本文整理汇总了C++中MemArena::CreateView方法的典型用法代码示例。如果您正苦于以下问题：C++ MemArena::CreateView方法的具体用法？C++ MemArena::CreateView怎么用？C++ MemArena::CreateView使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类MemArena的用法示例。
在下文中一共展示了MemArena::CreateView方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: Memory_TryBase
static bool Memory_TryBase(u32 flags) {
// OK, we know where to find free space. Now grab it!
// We just mimic the popular BAT setup.
#if defined(_XBOX)
void *ptr;
#elif !defined(__SYMBIAN32__)
size_t position = 0;
size_t last_position = 0;
#endif
// Zero all the pointers to be sure.
for (int i = 0; i < num_views; i++)
{
if (views[i].out_ptr_low)
*views[i].out_ptr_low = 0;
if (views[i].out_ptr)
*views[i].out_ptr = 0;
}
int i;
for (i = 0; i < num_views; i++)
{
const MemoryView &view = views[i];
if (view.size == 0)
continue;
SKIP(flags, view.flags);
#ifdef __SYMBIAN32__
if (!CanIgnoreView(view)) {
memmap->Commit(view.virtual_address & MEMVIEW32_MASK, view.size);
}
*(view.out_ptr) = (u8*)base + (view.virtual_address & MEMVIEW32_MASK);
#elif defined(_XBOX)
if (!CanIgnoreView(view)) {
*(view.out_ptr_low) = (u8*)(base + view.virtual_address);
ptr = VirtualAlloc(base + (view.virtual_address & MEMVIEW32_MASK), view.size, MEM_COMMIT, PAGE_READWRITE);
}
*(view.out_ptr) = (u8*)base + (view.virtual_address & MEMVIEW32_MASK);
#else
if (view.flags & MV_MIRROR_PREVIOUS) {
position = last_position;
} else {
*(view.out_ptr_low) = (u8*)g_arena.CreateView(position, view.size);
if (!*view.out_ptr_low)
goto bail;
}
#ifdef _M_X64
*view.out_ptr = (u8*)g_arena.CreateView(
position, view.size, base + view.virtual_address);
#else
if (CanIgnoreView(view)) {
// No need to create multiple identical views.
*view.out_ptr = *views[i - 1].out_ptr;
} else {
*view.out_ptr = (u8*)g_arena.CreateView(
position, view.size, base + (view.virtual_address & MEMVIEW32_MASK));
if (!*view.out_ptr)
goto bail;
}
#endif
last_position = position;
position += g_arena.roundup(view.size);
#endif
}
return true;
#if !defined(_XBOX) && !defined(__SYMBIAN32__)
bail:
// Argh! ERROR! Free what we grabbed so far so we can try again.
for (int j = 0; j <= i; j++)
{
if (views[i].size == 0)
continue;
SKIP(flags, views[i].flags);
if (views[j].out_ptr_low && *views[j].out_ptr_low)
{
g_arena.ReleaseView(*views[j].out_ptr_low, views[j].size);
*views[j].out_ptr_low = NULL;
}
if (*views[j].out_ptr)
{
if (!CanIgnoreView(views[j])) {
g_arena.ReleaseView(*views[j].out_ptr, views[j].size);
}
*views[j].out_ptr = NULL;
}
}
return false;
#endif
}示例2: Memory_TryBase
static bool Memory_TryBase(u32 flags) {
// OK, we know where to find free space. Now grab it!
// We just mimic the popular BAT setup.
size_t position = 0;
size_t last_position = 0;
// Zero all the pointers to be sure.
for (int i = 0; i < num_views; i++) {
if (views[i].out_ptr)
*views[i].out_ptr = 0;
}
int i;
for (i = 0; i < num_views; i++) {
const MemoryView &view = views[i];
if (view.size == 0)
continue;
SKIP(flags, view.flags);
if (view.flags & MV_MIRROR_PREVIOUS) {
position = last_position;
}
#ifndef MASKED_PSP_MEMORY
*view.out_ptr = (u8*)g_arena.CreateView(
position, view.size, base + view.virtual_address);
if (!*view.out_ptr) {
goto bail;
DEBUG_LOG(MEMMAP, "Failed at view %d", i);
}
#else
if (CanIgnoreView(view)) {
// This is handled by address masking in 32-bit, no view needs to be created.
*view.out_ptr = *views[i - 1].out_ptr;
} else {
*view.out_ptr = (u8*)g_arena.CreateView(
position, view.size, base + (view.virtual_address & MEMVIEW32_MASK));
if (!*view.out_ptr) {
DEBUG_LOG(MEMMAP, "Failed at view %d", i);
goto bail;
}
}
#endif
last_position = position;
position += g_arena.roundup(view.size);
}
return true;
bail:
// Argh! ERROR! Free what we grabbed so far so we can try again.
for (int j = 0; j <= i; j++) {
if (views[i].size == 0)
continue;
SKIP(flags, views[i].flags);
if (*views[j].out_ptr) {
if (!CanIgnoreView(views[j])) {
g_arena.ReleaseView(*views[j].out_ptr, views[j].size);
}
*views[j].out_ptr = NULL;
}
}
return false;
}