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Using SlowCalls: Difference between revisions
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→Getting a tree with instrumentation
(Created page with "== Getting a tree with instrumentation == First, you need to get a tree containing Javascript instrumentation that is fully working. ({{bug|507012}} added the instrumentation, b...") |
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First, you need to get a tree containing Javascript instrumentation that is fully working. ({{bug|507012}} added the instrumentation, but it keeps getting perturbed by JS engine changes, so that it ends up getting mismatched JS function enters/exits.) | First, you need to get a tree containing Javascript instrumentation that is fully working. ({{bug|507012}} added the instrumentation, but it keeps getting perturbed by JS engine changes, so that it ends up getting mismatched JS function enters/exits.) | ||
Option 1: mozilla-central | === Option 1: mozilla-central === | ||
The current (2010-Oct-11) m-c tree's JS interpreter is in an intermediate state that I can't get the instrumentation working for. So my current workaround is to do a wholesale update to a fairly recent tracemonkey and then add some patches that fix the instrumentation there. | The current (2010-Oct-11) m-c tree's JS interpreter is in an intermediate state that I can't get the instrumentation working for. So my current workaround is to do a wholesale update to a fairly recent tracemonkey and then add some patches that fix the instrumentation there. | ||
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That first patch is likely to rot rather quickly. If so, you could clone revision 19b462ec16a0 and copy out the js/src subtree from there instead. | That first patch is likely to rot rather quickly. If so, you could clone revision 19b462ec16a0 and copy out the js/src subtree from there instead. | ||
Option 2: tracemonkey | === Option 2: tracemonkey === | ||
The patches in {{bug|602067}} will get to the same state as the patched mozilla-central tree, above, but dvander has rewritten the JS engine integration in {{bug|603044}} to be much, much nicer. None of my patches will be needed after this lands. But I haven't tried it yet. | The patches in {{bug|602067}} will get to the same state as the patched mozilla-central tree, above, but dvander has rewritten the JS engine integration in {{bug|603044}} to be much, much nicer. None of my patches will be needed after this lands. But I haven't tried it yet. | ||