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libgralloc: use proper types and type casts

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- Use proper types for pointers
- Resolve compiler errors
- handle proper type casts
- remove unused variables

Change-Id: I628ebe174485d30abadea4ca40b67f9aab1a0652
This commit is contained in:
Arun Kumar K.R
2014-01-21 21:47:41 -08:00
parent 0bee628a02
commit 6c85f050b2
11 changed files with 99 additions and 83 deletions
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6
libgralloc/alloc_controller.cpp
View File

@@ -1,5 +1,5 @@
/*
* Copyright (c) 2011-2012, The Linux Foundation. All rights reserved.
* Copyright (c) 2011-2014, The Linux Foundation. All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
@@ -428,7 +428,7 @@ size_t getSize(int format, int width, int height, const int alignedw,
}
size = alignedw*alignedh +
(ALIGN(alignedw/2, 16) * (alignedh/2))*2;
size = ALIGN(size, 4096);
size = ALIGN(size, (size_t)4096);
break;
case HAL_PIXEL_FORMAT_YCbCr_420_SP:
case HAL_PIXEL_FORMAT_YCrCb_420_SP:
@@ -577,7 +577,7 @@ int alloc_buffer(private_handle_t **pHnd, int w, int h, int format, int usage)
private_handle_t* hnd = new private_handle_t(data.fd, data.size,
data.allocType, 0, format,
alignedw, alignedh);
hnd->base = (int) data.base;
hnd->base = (uintptr_t) data.base;
hnd->offset = data.offset;
hnd->gpuaddr = 0;
*pHnd = hnd;

5
libgralloc/fb_priv.h
View File

@@ -1,6 +1,6 @@
/*
* Copyright (C) 2008 The Android Open Source Project
* Copyright (c) 2012, The Linux Foundation. All rights reserved.
* Copyright (c) 2012-2014, The Linux Foundation. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -41,7 +41,7 @@ struct private_module_t {
uint32_t fbFormat;
uint32_t flags;
uint32_t numBuffers;
uint32_t bufferMask;
size_t bufferMask;
pthread_mutex_t lock;
private_handle_t *currentBuffer;
struct fb_var_screeninfo info;
@@ -51,7 +51,6 @@ struct private_module_t {
float ydpi;
float fps;
uint32_t swapInterval;
uint32_t currentOffset;
};

