internal: some minor fd/socket cleanups and make logging thread safe (#7123)

* bezier: dont loop on float values

Using a floating-point loop variable with a fixed increment can cause precision
errors over time due to the nature of floating-point arithmetic.
and cause undesired effects.

ex
iteration 1 = 0.10000000149011611938
iteration 2 = 0.20000000298023223877

eventually..

iteration 8 = 0.80000001192092895508
iteration 9 = 0.89999997615814208984

* hyprctl: close sockets on destruction

store socketpath and close the fd and unlink the socket path on exit.

* eventloopmgr: close the timerfd

close the timerfd on exit.

* debug: make logging thread safe

instead of opening and closing the logfile on each write open it on init
and close it on compositor exit. also add a mutex so accidently using
logging from a thread like the watchdog or similiar doesnt cause issues.

* xwl: clean up fd logic

check if the fd is actually opened before closing, and close the
pipesource FD on exit.

src/debug/Log.hpp

@@ -4,6 +4,7 @@
 #include <iostream>
 #include <fstream>
 #include <chrono>
+#include <mutex>
 #include "../includes.hpp"
 #include "../helpers/MiscFunctions.hpp"
 
@@ -22,6 +23,7 @@ enum LogLevel {
 
 namespace Debug {
     inline std::string     logFile;
+    inline std::ofstream   logOfs;
     inline int64_t* const* disableLogs   = nullptr;
     inline int64_t* const* disableTime   = nullptr;
     inline bool            disableStdout = false;
@@ -30,14 +32,18 @@ namespace Debug {
     inline int64_t* const* coloredLogs   = nullptr;
 
     inline std::string     rollingLog = ""; // rolling log contains the ROLLING_LOG_SIZE tail of the log
+    inline std::mutex      logMutex;
 
     void                   init(const std::string& IS);
+    void                   close();
 
     //
     void log(LogLevel level, std::string str);
 
     template <typename... Args>
     void log(LogLevel level, std::format_string<Args...> fmt, Args&&... args) {
+        std::lock_guard<std::mutex> guard(logMutex);
+
         if (level == TRACE && !trace)
             return;
 
@@ -66,5 +72,6 @@ namespace Debug {
         logMsg += std::vformat(fmt.get(), std::make_format_args(args...));
 
         log(level, logMsg);
+        logMutex.unlock();
     }
 };