Merge pull request #30 from Trinitou/unlikely

Add CLAP_HELPERS_UNLIKELY
free-audio · Nov 23, 2023 · 2cc2f28 · 2cc2f28
2 parents 4a2e3ee + 2851221
commit 2cc2f28
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Showing 2 changed files with 10 additions and 2 deletions.
diff --git a/include/clap/helpers/host.hxx b/include/clap/helpers/host.hxx
@@ -2,6 +2,7 @@
 #include <iostream>
 
 #include "host.hh"
+#include "macros.hh"
 
 namespace clap { namespace helpers {
 
@@ -349,15 +350,15 @@ namespace clap { namespace helpers {
    template <MisbehaviourHandler h, CheckingLevel l>
    Host<h, l> &Host<h, l>::from(const clap_host *host) noexcept {
       if constexpr (l >= CheckingLevel::Minimal) {
-         if (!host) [[unlikely]] {
+         if (!host) CLAP_HELPERS_UNLIKELY {
             std::cerr << "Passed an null host pointer" << std::endl;
             std::terminate();
          }
       }
 
       auto self = static_cast<Host *>(host->host_data);
       if constexpr (l >= CheckingLevel::Minimal) {
-         if (!self) [[unlikely]] {
+         if (!self) CLAP_HELPERS_UNLIKELY {
             std::cerr << "Passed an invalid host pointer because the host_data is null"
                       << std::endl;
             std::terminate();

diff --git a/include/clap/helpers/macros.hh b/include/clap/helpers/macros.hh
@@ -0,0 +1,7 @@
+#pragma once
+
+#if defined(__cplusplus) && __cplusplus >= 202002L
+#   define CLAP_HELPERS_UNLIKELY [[unlikely]]
+#else
+#   define CLAP_HELPERS_UNLIKELY
+#endif