From c1f4286a5cbc1794fe7be5bdbbd6a0bf29ef84d4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Morten=20Johan=20S=C3=B8rvig?= <morten.sorvig@qt.io>
Date: Wed, 12 Dec 2018 10:00:05 +0100
Subject: Wasm: Implement QThread::idealThreadCount()

Read the navigator.hardwareConcurrency property.

Task-number: QTBUG-64625
Change-Id: I2ad582b67e4b0ddac3e3c21febab55543b2e1d6d
Reviewed-by: Lorn Potter <lorn.potter@gmail.com>
---
 src/corelib/thread/qthread_unix.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/corelib/thread/qthread_unix.cpp b/src/corelib/thread/qthread_unix.cpp
index 329caa02ba..a13f8ca215 100644
--- a/src/corelib/thread/qthread_unix.cpp
+++ b/src/corelib/thread/qthread_unix.cpp
@@ -100,6 +100,9 @@
 #include <sys/neutrino.h>
 #endif
 
+#if defined(Q_OS_WASM)
+#include <emscripten/val.h>
+#endif
 
 QT_BEGIN_NAMESPACE
 
@@ -499,6 +502,8 @@ int QThread::idealThreadCount() Q_DECL_NOTHROW
     // as of aug 2008 VxWorks < 6.6 only supports one single core CPU
     cores = 1;
 #  endif
+#elif defined(Q_OS_WASM)
+    cores = emscripten::val::global("navigator")["hardwareConcurrency"].as<int>();
 #else
     // the rest: Linux, Solaris, AIX, Tru64
     cores = (int)sysconf(_SC_NPROCESSORS_ONLN);
-- 
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