testStackWalking.js

Enable keyboard shortcuts

load(libdir + "asm.js");

load(libdir + "asserts.js");

function matchStack(stackString, stackArray)

    var match = 0;

    for (name of stackArray) {

        match = stackString.indexOf(name, match);

        if (match === -1)

            throw name + " not found in the stack " + stack;

var stack;

function dumpStack()

    stack = new Error().stack

setJitCompilerOption("ion.warmup.trigger", 10);

setJitCompilerOption("baseline.warmup.trigger", 0);

setJitCompilerOption("offthread-compilation.enable", 0);

var callFFI = asmCompile('global', 'ffis', USE_ASM + "var ffi=ffis.ffi; function f() { return ffi()|0 } return f");

var f = asmLink(callFFI, null, {ffi:dumpStack});

for (var i = 0; i < 15; i++) {

    stack = null;

    f();

    matchStack(stack, ['dumpStack', 'f']);

if (isAsmJSCompilationAvailable()) {

    var callFFI = asmCompile('global', 'ffis', USE_ASM + "var ffi=ffis.ffi; function f() { return ffi()|0 } return f");

    assertEq(isAsmJSModule(callFFI), true);

    stack = null;

    f();

    matchStack(stack, ['dumpStack', 'f']);

var f1 = asmLink(callFFI, null, {ffi:dumpStack});

var f2 = asmLink(callFFI, null, {ffi:function middle() { f1() }});

stack = null;

(function outer() { f2() })();

matchStack(stack, ["dumpStack", "f", "middle", "f"]);

function returnStackDumper() { return { valueOf:function() { stack = new Error().stack } } }

var f = asmLink(callFFI, null, {ffi:returnStackDumper});

for (var i = 0; i < 15; i++) {

    stack = null;

    f();

    matchStack(stack, ['valueOf', 'f']);

var caught = false;

try {

    stack = null;

    asmLink(asmCompile(USE_ASM + "function asmRec() { asmRec() } return asmRec"))();

} catch (e) {

    caught = true;

    matchStack(e.stack, ['asmRec', 'asmRec', 'asmRec', 'asmRec']);

assertEq(caught, true);

var caught = false;

try {

    callFFI(null, {ffi:Object.defineProperty})();

} catch (e) {

    caught = true;

assertEq(caught, true);

asmLink(callFFI, null, {ffi:eval})();

asmLink(callFFI, null, {ffi:Function})();

asmLink(callFFI, null, {ffi:Error})();

var manyCalls = asmCompile('global', 'ffis',

    USE_ASM +

    "var ffi=ffis.ffi;\

     function f1(a,b,c,d,e,f,g,h,i,j,k) { \

       a=a|0;b=b|0;c=c|0;d=d|0;e=e|0;f=f|0;g=g|0;h=h|0;i=i|0;j=j|0;k=k|0; \

       ffi(); \

       return (a+b+c+d+e+f+g+h+i+j+k)|0; \

} \

     function f2() { \

       return f1(1,2,3,4,5,6,7,8,f1(1,2,3,4,5,6,7,8,9,10,11)|0,10,11)|0; \

} \

     function f3() { return 13 } \

     function f4(i) { \

       i=i|0; \

       return TBL[i&3]()|0; \

} \

     var TBL=[f3, f3, f2, f3]; \

     return f4;");

stack = null;

assertEq(asmLink(manyCalls, null, {ffi:dumpStack})(2), 123);

matchStack(stack, ['dumpStack', 'f1', 'f2', 'f4']);