summaryrefslogtreecommitdiff
path: root/ipc/ipc_entry.c
AgeCommit message (Collapse)Author
2015-07-15ipc: fix the locking of the IPC entry allocation functionsJustus Winter
* ipc/ipc_entry.c (ipc_entry_alloc): Assume the space is write-locked. (ipc_entry_alloc_name): Likewise. * ipc/ipc_object.c: Fix the locking around all call sites to the two functions where the space was not locked before.
2015-05-20ipc: inline key ipc entry lookup functionsJustus Winter
Declare functions looking up IPC entries that were previously inlined manually with `static inline' so that they will be inlined into the fast paths by the compiler. * ipc/ipc_entry.c (ipc_entry_lookup, ipc_entry_get, ipc_entry_dealloc): Move functions... * ipc/ipc_space.h: ... here, and declare them as `static inline'. * ipc/ipc_entry.h: Drop associated declarations.
2015-05-20ipc: replace the IPC table with a radix treeJustus Winter
Currently, the port names are mapped to an IPC object (e.g. a port) using a table. This, however, requires large chunks of continuous memory, and leads to scalability problems as virtual kernel memory is a scarce resource. To avoid excessive overhead, non-contiguous port names are spilled into a splay tree. Replace the IPC table with a radix tree. As the radix tree is able to store non-contiguous names with reasonable overhead, we can drop the splay tree as well. * ipc/ipc_entry.c (ipc_entry_tree_collision): Remove function. (ipc_entry_cache): New variable. (ipc_entry_lookup): Replace with a radix tree lookup. (ipc_entry_get): The free list handling is changed a little. Adopt accordingly. (ipc_entry_free_name): New function. (ipc_entry_alloc): Adopt accordingly. (ipc_entry_alloc_name): Likewise. (ipc_entry_dealloc): Likewise. (ipc_entry_grow_table): Remove function. * ipc/ipc_entry.h (struct ipc_entry): Update comment, add field for name and free list, remove unused fields. (ipc_entry_cache, ie_alloc, ie_free): New declarations. (struct ipc_tree_entry): Remove. Also remove any related declarations. (ipc_entry_grow_table): Remove declaration. * ipc/ipc_init.c (ipc_bootstrap): Adopt initialization. * ipc/ipc_kmsg.c (ipc_kmsg_copyout_header): Use `ipc_entry_alloc' instead of re-coding it. Adopt free list handling. (ipc_kmsg_copyout_object): Adopt free list handling, store the name. * ipc/ipc_object.c (ipc_object_copyout): Likewise. (ipc_object_copyout_multiname): Likewise. * ipc/ipc_space.c (ipc_space_create): Initialize radix tree and free list. Drop table and splay tree initialization. (ipc_space_destroy): Free ipc entries and radix tree, remove table and splay tree cleanup. * ipc/ipc_space.h (struct ipc_space): Add radix tree, free list, and size. Remove all fields related to the table and splay tree. * ddb/db_print.c (db_port_iterate): Adopt iteration. (db_lookup_port): Adopt lookup. * include/mach_debug/ipc_info.h: Remove unused parts of the debug interface. * include/mach_debug/mach_debug.defs: Likewise. * include/mach_debug/mach_debug_types.defs: Likewise. * ipc/mach_debug.c: Likewise. * ipc/ipc_right.c (ipc_right_reverse): Adopt lookup, store name. (ipc_right_check): Adopt removal. (ipc_right_destroy): Likewise. (ipc_right_dealloc): Likewise. (ipc_right_delta): Likewise. (ipc_right_copyin): Adopt insertion, adopt removal. (ipc_right_copyin_two): Adopt removal. (ipc_right_copyout): Adopt insertion, adopt removal. (ipc_right_rename): Likewise, also update comment. * ipc/mach_port.c (mach_port_names): Adopt iteration. (mach_port_get_set_status): Likewise. * ipc/port.h: Update comment. * ipc/ipc_hash.c: Delete file. * ipc/ipc_hash.h: Likewise. * ipc/ipc_splay.c: Likewise. * ipc/ipc_splay.h: Likewise. * Makefrag.am (libkernel_a_SOURCES): Remove these files.
