374 lines
8.8 KiB
C
374 lines
8.8 KiB
C
// SPDX-License-Identifier: LGPL-2.1
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/*
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* Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
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*
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*/
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#include "event-parse.h"
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#include "event-parse-local.h"
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#include "event-utils.h"
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/**
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* tep_get_event - returns the event with the given index
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* @tep: a handle to the tep_handle
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* @index: index of the requested event, in the range 0 .. nr_events
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*
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* This returns pointer to the element of the events array with the given index
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* If @tep is NULL, or @index is not in the range 0 .. nr_events, NULL is returned.
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*/
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struct tep_event *tep_get_event(struct tep_handle *tep, int index)
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{
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if (tep && tep->events && index < tep->nr_events)
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return tep->events[index];
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return NULL;
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}
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/**
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* tep_get_first_event - returns the first event in the events array
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* @tep: a handle to the tep_handle
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*
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* This returns pointer to the first element of the events array
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* If @tep is NULL, NULL is returned.
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*/
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struct tep_event *tep_get_first_event(struct tep_handle *tep)
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{
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return tep_get_event(tep, 0);
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}
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/**
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* tep_get_events_count - get the number of defined events
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* @tep: a handle to the tep_handle
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*
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* This returns number of elements in event array
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* If @tep is NULL, 0 is returned.
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*/
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int tep_get_events_count(struct tep_handle *tep)
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{
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if (tep)
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return tep->nr_events;
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return 0;
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}
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/**
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* tep_set_flag - set event parser flag
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* @tep: a handle to the tep_handle
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* @flag: flag, or combination of flags to be set
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* can be any combination from enum tep_flag
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*
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* This sets a flag or combination of flags from enum tep_flag
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*/
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void tep_set_flag(struct tep_handle *tep, int flag)
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{
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if (tep)
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tep->flags |= flag;
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}
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/**
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* tep_clear_flag - clear event parser flag
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* @tep: a handle to the tep_handle
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* @flag: flag to be cleared
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*
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* This clears a tep flag
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*/
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void tep_clear_flag(struct tep_handle *tep, enum tep_flag flag)
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{
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if (tep)
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tep->flags &= ~flag;
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}
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/**
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* tep_test_flag - check the state of event parser flag
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* @tep: a handle to the tep_handle
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* @flag: flag to be checked
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*
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* This returns the state of the requested tep flag.
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* Returns: true if the flag is set, false otherwise.
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*/
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bool tep_test_flag(struct tep_handle *tep, enum tep_flag flag)
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{
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if (tep)
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return (tep->flags & flag);
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return false;
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}
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unsigned short tep_data2host2(struct tep_handle *pevent, unsigned short data)
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{
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unsigned short swap;
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if (!pevent || pevent->host_bigendian == pevent->file_bigendian)
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return data;
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swap = ((data & 0xffULL) << 8) |
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((data & (0xffULL << 8)) >> 8);
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return swap;
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}
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unsigned int tep_data2host4(struct tep_handle *pevent, unsigned int data)
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{
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unsigned int swap;
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if (!pevent || pevent->host_bigendian == pevent->file_bigendian)
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return data;
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swap = ((data & 0xffULL) << 24) |
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((data & (0xffULL << 8)) << 8) |
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((data & (0xffULL << 16)) >> 8) |
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((data & (0xffULL << 24)) >> 24);
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return swap;
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}
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unsigned long long
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tep_data2host8(struct tep_handle *pevent, unsigned long long data)
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{
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unsigned long long swap;
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if (!pevent || pevent->host_bigendian == pevent->file_bigendian)
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return data;
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swap = ((data & 0xffULL) << 56) |
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((data & (0xffULL << 8)) << 40) |
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((data & (0xffULL << 16)) << 24) |
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((data & (0xffULL << 24)) << 8) |
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((data & (0xffULL << 32)) >> 8) |
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((data & (0xffULL << 40)) >> 24) |
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((data & (0xffULL << 48)) >> 40) |
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((data & (0xffULL << 56)) >> 56);
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return swap;
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}
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/**
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* tep_get_header_page_size - get size of the header page
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* @pevent: a handle to the tep_handle
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*
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* This returns size of the header page
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* If @pevent is NULL, 0 is returned.
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*/
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int tep_get_header_page_size(struct tep_handle *pevent)
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{
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if (pevent)
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return pevent->header_page_size_size;
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return 0;
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}
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/**
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* tep_get_header_timestamp_size - get size of the time stamp in the header page
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* @tep: a handle to the tep_handle
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*
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* This returns size of the time stamp in the header page
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* If @tep is NULL, 0 is returned.
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*/
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int tep_get_header_timestamp_size(struct tep_handle *tep)
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{
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if (tep)
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return tep->header_page_ts_size;
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return 0;
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}
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/**
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* tep_get_cpus - get the number of CPUs
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* @pevent: a handle to the tep_handle
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*
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* This returns the number of CPUs
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* If @pevent is NULL, 0 is returned.
