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-rw-r--r--src/VBox/Runtime/r3/alloc.cpp317
1 files changed, 317 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r3/alloc.cpp b/src/VBox/Runtime/r3/alloc.cpp
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+++ b/src/VBox/Runtime/r3/alloc.cpp
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+/* $Id: alloc.cpp $ */
+/** @file
+ * IPRT - Memory Allocation.
+ */
+
+/*
+ * Copyright (C) 2006-2023 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program 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, in version 3 of the
+ * License.
+ *
+ * This program 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+
+/*********************************************************************************************************************************
+* Defined Constants And Macros *
+*********************************************************************************************************************************/
+#if defined(RTMEM_WRAP_TO_EF_APIS) && !defined(RTMEM_NO_WRAP_TO_EF_APIS)
+# undef RTMEM_WRAP_TO_EF_APIS
+# define RTALLOC_USE_EFENCE 1
+#endif
+
+/*#define RTMEMALLOC_USE_TRACKER*/
+/* Don't enable the tracker when building the minimal IPRT. */
+#ifdef RT_MINI
+# undef RTMEMALLOC_USE_TRACKER
+#endif
+
+#if defined(RTMEMALLOC_USE_TRACKER) && defined(RTALLOC_USE_EFENCE)
+# error "Cannot define both RTMEMALLOC_USE_TRACKER and RTALLOC_USE_EFENCE!"
+#endif
+
+
+/*********************************************************************************************************************************
+* Header Files *
+*********************************************************************************************************************************/
+#include "alloc-ef.h"
+#include <iprt/mem.h>
+
+#include <iprt/asm.h>
+#include <iprt/assert.h>
+#ifdef RTMEMALLOC_USE_TRACKER
+# include <iprt/memtracker.h>
+#endif
+#include <iprt/param.h>
+#include <iprt/string.h>
+#include "internal/mem.h"
+
+#include <stdlib.h>
+
+#undef RTMemTmpAlloc
+#undef RTMemTmpAllocTag
+#undef RTMemTmpAllocZ
+#undef RTMemTmpAllocZTag
+#undef RTMemTmpFree
+#undef RTMemTmpFreeZ
+#undef RTMemAlloc
+#undef RTMemAllocTag
+#undef RTMemAllocZ
+#undef RTMemAllocZTag
+#undef RTMemAllocVar
+#undef RTMemAllocVarTag
+#undef RTMemAllocZVar
+#undef RTMemAllocZVarTag
+#undef RTMemRealloc
+#undef RTMemReallocTag
+#undef RTMemFree
+#undef RTMemFreeZ
+#undef RTMemDup
+#undef RTMemDupTag
+#undef RTMemDupEx
+#undef RTMemDupExTag
+
+#undef RTALLOC_USE_EFENCE
+
+
+#ifdef IPRT_WITH_GCC_SANITIZER
+/**
+ * Checks if @a pszTag is a leak tag.
+ *
+ * @returns true if leak tag, false if not.
+ * @param pszTag Tage to inspect.
+ */
+DECLINLINE(bool) rtMemIsLeakTag(const char *pszTag)
+{
+ char ch = *pszTag;
+ if (ch != 'w')
+ { /* likely */ }
+ else
+ return pszTag[1] == 'i'
+ && pszTag[2] == 'l'
+ && pszTag[3] == 'l'
+ && pszTag[4] == '-'
+ && pszTag[5] == 'l'
+ && pszTag[6] == 'e'