2015-05-20ipc: replace reverse hash table with a radix treeJustus Winter
Currently, there is a hash table mapping (space, object) tuples to `ipc_entry' objects. This hash table is intertwined with the IPC tables. There is one hash table per IPC space, but it is only for the entries in the IPC table. This hash table is called `local' in the source. All IPC entries being spilled into the splay tree are instead mapped by a global hash table. Replace the local (i.e. per IPC space) reverse hash table with a radix tree. * ipc/ipc_entry.c (ipc_entry_grow_table): Adjust accordingly. * ipc/ipc_entry.h (struct ipc_entry): Adjust comment. * ipc/ipc_hash.c: Adjust comment explaining the local lookup table. (IPC_LOCAL_HASH_INVARIANT): New macro. (ipc_hash_local_lookup): Use the new `ipc_reverse_lookup' function. (ipc_hash_local_insert): Use the new `ipc_reverse_insert' function. (ipc_hash_local_delete): Use the new `ipc_reverse_remove' function. * ipc/ipc_space.c (ipc_space_create): Initialize radix tree. (ipc_space_destroy): Free radix tree. * ipc/ipc_space.h (struct ipc_space): Add radix tree. (ipc_reverse_insert): New function. (ipc_reverse_remove): Likewise. (ipc_reverse_remove_all): Likewise. (ipc_reverse_lookup): Likewise. * ipc/ipc_right.c (ipc_right_clean): Update comment.
2014-04-04Convert from K&R to ANSIMarin Ramesa
Convert from K&R style function definitions to ANSI style function definitions. * ddb/db_access.c: Convert function prototypes from K&R to ANSI. * ddb/db_aout.c: Likewise. * ddb/db_break.c: Likewise. * ddb/db_command.c: Likewise. * ddb/db_cond.c: Likewise. * ddb/db_examine.c: Likewise. * ddb/db_expr.c: Likewise. * ddb/db_ext_symtab.c: Likewise. * ddb/db_input.c: Likewise. * ddb/db_lex.c: Likewise. * ddb/db_macro.c: Likewise. * ddb/db_mp.c: Likewise. * ddb/db_output.c: Likewise. * ddb/db_print.c: Likewise. * ddb/db_run.c: Likewise. * ddb/db_sym.c: Likewise. * ddb/db_task_thread.c: Likewise. * ddb/db_trap.c: Likewise. * ddb/db_variables.c: Likewise. * ddb/db_watch.c: Likewise. * device/blkio.c: Likewise. * device/chario.c: Likewise. * device/dev_lookup.c: Likewise. * device/dev_name.c: Likewise. * device/dev_pager.c: Likewise. * device/ds_routines.c: Likewise. * device/net_io.c: Likewise. * device/subrs.c: Likewise. * i386/i386/db_interface.c: Likewise. * i386/i386/fpu.c: Likewise. * i386/i386/io_map.c: Likewise. * i386/i386/loose_ends.c: Likewise. * i386/i386/mp_desc.c: Likewise. * i386/i386/pcb.c: Likewise. * i386/i386/phys.c: Likewise. * i386/i386/trap.c: Likewise. * i386/i386/user_ldt.c: Likewise. * i386/i386at/com.c: Likewise. * i386/i386at/kd.c: Likewise. * i386/i386at/kd_event.c: Likewise. * i386/i386at/kd_mouse.c: Likewise. * i386/i386at/kd_queue.c: Likewise. * i386/i386at/lpr.c: Likewise. * i386/i386at/model_dep.c: Likewise. * i386/i386at/rtc.c: Likewise. * i386/intel/pmap.c: Likewise. * i386/intel/read_fault.c: Likewise. * ipc/ipc_entry.c: Likewise. * ipc/ipc_hash.c: Likewise. * ipc/ipc_kmsg.c: Likewise. * ipc/ipc_marequest.c: Likewise. * ipc/ipc_mqueue.c: Likewise. * ipc/ipc_notify.c: Likewise. * ipc/ipc_port.c: Likewise. * ipc/ipc_right.c: Likewise. * ipc/mach_debug.c: Likewise. * ipc/mach_msg.c: Likewise. * ipc/mach_port.c: Likewise. * ipc/mach_rpc.c: Likewise. * kern/act.c: Likewise. * kern/exception.c: Likewise. * kern/ipc_mig.c: Likewise. * kern/ipc_tt.c: Likewise. * kern/lock_mon.c: Likewise. * kern/mach_clock.c: Likewise. * kern/machine.c: Likewise. * kern/printf.c: Likewise. * kern/priority.c: Likewise. * kern/startup.c: Likewise. * kern/syscall_emulation.c: Likewise. * kern/syscall_subr.c: Likewise. * kern/thread_swap.c: Likewise. * kern/time_stamp.c: Likewise. * kern/timer.c: Likewise. * kern/xpr.c: Likewise. * vm/memory_object.c: Likewise. * vm/vm_debug.c: Likewise. * vm/vm_external.c: Likewise. * vm/vm_fault.c: Likewise. * vm/vm_kern.c: Likewise. * vm/vm_map.c: Likewise. * vm/vm_pageout.c: Likewise. * vm/vm_user.c: Likewise.
2013-12-17ipc: qualify pointers whose dereferenced values are constant with constMarin Ramesa
2013-12-05ipc/ipc_entry.c: remove forward declarationMarin Ramesa
* ipc/ipc_entry.c (db_ipc_object_by_name): Remove forward declaration. * ipc/ipc_entry.h (db_ipc_object_by_name): Add prototype.
2011-12-17Adjust the kernel to use the slab allocatorRichard Braun
* device/dev_lookup.c: Replace zalloc header, types and function calls with their slab counterparts. * device/dev_pager.c: Likewise. * device/ds_routines.c: Likewise. * device/io_req.h: Likewise. * device/net_io.c: Likewise. * i386/i386/fpu.c: Likewise. * i386/i386/io_perm.c: Likewise. * i386/i386/machine_task.c: Likewise. * i386/i386/pcb.c: Likewise. * i386/i386/task.h: Likewise. * i386/intel/pmap.c: Likewise. * i386/intel/pmap.h: Remove #include <kernel/zalloc.h>. * include/mach_debug/mach_debug.defs (host_zone_info): Replace routine declaration with skip directive. (host_slab_info): New routine declaration. * include/mach_debug/mach_debug_types.defs (zone_name_t) (zone_name_array_t, zone_info_t, zone_info_array_t): Remove types. (cache_info_t, cache_info_array_t): New types. * include/mach_debug/mach_debug_types.h: Replace #include <mach_debug/zone_info.h> with <mach_debug/slab_info.h>. * ipc/ipc_entry.c: Replace zalloc header, types and function calls with their slab counterparts. * ipc/ipc_entry.h: Likewise. * ipc/ipc_init.c: Likewise. * ipc/ipc_marequest.c: Likewise. * ipc/ipc_object.c: Likewise. * ipc/ipc_object.h: Likewise. * ipc/ipc_space.c: Likewise. * ipc/ipc_space.h: Likewise. * ipc/ipc_table.c (kalloc_map): Remove extern declaration. * kern/act.c: Replace zalloc header, types and function calls with their slab counterparts. * kern/kalloc.h: Add #include <vm/vm_types.h>. (MINSIZE): Remove definition. (kalloc_map): Add extern declaration. (kget): Remove prototype. * kern/mach_clock.c: Adjust comment. * kern/processor.c: Replace zalloc header, types and function calls with their slab counterparts. * kern/startup.c: Remove #include <kernel/zalloc.h>. * kern/task.c: Replace zalloc header, types and function calls with their slab counterparts. * kern/thread.c: Likewise. * vm/memory_object_proxy.c: Likewise. * vm/vm_external.c: Likewise. * vm/vm_fault.c: Likewise. * vm/vm_init.c: Likewise. * vm/vm_map.c: Likewise. * vm/vm_object.c: Likewise. * vm/vm_page.h: Remove #include <kernel/zalloc.h>. * vm/vm_pageout.c: Replace zalloc header, types and function calls with their slab counterparts. * vm/vm_resident.c: Likewise. (zdata, zdata_size): Remove declarations. (vm_page_bootstrap): Don't steal memory for the zone system.