29
libgralloc/framebuffer.cpp
View File

@@ -1,6 +1,6 @@
/*
* Copyright (C) 2008 The Android Open Source Project
* Copyright (c) 2010-2012 The Linux Foundation. All rights reserved.
* Copyright (c) 2010-2014 The Linux Foundation. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -72,7 +72,6 @@ static int fb_setSwapInterval(struct framebuffer_device_t* dev,
if (property_interval >= 0)
interval = property_interval;
fb_context_t* ctx = (fb_context_t*)dev;
private_module_t* m = reinterpret_cast<private_module_t*>(
dev->common.module);
if (interval < dev->minSwapInterval || interval > dev->maxSwapInterval)
@@ -90,7 +89,7 @@ static int fb_post(struct framebuffer_device_t* dev, buffer_handle_t buffer)
(const_cast<native_handle_t*>(buffer));
const size_t offset = hnd->base - m->framebuffer->base;
m->info.activate = FB_ACTIVATE_VBL;
m->info.yoffset = offset / m->finfo.line_length;
m->info.yoffset = (int)(offset / m->finfo.line_length);
if (ioctl(m->framebuffer->fd, FBIOPUT_VSCREENINFO, &m->info) == -1) {
ALOGE("%s: FBIOPUT_VSCREENINFO for primary failed, str: %s",
__FUNCTION__, strerror(errno));
@@ -102,6 +101,9 @@ static int fb_post(struct framebuffer_device_t* dev, buffer_handle_t buffer)
static int fb_compositionComplete(struct framebuffer_device_t* dev)
{
// TODO: Properly implement composition complete callback
if(!dev) {
return -1;
}
glFinish();
return 0;
@@ -202,7 +204,7 @@ int mapFrameBufferLocked(struct private_module_t* module)
}
//adreno needs 4k aligned offsets. Max hole size is 4096-1
int size = roundUpToPageSize(info.yres * info.xres *
size_t size = roundUpToPageSize(info.yres * info.xres *
(info.bits_per_pixel/8));
/*
@@ -224,13 +226,13 @@ int mapFrameBufferLocked(struct private_module_t* module)
//consider the included hole by 4k alignment
uint32_t line_length = (info.xres * info.bits_per_pixel / 8);
info.yres_virtual = (size * numberOfBuffers) / line_length;
info.yres_virtual = (uint32_t) ((size * numberOfBuffers) / line_length);
uint32_t flags = PAGE_FLIP;
if (info.yres_virtual < ((size * 2) / line_length) ) {
// we need at least 2 for page-flipping
info.yres_virtual = size / line_length;
info.yres_virtual = (int)(size / line_length);
flags &= ~PAGE_FLIP;
ALOGW("page flipping not supported (yres_virtual=%d, requested=%d)",
info.yres_virtual, info.yres*2);
@@ -244,12 +246,13 @@ int mapFrameBufferLocked(struct private_module_t* module)
if (int(info.width) <= 0 || int(info.height) <= 0) {
// the driver doesn't return that information
// default to 160 dpi
info.width = ((info.xres * 25.4f)/160.0f + 0.5f);
info.height = ((info.yres * 25.4f)/160.0f + 0.5f);
info.width = (uint32_t)(((float)(info.xres) * 25.4f)/160.0f + 0.5f);
info.height = (uint32_t)(((float)(info.yres) * 25.4f)/160.0f + 0.5f);
}
float xdpi = (info.xres * 25.4f) / info.width;
float ydpi = (info.yres * 25.4f) / info.height;
float xdpi = ((float)(info.xres) * 25.4f) / (float)info.width;
float ydpi = ((float)(info.yres) * 25.4f) / (float)info.height;
#ifdef MSMFB_METADATA_GET
struct msmfb_metadata metadata;
memset(&metadata, 0 , sizeof(metadata));
@@ -259,7 +262,7 @@ int mapFrameBufferLocked(struct private_module_t* module)
close(fd);
return -errno;
}
float fps = metadata.data.panel_frame_rate;
float fps = (float)metadata.data.panel_frame_rate;
#else
//XXX: Remove reserved field usage on all baselines
//The reserved[3] field is used to store FPS by the driver.
@@ -320,7 +323,6 @@ int mapFrameBufferLocked(struct private_module_t* module)
* map the framebuffer
*/
int err;
module->numBuffers = info.yres_virtual / info.yres;
module->bufferMask = 0;
//adreno needs page aligned offsets. Align the fbsize to pagesize.
@@ -336,9 +338,8 @@ int mapFrameBufferLocked(struct private_module_t* module)
close(fd);
return -errno;
}
module->framebuffer->base = intptr_t(vaddr);
module->framebuffer->base = uintptr_t(vaddr);
memset(vaddr, 0, fbSize);
module->currentOffset = 0;
//Enable vsync
int enable = 1;
ioctl(module->framebuffer->fd, MSMFB_OVERLAY_VSYNC_CTRL,

