From a5fdebc5f6375078ec1763850a4ca23ec7fe6458 Mon Sep 17 00:00:00 2001
From: levine <levine@ae88bc3d-4319-0410-8dbf-d08b4c9d3795>
Date: Mon, 21 Oct 1996 21:41:34 +0000
Subject: Initial revision

---
 ace/Obstack.cpp | 119 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 119 insertions(+)
 create mode 100644 ace/Obstack.cpp

(limited to 'ace/Obstack.cpp')

diff --git a/ace/Obstack.cpp b/ace/Obstack.cpp
new file mode 100644
index 00000000000..5bd969201bb
--- /dev/null
+++ b/ace/Obstack.cpp
@@ -0,0 +1,119 @@
+// Obstack.cpp
+// $Id$
+
+#define ACE_BUILD_DLL
+#include "ace/Obstack.h"
+
+ACE_ALLOC_HOOK_DEFINE(ACE_Obstack)
+
+void
+ACE_Obstack::dump (void) const
+{
+  ACE_TRACE ("ACE_Obstack::dump");
+
+  ACE_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this));
+  ACE_DEBUG ((LM_DEBUG, "size_ = %d\n", this->size_));
+  ACE_DEBUG ((LM_DEBUG, "head_ = %x\n", this->head_));
+  ACE_DEBUG ((LM_DEBUG, "curr_ = %x\n", this->curr_));
+  ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP));
+}
+
+ACE_ALLOC_HOOK_DEFINE(ACE_Obchunk)
+
+void
+ACE_Obchunk::dump (void) const
+{
+  ACE_TRACE ("ACE_Obchunk::dump");
+
+  ACE_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this));
+  ACE_DEBUG ((LM_DEBUG, "end_ = %x\n", this->end_));
+  ACE_DEBUG ((LM_DEBUG, "cur_ = %x\n", this->cur_));
+  ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP));
+}
+
+class ACE_Obchunk *
+ACE_Obstack::new_chunk (void)
+{
+  ACE_TRACE ("ACE_Obstack::new_chunk");
+  class ACE_Obchunk *temp = (class ACE_Obchunk *) 
+    new char[sizeof (class ACE_Obchunk) + this->size_];
+
+  if (temp == 0)
+    {
+      errno = ENOMEM;
+      return 0;
+    }
+
+  temp->next_ = 0;
+  temp->end_  = temp->contents_ + this->size_;
+  temp->cur_  = temp->contents_;
+
+  return temp;
+}
+
+ACE_Obstack::ACE_Obstack (int sz)
+  : size_ (sz), 
+    head_ (0)
+{
+  ACE_TRACE ("ACE_Obstack::ACE_Obstack");
+  this->head_ = this->new_chunk ();
+  this->curr_ = this->head_;
+}
+
+ACE_Obstack::~ACE_Obstack (void)
+{
+  ACE_TRACE ("ACE_Obstack::~ACE_Obstack");
+  class ACE_Obchunk *temp = this->head_;
+
+  while (temp != 0)
+    {
+      class ACE_Obchunk *next = temp->next_;
+      temp->next_  = 0;
+      delete [] temp;
+      temp = next;
+    }
+}
+
+char *
+ACE_Obstack::copy (const char *s, 
+		   size_t len)
+{
+  ACE_TRACE ("ACE_Obstack::copy");
+  char *result;
+
+  ACE_ASSERT (this->size_ >= len + 1);
+
+  // Check whether we need to grow our chunk...
+
+  if (this->curr_->cur_ + len + 1 >= this->curr_->end_)
+    {
+      // Check whether we can just reuse previously allocated memory.
+
+      if (this->curr_->next_ == 0)
+	{
+	  this->curr_->next_ = this->new_chunk ();
+	  this->curr_ = this->curr_->next_;
+	}
+      else
+	{
+	  this->curr_ = this->curr_->next_;
+	  this->curr_->cur_ = this->curr_->contents_;
+	}
+    }
+
+  result = this->curr_->cur_;
+  ACE_OS::memcpy (result, s, len);
+  result[len] = '\0';
+  this->curr_->cur_ += (len + 1);
+  return result;
+}
+
+void 
+ACE_Obstack::release (void)
+{
+  ACE_TRACE ("ACE_Obstack::release");
+  this->curr_ = this->head_;
+  this->curr_->cur_ = this->curr_->contents_;
+}
+
+
-- 
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