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Posted to cvs@httpd.apache.org by dr...@hyperreal.org on 1999/10/20 22:22:06 UTC

cvs commit: apache-2.0/src/lib/apr/mmap/unix Makefile.in mmap.c mmap_h.h

dreid       99/10/20 13:22:05

  Added:       src/lib/apr/mmap/beos Makefile.in mmap.c mmap_h.h
               src/lib/apr/mmap/unix Makefile.in mmap.c mmap_h.h
  Log:
  The beginning of mmap support for APR.  Still early days but what's here
  has been tested and seems to work.  Next is the ability to read/send an
  mmap'd file.
  
  Revision  Changes    Path
  1.1                  apache-2.0/src/lib/apr/mmap/beos/Makefile.in
  
  Index: Makefile.in
  ===================================================================
  #CFLAGS=$(OPTIM) $(CFLAGS1) $(EXTRA_CFLAGS)
  #LIBS=$(EXTRA_LIBS) $(LIBS1)
  #INCLUDES=$(INCLUDES1) $(INCLUDES0) $(EXTRA_INCLUDES)
  #LDFLAGS=$(LDFLAGS1) $(EXTRA_LDFLAGS)
  
  RM=@RM@
  CC=@CC@
  RANLIB=@RANLIB@
  CFLAGS=@CFLAGS@ @OPTIM@
  LIBS=@LIBS@
  LDFLAGS=@LDFLAGS@ $(LIBS)
  INCDIR=../../inc
  INCDIR1=../../include
  INCLUDES=-I$(INCDIR) -I$(INCDIR1) -I.
  
  LIB=libmmap.a
  
  OBJS=mmap.o
  
  .c.o:
  	$(CC) $(CFLAGS) -c $(INCLUDES) $<
  
  all: $(LIB)
  
  clean:
  	$(RM) -f *.o *.a *.so
  
  distclean: clean
  	-$(RM) -f Makefile
  
  $(OBJS): Makefile
  
  $(LIB): $(OBJS)
  	$(RM) -f $@
  	$(AR) cr $@ $(OBJS)
  	$(RANLIB) $@
  
  #
  # We really don't expect end users to use this rule.  It works only with
  # gcc, and rebuilds Makefile.tmpl.  You have to re-run Configure after
  # using it.
  #
  depend:
  	cp Makefile.in Makefile.in.bak \
  	    && sed -ne '1,/^# DO NOT REMOVE/p' Makefile.in > Makefile.new \
  	    && gcc -MM $(INCLUDES) $(CFLAGS) *.c >> Makefile.new \
  	    && sed -e '1,$$s: $(INCDIR)/: $$(INCDIR)/:g' \
  	           -e '1,$$s: $(OSDIR)/: $$(OSDIR)/:g' Makefile.new \
  		> Makefile.in \
  	    && rm Makefile.new
  
  # DO NOT REMOVE
  
  
  
  1.1                  apache-2.0/src/lib/apr/mmap/beos/mmap.c
  
  Index: mmap.c
  ===================================================================
  /* ====================================================================
   * Copyright (c) 1999 The Apache Group.  All rights reserved.
   *
   * 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. All advertising materials mentioning features or use of this
   *    software must display the following acknowledgment:
   *    "This product includes software developed by the Apache Group
   *    for use in the Apache HTTP server project (http://www.apache.org/)."
   *
   * 4. The names "Apache Server" and "Apache Group" must not be used to
   *    endorse or promote products derived from this software without
   *    prior written permission. For written permission, please contact
   *    apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache"
   *    nor may "Apache" appear in their names without prior written
   *    permission of the Apache Group.
   *
   * 6. Redistributions of any form whatsoever must retain the following
   *    acknowledgment:
   *    "This product includes software developed by the Apache Group
   *    for use in the Apache HTTP server project (http://www.apache.org/)."
   *
   * THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``AS IS'' AND ANY
   * EXPRESSED 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 APACHE GROUP OR
   * ITS 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.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Group.
   * For more information on the Apache Group and the Apache HTTP server
   * project, please see <http://www.apache.org/>.
   *
   */
  
  #include "mmap_h.h"
  #include "apr_mmap.h"
  #include "apr_general.h"
  #include "apr_portable.h"
  #include "apr_lib.h"
  #include <kernel/OS.h>
  #include <errno.h>
  #include <string.h>
  #include <stdio.h>
  
  ap_status_t mmap_cleanup(void *themmap)
  {
      struct mmap_t *mm = themmap;
      int rv;
      rv = delete_area(mm->area);
  
      if (rv == 0) {
          mm->mm = 0;
          mm->area = -1;
          return APR_SUCCESS;
      }
      else
          return errno;
  }
  
  ap_status_t ap_mmap_create(struct mmap_t **new, const char *fname,
       ap_context_t *cont)
  {
      struct stat st;
      int fd;
      void *mm;
      struct mmap_t *next;
      area_id aid;
      char *areaname;
      uint32 size;
      int len;               
  
