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Tons of Solutions Engineering work done today for the rest of the CS team! Headway, Howard Hanna, Engels, Brighton, etc. Also completed Datasnippers auth flow and worked on Anthology's script. Cloned Anthology's courses (900..) and will clone Full Story on Monday.

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Norm Rasmussen
2024-01-05 17:07:59 -05:00
parent ce261975ca
commit a5fe4bd2c8
3157 changed files with 554269 additions and 16 deletions
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Scripts/node_modules/@tootallnate/quickjs-emscripten/dist/runtime.js generated vendored Normal file
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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.QuickJSRuntime = void 0;
const asyncify_helpers_1 = require("./asyncify-helpers");
const context_1 = require("./context");
const debug_1 = require("./debug");
const errors_1 = require("./errors");
const lifetime_1 = require("./lifetime");
const memory_1 = require("./memory");
const types_1 = require("./types");
/**
* A runtime represents a Javascript runtime corresponding to an object heap.
* Several runtimes can exist at the same time but they cannot exchange objects.
* Inside a given runtime, no multi-threading is supported.
*
* You can think of separate runtimes like different domains in a browser, and
* the contexts within a runtime like the different windows open to the same
* domain.
*
* Create a runtime via {@link QuickJSWASMModule.newRuntime}.
*
* You should create separate runtime instances for untrusted code from
* different sources for isolation. However, stronger isolation is also
* available (at the cost of memory usage), by creating separate WebAssembly
* modules to further isolate untrusted code.
* See {@link newQuickJSWASMModule}.
*
* Implement memory and CPU constraints with [[setInterruptHandler]]
* (called regularly while the interpreter runs), [[setMemoryLimit]], and
* [[setMaxStackSize]].
* Use [[computeMemoryUsage]] or [[dumpMemoryUsage]] to guide memory limit
* tuning.
*
* Configure ES module loading with [[setModuleLoader]].
*/
class QuickJSRuntime {
/** @private */
constructor(args) {
/** @private */
this.scope = new lifetime_1.Scope();
/** @private */
this.contextMap = new Map();
this.cToHostCallbacks = {
shouldInterrupt: (rt) => {
if (rt !== this.rt.value) {
throw new Error("QuickJSContext instance received C -> JS interrupt with mismatched rt");
}
const fn = this.interruptHandler;
if (!fn) {
throw new Error("QuickJSContext had no interrupt handler");
}
return fn(this) ? 1 : 0;
},
loadModuleSource: (0, asyncify_helpers_1.maybeAsyncFn)(this, function* (awaited, rt, ctx, moduleName) {
const moduleLoader = this.moduleLoader;
if (!moduleLoader) {
throw new Error("Runtime has no module loader");
}
if (rt !== this.rt.value) {
throw new Error("Runtime pointer mismatch");
}
const context = this.contextMap.get(ctx) ??
this.newContext({
contextPointer: ctx,
});
try {
const result = yield* awaited(moduleLoader(moduleName, context));
if (typeof result === "object" && "error" in result && result.error) {
(0, debug_1.debugLog)("cToHostLoadModule: loader returned error", result.error);
throw result.error;
}
const moduleSource = typeof result === "string" ? result : "value" in result ? result.value : result;
return this.memory.newHeapCharPointer(moduleSource).value;
}
catch (error) {
(0, debug_1.debugLog)("cToHostLoadModule: caught error", error);
context.throw(error);
return 0;
}
}),
normalizeModule: (0, asyncify_helpers_1.maybeAsyncFn)(this, function* (awaited, rt, ctx, baseModuleName, moduleNameRequest) {
const moduleNormalizer = this.moduleNormalizer;
if (!moduleNormalizer) {
throw new Error("Runtime has no module normalizer");
}
if (rt !== this.rt.value) {
throw new Error("Runtime pointer mismatch");
}
const context = this.contextMap.get(ctx) ??
