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varnishd: truncate thread name on Linux #4211

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merged 1 commit into from
Oct 14, 2024
Merged

varnishd: truncate thread name on Linux #4211

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18 changes: 17 additions & 1 deletion bin/varnishd/cache/cache_main.c
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Original file line number Diff line number Diff line change
Expand Up @@ -130,6 +130,22 @@ THR_GetWorker(void)

static pthread_key_t name_key;

static void
thr_setname_generic(const char *name)
{
char buf[16];

/* The Linux kernel enforces a strict limitation of 15 bytes name,
* truncate the name if we would overflow it.
*/
if (strlen(name) > 15) {
bprintf(buf, "%.14s~", name);
name = buf;
}

PTOK(pthread_setname_np(pthread_self(), name));
}

void
THR_SetName(const char *name)
{
Expand All @@ -140,7 +156,7 @@ THR_SetName(const char *name)
#elif defined(__NetBSD__)
(void)pthread_setname_np(pthread_self(), "%s", (char *)(uintptr_t)name);
#else
(void)pthread_setname_np(pthread_self(), name);
thr_setname_generic(name);
#endif
}

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