/* Copyright (C) 2009, 2011 Free Software Foundation, Inc. Contributed by Richard Henderson . This file is part of the GNU Transactional Memory Library (libitm). Libitm is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. Libitm 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 General Public License for more details. Under Section 7 of GPL version 3, you are granted additional permissions described in the GCC Runtime Library Exception, version 3.1, as published by the Free Software Foundation. You should have received a copy of the GNU General Public License and a copy of the GCC Runtime Library Exception along with this program; see the files COPYING3 and COPYING.RUNTIME respectively. If not, see . */ #include "libitm_i.h" using namespace GTM; /* Mangling the names by hand requires that we know how size_t is handled. We've gotten the letter from autoconf, now substitute it into the names. Everything below uses X as a placeholder for clarity. */ #define S1(x,y) x##y #define S(x,y) S1(x,y) #define _ZnwX S(_Znw,MANGLE_SIZE_T) #define _ZnaX S(_Zna,MANGLE_SIZE_T) #define _ZnwXRKSt9nothrow_t S(S(_Znw,MANGLE_SIZE_T),RKSt9nothrow_t) #define _ZnaXRKSt9nothrow_t S(S(_Zna,MANGLE_SIZE_T),RKSt9nothrow_t) #define _ZGTtnwX S(_ZGTtnw,MANGLE_SIZE_T) #define _ZGTtnaX S(_ZGTtna,MANGLE_SIZE_T) #define _ZGTtnwXRKSt9nothrow_t S(S(_ZGTtnw,MANGLE_SIZE_T),RKSt9nothrow_t) #define _ZGTtnaXRKSt9nothrow_t S(S(_ZGTtna,MANGLE_SIZE_T),RKSt9nothrow_t) /* Everything from libstdc++ is weak, to avoid requiring that library to be linked into plain C applications using libitm.so. */ extern "C" { extern void *_ZnwX (size_t) __attribute__((weak)); extern void _ZdlPv (void *) __attribute__((weak)); extern void *_ZnaX (size_t) __attribute__((weak)); extern void _ZdaPv (void *) __attribute__((weak)); typedef const struct nothrow_t { } *c_nothrow_p; extern void *_ZnwXRKSt9nothrow_t (size_t, c_nothrow_p) __attribute__((weak)); extern void _ZdlPvRKSt9nothrow_t (void *, c_nothrow_p) __attribute__((weak)); extern void *_ZnaXRKSt9nothrow_t (size_t, c_nothrow_p) __attribute__((weak)); extern void _ZdaPvRKSt9nothrow_t (void *, c_nothrow_p) __attribute__((weak)); #ifdef __osf__ /* Really: !HAVE_WEAKDEF */ void * _ZnaXRKSt9nothrow_t (size_t, c_nothrow_p) { return NULL; } #endif /* __osf__ */ /* Wrap the delete nothrow symbols for usage with a single argument. Perhaps should have a configure type check for this, because the std::nothrow_t reference argument is unused (empty class), and most targets don't actually need that second argument. So we _could_ invoke these functions as if they were a single argument free. */ static void del_opnt (void *ptr) { _ZdlPvRKSt9nothrow_t (ptr, NULL); } static void del_opvnt (void *ptr) { _ZdaPvRKSt9nothrow_t (ptr, NULL); } /* Wrap: operator new (std::size_t sz) */ void * _ZGTtnwX (size_t sz) { void *r = _ZnwX (sz); if (r) gtm_thr()->record_allocation (r, _ZdlPv); return r; } /* Wrap: operator new (std::size_t sz, const std::nothrow_t&) */ void * _ZGTtnwXRKSt9nothrow_t (size_t sz, c_nothrow_p nt) { void *r = _ZnwXRKSt9nothrow_t (sz, nt); if (r) gtm_thr()->record_allocation (r, del_opnt); return r; } /* Wrap: operator new[] (std::size_t sz) */ void * _ZGTtnaX (size_t sz) { void *r = _ZnaX (sz); if (r) gtm_thr()->record_allocation (r, _ZdaPv); return r; } /* Wrap: operator new[] (std::size_t sz, const std::nothrow_t& nothrow) */ void * _ZGTtnaXRKSt9nothrow_t (size_t sz, c_nothrow_p nt) { void *r = _ZnaXRKSt9nothrow_t (sz, nt); if (r) gtm_thr()->record_allocation (r, del_opvnt); return r; } /* Wrap: operator delete(void* ptr) */ void _ZGTtdlPv (void *ptr) { if (ptr) gtm_thr()->forget_allocation (ptr, _ZdlPv); } /* Wrap: operator delete (void *ptr, const std::nothrow_t&) */ void _ZGTtdlPvRKSt9nothrow_t (void *ptr, c_nothrow_p nt UNUSED) { if (ptr) gtm_thr()->forget_allocation (ptr, del_opnt); } /* Wrap: operator delete[] (void *ptr) */ void _ZGTtdaPv (void *ptr) { if (ptr) gtm_thr()->forget_allocation (ptr, _ZdaPv); } /* Wrap: operator delete[] (void *ptr, const std::nothrow_t&) */ void _ZGTtdaPvRKSt9nothrow_t (void *ptr, c_nothrow_p nt UNUSED) { if (ptr) gtm_thr()->forget_allocation (ptr, del_opvnt); } } // extern "C"