| | 1 | |
| | 2 | For the gsoc_threads branch, I plan to split the interpreter structure into two parts in order to allow for efficient parallel thread (Task) execution: one global_interpreter structure that is shared and protected by locks or other concurrent access rules and many local_interpreters that run simultaneously in separate OS threads. |
| | 3 | |
| | 4 | For the global data, some things will need to be protected by a global lock, while other things will be read-only by default and require ever interpreter to sync up before they can be written (using the same syncing mechanism as for gc). |
| | 5 | |
| | 6 | I'm not sure if there's actually a difference between schedulers and interpreters. With the event system gone, the scheduler PMC may simply be extraneous. |
| | 7 | |
| | 8 | Here's my first pass at breaking things up: |
| | 9 | |
| | 10 | = Global Interp (one per Parrot) = |
| | 11 | === Lock every time === |
| | 12 | * mem_pools |
| | 13 | * gc_sys |
| | 14 | * gc_registry |
| | 15 | * pdb |
| | 16 | * iglobals |
| | 17 | * hll_info |
| | 18 | * hll_namespace |
| | 19 | * root_namespace |
| | 20 | * caches |
| | 21 | * scheduler (global) |
| | 22 | |
| | 23 | === Assume RO, sync to write === |
| | 24 | * class_hash |
| | 25 | * vtables |
| | 26 | * n_vtable_max |
| | 27 | * n_vtable_alloced |
| | 28 | * piodata |
| | 29 | * op_lib |
| | 30 | * op_count |
| | 31 | * op_info_table |
| | 32 | * op_func_table |
| | 33 | * n_libs |
| | 34 | * all_op_libs |
| | 35 | * debug_flags |
| | 36 | * run_core |
| | 37 | * cores |
| | 38 | * num_cores |
| | 39 | * initial_pf |
| | 40 | * imc_info |
| | 41 | * output_file |
| | 42 | * hash_seed |
| | 43 | * op_mmd_cache |
| | 44 | * const_cstring_table |
| | 45 | * const_cstring_hash |
| | 46 | * recursion_limit |
| | 47 | |
| | 48 | === dunno === |
| | 49 | * lo_var_ptr |
| | 50 | * world_inited |
| | 51 | * exit_handler_list |
| | 52 | * sleeping |
| | 53 | * thread_data |
| | 54 | |
| | 55 | === Apparently not used === |
| | 56 | * task_queue |
| | 57 | * evc_func_table |
| | 58 | * save_func_table |
| | 59 | * parent_interpreter |
| | 60 | |
| | 61 | = Local Interp (One per actually-simultaneous task) = |
| | 62 | * pc (implicit) |
| | 63 | * ctx* |
| | 64 | * flags |
| | 65 | * code |
| | 66 | * dynamic_env* |
| | 67 | * scheduler (local) |
| | 68 | * last_alarm |
| | 69 | * quantum_done |
| | 70 | * current_task |
| | 71 | * current_cont |
| | 72 | |
| | 73 | * current_runloop |
| | 74 | * runloop_jmp_free_list |
| | 75 | * current_runloop_level |
| | 76 | * current_runloop_id |
| | 77 | |
| | 78 | * Environments will require some more thought, since one task can close over data from another. |
| | 79 | |
| | 80 | = Global Scheduler (one per Parrot) = |
| | 81 | * future alarms |
| | 82 | * all tasks |
| | 83 | |
| | 84 | = Local Scheduler (one per interpreter) = |
| | 85 | * task queue |
| | 86 | * next_task_id |
