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freebsd-dev/lib/libpmc/libpmc_json.cc
Enji Cooper b3d01a2ad7 Fix warnings with lib/libpmc 
* Use `MIN` instead of similar hand rolled macro.
* Sort headers.
* Use `errno.h` instead of `sys/errno.h`.
* Wrap the argument to sizeof in parentheses for clarity.
* Remove `__BSD_VISIBLE` and `_XOPEN_SOURCE` #defines to mute warnings about
  incompatible snprintf definitions.

This fixes a number of warnings I've been seeing lately in my builds.

Sort makefile variables per style.Makefile(9) (`CFLAGS`/`CWARNFLAG.gcc`) and
bump `WARNS` to 3.

MFC after:	2 weeks
Reviewed by:	jtl
Approved by:	jtl (mentor)
MFC after:	1 month
Differential Revision:	https://reviews.freebsd.org/D19851
2019-04-14 00:06:49 +00:00

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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2018, Matthew Macy
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*
*/
#include <sys/types.h>
#include <sys/sysctl.h>
#include <assert.h>
#include <err.h>
#include <errno.h>
#include <limits.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <string>
#include <sysexits.h>
#include <pmc.h>
#include <pmcformat.h>
#include <pmclog.h>
using std::string;
static const char *typenames[] = {
"",
"{\"type\": \"closelog\"}\n",
"{\"type\": \"dropnotify\"}\n",
"{\"type\": \"initialize\"",
"",
"{\"type\": \"pmcallocate\"",
"{\"type\": \"pmcattach\"",
"{\"type\": \"pmcdetach\"",
"{\"type\": \"proccsw\"",
"{\"type\": \"procexec\"",
"{\"type\": \"procexit\"",
"{\"type\": \"procfork\"",
"{\"type\": \"sysexit\"",
"{\"type\": \"userdata\"",
"{\"type\": \"map_in\"",
"{\"type\": \"map_out\"",
"{\"type\": \"callchain\"",
"{\"type\": \"pmcallocatedyn\"",
"{\"type\": \"thr_create\"",
"{\"type\": \"thr_exit\"",
"{\"type\": \"proc_create\"",
};
static string
startentry(struct pmclog_ev *ev)
{
char eventbuf[128];
snprintf(eventbuf, sizeof(eventbuf), "%s, \"tsc\": \"%jd\"",
typenames[ev->pl_type], (uintmax_t)ev->pl_ts.tv_sec);
return (string(eventbuf));
}
static string
initialize_to_json(struct pmclog_ev *ev)
{
char eventbuf[256];
string startent;
startent = startentry(ev);
snprintf(eventbuf, sizeof(eventbuf),
"%s, \"version\": \"0x%08x\", \"arch\": \"0x%08x\", \"cpuid\": \"%s\", "
"\"tsc_freq\": \"%jd\", \"sec\": \"%jd\", \"nsec\": \"%jd\"}\n",
startent.c_str(), ev->pl_u.pl_i.pl_version, ev->pl_u.pl_i.pl_arch,
ev->pl_u.pl_i.pl_cpuid, (uintmax_t)ev->pl_u.pl_i.pl_tsc_freq,
(uintmax_t)ev->pl_u.pl_i.pl_ts.tv_sec, (uintmax_t)ev->pl_u.pl_i.pl_ts.tv_nsec);
return string(eventbuf);
}
static string
pmcallocate_to_json(struct pmclog_ev *ev)
{
char eventbuf[256];
string startent;
startent = startentry(ev);
snprintf(eventbuf, sizeof(eventbuf),
"%s, \"pmcid\": \"0x%08x\", \"event\": \"0x%08x\", \"flags\": \"0x%08x\", "
"\"rate\": \"%jd\"}\n",
startent.c_str(), ev->pl_u.pl_a.pl_pmcid, ev->pl_u.pl_a.pl_event,
ev->pl_u.pl_a.pl_flags, (intmax_t)ev->pl_u.pl_a.pl_rate);
return string(eventbuf);
}
static string
pmcattach_to_json(struct pmclog_ev *ev)
{
char eventbuf[2048];
string startent;
startent = startentry(ev);
snprintf(eventbuf, sizeof(eventbuf),
"%s, \"pmcid\": \"0x%08x\", \"pid\": \"%d\", \"pathname\": \"%s\"}\n",
startent.c_str(), ev->pl_u.pl_t.pl_pmcid, ev->pl_u.pl_t.pl_pid,
ev->pl_u.pl_t.pl_pathname);
