From 658eb675df47e041d5714fe52bc3bdb2e1d30302 Mon Sep 17 00:00:00 2001
From: Steffen Winter <steffen.winter@proton.me>
Date: Fri, 1 Mar 2024 18:52:58 +0100
Subject: [PATCH] Drop support for GCC 10

---
 Makefile     |  2 +-
 README.md    |  8 ++++----
 src/btop.cpp | 26 +++++---------------------
 3 files changed, 10 insertions(+), 26 deletions(-)

diff --git a/Makefile b/Makefile
index 03aea89..a30df07 100644
--- a/Makefile
+++ b/Makefile
@@ -79,7 +79,7 @@ ifeq ($(CXX_IS_CLANG),true)
 		CLANG_WORKS := true
 	endif
 else
-	ifneq ($(shell test $(CXX_VERSION_MAJOR) -lt 10; echo $$?),0)
+	ifneq ($(shell test $(CXX_VERSION_MAJOR) -lt 11; echo $$?),0)
 		GCC_WORKS := true
 	endif
 endif
diff --git a/README.md b/README.md
index 5e01373..a70badd 100644
--- a/README.md
+++ b/README.md
@@ -354,7 +354,7 @@ If you have an AMD GPU `rocm_smi_lib` is required, which may or may not be packa
 
 ## Compilation Linux
 
-   Requires at least GCC 10 or Clang 16.
+   Requires at least GCC 11 or Clang 16.
 
    The makefile also needs GNU coreutils and `sed` (should already be installed on any modern distribution).
 
@@ -552,7 +552,7 @@ If you have an AMD GPU `rocm_smi_lib` is required, which may or may not be packa
 
 ## Compilation macOS OSX
 
-   Requires at least GCC 10 or Clang 16.
+   Requires at least GCC 11 or Clang 16.
 
    With GCC, version 12 (or better) is needed for macOS Ventura. If you get linker errors on Ventura you'll need to upgrade your command line tools (Version 14.0) is bugged.
 
@@ -723,7 +723,7 @@ If you have an AMD GPU `rocm_smi_lib` is required, which may or may not be packa
 
 ## Compilation FreeBSD
 
-   Requires at least GCC 10 or Clang 16.
+   Requires at least GCC 11 or Clang 16.
 
    Note that GNU make (`gmake`) is required to compile on FreeBSD.
 
@@ -904,7 +904,7 @@ If you have an AMD GPU `rocm_smi_lib` is required, which may or may not be packa
 
 ## Compilation OpenBSD
 
-   Requires at least GCC 10.
+   Requires at least GCC 11.
 
    Note that GNU make (`gmake`) is required to compile on OpenBSD.
 
diff --git a/src/btop.cpp b/src/btop.cpp
index 8eae107..72bade5 100644
--- a/src/btop.cpp
+++ b/src/btop.cpp
@@ -33,17 +33,13 @@ tab-size = 4
 #include <tuple>
 #include <regex>
 #include <chrono>
+#include <semaphore>
 #include <utility>
 #ifdef __APPLE__
 	#include <CoreFoundation/CoreFoundation.h>
 	#include <mach-o/dyld.h>
 	#include <limits.h>
 #endif
-#if !defined(__clang__) && __GNUC__ < 11
-	#include <semaphore.h>
-#else
-	#include <semaphore>
-#endif
 
 #include "btop_shared.hpp"
 #include "btop_tools.hpp"
@@ -424,18 +420,7 @@ namespace Runner {
 	atomic<bool> redraw (false);
 	atomic<bool> coreNum_reset (false);
 
-	//* Setup semaphore for triggering thread to do work
-#if !defined(__clang__) && __GNUC__ < 11
-	sem_t do_work;
-	inline void thread_sem_init() { sem_init(&do_work, 0, 0); }
-	inline void thread_wait() { sem_wait(&do_work); }
-	inline void thread_trigger() { sem_post(&do_work); }
-#else
-	std::binary_semaphore do_work(0);
-	inline void thread_sem_init() { ; }
-	inline void thread_wait() { do_work.acquire(); }
-	inline void thread_trigger() { do_work.release(); }
-#endif
+	std::binary_semaphore sem { 0 };
 
 	//* RAII wrapper for pthread_mutex locking
 	class thread_lock {
@@ -553,7 +538,7 @@ namespace Runner {
 
 		//* ----------------------------------------------- THREAD LOOP -----------------------------------------------
 		while (not Global::quitting) {
-			thread_wait();
+			sem.acquire();
 			atomic_wait_for(active, true, 5000);
 			if (active) {
 				Global::exit_error_msg = "Runner thread failed to get active lock!";
@@ -840,7 +825,7 @@ namespace Runner {
 
 			if (Menu::active and not current_conf.background_update) Global::overlay.clear();
 
-			thread_trigger();
+			sem.release();
 			atomic_wait_for(active, false, 10);
 		}
 
@@ -868,7 +853,7 @@ namespace Runner {
 					clean_quit(1);
 				}
 			}
-			thread_trigger();
+			sem.release();
 			atomic_wait_for(active, false, 100);
 			atomic_wait_for(active, true, 100);
 		}
@@ -1077,7 +1062,6 @@ int main(int argc, char **argv) {
 	pthread_sigmask(SIG_BLOCK, &mask, &Input::signal_mask);
 
 	//? Start runner thread
-	Runner::thread_sem_init();
 	if (pthread_create(&Runner::runner_id, nullptr, &Runner::_runner, nullptr) != 0) {
 		Global::exit_error_msg = "Failed to create _runner thread!";
 		clean_quit(1);