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/**CFile****************************************************************
FileName [utilFile.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Temporary file utilities.]
Synopsis [Temporary file utilities.]
Author [Niklas Een]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - September 29, 2010.]
Revision [$Id: utilFile.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <sys/stat.h>
// Handle legacy macros
#if !defined(S_IREAD)
#if defined(S_IRUSR)
#define S_IREAD S_IRUSR
#else
#error S_IREAD is undefined
#endif
#endif
#if !defined(S_IWRITE)
#if defined(S_IWUSR)
#define S_IWRITE S_IWUSR
#else
#error S_IWRITE is undefined
#endif
#endif
#if defined(_MSC_VER) || defined(__MINGW32__)
#include <windows.h>
#include <process.h>
#include <io.h>
#else
#include <unistd.h>
#endif
#include "abc_global.h"
ABC_NAMESPACE_IMPL_START
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
static ABC_UINT64_T realTimeAbs() // -- absolute time in nano-seconds
{
#if defined(_MSC_VER)
LARGE_INTEGER f, t;
double realTime_freq;
int ok;
ok = QueryPerformanceFrequency(&f); assert(ok);
realTime_freq = 1.0 / (__int64)(((ABC_UINT64_T)f.LowPart) | ((ABC_UINT64_T)f.HighPart << 32));
ok = QueryPerformanceCounter(&t); assert(ok);
return (ABC_UINT64_T)(__int64)(((__int64)(((ABC_UINT64_T)t.LowPart | ((ABC_UINT64_T)t.HighPart << 32))) * realTime_freq * 1000000000));
#else
return 0;
#endif
}
/**Function*************************************************************
Synopsis [Opens a temporary file.]
Description [Opens a temporary file with given prefix and returns file
descriptor (-1 on failure) and a string containing the name of the file
(to be freed by caller).]
SideEffects []
SeeAlso []
***********************************************************************/
int tmpFile(const char* prefix, const char* suffix, char** out_name)
{
#if defined(_MSC_VER) || defined(__MINGW32__)
int i, fd;
*out_name = (char*)malloc(strlen(prefix) + strlen(suffix) + 27);
for (i = 0; i < 10; i++){
sprintf(*out_name, "%s%I64X%d%s", prefix, realTimeAbs(), _getpid(), suffix);
fd = _open(*out_name, O_CREAT | O_EXCL | O_BINARY | O_RDWR, _S_IREAD | _S_IWRITE);
if (fd == -1){
free(*out_name);
*out_name = NULL;
}
return fd;
}
assert(0); // -- could not open temporary file
return 0;
#elif defined(__wasm)
static int seq = 0; // no risk of collision since we're in a sandbox
int fd;
*out_name = (char*)malloc(strlen(prefix) + strlen(suffix) + 9);
sprintf(*out_name, "%s%08d%s", prefix, seq++, suffix);
fd = open(*out_name, O_CREAT | O_EXCL | O_RDWR, S_IREAD | S_IWRITE);
if (fd == -1){
free(*out_name);
*out_name = NULL;
}
return fd;
#else
int fd;
*out_name = (char*)malloc(strlen(prefix) + strlen(suffix) + 7);
assert(*out_name != NULL);
sprintf(*out_name, "%sXXXXXX", prefix);
fd = mkstemp(*out_name);
if (fd == -1){
free(*out_name);
*out_name = NULL;
}else{
// Kludge:
close(fd);
unlink(*out_name);
strcat(*out_name, suffix);
fd = open(*out_name, O_CREAT | O_EXCL | O_RDWR, S_IREAD | S_IWRITE);
if (fd == -1){
free(*out_name);
*out_name = NULL;
}
}
return fd;
#endif
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
/*
int main(int argc, char** argv)
{
char* tmp_filename;
int fd = tmpFile("__abctmp_", &tmp_filename);
FILE* out = fdopen(fd, "wb");
fprintf(out, "This file contains important information.\n");
fclose(out);
printf("Created: %s\n", tmp_filename);
free(tmp_filename);
return 0;
}
*/
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
char* vnsprintf(const char* format, va_list args)
{
unsigned n;
char* ret;
va_list args_copy;
static FILE* dummy_file = NULL;
if (!dummy_file)
{
#if !defined(_MSC_VER) && !defined(__MINGW32)
dummy_file = fopen("/dev/null", "wb");
#else
dummy_file = fopen("NUL", "wb");
#endif
}
#if defined(__va_copy)
__va_copy(args_copy, args);
#else
#if defined(va_copy)
va_copy(args_copy, args);
#else
args_copy = args;
#endif
#endif
n = vfprintf(dummy_file, format, args);
ret = ABC_ALLOC( char, n + 1 );
ret[n] = (char)255;
args = args_copy;
vsprintf(ret, format, args);
#if !defined(__va_copy) && defined(va_copy)
va_end(args_copy);
#endif
assert(ret[n] == 0);
return ret;
}
char* nsprintf(const char* format, ...)
{
char* ret;
va_list args;
va_start(args, format);
ret = vnsprintf(format, args);
va_end(args);
return ret;
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
ABC_NAMESPACE_IMPL_END
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