342 lines
12 KiB
C
342 lines
12 KiB
C
// testEngineLua.c -- Lua on a context thread, driven the way a host drives calog:
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// register natives, open a context, fire-and-forget a script, and calogPump on the
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// host thread to service the script's native calls. Verifies host-thread dispatch,
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// the inline escape hatch, the sec-10 cross-thread callback, the error handler, and
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// concurrent contexts. Built under ASan+UBSan.
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#define _POSIX_C_SOURCE 200809L
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#include "calog.h"
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#include <stdatomic.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#define CHECK(cond, msg) checkImpl((cond), (msg), __FILE__, __LINE__)
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#define PUMP_LIMIT 4000 // ~2s at 0.5ms/iter, a generous upper bound
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static CalogT *calog = NULL;
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static _Atomic int64_t reportedValue = 0;
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static _Atomic uint64_t reportedCtxId = 0xFFFFu;
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static _Atomic uint64_t inlineCtxId = 0xFFFFu;
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static _Atomic int32_t bumpCount = 0;
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static _Atomic bool scriptDone = false;
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static _Atomic int32_t errorCount = 0;
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static _Atomic uint64_t errorCtxId = 0;
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static CalogFnT *_Atomic storedCb = NULL;
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static _Atomic int32_t matchCount = 0;
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static _Atomic int32_t mismatchCount = 0;
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static int32_t testsRun = 0;
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static int32_t testsFailed = 0;
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static void checkImpl(bool condition, const char *message, const char *file, int32_t line);
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static int32_t nativeBump(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData);
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static int32_t nativeCheckRuntime(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData);
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static int32_t nativeDone(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData);
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static int32_t nativeReport(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData);
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static int32_t nativeReportInline(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData);
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static int32_t nativeSetCb(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData);
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static void onError(uint64_t contextId, const char *message, void *userData);
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static void pumpUntilDone(void);
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static void testConcurrentContexts(void);
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static void testContextLoad(void);
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static void testCrossThreadCallback(void);
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static void testHostAndInlineNatives(void);
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static void testScriptError(void);
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static void testSingleThreadMultiRuntime(void);
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static void checkImpl(bool condition, const char *message, const char *file, int32_t line) {
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testsRun++;
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if (!condition) {
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testsFailed++;
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printf("FAIL %s:%d %s\n", file, line, message);
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}
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}
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static int32_t nativeBump(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData) {
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(void)args;
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(void)argCount;
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(void)userData;
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atomic_fetch_add(&bumpCount, 1);
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calogValueNil(result);
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return calogOkE;
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}
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static int32_t nativeCheckRuntime(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData) {
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(void)args;
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(void)argCount;
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// userData is the runtime this native was registered under. Run from a script and
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// serviced by calogPump, it must see calogCurrent() == that runtime -- which holds
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// only if pump presents the pumping thread as the pumped runtime's host, so one
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// thread can host several runtimes.
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if (calogCurrent() == (CalogT *)userData) {
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atomic_fetch_add(&matchCount, 1);
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} else {
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atomic_fetch_add(&mismatchCount, 1);
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}
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calogValueNil(result);
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return calogOkE;
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}
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static int32_t nativeDone(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData) {
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(void)args;
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(void)argCount;
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(void)userData;
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atomic_store(&scriptDone, true);
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calogValueNil(result);
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return calogOkE;
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}
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static int32_t nativeReport(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData) {
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(void)userData;
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calogValueNil(result);
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if (argCount != 1 || args[0].type != calogIntE) {
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return calogFail(result, calogErrArgE, "report expects one integer");
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}
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atomic_store(&reportedCtxId, calogCurrentId()); // should be 0 (host thread)
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atomic_store(&reportedValue, args[0].as.i);
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return calogOkE;
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}
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static int32_t nativeReportInline(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData) {
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(void)args;
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(void)argCount;
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(void)userData;
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atomic_store(&inlineCtxId, calogCurrentId()); // should be the script's context id
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calogValueNil(result);
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return calogOkE;
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}
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static int32_t nativeSetCb(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData) {
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(void)userData;
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calogValueNil(result);
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if (argCount != 1 || args[0].type != calogFnE) {
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return calogFail(result, calogErrArgE, "setCb expects one function");
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}
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calogFnRetain(args[0].as.fn);
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atomic_store(&storedCb, args[0].as.fn);
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return calogOkE;
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}
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static void onError(uint64_t contextId, const char *message, void *userData) {
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(void)message;
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(void)userData;
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atomic_store(&errorCtxId, contextId);
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atomic_fetch_add(&errorCount, 1);
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}
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// Pump the host thread until the running script signals done (or errors), bounded.
