Remove custom memory manager

core/src/fxcrt/fx_basic_memmgr.cpp

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
- 
+
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "../../include/fxcrt/fx_basic.h"
-#include "mem_int.h"
-
-void FXMEM_DestroyFoxitMgr(FXMEM_FoxitMgr* pFoxitMgr)
-{
-    if (pFoxitMgr == NULL) {
-        return;
-    }
-    CFX_MemoryMgr* p = (CFX_MemoryMgr*)pFoxitMgr;
-    if (p->m_pSystemMgr->CollectAll) {
-        p->m_pSystemMgr->CollectAll(p->m_pSystemMgr);
-    }
-    if (p->m_bReleaseMgr) {
-        p->m_pSystemMgr->Free(p->m_pSystemMgr, p, 0);
-    }
-    if (p->m_pExternalMemory) {
-        free(p->m_pExternalMemory);
-    }
-}
 #ifdef __cplusplus
 extern "C" {
 #endif
-static void* _DefAllocDebug(IFX_Allocator* pAllocator, size_t num, size_t size, FX_LPCSTR filename, int line)
+void*   FXMEM_DefaultAlloc(size_t byte_size, int flags)
 {
-    if (size == 0 || num > SIZE_MAX/size)
-        return NULL;
-
-    size = size * num; 
-    return ((FX_DefAllocator*)pAllocator)->m_pFoxitMgr->AllocDebug(size, 0, filename, line);
+    return (void*)malloc(byte_size);
 }
-static void* _DefAlloc(IFX_Allocator* pAllocator, size_t num, size_t size)
+void*   FXMEM_DefaultRealloc(void* pointer, size_t new_size, int flags)
 {
-    if (size == 0 || num > SIZE_MAX/size)
-        return NULL;
-
-    size = size * num;
-    return ((FX_DefAllocator*)pAllocator)->m_pFoxitMgr->Alloc(size, 0);
+    return realloc(pointer, new_size);
 }
-static void* _DefReallocDebug(IFX_Allocator* pAllocator, void* p, size_t new_num, size_t size, FX_LPCSTR filename, int line)
+void    FXMEM_DefaultFree(void* pointer, int flags)
 {
-    if (size == 0 || new_num > SIZE_MAX/size)
-        return NULL;
-
-    size = size * new_num;
-    return ((FX_DefAllocator*)pAllocator)->m_pFoxitMgr->ReallocDebug(p, size, 0, filename, line);
-}
-static void* _DefRealloc(IFX_Allocator* pAllocator, void* p, size_t new_num, size_t size)
-{
-    if (size == 0 || new_num > SIZE_MAX/size)
-        return NULL;
-
-    size = size * new_num;
-    return ((FX_DefAllocator*)pAllocator)->m_pFoxitMgr->Realloc(p, size, 0);
-}
-static void _DefFree(IFX_Allocator* pAllocator, void* p)
-{
-    ((FX_DefAllocator*)pAllocator)->m_pFoxitMgr->Free(p, 0);
+    free(pointer);
 }
 #ifdef __cplusplus
 }
 #endif
-void CFX_MemoryMgr::Init(FXMEM_SystemMgr* pSystemMgr)
-{
-    m_pSystemMgr = pSystemMgr;
-    IFX_Allocator &ac = m_DefAllocator.m_Allocator;
-    ac.m_Alloc = _DefAlloc;
-    ac.m_AllocDebug = _DefAllocDebug;
-    ac.m_Realloc = _DefRealloc;
-    ac.m_ReallocDebug = _DefReallocDebug;
-    ac.m_Free = _DefFree;
-    m_DefAllocator.m_pFoxitMgr = this;
-    m_pExternalMemory = NULL;
-    m_bReleaseMgr = TRUE;
-}
-void CFX_MemoryMgr::PurgeMgr()
-{
-    if (m_pSystemMgr->Purge) {