this.newContext({
/* TODO: Does this happen? Are we responsible for disposing? I don't think so */
contextPointer: ctx,
});
try {
const result = yield* awaited(moduleNormalizer(baseModuleName, moduleNameRequest, context));
if (typeof result === "object" && "error" in result && result.error) {
(0, debug_1.debugLog)("cToHostNormalizeModule: normalizer returned error", result.error);
throw result.error;
}
const name = typeof result === "string" ? result : result.value;
return context.getMemory(this.rt.value).newHeapCharPointer(name).value;
}
catch (error) {
(0, debug_1.debugLog)("normalizeModule: caught error", error);
context.throw(error);
return 0;
}
}),
};
args.ownedLifetimes?.forEach((lifetime) => this.scope.manage(lifetime));
this.module = args.module;
this.memory = new memory_1.ModuleMemory(this.module);
this.ffi = args.ffi;
this.rt = args.rt;
this.callbacks = args.callbacks;
this.scope.manage(this.rt);
this.callbacks.setRuntimeCallbacks(this.rt.value, this.cToHostCallbacks);
this.executePendingJobs = this.executePendingJobs.bind(this);
}
get alive() {
return this.scope.alive;
}
dispose() {
return this.scope.dispose();
}
newContext(options = {}) {
if (options.intrinsics && options.intrinsics !== types_1.DefaultIntrinsics) {
throw new Error("TODO: Custom intrinsics are not supported yet");
}
const ctx = new lifetime_1.Lifetime(options.contextPointer || this.ffi.QTS_NewContext(this.rt.value), undefined, (ctx_ptr) => {
this.contextMap.delete(ctx_ptr);
this.callbacks.deleteContext(ctx_ptr);
this.ffi.QTS_FreeContext(ctx_ptr);
});
const context = new context_1.QuickJSContext({
module: this.module,
ctx,
ffi: this.ffi,
rt: this.rt,
ownedLifetimes: options.ownedLifetimes,
runtime: this,
callbacks: this.callbacks,
});
this.contextMap.set(ctx.value, context);
return context;
}
/**
* Set the loader for EcmaScript modules requested by any context in this
* runtime.
*
* The loader can be removed with [[removeModuleLoader]].
*/
setModuleLoader(moduleLoader, moduleNormalizer) {
this.moduleLoader = moduleLoader;
this.moduleNormalizer = moduleNormalizer;
this.ffi.QTS_RuntimeEnableModuleLoader(this.rt.value, this.moduleNormalizer ? 1 : 0);
}
/**
* Remove the the loader set by [[setModuleLoader]]. This disables module loading.
*/
removeModuleLoader() {
this.moduleLoader = undefined;
this.ffi.QTS_RuntimeDisableModuleLoader(this.rt.value);
}
// Runtime management -------------------------------------------------------
/**
* In QuickJS, promises and async functions create pendingJobs. These do not execute
* immediately and need to be run by calling [[executePendingJobs]].
*
* @return true if there is at least one pendingJob queued up.
*/
hasPendingJob() {
return Boolean(this.ffi.QTS_IsJobPending(this.rt.value));
}
/**
* Set a callback which is regularly called by the QuickJS engine when it is
* executing code. This callback can be used to implement an execution
* timeout.
*
* The interrupt handler can be removed with [[removeInterruptHandler]].
*/
setInterruptHandler(cb) {
const prevInterruptHandler = this.interruptHandler;
this.interruptHandler = cb;
if (!prevInterruptHandler) {
this.ffi.QTS_RuntimeEnableInterruptHandler(this.rt.value);
}
}
/**
* Remove the interrupt handler, if any.
* See [[setInterruptHandler]].
*/
removeInterruptHandler() {
if (this.interruptHandler) {
this.ffi.QTS_RuntimeDisableInterruptHandler(this.rt.value);
this.interruptHandler = undefined;
}
}
/**
* Execute pendingJobs on the runtime until `maxJobsToExecute` jobs are
* executed (default all pendingJobs), the queue is exhausted, or the runtime
* encounters an exception.
