u_debug_refcnt: Don't loop for initial refcounts if the initial value is huge
Some components use very large refcounts to bypass atomics in single-threaded cases, and this produces near-infinite loops when these resources are created. Reviewed-by: Sil Vilerino <sivileri@microsoft.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16182>
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@ -174,10 +174,12 @@ debug_reference_slowpath(const struct pipe_reference *p,
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/* this is here to provide a gradual change even if we don't see
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* the initialization
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*/
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for (i = 1; i <= refcnt - change; ++i) {
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fprintf(stream, "<%s> %p %u AddRef %u\n", buf, (void *) p,
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serial, i);
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debug_backtrace_print(stream, frames, STACK_LEN);
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if (refcnt <= 10) {
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for (i = 1; i <= refcnt - change; ++i) {
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fprintf(stream, "<%s> %p %u AddRef %u\n", buf, (void *) p,
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serial, i);
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debug_backtrace_print(stream, frames, STACK_LEN);
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}
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}
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}
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