On the 0x23E day of Apache Harmony Mikhail Fursov wrote: > I have found that it is already in JIRA : > http://issues.apache.org/jira/browse/HARMONY-2084
thanks, Mikhail! I've put the link to HARMONY-2084 to the JIT development task. > On 13 Dec 2006 16:38:59 +0600, Egor Pasko <[EMAIL PROTECTED]> wrote: > > > > On the 0x23D day of Apache Harmony Mikhail Fursov wrote: > > > Are there any samples to reproduce JIT problem? If not I can look > > through > > > my archives.. > > > > I do not have any at the moment. Would be great. Need a sequence of > > potentially exceptional instructions that fill in the maximum method > > size. > > > > > On 12 Dec 2006 19:55:54 +0600, Egor Pasko <[EMAIL PROTECTED]> wrote: > > > > > > > > On the 0x23C day of Apache Harmony Alexey Varlamov wrote: > > > > > 11 Dec 2006 21:20:23 +0600, Egor Pasko <[EMAIL PROTECTED]>: > > > > > > On the 0x23A day of Apache Harmony Alexey Varlamov wrote: > > > > > > > I've looked through "Known issues" page and dropped few items, > > which > > > > > > > were resolved already: > > > > > > > - Java assertions support > > > > > > > - StackOverflowError support for JIT mode > > > > > > > > > > > > why? > > > > > > we do not have SOE 100% safe yet, JIT algorithms can be caught > > with > > > > > > SOE on large bytecodes. We should estimate how much stack we can > > take > > > > > > before each graph traversal activity. Not done yet and leads to a > > > > crash. > > > > > > > > > > > The difference is, a technical imperfection vs missing feature > > (which > > > > > was originally listed) - so feel free to add a detailed TODO record > > > > > instead. > > > > > > > > fine, > > > > > > > > I made a JIT task from that under the new chapter "JIT Stability": > > > > > > > > 4. Avoiding stack overflow in JIT C++ code > > > > > > > > Problem: If compiled method's size is large or in case of aggressive > > > > inlining parameters are set in Jitrino.OPT the latter can crash with > > > > stack overflow while recursively traversing the CFG (=Control Flow > > > > Graph). > > > > > > > > Task: To avoid stack overflows, estimate the amount of space allocated > > > > by each optimization stage, check that it does not exceed the > > > > available free space on the stack. VM provides necessary functionality > > > > to check that via VM helper function get_available_stack_size(). In > > > > dangerous situations stop inlining or return JIT_FAILURE so that other > > > > JITs (for example, Jitrino.JET) can pick the compilation task. > > > > > > > > http://wiki.apache.org/harmony/JIT_Development_Tasks > > > > > > > > if there is a JIRA issue for that, feel free to add a reference. > > > > > > > > -- > > > > Egor Pasko > > > > > > > > > > > > > > > > > -- > > > Mikhail Fursov > > > > -- > > Egor Pasko > > > > > > > -- > Mikhail Fursov -- Egor Pasko
