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Fix thread naming on Linux, which limits names to 15 bytes.
- In `SetCurrentThreadName`, when on Linux, truncate to 15 bytes, as (at least on glibc) `pthread_set_name_np` will otherwise return `ERANGE` and do nothing. - Also, add logging in case `pthread_set_name_np` returns an error anyway. This is Linux-specific, as the Apple and BSD versions of `pthread_set_name_np return `void`. - Change the name for CPU threads in multi-core mode from "yuzu:CoreCPUThread_N" (19 bytes) to "yuzu:CPUCore_N" (14 bytes) so it fits into the Linux limit. Some other thread names are also cut off, but I didn't bother addressing them as you can guess them from the truncated versions. For a CPU thread, truncation means you can't see which core it is!
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@ -2,6 +2,8 @@
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include "common/common_funcs.h"
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#include "common/logging/log.h"
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#include "common/thread.h"
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#ifdef __APPLE__
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#include <mach/mach.h>
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@ -18,6 +20,7 @@
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#ifndef _WIN32
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#include <unistd.h>
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#endif
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#include <string>
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#ifdef __FreeBSD__
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#define cpu_set_t cpuset_t
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@ -64,6 +67,14 @@ void SetCurrentThreadName(const char* name) {
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pthread_set_name_np(pthread_self(), name);
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#elif defined(__NetBSD__)
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pthread_setname_np(pthread_self(), "%s", (void*)name);
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#elif defined(__linux__)
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// Linux limits thread names to 15 characters and will outright reject any
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// attempt to set a longer name with ERANGE.
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std::string truncated(name, std::min(strlen(name), static_cast<size_t>(15)));
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if (int e = pthread_setname_np(pthread_self(), truncated.c_str())) {
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errno = e;
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LOG_ERROR(Common, "Failed to set thread name to '{}': {}", truncated, GetLastErrorMsg());
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}
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#else
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pthread_setname_np(pthread_self(), name);
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#endif
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