*
* In QuickJS, promises and async functions *inside the runtime* create
* pendingJobs. These do not execute immediately and need to triggered to run.
*
* @param maxJobsToExecute - When negative, run all pending jobs. Otherwise execute
* at most `maxJobsToExecute` before returning.
*
* @return On success, the number of executed jobs. On error, the exception
* that stopped execution, and the context it occurred in. Note that
* executePendingJobs will not normally return errors thrown inside async
* functions or rejected promises. Those errors are available by calling
* [[resolvePromise]] on the promise handle returned by the async function.
*/
executePendingJobs(maxJobsToExecute = -1) {
const ctxPtrOut = this.memory.newMutablePointerArray(1);
const valuePtr = this.ffi.QTS_ExecutePendingJob(this.rt.value, maxJobsToExecute ?? -1, ctxPtrOut.value.ptr);
const ctxPtr = ctxPtrOut.value.typedArray[0];
ctxPtrOut.dispose();
if (ctxPtr === 0) {
// No jobs executed.
this.ffi.QTS_FreeValuePointerRuntime(this.rt.value, valuePtr);
return { value: 0 };
}
const context = this.contextMap.get(ctxPtr) ??
this.newContext({
contextPointer: ctxPtr,
});
const resultValue = context.getMemory(this.rt.value).heapValueHandle(valuePtr);
const typeOfRet = context.typeof(resultValue);
if (typeOfRet === "number") {
const executedJobs = context.getNumber(resultValue);
resultValue.dispose();
return { value: executedJobs };
}
else {
const error = Object.assign(resultValue, { context });
return {
error,
};
}
}
/**
* Set the max memory this runtime can allocate.
* To remove the limit, set to `-1`.
*/
setMemoryLimit(limitBytes) {
if (limitBytes < 0 && limitBytes !== -1) {
throw new Error("Cannot set memory limit to negative number. To unset, pass -1");
}
this.ffi.QTS_RuntimeSetMemoryLimit(this.rt.value, limitBytes);
}
/**
* Compute memory usage for this runtime. Returns the result as a handle to a
* JSValue object. Use [[QuickJSContext.dump]] to convert to a native object.
* Calling this method will allocate more memory inside the runtime. The information
* is accurate as of just before the call to `computeMemoryUsage`.
* For a human-digestible representation, see [[dumpMemoryUsage]].
*/
computeMemoryUsage() {
const serviceContextMemory = this.getSystemContext().getMemory(this.rt.value);
return serviceContextMemory.heapValueHandle(this.ffi.QTS_RuntimeComputeMemoryUsage(this.rt.value, serviceContextMemory.ctx.value));
}
/**
* @returns a human-readable description of memory usage in this runtime.
* For programmatic access to this information, see [[computeMemoryUsage]].
*/
dumpMemoryUsage() {
return this.memory.consumeHeapCharPointer(this.ffi.QTS_RuntimeDumpMemoryUsage(this.rt.value));
}
/**
* Set the max stack size for this runtime, in bytes.
* To remove the limit, set to `0`.
*/
setMaxStackSize(stackSize) {
if (stackSize < 0) {
throw new Error("Cannot set memory limit to negative number. To unset, pass 0.");
}
this.ffi.QTS_RuntimeSetMaxStackSize(this.rt.value, stackSize);
}
/**
* Assert that `handle` is owned by this runtime.
* @throws QuickJSWrongOwner if owned by a different runtime.
*/
assertOwned(handle) {
if (handle.owner && handle.owner.rt !== this.rt) {
throw new errors_1.QuickJSWrongOwner(`Handle is not owned by this runtime: ${handle.owner.rt.value} != ${this.rt.value}`);
}
}
getSystemContext() {
if (!this.context) {
// We own this context and should dispose of it.
this.context = this.scope.manage(this.newContext());
}
return this.context;
}
}
exports.QuickJSRuntime = QuickJSRuntime;
//# sourceMappingURL=runtime.js.map