/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozjemalloc_h

#define mozjemalloc_h

#include "mozjemalloc_types.h"

#include "mozilla/MacroArgs.h"

// Macro helpers

#define MACRO_CALL(a, b) a b

// Can't use macros recursively, so we need another one doing the same as above.

#define MACRO_CALL2(a, b) a b

#define ARGS_HELPER(name, ...)                                                 \

  MACRO_CALL2(MOZ_PASTE_PREFIX_AND_ARG_COUNT(name, ##__VA_ARGS__),             \

              (__VA_ARGS__))

#define TYPED_ARGS0()

#define TYPED_ARGS1(t1) t1 arg1

#define TYPED_ARGS2(t1, t2) TYPED_ARGS1(t1), t2 arg2

#define TYPED_ARGS3(t1, t2, t3) TYPED_ARGS2(t1, t2), t3 arg3

#define ARGS0()

#define ARGS1(t1) arg1

#define ARGS2(t1, t2) ARGS1(t1), arg2

#define ARGS3(t1, t2, t3) ARGS2(t1, t2), arg3

#ifdef MOZ_MEMORY

// Generic interface exposing the whole public allocator API

// This facilitates the implementation of things like replace-malloc.

// Note: compilers are expected to be able to optimize out `this`.

template<typename T>

struct Allocator : public T

{

#define MALLOC_DECL(name, return_type, ...)                                    \

  static return_type name(__VA_ARGS__);

#include "malloc_decls.h"

};

// The MozJemalloc allocator

struct MozJemallocBase

{

};

typedef Allocator<MozJemallocBase> MozJemalloc;

#ifdef MOZ_REPLACE_MALLOC

// The replace-malloc allocator

struct ReplaceMallocBase

{

};

typedef Allocator<ReplaceMallocBase> ReplaceMalloc;

typedef ReplaceMalloc DefaultMalloc;

#else

typedef MozJemalloc DefaultMalloc;

#endif

#endif // MOZ_MEMORY

// Dummy implementation of the moz_arena_* API, falling back to a given

// implementation of the base allocator.

template<typename T>

struct DummyArenaAllocator

{

  static arena_id_t moz_create_arena_with_params(arena_params_t*) { return 0; }

  static void moz_dispose_arena(arena_id_t) {}

#define MALLOC_DECL(name, return_type, ...)                                    \

  static return_type moz_arena_##name(arena_id_t,                              \

                                      ARGS_HELPER(TYPED_ARGS, ##__VA_ARGS__))  \

  {                                                                            \

    return T::name(ARGS_HELPER(ARGS, ##__VA_ARGS__));                          \

  }

DummyArenaAllocator<SystemMalloc>::moz_arena_malloc(unsigned long, unsigned long)

Line

Count

Source

77

4.88M

  {                                                                            \

78

4.88M

    return T::name(ARGS_HELPER(ARGS, ##__VA_ARGS__));                          \

79

4.88M

  }

DummyArenaAllocator<SystemMalloc>::moz_arena_calloc(unsigned long, unsigned long, unsigned long)

Line

Count

Source

77

1.55k

  {                                                                            \

78

1.55k

    return T::name(ARGS_HELPER(ARGS, ##__VA_ARGS__));                          \

79

1.55k

  }

DummyArenaAllocator<SystemMalloc>::moz_arena_realloc(unsigned long, void*, unsigned long)

Line

Count

Source

77

2.78k

  {                                                                            \

78

2.78k

    return T::name(ARGS_HELPER(ARGS, ##__VA_ARGS__));                          \

79

2.78k

  }

Unexecuted instantiation: DummyArenaAllocator<SystemMalloc>::moz_arena_free(unsigned long, void*)

Unexecuted instantiation: DummyArenaAllocator<SystemMalloc>::moz_arena_memalign(unsigned long, unsigned long, unsigned long)

#define MALLOC_FUNCS MALLOC_FUNCS_MALLOC_BASE

#include "malloc_decls.h"

};

#endif