170097 2017-03-25 04:55:20 -0700 [JSC] Move platformThreadSignal to WTF 2017-03-29 15:07:15 -0700 1 1 1 Unclassified WebKit New Bugs WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED P2 Normal --- 1 ysuzuki ysuzuki benjamin buildbot cdumez cmarcelo dbates jfbastien keith_miller mark.lam msaboff saam oldest_to_newest 1291187 0 ysuzuki 2017-03-25 04:55:20 -0700 [JSC] Move platformThreadSignal to WTF 1291188 1 305375 ysuzuki 2017-03-25 04:57:24 -0700 Created attachment 305375 Patch 1291189 2 305375 ysuzuki 2017-03-25 05:01:17 -0700 Comment on attachment 305375 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=305375&action=review > Source/JavaScriptCore/runtime/JSLock.cpp:112 > + m_ownerThread = currentThread(); I think it does not cause so much cost. Basically, currentThread() just loads a identifier from thread local storage. 1291574 3 305375 mark.lam 2017-03-27 13:05:33 -0700 Comment on attachment 305375 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=305375&action=review >> Source/JavaScriptCore/runtime/JSLock.cpp:112 >> + m_ownerThread = currentThread(); > > I think it does not cause so much cost. Basically, currentThread() just loads a identifier from thread local storage. I think this is fine but I would like to run it on some benchmarks first just to make sure. I'll r+ if I don't find any issues. 1292007 4 mark.lam 2017-03-28 12:42:46 -0700 (In reply to Mark Lam from comment #3) > >> Source/JavaScriptCore/runtime/JSLock.cpp:112 > >> + m_ownerThread = currentThread(); > > > > I think it does not cause so much cost. Basically, currentThread() just loads a identifier from thread local storage. > > I think this is fine but I would like to run it on some benchmarks first > just to make sure. I'll r+ if I don't find any issues. I've run the JSC benchmarks and Speedometer. Perf is neutral. 1292009 5 305375 mark.lam 2017-03-28 12:43:07 -0700 Comment on attachment 305375 Patch r=me 1292026 6 ysuzuki 2017-03-28 13:01:05 -0700 (In reply to Mark Lam from comment #4) > (In reply to Mark Lam from comment #3) > > >> Source/JavaScriptCore/runtime/JSLock.cpp:112 > > >> + m_ownerThread = currentThread(); > > > > > > I think it does not cause so much cost. Basically, currentThread() just loads a identifier from thread local storage. > > > > I think this is fine but I would like to run it on some benchmarks first > > just to make sure. I'll r+ if I don't find any issues. > > I've run the JSC benchmarks and Speedometer. Perf is neutral. Thanks!! 1292035 7 ysuzuki 2017-03-28 13:08:58 -0700 Committed r214489: <http://trac.webkit.org/changeset/214489> 1292583 8 305375 jfbastien 2017-03-29 14:30:57 -0700 Comment on attachment 305375 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=305375&action=review > Source/JavaScriptCore/runtime/VMTraps.cpp:458 > + signalThread(optionalOwnerThread.value(), SIGUSR1); This function is only defined for USE(PTHREAD), no? Won't that break configurations which aren't USE(PTHREAD) but which build VMTraps.cpp? 1292591 9 mark.lam 2017-03-29 14:48:32 -0700 (In reply to JF Bastien from comment #8) > Comment on attachment 305375 [details] > Patch > > View in context: > https://bugs.webkit.org/attachment.cgi?id=305375&action=review > > > Source/JavaScriptCore/runtime/VMTraps.cpp:458 > > + signalThread(optionalOwnerThread.value(), SIGUSR1); > > This function is only defined for USE(PTHREAD), no? Won't that break > configurations which aren't USE(PTHREAD) but which build VMTraps.cpp? There's a fall back to a polling based VMTraps for platforms that don't support this. Right now, the signaling implementation is only used on an opt-in basis. 1292598 10 305375 mark.lam 2017-03-29 15:07:15 -0700 Comment on attachment 305375 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=305375&action=review >>> Source/JavaScriptCore/runtime/VMTraps.cpp:458 >>> + signalThread(optionalOwnerThread.value(), SIGUSR1); >> >> This function is only defined for USE(PTHREAD), no? Won't that break configurations which aren't USE(PTHREAD) but which build VMTraps.cpp? > > There's a fall back to a polling based VMTraps for platforms that don't support this. Right now, the signaling implementation is only used on an opt-in basis. Also USE(PTHREAD) is true for all OS(UNIX), and OS(UNIX) is true for OS(DARWIN), etc. 305375 2017-03-25 04:57:24 -0700 2017-03-28 12:43:07 -0700 Patch bug-170097-20170325205723.patch text/plain 7908 ysuzuki U3VidmVyc2lvbiBSZXZpc2lvbjogMjE0Mzk4CmRpZmYgLS1naXQgYS9Tb3VyY2UvSmF2YVNjcmlw dENvcmUvQ2hhbmdlTG9nIGIvU291cmNlL0phdmFTY3JpcHRDb3JlL0NoYW5nZUxvZwppbmRleCBj MDRhMDdmMzJiNDI2MTEwYjBmYWVmMWU4MWMwZjg0Yjc4NjdmZjYwLi4zNTAxYmE5NjZhNDZjMDk5 MzVlYzkyYzAwNTIwZDYzYjU5MzIxY2ZkIDEwMDY0NAotLS0gYS9Tb3VyY2UvSmF2YVNjcmlwdENv cmUvQ2hhbmdlTG9nCisrKyBiL1NvdXJjZS9KYXZhU2NyaXB0Q29yZS9DaGFuZ2VMb2cKQEAgLTEs MyArMSwyNiBAQAorMjAxNy0wMy0yNSAgWXVzdWtlIFN1enVraSAgPHV0YXRhbmUudGVhQGdtYWls LmNvbT4KKworICAgICAgICBbSlNDXSBNb3ZlIHBsYXRmb3JtVGhyZWFkU2lnbmFsIHRvIFdURgor ICAgICAgICBodHRwczovL2J1Z3Mud2Via2l0Lm9yZy9zaG93X2J1Zy5jZ2k/aWQ9MTcwMDk3CisK KyAgICAgICAgUmV2aWV3ZWQgYnkgTk9CT0RZIChPT1BTISkuCisKKyAgICAgICAgSXQgaXMgYSBz bWFsbCBjbGVhbiB1cCB0b3dhcmRzIGh0dHBzOi8vYnVncy53ZWJraXQub3JnL3Nob3dfYnVnLmNn 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