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[compiler-rt][fuzzer] Reland "SetThreadName windows implementation" #83562

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merged 1 commit into from
Mar 7, 2024
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[compiler-rt][fuzzer] Reland "SetThreadName windows implementation" #83562

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25 changes: 21 additions & 4 deletions compiler-rt/lib/fuzzer/FuzzerUtilWindows.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -21,10 +21,15 @@
#include <signal.h>
#include <stdio.h>
#include <sys/types.h>
// clang-format off
#include <windows.h>

// This must be included after windows.h.
// These must be included after windows.h.
// archicture need to be set before including
// libloaderapi
#include <libloaderapi.h>
#include <stringapiset.h>
#include <psapi.h>
// clang-format on

namespace fuzzer {

Expand Down Expand Up @@ -234,8 +239,20 @@ size_t PageSize() {
}

void SetThreadName(std::thread &thread, const std::string &name) {
// TODO ?
// to UTF-8 then SetThreadDescription ?
typedef HRESULT(WINAPI * proc)(HANDLE, PCWSTR);
HMODULE kbase = GetModuleHandleA("KernelBase.dll");
proc ThreadNameProc =
reinterpret_cast<proc>(GetProcAddress(kbase, "SetThreadDescription"));
if (proc) {
std::wstring buf;
auto sz = MultiByteToWideChar(CP_UTF8, 0, name.data(), -1, nullptr, 0);
if (sz > 0) {
buf.resize(sz);
if (MultiByteToWideChar(CP_UTF8, 0, name.data(), -1, &buf[0], sz) > 0) {
(void)ThreadNameProc(thread.native_handle(), buf.c_str());
}
}
}
}

} // namespace fuzzer
Expand Down