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setStackSize: Warn when the desired stack size can't be set

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This commit is contained in:
Robert Hensing 2025-10-15 22:40:31 +02:00
parent f6aeca0522
commit 2349c3dbde
1 changed files with 10 additions and 0 deletions
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10
src/libutil/current-process.cc
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@ -65,6 +65,16 @@ void setStackSize(size_t stackSize)
struct rlimit limit;
if (getrlimit(RLIMIT_STACK, &limit) == 0 && static_cast<size_t>(limit.rlim_cur) < stackSize) {
savedStackSize = limit.rlim_cur;
if (limit.rlim_max < static_cast<rlim_t>(stackSize)) {
logger->log(
lvlWarn,
HintFmt(
"Stack size hard limit is %1%, which is less than the desired %2%. If possible, increase the hard limit, e.g. with 'ulimit -Hs %3%'.",
limit.rlim_max,
stackSize,
stackSize / 1024)
.str());
}
auto requestedSize = std::min(static_cast<rlim_t>(stackSize), limit.rlim_max);
limit.rlim_cur = requestedSize;
if (setrlimit(RLIMIT_STACK, &limit) != 0) {