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Diffstat (limited to '')
-rw-r--r-- | js/src/jit-test/tests/debug/Memory-takeCensus-09.js | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Memory-takeCensus-09.js b/js/src/jit-test/tests/debug/Memory-takeCensus-09.js new file mode 100644 index 0000000000..ff4823ee7a --- /dev/null +++ b/js/src/jit-test/tests/debug/Memory-takeCensus-09.js @@ -0,0 +1,74 @@ +// Debugger.Memory.prototype.takeCensus: by: allocationStack breakdown + +var g = newGlobal({newCompartment: true}); +var dbg = new Debugger(g); + +g.evaluate(` + var log = []; + function f() { log.push(allocationMarker()); } + function g() { f(); } + function h() { f(); } + `, + { fileName: "Rockford", lineNumber: 1000 }); + +// Create one allocationMarker with tracking turned off, +// so it will have no associated stack. +g.f(); + +dbg.memory.allocationSamplingProbability = 1; +dbg.memory.trackingAllocationSites = true; + +for ([f, n] of [[g.f, 20], [g.g, 10], [g.h, 5]]) + for (let i = 0; i < n; i++) + f(); // all allocations of allocationMarker occur with this line as the + // oldest stack frame. + +let census = dbg.memory.takeCensus({ breakdown: { by: 'objectClass', + then: { by: 'allocationStack', + then: { by: 'count', + label: 'haz stack' + }, + noStack: { by: 'count', + label: 'no haz stack' + } + } + } + }); + +let map = census.AllocationMarker; +assertEq(map instanceof Map, true); + +// Gather the stacks we are expecting to appear as keys, and +// check that there are no unexpected keys. +let stacks = { }; + +map.forEach((v, k) => { + if (k === 'noStack') { + // No need to save this key. + } else if (k.functionDisplayName === 'f' && + k.parent.functionDisplayName === null) { + stacks.f = k; + } else if (k.functionDisplayName === 'f' && + k.parent.functionDisplayName === 'g' && + k.parent.parent.functionDisplayName === null) { + stacks.fg = k; + } else if (k.functionDisplayName === 'f' && + k.parent.functionDisplayName === 'h' && + k.parent.parent.functionDisplayName === null) { + stacks.fh = k; + } else { + assertEq(true, false); + } +}); + +assertEq(map.get('noStack').label, 'no haz stack'); +assertEq(map.get('noStack').count, 1); + +assertEq(map.get(stacks.f).label, 'haz stack'); +assertEq(map.get(stacks.f).count, 20); + +assertEq(map.get(stacks.fg).label, 'haz stack'); +assertEq(map.get(stacks.fg).count, 10); + +assertEq(map.get(stacks.fh).label, 'haz stack'); +assertEq(map.get(stacks.fh).count, 5); |