-        m_pSystemMgr->Purge(m_pSystemMgr);
-    }
-}
-void* CFX_MemoryMgr::Alloc(size_t size, int flags)
-{
-    void* p = m_pSystemMgr->Alloc(m_pSystemMgr, size, flags);
-    if (p == NULL) {
-        return NULL;
-    }
-    return p;
-}
-void* CFX_MemoryMgr::AllocDebug(size_t size, int flags, FX_LPCSTR file, int line)
-{
-    void* p = m_pSystemMgr->AllocDebug(m_pSystemMgr, size, flags, file, line);
-    if (p == NULL) {
-        return NULL;
-    }
-    return p;
-}
-void* CFX_MemoryMgr::Realloc(void* p, size_t size, int flags)
-{
-    void* p1 = m_pSystemMgr->Realloc(m_pSystemMgr, p, size, flags);
-    if (p1 == NULL) {
-        return NULL;
-    }
-    return p1;
-}
-void* CFX_MemoryMgr::ReallocDebug(void* p, size_t size, int flags, FX_LPCSTR file, int line)
-{
-    void* p1 = m_pSystemMgr->ReallocDebug(m_pSystemMgr, p, size, flags, file, line);
-    if (p1 == NULL) {
-        return NULL;
-    }
-    return p1;
-}
-void CFX_MemoryMgr::Free(void* p, int flags)
-{
-    if (p == NULL) {
-        return;
-    }
-    m_pSystemMgr->Free(m_pSystemMgr, p, flags);
-}
-CFX_MemoryMgr* g_pDefFoxitMgr = NULL;
-void* FXMEM_DefaultAlloc(size_t size, int flags)
-{
-    return g_pDefFoxitMgr->Alloc(size, flags);
-}
-void* FXMEM_DefaultAlloc2(size_t size, size_t unit, int flags)
-{
-    return g_pDefFoxitMgr->Alloc(size * unit, flags);
-}
-void* FXMEM_DefaultRealloc(void* p, size_t size, int flags)
-{
-    if (p == NULL) {
-        return FXMEM_DefaultAlloc(size, flags);
-    }
-    return g_pDefFoxitMgr->Realloc(p, size, flags);
-}
-void* FXMEM_DefaultRealloc2(void* p, size_t size, size_t unit, int flags)
-{
-    if (p == NULL) {
-        return FXMEM_DefaultAlloc2(size, unit, flags);
-    }
-    return g_pDefFoxitMgr->Realloc(p, size * unit, flags);
-}
-void* FXMEM_DefaultAllocDebug(size_t size, int flags, FX_LPCSTR file, int line)
-{
-    return g_pDefFoxitMgr->AllocDebug(size, flags, file, line);
-}
-void* FXMEM_DefaultAllocDebug2(size_t size, size_t unit, int flags, FX_LPCSTR file, int line)
-{
-    return g_pDefFoxitMgr->AllocDebug(size * unit, flags, file, line);
-}
-void* FXMEM_DefaultReallocDebug(void* p, size_t size, int flags, FX_LPCSTR file, int line)
-{
-    if (p == NULL) {
-        return FXMEM_DefaultAllocDebug(size, flags, file, line);
-    }
-    return g_pDefFoxitMgr->ReallocDebug(p, size, flags, file, line);
-}
-void* FXMEM_DefaultReallocDebug2(void* p, size_t size, size_t unit, int flags, FX_LPCSTR file, int line)
-{
-    if (p == NULL) {
-        return FXMEM_DefaultAllocDebug2(size, unit, flags, file, line);
-    }
-    return g_pDefFoxitMgr->ReallocDebug(p, size * unit, flags, file, line);
-}
-void FXMEM_DefaultFree(void* p, int flags)
-{
-    g_pDefFoxitMgr->Free(p, flags);
-}
-IFX_Allocator* FXMEM_GetDefAllocator()
-{