32
libgralloc/gpu.cpp
View File

@@ -1,6 +1,6 @@
/*
* Copyright (C) 2010 The Android Open Source Project
* Copyright (c) 2011-2013 The Linux Foundation. All rights reserved.
* Copyright (c) 2011-2014 The Linux Foundation. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -70,13 +70,13 @@ int gpu_context_t::gralloc_alloc_buffer(size_t size, int usage,
/* force 1MB alignment selectively for secure buffers, MDP5 onwards */
#ifdef MDSS_TARGET
if (usage & GRALLOC_USAGE_PROTECTED) {
data.align = ALIGN(data.align, SZ_1M);
data.align = ALIGN((int) data.align, SZ_1M);
size = ALIGN(size, data.align);
}
#endif
data.size = size;
data.pHandle = (unsigned int) pHandle;
data.pHandle = (uintptr_t) pHandle;
err = mAllocCtrl->allocate(data, usage);
if (!err) {
@@ -148,13 +148,13 @@ int gpu_context_t::gralloc_alloc_buffer(size_t size, int usage,
}
flags |= data.allocType;
int eBaseAddr = int(eData.base) + eData.offset;
uintptr_t eBaseAddr = (uintptr_t)(eData.base) + eData.offset;
private_handle_t *hnd = new private_handle_t(data.fd, size, flags,
bufferType, format, width, height, eData.fd, eData.offset,
eBaseAddr);
hnd->offset = data.offset;
hnd->base = int(data.base) + data.offset;
hnd->base = (uintptr_t)(data.base) + data.offset;
hnd->gpuaddr = 0;
*pHandle = hnd;
@@ -182,7 +182,7 @@ void gpu_context_t::getGrallocInformationFromFormat(int inputFormat,
}
}
int gpu_context_t::gralloc_alloc_framebuffer_locked(size_t size, int usage,
int gpu_context_t::gralloc_alloc_framebuffer_locked(int usage,
buffer_handle_t* pHandle)
{
private_module_t* m = reinterpret_cast<private_module_t*>(common.module);
@@ -197,7 +197,7 @@ int gpu_context_t::gralloc_alloc_framebuffer_locked(size_t size, int usage,
return -EINVAL;
}
const uint32_t bufferMask = m->bufferMask;
const size_t bufferMask = m->bufferMask;
const uint32_t numBuffers = m->numBuffers;
size_t bufferSize = m->finfo.line_length * m->info.yres;
@@ -219,7 +219,7 @@ int gpu_context_t::gralloc_alloc_framebuffer_locked(size_t size, int usage,
}
// create a "fake" handle for it
intptr_t vaddr = intptr_t(m->framebuffer->base);
uintptr_t vaddr = uintptr_t(m->framebuffer->base);
private_handle_t* hnd = new private_handle_t(
dup(m->framebuffer->fd), bufferSize,
private_handle_t::PRIV_FLAGS_USES_PMEM |
@@ -236,18 +236,18 @@ int gpu_context_t::gralloc_alloc_framebuffer_locked(size_t size, int usage,
vaddr += bufferSize;
}
hnd->base = vaddr;
hnd->offset = vaddr - intptr_t(m->framebuffer->base);
hnd->offset = vaddr - uintptr_t(m->framebuffer->base);
*pHandle = hnd;
return 0;
}
int gpu_context_t::gralloc_alloc_framebuffer(size_t size, int usage,
int gpu_context_t::gralloc_alloc_framebuffer(int usage,
buffer_handle_t* pHandle)
{
private_module_t* m = reinterpret_cast<private_module_t*>(common.module);
pthread_mutex_lock(&m->lock);
int err = gralloc_alloc_framebuffer_locked(size, usage, pHandle);
int err = gralloc_alloc_framebuffer_locked(usage, pHandle);
pthread_mutex_unlock(&m->lock);
return err;
}
@@ -299,7 +299,7 @@ int gpu_context_t::alloc_impl(int w, int h, int format, int usage,
int err = 0;
if(useFbMem) {
err = gralloc_alloc_framebuffer(size, usage, pHandle);
err = gralloc_alloc_framebuffer(usage, pHandle);
} else {
err = gralloc_alloc_buffer(size, usage, pHandle, bufferType,
grallocFormat, alignedw, alignedh);
@@ -317,8 +317,8 @@ int gpu_context_t::free_impl(private_handle_t const* hnd) {
private_module_t* m = reinterpret_cast<private_module_t*>(common.module);
if (hnd->flags & private_handle_t::PRIV_FLAGS_FRAMEBUFFER) {
const size_t bufferSize = m->finfo.line_length * m->info.yres;
int index = (hnd->base - m->framebuffer->base) / bufferSize;
m->bufferMask &= ~(1<<index);
size_t index = (hnd->base - m->framebuffer->base) / bufferSize;
m->bufferMask &= ~(1LU<<index);
} else {
terminateBuffer(&m->base, const_cast<private_handle_t*>(hnd));
@@ -328,9 +328,9 @@ int gpu_context_t::free_impl(private_handle_t const* hnd) {
if(err)
return err;
// free the metadata space
unsigned long size = ROUND_UP_PAGESIZE(sizeof(MetaData_t));
size_t size = ROUND_UP_PAGESIZE(sizeof(MetaData_t));
err = memalloc->free_buffer((void*)hnd->base_metadata,
(size_t) size, hnd->offset_metadata,
size, hnd->offset_metadata,
hnd->fd_metadata);
if (err)
return err;

