diff options
Diffstat (limited to 'src/vlib/unix/cj.c')
| -rw-r--r-- | src/vlib/unix/cj.c | 284 |
1 files changed, 0 insertions, 284 deletions
diff --git a/src/vlib/unix/cj.c b/src/vlib/unix/cj.c deleted file mode 100644 index e163e1ae017..00000000000 --- a/src/vlib/unix/cj.c +++ /dev/null @@ -1,284 +0,0 @@ -/* - *------------------------------------------------------------------ - * cj.c - * - * Copyright (c) 2013 Cisco and/or its affiliates. - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - *------------------------------------------------------------------ - */ - -/** - * @file - * Circular journal diagnostic mechanism. - * - * The @c cj thread-safe circular log buffer scheme is occasionally useful - * when chasing bugs. Calls to it should not be checked in. - */ -/*? %%clicmd:group_label Circular Journal %% ?*/ -/*? %%syscfg:group_label Circular Journal %% ?*/ - -#include <stdio.h> -#include <vlib/vlib.h> - -#include <vlib/unix/cj.h> - -cj_main_t cj_main; - -void -cj_log (u32 type, void *data0, void *data1) -{ - u64 new_tail; - cj_main_t *cjm = &cj_main; - cj_record_t *r; - - if (cjm->enable == 0) - return; - - new_tail = clib_atomic_add_fetch (&cjm->tail, 1); - - r = (cj_record_t *) & (cjm->records[new_tail & (cjm->num_records - 1)]); - r->time = vlib_time_now (cjm->vlib_main); - r->thread_index = vlib_get_thread_index (); - r->type = type; - r->data[0] = pointer_to_uword (data0); - r->data[1] = pointer_to_uword (data1); -} - -void -cj_stop (void) -{ - cj_main_t *cjm = &cj_main; - - cjm->enable = 0; -} - - -clib_error_t * -cj_init (vlib_main_t * vm) -{ - cj_main_t *cjm = &cj_main; - - cjm->vlib_main = vm; - return 0; -} - -VLIB_INIT_FUNCTION (cj_init); - -static clib_error_t * -cj_config (vlib_main_t * vm, unformat_input_t * input) -{ - cj_main_t *cjm = &cj_main; - int matched = 0; - int enable = 0; - - while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) - { - if (unformat (input, "records %d", &cjm->num_records)) - matched = 1; - else if (unformat (input, "on")) - enable = 1; - else - return clib_error_return (0, "cj_config: unknown input '%U'", - format_unformat_error, input); - } - - if (matched == 0) - return 0; - - cjm->num_records = max_pow2 (cjm->num_records); - vec_validate (cjm->records, cjm->num_records - 1); - clib_memset (cjm->records, 0xff, cjm->num_records * sizeof (cj_record_t)); - cjm->tail = ~0; - cjm->enable = enable; - - return 0; -} - -/*? - * Configure the circular journal diagnostic mechanism. This is only useful - * if you, the developer, have written code to make use of the circular - * journal. - * - * @cfgcmd{records, <number>} - * Configure the number of records to allocate for the circular journal. - * - * @cfgcmd{on} - * Enable the collection of records in the circular journal at the - * earliest opportunity. -?*/ -VLIB_CONFIG_FUNCTION (cj_config, "cj"); - -void -cj_enable_disable (int is_enable) -{ - cj_main_t *cjm = &cj_main; - - if (cjm->num_records) - cjm->enable = is_enable; - else - vlib_cli_output (cjm->vlib_main, "CJ not configured..."); -} - -static inline void -cj_dump_one_record (cj_record_t * r) -{ - fprintf (stderr, "[%d]: %10.6f T%02d %llx %llx\n", - r->thread_index, r->time, r->type, - (long long unsigned int) r->data[0], - (long long unsigned int) r->data[1]); -} - -static void -cj_dump_internal (u8 filter0_enable, u64 filter0, - u8 filter1_enable, u64 filter1) -{ - cj_main_t *cjm = &cj_main; - cj_record_t *r; - u32 i, index; - - if (cjm->num_records == 0) - { - fprintf (stderr, "CJ not configured...\n"); - return; - } - - if (cjm->tail == (u64) ~ 0) - { - fprintf (stderr, "No data collected...\n"); - return; - } - - /* Has the trace wrapped? */ - index = (cjm->tail + 1) & (cjm->num_records - 1); - r = &(cjm->records[index]); - - if (r->thread_index != (u32) ~ 0) - { - /* Yes, dump from tail + 1 to the end */ - for (i = index; i < cjm->num_records; i++) - { - if (filter0_enable && (r->data[0] != filter0)) - goto skip; - if (filter1_enable && (r->data[1] != filter1)) - goto skip; - cj_dump_one_record (r); - skip: - r++; - } - } - /* dump from the beginning through the final tail */ - r = cjm->records; - for (i = 0; i < index; i++) - { - if (filter0_enable && (r->data[0] != filter0)) - goto skip2; - if (filter1_enable && (r->data[1] != filter1)) - goto skip2; - cj_dump_one_record (r); - skip2: - r++; - } -} - -void -cj_dump (void) -{ - cj_dump_internal (0, 0, 0, 0); -} - -void -cj_dump_filter_data0 (u64 filter0) -{ - cj_dump_internal (1 /* enable f0 */ , filter0, 0, 0); -} - -void -cj_dump_filter_data1 (u64 filter1) -{ - cj_dump_internal (0, 0, 1 /* enable f1 */ , filter1); -} - -void -cj_dump_filter_data12 (u64 filter0, u64 filter1) -{ - cj_dump_internal (1, filter0, 1, filter1); -} - -static clib_error_t * -cj_command_fn (vlib_main_t * vm, - unformat_input_t * input, vlib_cli_command_t * cmd) -{ - int is_enable = -1; - int is_dump = -1; - unformat_input_t _line_input, *line_input = &_line_input; - clib_error_t *error = NULL; - - /* Get a line of input. */ - if (!unformat_user (input, unformat_line_input, line_input)) - return clib_error_return (0, "expected enable | disable | dump"); - - while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) - { - if (unformat (line_input, "enable") || unformat (line_input, "on")) - is_enable = 1; - else if (unformat (line_input, "disable") - || unformat (line_input, "off")) - is_enable = 0; - else if (unformat (line_input, "dump")) - is_dump = 1; - else - { - error = clib_error_return (0, "unknown input `%U'", - format_unformat_error, line_input); - goto done; - } - } - - if (is_enable >= 0) - cj_enable_disable (is_enable); - - if (is_dump > 0) - cj_dump (); - -done: - unformat_free (line_input); - return error; -} - -/*? - * Enable, disable the collection of diagnostic data into a - * circular journal or dump the circular journal diagnostic data. - * This is only useful if you, the developer, have written code to make - * use of the circular journal. - * - * When dumping the data it is formatted and sent to @c stderr of the - * VPP process; when running VPP in <code>unix interactive</code> mode - * this is typically the same place as the Debug CLI. -?*/ - -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (cj_command,static) = { - .path = "cj", - .short_help = "cj <enable | disable | dump>", - .function = cj_command_fn, -}; -/* *INDENT-ON* */ - - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |