thodg/libgit2/src/unix/map.c

• Show log

  Commit

• Hash : 7697e541
  Author :
  Date : 2013-12-11T15:02:20
  

  Test cancel from indexer progress callback This adds tests that try canceling an indexer operation from within the progress callback. After writing the tests, I wanted to run this under valgrind and had a number of errors in that situation because mmap wasn't working. I added a CMake option to force emulation of mmap and consolidated the Amiga-specific code into that new place (so we don't actually need separate Amiga code now, just have to turn on -DNO_MMAP). Additionally, I made the indexer code propagate error codes more reliably than it used to.

Download

• src/unix/map.c

• /*
   * Copyright (C) the libgit2 contributors. All rights reserved.
   *
   * This file is part of libgit2, distributed under the GNU GPL v2 with
   * a Linking Exception. For full terms see the included COPYING file.
   */
  #include <git2/common.h>
  
  #if !defined(GIT_WIN32) && !defined(NO_MMAP)
  
  #include "map.h"
  #include <sys/mman.h>
  #include <errno.h>
  
  int p_mmap(git_map *out, size_t len, int prot, int flags, int fd, git_off_t offset)
  {
  	int mprot = 0;
  	int mflag = 0;
  
  	GIT_MMAP_VALIDATE(out, len, prot, flags);
  
  	out->data = NULL;
  	out->len = 0;
  
  	if (prot & GIT_PROT_WRITE)
  		mprot = PROT_WRITE;
  	else if (prot & GIT_PROT_READ)
  		mprot = PROT_READ;
  
  	if ((flags & GIT_MAP_TYPE) == GIT_MAP_SHARED)
  		mflag = MAP_SHARED;
  	else if ((flags & GIT_MAP_TYPE) == GIT_MAP_PRIVATE)
  		mflag = MAP_PRIVATE;
  	else
  		mflag = MAP_SHARED;
  
  	out->data = mmap(NULL, len, mprot, mflag, fd, offset);
  
  	if (!out->data || out->data == MAP_FAILED) {
  		giterr_set(GITERR_OS, "Failed to mmap. Could not write data");
  		return -1;
  	}
  
  	out->len = len;
  
  	return 0;
  }
  
  int p_munmap(git_map *map)
  {
  	assert(map != NULL);
  	munmap(map->data, map->len);
  
  	return 0;
  }
  
  #endif
  
  

Download