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-rw-r--r--src/preamble.js35
1 files changed, 35 insertions, 0 deletions
diff --git a/src/preamble.js b/src/preamble.js
index 3fcdf1f8..7fd51733 100644
--- a/src/preamble.js
+++ b/src/preamble.js
@@ -532,6 +532,41 @@ var HEAP8, HEAPU8, HEAP16, HEAPU16, HEAP32, HEAPU32, HEAPF32;
var STACK_ROOT, STACKTOP, STACK_MAX;
var STATICTOP;
+#if USE_TYPED_ARRAYS
+var LAST_STATICTOP;
+function enlargeMemory() {
+ // LAST_STATICTOP is the previous top, TOTAL_MEMORY is the current size of the actual array, and STATICTOP is the new top.
+#if ASSERTIONS
+ assert(STATICTOP >= TOTAL_MEMORY && LAST_STATICTOP < TOTAL_MEMORY);
+ assert(TOTAL_MEMORY > 4); // So the loop below will not be infinite
+#endif
+ while (TOTAL_MEMORY <= STATICTOP) { // Simple heuristic. Override enlargeMemory() if your program has something more optimal for it
+ TOTAL_MEMORY = alignMemoryPage(TOTAL_MEMORY*1.25);
+ }
+#if USE_TYPED_ARRAYS == 1
+ var oldIHEAP = IHEAP;
+ HEAP = IHEAP = new Int32Array(TOTAL_MEMORY);
+ IHEAP.set(oldIHEAP);
+#if USE_FHEAP
+ var oldFHEAP = FHEAP;
+ FHEAP = new Float64Array(TOTAL_MEMORY);
+ FHEAP.set(oldFHEAP);
+#endif
+#endif
+#if USE_TYPED_ARRAYS == 2
+ var oldHEAP8 = HEAP8;
+ var buffer = new ArrayBuffer(TOTAL_MEMORY);
+ HEAP8 = new Int8Array(buffer);
+ HEAP16 = new Int16Array(buffer);
+ HEAP32 = new Int32Array(buffer);
+ HEAPU8 = new Uint8Array(buffer);
+ HEAPU16 = new Uint16Array(buffer);
+ HEAPU32 = new Uint32Array(buffer);
+ HEAPF32 = new Float32Array(buffer);
+ HEAP8.set(oldHEAP8);
+#endif
+}
+#endif
var TOTAL_MEMORY = Module['TOTAL_MEMORY'] || {{{ TOTAL_MEMORY }}};
var FAST_MEMORY = Module['FAST_MEMORY'] || {{{ FAST_MEMORY }}};