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static void pumpUntilDone(void) {
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struct timespec ts = { 0, 500000 }; // 0.5 ms
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int errorsBefore;
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int i;
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errorsBefore = atomic_load(&errorCount);
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for (i = 0; i < PUMP_LIMIT; i++) {
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calogPump(calog);
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if (atomic_load(&scriptDone) || atomic_load(&errorCount) != errorsBefore) {
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calogPump(calog); // one more sweep to drain trailing calls
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return;
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}
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nanosleep(&ts, NULL);
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}
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}
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static void testHostAndInlineNatives(void) {
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CalogContextT *ctx;
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ctx = calogContextOpen(calog, &calogLuaEngine);
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CHECK(ctx != NULL, "opened a Lua context");
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atomic_store(&scriptDone, false);
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calogContextEval(ctx, "report(42); reportInline(1); done()");
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pumpUntilDone();
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CHECK(atomic_load(&reportedValue) == 42, "host native received the argument");
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CHECK(atomic_load(&reportedCtxId) == 0, "default native ran on the host thread (id 0)");
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CHECK(atomic_load(&inlineCtxId) == calogContextId(ctx), "inline native ran on the script's own thread");
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calogContextClose(ctx);
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}
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static void testCrossThreadCallback(void) {
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CalogContextT *ctx;
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CalogFnT *callback;
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CalogValueT arg;
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CalogValueT result;
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int32_t status;
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ctx = calogContextOpen(calog, &calogLuaEngine);
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atomic_store(&scriptDone, false);
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atomic_store(&storedCb, NULL);
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calogContextEval(ctx, "setCb(function(x) return x + 100 end); done()");
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pumpUntilDone();
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callback = atomic_load(&storedCb);
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CHECK(callback != NULL, "a Lua closure was captured as a CalogFnT");
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// Invoke it from the host thread: it must marshal to the Lua context's thread
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// (sec 10). calogFnInvoke blocks-and-pumps the host queue while it waits.
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calogValueInt(&arg, 7);
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status = calogFnInvoke(callback, &arg, 1, &result);
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CHECK(status == calogOkE && result.type == calogIntE && result.as.i == 107, "cross-thread callable invoke routed to the owner");
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calogValueFree(&result);
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calogValueFree(&arg);
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calogFnRelease(callback);
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calogContextClose(ctx);
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}
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static void testScriptError(void) {
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CalogContextT *ctx;
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int32_t before;
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ctx = calogContextOpen(calog, &calogLuaEngine);
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before = atomic_load(&errorCount);
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atomic_store(&scriptDone, false);
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calogContextEval(ctx, "@@@ not valid lua @@@");
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pumpUntilDone();
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CHECK(atomic_load(&errorCount) == before + 1, "a fire-and-forget script error reached the error handler");
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CHECK(atomic_load(&errorCtxId) == calogContextId(ctx), "the error names the failing context");
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calogContextClose(ctx);
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}
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static void testConcurrentContexts(void) {
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CalogContextT *ctxs[3];
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struct timespec ts = { 0, 500000 };
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int32_t i;
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atomic_store(&bumpCount, 0);
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for (i = 0; i < 3; i++) {
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ctxs[i] = calogContextOpen(calog, &calogLuaEngine);
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calogContextEval(ctxs[i], "bump(); bump(); bump()");
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}
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for (i = 0; i < PUMP_LIMIT && atomic_load(&bumpCount) < 9; i++) {
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calogPump(calog);
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nanosleep(&ts, NULL);
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}
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CHECK(atomic_load(&bumpCount) == 9, "three concurrent contexts all dispatched to the host thread");
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for (i = 0; i < 3; i++) {
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calogContextClose(ctxs[i]);
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}
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}
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static void testContextLoad(void) {
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CalogContextT *ctx;
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struct timespec ts = { 0, 500000 };
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FILE *file;
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int32_t i;
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// Registration makes the Lua engine (extension "lua") a load candidate.
