3 /* Copyright (c) 2006, 2007, 2008, 2009, 2010. The SimGrid Team.
4 * All rights reserved. */
6 /* This program is free software; you can redistribute it and/or modify it
7 * under the terms of the license (GNU LGPL) which comes with this package. */
10 #include "simgrid_config.h" /*HAVE_MMAP _XBT_WIN32 */
11 #include "gras_config.h" /* MMALLOC_WANT_OVERRIDE_LEGACY */
12 #include "time.h" /* to seed the random generator */
14 #include "xbt/sysdep.h"
16 #include "xbt/dynar.h"
17 #include "xbt/config.h"
19 #include "xbt/module.h" /* this module */
21 #include "xbt_modinter.h" /* prototype of other module's init/exit in XBT */
23 XBT_LOG_NEW_CATEGORY(xbt, "All XBT categories (simgrid toolbox)");
24 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(module, xbt, "module handling");
26 char *xbt_binary_name = NULL; /* Mandatory to retrieve neat backtraces */
27 int xbt_initialized = 0;
29 int _surf_do_model_check = 0; /* this variable is used accros the libraries, and must be declared in XBT so that it's also defined in GRAS (not only in libsimgrid) */
30 int _surf_do_mc_checkpoint = 0; /* this variable is used accros the libraries, and must be declared in XBT so that it's also defined in GRAS (not only in libsimgrid) */
32 /* Declare xbt_preinit and xbt_postexit as constructor/destructor of the library.
33 * This is crude and rather compiler-specific, unfortunately.
35 static void xbt_preinit(void) _XBT_GNUC_CONSTRUCTOR(200);
36 static void xbt_postexit(void) _XBT_GNUC_DESTRUCTOR(200);
39 # undef _XBT_NEED_INIT_PRAGMA
42 #ifdef _XBT_NEED_INIT_PRAGMA
43 #pragma init (xbt_preinit)
44 #pragma fini (xbt_postexit)
51 /* Dummy prototype to make gcc happy */
52 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason,
55 /* Should not be necessary but for some reason,
56 * DllMain is called twice at attachment and
58 static int xbt_dll_process_is_attached = 0;
60 /* see also http://msdn.microsoft.com/en-us/library/ms682583%28VS.85%29.aspx */
61 /* and http://www.microsoft.com/whdc/driver/kernel/DLL_bestprac.mspx */
62 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason,
65 if (fdwReason == DLL_PROCESS_ATTACH
66 && xbt_dll_process_is_attached == 0) {
67 xbt_dll_process_is_attached = 1;
69 } else if (fdwReason == DLL_PROCESS_DETACH
70 && xbt_dll_process_is_attached == 1) {
71 xbt_dll_process_is_attached = 0;
80 static void xbt_preinit(void)
82 #ifdef MMALLOC_WANT_OVERRIDE_LEGACY
87 xbt_backtrace_preinit();
88 xbt_os_thread_mod_preinit();
91 xbt_datadesc_preinit();
95 static void xbt_postexit(void)
98 xbt_datadesc_postexit();
100 xbt_backtrace_postexit();
106 xbt_os_thread_mod_postexit();
108 free(xbt_binary_name);
109 #ifdef MMALLOC_WANT_OVERRIDE_LEGACY
114 /** @brief Initialize the xbt mechanisms. */
115 void xbt_init(int *argc, char **argv)
117 // FIXME it would be nice to assert that this function is called only once. But each gras process do call it...
120 if (xbt_initialized > 1)
123 xbt_binary_name = xbt_strdup(argv[0]);
124 srand((unsigned int) time(NULL));
126 xbt_log_init(argc, argv);
129 /** @brief Finalize the xbt mechanisms. */
132 XBT_WARN("This function is deprecated, you shouldn't use it");
136 /* these two functions belong to xbt/sysdep.h, which have no corresponding .c file */
137 /** @brief like free, but you can be sure that it is a function */
138 XBT_PUBLIC(void) xbt_free_f(void *p)
143 /** @brief should be given a pointer to pointer, and frees the second one */
144 XBT_PUBLIC(void) xbt_free_ref(void *d)