-    return &g_pDefFoxitMgr->m_DefAllocator.m_Allocator;
-}
-void* CFX_Object::operator new(size_t size)
-{
-    return g_pDefFoxitMgr->Alloc(size, 0);
-}
-void* CFX_Object::operator new[](size_t size)
-{
-    return g_pDefFoxitMgr->Alloc(size, 0);
-}
-void* CFX_Object::operator new[](size_t size, FX_LPCSTR file, int line)
-{
-    return g_pDefFoxitMgr->AllocDebug(size, 0, file, line);
-}
-void* CFX_Object::operator new(size_t size, FX_LPCSTR file, int line)
-{
-    return g_pDefFoxitMgr->AllocDebug(size, 0, file, line);
-}
-void CFX_Object::operator delete(void* p)
-{
-    g_pDefFoxitMgr->Free(p, 0);
-}
-void CFX_Object::operator delete[](void* p)
-{
-    g_pDefFoxitMgr->Free(p, 0);
-}
-void CFX_Object::operator delete(void* p, FX_LPCSTR file, int line)
-{
-    g_pDefFoxitMgr->Free(p, 0);
-}
-void CFX_Object::operator delete[](void* p, FX_LPCSTR file, int line)
-{
-    g_pDefFoxitMgr->Free(p, 0);
-}
-void* CFX_AllocObject::operator new(size_t size, IFX_Allocator* pAllocator, FX_LPCSTR filename, int line)
-{
-    void* p = pAllocator ? pAllocator->m_AllocDebug(pAllocator, size, 1, filename, line) :
-              g_pDefFoxitMgr->AllocDebug(size, 0, filename, line);
-    ((CFX_AllocObject*)p)->m_pAllocator = pAllocator;
-    return p;
-}
-void CFX_AllocObject::operator delete (void* p, IFX_Allocator* pAllocator, FX_LPCSTR filename, int line)
-{
-    if (pAllocator) {
-        pAllocator->m_Free(pAllocator, p);
-    } else {
-        g_pDefFoxitMgr->Free(p, 0);
-    }
-}
-void* CFX_AllocObject::operator new(size_t size, IFX_Allocator* pAllocator)
-{
-    void* p = pAllocator ? pAllocator->m_Alloc(pAllocator, size, 1) : g_pDefFoxitMgr->Alloc(size, 0);
-    ((CFX_AllocObject*)p)->m_pAllocator = pAllocator;
-    return p;
-}
-void CFX_AllocObject::operator delete(void* p)
-{
-    if (((CFX_AllocObject*)p)->m_pAllocator) {
-        (((CFX_AllocObject*)p)->m_pAllocator)->m_Free(((CFX_AllocObject*)p)->m_pAllocator, p);
-    } else {
-        g_pDefFoxitMgr->Free(p, 0);
-    }
-}
-void CFX_AllocObject::operator delete(void* p, IFX_Allocator* pAllocator)
-{
-    if (pAllocator) {
-        pAllocator->m_Free(pAllocator, p);
-    } else {
-        g_pDefFoxitMgr->Free(p, 0);
-    }
-}
-extern "C" {
-    static void* _GOPAllocDebug(IFX_Allocator* pAllocator, size_t num, size_t size, FX_LPCSTR file, int line)
-    {
-        if (size == 0 || num > SIZE_MAX/size)
-            return NULL;
-
-        size = size * num;
-        return ((CFX_GrowOnlyPool*)pAllocator)->Alloc(size);
-    }
-    static void* _GOPAlloc(IFX_Allocator* pAllocator, size_t num, size_t size)
-    {
-        if (size == 0 || num > SIZE_MAX/size)
-            return NULL;
-
-        size = size * num;
-        return ((CFX_GrowOnlyPool*)pAllocator)->Alloc(size);
-    }
