Implemented temporary resources

[libucw.git] / ucw / respool.c

diff --git a/ucw/respool.c b/ucw/respool.c
index 6a1687f3d51a96106ca6efe4feed0c1cf5427252..a4978fdf51ad030ff323cd00aa2b3336acd9d951 100644 (file)
--- a/ucw/respool.c
+++ b/ucw/respool.c
@@ -1,7 +1,7 @@
 /*
  *     The UCW Library -- Resource Pools
  *
- *     (c) 2008 Martin Mares <mj@ucw.cz>
+ *     (c) 2008--2011 Martin Mares <mj@ucw.cz>
  *
  *     This software may be freely distributed and used according to the terms
  *     of the GNU Lesser General Public License.
@@ -27,12 +27,15 @@ rp_new(const char *name, struct mempool *mp)
     rp = xmalloc_zero(sizeof(*rp));
   clist_init(&rp->resources);
   rp->name = name;
+  rp->default_res_flags = RES_FLAG_TEMP;
   return rp;
 }
 
 static void
 rp_free(struct respool *rp)
 {
+  if (rp->subpool_of)
+    res_detach(rp->subpool_of);
   if (!rp->mpool)
     xfree(rp);
   if (rp_current() == rp)
@@ -64,11 +67,32 @@ rp_detach(struct respool *rp)
 }
 
 void
-rp_dump(struct respool *rp)
+rp_commit(struct respool *rp)
 {
-  printf("Resource pool %s at %p (%s):\n", (rp->name ? : "(noname)"), rp, (rp->mpool ? "mempool-based" : "freestanding"));
+  struct resource *r;
+  while (r = clist_head(&rp->resources))
+    {
+      ASSERT(r->rpool == rp);
+      if (r->flags & RES_FLAG_TEMP)
+       res_free(r);
+      else
+       res_detach(r);
+    }
+  rp_free(rp);
+}
+
+void
+rp_dump(struct respool *rp, uns indent)
+{
+  printf("%*sResource pool %s at %p (%s)%s:\n",
+        indent, "",
+        (rp->name ? : "(noname)"),
+        rp,
+        (rp->mpool ? "mempool-based" : "freestanding"),
+        (rp->subpool_of ? " (subpool)" : "")
+        );
   CLIST_FOR_EACH(struct resource *, r, rp->resources)
-    res_dump(r);
+    res_dump(r, indent+4);
 }
 
 struct resource *
@@ -82,6 +106,7 @@ res_alloc(const struct res_class *rc)
   struct resource *r = (rp->mpool ? mp_alloc_fast(rp->mpool, size) : xmalloc(size));
   r->rpool = rp;
   clist_add_tail(&rp->resources, &r->n);
+  r->flags = rp->default_res_flags;
   return r;
 }
 
@@ -110,12 +135,13 @@ res_free(struct resource *r)
 }
 
 void
-res_dump(struct resource *r)
+res_dump(struct resource *r, uns indent)
 {
-  printf("\t%p %s", r, r->rclass->name);
+  printf("%*s%p %s %s", indent, "", r, ((r->flags & RES_FLAG_TEMP) ? "TEMP" : "PERM"), r->rclass->name);
   if (r->rclass->dump)
-    r->rclass->dump(r);
-  putchar('\n');
+    r->rclass->dump(r, indent+4);
+  else
+    putchar('\n');
 }
 
 #ifdef TEST
@@ -128,7 +154,7 @@ int main(void)
   struct respool *rp = rp_new("test", NULL);
   rp_switch(rp);
   struct fastbuf *f = bfdopen_shared(1, 0);
-  rp_dump(rp);
+  rp_dump(rp, 0);
   bputsn(f, "Hello, all worlds!");
   bclose(f);
   rp_delete(rp);