return string(eventbuf);
}
static string
pmcdetach_to_json(struct pmclog_ev *ev)
{
char eventbuf[128];
string startent;
startent = startentry(ev);
snprintf(eventbuf, sizeof(eventbuf),
"%s, \"pmcid\": \"0x%08x\", \"pid\": \"%d\"}\n",
startent.c_str(), ev->pl_u.pl_d.pl_pmcid, ev->pl_u.pl_d.pl_pid);
return string(eventbuf);
}
static string
proccsw_to_json(struct pmclog_ev *ev)
{
char eventbuf[128];
string startent;
startent = startentry(ev);
snprintf(eventbuf, sizeof(eventbuf), "%s, \"pmcid\": \"0x%08x\", \"pid\": \"%d\" "
"\"tid\": \"%d\", \"value\": \"0x%016jx\"}\n",
startent.c_str(), ev->pl_u.pl_c.pl_pmcid, ev->pl_u.pl_c.pl_pid,
ev->pl_u.pl_c.pl_tid, (uintmax_t)ev->pl_u.pl_c.pl_value);
return string(eventbuf);
}
static string
procexec_to_json(struct pmclog_ev *ev)
{
char eventbuf[2048];
string startent;
startent = startentry(ev);
snprintf(eventbuf, sizeof(eventbuf),
"%s, \"pmcid\": \"0x%08x\", \"pid\": \"%d\", "
"\"start\": \"0x%016jx\", \"pathname\": \"%s\"}\n",
startent.c_str(), ev->pl_u.pl_x.pl_pmcid, ev->pl_u.pl_x.pl_pid,
(uintmax_t)ev->pl_u.pl_x.pl_entryaddr, ev->pl_u.pl_x.pl_pathname);
return string(eventbuf);
}
static string
procexit_to_json(struct pmclog_ev *ev)
{
char eventbuf[128];
string startent;
startent = startentry(ev);
snprintf(eventbuf, sizeof(eventbuf),
"%s, \"pmcid\": \"0x%08x\", \"pid\": \"%d\", "
"\"value\": \"0x%016jx\"}\n",
startent.c_str(), ev->pl_u.pl_e.pl_pmcid, ev->pl_u.pl_e.pl_pid,
(uintmax_t)ev->pl_u.pl_e.pl_value);
return string(eventbuf);
}
static string
procfork_to_json(struct pmclog_ev *ev)
{
char eventbuf[128];
string startent;
startent = startentry(ev);
snprintf(eventbuf, sizeof(eventbuf),
"%s, \"oldpid\": \"%d\", \"newpid\": \"%d\"}\n",
startent.c_str(), ev->pl_u.pl_f.pl_oldpid, ev->pl_u.pl_f.pl_newpid);
return string(eventbuf);
}
static string
sysexit_to_json(struct pmclog_ev *ev)
{
char eventbuf[128];
string startent;
startent = startentry(ev);
snprintf(eventbuf, sizeof(eventbuf), "%s, \"pid\": \"%d\"}\n",
startent.c_str(), ev->pl_u.pl_se.pl_pid);
return string(eventbuf);
}
static string
userdata_to_json(struct pmclog_ev *ev)
{
char eventbuf[128];
string startent;
startent = startentry(ev);
snprintf(eventbuf, sizeof(eventbuf), "%s, \"userdata\": \"0x%08x\"}\n",
startent.c_str(), ev->pl_u.pl_u.pl_userdata);
return string(eventbuf);
}
static string
map_in_to_json(struct pmclog_ev *ev)
{
char eventbuf[2048];
string startent;
startent = startentry(ev);
snprintf(eventbuf, sizeof(eventbuf), "%s, \"pid\": \"%d\", "
"\"start\": \"0x%016jx\", \"pathname\": \"%s\"}\n",
startent.c_str(), ev->pl_u.pl_mi.pl_pid,
(uintmax_t)ev->pl_u.pl_mi.pl_start, ev->pl_u.pl_mi.pl_pathname);
return string(eventbuf);
}
static string
map_out_to_json(struct pmclog_ev *ev)
{
char eventbuf[256];
string startent;
startent = startentry(ev);
snprintf(eventbuf, sizeof(eventbuf), "%s, \"pid\": \"%d\", "
"\"start\": \"0x%016jx\", \"end\": \"0x%016jx\"}\n",
startent.c_str(), ev->pl_u.pl_mi.pl_pid,
(uintmax_t)ev->pl_u.pl_mi.pl_start,
(uintmax_t)ev->pl_u.pl_mo.pl_end);
return string(eventbuf);
}
static string
callchain_to_json(struct pmclog_ev *ev)
{
char eventbuf[1024];
string result;
uint32_t i;
string startent;
startent = startentry(ev);
snprintf(eventbuf, sizeof(eventbuf),
"%s, \"pmcid\": \"0x%08x\", \"pid\": \"%d\", \"tid\": \"%d\", "
