initial commit of public abc

src/misc/util/utilFile.c

@@ -0,0 +1,170 @@
+/**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>
+
+#include "abc_global.h"
+
+ABC_NAMESPACE_IMPL_START
+
+////////////////////////////////////////////////////////////////////////
+///                        DECLARATIONS                              ///
+////////////////////////////////////////////////////////////////////////
+
+#if defined(_MSC_VER)
+
+#include <Windows.h>
+#include <process.h>
+#include <io.h>
+
+////////////////////////////////////////////////////////////////////////
+///                     FUNCTION DEFINITIONS                         ///
+////////////////////////////////////////////////////////////////////////
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+static ABC_UINT64_T realTimeAbs()  // -- absolute time in nano-seconds
+{
+    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));
+}
+
+#endif
+
+
+
+// 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).
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+int tmpFile(const char* prefix, const char* suffix, char** out_name)
+{
+#if !defined(_MSC_VER)
+    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(fd);
+        if (fd == -1){
+            free(*out_name);
+            *out_name = NULL;
+        }
+    }
+    return fd;
+
+#else
+    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;
+#endif
+}
+
+
+//mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
+
+
+/**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;
+}
+*/
+
+
+
+////////////////////////////////////////////////////////////////////////
+///                       END OF FILE                                ///
+////////////////////////////////////////////////////////////////////////
+
+
+ABC_NAMESPACE_IMPL_END
+