81 lines
3.1 KiB
C++
81 lines
3.1 KiB
C++
// native_bridge/tests/seh_channel_test.cpp
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// G3.3: SEH per-channel crash isolation. A plugin whose processAudioBlock
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// faults (access violation) must be caught by SafeProcessChannel -> renderAll
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// mutes the channel instead of taking down the whole bridge process.
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// Assert-based, no framework. Includes the engine .cpp (like shm_selfcheck).
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#include "../include/NativeInstrumentEngine.h"
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#include "../src/NativeInstrumentEngine.cpp"
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#include <cassert>
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#include <cstdio>
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#include <cstring>
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class CrashingStub : public INativeInstrument {
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public:
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bool init(double, uint32_t) override { return true; }
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void selectProgram(uint32_t, uint32_t, uint32_t) override {}
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void noteOn(uint32_t, uint32_t, float, uint32_t) override {}
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void noteOff(uint32_t, uint32_t, uint32_t) override {}
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void controlChange(uint32_t, uint32_t, uint32_t) override {}
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void programChange(uint32_t, uint32_t) override {}
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void pitchBend(uint32_t, uint32_t) override {}
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bool openGUI(void*) override { return false; }
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void closeGUI() override {}
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void processAudioBlock(float*, float*, uint32_t) override {
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volatile int* p = nullptr;
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*p = 42; // deliberate access violation
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}
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};
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class OkStub : public INativeInstrument {
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public:
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bool init(double, uint32_t) override { return true; }
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void selectProgram(uint32_t, uint32_t, uint32_t) override {}
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void noteOn(uint32_t, uint32_t, float, uint32_t) override {}
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void noteOff(uint32_t, uint32_t, uint32_t) override {}
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void controlChange(uint32_t, uint32_t, uint32_t) override {}
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void programChange(uint32_t, uint32_t) override {}
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void pitchBend(uint32_t, uint32_t) override {}
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bool openGUI(void*) override { return false; }
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void closeGUI() override {}
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void processAudioBlock(float* outL, float* outR, uint32_t n) override {
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for (uint32_t i = 0; i < n; ++i) { outL[i] = 1.0f; outR[i] = 2.0f; }
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}
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};
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int main() {
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// 1. Faulting plugin: SEH catches the AV, process survives, returns false.
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{
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float L[64] = {}, R[64] = {};
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CrashingStub stub;
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bool ok = SafeProcessChannel(&stub, L, R, 64);
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assert(!ok);
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// Block left untouched (renderAll continues without this channel).
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bool allZero = true;
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for (float f : L) if (f != 0.0f) allZero = false;
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assert(allZero);
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}
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// 2. Healthy plugin passes through unchanged.
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{
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float L[64] = {}, R[64] = {};
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OkStub stub;
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bool ok = SafeProcessChannel(&stub, L, R, 64);
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assert(ok);
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assert(L[0] == 1.0f && R[0] == 2.0f);
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}
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// 3. Manager crash-mute flags: set, read, and renderAll skips a crashed
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// channel (no exception escapes into the audio loop).
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{
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InstrumentEngineManager mgr;
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assert(!mgr.isCrashed(3));
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mgr.markCrashed(3);
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assert(mgr.isCrashed(3));
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assert(!mgr.isCrashed(4)); // other channels unaffected
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float L[64] = {}, R[64] = {};
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mgr.renderAll(L, R, 64); // crashed + unassigned: no-op, no crash
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assert(L[0] == 0.0f);
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}
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std::printf("SEH_CHANNEL_TEST PASS\n");
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return 0;
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}
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