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-rw-r--r--pjlib/src/pj/pool_policy_new.cpp102
1 files changed, 102 insertions, 0 deletions
diff --git a/pjlib/src/pj/pool_policy_new.cpp b/pjlib/src/pj/pool_policy_new.cpp
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+/* $Id: pool_policy_new.cpp 3553 2011-05-05 06:14:19Z nanang $ */
+/*
+ * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
+ * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
+ *
+ * This program 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 Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include <pj/pool.h>
+#include <pj/except.h>
+#include <pj/os.h>
+
+#if !PJ_HAS_POOL_ALT_API
+
+/*
+ * This file contains pool default policy definition and implementation.
+ */
+#include "pool_signature.h"
+
+
+static void *operator_new(pj_pool_factory *factory, pj_size_t size)
+{
+ void *mem;
+
+ PJ_CHECK_STACK();
+
+ if (factory->on_block_alloc) {
+ int rc;
+ rc = factory->on_block_alloc(factory, size);
+ if (!rc)
+ return NULL;
+ }
+
+ mem = (void*) new char[size+(SIG_SIZE << 1)];
+
+ /* Exception for new operator may be disabled, so.. */
+ if (mem) {
+ /* Apply signature when PJ_SAFE_POOL is set. It will move
+ * "mem" pointer forward.
+ */
+ APPLY_SIG(mem, size);
+ }
+
+ return mem;
+}
+
+static void operator_delete(pj_pool_factory *factory, void *mem, pj_size_t size)
+{
+ PJ_CHECK_STACK();
+
+ if (factory->on_block_free)
+ factory->on_block_free(factory, size);
+
+ /* Check and remove signature when PJ_SAFE_POOL is set. It will
+ * move "mem" pointer backward.
+ */
+ REMOVE_SIG(mem, size);
+
+ /* Note that when PJ_SAFE_POOL is set, the actual size of the block
+ * is size + SIG_SIZE*2.
+ */
+
+ char *p = (char*)mem;
+ delete [] p;
+}
+
+static void default_pool_callback(pj_pool_t *pool, pj_size_t size)
+{
+ PJ_CHECK_STACK();
+ PJ_UNUSED_ARG(pool);
+ PJ_UNUSED_ARG(size);
+
+ PJ_THROW(PJ_NO_MEMORY_EXCEPTION);
+}
+
+PJ_DEF_DATA(pj_pool_factory_policy) pj_pool_factory_default_policy =
+{
+ &operator_new,
+ &operator_delete,
+ &default_pool_callback,
+ 0
+};
+
+PJ_DEF(const pj_pool_factory_policy*) pj_pool_factory_get_default_policy(void)
+{
+ return &pj_pool_factory_default_policy;
+}
+
+
+#endif /* PJ_HAS_POOL_ALT_API */
+