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Brian McGonagill 2026-03-18 09:02:21 -05:00
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node_modules/effect/dist/esm/internal/stm/tSemaphore.js generated vendored Normal file
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import * as Cause from "../../Cause.js";
import * as Effect from "../../Effect.js";
import { dual } from "../../Function.js";
import * as STM from "../../STM.js";
import * as core from "./core.js";
import * as tRef from "./tRef.js";
/** @internal */
const TSemaphoreSymbolKey = "effect/TSemaphore";
/** @internal */
export const TSemaphoreTypeId = /*#__PURE__*/Symbol.for(TSemaphoreSymbolKey);
/** @internal */
class TSemaphoreImpl {
permits;
[TSemaphoreTypeId] = TSemaphoreTypeId;
constructor(permits) {
this.permits = permits;
}
}
/** @internal */
export const make = permits => STM.map(tRef.make(permits), permits => new TSemaphoreImpl(permits));
/** @internal */
export const acquire = self => acquireN(self, 1);
/** @internal */
export const acquireN = /*#__PURE__*/dual(2, (self, n) => core.withSTMRuntime(driver => {
if (n < 0) {
throw new Cause.IllegalArgumentException(`Unexpected negative value ${n} passed to Semaphore.acquireN`);
}
const value = tRef.unsafeGet(self.permits, driver.journal);
if (value < n) {
return STM.retry;
} else {
return STM.succeed(tRef.unsafeSet(self.permits, value - n, driver.journal));
}
}));
/** @internal */
export const available = self => tRef.get(self.permits);
/** @internal */
export const release = self => releaseN(self, 1);
/** @internal */
export const releaseN = /*#__PURE__*/dual(2, (self, n) => core.withSTMRuntime(driver => {
if (n < 0) {
throw new Cause.IllegalArgumentException(`Unexpected negative value ${n} passed to Semaphore.releaseN`);
}
const current = tRef.unsafeGet(self.permits, driver.journal);
return STM.succeed(tRef.unsafeSet(self.permits, current + n, driver.journal));
}));
/** @internal */
export const withPermit = /*#__PURE__*/dual(2, (self, semaphore) => withPermits(self, semaphore, 1));
/** @internal */
export const withPermits = /*#__PURE__*/dual(3, (self, semaphore, permits) => Effect.uninterruptibleMask(restore => Effect.zipRight(restore(core.commit(acquireN(permits)(semaphore))), Effect.ensuring(self, core.commit(releaseN(permits)(semaphore))))));
/** @internal */
export const withPermitScoped = self => withPermitsScoped(self, 1);
/** @internal */
export const withPermitsScoped = /*#__PURE__*/dual(2, (self, permits) => Effect.acquireReleaseInterruptible(core.commit(acquireN(self, permits)), () => core.commit(releaseN(self, permits))));
/** @internal */
export const unsafeMakeSemaphore = permits => {
return new TSemaphoreImpl(new tRef.TRefImpl(permits));
};
//# sourceMappingURL=tSemaphore.js.map