diff options
Diffstat (limited to 'proto-ft')
| -rw-r--r-- | proto-ft/ftnoir_protocol_ft.cpp | 30 |
1 files changed, 23 insertions, 7 deletions
diff --git a/proto-ft/ftnoir_protocol_ft.cpp b/proto-ft/ftnoir_protocol_ft.cpp index 08f6efb3..f119f502 100644 --- a/proto-ft/ftnoir_protocol_ft.cpp +++ b/proto-ft/ftnoir_protocol_ft.cpp @@ -16,6 +16,14 @@ #include <atomic> #include <cmath> #include <windows.h> +#include <intrin.h> + +static int page_size() +{ + SYSTEM_INFO system_info; + GetSystemInfo(&system_info); + return system_info.dwPageSize; +} freetrack::freetrack() { @@ -51,12 +59,15 @@ never_inline void store(float volatile& place, const float value) (void)InterlockedExchange((LONG volatile*)&place, value_.i32); } -never_inline void store(std::int32_t volatile& place, std::int32_t value) +template<typename t, typename u> +force_inline +std::enable_if_t<std::is_integral_v<t> && sizeof(t) == 4> +store(t volatile& place, u value) { (void)InterlockedExchange((LONG volatile*) &place, value); } -never_inline std::int32_t load(std::int32_t volatile& place) +force_inline std::int32_t load(std::int32_t volatile& place) { return InterlockedCompareExchange((volatile LONG*) &place, 0, 0); } @@ -103,19 +114,24 @@ void freetrack::pose(const double* headpose) const std::uintptr_t addr_ = addr & ~(sizeof(LONG)-1u); static_assert(sizeof(LONG) == 4, ""); + static_assert(sizeof(int) == 4, ""); + + // memory mappings are page-aligned due to TLB + if (std::intptr_t(pMemData) & page_size() - 1) + assert(!"proto/freetrack: memory mapping not page aligned"); - // the data `happens' to be aligned by virtue of element ordering + // the data happens to be aligned by virtue of element ordering // inside FTHeap. there's no deeper reason behind it. if (addr != addr_) - assert(!"unaligned access"); + assert(!"proto/freetrack: unaligned access"); // no unaligned atomic access for `char' for (unsigned k = 0; k < 2; k++) - store(*(std::int32_t volatile*)&pMemData->table_ints[k], t.ints[k]); + store(pMemData->table_ints[k], t.ints[k]); } store(ft->GameID2, id); - store((std::int32_t volatile&) data->DataID, 0); + store(data->DataID, 0); intGameID = id; @@ -160,7 +176,7 @@ void freetrack::set_protocols(bool ft, bool npclient) module_status freetrack::initialize() { if (!shm.success()) - return error("Can't load freetrack memory mapping"); + return error(_("Can't load freetrack memory mapping")); bool use_ft = false, use_npclient = false; |