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FEXCore: Add helper function to query available CodeBuffer size

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Tony Wasserka committed 2026-02-20 18:49:07 +01:00
1 parent 1d8935d0ab
commit fda087e24f
5 files changed
+19 -13
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FEXCore/Source/Interface/Core/CodeCache.cpp
+5 -4
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@@ -433,11 +433,11 @@ bool CodeCache::LoadData(Core::InternalThreadState* Thread, std::byte* MappedCac
const auto Delta = AlignUp(CTX.LatestOffset, 0x1000) - CTX.LatestOffset;
CTX.LatestOffset += Delta;
while (CTX.LatestOffset + header.CodeBufferSize > CodeBuffer->Size - Utils::FEX_PAGE_SIZE) {
while (CTX.LatestOffset + header.CodeBufferSize > CodeBuffer->UsableSize()) {
if (Thread) {
CTX.ClearCodeCache(Thread);
CodeBuffer = CTX.GetLatest();
LogMan::Msg::IFmt("Increased code buffer size to {} MiB for cache load", CodeBuffer->Size / 1024 / 1024);
LogMan::Msg::IFmt("Increased code buffer size to {} MiB for cache load", CodeBuffer->AllocatedSize / 1024 / 1024);
} else {
ERROR_AND_DIE_FMT("Cannot extend codebuffer without thread!");
}
@@ -445,7 +445,8 @@ bool CodeCache::LoadData(Core::InternalThreadState* Thread, std::byte* MappedCac
// Read CodeBuffer data from file. Make sure the destination is page-aligned.
// TODO: Only load the data needed for the selected section
auto CodeBufferRange = std::as_writable_bytes(std::span {CodeBuffer->Ptr, CodeBuffer->Size}).subspan(CTX.LatestOffset, header.CodeBufferSize);
auto CodeBufferRange =
std::as_writable_bytes(std::span {CodeBuffer->Ptr, CodeBuffer->UsableSize()}).subspan(CTX.LatestOffset, header.CodeBufferSize);
::memcpy(CodeBufferRange.data(), MappedCacheFile, header.CodeBufferSize);
MappedCacheFile += header.CodeBufferSize;
CTX.LatestOffset += header.CodeBufferSize;
@@ -540,7 +541,7 @@ void CodeCache::Validate(const ExecutableFileSectionInfo& Section, fextl::set<ui
auto NewCodeBuffer = ValidationCTX->GetLatest();
std::span<std::byte> CodeBufferRangeRef =
std::as_writable_bytes(std::span {NewCodeBuffer->Ptr, NewCodeBuffer->Ptr + NewCodeBuffer->Size}).subspan(0, CachedCode.size_bytes());
std::as_writable_bytes(std::span {NewCodeBuffer->Ptr, NewCodeBuffer->Ptr + NewCodeBuffer->UsableSize()}).subspan(0, CachedCode.size_bytes());
while (!GuestBlocks.empty()) {
auto [CompiledBlocks, _, _2, _3, _4] = ValidationCTX->CompileCode(ValidationThread.get(), *GuestBlocks.begin(), 0 /* TODO: Set MaxInst? */);