/* $Id$ */
-/* gras/sysdep.h -- all system dependency */
+/* sysdep.c -- all system dependency */
/* no system header should be loaded out of this file so that we have only */
/* one file to check when porting to another OS */
-/* Authors: Martin Quinson */
-/* Copyright (C) 2004 the OURAGAN project. */
+/* Copyright (c) 2004 Martin Quinson. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
- under the terms of the license (GNU LGPL) which comes with this package. */
+ * under the terms of the license (GNU LGPL) which comes with this package. */
-#include "gras_private.h"
+#include "xbt/sysdep.h"
+#include "xbt/xbt_portability.h" /* private */
+#include "xbt/log.h"
+#include "portable.h"
-#include <stdlib.h>
-GRAS_LOG_NEW_DEFAULT_SUBCATEGORY(sysdep, gros, "System dependency");
+/** @brief like free
+ @hideinitializer */
+XBT_PUBLIC(void) xbt_free_f(void* p)
+{
+ free(p);
+}
-/****
- **** Memory management
- ****/
-void* gras_malloc (long int bytes) {
- return bytes == 0 ? NULL : (void*) malloc ((size_t) bytes);
-}
-void* gras_malloc0 (long int bytes) {
- return bytes == 0 ? NULL : (void*) calloc ((size_t) bytes, 1);
-}
+/* TSC (tick-level) timers are said to be unreliable on SMP hosts and thus
+ disabled in SDL source code */
-void* gras_realloc (void *memory, long int bytes) {
- if (bytes == 0) {
- gras_free(memory);
- return NULL;
- } else {
- return (void*) realloc (memory, (size_t) bytes);
- }
-}
-void gras_free (void *memory) {
- if (memory) {
- free (memory);
- }
+/* \defgroup XBT_sysdep All system dependency
+ * \brief This section describes many macros/functions that can serve as
+ * an OS abstraction.
+ */
+
+double xbt_os_time(void) {
+#ifdef HAVE_GETTIMEOFDAY
+ struct timeval tv;
+
+ gettimeofday(&tv, NULL);
+
+ return (double)(tv.tv_sec + tv.tv_usec / 1000000.0);
+#else
+ /* Poor resolution */
+ return (double)(time(NULL));
+#endif /* HAVE_GETTIMEOFDAY? */
}
-/****
- **** Misc
- ****/
+/*XBT_LOG_NEW_DEFAULT_SUBCATEGORY(sysdep, xbt, "System dependency");*/
-void gras_abort(void) {
- abort();
+
+struct s_xbt_os_timer {
+#ifdef HAVE_GETTIMEOFDAY
+ struct timeval start,stop;
+#else
+ unsigned long int start,stop;
+#endif
+};
+
+xbt_os_timer_t xbt_os_timer_new(void) {
+ return xbt_new0(struct s_xbt_os_timer,1);
+}
+void xbt_os_timer_free(xbt_os_timer_t timer) {
+ free (timer);
+}
+void xbt_os_timer_start(xbt_os_timer_t timer) {
+#ifdef HAVE_GETTIMEOFDAY
+ gettimeofday(&(timer->start), NULL);
+#else
+ timer->start = (unsigned long int)(time(NULL));
+#endif
}
+void xbt_os_timer_stop(xbt_os_timer_t timer) {
+#ifdef HAVE_GETTIMEOFDAY
+ gettimeofday(&(timer->stop), NULL);
+#else
+ timer->stop = (unsigned long int)(time(NULL));
+#endif
+}
+double xbt_os_timer_elapsed(xbt_os_timer_t timer) {
+#ifdef HAVE_GETTIMEOFDAY
+ return ((double)timer->stop.tv_sec) - ((double)timer->start.tv_sec) +
+ ((((double)timer->stop.tv_usec) - ((double)timer->start.tv_usec)) / 1000000.0);
+#else
+ return (double)timer->stop - (double)timer->start;
+#endif
+}
+