6
libgralloc/gpu.h
View File

@@ -1,6 +1,6 @@
/*
* Copyright (C) 2008 The Android Open Source Project
* Copyright (c) 2011-2012, The Linux Foundation. All rights reserved.
* Copyright (c) 2011-2014, The Linux Foundation. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -51,10 +51,10 @@ class gpu_context_t : public alloc_device_t {
int format, int usage,
buffer_handle_t* pHandle,
int* pStride);
int gralloc_alloc_framebuffer_locked(size_t size, int usage,
int gralloc_alloc_framebuffer_locked(int usage,
buffer_handle_t* pHandle);
int gralloc_alloc_framebuffer(size_t size, int usage,
int gralloc_alloc_framebuffer(int usage,
buffer_handle_t* pHandle);
static int gralloc_free(alloc_device_t* dev, buffer_handle_t handle);

3
libgralloc/gr.h
View File

@@ -42,7 +42,8 @@ inline size_t roundUpToPageSize(size_t x) {
return (x + (PAGE_SIZE-1)) & ~(PAGE_SIZE-1);
}
inline size_t ALIGN(size_t x, size_t align) {
template <class Type>
inline Type ALIGN(Type x, Type align) {
return (x + align-1) & ~(align-1);
}

25
libgralloc/gralloc_priv.h
View File

@@ -209,33 +209,35 @@ struct private_handle_t : public native_handle {
// ints
int magic;
int flags;
int size;
int offset;
size_t size;
size_t offset;
int bufferType;
int base;
int offset_metadata;
uintptr_t base;
size_t offset_metadata;
// The gpu address mapped into the mmu.
int gpuaddr;
uintptr_t gpuaddr;
int format;
int width;
int height;
int base_metadata;
uintptr_t base_metadata;
#ifdef __cplusplus
static const int sNumInts = 12;
//TODO64: Revisit this on 64-bit
static const int sNumInts = (6 + (3 * (sizeof(size_t)/sizeof(int))) +
(3 * (sizeof(uintptr_t)/sizeof(int))));
static const int sNumFds = 2;
static const int sMagic = 'gmsm';
private_handle_t(int fd, int size, int flags, int bufferType,
private_handle_t(int fd, size_t size, int flags, int bufferType,
int format, int width, int height, int eFd = -1,
int eOffset = 0, int eBase = 0) :
size_t eOffset = 0, uintptr_t eBase = 0) :
fd(fd), fd_metadata(eFd), magic(sMagic),
flags(flags), size(size), offset(0), bufferType(bufferType),
base(0), offset_metadata(eOffset), gpuaddr(0),
format(format), width(width), height(height),
base_metadata(eBase)
{
version = sizeof(native_handle);
version = (int) sizeof(native_handle);
numInts = sNumInts;
numFds = sNumFds;
}
@@ -254,7 +256,8 @@ struct private_handle_t : public native_handle {
hnd->magic != sMagic)
{
ALOGD("Invalid gralloc handle (at %p): "
"ver(%d/%d) ints(%d/%d) fds(%d/%d) magic(%c%c%c%c/%c%c%c%c)",
"ver(%d/%zu) ints(%d/%d) fds(%d/%d)"
"magic(%c%c%c%c/%c%c%c%c)",
h,
h ? h->version : -1, sizeof(native_handle),
h ? h->numInts : -1, sNumInts,

