1 files changed, 106 insertions, 0 deletions
diff --git a/libs/utils/ported.cpp b/libs/utils/ported.cpp
new file mode 100644
index 0000000..656e46f
--- /dev/null
+++ b/libs/utils/ported.cpp
@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2005 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+//
+// Ports of standard functions that don't exist on a specific platform.
+//
+// Note these are NOT in the "android" namespace.
+//
+#include <utils/ported.h>
+
+#if defined(NEED_GETTIMEOFDAY) || defined(NEED_USLEEP)
+# include <sys/time.h>
+# include <windows.h>
+#endif
+
+
+#if defined(NEED_GETTIMEOFDAY)
+/*
+ * Replacement gettimeofday() for Windows environments (primarily MinGW).
+ *
+ * Ignores "tz".
+ */
+int gettimeofday(struct timeval* ptv, struct timezone* tz)
+{
+    long long nsTime;   // time in 100ns units since Jan 1 1601
+    FILETIME ft;
+
+    if (tz != NULL) {
+        // oh well
+    }
+
+    ::GetSystemTimeAsFileTime(&ft);
+    nsTime = (long long) ft.dwHighDateTime << 32 |
+             (long long) ft.dwLowDateTime;
+    // convert to time in usec since Jan 1 1970
+    ptv->tv_usec = (long) ((nsTime / 10LL) % 1000000LL);
+    ptv->tv_sec = (long) ((nsTime - 116444736000000000LL) / 10000000LL);
+
+    return 0;
+}
+#endif
+
+#if defined(NEED_USLEEP)
+//
+// Replacement usleep for Windows environments (primarily MinGW).
+//
+void usleep(unsigned long usec)
+{
+    // Win32 API function Sleep() takes milliseconds
+    ::Sleep((usec + 500) / 1000);
+}
+#endif
+
+#if 0 //defined(NEED_PIPE)
+//
+// Replacement pipe() command for MinGW
+//
+// The _O_NOINHERIT flag sets bInheritHandle to FALSE in the
+// SecurityAttributes argument to CreatePipe().  This means the handles
+// aren't inherited when a new process is created.  The examples I've seen
+// use it, possibly because there's a lot of junk going on behind the
+// scenes.  (I'm assuming "process" and "thread" are different here, so
+// we should be okay spinning up a thread.)  The recommended practice is
+// to dup() the descriptor you want the child to have.
+//
+// It appears that unnamed pipes can't do non-blocking ("overlapped") I/O.
+// You can't use select() either, since that only works on sockets.  The
+// Windows API calls that are useful here all operate on a HANDLE, not
+// an integer file descriptor, and I don't think you can get there from
+// here.  The "named pipe" stuff is insane.
+//
+int pipe(int filedes[2])
+{
+    return _pipe(filedes, 0, _O_BINARY | _O_NOINHERIT);
+}
+#endif
+
+#if defined(NEED_SETENV)
+/*
+ * MinGW lacks these.  For now, just stub them out so the code compiles.
+ */
+int setenv(const char* name, const char* value, int overwrite)
+{
+    return 0;
+}
+void unsetenv(const char* name)
+{
+}
+char* getenv(const char* name)
+{
+    return NULL;
+}
+#endif