      /* We really should check to see that we haven't already mmap'd
       * this file before.  Cycling the linked list will allow this.
       */
  
      (*new) = (struct mmap_t *)ap_palloc(cont, sizeof(struct mmap_t));
      
      if (stat(fname, &st) == -1) { 
          /* we couldn't stat the file...probably doesn't exist! */
          return APR_ENOFILE;
      }
      if ((st.st_mode & S_IFMT) != S_IFREG) {
          /* oh dear, we're only doing regular files at present... */
          return APR_EBADF;
      } 
      size = ((st.st_size -1) / B_PAGE_SIZE) + 1;
  
      if ((fd = open(fname, O_RDONLY, 0)) == -1) {
          return APR_EBADF;
      }
  
      /* generate a unique name for this area */
      len = strlen(fname) > 22 ? 22 : strlen(fname);
      areaname = malloc(sizeof(char) * 32);
      strncpy(areaname, "beos_mmap:\0", 11);
      strncat(areaname, fname + (strlen(fname)-len), len);
      
      aid = create_area(areaname, mm, B_ANY_ADDRESS, size * B_PAGE_SIZE, 
          B_FULL_LOCK, B_READ_AREA|B_WRITE_AREA);
      free(areaname);
      if (aid >= B_NO_ERROR)
          read(fd, mm, st.st_size);    
      
      close (fd);
      if (aid < B_NO_ERROR) {
          /* we failed to get an mmap'd file... */
          return APR_ENOMEM;
      }  
  
      (*new)->filename = ap_pstrdup(cont, fname);
      (*new)->mm = mm;
      (*new)->sinfo = st;
      (*new)->size = st.st_size;
      (*new)->area = aid;
      (*new)->cntxt = cont;
             
      /* register the cleanup... */ 
      ap_register_cleanup((*new)->cntxt, (void*)(*new), mmap_cleanup,
               ap_null_cleanup);
  
      return APR_SUCCESS;
  }
  
  ap_status_t ap_mmap_delete(struct mmap_t *mmap)
  {
      ap_status_t rv;
      if (mm->area == -1)
          return APR_ENOENT;
           
      if ((rv = mmap_cleanup(mmap)) == APR_SUCCESS) {
          ap_kill_cleanup(mmap->cntxt, mmap, mmap_cleanup);
          return APR_SUCCESS;
      }
      return rv;
  }
  
  
  
  1.1                  apache-2.0/src/lib/apr/mmap/beos/mmap_h.h
  
  Index: mmap_h.h
  ===================================================================
  /* ====================================================================
   * Copyright (c) 1999 The Apache Group.  All rights reserved.
   *
   * 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. All advertising materials mentioning features or use of this
   *    software must display the following acknowledgment:
   *    "This product includes software developed by the Apache Group
   *    for use in the Apache HTTP server project (http://www.apache.org/)."
   *
   * 4. The names "Apache Server" and "Apache Group" must not be used to
   *    endorse or promote products derived from this software without
   *    prior written permission. For written permission, please contact
   *    apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache"
   *    nor may "Apache" appear in their names without prior written
   *    permission of the Apache Group.
   *
   * 6. Redistributions of any form whatsoever must retain the following
   *    acknowledgment:
   *    "This product includes software developed by the Apache Group
   *    for use in the Apache HTTP server project (http://www.apache.org/)."
   *
   * THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``AS IS'' AND ANY
   * EXPRESSED 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 APACHE GROUP OR
   * ITS 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.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Group.
   * For more information on the Apache Group and the Apache HTTP server
   * project, please see <http://www.apache.org/>.
   *
   */
  
  #ifndef MMAP_H_H
  #define MMAP_H_H
  
  #include <sys/stat.h>
  #include <kernel/OS.h>
  #include "apr_general.h"
  #include "apr_mmap.h"
  #include "apr_errno.h"
  
  struct mmap_t {
      ap_context_t *cntxt;
      char *filename;  /* the full path to the file */
      struct stat sinfo;
      area_id area;
      void *mm;
      size_t size;
  };
  
  ap_status_t mmap_cleanup(void *);
  
  #endif  /* ! FILE_IO_H */
  
  
  
