X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=bfile%2Fcfile.c;h=5b27f49ba1928d8da4e89f84f910326fe0393045;hb=2b1851bd5565e3d21f9cf9a37661a584c063b75f;hp=5a6209bc58b8f47e707ae235233d3312dcf94372;hpb=5e1f8f38f613f6e662a189eed0879d23a29e9e26;p=idzebra-moved-to-github.git

diff --git a/bfile/cfile.c b/bfile/cfile.c
index 5a6209b..5b27f49 100644
--- a/bfile/cfile.c
+++ b/bfile/cfile.c
@@ -1,10 +1,19 @@
 /*
- * Copyright (C) 1995-1998, Index Data ApS
+ * Copyright (C) 1995-2000, Index Data ApS
  * All rights reserved.
- * Sebastian Hammer, Adam Dickmeiss
  *
  * $Log: cfile.c,v $
- * Revision 1.23  1998-10-15 13:09:29  adam
+ * Revision 1.26  2000-03-20 19:08:35  adam
+ * Added remote record import using Z39.50 extended services and Segment
+ * Requests.
+ *
+ * Revision 1.25  1999/05/26 07:49:12  adam
+ * C++ compilation.
+ *
+ * Revision 1.24  1999/05/12 13:08:06  adam
+ * First version of ISAMS.
+ *
+ * Revision 1.23  1998/10/15 13:09:29  adam
  * Minor changes.
  *
  * Revision 1.22  1998/10/13 20:07:22  adam
@@ -96,7 +105,7 @@ static int write_head (CFile cf)
 
     if (!tab)
         return 0;
-    while (left >= HASH_BSIZE)
+    while (left >= (int) HASH_BSIZE)
     {
         mf_write (cf->hash_mf, bno++, 0, 0, tab);
         tab += HASH_BSIZE;
@@ -115,7 +124,7 @@ static int read_head (CFile cf)
 
     if (!tab)
         return 0;
-    while (left >= HASH_BSIZE)
+    while (left >= (int) HASH_BSIZE)
     {
         mf_read (cf->hash_mf, bno++, 0, 0, tab);
         tab += HASH_BSIZE;
@@ -163,7 +172,7 @@ CFile cf_open (MFile mf, MFile_area area, const char *fname,
         cf->head.next_block = 1;
         if (wflag)
             mf_write (cf->hash_mf, 0, 0, sizeof(cf->head), &cf->head);
-        cf->array = xmalloc (hash_bytes);
+        cf->array = (int *) xmalloc (hash_bytes);
         for (i = 0; i<cf->head.hash_size; i++)
             cf->array[i] = 0;
         if (wflag)
@@ -178,14 +187,15 @@ CFile cf_open (MFile mf, MFile_area area, const char *fname,
         assert (cf->head.next_bucket > 0);
         assert (cf->head.next_block > 0);
         if (cf->head.state == 1)
-            cf->array = xmalloc (hash_bytes);
+            cf->array = (int *) xmalloc (hash_bytes);
         else
             cf->array = NULL;
         read_head (cf);
     }
     if (cf->head.state == 1)
     {
-        cf->parray = xmalloc (cf->head.hash_size * sizeof(*cf->parray));
+        cf->parray = (struct CFile_hash_bucket **)
+	    xmalloc (cf->head.hash_size * sizeof(*cf->parray));
         for (i = 0; i<cf->head.hash_size; i++)
             cf->parray[i] = NULL;
     }
@@ -195,10 +205,11 @@ CFile cf_open (MFile mf, MFile_area area, const char *fname,
     cf->bucket_in_memory = 0;
     cf->max_bucket_in_memory = 100;
     cf->dirty = 0;
-    cf->iobuf = xmalloc (cf->head.block_size);
+    cf->iobuf = (char *) xmalloc (cf->head.block_size);
     memset (cf->iobuf, 0, cf->head.block_size);
     cf->no_hits = 0;
     cf->no_miss = 0;
+    zebra_mutex_init (&cf->mutex);
     return cf;
 }
 
@@ -253,7 +264,7 @@ static struct CFile_hash_bucket *alloc_bucket (CFile cf, int block_no, int hno)
         flush_bucket (cf, 1);
     assert (cf->bucket_in_memory < cf->max_bucket_in_memory);
     ++(cf->bucket_in_memory);
-    p = xmalloc (sizeof(*p));
+    p = (struct CFile_hash_bucket *) xmalloc (sizeof(*p));
 
     p->lru_next = NULL;
     p->lru_prev = cf->bucket_lru_front;
@@ -390,7 +401,7 @@ static void cf_moveto_flat (CFile cf)
     assert (cf->head.state == 1);
     flush_bucket (cf, -1);
     assert (cf->bucket_in_memory == 0);
-    p = xmalloc (sizeof(*p));
+    p = (struct CFile_hash_bucket *) xmalloc (sizeof(*p));
     for (i = cf->head.first_bucket; i < cf->head.next_bucket; i++)
     {
         if (!mf_read (cf->hash_mf, i, 0, 0, &p->ph))
@@ -503,14 +514,19 @@ int cf_new (CFile cf, int no)
 }
 
 
-int cf_read (CFile cf, int no, int offset, int num, void *buf)
+int cf_read (CFile cf, int no, int offset, int nbytes, void *buf)
 {
     int block;
     
     assert (cf);
+    zebra_mutex_lock (&cf->mutex);
     if (!(block = cf_lookup (cf, no)))
+    {
+	zebra_mutex_unlock (&cf->mutex);
         return -1;
-    if (!mf_read (cf->block_mf, block, offset, num, buf))
+    }
+    zebra_mutex_unlock (&cf->mutex);
+    if (!mf_read (cf->block_mf, block, offset, nbytes, buf))
     {
         logf (LOG_FATAL|LOG_ERRNO, "cf_read no=%d, block=%d", no, block);
         exit (1);
@@ -518,24 +534,26 @@ int cf_read (CFile cf, int no, int offset, int num, void *buf)
     return 1;
 }
 
-int cf_write (CFile cf, int no, int offset, int num, const void *buf)
+int cf_write (CFile cf, int no, int offset, int nbytes, const void *buf)
 {
     int block;
 
     assert (cf);
+    zebra_mutex_lock (&cf->mutex);
     if (!(block = cf_lookup (cf, no)))
     {
         block = cf_new (cf, no);
-        if (offset || num)
+        if (offset || nbytes)
         {
             mf_read (cf->rmf, no, 0, 0, cf->iobuf);
-            memcpy (cf->iobuf + offset, buf, num);
+            memcpy (cf->iobuf + offset, buf, nbytes);
             buf = cf->iobuf;
             offset = 0;
-            num = 0;
+            nbytes = 0;
         }
     }
-    if (mf_write (cf->block_mf, block, offset, num, buf))
+    zebra_mutex_unlock (&cf->mutex);
+    if (mf_write (cf->block_mf, block, offset, nbytes, buf))
     {
         logf (LOG_FATAL|LOG_ERRNO, "cf_write no=%d, block=%d", no, block);
         exit (1);
@@ -559,6 +577,7 @@ int cf_close (CFile cf)
     xfree (cf->array);
     xfree (cf->parray);
     xfree (cf->iobuf);
+    zebra_mutex_destroy (&cf->mutex);
     xfree (cf);
     return 0;
 }