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*/
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int tep_get_cpus(struct tep_handle *pevent)
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{
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if (pevent)
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return pevent->cpus;
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return 0;
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}
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/**
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* tep_set_cpus - set the number of CPUs
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* @pevent: a handle to the tep_handle
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*
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* This sets the number of CPUs
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*/
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void tep_set_cpus(struct tep_handle *pevent, int cpus)
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{
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if (pevent)
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pevent->cpus = cpus;
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}
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/**
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* tep_get_long_size - get the size of a long integer on the traced machine
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* @pevent: a handle to the tep_handle
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*
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* This returns the size of a long integer on the traced machine
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* If @pevent is NULL, 0 is returned.
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*/
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int tep_get_long_size(struct tep_handle *pevent)
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{
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if (pevent)
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return pevent->long_size;
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return 0;
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}
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/**
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* tep_set_long_size - set the size of a long integer on the traced machine
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* @pevent: a handle to the tep_handle
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* @size: size, in bytes, of a long integer
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*
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* This sets the size of a long integer on the traced machine
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*/
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void tep_set_long_size(struct tep_handle *pevent, int long_size)
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{
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if (pevent)
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pevent->long_size = long_size;
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}
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/**
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* tep_get_page_size - get the size of a memory page on the traced machine
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* @pevent: a handle to the tep_handle
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*
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* This returns the size of a memory page on the traced machine
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* If @pevent is NULL, 0 is returned.
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*/
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int tep_get_page_size(struct tep_handle *pevent)
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{
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if (pevent)
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return pevent->page_size;
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return 0;
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}
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/**
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* tep_set_page_size - set the size of a memory page on the traced machine
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* @pevent: a handle to the tep_handle
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* @_page_size: size of a memory page, in bytes
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*
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* This sets the size of a memory page on the traced machine
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*/
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void tep_set_page_size(struct tep_handle *pevent, int _page_size)
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{
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if (pevent)
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pevent->page_size = _page_size;
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}
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/**
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* tep_file_bigendian - get if the file is in big endian order
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* @pevent: a handle to the tep_handle
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*
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* This returns if the file is in big endian order
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* If @pevent is NULL, 0 is returned.
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*/
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int tep_file_bigendian(struct tep_handle *pevent)
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{
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if (pevent)
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return pevent->file_bigendian;
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return 0;
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}
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/**
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* tep_set_file_bigendian - set if the file is in big endian order
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* @pevent: a handle to the tep_handle
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* @endian: non zero, if the file is in big endian order
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*
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* This sets if the file is in big endian order
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*/
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void tep_set_file_bigendian(struct tep_handle *pevent, enum tep_endian endian)
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{
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if (pevent)
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pevent->file_bigendian = endian;
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}
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/**
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* tep_is_host_bigendian - get if the order of the current host is big endian
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* @pevent: a handle to the tep_handle
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*
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* This gets if the order of the current host is big endian
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* If @pevent is NULL, 0 is returned.
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*/
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int tep_is_host_bigendian(struct tep_handle *pevent)
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{
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if (pevent)
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return pevent->host_bigendian;
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return 0;
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}
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/**
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* tep_set_host_bigendian - set the order of the local host
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* @pevent: a handle to the tep_handle
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* @endian: non zero, if the local host has big endian order
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*
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* This sets the order of the local host
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*/
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void tep_set_host_bigendian(struct tep_handle *pevent, enum tep_endian endian)
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{
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if (pevent)
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pevent->host_bigendian = endian;
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}
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/**
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* tep_is_latency_format - get if the latency output format is configured
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* @pevent: a handle to the tep_handle
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*
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* This gets if the latency output format is configured
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* If @pevent is NULL, 0 is returned.
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*/
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int tep_is_latency_format(struct tep_handle *pevent)
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{
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if (pevent)
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return pevent->latency_format;
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return 0;
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}
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/**
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* tep_set_latency_format - set the latency output format
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* @pevent: a handle to the tep_handle
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* @lat: non zero for latency output format
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*
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* This sets the latency output format
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*/
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void tep_set_latency_format(struct tep_handle *pevent, int lat)
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{
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if (pevent)
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pevent->latency_format = lat;
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}
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/**
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* tep_is_old_format - get if an old kernel is used
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* @tep: a handle to the tep_handle
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*
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* This returns true, if an old kernel is used to generate the tracing events or
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* false if a new kernel is used. Old kernels did not have header page info.
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* If @tep is NULL, false is returned.
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*/
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bool tep_is_old_format(struct tep_handle *tep)
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{
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if (tep)
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return !!(tep->old_format);
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return false;
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}
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/**
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* tep_set_print_raw - set a flag to force print in raw format
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* @tep: a handle to the tep_handle
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* @print_raw: the new value of the print_raw flag
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*
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* This sets a flag to force print in raw format
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*/
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void tep_set_print_raw(struct tep_handle *tep, int print_raw)
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{
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if (tep)
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tep->print_raw = print_raw;
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}
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/**
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* tep_set_test_filters - set a flag to test a filter string
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* @tep: a handle to the tep_handle
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* @test_filters: the new value of the test_filters flag
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*
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* This sets a flag to test a filter string. If this flag is set, when
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* tep_filter_add_filter_str() API as called,it will print the filter string
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* instead of adding it.
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*/
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void tep_set_test_filters(struct tep_handle *tep, int test_filters)
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{
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if (tep)
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tep->test_filters = test_filters;
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}
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