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Fix Linux /sys cpu path to guess number of cores (#7064)

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viric 2024-05-04 15:26:53 +02:00 committed by GitHub
parent 03fb8a002d
commit fcd84a0f5a
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common/common.cpp
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@ -76,7 +76,7 @@ int32_t get_num_physical_cores() {
// enumerate the set of thread siblings, num entries is num cores // enumerate the set of thread siblings, num entries is num cores
std::unordered_set<std::string> siblings; std::unordered_set<std::string> siblings;
for (uint32_t cpu=0; cpu < UINT32_MAX; ++cpu) { for (uint32_t cpu=0; cpu < UINT32_MAX; ++cpu) {
std::ifstream thread_siblings("/sys/devices/system/cpu" std::ifstream thread_siblings("/sys/devices/system/cpu/cpu"
+ std::to_string(cpu) + "/topology/thread_siblings"); + std::to_string(cpu) + "/topology/thread_siblings");
if (!thread_siblings.is_open()) { if (!thread_siblings.is_open()) {
break; // no more cpus break; // no more cpus