+++ /dev/null
-/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- *
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. The rights granted to you under the License
- * may not be used to create, or enable the creation or redistribution of,
- * unlawful or unlicensed copies of an Apple operating system, or to
- * circumvent, violate, or enable the circumvention or violation of, any
- * terms of an Apple operating system software license agreement.
- *
- * Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this file.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- *
- * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
- */
-/*
- * @OSF_COPYRIGHT@
- *
- */
-
-/*
- * Really a C file, but I'd like to have this code available in both
- * the kernel and the application, so I'll put it in a .h file. This
- * file needs to be included only once in the AIL or ME, into a .c file
- * where it will be compiled.
- */
-
-/*
- * Since these are debug functions, it doesn't matter which processor macro
- * version I use; I don't mind spoiling cache while I'm debugging.
- */
-
-#include <mach/flipc_cb.h>
-/*
- * Print (using printf) all buffers in the communications buffer that
- * are not on any endpoint or on the buffer freelist. Only active
- * endpoints are checked.
- *
- * Note that no locking is done; this function implicitly assumes the
- * communications buffer is in a quiescent state. It is expected that
- * this function will normally be called from a debugger.
- *
- * As long as it is at it, this function prints buffers that are
- * doubly owned (valid pointers to them from two places).
- */
-
-/*
- * Given that these functions will normally be called from the debugger,
- * there isn't any need to globally visible prototypes for them. To
- * eliminate compilation warnings, we include prototypes for the functions
- * here in the file.
- */
-static void flipcdbg_update_bufferset_bitvec(flipc_comm_buffer_ctl_t,
- flipc_data_buffer_t);
-void flipcdbg_print_unowned_buffers(void);
-void flipcdbg_buffer_find_refs(flipc_cb_ptr buffer_cbptr);
-
-#ifdef __GNUC__
-__inline__
-#endif
-static void
-flipcdbg_update_bufferset_bitvec(flipc_comm_buffer_ctl_t cb_ctl,
- flipc_data_buffer_t buffer)
-{
- unsigned char *buffer_base = flipc_cb_base + cb_ctl->data_buffer.start;
- int bitpos = ((((unsigned char *) buffer) - buffer_base)
- / cb_ctl->data_buffer_size);
- int element = bitpos / (sizeof(unsigned long) * 8);
- int subbitpos = bitpos - element * sizeof(unsigned long) * 8;
-
- /* Is that position set already? */
- if (flipc_debug_buffer_bitvec[element] & (1 << subbitpos))
- printf("Buffer 0x%x (idx: %d, cbptr: 0x%x) is multiply referenced.\n",
- buffer, bitpos, FLIPC_CBPTR(buffer));
-
- /* Set it. */
- flipc_debug_buffer_bitvec[element] |= (1 << subbitpos);
-}
-
-void
-flipcdbg_print_unowned_buffers(void)
-{
- flipc_comm_buffer_ctl_t cb_ctl =
- (flipc_comm_buffer_ctl_t) flipc_cb_base;
- int i;
- unsigned long bitvec_length = ((cb_ctl->data_buffer.number + sizeof(unsigned long) * 8)
- / (sizeof(unsigned int) * 8));
- flipc_data_buffer_t current_buffer;
- flipc_endpoint_t current_endpoint;
- flipc_cb_ptr current_cbptr;
- int header_printed = 0;
-
- /* Clean out the bitvec. */
- for (i = 0; i < bitvec_length; i++)
- flipc_debug_buffer_bitvec[i] = 0;
-
- /* Go through the freelist, setting bits for each buffer. */
- for (current_cbptr = cb_ctl->data_buffer.free;
- current_cbptr != FLIPC_CBPTR_NULL;
- current_cbptr = current_buffer->u.free) {
- int bitpos;
- int element, subbitpos;
-
- current_buffer = FLIPC_DATA_BUFFER_PTR(current_cbptr);
- flipcdbg_update_bufferset_bitvec(cb_ctl, current_buffer);
- }
-
- /* Go through all the endpoints, again setting bits for each buffer. */
- for (current_endpoint = FLIPC_ENDPOINT_PTR(cb_ctl->endpoint.start);
- (current_endpoint
- < (FLIPC_ENDPOINT_PTR(cb_ctl->endpoint.start)
- + cb_ctl->endpoint.number));
- current_endpoint++) {
- if (EXTRACT_ENABLED(current_endpoint->saildm_dpb_or_enabled)) {
- flipc_cb_ptr current_ptr =
- (EXTRACT_DPB(current_endpoint->saildm_dpb_or_enabled)
- ? current_endpoint->sme_process_ptr
- : current_endpoint->shrd_acquire_ptr);
- flipc_cb_ptr limit_ptr = current_endpoint->sail_release_ptr;
-
- while (current_ptr != limit_ptr) {
- flipc_cb_ptr current_buffer_cbptr =
- *FLIPC_BUFFERLIST_PTR(current_ptr);
- flipc_data_buffer_t current_buffer =
- FLIPC_DATA_BUFFER_PTR(current_buffer_cbptr);
-
- /* Mark this as set. */
- flipcdbg_update_bufferset_bitvec(cb_ctl, current_buffer);
-
- /* Increment the current pointer. */
- current_ptr = NEXT_BUFFERLIST_PTR_ME(current_ptr,
- current_endpoint);
- }
- }
- }
-
- /* Ok, we should have marked every buffer that has a reference.