24
libgralloc/ionalloc.cpp
View File

@@ -1,5 +1,5 @@
/*
* Copyright (c) 2011-2012, The Linux Foundation. All rights reserved.
* Copyright (c) 2011-2014, The Linux Foundation. All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
@@ -114,16 +114,16 @@ int IonAlloc::alloc_buffer(alloc_data& data)
data.base = base;
data.fd = fd_data.fd;
ioctl(mIonFd, ION_IOC_FREE, &handle_data);
ALOGD_IF(DEBUG, "ion: Allocated buffer base:%p size:%d fd:%d",
ALOGD_IF(DEBUG, "ion: Allocated buffer base:%p size:%zu fd:%d",
data.base, ionAllocData.len, data.fd);
return 0;
}
int IonAlloc::free_buffer(void* base, size_t size, int offset, int fd)
int IonAlloc::free_buffer(void* base, size_t size, size_t offset, int fd)
{
Locker::Autolock _l(mLock);
ALOGD_IF(DEBUG, "ion: Freeing buffer base:%p size:%d fd:%d",
ALOGD_IF(DEBUG, "ion: Freeing buffer base:%p size:%zu fd:%d",
base, size, fd);
int err = 0;
err = open_device();
@@ -136,7 +136,7 @@ int IonAlloc::free_buffer(void* base, size_t size, int offset, int fd)
return err;
}
int IonAlloc::map_buffer(void **pBase, size_t size, int offset, int fd)
int IonAlloc::map_buffer(void **pBase, size_t size, size_t offset, int fd)
{
int err = 0;
void *base = 0;
@@ -154,15 +154,15 @@ int IonAlloc::map_buffer(void **pBase, size_t size, int offset, int fd)
ALOGE("ion: Failed to map memory in the client: %s",
strerror(errno));
} else {
ALOGD_IF(DEBUG, "ion: Mapped buffer base:%p size:%d offset:%d fd:%d",
ALOGD_IF(DEBUG, "ion: Mapped buffer base:%p size:%zu offset:%d fd:%d",
base, size, offset, fd);
}
return err;
}
int IonAlloc::unmap_buffer(void *base, size_t size, int offset)
int IonAlloc::unmap_buffer(void *base, size_t size, size_t /*offset*/)
{
ALOGD_IF(DEBUG, "ion: Unmapping buffer base:%p size:%d", base, size);
ALOGD_IF(DEBUG, "ion: Unmapping buffer base:%p size:%zu", base, size);
int err = 0;
if(munmap(base, size)) {
err = -errno;
@@ -172,12 +172,11 @@ int IonAlloc::unmap_buffer(void *base, size_t size, int offset)
return err;
}
int IonAlloc::clean_buffer(void *base, size_t size, int offset, int fd, int op)
int IonAlloc::clean_buffer(void *base, size_t size, size_t offset, int fd, int op)
{
struct ion_flush_data flush_data;
struct ion_fd_data fd_data;
struct ion_handle_data handle_data;
ion_user_handle_t handle;
int err = 0;
err = open_device();
@@ -195,8 +194,9 @@ int IonAlloc::clean_buffer(void *base, size_t size, int offset, int fd, int op)
handle_data.handle = fd_data.handle;
flush_data.handle = fd_data.handle;
flush_data.vaddr = base;
flush_data.offset = offset;
flush_data.length = size;
// offset and length are uint32_t
flush_data.offset = (uint32_t) offset;
flush_data.length = (uint32_t) size;
struct ion_custom_data d;
switch(op) {

10
libgralloc/ionalloc.h
View File

@@ -1,5 +1,5 @@
/*
* Copyright (c) 2011-2012, The Linux Foundation. All rights reserved.
* Copyright (c) 2011-2014, The Linux Foundation. All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
@@ -42,16 +42,16 @@ class IonAlloc : public IMemAlloc {
virtual int alloc_buffer(alloc_data& data);
virtual int free_buffer(void *base, size_t size,
int offset, int fd);
size_t offset, int fd);
virtual int map_buffer(void **pBase, size_t size,
int offset, int fd);
size_t offset, int fd);
virtual int unmap_buffer(void *base, size_t size,
int offset);
size_t offset);
virtual int clean_buffer(void*base, size_t size,
int offset, int fd, int op);
size_t offset, int fd, int op);
IonAlloc() { mIonFd = FD_INIT; }

