mirror of
https://github.com/FEX-Emu/FEX.git
synced 2026-10-12 17:00:41 +02:00
Ryan Houdek
f161e3bfb0
This isn't quite a 100% clean sweep of IWYU. There are some false positives where clang fails. Additionally there are still a few missed in the frontend side of things that I didn't get to
89 lines
2.4 KiB
C++
89 lines
2.4 KiB
C++
#include "Utils/Allocator/HostAllocator.h"
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#include <FEXCore/Utils/Allocator.h>
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#include <sys/mman.h>
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#ifdef ENABLE_JEMALLOC
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#include <jemalloc/jemalloc.h>
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#endif
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#include <errno.h>
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#include <memory>
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#include <stddef.h>
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#include <stdint.h>
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extern "C" {
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typedef void* (*mmap_hook_type)(
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void *addr, size_t length, int prot, int flags,
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int fd, off_t offset);
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typedef int (*munmap_hook_type)(void *addr, size_t length);
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#ifdef ENABLE_JEMALLOC
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extern mmap_hook_type __mmap_hook;
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extern munmap_hook_type __munmap_hook;
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#endif
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}
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namespace FEXCore::Allocator {
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MMAP_Hook mmap {::mmap};
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MUNMAP_Hook munmap {::munmap};
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#ifdef ENABLE_JEMALLOC
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MALLOC_Hook malloc {::je_malloc};
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REALLOC_Hook realloc {::je_realloc};
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FREE_Hook free {::je_free};
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#else
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MALLOC_Hook malloc {::malloc};
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REALLOC_Hook realloc {::realloc};
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FREE_Hook free {::free};
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#endif
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using GLIBC_MALLOC_Hook = void*(*)(size_t, const void *caller);
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using GLIBC_REALLOC_Hook = void*(*)(void*, size_t, const void *caller);
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using GLIBC_FREE_Hook = void(*)(void*, const void *caller);
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std::unique_ptr<Alloc::HostAllocator> Alloc64{};
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void *FEX_mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset) {
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void *Result = Alloc64->Mmap(addr, length, prot, flags, fd, offset);
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if (Result >= (void*)-4096) {
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errno = -(uint64_t)Result;
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return (void*)-1;
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}
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return Result;
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}
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int FEX_munmap(void *addr, size_t length) {
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int Result = Alloc64->Munmap(addr, length);
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if (Result != 0) {
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errno = -Result;
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return -1;
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}
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return Result;
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}
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
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void SetupHooks() {
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Alloc64 = Alloc::OSAllocator::Create64BitAllocator();
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#ifdef ENABLE_JEMALLOC
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__mmap_hook = FEX_mmap;
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__munmap_hook = FEX_munmap;
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#endif
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FEXCore::Allocator::mmap = FEX_mmap;
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FEXCore::Allocator::munmap = FEX_munmap;
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}
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void ClearHooks() {
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#ifdef ENABLE_JEMALLOC
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__mmap_hook = ::mmap;
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__munmap_hook = ::munmap;
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#endif
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FEXCore::Allocator::mmap = ::mmap;
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FEXCore::Allocator::munmap = ::munmap;
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// XXX: This is currently a leak.
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// We can't work around this yet until static initializers that allocate memory are completely removed from our codebase
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// Luckily we only remove this on process shutdown, so the kernel will do the cleanup for us
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Alloc64.release();
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}
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#pragma GCC diagnostic pop
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}
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