+ && pszTag[7] == 'a'
+ && pszTag[8] == 'k';
+ if (ch != 'm')
+ return false;
+ return pszTag[1] == 'm'
+ && pszTag[2] == 'a'
+ && pszTag[3] == 'y'
+ && pszTag[4] == '-'
+ && pszTag[5] == 'l'
+ && pszTag[6] == 'e'
+ && pszTag[7] == 'a'
+ && pszTag[8] == 'k';
+}
+#endif /* IPRT_WITH_GCC_SANITIZER */
+
+
+RTDECL(void *) RTMemTmpAllocTag(size_t cb, const char *pszTag) RT_NO_THROW_DEF
+{
+ return RTMemAllocTag(cb, pszTag);
+}
+
+
+RTDECL(void *) RTMemTmpAllocZTag(size_t cb, const char *pszTag) RT_NO_THROW_DEF
+{
+ return RTMemAllocZTag(cb, pszTag);
+}
+
+
+RTDECL(void) RTMemTmpFree(void *pv) RT_NO_THROW_DEF
+{
+ RTMemFree(pv);
+}
+
+
+RTDECL(void) RTMemTmpFreeZ(void *pv, size_t cb) RT_NO_THROW_DEF
+{
+ RTMemFreeZ(pv, cb);
+}
+
+
+RTDECL(void *) RTMemAllocTag(size_t cb, const char *pszTag) RT_NO_THROW_DEF
+{
+#ifdef RTALLOC_USE_EFENCE
+ void *pv = rtR3MemAlloc("Alloc", RTMEMTYPE_RTMEMALLOC, cb, cb, pszTag, ASMReturnAddress(), NULL, 0, NULL);
+
+#else /* !RTALLOC_USE_EFENCE */
+
+ AssertMsg(cb, ("Allocating ZERO bytes is really not a good idea! Good luck with the next assertion!\n"));
+# ifdef RTMEMALLOC_USE_TRACKER
+ void *pv = RTMemTrackerHdrAlloc(malloc(cb + sizeof(RTMEMTRACKERHDR)), cb, pszTag, ASMReturnAddress(), RTMEMTRACKERMETHOD_ALLOC);
+# else
+ void *pv = malloc(cb); NOREF(pszTag);
+# endif
+ AssertMsg(pv, ("malloc(%#zx) failed!!!\n", cb));
+ AssertMsg( cb < RTMEM_ALIGNMENT
+ || !((uintptr_t)pv & (RTMEM_ALIGNMENT - 1))
+ || ( (cb & RTMEM_ALIGNMENT) + ((uintptr_t)pv & RTMEM_ALIGNMENT)) == RTMEM_ALIGNMENT
+ , ("pv=%p RTMEM_ALIGNMENT=%#x\n", pv, RTMEM_ALIGNMENT));
+#endif /* !RTALLOC_USE_EFENCE */
+#ifdef IPRT_WITH_GCC_SANITIZER
+ if (rtMemIsLeakTag(pszTag))
+ __lsan_ignore_object(pv);
+#endif
+ return pv;
+}
+
+
+RTDECL(void *) RTMemAllocZTag(size_t cb, const char *pszTag) RT_NO_THROW_DEF
+{
+#ifdef RTALLOC_USE_EFENCE
+ void *pv = rtR3MemAlloc("AllocZ", RTMEMTYPE_RTMEMALLOCZ, cb, cb, pszTag, ASMReturnAddress(), NULL, 0, NULL);
+
+#else /* !RTALLOC_USE_EFENCE */
+
+ AssertMsg(cb, ("Allocating ZERO bytes is really not a good idea! Good luck with the next assertion!\n"));
+
+# ifdef RTMEMALLOC_USE_TRACKER
+ void *pv = RTMemTrackerHdrAlloc(calloc(1, cb + sizeof(RTMEMTRACKERHDR)), cb, pszTag, ASMReturnAddress(), RTMEMTRACKERMETHOD_ALLOCZ);
+#else
+ void *pv = calloc(1, cb); NOREF(pszTag);
+#endif
+ AssertMsg(pv, ("calloc(1,%#zx) failed!!!\n", cb));
+ AssertMsg( cb < RTMEM_ALIGNMENT
+ || !((uintptr_t)pv & (RTMEM_ALIGNMENT - 1))
+ || ( (cb & RTMEM_ALIGNMENT) + ((uintptr_t)pv & RTMEM_ALIGNMENT)) == RTMEM_ALIGNMENT
+ , ("pv=%p RTMEM_ALIGNMENT=%#x\n", pv, RTMEM_ALIGNMENT));
+#endif /* !RTALLOC_USE_EFENCE */
+#ifdef IPRT_WITH_GCC_SANITIZER
+ if (rtMemIsLeakTag(pszTag))
+ __lsan_ignore_object(pv);
+#endif
+ return pv;
+}
+
+
+RTDECL(void *) RTMemAllocVarTag(size_t cbUnaligned, const char *pszTag) RT_NO_THROW_DEF
+{
+ size_t cbAligned;
+ if (cbUnaligned >= 16)
