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swiftshader
Commit 518f4384 by Ben Clayton
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ComputeProgram: Remove data field to fix race.

data is the 0th argument to the coroutine. There's no good reason why this was stored as a field when all other arguments were fetched in ComputeProgram::emit(). Having this as a field caused a data race in the rr::Variable materializing, as the destructor of this field was called outside the reactor mutex. Test: dEQP-VK.synchronization.internally_synchronized_objects.pipeline_cache_compute Bug: b/133127573 Change-Id: I44545b71714fdebd8f1150bf7d6325f7d4d4d3eb Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/32569 Kokoro-Presubmit: kokoro <noreply+kokoro@google.com> Tested-by: 's avatarBen Clayton <bclayton@google.com> Reviewed-by: 's avatarNicolas Capens <nicolascapens@google.com>
parent 3429bb56
Showing with 8 additions and 10 deletions
src/Pipeline/ComputeProgram.cpp
......@@ -28,8 +28,7 @@ namespace
namespace sw
{
ComputeProgram::ComputeProgram(SpirvShader const *shader, vk::PipelineLayout const *pipelineLayout, const vk::DescriptorSet::Bindings &descriptorSets)
: data(Arg<0>()),
shader(shader),
: shader(shader),
pipelineLayout(pipelineLayout),
descriptorSets(descriptorSets)
{
......@@ -47,7 +46,7 @@ namespace sw
shader->emitEpilog(&routine);
}
void ComputeProgram::setWorkgroupBuiltins(SpirvRoutine* routine, Int workgroupID[3])
void ComputeProgram::setWorkgroupBuiltins(Pointer<Byte> data, SpirvRoutine* routine, Int workgroupID[3])
{
setInputBuiltin(routine, spv::BuiltInNumWorkgroups, [&](const SpirvShader::BuiltinMapping& builtin, Array<SIMD::Float>& value)
{
......@@ -106,7 +105,7 @@ namespace sw
});
}
void ComputeProgram::setSubgroupBuiltins(SpirvRoutine* routine, Int workgroupID[3], SIMD::Int localInvocationIndex, Int subgroupIndex)
void ComputeProgram::setSubgroupBuiltins(Pointer<Byte> data, SpirvRoutine* routine, Int workgroupID[3], SIMD::Int localInvocationIndex, Int subgroupIndex)
{
Int4 numWorkgroups = *Pointer<Int4>(data + OFFSET(Data, numWorkgroups));
Int4 workgroupSize = *Pointer<Int4>(data + OFFSET(Data, workgroupSize));
......@@ -163,6 +162,7 @@ namespace sw
void ComputeProgram::emit(SpirvRoutine* routine)
{
Pointer<Byte> data = Arg<0>();
Int workgroupX = Arg<1>();
Int workgroupY = Arg<2>();
Int workgroupZ = Arg<3>();
......@@ -179,7 +179,7 @@ namespace sw
Int invocationsPerWorkgroup = *Pointer<Int>(data + OFFSET(Data, invocationsPerWorkgroup));
Int workgroupID[3] = {workgroupX, workgroupY, workgroupZ};
setWorkgroupBuiltins(routine, workgroupID);
setWorkgroupBuiltins(data, routine, workgroupID);
For(Int i = 0, i < subgroupCount, i++)
{
......@@ -191,7 +191,7 @@ namespace sw
// Disable lanes where (invocationIDs >= invocationsPerWorkgroup)
auto activeLaneMask = CmpLT(localInvocationIndex, SIMD::Int(invocationsPerWorkgroup));
setSubgroupBuiltins(routine, workgroupID, localInvocationIndex, subgroupIndex);
setSubgroupBuiltins(data, routine, workgroupID, localInvocationIndex, subgroupIndex);
shader->emit(routine, activeLaneMask, descriptorSets);
}
......
src/Pipeline/ComputeProgram.hpp
......@@ -64,12 +64,10 @@ namespace sw
protected:
void emit(SpirvRoutine* routine);
void setWorkgroupBuiltins(SpirvRoutine* routine, Int workgroupID[3]);
void setSubgroupBuiltins(SpirvRoutine* routine, Int workgroupID[3], SIMD::Int localInvocationIndex, Int subgroupIndex);
void setWorkgroupBuiltins(Pointer<Byte> data, SpirvRoutine* routine, Int workgroupID[3]);
void setSubgroupBuiltins(Pointer<Byte> data, SpirvRoutine* routine, Int workgroupID[3], SIMD::Int localInvocationIndex, Int subgroupIndex);
void setInputBuiltin(SpirvRoutine* routine, spv::BuiltIn id, std::function<void(const SpirvShader::BuiltinMapping& builtin, Array<SIMD::Float>& value)> cb);
Pointer<Byte> data; // argument 0
struct Data
{
vk::DescriptorSet::Bindings descriptorSets;
......
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