)]}'
{
  "log": [
    {
      "commit": "138dbfc3336e379d74d157086f69a0fbe830089b",
      "tree": "f5fa88466e6ab339d2a6faf9c9105bafcaee3ea7",
      "parents": [
        "62e45483db4aa1be096d3ce91903e01ef52fb901"
      ],
      "author": {
        "name": "Sebastien Hertz",
        "email": "shertz@google.com",
        "time": "Wed Dec 04 18:15:25 2013 +0100"
      },
      "committer": {
        "name": "Sebastien Hertz",
        "email": "shertz@google.com",
        "time": "Mon Jan 13 15:08:24 2014 +0100"
      },
      "message": "Selective deoptimization.\n\nUpdate the instrumentation to allow selective deoptimization.\n\nSeparate instrumentation listener registration from stubs configuration. A\nlistener is now responsible for configuring the appropriate stubs.\n- The method tracing listener installs instrumentation entry/exit stubs or\nthe interpreter depending on the accuracy of events we want (controlled by\nkDeoptimizeForAccurateMethodEntryExitListeners).\n- The debugger registers itself as an instrumentation listener but does not\nmodify methods entrypoints. It only does this on demand when deoptimizing one\nmethod or all the methods.\n\nThe selective deoptimization is used for breakpoint only. When a breakpoint is\nrequested, the debugger deoptimizes this method by setting its entrypoint to\nthe interpreter stub. As several breakpoints can be set on the same method, we\ndeoptimize only once. When the last breakpoint on a method is removed, we\nreoptimize it by restoring the original entrypoints.\n\nThe full deoptimization is used for method entry, method exit and single-step\nevents. When one of these events is requested, we force eveything to run with\nthe interpreter (except native and proxy methods). When the last of these\nevents is removed, we restore all methods entrypoints except those which are\ncurrently deoptimized.\n\nDeoptimizing a method requires all mutator threads be suspended in order to\nwalk each thread\u0027s stack and ensure no code is actually executing while we\nmodify methods entrypoints. Suspending all the threads requires to not hold\nany lock.\nIn the debugger, we deoptimize/undeoptimize when the JDWP event list changes\n(add or remove a breakpoint for instance). During the update, we need to hold\nthe JDWP event list lock. This means we cannot suspend all the threads at this\ntime.\nIn order to deal with these constraints, we support a queue of deoptimization\nrequests. When an event needs selective/full deoptimization/undeoptimization,\nwe save its request in the queue. Once we release the JDWP event list lock, we\nsuspend all the threads, process this queue and finally resume all the threads.\nThis is done in Dbg::ManageDeoptimization. Note: threads already suspended\nbefore doing this remain suspended so we don\u0027t \"break\" debugger suspensions.\n\nWhen we deoptimize one method or every method, we need to browse each thread\u0027s\nstack to install instrumentation exit PC as return PC and save information in\nthe instrumentation stack frame. Now we can deoptimize multiple times during\nthe execution of an application, we need to preserve exisiting instrumentation\nframes (which is the result of a previous deoptimization). This require to push\nnew instrumentation frames before existing ones so we don\u0027t corrupt the\ninstrumentation stack frame while walking the stack.\n\nBug: 11538162\nChange-Id: I477142df17edf2dab8ac5d879daacc5c08a67c39\n"
    },
    {
      "commit": "0aded089f565008ba5908e395e5914ca4f91f2de",
      "tree": "3b1238d956e0181d00243604c83c3a0be368437d",
      "parents": [
        "98ba6cebd22489c959d845884ee045dcbd958d41"
      ],
      "author": {
        "name": "Dave Allison",
        "email": "dallison@google.com",
        "time": "Thu Nov 07 13:15:11 2013 -0800"
      },
      "committer": {
        "name": "Dave Allison",
        "email": "dallison@google.com",
        "time": "Tue Jan 07 10:58:07 2014 -0800"
      },
