X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/48fb61a024cd614fd1544b95c360022fc470b505..4a201b7ceece70d2bc461ac48c8b746a36d07243:/include/xbt/sysdep.h

diff --git a/include/xbt/sysdep.h b/include/xbt/sysdep.h
index 4bd3cea284..64eb19101a 100644
--- a/include/xbt/sysdep.h
+++ b/include/xbt/sysdep.h
@@ -1,4 +1,3 @@
-/* $Id$ */
 /*  xbt/sysdep.h -- 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                            */
@@ -12,56 +11,96 @@
 #define _XBT_SYSDEP_H
 
 #include <string.h>
-#include <stdlib.h> 
-   
+#include <stdlib.h>
+#include <stdarg.h>             /* va_list */
+
 #include "xbt/misc.h"
-#include "xbt/error.h"
-  
-BEGIN_DECL()
+#include "xbt/asserts.h"
+
+SG_BEGIN_DECL()
+
+/* They live in asserts.h, but need to be declared before this module.
+   double declaration to cut dependency cycle */
+/**
+ * @addtogroup XBT_error
+ *
+ * @{
+ */
+XBT_PUBLIC(void) xbt_abort(void) _XBT_GNUC_NORETURN;
+XBT_PUBLIC(void) xbt_die(const char *msg) _XBT_GNUC_NORETURN;
+/** @} */
+
+/* these ones live in str.h, but redeclare them here so that we do
+   not need to load the whole str.h and its heavy dependencies */
+#ifndef __USE_GNU               /* do not redeclare existing headers */
+XBT_PUBLIC(int) asprintf(char **ptr, const char *fmt,   /*args */
+                         ...) _XBT_GNUC_PRINTF(2, 3);
+XBT_PUBLIC(int) vasprintf(char **ptr, const char *fmt, va_list ap);
+#endif
+XBT_PUBLIC(char *) bprintf(const char *fmt, ...) _XBT_GNUC_PRINTF(1, 2);
+
 /** @addtogroup XBT_syscall
+ *  @brief Malloc and associated functions, killing the program on error (with \ref XBT_ex)
+ *
  *  @{
  */
 
-#ifdef __GNUC__
-/** @brief like strdup, but xbt_die() on error */
-static inline char *xbt_strdup(const char *s) {
+#if defined(__GNUC__) || defined(DOXYGEN)
+/** @brief Like strdup, but xbt_die() on error */
+static inline __attribute__((always_inline)) char *xbt_strdup(const char *s)
+{
   char *res = NULL;
   if (s) {
-    res=strdup(s);
-    if (!res) 
-      xbt_die("memory allocation error");
-  } 
+    res = strdup(s);
+    if (!res)
+      xbt_die("memory allocation error (strdup returned NULL)");
+  }
   return res;
 }
-/** @brief like malloc, but xbt_die() on error 
+
+XBT_PUBLIC(void) xbt_backtrace_display_current(void);
+
+/** @brief Like malloc, but xbt_die() on error
     @hideinitializer */
-static inline void *xbt_malloc(int n){
-  void *res=malloc(n);
+static inline __attribute__((always_inline)) void *xbt_malloc(unsigned int n)
+{
+  void *res;
+/*  if (n==0) {
+     xbt_backtrace_display_current();
+     xbt_die("malloc(0) is not portable");
+  }*/
+
+  res = malloc(n);
   if (!res)
-     xbt_die("Memory allocation failed");
+    xbt_die(bprintf("Memory allocation of %d bytes failed", n));
   return res;
 }
 
 /** @brief like malloc, but xbt_die() on error and memset data to 0
     @hideinitializer */
-static inline void *xbt_malloc0(int n) {
-  void *res=calloc(n,1);
+static inline __attribute__((always_inline)) void *xbt_malloc0(unsigned int n)
+{
+  void *res;
+  //if (n==0) xbt_die("calloc(0) is not portable");
+  res = calloc(n, 1);
   if (!res)
-     xbt_die("Memory callocation failed");
+    xbt_die(bprintf("Memory callocation of %d bytes failed", n));
   return res;
 }
-  
-/** @brief like realloc, but xbt_die() on error 
+
+/** @brief like realloc, but xbt_die() on error
     @hideinitializer */
-static inline void *xbt_realloc(void*p,int s){
-  void *res=res;
+static inline __attribute__((always_inline)) void *xbt_realloc(void *p, unsigned int s)
+{
+  void *res = res;
+  //if (s==0) xbt_die("realloc(0) is not portable");
   if (s) {
     if (p) {
-      res=realloc(p,s);
-      if (!res) 
-	xbt_die("memory allocation error");
+      res = realloc(p, s);
+      if (!res)
+        xbt_die(bprintf("memory (re)allocation of %d bytes failed", s));
     } else {
-      res=xbt_malloc(s);
+      res = xbt_malloc(s);
     }
   } else {
     if (p) {
@@ -79,9 +118,14 @@ static inline void *xbt_realloc(void*p,int s){
 
 /** @brief like free
     @hideinitializer */
-#define xbt_free free /*nothing specific to do here. A poor valgrind replacement?*/
+#define xbt_free free           /*nothing specific to do here. A poor valgrind replacement? */
 /*#define xbt_free_fct free * replacement with the guareenty of being a function  FIXME:KILLME*/
-   
+
+/** @brief like free, but you can be sure that it is a function  */
+XBT_PUBLIC(void) xbt_free_f(void *p);
+/** @brief should be given a pointer to pointer, and frees the second one */
+XBT_PUBLIC(void) xbt_free_ref(void *d);
+
 /** @brief like calloc, but xbt_die() on error and don't memset to 0
     @hideinitializer */
 #define xbt_new(type, count)  ((type*)xbt_malloc (sizeof (type) * (count)))
@@ -89,15 +133,8 @@ static inline void *xbt_realloc(void*p,int s){
     @hideinitializer */
 #define xbt_new0(type, count) ((type*)xbt_malloc0 (sizeof (type) * (count)))
 
-/** @} */  
-
-/** @brief get time in seconds 
-
-  * gives  the  number  of  seconds since the Epoch (00:00:00 UTC, January 1, 1970).
-  * Most users should use gras_os_time and should not use this function unless 
-    they really know what they are doing. */
-double xbt_os_time(void);
+/** @} */
 
-END_DECL()
 
+SG_END_DECL()
 #endif /* _XBT_SYSDEP_H */