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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2018-2018. All Rights Reserved.
*
* 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.
*
* %CopyrightEnd%
*
* ----------------------------------------------------------------------
* Purpose : Debug functions for the socket and net NIF(s).
* ----------------------------------------------------------------------
*
*/
#include <stdarg.h>
#include <string.h>
#include <stdio.h>
#include <ctype.h>
#include <time.h>
#include <erl_nif.h>
#include "socket_dbg.h"
#define TSELF() enif_thread_self()
#define TNAME(__T__) enif_thread_name( __T__ )
#define TSNAME() TNAME(TSELF())
static FILE* dbgout = NULL;
#if defined(CLOCK_REALTIME)
static int realtime(struct timespec* tsP);
static int timespec2str(char *buf, unsigned int len, struct timespec *ts);
#endif
extern
void esock_dbg_init(char* filename)
{
if (filename != NULL) {
if (strcmp(filename, ESOCK_DBGOUT_DEFAULT) == 0) {
dbgout = stdout;
} else if (strcmp(filename, ESOCK_DBGOUT_UNIQUE) == 0) {
char template[] = "/tmp/esock-dbg-XXXXXX";
dbgout = fdopen(mkstemp(template), "w+");
} else {
dbgout = fopen(filename, "w+");
}
} else {
char template[] = "/tmp/esock-dbg-XXXXXX";
dbgout = fdopen(mkstemp(template), "w+");
}
}
/*
* Print a debug format string *with* both a timestamp and the
* the name of the *current* thread.
*/
extern
void esock_dbg_printf( const char* prefix, const char* format, ... )
{
va_list args;
char f[512 + sizeof(format)]; // This has to suffice...
#if defined(CLOCK_REALTIME)
char stamp[30];
struct timespec ts;
#endif
int res;
/*
* We should really include self in the printout,
* so we can se which process are executing the code.
* But then I must change the API....something for later.
*/
#if defined(CLOCK_REALTIME)
if (!realtime(&ts) &&
(timespec2str(stamp, sizeof(stamp), &ts) == 0)) {
res = enif_snprintf(f, sizeof(f), "%s [%s] [%s] %s",
prefix, stamp, TSNAME(), format);
} else {
res = enif_snprintf(f, sizeof(f), "%s [%s] %s",
prefix, TSNAME(), format);
}
#else
res = enif_snprintf(f, sizeof(f), "%s [%s] %s",
prefix, TSNAME(), format);
#endif
if (res > 0) {
va_start (args, format);
enif_vfprintf (dbgout, f, args);
va_end (args);
fflush(stdout);
}
return;
}
#if defined(CLOCK_REALTIME)
static
int realtime(struct timespec* tsP)
{
return clock_gettime(CLOCK_REALTIME, tsP);
}
/*
* Convert a timespec struct into a readable/printable string
*/
static
int timespec2str(char *buf, unsigned int len, struct timespec *ts)
{
int ret, buflen;
struct tm t;
tzset();
if (localtime_r(&(ts->tv_sec), &t) == NULL)
return 1;
ret = strftime(buf, len, "%F %T", &t);
if (ret == 0)
return 2;
len -= ret - 1;
buflen = strlen(buf);
ret = snprintf(&buf[buflen], len, ".%06ld", ts->tv_nsec/1000);
if (ret >= len)
return 3;
return 0;
}
#endif
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