move pa_queue to an implementation based on pa_flist

git-svn-id: file:///home/lennart/svn/public/pulseaudio/branches/lennart@1619 fefdeb5f-60dc-0310-8127-8f9354f1896f

src/Makefile.am

@@ -223,7 +223,8 @@ noinst_PROGRAMS = \
 		thread-test \
 		flist-test \
 		asyncq-test \
-		asyncmsgq-test
+		asyncmsgq-test \
+		queue-test
 
 if HAVE_SIGXCPU
 noinst_PROGRAMS += \
@@ -293,6 +294,11 @@ asyncmsgq_test_CFLAGS = $(AM_CFLAGS)
 asyncmsgq_test_LDADD = $(AM_LDADD) libpulsecore.la
 asyncmsgq_test_LDFLAGS = $(AM_LDFLAGS) $(BINLDFLAGS)
 
+queue_test_SOURCES = tests/queue-test.c
+queue_test_CFLAGS = $(AM_CFLAGS)
+queue_test_LDADD = $(AM_LDADD) libpulsecore.la
+queue_test_LDFLAGS = $(AM_LDFLAGS) $(BINLDFLAGS)
+
 mcalign_test_SOURCES = tests/mcalign-test.c
 mcalign_test_CFLAGS = $(AM_CFLAGS)
 mcalign_test_LDADD = $(AM_LDADD) $(WINSOCK_LIBS) libpulsecore.la

src/pulsecore/queue.c

@@ -25,13 +25,16 @@
 #include <config.h>
 #endif
 
-#include <assert.h>
 #include <stdlib.h>
 
 #include <pulse/xmalloc.h>
+#include <pulsecore/macro.h>
+#include <pulsecore/flist.h>
 
 #include "queue.h"
 
+PA_STATIC_FLIST_DECLARE(entries, 0, pa_xfree);
+
 struct queue_entry {
     struct queue_entry *next;
     void *data;
@@ -44,25 +47,24 @@ struct pa_queue {
 
 pa_queue* pa_queue_new(void) {
     pa_queue *q = pa_xnew(pa_queue, 1);
+    
     q->front = q->back = NULL;
     q->length = 0;
+    
     return q;
 }
 
 void pa_queue_free(pa_queue* q, void (*destroy)(void *p, void *userdata), void *userdata) {
-    struct queue_entry *e;
+    void *data;
-    assert(q);
+    pa_assert(q);
-
-    e = q->front;
-    while (e) {
-        struct queue_entry *n = e->next;
 
+    while ((data = pa_queue_pop(q)))
         if (destroy)
-            destroy(e->data, userdata);
+            destroy(data, userdata);
 
-        pa_xfree(e);
+    pa_assert(!q->front);
-        e = n;
+    pa_assert(!q->back);
-    }
+    pa_assert(q->length == 0);
     
     pa_xfree(q);
 }
@@ -70,14 +72,17 @@ void pa_queue_free(pa_queue* q, void (*destroy)(void *p, void *userdata), void *
 void pa_queue_push(pa_queue *q, void *p) {
     struct queue_entry *e;
 
-    e = pa_xnew(struct queue_entry, 1);
+    if (!(e = pa_flist_pop(PA_STATIC_FLIST_GET(entries))))
+        e = pa_xnew(struct queue_entry, 1);
+    
     e->data = p;
     e->next = NULL;
 
-    if (q->back)
+    if (q->back) {
+        pa_assert(q->front);
         q->back->next = e;
-    else {
+    } else {
-        assert(!q->front);
+        pa_assert(!q->front);
         q->front = e;
     }
 
@@ -88,17 +93,22 @@ void pa_queue_push(pa_queue *q, void *p) {
 void* pa_queue_pop(pa_queue *q) {
     void *p;
     struct queue_entry *e;
-    assert(q);
+    pa_assert(q);
 
     if (!(e = q->front))
         return NULL;
 
     q->front = e->next;
-    if (q->back == e)
+
+    if (q->back == e) {
+        pa_assert(!e->next);
         q->back = NULL;
+    }
 
     p = e->data;
-    pa_xfree(e);
+
+    if (pa_flist_push(PA_STATIC_FLIST_GET(entries), e) < 0)
+        pa_xfree(e);
     
     q->length--;
 
@@ -106,6 +116,7 @@ void* pa_queue_pop(pa_queue *q) {
 }
 
 int pa_queue_is_empty(pa_queue *q) {
-    assert(q);
+    pa_assert(q);
+    
     return q->length == 0;
 }

src/tests/queue-test.c

@@ -0,0 +1,69 @@
+/* $Id$ */
+
+/***
+  This file is part of PulseAudio.
+
+  PulseAudio is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Lesser General Public License as published
+  by the Free Software Foundation; either version 2 of the License,
+  or (at your option) any later version.
+
+  PulseAudio is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with PulseAudio; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+  USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <assert.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <pulse/util.h>
+#include <pulse/xmalloc.h>
+#include <pulsecore/queue.h>
+#include <pulsecore/log.h>
+#include <pulsecore/core-util.h>
+#include <pulsecore/macro.h>
+
+int main(int argc, char *argv[]) {
+    pa_queue *q;
+
+    pa_assert_se(q = pa_queue_new());
+
+    pa_assert(pa_queue_is_empty(q));
+    
+    pa_queue_push(q, (void*) "eins");
+    pa_log("%s\n", (char*) pa_queue_pop(q));
+
+    pa_assert(pa_queue_is_empty(q));
+    
+    pa_queue_push(q, (void*) "zwei");
+    pa_queue_push(q, (void*) "drei");
+    pa_queue_push(q, (void*) "vier");
+
+    pa_log("%s\n", (char*) pa_queue_pop(q));
+    pa_log("%s\n", (char*) pa_queue_pop(q));
+
+    pa_queue_push(q, (void*) "fuenf");
+
+    pa_log("%s\n", (char*) pa_queue_pop(q));
+    pa_log("%s\n", (char*) pa_queue_pop(q));
+
+    pa_assert(pa_queue_is_empty(q));
+
+    pa_queue_push(q, (void*) "sechs");
+    pa_queue_push(q, (void*) "sieben");
+    
+    pa_queue_free(q, NULL, NULL);
+
+    return 0;
+}