Partial fix for ticket #96: Return SQLITE_MISUSE from sqlite_exec() if called

from a child process with an active transaction that was started in the parent. (CVS 675)

FossilOrigin-Name: 72a609ec6492e7d740b6e6184fa14a5e6b04a5dc

src/os.c

@@ -579,6 +579,19 @@ int sqliteOsFileSize(OsFile *id, int *pSize){
 #endif
 }
 
+/*
+** Return the process ID for the current process.  This
+** only works under Unix.  Under windows, a constant is returned.
+*/
+int sqliteOsProcessId(void){
+#if OS_UNIX
+  return getpid();
+#endif
+#if OS_WIN
+  return 1;
+#endif
+}
+
 
 /*
 ** Change the status of the lock on the file "id" to be a readlock.