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Fix boehmgc-coroutine-sp-fallback.diff
for FreeBSD
Our FreeBSD headers have `pthread_getattr_np`, but we get a link-time
error that is missing. The good news is that there is another similar
function which does exist, and the upstream project elsewhere does just
the [fallback code] we need.
As the fallback code indicates, the two functions are not identical
however as the other one needs explicit initialization. NetBSD supports
both in fact, and its [manpage] is therefore a good
resource on what the differences are.
[fallback code]: 07a6d0ee88/os_dep.c (L1266-L1272)
[manpage]: https://man.netbsd.org/pthread_attr_get_np.3
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parent
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1 changed files with 8 additions and 2 deletions
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@ -59,12 +59,18 @@ index b5d71e62..aed7b0bf 100644
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GC_bool found_me = FALSE;
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size_t nthreads = 0;
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int i;
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@@ -851,6 +853,31 @@ GC_INNER void GC_push_all_stacks(void)
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@@ -851,6 +853,37 @@ GC_INNER void GC_push_all_stacks(void)
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hi = p->altstack + p->altstack_size;
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/* FIXME: Need to scan the normal stack too, but how ? */
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/* FIXME: Assume stack grows down */
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+ } else {
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+ if (pthread_getattr_np(p->id, &pattr)) {
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+#ifdef HAVE_PTHREAD_ATTR_GET_NP
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+ if (!pthread_attr_init(&pattr)
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+ || !pthread_attr_get_np(p->id, &pattr))
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+#else /* HAVE_PTHREAD_GETATTR_NP */
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+ if (pthread_getattr_np(p->id, &pattr))
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+#endif
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+ {
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+ ABORT("GC_push_all_stacks: pthread_getattr_np failed!");
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+ }
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+ if (pthread_attr_getstacksize(&pattr, &stack_limit)) {
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