!hc->oqueue) {
+                if (!hc->oqueue)
+                {
                     if (!hc->keep_alive)
                     {
                         http_channel_destroy(i);
@@ -965,17 +990,19 @@ static void http_io(IOCHAN i, int event)
                     {
                         iochan_clearflag(i, EVENT_OUTPUT);
                         if (hc->iqueue)
-                            iochan_setevent(hc->iochan, EVENT_INPUT);
+                            event = EVENT_INPUT;
                     }
                 }
             }
-
             if (!hc->oqueue && hc->proxy && !hc->proxy->iochan) 
                 http_channel_destroy(i); // Server closed; we're done
-            break;
-        default:
+        }
+        else
+        {
             yaz_log(YLOG_WARN, "Unexpected event on connection");
             http_channel_destroy(i);
+            event = 0;
+        }
     }
 }
 
@@ -1091,8 +1118,21 @@ static void http_channel_destroy(IOCHAN i)
     http_server = s->http_server; /* save it for destroy (decref) */
 
     yaz_mutex_enter(s->http_server->mutex);
-    s->next = s->http_server->http_channel_freelist;
-    s->http_server->http_channel_freelist = s;
+    if (s->http_server->http_channel_freelist_max > 0 && s->http_server->http_channel_freelist_count >= s->http_server->http_channel_freelist_max) {
+        while ((s->next = s->http_server->http_channel_freelist)) {
+            nmem_destroy(s->next->nmem);
+            wrbuf_destroy(s->next->wrbuf);
+            xfree(s->next);
+            s->http_server->http_channel_freelist = s->http_server->http_channel_freelist->next;
+        }
+        s->http_server->http_channel_freelist_count = 0;
+    }
+    else {
+        s->next = s->http_server->http_channel_freelist;
+        s->http_server->http_channel_freelist = s;
+        s->http_server->http_channel_freelist_count++;
+        yaz_log(YLOG_DEBUG, "Free %d channels on server.", s->http_server->http_channel_freelist_count);
+    }
     yaz_mutex_leave(s->http_server->mutex);
 
     http_server_destroy(http_server);
@@ -1113,8 +1153,10 @@ static struct http_channel *http_channel_create(http_server_t hs,
 
     yaz_mutex_enter(hs->mutex);
     r = hs->http_channel_freelist;
-    if (r)
+    if (r) {
         hs->http_channel_freelist = r->next;
+        hs->http_channel_freelist_count--;
+    }
     yaz_mutex_leave(hs->mutex);
 
     if (r)
@@ -1362,9 +1404,17 @@ http_server_t http_server_create(void)
     hs->mutex = 0;
     hs->proxy_addr = 0;
     hs->ref_count = 1;
-    hs->http_buf_freelist = 0;
-    hs->http_channel_freelist = 0;
     hs->http_sessions = 0;
+
+    hs->http_channel_freelist = 0;
+    hs->http_channel_freelist_count = 0;
+    /* Disable max check */
+    hs->http_channel_freelist_max   = 0;
+
+    hs->http_buf_freelist = 0;
+    hs->http_buf_freelist_count = 0;
+    /* Disable max check */
+    hs->http_buf_freelist_max = 0;
     return hs;
 }