diff options
| -rw-r--r-- | src/libutil/affinity.cc | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/src/libutil/affinity.cc b/src/libutil/affinity.cc index e3cf33b58..ac2295e4a 100644 --- a/src/libutil/affinity.cc +++ b/src/libutil/affinity.cc @@ -12,6 +12,17 @@ namespace nix { #if __linux__ static bool didSaveAffinity = false; static cpu_set_t savedAffinity; + +std::ostream& operator<<(std::ostream &os, const cpu_set_t &cset) +{ + auto count = CPU_COUNT(&cset); + for (int i=0; i < count; ++i) + { + os << (CPU_ISSET(i,&cset) ? "1" : "0"); + } + + return os; +} #endif @@ -47,7 +58,11 @@ void restoreAffinity() #if __linux__ if (!didSaveAffinity) return; if (sched_setaffinity(0, sizeof(cpu_set_t), &savedAffinity) == -1) - _printError("failed to restore affinity"); + { + std::ostringstream oss; + oss << savedAffinity; + printError("failed to restore CPU affinity %1%", oss.str()); + } #endif } |