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Add OpenBSD support in CPalThread #129057

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Merged
jkotas merged 3 commits into from
Jun 6, 2026
+13 −1
Merged

Add OpenBSD support in CPalThread #129057

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9a1fda6
Add OpenBSD support
sethjackson Jun 4, 2026
62e1672
Update src/coreclr/pal/src/thread/thread.cpp
sethjackson Jun 6, 2026
81bd365
Update src/coreclr/pal/src/thread/thread.cpp
sethjackson Jun 6, 2026
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14 changes: 13 additions & 1 deletion src/coreclr/pal/src/thread/thread.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1423,7 +1423,7 @@ CPalThread::ThreadEntry(
// vendor-modified Android kernels with strict SELinux policy) block
// sched_setaffinity even when passed a mask extracted via sched_getaffinity.
// Treat this as non-fatal — the thread will continue running on any
// available CPU rather than the originally affinitized one.
// available CPU rather than the originally affinitized one.
WARN("sched_setaffinity failed with EPERM/EACCES, ignoring\n");
}
else
Expand Down Expand Up @@ -2316,6 +2316,12 @@ CPalThread::GetStackBase()
#ifdef TARGET_APPLE
// This is a Mac specific method
stackBase = pthread_get_stackaddr_np(pthread_self());
#elif defined(TARGET_OPENBSD)
stack_t stack;
int status = pthread_stackseg_np(pthread_self(), &stack);
_ASSERT_MSG(status == 0, "pthread_stackseg_np call failed");

stackBase = stack.ss_sp;
#else
pthread_attr_t attr;
void* stackAddr;
Expand Down Expand Up @@ -2361,6 +2367,12 @@ CPalThread::GetStackLimit()
// This is a Mac specific method
stackLimit = ((BYTE *)pthread_get_stackaddr_np(pthread_self()) -
pthread_get_stacksize_np(pthread_self()));
#elif defined(TARGET_OPENBSD)
stack_t stack;
int status = pthread_stackseg_np(pthread_self(), &stack);
_ASSERT_MSG(status == 0, "pthread_stackseg_np call failed");

stackLimit = (void*)stack.ss_size;
#else
pthread_attr_t attr;
size_t stackSize;
Expand Down