2011-04-23Drop spurious warningSamuel Thibault
* ipc/ipc_entry.c (ipc_entry_get): Do not warn when ipc_entry_get returns KERN_NO_SPACE.
2011-04-22Warn once when part of the kernel is lacking spaceSamuel Thibault
* ipc/ipc_entry.c (ipc_entry_get, ipc_entry_grow_table): Warn when returning KERN_NO_SPACE. * vm/vm_map.c (vm_map_find_entry, vm_map_enter, vm_map_copyout, vm_map_copyout_page_list): Warn when returning KERN_NO_SPACE.
2009-06-182006-11-09 Barry deFreese <bddebian@comcast.net>Samuel Thibault
[task #5726 --- ``GCC built-in functions''] * include/printf.h: Move file... * kern/printf.h: ... here. * kern/debug.h (panic_init, panic): Add prototypes. * chips/busses.c: Don't include `printf.h', include `kern/printf.h' and `kern/debug.h'. * ddb/db_command.c: Likewise. * ddb/db_cond.c: Likewise. * ddb/db_output.c: Likewise. * device/cirbuf.c: Likewise. * device/cons.c: Likewise. * device/dev_name.c: Likewise. * device/dev_pager.c: Likewise. * device/device_init.c: Likewise. * device/dk_label.c: Likewise. * device/ds_routines.c: Likewise. * device/net_io.c: Likewise. * device/subrs.c: Likewise. * i386/i386/debug_i386.c: Likewise. * i386/i386/fpe_linkage.c: Likewise. * i386/i386/fpu.c: Likewise. * i386/i386/io_map.c: Likewise. * i386/i386/kttd_interface.c: Likewise. * i386/i386/mp_desc.c: Likewise. * i386/i386/pcb.c: Likewise. * i386/i386/pic.c: Likewise. * i386/i386/trap.c: Likewise. * i386/i386at/autoconf.c: Likewise. * i386/i386at/com.c: Likewise. * i386/i386at/i386at_ds_routines.c: Likewise. * i386/i386at/kd.c: Likewise. * i386/i386at/kd_event.c: Likewise. * i386/i386at/kd_mouse.c: Likewise. * i386/i386at/lpr.c: Likewise. * i386/i386at/model_dep.c: Likewise. * i386/intel/pmap.c: Likewise. * ipc/ipc_entry.c: Likewise. * ipc/ipc_hash.c: Likewise. * ipc/ipc_kmsg.c: Likewise. * ipc/ipc_mqueue.c: Likewise. * ipc/ipc_notify.c: Likewise. * ipc/ipc_object.c: Likewise. * ipc/ipc_port.c: Likewise. * ipc/ipc_pset.c: Likewise. * ipc/ipc_right.c: Likewise. * ipc/mach_msg.c: Likewise. * ipc/mach_port.c: Likewise. * ipc/mach_rpc.c: Likewise. * kern/act.c: Likewise. * kern/ast.c: Likewise. * kern/bootstrap.c: Likewise. * kern/debug.c: Likewise. * kern/eventcount.c: Likewise. * kern/exception.c: Likewise. * kern/host.c: Likewise. * kern/ipc_host.c: Likewise. * kern/ipc_kobject.c: Likewise. * kern/ipc_mig.c: Likewise. * kern/ipc_sched.c: Likewise. * kern/ipc_tt.c: Likewise. * kern/kalloc.c: Likewise. * kern/lock.c: Likewise. * kern/mach_clock.c: Likewise. * kern/machine.c: Likewise. * kern/pc_sample.c: Likewise. * kern/printf.c: Likewise. * kern/processor.c: Likewise. * kern/sched_prim.c: Likewise. * kern/server_loop.ch: Likewise. * kern/startup.c: Likewise. * kern/task.c: Likewise. * kern/thread.c: Likewise. * kern/thread_swap.c: Likewise. * kern/xpr.c: Likewise. * kern/zalloc.c: Likewise. * vm/memory_object.c: Likewise. * vm/vm_debug.c: Likewise. * vm/vm_fault.c: Likewise. * vm/vm_kern.c: Likewise. * vm/vm_map.c: Likewise. * vm/vm_object.c: Likewise. * vm/vm_object.h: Likewise. * vm/vm_pageout.c: Likewise. * vm/vm_resident.c: Likewise.