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calogRegisterEngine(calog, &calogLuaEngine);
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// A file whose extension matches a registered engine is found, loaded, and run.
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file = fopen("calogLoadTest.lua", "wb");
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CHECK(file != NULL, "wrote a temporary .lua script");
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if (file != NULL) {
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fputs("bump()", file);
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fclose(file);
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}
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atomic_store(&bumpCount, 0);
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ctx = calogContextLoad(calog, "calogLoadTest");
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CHECK(ctx != NULL, "calogContextLoad opened a context for the matching .lua file");
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for (i = 0; i < PUMP_LIMIT && atomic_load(&bumpCount) < 1; i++) {
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calogPump(calog);
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nanosleep(&ts, NULL);
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}
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CHECK(atomic_load(&bumpCount) == 1, "the loaded script ran on its new context");
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if (ctx != NULL) {
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calogContextClose(ctx);
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}
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remove("calogLoadTest.lua");
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// No file with a registered extension exists -> NULL.
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ctx = calogContextLoad(calog, "calogNoSuchScript");
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CHECK(ctx == NULL, "calogContextLoad returns NULL when no file matches");
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}
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static void testSingleThreadMultiRuntime(void) {
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CalogT *calogB;
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CalogContextT *ctxA;
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CalogContextT *ctxB;
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struct timespec ts = { 0, 500000 };
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int32_t i;
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// This one thread now hosts TWO runtimes. Each runs a script that calls a native
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// registered under a different runtime; pumping each in turn must make calogCurrent()
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// resolve to the runtime being pumped -- not whichever was created last.
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calogB = calogCreate();
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CHECK(calogB != NULL, "created a second runtime on this same thread");
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calogRegister(calog, "checkRuntime", nativeCheckRuntime, calog);
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calogRegister(calogB, "checkRuntime", nativeCheckRuntime, calogB);
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atomic_store(&matchCount, 0);
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atomic_store(&mismatchCount, 0);
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ctxA = calogContextOpen(calog, &calogLuaEngine);
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ctxB = calogContextOpen(calogB, &calogLuaEngine);
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calogContextEval(ctxA, "checkRuntime()");
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calogContextEval(ctxB, "checkRuntime()");
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for (i = 0; i < PUMP_LIMIT && (atomic_load(&matchCount) + atomic_load(&mismatchCount)) < 2; i++) {
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calogPump(calog);
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calogPump(calogB);
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nanosleep(&ts, NULL);
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}
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CHECK(atomic_load(&matchCount) == 2, "one thread pumped two runtimes; each native saw its own runtime");
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CHECK(atomic_load(&mismatchCount) == 0, "no native resolved to the wrong runtime while sharing a host thread");
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calogContextClose(ctxA);
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calogContextClose(ctxB);
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calogDestroy(calogB);
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}
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int main(void) {
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calog = calogCreate();
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if (calog == NULL) {
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printf("calog create failed\n");
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return 1;
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}
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calogSetErrorHandler(calog, onError, NULL);
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calogRegister(calog, "report", nativeReport, NULL);
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calogRegister(calog, "setCb", nativeSetCb, NULL);
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calogRegister(calog, "done", nativeDone, NULL);
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calogRegister(calog, "bump", nativeBump, NULL);
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calogRegisterInline(calog, "reportInline", nativeReportInline, NULL);
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testHostAndInlineNatives();
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testCrossThreadCallback();
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testScriptError();
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testConcurrentContexts();
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testSingleThreadMultiRuntime();
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testContextLoad();
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calogDestroy(calog);
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printf("\n%d checks, %d failed\n", testsRun, testsFailed);
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fflush(stdout);
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if (testsFailed != 0) {
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return 1;
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}
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return 0;
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}
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