From 2294f59b466070893f415da87cead18f8e2d47b2 Mon Sep 17 00:00:00 2001
From: "hp.com!davidm" <hp.com!davidm>
Date: Fri, 30 Jan 2004 00:01:24 +0000
Subject: [PATCH] Rename: src/mempool.c -> src/mi/mempool.c

}(Logical change 1.162)
---
 src/mempool.c | 205 --------------------------------------------------
 1 file changed, 205 deletions(-)
 delete mode 100644 src/mempool.c

diff --git a/src/mempool.c b/src/mempool.c
deleted file mode 100644
index 2ff2f479..00000000
--- a/src/mempool.c
+++ /dev/null
@@ -1,205 +0,0 @@
-/* libunwind - a platform-independent unwind library
-   Copyright (C) 2002-2003 Hewlett-Packard Co
-	Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
-
-This file is part of libunwind.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
-
-#include <assert.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <sys/mman.h>
-
-#include "libunwind.h"
-#include "mempool.h"
-
-#define MAX_ALIGN	(sizeof (long double))
-#define SOS_MEMORY_SIZE	16384
-
-static char sos_memory[SOS_MEMORY_SIZE];
-static char *sos_memp;
-static size_t pg_size;
-
-HIDDEN void *
-sos_alloc (size_t size)
-{
-  char *mem;
-
-#ifdef HAVE_CMPXCHG
-  char *old_mem;
-
-  size = (size + MAX_ALIGN - 1) & -MAX_ALIGN;
-  if (!sos_memp)
-    cmpxchg_ptr (&sos_memp, 0, sos_memory);
-  do
-    {
-      old_mem = sos_memp;
-
-      mem = (char *) (((unsigned long) old_mem + MAX_ALIGN - 1) & -MAX_ALIGN);
-      mem += size;
-      if (mem >= sos_memory + sizeof (sos_memory))
-	abort ();
-    }
-  while (!cmpxchg_ptr (&sos_memp, old_mem, mem));
-#else
-  static pthread_mutex_t sos_lock = PTHREAD_MUTEX_INITIALIZER;
-  sigset_t saved_sigmask;
-
-  size = (size + MAX_ALIGN - 1) & -MAX_ALIGN;
-
-  sigprocmask (SIG_SETMASK, &unwi_full_sigmask, &saved_sigmask);
-  mutex_lock(&sos_lock);
-  {
-    if (!sos_memp)
-      sos_memp = sos_memory;
-
-    mem = (char *) (((unsigned long) sos_memp + MAX_ALIGN - 1) & -MAX_ALIGN);
-    mem += size;
-    if (mem >= sos_memory + sizeof (sos_memory))
-      abort ();
-    sos_memp = mem;
-  }
-  mutex_unlock(&sos_lock);
-  sigprocmask (SIG_SETMASK, &saved_sigmask, NULL);
-#endif
-  return mem;
-}
-
-static void *
-alloc_memory (size_t size)
-{
-  /* Hopefully, mmap() goes straight through to a system call stub...  */
-  void *mem = mmap (0, size, PROT_READ | PROT_WRITE,
-		    MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
-  if (mem == MAP_FAILED)
-    return NULL;
-
-  return mem;
-}
-
-/* Must be called while holding the mempool lock. */
-
-static void
-free_object (struct mempool *pool, void *object)
-{
-  struct object *obj = object;
-
-  obj->next = pool->free_list;
-  pool->free_list = obj;
-  ++pool->num_free;
-}
-
-static void
-add_memory (struct mempool *pool, char *mem, size_t size, size_t obj_size)
-{
-  char *obj;
-
-  for (obj = mem; obj + obj_size <= mem + size; obj += obj_size)
-    free_object (pool, obj);
-}
-
-static void
-expand (struct mempool *pool)
-{
-  size_t size;
-  char *mem;
-
-  size = pool->chunk_size;
-  mem = alloc_memory (size);
-  if (!mem)
-    {
-      size = (pool->obj_size + pg_size - 1) & -pg_size;
-      mem = alloc_memory (size);
-      if (!mem)
-	{
-	  /* last chance: try to allocate one object from the SOS memory */
-	  size = pool->obj_size;
-	  mem = sos_alloc (size);
-	}
-    }
-  add_memory (pool, mem, size, pool->obj_size);
-}
-
-HIDDEN void
-mempool_init (struct mempool *pool, size_t obj_size, size_t reserve)
-{
-  if (pg_size == 0)
-    pg_size = getpagesize ();
-
-  memset (pool, 0, sizeof (*pool));
-
-  mutex_init (&pool->lock);
-
-  /* round object-size up to integer multiple of MAX_ALIGN */
-  obj_size = (obj_size + MAX_ALIGN - 1) & -MAX_ALIGN;
-
-  if (!reserve)
-    {
-      reserve = pg_size / obj_size / 2;
-      if (!reserve)
-	reserve = 16;
-    }
-
-  pool->obj_size = obj_size;
-  pool->reserve = reserve;
-  pool->chunk_size = (2*reserve*obj_size + pg_size - 1) & -pg_size;
-
-  expand (pool);
-}
-
-HIDDEN void *
-mempool_alloc (struct mempool *pool)
-{
-  sigset_t saved_sigmask;
-  struct object *obj;
-
-  sigprocmask (SIG_SETMASK, &unwi_full_sigmask, &saved_sigmask);
-  mutex_lock(&pool->lock);
-  {
-    if (pool->num_free <= pool->reserve)
-      expand (pool);
-
-    assert (pool->num_free > 0);
-
-    --pool->num_free;
-    obj = pool->free_list;
-    pool->free_list = obj->next;
-  }
-  mutex_unlock(&pool->lock);
-  sigprocmask (SIG_SETMASK, &saved_sigmask, NULL);
-  return obj;
-}
-
-HIDDEN void
-mempool_free (struct mempool *pool, void *object)
-{
-  sigset_t saved_sigmask;
-
-  sigprocmask (SIG_SETMASK, &unwi_full_sigmask, &saved_sigmask);
-  mutex_lock(&pool->lock);
-  {
-    free_object (pool, object);
-  }
-  mutex_unlock(&pool->lock);
-  sigprocmask (SIG_SETMASK, &saved_sigmask, NULL);
-}