mirror of
https://github.com/Unidata/netcdf-c.git
synced 2024-12-21 08:39:46 +08:00
adea80f376
re: Issue https://github.com/Unidata/netcdf-c/issues/2766 This attempt to programmatically dump stack never worked, so it is time to kill it off.
300 lines
6.7 KiB
C
300 lines
6.7 KiB
C
/*********************************************************************
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* Copyright 2018, UCAR/Unidata
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* See netcdf/COPYRIGHT file for copying and redistribution conditions.
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* $Header$
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*********************************************************************/
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#include "config.h"
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#ifdef _MSC_VER
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#include<io.h>
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#endif
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <string.h>
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#include <errno.h>
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#ifdef HAVE_FCNTL_H
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#include <fcntl.h>
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include "netcdf.h"
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#include "nclog.h"
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#define PREFIXLEN 8
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#define MAXTAGS 256
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#define NCTAGDFALT "Log";
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#define NC_MAX_FRAMES 1024
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static int nclogginginitialized = 0;
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static struct NCLOGGLOBAL {
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int loglevel;
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int tracelevel;
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FILE* nclogstream;
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int depth;
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struct Frame {
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const char* fcn;
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int level;
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int depth;
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} frames[NC_MAX_FRAMES];
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} nclog_global = {0,-1,NULL};
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static const char* nctagset[] = {"OFF","ERR","WARN","NOTE","DEBUG",NULL};
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/* Forward */
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static const char* nctagname(int tag);
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static int nctagforname(const char* tag);
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/*!\defgroup NClog NClog Management
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@{*/
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/*!\internal
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*/
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void
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ncloginit(void)
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{
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const char* envv = NULL;
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if(nclogginginitialized)
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return;
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nclogginginitialized = 1;
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memset(&nclog_global,0,sizeof(nclog_global));
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ncsetloglevel(NCLOGOFF);
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nclog_global.tracelevel = -1;
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nclog_global.nclogstream = stderr;
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/* Use environment variables to preset nclogging state*/
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envv = getenv(NCENVLOGGING);
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if(envv != NULL) {
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int level = nctagforname(envv);
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if(level < 0) ncsetloglevel(level);
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}
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envv = getenv(NCENVTRACING);
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if(envv != NULL) nctracelevel(atoi(envv));
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}
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/*!
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Enable logging messages to a given level. Set to NCLOGOFF to disable
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all messages, NCLOGERR for errors only, NCLOGWARN for warnings and
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errors, and so on
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\param[in] level Messages above this level are ignored
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\return The previous value of the logging flag.
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*/
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int
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ncsetloglevel(int level)
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{
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int was;
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if(!nclogginginitialized) ncloginit();
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was = nclog_global.loglevel;
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if(level >= 0 && level <= NCLOGDEBUG)
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nclog_global.loglevel = level;
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if(nclog_global.nclogstream == NULL) nclogopen(NULL);
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return was;
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}
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int
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nclogopen(FILE* stream)
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{
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if(!nclogginginitialized) ncloginit();
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if(stream == NULL) stream = stderr;
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nclog_global.nclogstream = stream;
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return 1;
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}
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/*!
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Send logging messages. This uses a variable
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number of arguments and operates like the stdio
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printf function.
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\param[in] tag Indicate the kind of this log message.
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\param[in] format Format specification as with printf.
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*/
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void
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nclog(int tag, const char* fmt, ...)
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{
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if(fmt != NULL) {
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va_list args;
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va_start(args, fmt);
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ncvlog(tag,fmt,args);
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va_end(args);
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}
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}
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void
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ncvlog(int level, const char* fmt, va_list ap)
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{
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const char* prefix;
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if(!nclogginginitialized) ncloginit();
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if(nclog_global.loglevel < level || nclog_global.nclogstream == NULL) {
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return;
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}
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prefix = nctagname(level);
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fprintf(nclog_global.nclogstream,"%s: ",prefix);
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if(fmt != NULL) {
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vfprintf(nclog_global.nclogstream, fmt, ap);
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}
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fprintf(nclog_global.nclogstream, "\n" );
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fflush(nclog_global.nclogstream);
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}
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void
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nclogtext(int tag, const char* text)
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{
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nclogtextn(tag,text,strlen(text));
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}
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/*!
