Use netstatusGetDetails from a dedicated thread, since nifmGetInternetConnectionStatus can block for a few seconds.

Makefile.pc

@@ -10,7 +10,7 @@ EXTRA_LDFLAGS="-lws2_32"
 endif
 
 test : pc_main/main.cpp pc_main/pc_launch.c pc_main/pc_power.c pc_main/pc_netstatus.c \
-	common/menu.c common/font.c common/language.c common/launch.c common/worker.c \
+	common/menu.c common/font.c common/language.c common/launch.c common/worker.c common/status.c \
 	common/menu-entry.c common/menu-list.c common/message-box.c common/text.c \
 	common/ui.c common/assets.c common/math.c common/theme.c \
 	common/netloader.c

common/common.h

@@ -65,6 +65,7 @@ typedef union {
 #include "power.h"
 #include "netloader.h"
 #include "netstatus.h"
+#include "status.h"
 
 void menuStartupPath(void);
 void menuStartup(void);

common/menu.c

@@ -438,9 +438,12 @@ void drawCharge() {
 }
 
 void drawNetwork(int tmpX) {
+    bool netstatusFlag=0;
     AssetId id;
-    if (netstatusGetDetails(&id))
+    if (statusGet(&netstatusFlag, &id)) {
-        drawIcon(tmpX, 0 + 47 + 10 + 3, 24, 24, assetsGetDataBuffer(id), themeCurrent.textColor);
+        if (netstatusFlag)
+            drawIcon(tmpX, 0 + 47 + 10 + 3, 24, 24, assetsGetDataBuffer(id), themeCurrent.textColor);
+    }
 }
 
 void drawStatus() {

common/status.c

@@ -0,0 +1,109 @@
+#include "status.h"
+
+static bool s_statusInitialized = 0;
+static thrd_t s_statusThread;
+static cnd_t s_statusCdn;
+static mtx_t s_statusMtx;
+static mtx_t s_statusAccessMtx;
+static bool s_statusExit;
+
+static bool s_statusReady;
+static bool s_statusNetFlag;
+static AssetId s_statusNetAssetId;
+
+// This uses netstatusGetDetails from a dedicated thread, since nifmGetInternetConnectionStatus can block for a few seconds.
+
+static int statusThreadProc(void* unused)
+{
+    mtx_lock(&s_statusMtx);
+
+    struct timespec timeout = {0};
+
+    clock_gettime(CLOCK_MONOTONIC, &timeout);
+    timeout.tv_sec++;
+
+    for (;;)
+    {
+        cnd_timedwait(&s_statusCdn, &s_statusMtx, &timeout);
+
+        if (s_statusExit)
+            break;
+
+        mtx_lock(&s_statusAccessMtx);
+
+        s_statusNetFlag = netstatusGetDetails(&s_statusNetAssetId);
+
+        s_statusReady = 1;
+
+        mtx_unlock(&s_statusAccessMtx);
+
+        clock_gettime(CLOCK_MONOTONIC, &timeout);
+        timeout.tv_sec++;
+    }
+
+    mtx_unlock(&s_statusMtx);
+
+    return 0;
+}
+
+bool statusGet(bool *netstatusFlag, AssetId *netstatusAssetId) {
+    if (!s_statusReady) return 0;
+
+    mtx_lock(&s_statusAccessMtx);
+
+    *netstatusFlag = s_statusNetFlag;
+    *netstatusAssetId = s_statusNetAssetId;
+
+    mtx_unlock(&s_statusAccessMtx);
+
+    return 1;
+}
+
+bool statusInit(void)
+{
+    if (s_statusInitialized) return 1;
+
+    if (cnd_init(&s_statusCdn) != thrd_success) return 0;
+    if (mtx_init(&s_statusMtx, mtx_plain) != thrd_success) {
+        cnd_destroy(&s_statusCdn);
+        return 0;
+    }
+
+    if (mtx_init(&s_statusAccessMtx, mtx_plain) != thrd_success) {
+        mtx_destroy(&s_statusMtx);
+        cnd_destroy(&s_statusCdn);
+        return 0;
+    }
+
+    if (thrd_create(&s_statusThread, statusThreadProc, 0) != thrd_success) {
+        mtx_destroy(&s_statusAccessMtx);
+        mtx_destroy(&s_statusMtx);
+        cnd_destroy(&s_statusCdn);
+        return 0;
+    }
+
+    s_statusInitialized = 1;
+    return 1;
+}
+
+void statusExit(void)
+{
+    int res=0;
+
+    if (!s_statusInitialized) return;
+    s_statusInitialized = 0;
+
+    mtx_lock(&s_statusMtx);
+    s_statusExit = true;
+    cnd_signal(&s_statusCdn);
+    mtx_unlock(&s_statusMtx);
+
+    thrd_join(s_statusThread, &res);
+
+    s_statusReady = 0;
+
+    mtx_destroy(&s_statusAccessMtx);
+    mtx_destroy(&s_statusMtx);
+    cnd_destroy(&s_statusCdn);
+}
+

common/status.h

@@ -0,0 +1,7 @@
+#pragma once
+#include "common.h"
+
+bool statusInit(void);
+void statusExit(void);
+bool statusGet(bool *netstatusFlag, AssetId *netstatusAssetId);
+

nx_main/main.c

@@ -87,6 +87,11 @@ int main(int argc, char **argv)
         snprintf(errormsg, sizeof(errormsg)-1, "Error: workerInit() failed.");
     }
 
+    if (R_SUCCEEDED(rc) && !statusInit()) {
+        rc = 1;
+        snprintf(errormsg, sizeof(errormsg)-1, "Error: statusInit() failed.");
+    }
+
     if (R_SUCCEEDED(rc)) menuStartup();
 
     if (R_SUCCEEDED(rc)) {
@@ -175,6 +180,7 @@ int main(int argc, char **argv)
     fontExit();
     launchExit();
     netloaderSignalExit();
+    statusExit();
     workerExit();
     netloaderExit();
     powerExit();

pc_main/main.cpp

@@ -22,6 +22,7 @@ int main()
     fontInitialize();
     netloaderInit();
     workerInit();
+    statusInit();
     menuStartup();
 
     while (window.isOpen())
@@ -56,6 +57,7 @@ int main()
     }
 
     netloaderSignalExit();
+    statusExit();
     workerExit();
     netloaderExit();
     fontExit();