Addresses #1531 portability layer changes required for porting utils

git-svn-id: file:///svn/toku/tokudb@10480 c7de825b-a66e-492c-adef-691d508d4ae1

windows/getopt.c

 #include <unistd.h>
 
 char *optarg;
+int optind;
 
 static const char *match(char c, const char *optstring) {
     int i;
@@ -16,6 +17,7 @@ int getopt(int argc, char * const argv[], const char *optstring) {
     const char *theopt;
     if (lastargc == 0) {
         lastargc = 1;
+        optind = 1;
     }
     optarg = 0;
     if (lastargc >= argc) {
@@ -41,6 +43,7 @@ int getopt(int argc, char * const argv[], const char *optstring) {
         } else
             optarg = argv[lastargc++];
     }
+    optind = lastargc;
     return theopt[0];
 }
 

windows/getopt.h

+#ifndef _TOKUWIN_GETOPT_H
+#define _TOKUWIN_GETOPT_H
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+int
+getopt(int argc, char *const argv[], const char *optstring);
+
+extern char *optarg;
+extern int  optind;
+
+#if defined(__cplusplus)
+};
+#endif
+
+#endif
+

windows/random.c

@@ -7,13 +7,27 @@
 #include <toku_stdlib.h>
 #include <windows.h>
 
+static int used_srand = 0;
+
 long int
 random(void) {
     u_int32_t r;
+    if (used_srand) {
+        //rand is a relatively poor number generator, but can be seeded
+        //rand generates 15 bits.  We need 3 calls to generate 31 bits.
+        u_int32_t r1 = rand() & ((1<<15)-1);
+        u_int32_t r2 = rand() & ((1<<15)-1);;
+        u_int32_t r3 = rand() & 0x1;
+        r = r1 | (r2<<15) | (r3<<30);
+    }
+    else {
+        //rand_s is a good number generator, but cannot be seeded (for
+        //repeatability).
         errno_t r_error = rand_s(&r);
         assert(r_error==0);
         //Should return 0 to 2**31-1 instead of 2**32-1
         r >>= 1;
+    }
     return r;
 }
 
@@ -21,6 +35,7 @@ random(void) {
 //reimplement random.
 void
 srandom(unsigned int seed) {
-    seed = seed;
+    srand(seed);
+    used_srand = 1;
 }
 

windows/unistd.h

@@ -8,6 +8,7 @@ extern "C" {
 #include <io.h>
 #include <stdio.h>
 #include <stdint.h>
+#include <getopt.h>
 
 int fsync(int fildes);
 
@@ -26,11 +27,6 @@ sleep(unsigned int);
 int
 usleep(unsigned int);
 
-int
-getopt(int argc, char *const argv[], const char *optstring);
-
-extern char *optarg;
-
 #if defined(__cplusplus)
 };
 #endif