1 files changed, 118 insertions, 0 deletions
diff --git a/ACE/ace/Sbrk_Memory_Pool.h b/ACE/ace/Sbrk_Memory_Pool.h
new file mode 100644
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+++ b/ACE/ace/Sbrk_Memory_Pool.h
@@ -0,0 +1,118 @@
+// -*- C++ -*-
+
+//=============================================================================
+/**
+ *  @file     Sbrk_Memory_Pool.h
+ *
+ *  $Id$
+ *
+ *  @author Dougls C. Schmidt <schmidt@cs.wustl.edu>
+ *  @author Prashant Jain <pjain@cs.wustl.edu>
+ */
+//=============================================================================
+
+#ifndef ACE_SBRK_MEMORY_POOL_H
+#define ACE_SBRK_MEMORY_POOL_H
+
+#include /**/ "ace/pre.h"
+
+#include /**/ "ace/ACE_export.h"
+
+#if !defined (ACE_LACKS_PRAGMA_ONCE)
+# pragma once
+#endif /* ACE_LACKS_PRAGMA_ONCE */
+
+#if !defined (ACE_LACKS_SBRK)
+
+#include "ace/ACE.h"
+#include "ace/os_include/sys/os_mman.h"
+
+
+ACE_BEGIN_VERSIONED_NAMESPACE_DECL
+
+/**
+ * @class ACE_Sbrk_Memory_Pool_Options
+ *
+ * @brief Helper class for Sbrk Memory Pool constructor options.
+ *
+ * This should be a nested class, but that breaks too many
+ * compilers.
+ */
+class ACE_Export ACE_Sbrk_Memory_Pool_Options
+{
+};
+
+/**
+ * @class ACE_Sbrk_Memory_Pool
+ *
+ * @brief Make a memory pool that is based on <sbrk(2)>.
+ */
+class ACE_Export ACE_Sbrk_Memory_Pool
+{
+public:
+  typedef ACE_Sbrk_Memory_Pool_Options OPTIONS;
+
+  /// Initialize the pool.
+  ACE_Sbrk_Memory_Pool (const ACE_TCHAR *backing_store_name = 0,
+                        const OPTIONS *options = 0);
+
+  virtual ~ACE_Sbrk_Memory_Pool (void);
+
+  // = Implementor operations.
+  /// Ask system for initial chunk of local memory.
+  virtual void *init_acquire (size_t nbytes,
+                              size_t &rounded_bytes,
+                              int &first_time);
+
+  /// Acquire at least @a nbytes from the memory pool. @a rounded_bytes is
+  /// the actual number of bytes allocated.
+  virtual void *acquire (size_t nbytes,
+                         size_t &rounded_bytes);
+
+  /// Instruct the memory pool to release all of its resources.
+  virtual int release (int destroy = 1);
+
+  /**
+   * Sync @a len bytes of the memory region to the backing store
+   * starting at @c this->base_addr_.  If @a len == -1 then sync the
+   * whole region.
+   */
+  virtual int sync (ssize_t len = -1, int flags = MS_SYNC);
+
+  /// Sync @a len bytes of the memory region to the backing store
+  /// starting at @a addr.
+  virtual int sync (void *addr, size_t len, int flags = MS_SYNC);
+
+  /**
+   * Change the protection of the pages of the mapped region to @a prot
+   * starting at @c this->base_addr_ up to @a len bytes.  If @a len == -1
+   * then change protection of all pages in the mapped region.
+   */
+  virtual int protect (ssize_t len = -1, int prot = PROT_RDWR);
+
+  /// Change the protection of the pages of the mapped region to @a prot
+  /// starting at @a addr up to @a len bytes.
+  virtual int protect (void *addr, size_t len, int prot = PROT_RDWR);
+
+  /// Dump the state of an object.
+  virtual void dump (void) const;
+
+  /// Return the base address of this memory pool, 0 if base_addr
+  /// never changes.
+  virtual void *base_addr (void) const;
+
+  /// Declare the dynamic allocation hooks.
+  ACE_ALLOC_HOOK_DECLARE;
+
+protected:
+  /// Implement the algorithm for rounding up the request to an
+  /// appropriate chunksize.
+  virtual size_t round_up (size_t nbytes);
+};
+
+ACE_END_VERSIONED_NAMESPACE_DECL
+
+#endif /* !ACE_LACKS_SBRK */
+
+#include /**/ "ace/post.h"
+#endif /* ACE_SBRK_MEMORY_POOL_H */