      "message": "Add sampling profiler\n\nThis adds a sampling profiler thread that runs every so often, gathering\nprofiling data and writing the results to a file in /data/data (specific to\napp running).  The intention is to use these files as input to the compiler\nso that it can determine the best methods to compile.\n\nBug: 11539952\nChange-Id: I0bfbb4146fb7966673c792f017ffac8107b6272d\n"
    },
    {
      "commit": "7940e44f4517de5e2634a7e07d58d0fb26160513",
      "tree": "ac90242d96229a6942f6e24ab137bc1f8f2e0025",
      "parents": [
        "5cd9e3b122f276f610980cbaf0d2ad6ed4cd9088"
      ],
      "author": {
        "name": "Brian Carlstrom",
        "email": "bdc@google.com",
        "time": "Fri Jul 12 13:46:57 2013 -0700"
      },
      "committer": {
        "name": "Brian Carlstrom",
        "email": "bdc@google.com",
        "time": "Fri Jul 12 17:49:01 2013 -0700"
      },
      "message": "Create separate Android.mk for main build targets\n\nThe runtime, compiler, dex2oat, and oatdump now are in seperate trees\nto prevent dependency creep.  They can now be individually built\nwithout rebuilding the rest of the art projects. dalvikvm and jdwpspy\nwere already this way. Builds in the art directory should behave as\nbefore, building everything including tests.\n\nChange-Id: Ic6b1151e5ed0f823c3dd301afd2b13eb2d8feb81\n"
    },
    {
      "commit": "1bf8d4dbe5cb9891e8a1125ff1928b544efc243a",
      "tree": "84b28ef4c8bdf7da73c16e891e2fe978b52d9a90",
      "parents": [
        "b29bbbc00071f56a4a98a2d94c3968a36763ed55"
      ],
      "author": {
        "name": "Ian Rogers",
        "email": "irogers@google.com",
        "time": "Thu May 30 00:18:49 2013 -0700"
      },
      "committer": {
        "name": "Ian Rogers",
        "email": "irogers@google.com",
        "time": "Thu May 30 10:20:05 2013 -0700"
      },
      "message": "Profiler directed clean-up of dex2oat.\n\nFix bad usage of std::string in: the verifier and compiler driver method\narguments, causing unnecessary boxing and allocations; in creating a symbol for\nthe dex compilation unit, that is only used in portable builds; in pattern\nmatching for intrinsics by name.\n\nMake class linker dex and classes locks reader/writer to allow concurrent\ndex cache or class querying. Refactor ComputeCompilingMethodsClass to pass in a\ndex cache hint, to avoid taking any locks when the dex file of the compiling\nmethod matches that of the field or method being resolved.\n\nMake the RegType\u0027s HasClass method virtual to avoid frequent virtual method\ndispatch. Make RegTypeCache GetFromId inlinable.\n\nVarious other bits of whitespace and formatting clean-up.\n\nChange-Id: Id152e1e5a6fed2961dad0b612b7aa0c48001ef94\n"
    },
    {
      "commit": "62d6c772205b8859f0ebf7ad105402ec4c3e2e01",
      "tree": "e2f2ba6d71ed5a39c9f6909e3f7c08e998053315",
      "parents": [
        "c9b17c7ee96cd04fac9048aab624ed554fe260bf"
      ],
      "author": {
        "name": "Ian Rogers",
        "email": "irogers@google.com",
        "time": "Wed Feb 27 08:32:07 2013 -0800"
      },
      "committer": {
        "name": "Ian Rogers",
        "email": "irogers@google.com",
        "time": "Mon Apr 08 14:24:13 2013 -0700"
      },
      "message": "Interpreter entries and instrumentation as a listener.\n\nMake the instrumentation responsible for whether we want method entry/exit\nstubs, and allow it to use interpreter entry stubs when instruction by\ninstruction instrumentation is required. Improve deoptimization so more JDWP\ntest cases are passing.\n\nRefactor exception debug posting, in particular improve reporting in the\ninterpreter. Improve class linker exception throwing so that broken dex files\nare more likely to be reported. Fixes the performance issue Bug: 8410519.\n\nFix some error reporting lock level errors for the large object space. Make\nfast object verification faster.\n\nAdd some debug mode robustness to finding dex PCs in GC maps.