From 30b5faead0483fe632eb4482f9222dec6b5cd4d0 Mon Sep 17 00:00:00 2001
From: Arthur LAURENT <arthur.laurent4@gmail.com>
Date: Tue, 13 May 2025 21:54:34 +0200
Subject: (C++ modules support) parallelize when possible C++ module scanner

---
 xmake/rules/c++/modules/support.lua | 28 +++++++++++++++++-----------
 1 file changed, 17 insertions(+), 11 deletions(-)

(limited to 'xmake/rules/c++/modules/support.lua')

diff --git a/xmake/rules/c++/modules/support.lua b/xmake/rules/c++/modules/support.lua
index faaa57369..ec2bb53e0 100644
--- a/xmake/rules/c++/modules/support.lua
+++ b/xmake/rules/c++/modules/support.lua
@@ -23,6 +23,8 @@ import("core.base.json")
 import("core.base.hashset")
 import("core.cache.memcache", {alias = "_memcache"})
 import("core.cache.localcache", {alias = "_localcache"})
+import("private.async.jobpool")
+import("async.runjobs")
 import("lib.detect.find_file")
 import("core.project.project")
 import("core.project.config")
@@ -236,21 +238,25 @@ end
 -- load module infos
 function load_moduleinfos(target, sourcebatch)
     local moduleinfos
+    local jobs = jobpool.new()
     for _, sourcefile in ipairs(sourcebatch.sourcefiles) do
-        local reused, from = is_reused(target, sourcefile)
-        local dependfile = reused and from:dependfile(sourcefile) or target:dependfile(sourcefile)
-        if os.isfile(dependfile) then
-            local data = io.load(dependfile)
-            if data then
-                moduleinfos = moduleinfos or {}
-                local moduleinfo = json.decode(data.moduleinfo)
-                moduleinfo.sourcefile = sourcefile
-                if moduleinfo then
-                    table.insert(moduleinfos, moduleinfo)
+        jobs:addjob("job/load_moduleinfo/" .. sourcefile, function()
+            local reused, from = is_reused(target, sourcefile)
+            local dependfile = reused and from:dependfile(sourcefile) or target:dependfile(sourcefile)
+            if os.isfile(dependfile) then
+                local data = io.load(dependfile)
+                if data then
+                    moduleinfos = moduleinfos or {}
+                    local moduleinfo = json.decode(data.moduleinfo)
+                    moduleinfo.sourcefile = sourcefile
+                    if moduleinfo then
+                        table.insert(moduleinfos, moduleinfo)
+                    end
                 end
             end
-        end
+        end)
     end
+    runjobs(format("loading module infos for target %s", target:fullname()), jobs, {comax = option.get("jobs") or os.default_njob()})
     return moduleinfos
 end
 
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