-    static void* _GOPReallocDebug(IFX_Allocator* pAllocator, void* p, size_t new_num, size_t size, FX_LPCSTR file, int line)
-    {
-        if (size == 0 || new_num > SIZE_MAX/size)
-            return NULL;
-
-        size = size * new_num;
-        return ((CFX_GrowOnlyPool*)pAllocator)->Realloc(p, size);
-    }
-    static void* _GOPRealloc(IFX_Allocator* pAllocator, void* p, size_t new_num, size_t size)
-    {
-        if (size == 0 || new_num > SIZE_MAX/size)
-            return NULL;
-
-        size = size * new_num;
-        return ((CFX_GrowOnlyPool*)pAllocator)->Realloc(p, size);
-    }
-    static void _GOPFree(IFX_Allocator* pAllocator, void* p)
-    {
-    }
-};
-CFX_GrowOnlyPool::CFX_GrowOnlyPool(IFX_Allocator* pAllocator, size_t trunk_size)
+CFX_GrowOnlyPool::CFX_GrowOnlyPool(size_t trunk_size)
 {
     m_TrunkSize = trunk_size;
     m_pFirstTrunk = NULL;
-    m_pAllocator = pAllocator ? pAllocator : &g_pDefFoxitMgr->m_DefAllocator.m_Allocator;
-    m_AllocDebug = _GOPAllocDebug;
-    m_Alloc = _GOPAlloc;
-    m_ReallocDebug = _GOPReallocDebug;
-    m_Realloc = _GOPRealloc;
-    m_Free = _GOPFree;
 }
 CFX_GrowOnlyPool::~CFX_GrowOnlyPool()
 {
     FreeAll();
 }
-void CFX_GrowOnlyPool::SetAllocator(IFX_Allocator* pAllocator)
-{
-    ASSERT(m_pFirstTrunk == NULL);
-    m_pAllocator = pAllocator ? pAllocator : &g_pDefFoxitMgr->m_DefAllocator.m_Allocator;
-}
 struct _FX_GrowOnlyTrunk {
     size_t      m_Size;
     size_t      m_Allocated;
     _FX_GrowOnlyTrunk*  m_pNext;
 };
 void CFX_GrowOnlyPool::FreeAll()
 {
     _FX_GrowOnlyTrunk* pTrunk = (_FX_GrowOnlyTrunk*)m_pFirstTrunk;
     while (pTrunk) {
         _FX_GrowOnlyTrunk* pNext = pTrunk->m_pNext;
-        m_pAllocator->m_Free(m_pAllocator, pTrunk);
+        FX_Free(pTrunk);
         pTrunk = pNext;
     }
     m_pFirstTrunk = NULL;
 }
 void* CFX_GrowOnlyPool::Alloc(size_t size)
 {
     size = (size + 3) / 4 * 4;
     _FX_GrowOnlyTrunk* pTrunk = (_FX_GrowOnlyTrunk*)m_pFirstTrunk;
     while (pTrunk) {
         if (pTrunk->m_Size - pTrunk->m_Allocated >= size) {
             void* p = (FX_LPBYTE)(pTrunk + 1) + pTrunk->m_Allocated;
             pTrunk->m_Allocated += size;
             return p;
         }
         pTrunk = pTrunk->m_pNext;
     }
     size_t alloc_size = size > m_TrunkSize ? size : m_TrunkSize;
-    
-    if (alloc_size > SIZE_MAX - sizeof(_FX_GrowOnlyTrunk) )
-        return NULL;
-
-    pTrunk = (_FX_GrowOnlyTrunk*)m_pAllocator->m_Alloc(m_pAllocator, sizeof(_FX_GrowOnlyTrunk) + alloc_size, 1);
+    pTrunk = (_FX_GrowOnlyTrunk*)FX_Alloc(FX_BYTE, sizeof(_FX_GrowOnlyTrunk) + alloc_size);
     pTrunk->m_Size = alloc_size;
     pTrunk->m_Allocated = size;
     pTrunk->m_pNext = (_FX_GrowOnlyTrunk*)m_pFirstTrunk;
     m_pFirstTrunk = pTrunk;
     return pTrunk + 1;
 }