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extra buffer precautions to not exhaust DMem, format better + perf history nerf

This commit is contained in:
lizzie 2026-01-16 08:46:20 +00:00
parent a31891308e
commit f77bbc64f1
3 changed files with 16 additions and 31 deletions
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3
src/common/fiber.cpp
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@ -33,9 +33,6 @@ struct Fiber::FiberImpl {
boost::context::detail::fcontext_t context{};
boost::context::detail::fcontext_t rewind_context{};
boost::context::detail::fcontext_t context{};
boost::context::detail::fcontext_t rewind_context{};
std::mutex guard;
std::function<void()> entry_point;
std::function<void()> rewind_point;

40
src/common/virtual_buffer.cpp
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@ -111,15 +111,15 @@ static void SwapHandler(int sig, void* raw_context) {
if (auto const it = std::ranges::find_if(swap_regions, [addr = mctx.mc_addr](auto const& e) {
return uintptr_t(addr) >= uintptr_t(e.first) && uintptr_t(addr) < uintptr_t(e.first) + e.second;
}); it != swap_regions.end()) {
size_t const page_size = 4096 * 8;
size_t const page_size = 4096 * 4; //16K
size_t const page_mask = ~(page_size - 1);
// should replace the existing mapping... ugh
void* aligned_addr = reinterpret_cast<void*>(uintptr_t(mctx.mc_addr) & page_mask);
void* res = mmap(aligned_addr, page_size, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_ANON | MAP_PRIVATE, -1, 0);
if (res == MAP_FAILED) {
LOG_ERROR(HW_Memory, "FAIL mapped addr {},{} @ {}:{}", mctx.mc_addr, aligned_addr, it->first, it->second);
LOG_ERROR(HW_Memory, "{},{} @ {}:{}", mctx.mc_addr, aligned_addr, it->first, it->second);
} else {
LOG_INFO(HW_Memory, "OK mapped addr {},{} @ {}:{}", mctx.mc_addr, aligned_addr, it->first, it->second);
LOG_TRACE(HW_Memory, "{},{} @ {}:{}", mctx.mc_addr, aligned_addr, it->first, it->second);
}
} else {
LOG_ERROR(HW_Memory, "fault in addr {:#x} at {:#x}", mctx.mc_addr, mctx.mc_rip); // print caller address
@ -133,36 +133,20 @@ void InitSwap() noexcept {
void InitSwap() noexcept {}
#endif
static const char *swapfile_names[] {
"/data/eden/games/swap0.bin",
"/data/eden/games/swap1.bin",
"/data/eden/games/swap2.bin",
"/data/eden/games/swap3.bin",
"/data/eden/games/swap4.bin"
};
static size_t swapfile_count = 0;
void* AllocateMemoryPages(std::size_t size) noexcept {
#ifdef _WIN32
void* addr = VirtualAlloc(nullptr, size, MEM_COMMIT, PAGE_READWRITE);
ASSERT(addr != nullptr);
#elif defined(__OPENORBIS__)
void* addr = mmap(nullptr, size, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, -1, 0);
if (addr == MAP_FAILED) {
LOG_WARNING(HW_Memory, "failed to mmap({} bytes) using swapfile {}", size, swapfile_names[swapfile_count]);
// int fd = open(swapfile_names[swapfile_count], O_TRUNC | O_RDWR | O_CREAT, S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH);
// ASSERT(fd > 0);
// ftruncate(fd, size);
// addr = mmap(nullptr, size, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
// ASSERT(addr != MAP_FAILED);
// ++swapfile_count;
addr = mmap(nullptr, size, PROT_READ | PROT_WRITE, MAP_VOID | MAP_PRIVATE, -1, 0);
ASSERT(addr != MAP_FAILED);
swap_regions.emplace_back(addr, size);
} else {
LOG_INFO(HW_Memory, "mmap {} bytes", size);
}
// void* addr = mmap(nullptr, size, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, -1, 0);
// if (addr == MAP_FAILED) {
LOG_WARNING(HW_Memory, "Using VoidMem for {}B area", size);
void* addr = mmap(nullptr, size, PROT_READ | PROT_WRITE, MAP_VOID | MAP_PRIVATE, -1, 0);
ASSERT(addr != MAP_FAILED);
swap_regions.emplace_back(addr, size);
// } else {
// LOG_INFO(HW_Memory, "mmap {} bytes", size);
// }
#else
void* addr = mmap(nullptr, size, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, -1, 0);
ASSERT(addr != MAP_FAILED);

4
src/core/perf_stats.h
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@ -60,7 +60,11 @@ private:
std::size_t current_index{0};
/// Stores an hour of historical frametime data useful for processing and tracking performance
/// regressions with code changes.
#ifdef __OPENORBIS__
std::array<double, 60> perf_history{};
#else
std::array<double, 216000> perf_history{};
#endif
/// Point when the cumulative counters were reset
Clock::time_point reset_point = Clock::now();