+ cbAligned = RT_ALIGN_Z(cbUnaligned, 16);
+ else
+ cbAligned = RT_ALIGN_Z(cbUnaligned, sizeof(void *));
+#ifdef RTALLOC_USE_EFENCE
+ void *pv = rtR3MemAlloc("AllocVar", RTMEMTYPE_RTMEMALLOC, cbUnaligned, cbAligned, pszTag, ASMReturnAddress(), NULL, 0, NULL);
+#else
+ void *pv = RTMemAllocTag(cbAligned, pszTag);
+#endif
+ return pv;
+}
+
+
+RTDECL(void *) RTMemAllocZVarTag(size_t cbUnaligned, const char *pszTag) RT_NO_THROW_DEF
+{
+ size_t cbAligned;
+ if (cbUnaligned >= 16)
+ cbAligned = RT_ALIGN_Z(cbUnaligned, 16);
+ else
+ cbAligned = RT_ALIGN_Z(cbUnaligned, sizeof(void *));
+#ifdef RTALLOC_USE_EFENCE
+ void *pv = rtR3MemAlloc("AllocZVar", RTMEMTYPE_RTMEMALLOCZ, cbUnaligned, cbAligned, pszTag, ASMReturnAddress(), NULL, 0, NULL);
+#else
+ void *pv = RTMemAllocZTag(cbAligned, pszTag);
+#endif
+ return pv;
+}
+
+
+RTDECL(void *) RTMemReallocTag(void *pvOld, size_t cbNew, const char *pszTag) RT_NO_THROW_DEF
+{
+#ifdef RTALLOC_USE_EFENCE
+ void *pv = rtR3MemRealloc("Realloc", RTMEMTYPE_RTMEMREALLOC, pvOld, cbNew, pszTag, ASMReturnAddress(), NULL, 0, NULL);
+
+#else /* !RTALLOC_USE_EFENCE */
+# ifdef RT_STRICT
+ const uintptr_t uOld = (uintptr_t)pvOld; /* overzealous gcc 12 complains it's used over realloc */
+# endif
+
+# ifdef RTMEMALLOC_USE_TRACKER
+ void *pvRealOld = RTMemTrackerHdrReallocPrep(pvOld, 0, pszTag, ASMReturnAddress());
+ size_t cbRealNew = cbNew || !pvRealOld ? cbNew + sizeof(RTMEMTRACKERHDR) : 0;
+ void *pvNew = realloc(pvRealOld, cbRealNew);
+ void *pv = RTMemTrackerHdrReallocDone(pvNew, cbNew, pvOld, pszTag, ASMReturnAddress());
+# else
+ void *pv = realloc(pvOld, cbNew); NOREF(pszTag);
+# endif
+ AssertMsg(pv || !cbNew, ("realloc(%p, %#zx) failed!!!\n", uOld, cbNew));
+ AssertMsg( cbNew < RTMEM_ALIGNMENT
+ || !((uintptr_t)pv & (RTMEM_ALIGNMENT - 1))
+ || ( (cbNew & RTMEM_ALIGNMENT) + ((uintptr_t)pv & RTMEM_ALIGNMENT)) == RTMEM_ALIGNMENT
+ , ("pv=%p RTMEM_ALIGNMENT=%#x\n", pv, RTMEM_ALIGNMENT));
+#endif /* !RTALLOC_USE_EFENCE */
+ return pv;
+}
+
+
+RTDECL(void) RTMemFree(void *pv) RT_NO_THROW_DEF
+{
+ if (pv)
+#ifdef RTALLOC_USE_EFENCE
+ rtR3MemFree("Free", RTMEMTYPE_RTMEMFREE, pv, 0, ASMReturnAddress(), NULL, 0, NULL);
+#else
+# ifdef RTMEMALLOC_USE_TRACKER
+ pv = RTMemTrackerHdrFree(pv, 0, NULL, ASMReturnAddress(), RTMEMTRACKERMETHOD_FREE);
+# endif
+ free(pv);
+#endif
+}
+
+
+RTDECL(void) RTMemFreeZ(void *pv, size_t cb) RT_NO_THROW_DEF
+{
+ if (pv)
+ {
+#ifdef RTALLOC_USE_EFENCE
+ rtR3MemFree("Free", RTMEMTYPE_RTMEMFREEZ, pv, cb, ASMReturnAddress(), NULL, 0, NULL);
+#else
+# ifdef RTMEMALLOC_USE_TRACKER
+ pv = RTMemTrackerHdrFree(pv, cb, NULL, ASMReturnAddress(), RTMEMTRACKERMETHOD_FREE);
+# endif
+ RT_BZERO(pv, cb);
+ free(pv);
+#endif
+ }
+}
+
+
+
+DECLHIDDEN(void *) rtMemBaseAlloc(size_t cb)
+{
+ Assert(cb > 0 && cb < _1M);
+ return malloc(cb);
+}
+
+
+DECLHIDDEN(void) rtMemBaseFree(void *pv)
+{
+ free(pv);
+}
+
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