forked from mirrors/gecko-dev
34acbb653a
First reformat with clang-format 10 # ignore-this-changeset Differential Revision: https://phabricator.services.mozilla.com/D68802
82 lines
2.6 KiB
C++
82 lines
2.6 KiB
C++
/* 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 mozilla_cxxalloc_h
|
|
#define mozilla_cxxalloc_h
|
|
|
|
/*
|
|
* We implement the default operators new/delete as part of
|
|
* libmozalloc, replacing their definitions in libstdc++. The
|
|
* operator new* definitions in libmozalloc will never return a NULL
|
|
* pointer.
|
|
*
|
|
* Each operator new immediately below returns a pointer to memory
|
|
* that can be delete'd by any of
|
|
*
|
|
* (1) the matching infallible operator delete immediately below
|
|
* (2) the matching system |operator delete(void*, std::nothrow)|
|
|
* (3) the matching system |operator delete(void*) noexcept(false)|
|
|
*
|
|
* NB: these are declared |noexcept(false)|, though they will never
|
|
* throw that exception. This declaration is consistent with the rule
|
|
* that |::operator new() noexcept(false)| will never return NULL.
|
|
*
|
|
* NB: mozilla::fallible can be used instead of std::nothrow.
|
|
*/
|
|
|
|
#ifndef MOZALLOC_EXPORT_NEW
|
|
# define MOZALLOC_EXPORT_NEW MFBT_API
|
|
#endif
|
|
|
|
MOZALLOC_EXPORT_NEW void* operator new(size_t size) noexcept(false) {
|
|
return moz_xmalloc(size);
|
|
}
|
|
|
|
MOZALLOC_EXPORT_NEW void* operator new(size_t size,
|
|
const std::nothrow_t&) noexcept(true) {
|
|
return malloc_impl(size);
|
|
}
|
|
|
|
MOZALLOC_EXPORT_NEW void* operator new[](size_t size) noexcept(false) {
|
|
return moz_xmalloc(size);
|
|
}
|
|
|
|
MOZALLOC_EXPORT_NEW void* operator new[](size_t size,
|
|
const std::nothrow_t&) noexcept(true) {
|
|
return malloc_impl(size);
|
|
}
|
|
|
|
MOZALLOC_EXPORT_NEW void operator delete(void* ptr) noexcept(true) {
|
|
return free_impl(ptr);
|
|
}
|
|
|
|
MOZALLOC_EXPORT_NEW void operator delete(void* ptr,
|
|
const std::nothrow_t&) noexcept(true) {
|
|
return free_impl(ptr);
|
|
}
|
|
|
|
MOZALLOC_EXPORT_NEW void operator delete[](void* ptr) noexcept(true) {
|
|
return free_impl(ptr);
|
|
}
|
|
|
|
MOZALLOC_EXPORT_NEW void operator delete[](
|
|
void* ptr, const std::nothrow_t&) noexcept(true) {
|
|
return free_impl(ptr);
|
|
}
|
|
|
|
#if defined(XP_WIN)
|
|
// We provide the global sized delete overloads unconditionally because the
|
|
// MSVC runtime headers do, despite compiling with /Zc:sizedDealloc-
|
|
MOZALLOC_EXPORT_NEW void operator delete(void* ptr,
|
|
size_t /*size*/) noexcept(true) {
|
|
return free_impl(ptr);
|
|
}
|
|
|
|
MOZALLOC_EXPORT_NEW void operator delete[](void* ptr,
|
|
size_t /*size*/) noexcept(true) {
|
|
return free_impl(ptr);
|
|
}
|
|
#endif
|
|
|
|
#endif /* mozilla_cxxalloc_h */
|