- Print out all the ones that done have references. */
- for (i = 0; i < bitvec_length; i++) {
- int this_limit =
- ((i == bitvec_length - 1)
- ? cb_ctl->data_buffer.number % (sizeof(unsigned long)*8)
- : sizeof(unsigned long)*8);
- if (flipc_debug_buffer_bitvec[i] != (unsigned long) -1) {
- int j;
- for (j = 0; j < this_limit; j++) {
- if (!(flipc_debug_buffer_bitvec[i] & (1 << j))) {
- int buffer_bitpos = i * sizeof(unsigned long) * 8 + j;
- flipc_cb_ptr buffer_cbptr =
- (buffer_bitpos * cb_ctl->data_buffer_size
- + cb_ctl->data_buffer.start);
- flipc_data_buffer_t buffer_ptr =
- FLIPC_DATA_BUFFER_PTR(buffer_cbptr);
-
- /* Print header if necessary. */
- if (!header_printed) {
- header_printed = 1;
- printf("Unreferenced buffers (ptr,idx,cbptr):");
- }
-
- /* Print buffer. */
- printf(" (0x%x,%d,0x%x)", buffer_ptr, buffer_bitpos,
- buffer_cbptr);
- }
- }
- }
- }
- if (header_printed)
- printf("\n");
-}
-
-void
-flipcdbg_buffer_find_refs(flipc_cb_ptr buffer_cbptr)
-{
- flipc_comm_buffer_ctl_t cb_ctl =
- (flipc_comm_buffer_ctl_t) flipc_cb_base;
- int found_on_freelist = 0;
- int found_on_endpoints = 0;
- int i;
- flipc_endpoint_t current_endpoint;
-
- flipc_cb_ptr current_cbptr;
- flipc_data_buffer_t current_buffer;
-
- /* Go through the freelist, looking for buffer. */
- for (i = 0, current_cbptr = cb_ctl->data_buffer.free;
- current_cbptr != FLIPC_CBPTR_NULL;
- i++, current_cbptr = current_buffer->u.free) {
- if (current_cbptr == buffer_cbptr) {
- printf("Buffer found on freelist in position %d\n", i);
- found_on_freelist = 1;
- }
- current_buffer = FLIPC_DATA_BUFFER_PTR(current_cbptr);
- if (i > cb_ctl->data_buffer.number) {
- printf ("**Some form of corruption following freelist.**");
- return;
- }
- }
- if (found_on_freelist)
- printf("(Total buffers on freelist: %d/%d)\n", i,
- cb_ctl->data_buffer.number);
-
- /* Go through all the endpoints, again looking for the buffer. */
- for (current_endpoint = FLIPC_ENDPOINT_PTR(cb_ctl->endpoint.start);
- (current_endpoint
- < (FLIPC_ENDPOINT_PTR(cb_ctl->endpoint.start)
- + cb_ctl->endpoint.number));
- current_endpoint++) {
- if (EXTRACT_ENABLED(current_endpoint->saildm_dpb_or_enabled)) {
- flipc_cb_ptr current_ptr =
- (EXTRACT_DPB(current_endpoint->saildm_dpb_or_enabled)
- ? current_endpoint->sme_process_ptr
- : current_endpoint->shrd_acquire_ptr);
- flipc_cb_ptr limit_ptr = current_endpoint->sail_release_ptr;
-
- while (current_ptr != limit_ptr) {
- current_cbptr = *FLIPC_BUFFERLIST_PTR(current_ptr);
-
- if (current_cbptr == buffer_cbptr) {
- printf("Buffer found on endpoint 0x%x (idx: %d)\n",
- current_endpoint,
- (current_endpoint
- - FLIPC_ENDPOINT_PTR(cb_ctl->endpoint.start)));
- found_on_endpoints = 1;
- }
-
- /* Increment the current pointer. */
- current_ptr = NEXT_BUFFERLIST_PTR_ME(current_ptr,
- current_endpoint);
- }
- }
- }
-}
-
-
-
projects / apple / xnu.git / blobdiff