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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>
This commit is contained in:
Jesse Natalie 2022-04-26 12:41:12 -07:00 committed by Marge Bot
parent 0bcb5f919e
commit d8024b2504
1 changed files with 6 additions and 4 deletions
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10
src/util/u_debug_refcnt.c
View File

@ -174,10 +174,12 @@ debug_reference_slowpath(const struct pipe_reference *p,
/* this is here to provide a gradual change even if we don't see
* the initialization
*/
for (i = 1; i <= refcnt - change; ++i) {
fprintf(stream, "<%s> %p %u AddRef %u\n", buf, (void *) p,
serial, i);
debug_backtrace_print(stream, frames, STACK_LEN);
if (refcnt <= 10) {
for (i = 1; i <= refcnt - change; ++i) {
fprintf(stream, "<%s> %p %u AddRef %u\n", buf, (void *) p,
serial, i);
debug_backtrace_print(stream, frames, STACK_LEN);
}
}
}