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Optimize bulk memory invalidation (#124)

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* Per page -> per range search (optimization)
This commit is contained in:
nmzik
2026-07-29 05:09:36 +02:00
committed by GitHub
parent 861729fc6c
commit f6e01e5403
16 changed files with 322 additions and 228 deletions
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src/kernel/fileSystem.cpp
+14 -14
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@@ -238,8 +238,9 @@ static std::filesystem::path ResolvePathIgnoringCase(const std::filesystem::path
}
// Preserve unmatched components for the caller's ENOENT path.
std::filesystem::path resolved = path.has_root_path() ? path.root_path() : std::filesystem::path(".");
bool matched = true;
std::filesystem::path resolved =
path.has_root_path() ? path.root_path() : std::filesystem::path(".");
bool matched = true;
for (const auto& component: path.relative_path()) {
if (component.empty()) {
@@ -568,11 +569,11 @@ int64_t KYTY_SYSV_ABI KernelRead(int d, void* buf, size_t nbytes) {
file->mutex.Lock();
bool is_invalid = file->f.IsInvalid();
const auto pos = file->f.Tell();
const auto file_size = file->f.Size();
const auto remaining = pos < file_size ? file_size - pos : 0;
Memory::PrepareHostWrite(reinterpret_cast<uint64_t>(buf),
bool is_invalid = file->f.IsInvalid();
const auto pos = file->f.Tell();
const auto file_size = file->f.Size();
const auto remaining = pos < file_size ? file_size - pos : 0;
Memory::InvalidateMemory(reinterpret_cast<uint64_t>(buf),
std::min<uint64_t>(nbytes, remaining));
uint32_t bytes_read = 0;
file->f.Read(buf, static_cast<uint32_t>(nbytes), &bytes_read);
@@ -692,13 +693,12 @@ int64_t KYTY_SYSV_ABI KernelPread(int d, void* buf, size_t nbytes, int64_t offse
file->mutex.Lock();
bool is_invalid = file->f.IsInvalid();
auto pos = file->f.Tell();
const auto file_size = file->f.Size();
const auto remaining = static_cast<uint64_t>(offset) < file_size
? file_size - static_cast<uint64_t>(offset)
: 0;
Memory::PrepareHostWrite(reinterpret_cast<uint64_t>(buf),
bool is_invalid = file->f.IsInvalid();
auto pos = file->f.Tell();
const auto file_size = file->f.Size();
const auto remaining =
static_cast<uint64_t>(offset) < file_size ? file_size - static_cast<uint64_t>(offset) : 0;
Memory::InvalidateMemory(reinterpret_cast<uint64_t>(buf),
std::min<uint64_t>(nbytes, remaining));
uint32_t bytes_read = 0;
file->f.Seek(offset);