diff options
| -rw-r--r-- | src/common/util.cpp | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/common/util.cpp b/src/common/util.cpp index 80792249c..bcea70558 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" @@ -514,6 +516,18 @@ 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, @@ -556,6 +570,9 @@ 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) |