thodg/libgit2/src/alloc.c

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• Hash : e316b0d3
  Author :
  Date : 2020-05-15T11:47:09
  

  runtime: move init/shutdown into the "runtime" Provide a mechanism for system components to register for initialization and shutdown of the libgit2 runtime.

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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"
  #include "runtime.h"
  
  #include "allocators/stdalloc.h"
  #include "allocators/win32_crtdbg.h"
  
  #if defined(GIT_MSVC_CRTDBG)
  # include "win32/w32_stack.h"
  # include "win32/w32_crtdbg_stacktrace.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
  }
  
  #if defined(GIT_MSVC_CRTDBG)
  static void allocator_global_shutdown(void)
  {
  	git_win32__crtdbg_stacktrace_cleanup();
  	git_win32__stack_cleanup();
  }
  #endif
  
  int git_allocator_global_init(void)
  {
  #if defined(GIT_MSVC_CRTDBG)
  	git_win32__crtdbg_stacktrace_init();
  	git_win32__stack_init();
  
  	if (git_runtime_shutdown_register(allocator_global_shutdown) < 0)
  		return -1;
  #endif
  
  	/*
  	 * 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;
  }
  

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