Function _sbrk

js/sql-debug.js:397891–397918

(increment)

    return (end-num)|0;
}
function _sbrk(increment) {
    increment = increment|0;
    var oldDynamicTop = 0;
    var oldDynamicTopOnChange = 0;
    var newDynamicTop = 0;
    var totalMemory = 0;
    increment = ((increment + 15) & -16)|0;
    oldDynamicTop = HEAP32[DYNAMICTOP_PTR>>2]|0;
    newDynamicTop = oldDynamicTop + increment | 0;

    if (((increment|0) > 0 & (newDynamicTop|0) < (oldDynamicTop|0)) // Detect and fail if we would wrap around signed 32-bit int.
      | (newDynamicTop|0) < 0) { // Also underflow, sbrk() should be able to be used to subtract.
      abortOnCannotGrowMemory()|0;
      ___setErrNo(12);
      return -1;
    }

    HEAP32[DYNAMICTOP_PTR>>2] = newDynamicTop;
    totalMemory = getTotalMemory()|0;
    if ((newDynamicTop|0) > (totalMemory|0)) {
      if ((enlargeMemory()|0) == 0) {
        HEAP32[DYNAMICTOP_PTR>>2] = oldDynamicTop;
        ___setErrNo(12);
        return -1;
      }
    }
    return oldDynamicTop|0;
}

  
function dynCall_i(index) {