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Changed TlsData::get to read TLS slots directly from TEB on Windows x86/x64. (#461)

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Branimir Karadžić
2026-10-15 17:36:45 -07:00
committed by GitHub
parent 983e0b9af7
commit c75bc2f956
4 changed files with 170 additions and 0 deletions
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93
tests/thread_test.cpp
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@@ -72,4 +72,97 @@ TEST_CASE("Thread", "")
}
}
static constexpr uint32_t kNumTlsData = 80;
struct TlsDataCtx
{
bx::TlsData* tls;
uint32_t seed;
uint32_t numErrors;
};
static int32_t tlsDataThread(bx::Thread* _thread, void* _userData)
{
BX_UNUSED(_thread);
TlsDataCtx& ctx = *(TlsDataCtx*)_userData;
for (uint32_t ii = 0; ii < kNumTlsData; ++ii)
{
ctx.numErrors += NULL != ctx.tls[ii].get();
ctx.tls[ii].set( (void*)uintptr_t(ctx.seed + ii) );
}
for (uint32_t jj = 0; jj < 1000; ++jj)
{
for (uint32_t ii = 0; ii < kNumTlsData; ++ii)
{
ctx.numErrors += uintptr_t(ctx.seed + ii) != uintptr_t(ctx.tls[ii].get() );
}
}
return bx::kExitSuccess;
}
TEST_CASE("TlsData", "")
{
bx::TlsData* tls = new bx::TlsData[kNumTlsData];
for (uint32_t ii = 0; ii < kNumTlsData; ++ii)
{
tls[ii].set( (void*)uintptr_t(0x1000 + ii) );
}
TlsDataCtx ctx[4];
bx::Thread thread[4];
for (uint32_t ii = 0; ii < BX_COUNTOF(thread); ++ii)
{
ctx[ii] = { tls, (ii + 1) << 16, 0 };
thread[ii].init(tlsDataThread, &ctx[ii]);
}
for (uint32_t ii = 0; ii < BX_COUNTOF(thread); ++ii)
{
thread[ii].shutdown();
REQUIRE(0 == ctx[ii].numErrors);
}
for (uint32_t ii = 0; ii < kNumTlsData; ++ii)
{
REQUIRE(uintptr_t(0x1000 + ii) == uintptr_t(tls[ii].get() ) );
}
delete [] tls;
}
static thread_local void* s_threadLocal;
BX_NO_INLINE void* getTlsData(const bx::TlsData& _tls)
{
return _tls.get();
}
BX_NO_INLINE void* getThreadLocal()
{
return s_threadLocal;
}
TEST_CASE("TlsData-bench", "[.][!benchmark]")
{
bx::TlsData tls;
tls.set(&tls);
s_threadLocal = &tls;
BENCHMARK("TlsData::get")
{
return getTlsData(tls);
};
BENCHMARK("thread_local")
{
return getThreadLocal();
};
}
#endif // BX_CONFIG_SUPPORTS_THREADING