thodg/libgit2/src/alloc.c

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• Hash : 305e801a
  Author :
  Date : 2018-10-21T09:52:32
  

  util: allow callers to reset custom allocators Provide a utility to reset custom allocators back to their default. This is particularly useful for testing.

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• src/alloc.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 "alloc.h"
  
  #if defined(GIT_MSVC_CRTDBG)
  # include "win32/w32_crtdbg_stacktrace.h"
  #else
  # include "stdalloc.h"
  #endif
  
  git_allocator git__allocator;
  
  static int setup_default_allocator(void)
  {
  #if defined(GIT_MSVC_CRTDBG)
  	return git_win32_crtdbg_init_allocator(&git__allocator);
  #else
  	return git_stdalloc_init_allocator(&git__allocator);
  #endif
  }
  
  int git_allocator_global_init(void)
  {
  	/*
  	 * We don't want to overwrite any allocator which has been set before
  	 * the init function is called.
  	 */
  	if (git__allocator.gmalloc != NULL)
  		return 0;
  
  	return setup_default_allocator();
  }
  
  int git_allocator_setup(git_allocator *allocator)
  {
  	if (!allocator)
  		return setup_default_allocator();
  
  	memcpy(&git__allocator, allocator, sizeof(*allocator));
  	return 0;
  }
  
  #if !defined(GIT_MSVC_CRTDBG)
  int git_win32_crtdbg_init_allocator(git_allocator *allocator)
  {
  	GIT_UNUSED(allocator);
  	giterr_set(GIT_EINVALID, "crtdbg memory allocator not available");
  	return -1;
  }
  #endif
  

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