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Diffstat (limited to 'boehmgc-coroutine-sp-fallback.diff')
| -rw-r--r-- | boehmgc-coroutine-sp-fallback.diff | 54 |
1 files changed, 0 insertions, 54 deletions
diff --git a/boehmgc-coroutine-sp-fallback.diff b/boehmgc-coroutine-sp-fallback.diff deleted file mode 100644 index a53b7f1f5..000000000 --- a/boehmgc-coroutine-sp-fallback.diff +++ /dev/null @@ -1,54 +0,0 @@ -diff --git a/pthread_stop_world.c b/pthread_stop_world.c -index 2b45489..0e6d8ef 100644 ---- a/pthread_stop_world.c -+++ b/pthread_stop_world.c -@@ -776,6 +776,8 @@ STATIC void GC_restart_handler(int sig) - /* world is stopped. Should not fail if it isn't. */ - GC_INNER void GC_push_all_stacks(void) - { -+ size_t stack_limit; -+ pthread_attr_t pattr; - GC_bool found_me = FALSE; - size_t nthreads = 0; - int i; -@@ -868,6 +870,40 @@ GC_INNER void GC_push_all_stacks(void) - hi = p->altstack + p->altstack_size; - # endif - /* FIXME: Need to scan the normal stack too, but how ? */ -+ } else { -+ #ifdef HAVE_PTHREAD_ATTR_GET_NP -+ if (pthread_attr_init(&pattr) != 0) { -+ ABORT("GC_push_all_stacks: pthread_attr_init failed!"); -+ } -+ if (pthread_attr_get_np(p->id, &pattr) != 0) { -+ ABORT("GC_push_all_stacks: pthread_attr_get_np failed!"); -+ } -+ #else -+ if (pthread_getattr_np(p->id, &pattr)) { -+ ABORT("GC_push_all_stacks: pthread_getattr_np failed!"); -+ } -+ #endif -+ if (pthread_attr_getstacksize(&pattr, &stack_limit)) { -+ ABORT("GC_push_all_stacks: pthread_attr_getstacksize failed!"); -+ } -+ if (pthread_attr_destroy(&pattr)) { -+ ABORT("GC_push_all_stacks: pthread_attr_destroy failed!"); -+ } -+ // When a thread goes into a coroutine, we lose its original sp until -+ // control flow returns to the thread. -+ // While in the coroutine, the sp points outside the thread stack, -+ // so we can detect this and push the entire thread stack instead, -+ // as an approximation. -+ // We assume that the coroutine has similarly added its entire stack. -+ // This could be made accurate by cooperating with the application -+ // via new functions and/or callbacks. -+ #ifndef STACK_GROWS_UP -+ if (lo >= hi || lo < hi - stack_limit) { // sp outside stack -+ lo = hi - stack_limit; -+ } -+ #else -+ #error "STACK_GROWS_UP not supported in boost_coroutine2 (as of june 2021), so we don't support it in Nix." -+ #endif - } - # ifdef STACKPTR_CORRECTOR_AVAILABLE - if (GC_sp_corrector != 0) |