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fixes 4 stuff

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lizzie 2025-12-06 23:02:09 +00:00
parent 4fe78fa2a7
commit a2982c5e3b
4 changed files with 7 additions and 11 deletions
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10
src/common/virtual_buffer.cpp
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@ -37,7 +37,7 @@ void* AllocateMemoryPages(std::size_t size) noexcept {
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_VOID | MAP_PRIVATE, -1, 0);
void* addr = mmap(nullptr, size, PROT_NONE, MAP_VOID | MAP_PRIVATE, -1, 0);
ASSERT(addr != MAP_FAILED);
#else
void* addr = mmap(nullptr, size, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, -1, 0);
@ -60,15 +60,15 @@ void FreeMemoryPages(void* addr, [[maybe_unused]] std::size_t size) noexcept {
#ifdef __OPENORBIS__
static struct sigaction old_sa_segv;
static void SwapHandler(int sig, siginfo_t* si, void* raw_context) {
void* a_addr = reinterpret_cast<void*>(uintptr_t(si->si_addr) & ~0xfff);
mmap(a_addr, 4096, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, -1, 0);
//mprotect(a_addr, 4096, PROT_READ | PROT_WRITE);
void* aligned_addr = reinterpret_cast<void*>(uintptr_t(si->si_addr) & ~0xfff);
void* res = mmap(aligned_addr, 4096, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_ANON | MAP_PRIVATE, -1, 0);
ASSERT(res != MAP_FAILED);
}
bool InitSwap() noexcept {
struct sigaction sa;
sa.sa_handler = NULL;
sa.sa_sigaction = &SwapHandler;
sa.__sa_handler.__sa_sigaction = &SwapHandler;
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_SIGINFO | SA_RESTART;
return sigaction(SIGSEGV, &sa, &old_sa_segv) == 0;