perf: async signal exit ftpsrv and nxlink thread in order to not block. add perf logging for exit.

sphaira/include/ftpsrv_helper.hpp

@@ -6,6 +6,7 @@ namespace sphaira::ftpsrv {
 
 bool Init();
 void Exit();
+void ExitSignal();
 
 using OnInstallStart = std::function<bool(const char* path)>;
 using OnInstallWrite = std::function<bool(const void* buf, size_t size)>;

sphaira/include/nxlink.h

@@ -44,6 +44,9 @@ bool nxlinkInitialize(NxlinkCallback callback);
 // signal for the event to close and then join the thread.
 void nxlinkExit();
 
+// async the exit, call this first and then call exit later to avoid blocking.
+void nxlinkSignalExit();
+
 #ifdef __cplusplus
 }
 #endif

sphaira/include/utils/profile.hpp

@@ -0,0 +1,24 @@
+#pragma once
+
+#include "ui/types.hpp"
+#include "log.hpp"
+
+namespace sphaira::utils {
+
+struct ScopedTimestampProfile {
+    ScopedTimestampProfile(const std::string& name) : m_name{name} {
+
+    }
+
+    ~ScopedTimestampProfile() {
+        log_write("\t[%s] time taken: %.2fs %.2fms\n", m_name.c_str(), m_ts.GetSecondsD(), m_ts.GetMsD());
+    }
+
+private:
+    const std::string m_name;
+    TimeStamp m_ts{};
+};
+
+#define SCOPED_TIMESTAMP(name) sphaira::utils::ScopedTimestampProfile ANONYMOUS_VARIABLE(SCOPE_PROFILE_STATE_){name};
+
+} // namespace sphaira::utils