| /* |
| * Copyright 2012 Google Inc. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA |
| */ |
| |
| #include <stdint.h> |
| #include <stdio.h> |
| #include <sysinfo.h> |
| |
| #include "base/fwdb.h" |
| #include "base/init_funcs.h" |
| #include "base/time.h" |
| #include "base/timestamp.h" |
| #include "drivers/timer/timer.h" |
| |
| static TimestampTable *timestamp_table; |
| |
| static int timestamp_table_max_entries(TimestampTable *table, size_t size) |
| { |
| size_t entries_size = size - offsetof(TimestampTable, entries); |
| return entries_size / sizeof(TimestampEntry); |
| } |
| |
| static void timestamp_table_init(TimestampTable *table, size_t size) |
| { |
| table->base_time = 0; |
| table->max_entries = timestamp_table_max_entries(table, size); |
| table->num_entries = 0; |
| } |
| |
| static int timestamp_table_install(void) |
| { |
| if (timestamp_table) { |
| printf("Timestamp table is already initialized.\n"); |
| return 1; |
| } |
| |
| FwdbEntry default_entry = { |
| .size = offsetof(TimestampTable, entries) + |
| CONFIG_MAX_TIMESTAMPS * sizeof(TimestampEntry), |
| }; |
| FwdbEntry entry; |
| if (fwdb_access("timestamp table", &entry, &default_entry)) |
| return 1; |
| TimestampTable *table = (TimestampTable *)entry.ptr; |
| if (!table->max_entries) |
| timestamp_table_init(table, entry.size); |
| |
| int max_entries = timestamp_table_max_entries(table, entry.size); |
| if (table->max_entries > max_entries) { |
| printf("Timestamp table max entries too high.\n"); |
| return 1; |
| } |
| |
| if (table->num_entries > table->max_entries) { |
| printf("Timestamp table over filled.\n"); |
| return 1; |
| } |
| |
| timestamp_table = table; |
| |
| timestamp_add_now(TS_START); |
| return 0; |
| } |
| |
| INIT_FUNC_TIMESTAMP(timestamp_table_install) |
| |
| void timestamp_add(TimestampId id, uint64_t time) |
| { |
| TimestampEntry *tse; |
| |
| if (!timestamp_table || |
| (timestamp_table->num_entries == |
| timestamp_table->max_entries)) { |
| return; |
| } |
| |
| tse = ×tamp_table->entries[timestamp_table->num_entries++]; |
| tse->id = id; |
| tse->stamp = time - timestamp_table->base_time; |
| } |
| |
| void timestamp_add_now(TimestampId id) |
| { |
| if (CONFIG_TIMESTAMP_RAW) |
| timestamp_add(id, timer_raw_value()); |
| else |
| timestamp_add(id, time_us(0)); |
| } |