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Cache read component path resolutions

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udo
2026-07-18 09:31:40 +00:00
parent 2a2d802daa
commit 69e8051fd3
3 changed files with 135 additions and 3 deletions
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src/wasm/worker.cpp
+33 -3
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@@ -1167,7 +1167,13 @@ private:
bool stale = false;
String source_generation;
};
struct ComponentResolutionState
{
std::chrono::steady_clock::time_point checked_at;
String resolved;
};
std::map<String, ComponentFreshnessState> component_freshness;
std::map<String, ComponentResolutionState> component_resolutions;
static String cached_wasm_path(const String& wasm_path)
{
@@ -2412,6 +2418,9 @@ private:
String error;
size_t unit_index = 0;
bool loaded_reuse = false;
String method = context ? to_upper(trim(context->params["REQUEST_METHOD"])) : String("");
bool cacheable_read = method == "GET" || method == "HEAD";
bool read_request = cacheable_read || method == "OPTIONS";
auto loaded = units_by_source.find(file_name);
if(loaded == units_by_source.end())
{
@@ -2427,7 +2436,30 @@ private:
component_loaded_reuse_count++;
}
else
resolved = resolve_source_path(file_name, current_unit);
{
String cache_key = entry_dir + "\t" + resolve_key;
auto cached = worker.component_resolutions.find(cache_key);
auto now = std::chrono::steady_clock::now();
if(cacheable_read && cached != worker.component_resolutions.end() &&
std::chrono::duration_cast<std::chrono::seconds>(now - cached->second.checked_at).count() < 10)
resolved = cached->second.resolved;
else
{
resolved = resolve_source_path(file_name, current_unit);
if(cacheable_read && resolved != "")
{
if(cached == worker.component_resolutions.end() && worker.component_resolutions.size() >= 4096)
{
auto oldest = worker.component_resolutions.begin();
for(auto it = worker.component_resolutions.begin(); it != worker.component_resolutions.end(); ++it)
if(it->second.checked_at < oldest->second.checked_at)
oldest = it;
worker.component_resolutions.erase(oldest);
}
worker.component_resolutions[cache_key] = { now, resolved };
}
}
}
component_path_total_us += (u64)std::chrono::duration_cast<std::chrono::microseconds>(
std::chrono::steady_clock::now() - probe_start).count();
if(resolved == "")
@@ -2447,8 +2479,6 @@ private:
auto artifact_start = std::chrono::steady_clock::now();
bool artifact_exists = file_exists_host(worker.unit_wasm_path(resolved));
bool can_serve_stale = compiler_request_can_serve_stale_artifact(context);
String method = context ? to_upper(trim(context->params["REQUEST_METHOD"])) : String("");
bool read_request = method == "GET" || method == "HEAD" || method == "OPTIONS";
if(can_serve_stale && read_request && !component_source_generation_checked)
{
component_source_generation = compiler_source_generation(context);