  
  1.1                  apache-2.0/src/lib/apr/mmap/unix/Makefile.in
  
  Index: Makefile.in
  ===================================================================
  #CFLAGS=$(OPTIM) $(CFLAGS1) $(EXTRA_CFLAGS)
  #LIBS=$(EXTRA_LIBS) $(LIBS1)
  #INCLUDES=$(INCLUDES1) $(INCLUDES0) $(EXTRA_INCLUDES)
  #LDFLAGS=$(LDFLAGS1) $(EXTRA_LDFLAGS)
  
  RM=@RM@
  CC=@CC@
  RANLIB=@RANLIB@
  CFLAGS=@CFLAGS@ @OPTIM@
  LIBS=@LIBS@
  LDFLAGS=@LDFLAGS@ $(LIBS)
  INCDIR=../../inc
  INCDIR1=../../include
  INCLUDES=-I$(INCDIR) -I$(INCDIR1) -I.
  
  LIB=libmmap.a
  
  OBJS=mmap.o
  
  .c.o:
  	$(CC) $(CFLAGS) -c $(INCLUDES) $<
  
  all: $(LIB)
  
  clean:
  	$(RM) -f *.o *.a *.so
  
  distclean: clean
  	-$(RM) -f Makefile
  
  $(OBJS): Makefile
  
  $(LIB): $(OBJS)
  	$(RM) -f $@
  	$(AR) cr $@ $(OBJS)
  	$(RANLIB) $@
  
  #
  # We really don't expect end users to use this rule.  It works only with
  # gcc, and rebuilds Makefile.tmpl.  You have to re-run Configure after
  # using it.
  #
  depend:
  	cp Makefile.in Makefile.in.bak \
  	    && sed -ne '1,/^# DO NOT REMOVE/p' Makefile.in > Makefile.new \
  	    && gcc -MM $(INCLUDES) $(CFLAGS) *.c >> Makefile.new \
  	    && sed -e '1,$$s: $(INCDIR)/: $$(INCDIR)/:g' \
  	           -e '1,$$s: $(OSDIR)/: $$(OSDIR)/:g' Makefile.new \
  		> Makefile.in \
  	    && rm Makefile.new
  
  # DO NOT REMOVE
  
  
  
  1.1                  apache-2.0/src/lib/apr/mmap/unix/mmap.c
  
  Index: mmap.c
  ===================================================================
  /* ====================================================================
   * Copyright (c) 1999 The Apache Group.  All rights reserved.
   *
   * 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. All advertising materials mentioning features or use of this
   *    software must display the following acknowledgment:
   *    "This product includes software developed by the Apache Group
   *    for use in the Apache HTTP server project (http://www.apache.org/)."
   *
   * 4. The names "Apache Server" and "Apache Group" must not be used to
   *    endorse or promote products derived from this software without
   *    prior written permission. For written permission, please contact
   *    apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache"
   *    nor may "Apache" appear in their names without prior written
   *    permission of the Apache Group.
   *
   * 6. Redistributions of any form whatsoever must retain the following
   *    acknowledgment:
   *    "This product includes software developed by the Apache Group
   *    for use in the Apache HTTP server project (http://www.apache.org/)."
   *
   * THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``AS IS'' AND ANY
   * EXPRESSED 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 APACHE GROUP OR
   * ITS 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.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Group.
   * For more information on the Apache Group and the Apache HTTP server
   * project, please see <http://www.apache.org/>.
   *
   */
  
  #include "mmap_h.h"
  #include "apr_mmap.h"
  #include "apr_general.h"
  #include "apr_portable.h"
  #include "apr_lib.h"
  #include <sys/mman.h>
  #include <errno.h>
  #include <string.h>
  #include <stdio.h>
  
  ap_status_t mmap_cleanup(void *themmap)
  {
      struct mmap_t *mm = themmap;
      int rv;
      rv = munmap(mm->mm, mm->size);
  
      if (rv == 0) {
          mm->mm = (caddr_t)-1;
          return APR_SUCCESS;
      }
      else
          return errno;
  }
  
  ap_status_t ap_mmap_create(ap_mmap_t **new, const char * fname,
       ap_context_t *cont)
  {
      struct stat st;
      int fd;
      caddr_t mm;
      ap_mmap_t next;
      
      /* before we go blindly in and create an mmap, we should probably check
       * to make sure we haven't already mmap'd the file.
       * I'll add this once I've got the basics working.
       */
      