\n\nAdd printf attributes to JniAbortF and fix errors.\n\nExpand run-test 044 to test return behaviors and fix issues with not throwing\nappropriate exceptions for proxies.\n\nEnsure causes are reported with a class linker NoClassDefFoundError and JNI\nNoSuchFieldError.\n\nRemove unused debugMe and updateDebuggerFromCode.\n\nThere\u0027s a minor sizing tweak to the arg array builder, and an extra reference\narray check in the interpreter.\n\nSome clean-up of trace code.\n\nFix reg type cache destructor if it is called after the reg type cache is\nshutdown (as is the case in oatdump).\n\nChange-Id: I6519c7b35df77f978d011999354c864f4918e8ce\n"
    },
    {
      "commit": "76b6167407c2b6f5d40ad895b2793a6b037f54b2",
      "tree": "5c433a0907ddf401f4078b6703253b1ae75e723e",
      "parents": [
        "f66330a747eff155eb571b634fc9d901c55a78a7"
      ],
      "author": {
        "name": "Elliott Hughes",
        "email": "enh@google.com",
        "time": "Wed Dec 12 17:47:30 2012 -0800"
      },
      "committer": {
        "name": "Elliott Hughes",
        "email": "enh@google.com",
        "time": "Wed Dec 12 18:11:44 2012 -0800"
      },
      "message": "Move mutex.h into base/mutex.h.\n\nWe don\u0027t actually need any hackery to get the right mutex.h any\nmore, but since we planned on having the google3-like stuff\nin google3-like locations, this is an easy one to fix.\n\nChange-Id: Ie27464ebbc208a6f4e694a97cf26b1cee0737009\n"
    },
    {
      "commit": "09bfc6a50bdc9366b13ac3ab479d9278c853d90a",
      "tree": "f3d528939b038e5f0a6d16cbb83934ddc2b6ffc0",
      "parents": [
        "89c41e5f2fa10e7b97698b9714bd4883a73132f0"
      ],
      "author": {
        "name": "jeffhao",
        "email": "jeffhao@google.com",
        "time": "Tue Dec 11 18:11:43 2012 -0800"
      },
      "committer": {
        "name": "jeffhao",
        "email": "jeffhao@google.com",
        "time": "Wed Dec 12 13:25:25 2012 -0800"
      },
      "message": "Some fixes for JDWP with the interpreter.\n\n- GetStackDepth checks if the thread is suspended, unless the thread is\n  itself.\n- Scoped the breakpoints lock during UpdateDebugger to prevent it being\n  held during PostLocationEvent.\n- Removed locking of breakpoints lock in DebugCallbackContext since it\u0027s\n  already holding it.\n- Added level for breakpoints lock to prevent lock level violations.\n\nChange-Id: I3588c9696bb57ada3c8c64dc1d95ae23cdf2b107\n"
    },
    {
      "commit": "120f1c74a9768e958377b6c97897511b27ae58c8",
      "tree": "fa1f90d88ea34d8ef9eec729d27c7a70956a6a09",
      "parents": [
        "cabc60e71a65fa17e5a99fba94fc61523fbeb478"
      ],
      "author": {
        "name": "Ian Rogers",
        "email": "irogers@google.com",
        "time": "Fri Sep 28 17:17:10 2012 -0700"
      },
      "committer": {
        "name": "Ian Rogers",
        "email": "irogers@google.com",
        "time": "Wed Oct 03 17:29:26 2012 -0700"
      },
      "message": "Fail threads attaching during runtime shutdown.\n\nIntroduce counters to indicate that threads are being born. Don\u0027t allow\nthread birth to occur during runtime shutdown.\n\nBug: 7000936\n\nChange-Id: Ib0d78f78c0ff126a4b5d3b5a6f1a2ff8f5061ae9\n"
    },
    {
      "commit": "81d425b0b232962441616f8b14f73620bffef5e5",
      "tree": "cd1e46656269acf20e78817d675e56d9b9133e6c",
      "parents": [
        "bfaf917edbb1de8d158c3615e0da8ac3143d10c8"
      ],
      "author": {
        "name": "Ian Rogers",
        "email": "irogers@google.com",
        "time": "Thu Sep 27 16:03:43 2012 -0700"
      },
      "committer": {
        "name": "Ian Rogers",
        "email": "irogers@google.com",
        "time": "Thu Sep 27 17:19:25 2012 -0700"
      },
      "message": "Pass self to lock methods.\n\nThis avoids frequent recomputation of\nThread::Current/pthread_getspecific.\n\nAlso add a futex based reader/writer mutex that is disabled.\n\nChange-Id: I118fdb99ef1d1c4bfda6446ba3a0d8b6ab31eaee\n"
    }
  ]
}