2009-06-182006-11-07 Barry deFreese <bddebian@comcast.net>Samuel Thibault
[task #5726 --- ``GCC built-in functions''] * include/printf.h: New file. (printf_init, _doprnt, printnum, sprintf, printf, indent, iprint): New declarations. * include/string.h (strchr, strcmp, strcpy, strlen, strncmp, strncpy, strrchr, strsep): New extern declarations. * kern/strings.c: Don't include `kern/strings.h', include `string.h'. (strncmp, strncpy, strlen): Fix prototypes into using size_t. * kern/strings.h: Removed file. * kern/debug.c: Include `printf.h'. (do_cnputc): New function. (panic, log): Use do_cnputc instead of cnputc. * chips/busses.c: Don't include `kern/strings.h', include `printf.h' and `string.h'. (_doprnt): Remove extern declaration. (indent): Remove extern declaration. * chips/busses.c: Likewise. * ddb/db_aout.c: Likewise. * ddb/db_command.c: Likewise. * ddb/db_lex.c: Likewise. * ddb/db_macro.c: Likewise. * ddb/db_output.c: Likewise. * ddb/db_print.c: Likewise. * ddb/db_sym.c: Likewise. * device/dev_name.c: Likewise. * device/dev_pager.c: Likewise. * device/dk_label.c: Likewise. * device/ds_routines.c: Likewise. * device/net_io.c: Likewise. * device/subrs.c: Likewise. * i386/i386/db_trace.c: Likewise. * i386/i386/debug_i386.c: Likewise. * i386/i386/fpu.c: Likewise. * i386/i386/io_map.c: Likewise. * i386/i386/kttd_interface.c: Likewise. * i386/i386/pic.c: Likewise. * i386/i386/trap.c: Likewise. * i386/i386at/autoconf.c: Likewise. * i386/i386at/com.c: Likewise. * i386/i386at/i386at_ds_routines.c: Likewise. * i386/i386at/kd.c: Likewise. * i386/i386at/kd_event.c: Likewise. * i386/i386at/kd_mouse.c: Likewise. * i386/i386at/lpr.c: Likewise. * i386/i386at/model_dep.c: Likewise. * i386/intel/pmap.c: Likewise. * ipc/ipc_entry.c: Likewise. * ipc/ipc_hash.c: Likewise. * ipc/ipc_kmsg.c: Likewise. * ipc/ipc_notify.c: Likewise. * ipc/ipc_object.c: Likewise. * ipc/ipc_port.c: Likewise. * ipc/ipc_pset.c: Likewise. * ipc/mach_msg.c: Likewise. * ipc/mach_port.c: Likewise. * ipc/mach_rpc.c: Likewise. * kern/bootstrap.c: Likewise. * kern/eventcount.c: Likewise. * kern/ipc_kobject.c: Likewise. * kern/pc_sample.c: Likewise. * kern/printf.c: Likewise. * kern/sched_prim.c: Likewise. * kern/thread.c: Likewise. * kern/zalloc.c: Likewise. * vm/vm_fault.c: Likewise. * vm/vm_map.c: Likewise. * vm/vm_object.c: Likewise. * vm/vm_resident.c: Likewise.