      (*new) = (struct mmap_t *)ap_palloc(cont, sizeof(struct mmap_t));
      
      if (stat(fname, &st) == -1) {
          /* we couldn't stat the file...probably doesn't exist! */
          return APR_ENOFILE;
      }
      if ((st.st_mode & S_IFMT) != S_IFREG) {
          /* oh dear, we're only doing regular files at present... */
          return APR_EBADF;
      } 
      if ((fd = open(fname, O_RDONLY, 0)) == -1) {
          return APR_EBADF;
      }
      mm = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, fd ,0);
      close (fd);
      if (mm == (caddr_t)-1) {
          /* we failed to get an mmap'd file... */
          return APR_ENOMEM;
      }
      (*new)->filename = ap_pstrdup(cont, fname);
      (*new)->mm = mm;
      (*new)->sinfo = st;
      (*new)->size = st.st_size;
      (*new)->cntxt = cont;
             
      /* register the cleanup... */
      ap_register_cleanup((*new)->cntxt, (void*)(*new), mmap_cleanup,
               ap_null_cleanup);
      return APR_SUCCESS;
  }
  
  ap_status_t ap_mmap_delete(struct mmap_t *mmap)
  {
      ap_status_t rv;
  
      if (mmap->mm == (caddr_t) -1)
          return APR_ENOENT;
        
      if ((rv = mmap_cleanup(mmap)) == APR_SUCCESS) {
          ap_kill_cleanup(mmap->cntxt, mmap, mmap_cleanup);
          return APR_SUCCESS;
      }
      return rv;
  }
  
  
  
  1.1                  apache-2.0/src/lib/apr/mmap/unix/mmap_h.h
  
  Index: mmap_h.h
  ===================================================================
  /* ====================================================================
   * Copyright (c) 1999 The Apache Group.  All rights reserved.
   *
   * 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. All advertising materials mentioning features or use of this
   *    software must display the following acknowledgment:
   *    "This product includes software developed by the Apache Group
   *    for use in the Apache HTTP server project (http://www.apache.org/)."
   *
   * 4. The names "Apache Server" and "Apache Group" must not be used to
   *    endorse or promote products derived from this software without
   *    prior written permission. For written permission, please contact
   *    apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache"
   *    nor may "Apache" appear in their names without prior written
   *    permission of the Apache Group.
   *
   * 6. Redistributions of any form whatsoever must retain the following
   *    acknowledgment:
   *    "This product includes software developed by the Apache Group
   *    for use in the Apache HTTP server project (http://www.apache.org/)."
   *
   * THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``AS IS'' AND ANY
   * EXPRESSED 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 APACHE GROUP OR
   * ITS 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.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Group.
   * For more information on the Apache Group and the Apache HTTP server
   * project, please see <http://www.apache.org/>.
   *
   */
  
  #ifndef MMAP_H_H
  #define MMAP_H_H
  
  #include <sys/stat.h>
  #include "apr_general.h"
  #include "apr_mmap.h"
  #include "apr_errno.h"
  
  struct mmap_t {
      ap_context_t *cntxt;
      char *filename;  /* the full path to the file */
      struct stat sinfo;
      void *mm;
      size_t size;
  };
  
  ap_status_t mmap_cleanup(void *);
  
  #endif  /* ! FILE_IO_H */
  
  
  
  

Re: cvs commit: apache-2.0/src/lib/apr/mmap/unix Makefile.in mmap.c mmap_h.h

Posted by David Reid <ab...@dial.pipex.com>.
I see no problem with that.

david
----- Original Message -----
From: Bill Stoddard <st...@raleigh.ibm.com>
To: <ne...@apache.org>
Sent: 21 October 1999 05:17
Subject: Re: cvs commit: apache-2.0/src/lib/apr/mmap/unix Makefile.in mmap.c
mmap_h.h


> >
> >   ap_status_t ap_mmap_create(struct mmap_t **new, const char *fname,
> >        ap_context_t *cont)
> >   {
> >
> clip
> >
> >       if (stat(fname, &st) == -1)
>
> >           /* we couldn't stat the file...probably doesn't exist! */
> >           return APR_ENOFILE;
> >       }
> This will be a big performance hit if we use this function in place of the
> mmap code already in http_core.c. We need a 'create' function that takes a
> handle (or ap_file_t)  of an already opened file.
>
> Bill
>
>


Re: cvs commit: apache-2.0/src/lib/apr/mmap/unix Makefile.in mmap.c mmap_h.h

Posted by Bill Stoddard <st...@raleigh.ibm.com>.
>
>   ap_status_t ap_mmap_create(struct mmap_t **new, const char *fname,
>        ap_context_t *cont)
>   {
>
clip
>
>       if (stat(fname, &st) == -1)

>           /* we couldn't stat the file...probably doesn't exist! */
>           return APR_ENOFILE;
>       }
This will be a big performance hit if we use this function in place of the
mmap code already in http_core.c. We need a 'create' function that takes a
handle (or ap_file_t)  of an already opened file.

Bill