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Diffstat (limited to 'cores/xinput/new.cpp')
-rw-r--r-- | cores/xinput/new.cpp | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/cores/xinput/new.cpp b/cores/xinput/new.cpp new file mode 100644 index 0000000..7ca4931 --- /dev/null +++ b/cores/xinput/new.cpp @@ -0,0 +1,117 @@ +/* + Copyright (c) 2014 Arduino. All right reserved. + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + See the GNU Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +*/ + +#include "new.h" + +// The C++ spec dictates that allocation failure should cause the +// (non-nothrow version of the) operator new to throw an exception. +// Since we expect to have exceptions disabled, it would be more +// appropriate (and probably standards-compliant) to terminate instead. +// Historically failure causes null to be returned, but this define +// allows switching to more robust terminating behaviour (that might +// become the default at some point in the future). Note that any code +// that wants null to be returned can (and should) use the nothrow +// versions of the new statement anyway and is unaffected by this. +// #define NEW_TERMINATES_ON_FAILURE + +namespace std { + // Defined in abi.cpp + void terminate(); + + const nothrow_t nothrow; +} + +static void * new_helper(std::size_t size) { + // Even zero-sized allocations should return a unique pointer, but + // malloc does not guarantee this + if (size == 0) + size = 1; + return malloc(size); +} + +void * operator new(std::size_t size) { + void *res = new_helper(size); +#if defined(NEW_TERMINATES_ON_FAILURE) + if (!res) + std::terminate(); +#endif + return res; +} +void * operator new[](std::size_t size) { + return operator new(size); +} + +void * operator new(std::size_t size, const std::nothrow_t tag) noexcept { +#if defined(NEW_TERMINATES_ON_FAILURE) + // Cannot call throwing operator new as standard suggests, so call + // new_helper directly then + return new_helper(size); +#else + return operator new(size); +#endif +} +void * operator new[](std::size_t size, const std::nothrow_t& tag) noexcept { +#if defined(NEW_TERMINATES_ON_FAILURE) + // Cannot call throwing operator new[] as standard suggests, so call + // malloc directly then + return new_helper(size); +#else + return operator new[](size); +#endif +} + +void * operator new(std::size_t size, void *place) noexcept { + // Nothing to do + (void)size; // unused + return place; +} +void * operator new[](std::size_t size, void *place) noexcept { + return operator new(size, place); +} + +void operator delete(void * ptr) noexcept { + free(ptr); +} +void operator delete[](void * ptr) noexcept { + operator delete(ptr); +} + +#if __cplusplus >= 201402L +void operator delete(void* ptr, std::size_t size) noexcept { + operator delete(ptr); +} +void operator delete[](void * ptr, std::size_t size) noexcept { + operator delete[](ptr); +} +#endif // __cplusplus >= 201402L + +void operator delete(void* ptr, const std::nothrow_t& tag) noexcept { + operator delete(ptr); +} +void operator delete[](void* ptr, const std::nothrow_t& tag) noexcept { + operator delete[](ptr); +} + +void operator delete(void* ptr, void* place) noexcept { + (void)ptr; (void)place; // unused + // Nothing to do +} +void operator delete[](void* ptr, void* place) noexcept { + (void)ptr; (void)place; // unused + // Nothing to do +} |