3 /* Copyright (c) 2006-2017. The SimGrid Team. All rights reserved. */
5 /* This program is free software; you can redistribute it and/or modify it
6 * under the terms of the license (GNU LGPL) which comes with this package. */
8 #define XBT_LOG_LOCALLY_DEFINE_XBT_CHANNEL /* MSVC don't want it to be declared extern in headers and local here */
10 #include "simgrid_config.h"
11 #include "xbt/config.h"
12 #include "xbt/dynar.h"
14 #include "xbt/log.hpp"
16 #include "xbt/sysdep.h"
19 #include "xbt/module.h" /* this module */
21 #include "src/xbt_modinter.h" /* prototype of other module's init/exit in XBT */
23 #include "simgrid/sg_config.h"
25 #include "src/internal_config.h"
28 # include <csignal> /* To silence MSVC on abort() */
34 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(module, xbt, "module handling");
36 XBT_LOG_NEW_CATEGORY(smpi, "All SMPI categories"); /* lives here even if that's a bit odd to solve linking issues: this is used in xbt_log_file_appender to detect whether SMPI is used (and thus whether we should unbench the writing to disk) */
38 char *xbt_binary_name = NULL; /* Name of the system process containing us (mandatory to retrieve neat backtraces) */
39 xbt_dynar_t xbt_cmdline = NULL; /* all we got in argv */
41 int xbt_initialized = 0;
42 int _sg_do_clean_atexit = 1;
47 /* Declare xbt_preinit and xbt_postexit as constructor/destructor of the library.
48 * This is crude and rather compiler-specific, unfortunately.
50 static void xbt_preinit() _XBT_GNUC_CONSTRUCTOR(200);
51 static void xbt_postexit();
57 /* Should not be necessary but for some reason, DllMain is called twice at attachment and at detachment.*/
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 static BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
64 if (fdwReason == DLL_PROCESS_ATTACH
65 && xbt_dll_process_is_attached == 0) {
66 xbt_dll_process_is_attached = 1;
68 } else if (fdwReason == DLL_PROCESS_DETACH
69 && xbt_dll_process_is_attached == 1) {
70 xbt_dll_process_is_attached = 0;
78 static void xbt_preinit()
80 unsigned int seed = 2147483647;
84 xbt_pagesize = si.dwPageSize;
86 xbt_pagesize = sysconf(_SC_PAGESIZE);
88 # error Cannot get page size.
91 xbt_pagebits = log2(xbt_pagesize);
93 #ifdef _TWO_DIGIT_EXPONENT
94 /* Even printf behaves differently on Windows... */
95 _set_output_format(_TWO_DIGIT_EXPONENT);
98 xbt_os_thread_mod_preinit();
105 atexit(xbt_postexit);
108 static void xbt_postexit()
110 if (not _sg_do_clean_atexit)
114 xbt_os_thread_mod_postexit();
115 xbt_dynar_free(&xbt_cmdline);
122 /** @brief Initialize the xbt mechanisms. */
123 void xbt_init(int *argc, char **argv)
125 simgrid::xbt::installExceptionHandler();
128 if (xbt_initialized > 1) {
129 XBT_DEBUG("XBT has been initialized %d times.", xbt_initialized);
133 xbt_binary_name = argv[0];
134 xbt_cmdline = xbt_dynar_new(sizeof(char*), NULL);
135 for (int i = 0; i < *argc; i++)
136 xbt_dynar_push(xbt_cmdline,&(argv[i]));
138 xbt_log_init(argc, argv);
141 /* these two functions belong to xbt/sysdep.h, which have no corresponding .c file */
142 /** @brief like xbt_free, but you can be sure that it is a function */
143 void xbt_free_f(void *p)
148 /** @brief should be given a pointer to pointer, and frees the second one */
149 void xbt_free_ref(void *d)
151 xbt_free(*(void**)d);
154 /** @brief Kill the program in silence */
158 /* Call __gcov_flush on abort when compiling with coverage options. */
159 extern void __gcov_flush();
163 /* We said *in silence*. We don't want to see the error message printed by Microsoft's implementation of abort(). */
165 signal(SIGABRT, SIG_DFL);