24
libgralloc/mapper.cpp
View File

@@ -59,6 +59,9 @@ static int gralloc_map(gralloc_module_t const* module,
buffer_handle_t handle,
void** vaddr)
{
if(!module)
return -EINVAL;
private_handle_t* hnd = (private_handle_t*)handle;
void *mappedAddress;
if (!(hnd->flags & private_handle_t::PRIV_FLAGS_FRAMEBUFFER) &&
@@ -96,6 +99,9 @@ static int gralloc_map(gralloc_module_t const* module,
static int gralloc_unmap(gralloc_module_t const* module,
buffer_handle_t handle)
{
if(!module)
return -EINVAL;
private_handle_t* hnd = (private_handle_t*)handle;
if (!(hnd->flags & private_handle_t::PRIV_FLAGS_FRAMEBUFFER)) {
int err = -EINVAL;
@@ -131,7 +137,7 @@ static pthread_mutex_t sMapLock = PTHREAD_MUTEX_INITIALIZER;
int gralloc_register_buffer(gralloc_module_t const* module,
buffer_handle_t handle)
{
if (private_handle_t::validate(handle) < 0)
if (!module || private_handle_t::validate(handle) < 0)
return -EINVAL;
// In this implementation, we don't need to do anything here
@@ -159,7 +165,7 @@ int gralloc_register_buffer(gralloc_module_t const* module,
int gralloc_unregister_buffer(gralloc_module_t const* module,
buffer_handle_t handle)
{
if (private_handle_t::validate(handle) < 0)
if (!module || private_handle_t::validate(handle) < 0)
return -EINVAL;
/*
@@ -181,6 +187,9 @@ int gralloc_unregister_buffer(gralloc_module_t const* module,
int terminateBuffer(gralloc_module_t const* module,
private_handle_t* hnd)
{
if(!module)
return -EINVAL;
/*
* If the buffer has been mapped during a lock operation, it's time
* to un-map it. It's an error to be here with a locked buffer.
@@ -205,10 +214,10 @@ int terminateBuffer(gralloc_module_t const* module,
int gralloc_lock(gralloc_module_t const* module,
buffer_handle_t handle, int usage,
int l, int t, int w, int h,
int /*l*/, int /*t*/, int /*w*/, int /*h*/,
void** vaddr)
{
if (private_handle_t::validate(handle) < 0)
if (!module || private_handle_t::validate(handle) < 0)
return -EINVAL;
int err = 0;
@@ -243,8 +252,9 @@ int gralloc_lock(gralloc_module_t const* module,
int gralloc_unlock(gralloc_module_t const* module,
buffer_handle_t handle)
{
if (private_handle_t::validate(handle) < 0)
if (!module || private_handle_t::validate(handle) < 0)
return -EINVAL;
int err = 0;
private_handle_t* hnd = (private_handle_t*)handle;
@@ -276,6 +286,9 @@ int gralloc_perform(struct gralloc_module_t const* module,
{
int res = -EINVAL;
va_list args;
if(!module)
return res;
va_start(args, operation);
switch (operation) {
case GRALLOC_MODULE_PERFORM_CREATE_HANDLE_FROM_BUFFER:
@@ -289,7 +302,6 @@ int gralloc_perform(struct gralloc_module_t const* module,
int format = va_arg(args, int);
native_handle_t** handle = va_arg(args, native_handle_t**);
int memoryFlags = va_arg(args, int);
private_handle_t* hnd = (private_handle_t*)native_handle_create(
private_handle_t::sNumFds, private_handle_t::sNumInts);
hnd->magic = private_handle_t::sMagic;

14
libgralloc/memalloc.h
View File

@@ -1,5 +1,5 @@
/*
* Copyright (c) 2011-2012, The Linux Foundation. All rights reserved.
* Copyright (c) 2011-2014, The Linux Foundation. All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
@@ -43,10 +43,10 @@ enum {
struct alloc_data {
void *base;
int fd;
int offset;
size_t offset;
size_t size;
size_t align;
unsigned int pHandle;
uintptr_t pHandle;
bool uncached;
unsigned int flags;
int allocType;
@@ -62,19 +62,19 @@ class IMemAlloc {
// Free buffer
virtual int free_buffer(void *base, size_t size,
int offset, int fd) = 0;
size_t offset, int fd) = 0;
// Map buffer
virtual int map_buffer(void **pBase, size_t size,
int offset, int fd) = 0;
size_t offset, int fd) = 0;
// Unmap buffer
virtual int unmap_buffer(void *base, size_t size,
int offset) = 0;
size_t offset) = 0;
// Clean and invalidate
virtual int clean_buffer(void *base, size_t size,
int offset, int fd, int op) = 0;
size_t offset, int fd, int op) = 0;
// Destructor
virtual ~IMemAlloc() {};