"\"cpuflags\": \"0x%08x\", \"cpuflags2\": \"0x%08x\", \"pc\": [ ",
startent.c_str(), ev->pl_u.pl_cc.pl_pmcid, ev->pl_u.pl_cc.pl_pid,
ev->pl_u.pl_cc.pl_tid, ev->pl_u.pl_cc.pl_cpuflags, ev->pl_u.pl_cc.pl_cpuflags2);
result = string(eventbuf);
for (i = 0; i < ev->pl_u.pl_cc.pl_npc - 1; i++) {
snprintf(eventbuf, sizeof(eventbuf), "\"0x%016jx\", ", (uintmax_t)ev->pl_u.pl_cc.pl_pc[i]);
result += string(eventbuf);
}
snprintf(eventbuf, sizeof(eventbuf), "\"0x%016jx\"]}\n", (uintmax_t)ev->pl_u.pl_cc.pl_pc[i]);
result += string(eventbuf);
return (result);
}
static string
pmcallocatedyn_to_json(struct pmclog_ev *ev)
{
char eventbuf[2048];
string startent;
startent = startentry(ev);
snprintf(eventbuf, sizeof(eventbuf),
"%s, \"pmcid\": \"0x%08x\", \"event\": \"%d\", \"flags\": \"0x%08x\", \"evname\": \"%s\"}\n",
startent.c_str(), ev->pl_u.pl_ad.pl_pmcid, ev->pl_u.pl_ad.pl_event,
ev->pl_u.pl_ad.pl_flags, ev->pl_u.pl_ad.pl_evname);
return string(eventbuf);
}
static string
proccreate_to_json(struct pmclog_ev *ev)
{
char eventbuf[2048];
string startent;
startent = startentry(ev);
snprintf(eventbuf, sizeof(eventbuf),
"%s, \"pid\": \"%d\", \"flags\": \"0x%08x\", \"pcomm\": \"%s\"}\n",
startent.c_str(), ev->pl_u.pl_pc.pl_pid,
ev->pl_u.pl_pc.pl_flags, ev->pl_u.pl_pc.pl_pcomm);
return string(eventbuf);
}
static string
threadcreate_to_json(struct pmclog_ev *ev)
{
char eventbuf[2048];
string startent;
startent = startentry(ev);
snprintf(eventbuf, sizeof(eventbuf),
"%s, \"tid\": \"%d\", \"pid\": \"%d\", \"flags\": \"0x%08x\", \"tdname\": \"%s\"}\n",
startent.c_str(), ev->pl_u.pl_tc.pl_tid, ev->pl_u.pl_tc.pl_pid,
ev->pl_u.pl_tc.pl_flags, ev->pl_u.pl_tc.pl_tdname);
return string(eventbuf);
}
static string
threadexit_to_json(struct pmclog_ev *ev)
{
char eventbuf[256];
string startent;
startent = startentry(ev);
snprintf(eventbuf, sizeof(eventbuf), "%s, \"tid\": \"%d\"}\n",
startent.c_str(), ev->pl_u.pl_te.pl_tid);
return string(eventbuf);
}
static string
stub_to_json(struct pmclog_ev *ev)
{
string startent;
startent = startentry(ev);
startent += string("}\n");
return startent;
}
typedef string (*jconv) (struct pmclog_ev*);
static jconv jsonconvert[] = {
NULL,
stub_to_json,
stub_to_json,
initialize_to_json,
NULL,
pmcallocate_to_json,
pmcattach_to_json,
pmcdetach_to_json,
proccsw_to_json,
procexec_to_json,
procexit_to_json,
procfork_to_json,
sysexit_to_json,
userdata_to_json,
map_in_to_json,
map_out_to_json,
callchain_to_json,
pmcallocatedyn_to_json,
threadcreate_to_json,
threadexit_to_json,
proccreate_to_json,
};
string
event_to_json(struct pmclog_ev *ev){
switch (ev->pl_type) {
case PMCLOG_TYPE_DROPNOTIFY:
case PMCLOG_TYPE_CLOSELOG:
case PMCLOG_TYPE_INITIALIZE:
case PMCLOG_TYPE_PMCALLOCATE:
case PMCLOG_TYPE_PMCATTACH:
case PMCLOG_TYPE_PMCDETACH:
case PMCLOG_TYPE_PROCCSW:
case PMCLOG_TYPE_PROCEXEC:
case PMCLOG_TYPE_PROCEXIT:
case PMCLOG_TYPE_PROCFORK:
case PMCLOG_TYPE_SYSEXIT:
case PMCLOG_TYPE_USERDATA:
case PMCLOG_TYPE_MAP_IN:
case PMCLOG_TYPE_MAP_OUT:
case PMCLOG_TYPE_CALLCHAIN:
case PMCLOG_TYPE_PMCALLOCATEDYN:
case PMCLOG_TYPE_THR_CREATE:
case PMCLOG_TYPE_THR_EXIT:
case PMCLOG_TYPE_PROC_CREATE:
return jsonconvert[ev->pl_type](ev);
default:
errx(EX_USAGE, "ERROR: unrecognized event type: %d\n", ev->pl_type);
}
}
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