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Send arbitrarily long text as a logging message.
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Each line will be sent using nclog with the specified tag.
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\param[in] tag Indicate the kind of this log message.
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\param[in] text Arbitrary text to send as a logging message.
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*/
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void
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nclogtextn(int level, const char* text, size_t count)
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{
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if(nclog_global.loglevel > level || nclog_global.nclogstream == NULL)
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return;
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fwrite(text,1,count,nclog_global.nclogstream);
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fflush(nclog_global.nclogstream);
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}
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static const char*
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nctagname(int tag)
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{
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if(tag < NCLOGOFF || tag >= NCLOGDEBUG)
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return "unknown";
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return nctagset[tag];
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}
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static int
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nctagforname(const char* tag)
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{
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int level;
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const char** p = NULL;
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for(level=0,p=nctagset;*p;p++,level++) {
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if(strcasecmp(*p,tag)==0) return level;
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}
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return -1;
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}
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/*!
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Send trace messages.
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\param[in] level Indicate the level of trace
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\param[in] format Format specification as with printf.
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*/
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int
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nctracelevel(int level)
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{
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int oldlevel;
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if(!nclogginginitialized) ncloginit();
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oldlevel = nclog_global.tracelevel;
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if(level < 0) {
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nclog_global.tracelevel = level;
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} else { /*(level >= 0)*/
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nclog_global.tracelevel = level;
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nclogopen(NULL); /* use stderr */
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}
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return oldlevel;
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}
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void
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nctrace(int level, const char* fcn, const char* fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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ncvtrace(level,fcn,fmt,args);
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va_end(args);
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}
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void
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nctracemore(int level, const char* fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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ncvtrace(level,NULL,fmt,args);
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va_end(args);
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}
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void
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ncvtrace(int level, const char* fcn, const char* fmt, va_list ap)
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{
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struct Frame* frame;
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if(!nclogginginitialized) ncloginit();
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if(fcn != NULL) {
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frame = &nclog_global.frames[nclog_global.depth];
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frame->fcn = fcn;
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frame->level = level;
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frame->depth = nclog_global.depth;
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}
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if(level <= nclog_global.tracelevel) {
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if(fcn != NULL)
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fprintf(nclog_global.nclogstream,"%s: (%d): %s:","Enter",level,fcn);
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if(fmt != NULL)
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vfprintf(nclog_global.nclogstream, fmt, ap);
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fprintf(nclog_global.nclogstream, "\n" );
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fflush(nclog_global.nclogstream);
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}
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if(fcn != NULL) nclog_global.depth++;
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}
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int
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ncuntrace(const char* fcn, int err, const char* fmt, ...)
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{
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va_list args;
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struct Frame* frame;
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va_start(args, fmt);
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if(nclog_global.depth == 0) {
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fprintf(nclog_global.nclogstream,"*** Unmatched untrace: %s: depth==0\n",fcn);
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goto done;
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}
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nclog_global.depth--;
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frame = &nclog_global.frames[nclog_global.depth];
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if(frame->depth != nclog_global.depth || strcmp(frame->fcn,fcn) != 0) {
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fprintf(nclog_global.nclogstream,"*** Unmatched untrace: fcn=%s expected=%s\n",frame->fcn,fcn);
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goto done;
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}
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if(frame->level <= nclog_global.tracelevel) {
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fprintf(nclog_global.nclogstream,"%s: (%d): %s: ","Exit",frame->level,frame->fcn);
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if(err)
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fprintf(nclog_global.nclogstream,"err=(%d) '%s':",err,nc_strerror(err));
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if(fmt != NULL)
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vfprintf(nclog_global.nclogstream, fmt, args);
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fprintf(nclog_global.nclogstream, "\n" );
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fflush(nclog_global.nclogstream);
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}
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done:
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va_end(args);
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if(err != 0)
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return ncbreakpoint(err);
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else
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return err;
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}
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int
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ncthrow(int err,const char* file,int line)
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{
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if(err == 0) return err;
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return ncbreakpoint(err);
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}
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int
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ncbreakpoint(int err)
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{
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return err;
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}
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/**@}*/
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