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a41c32105c
There are internal library functions, which are not declared as a static. They are used inside the library from different files. Hide them from the library users, as they are not part of the API. These functions are made hidden and are renamed without the prefix "tep_": tep_free_plugin_paths tep_peek_char tep_buffer_init tep_get_input_buf_ptr tep_get_input_buf tep_read_token tep_free_token tep_free_event tep_free_format_field __tep_parse_format Link: https://lore.kernel.org/linux-trace-devel/e4afdd82deb5e023d53231bb13e08dca78085fb0.camel@decadent.org.uk/ Reported-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: linux-trace-devel@vger.kernel.org Link: http://lore.kernel.org/lkml/20200930110733.280534-1-tz.stoyanov@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
333 lines
7.8 KiB
C
333 lines
7.8 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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__hidden unsigned short data2host2(struct tep_handle *tep, unsigned short data)
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{
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unsigned short swap;
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if (!tep || tep->host_bigendian == tep->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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__hidden unsigned int data2host4(struct tep_handle *tep, unsigned int data)
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{
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unsigned int swap;
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if (!tep || tep->host_bigendian == tep->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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__hidden unsigned long long
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data2host8(struct tep_handle *tep, unsigned long long data)
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{
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unsigned long long swap;
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if (!tep || tep->host_bigendian == tep->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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* @tep: 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 @tep is NULL, 0 is returned.
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*/
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int tep_get_header_page_size(struct tep_handle *tep)
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{
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if (tep)
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return tep->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 timestamp 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 timestamp 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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* @tep: 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 @tep is NULL, 0 is returned.
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*/
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int tep_get_cpus(struct tep_handle *tep)
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{
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if (tep)
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return tep->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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* @tep: 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 *tep, int cpus)
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{
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if (tep)
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tep->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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* @tep: 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 @tep is NULL, 0 is returned.
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*/
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int tep_get_long_size(struct tep_handle *tep)
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{
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if (tep)
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return tep->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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* @tep: 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 *tep, int long_size)
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{
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if (tep)
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tep->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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* @tep: 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 @tep is NULL, 0 is returned.
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*/
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int tep_get_page_size(struct tep_handle *tep)
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{
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if (tep)
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return tep->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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* @tep: 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 *tep, int _page_size)
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{
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if (tep)
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tep->page_size = _page_size;
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}
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/**
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* tep_is_file_bigendian - return the endian of the file
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* @tep: a handle to the tep_handle
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*
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* This returns true if the file is in big endian order
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* If @tep is NULL, false is returned.
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*/
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bool tep_is_file_bigendian(struct tep_handle *tep)
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{
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if (tep)
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return (tep->file_bigendian == TEP_BIG_ENDIAN);
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return false;
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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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* @tep: 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 *tep, enum tep_endian endian)
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{
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if (tep)
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tep->file_bigendian = endian;
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}
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/**
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* tep_is_local_bigendian - return the endian of the saved local machine
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* @tep: a handle to the tep_handle
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*
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* This returns true if the saved local machine in @tep is big endian.
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* If @tep is NULL, false is returned.
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*/
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bool tep_is_local_bigendian(struct tep_handle *tep)
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{
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if (tep)
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return (tep->host_bigendian == TEP_BIG_ENDIAN);
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return 0;
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}
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/**
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* tep_set_local_bigendian - set the stored local machine endian order
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* @tep: 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 endian order for the local machine.
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*/
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void tep_set_local_bigendian(struct tep_handle *tep, enum tep_endian endian)
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{
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if (tep)
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tep->host_bigendian = endian;
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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_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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