Baseline Widely available
Atomics.add()
ã¯éçã¡ã½ããã§ãé
åå
ã®æå®ããä½ç½®ã®å¤ã«å ç®ãã¦ããã®ä½ç½®ã®å¤ãå¤ãè¿ãã¾ããããã¯ä¸å¯åæä½ã§ãä¿®æ£ãããå¤ãæ¸ãæ»ãããã¾ã§ãä»ã®æ¸ãè¾¼ã¿ãèµ·ãããªããã¨ãä¿è¨¼ãã¾ãã
// ãã¤ãåä½ã§ãµã¤ãºãæå®ã㦠SharedArrayBuffer ã使
const buffer = new SharedArrayBuffer(16);
const uint8 = new Uint8Array(buffer);
uint8[0] = 7;
// 7 + 2 = 9
console.log(Atomics.add(uint8, 0, 2));
// äºæ³ãããçµæ: 7
console.log(Atomics.load(uint8, 0));
// äºæ³ãããçµæ: 9
æ§æ
Atomics.add(typedArray, index, value)
弿°
typedArray
å
±ææ´æ°ã®åä»ãé
åã§ãã Int8Array
, Uint8Array
, Int16Array
, Uint16Array
, Int32Array
, Uint32Array
, BigInt64Array
, BigUint64Array
ã®ããããã§ãã
index
typedArray
ã§ value
ãå ç®ããä½ç½®ã§ãã
value
å ç®ããæ°å¤ã§ãã
æå®ãããä½ç½® (typedArray[index]
) ã«ãã£ãå¤ãå¤ã§ãã
TypeError
typedArray
ã許å¯ãããæ´æ°åã®ãããã§ããªãå ´åã«çºçãã¾ãã
RangeError
index
ã typedArray
ã®ç¯å²ãè¶
ãã¦ããå ´åã«çºçãã¾ãã
const sab = new SharedArrayBuffer(1024);
const ta = new Uint8Array(sab);
Atomics.add(ta, 0, 12); // å¤ãå¤ã§ãã 0 ãè¿ãã
Atomics.load(ta, 0); // 12
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