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-rw-r--r--src/common/util.cpp17
1 files changed, 17 insertions, 0 deletions
diff --git a/src/common/util.cpp b/src/common/util.cpp
index 2a2f50c4f..74f33fbb6 100644
--- a/src/common/util.cpp
+++ b/src/common/util.cpp
@@ -34,6 +34,8 @@
#include <gnu/libc-version.h>
#endif
+#include "unbound.h"
+
#include "include_base_utils.h"
#include "file_io_utils.h"
#include "wipeable_string.h"
@@ -521,6 +523,18 @@ std::string get_nix_version_display_string()
return std::error_code(code, std::system_category());
}
+ static bool unbound_built_with_threads()
+ {
+ ub_ctx *ctx = ub_ctx_create();
+ if (!ctx) return false; // cheat a bit, should not happen unless OOM
+ ub_ctx_zone_add(ctx, "monero", "unbound"); // this calls ub_ctx_finalize first, then errors out with UB_SYNTAX
+ // if no threads, bails out early with UB_NOERROR, otherwise fails with UB_AFTERFINAL id already finalized
+ bool with_threads = ub_ctx_async(ctx, 1) != 0; // UB_AFTERFINAL is not defined in public headers, check any error
+ ub_ctx_delete(ctx);
+ MINFO("libunbound was built " << (with_threads ? "with" : "without") << " threads");
+ return with_threads;
+ }
+
bool sanitize_locale()
{
// boost::filesystem throws for "invalid" locales, such as en_US.UTF-8, or kjsdkfs,
@@ -563,6 +577,9 @@ std::string get_nix_version_display_string()
OPENSSL_init_ssl(0, NULL);
#endif
+ if (!unbound_built_with_threads())
+ MCLOG_RED(el::Level::Warning, "global", "libunbound was not built with threads enabled - crashes may occur");
+
return true;
}
void set_strict_default_file_permissions(bool strict)