2009-06-182006-11-05 Barry deFreese <bddebian@comcast.net>Samuel Thibault
memcpy/memset cleanup. * include/string.h: New file. * include/mach/mig_support.h: Include `string.h'. [MACH_KERNEL] (bcopy): Remove extern declaration. [MACH_KERNEL] (memcpy): Remove macro. * device/cirbuf.c: Include `string.h'. (q_to_b, b_to_q): Replace bcopy() with memcpy() and bzero() with memset(), clean memcpy() and memset() invocation. * device/cons.c (cnputc): Likewise. * device/dev_pager.c (device_pager_data_request_done): Likewise. * device/ds_routines.c (device_write_get, ds_read_done): Likewise. * device/kmsg.c: Likewise. * device/net_io.c (net_filter, net_set_filter, net_getstat): Likewise. * i386/i386/fpu.c (fpu_set_state, fpu_get_state) fp_load) (fp_state_alloc): Likewise. * i386/i386/iopb.c (io_tss_init, i386_io_port_list): Likewise. * i386/i386/mp_desc.c (mp_desc_init): Likewise. * i386/i386/pcb.c (pcb_init, thread_setstatus) (thread_getstatus): Likewise. * i386/i386/phys.c (pmap_zero_page, pmap_copy_page, copy_to_phys) (copy_from_phys): Likewise. * i386/i386/trap.c (v86_assist): Likewise. * i386/i386/user_ldt.c (i386_set_ldt, i386_get_ldt): Likewise. * i386/i386at/immc.c (immc_cnputc): Likewise. * i386/i386at/kd_event.c (X_kdb_enter_init, X_kdb_exit_init): Likewise. * i386/intel/pmap.c (pmap_init, pmap_page_table_page_alloc) (pmap_create): Likewise. * ipc/ipc_entry.c (ipc_entry_grow_table): Likewise. * ipc/ipc_kmsg.c (ipc_kmsg_get_from_kernel) (ipc_kmsg_put_to_kernel): Likewise. * ipc/ipc_object.c (ipc_object_alloc, ipc_object_alloc_name): Likewise. * ipc/ipc_port.c (ipc_port_dngrow): Likewise. * ipc/ipc_space.c: Likewise. * ipc/mach_debug.c (mach_port_space_info) (mach_port_space_info): Likewise. * kern/act.c (act_create): Likewise. * kern/boot_script.c: Likewise. * kern/bootstrap.c: Likewise. * kern/eventcount.c (evc_init): Likewise. * kern/host.c (host_info, host_processor_sets): Likewise. * kern/lock.c (lock_init): Likewise. * kern/lock_mon.c (lock_info_clear): Likewise. * kern/mach_clock.c (mapable_time_init): Likewise. * kern/pc_sample.c (get_sampled_pcs): Likewise. * kern/processor.c (processor_set_things): Likewise. * kern/syscall_emulation.c (task_set_emulation_vector_internal) (task_get_emulation_vector, xxx_task_get_emulation_vector): Likewise. * kern/task.c (task_threads): Likewise. * kern/xpr.c (xprbootstrap): Likewise. * kern/zalloc.c (host_zone_info): Likewise. * vm/vm_debug.c (mach_vm_object_pages): Likewise. * vm/vm_kern.c (projected_buffer_allocate, copyinmap) (copyoutmap): Likewise. * vm/vm_object.c (vm_object_bootstrap): Likewise. * vm/vm_resident.c (vm_page_grab_contiguous_pages): Likewise.
1997-04-23[MACH_KDB]: Add include of <kern/task.h>.Miles Bader
1997-02-25Initial sourceThomas Bushnell