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vm: add "hook" memory (32G)

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Implement overcommit emulation for shm.
This commit is contained in:
Nekotekina 2021-04-30 17:28:48 +03:00
parent e327d47169
commit 1b0b2fe21e
3 changed files with 48 additions and 8 deletions
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26
rpcs3/util/vm_native.cpp
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@ -3,6 +3,7 @@
#include "util/vm.hpp"
#include "util/asm.hpp"
#ifdef _WIN32
#include "Utilities/File.h"
#include "util/dyn_lib.hpp"
#include <Windows.h>
#else
@ -283,12 +284,11 @@ namespace utils
}
shm::shm(u32 size, u32 flags)
: m_size(utils::align(size, 0x10000))
, m_flags(flags)
: m_flags(flags)
, m_size(utils::align(size, 0x10000))
{
#ifdef _WIN32
m_handle = ::CreateFileMappingW(INVALID_HANDLE_VALUE, nullptr, PAGE_EXECUTE_READWRITE, 0, m_size, nullptr);
ensure(m_handle != INVALID_HANDLE_VALUE);
m_handle = ensure(::CreateFileMappingW(INVALID_HANDLE_VALUE, nullptr, PAGE_EXECUTE_READWRITE, 0, m_size, nullptr));
#elif __linux__
m_file = -1;
@ -326,6 +326,24 @@ namespace utils
#endif
}
shm::shm(u64 size, const std::string& storage)
: m_size(utils::align(size, 0x10000))
{
#ifdef _WIN32
fs::file f = ensure(fs::file(storage, fs::read + fs::rewrite));
FILE_DISPOSITION_INFO disp{ .DeleteFileW = true };
ensure(SetFileInformationByHandle(f.get_handle(), FileDispositionInfo, &disp, sizeof(disp)));
ensure(DeviceIoControl(f.get_handle(), FSCTL_SET_SPARSE, nullptr, 0, nullptr, 0, nullptr, nullptr));
ensure(f.trunc(m_size));
m_handle = ensure(::CreateFileMappingW(f.get_handle(), nullptr, PAGE_READWRITE, 0, 0, nullptr));
#else
m_file = ::open(storage.c_str(), O_RDWR | O_CREAT | O_TRUNC, S_IWUSR | S_IRUSR);
ensure(m_file >= 0);
ensure(::ftruncate(m_file, m_size) >= 0);
::unlink(storage.c_str());
#endif
}
shm::~shm()
{
this->unmap_self();