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Thread-safety at VST level

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This commit is contained in:
Jean Pierre Cimalando 2021-02-01 22:51:24 +01:00
parent 1d6b06aa2e
commit e0a7fb1dbc
3 changed files with 14 additions and 8 deletions
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3
vst/CMakeLists.txt
View file

@ -58,8 +58,9 @@ if(WIN32)
target_sources(${VSTPLUGIN_PRJ_NAME} PRIVATE vst3.def)
endif()
target_link_libraries(${VSTPLUGIN_PRJ_NAME}
PRIVATE ${PROJECT_NAME}::${PROJECT_NAME}
PRIVATE sfizz::sfizz
PRIVATE sfizz::editor
PRIVATE sfizz::spin_mutex
PRIVATE sfizz::pugixml sfizz::filesystem)
target_include_directories(${VSTPLUGIN_PRJ_NAME}
PRIVATE "${CMAKE_CURRENT_BINARY_DIR}")

15
vst/SfizzVstProcessor.cpp
View file

@ -138,7 +138,7 @@ tresult PLUGIN_API SfizzVstProcessor::setState(IBStream* stream)
}
//
std::lock_guard<std::mutex> lock(_processMutex);
std::lock_guard<SpinMutex> lock(_processMutex);
_state = s;
syncStateToSynth();
@ -148,7 +148,7 @@ tresult PLUGIN_API SfizzVstProcessor::setState(IBStream* stream)
tresult PLUGIN_API SfizzVstProcessor::getState(IBStream* stream)
{
std::lock_guard<std::mutex> lock(_processMutex);
std::lock_guard<SpinMutex> lock(_processMutex);
return _state.store(stream);
}
@ -224,7 +224,7 @@ tresult PLUGIN_API SfizzVstProcessor::process(Vst::ProcessData& data)
for (unsigned c = 0; c < numChannels; ++c)
outputs[c] = data.outputs[0].channelBuffers32[c];
std::unique_lock<std::mutex> lock(_processMutex, std::try_to_lock);
std::unique_lock<SpinMutex> lock(_processMutex, std::try_to_lock);
if (!lock.owns_lock()) {
for (unsigned c = 0; c < numChannels; ++c)
@ -515,7 +515,7 @@ tresult PLUGIN_API SfizzVstProcessor::notify(Vst::IMessage* message)
if (result != kResultTrue)
return result;
std::unique_lock<std::mutex> lock(_processMutex);
std::unique_lock<SpinMutex> lock(_processMutex);
_state.sfzFile.assign(static_cast<const char *>(data), size);
loadSfzFileOrDefault(*_synth, _state.sfzFile);
lock.unlock();
@ -533,7 +533,7 @@ tresult PLUGIN_API SfizzVstProcessor::notify(Vst::IMessage* message)
if (result != kResultTrue)
return result;
std::unique_lock<std::mutex> lock(_processMutex);
std::unique_lock<SpinMutex> lock(_processMutex);
_state.scalaFile.assign(static_cast<const char *>(data), size);
_synth->loadScalaFile(_state.scalaFile);
lock.unlock();
@ -601,23 +601,28 @@ void SfizzVstProcessor::doBackgroundWork()
if (!std::strcmp(id, "SetNumVoices")) {
int32 value = *msg->payload<int32>();
std::lock_guard<SpinMutex> lock(_processMutex);
_synth->setNumVoices(value);
}
else if (!std::strcmp(id, "SetOversampling")) {
int32 value = *msg->payload<int32>();
std::lock_guard<SpinMutex> lock(_processMutex);
_synth->setOversamplingFactor(1 << value);
}
else if (!std::strcmp(id, "SetPreloadSize")) {
int32 value = *msg->payload<int32>();
std::lock_guard<SpinMutex> lock(_processMutex);
_synth->setPreloadSize(value);
}
else if (!std::strcmp(id, "CheckShouldReload")) {
if (_synth->shouldReloadFile()) {
fprintf(stderr, "[Sfizz] sfz file has changed, reloading\n");
std::lock_guard<SpinMutex> lock(_processMutex);
loadSfzFileOrDefault(*_synth, _state.sfzFile);
}
else if (_synth->shouldReloadScala()) {
fprintf(stderr, "[Sfizz] scala file has changed, reloading\n");
std::lock_guard<SpinMutex> lock(_processMutex);
_synth->loadScalaFile(_state.scalaFile);
}
}

4
vst/SfizzVstProcessor.h
View file

@ -10,8 +10,8 @@
#include "ring_buffer/ring_buffer.h"
#include "public.sdk/source/vst/vstaudioeffect.h"
#include <sfizz.hpp>
#include <SpinMutex.h>
#include <thread>
#include <mutex>
#include <memory>
#include <cstdlib>
@ -65,7 +65,7 @@ private:
Ring_Buffer _fifoToWorker;
RTSemaphore _semaToWorker;
Ring_Buffer _fifoMessageFromUi;
std::mutex _processMutex;
SpinMutex _processMutex;
// file modification periodic checker
uint32 _fileChangeCounter = 0;