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win32: Be a bit more optimistic with allocated ranges; we get contiguous ranges more often than not

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kd-11 2021-01-10 20:26:17 +03:00 committed by kd-11
parent 58d367d704
commit ead180aa60
1 changed files with 7 additions and 1 deletions

8
rpcs3/util/vm_native.cpp

@ -221,12 +221,18 @@ namespace utils
void memory_protect(void* pointer, usz size, protection prot) void memory_protect(void* pointer, usz size, protection prot)
{ {
#ifdef _WIN32 #ifdef _WIN32
DWORD old;
if (::VirtualProtect(pointer, size, +prot, &old))
{
return;
}
for (u64 addr = reinterpret_cast<u64>(pointer), end = addr + size; addr < end;) for (u64 addr = reinterpret_cast<u64>(pointer), end = addr + size; addr < end;)
{ {
const u64 boundary = (addr + 0x10000) & -0x10000; const u64 boundary = (addr + 0x10000) & -0x10000;
const u64 block_size = std::min(boundary, end) - addr; const u64 block_size = std::min(boundary, end) - addr;
DWORD old;
if (!::VirtualProtect(reinterpret_cast<LPVOID>(addr), block_size, +prot, &old)) if (!::VirtualProtect(reinterpret_cast<LPVOID>(addr), block_size, +prot, &old))
{ {
fmt::throw_exception("VirtualProtect failed (%p, 0x%x, addr=0x%x, error=%#x)", pointer, size, addr, GetLastError()); fmt::throw_exception("VirtualProtect failed (%p, 0x%x, addr=0x%x, error=%#x)", pointer, size, addr, GetLastError());