Resync new repository with old repo r5166

git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5153 42af7a65-404d-4744-a932-0658087f49c3
2026-10-17 03:03:33 +08:00 · 2012-09-17 18:18:44 +00:00
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+/****************************************************************************
+ * netutils/thttpd/thttpd_alloc.c
+ *
+ *   Copyright (C) 2009 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+#include <stdlib.h>
+#include <debug.h>
+#include <errno.h>
+
+#include "config.h"
+#include "thttpd_alloc.h"
+
+#ifdef CONFIG_THTTPD
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#ifndef MAX
+#  define MAX(a,b) ((a) > (b) ? (a) : (b))
+#endif
+
+#ifndef MIN
+#  define MIN(a,b) ((a) < (b) ? (a) : (b))
+#endif
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+#ifdef CONFIG_THTTPD_MEMDEBUG
+static int    g_nallocations = 0;
+static int    g_nfreed       = 0;
+static size_t g_allocated    = 0;
+#endif
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/* Generate debugging statistics */
+
+#ifdef CONFIG_THTTPD_MEMDEBUG
+void httpd_memstats(void)
+{
+  static struct mallinfo mm;
+
+  ndbg("%d allocations (%lu bytes), %d freed\n", g_nallocations, (unsigned long)g_allocated, g_nfreed);
+
+  /* Get the current memory usage */
+
+#ifdef CONFIG_CAN_PASS_STRUCTS
+  mm = mallinfo();
+#else
+  (void)mallinfo(&mm);
+#endif
+  ndbg("arena: %08x ordblks: %08x mxordblk: %08x uordblks: %08x fordblks: %08x\n",
+       mm.arena, mm.ordblks, mm.mxordblk, mm.uordblks, mm.fordblks);
+}
+#endif
+
+/****************************************************************************
+ * Global Functions
+ ****************************************************************************/
+
+#ifdef CONFIG_THTTPD_MEMDEBUG
+FAR void *httpd_malloc(size_t nbytes)
+{
+  void *ptr = malloc(nbytes);
+  if (!ptr)
+    {
+      ndbg("Allocation of %d bytes failed\n", nbytes);
+    }
+  else
+    {
+      nvdbg("Allocated %d bytes at %p\n", nbytes, ptr);
+      g_nallocations++;
+      g_allocated += nbytes;
+    }
+  httpd_memstats();
+  return ptr;
+}
+#endif
+
+#ifdef CONFIG_THTTPD_MEMDEBUG
+FAR void *httpd_realloc(FAR void *oldptr, size_t oldsize, size_t newsize)
+{
+  void *ptr = realloc(oldptr, newsize);
+  if (!ptr)
+    {
+      ndbg("Re-allocation from %d to %d bytes failed\n",
+           oldsize, newsize);
+    }
+  else
+    {
+      nvdbg("Re-allocated form %d to %d bytes (from %p to %p)\n",
+            oldsize, newsize, oldptr, ptr);
+      g_allocated += (newsize - oldsize);
+    }
+  httpd_memstats();
+  return ptr;
+}
+#endif
+
+#ifdef CONFIG_THTTPD_MEMDEBUG
+void httpd_free(FAR void *ptr)
+{
+  free(ptr);
+  g_nfreed++;
+  nvdbg("Freed memory at %p\n", ptr);
+  httpd_memstats();
+}
+#endif
+
+#ifdef CONFIG_THTTPD_MEMDEBUG
+FAR char *httpd_strdup(const char *str)
+{
+  FAR char *newstr = strdup(str);
+  if (!newstr)
+    {
+      ndbg("strdup of %s failed\n", str);
+    }
+  else
+    {
+      nvdbg("strdup'ed %s\n", str);
+      g_nallocations++;
+      g_allocated += (strlen(str)+1);
+    }
+  httpd_memstats();
+  return newstr;
+}
+#endif
+
+/* Helpers to implement dynamically allocated strings */
+
+void httpd_realloc_str(char **pstr, size_t *maxsize, size_t size)
+{
+  size_t oldsize;
+  if (*maxsize == 0)
+    {
+      *maxsize = MAX(CONFIG_THTTPD_MINSTRSIZE, size + CONFIG_THTTPD_REALLOCINCR);
+      *pstr    = NEW(char, *maxsize + 1);
+    }
+  else if (size > *maxsize)
+    {
+      oldsize  = *maxsize;
+      *maxsize = MAX(oldsize * 2, size * 5 / 4);
+      *pstr    = httpd_realloc(*pstr, oldsize + 1, *maxsize + 1);
+    }
+  else
+    {
+      return;
+    }
+
+  if (!*pstr)
+    {
+      ndbg("out of memory reallocating a string to %d bytes\n", *maxsize);
+      exit(1);
+    }
+}
+
+#endif /* CONFIG_THTTPD */