3 /* Copyright (c) 2006-2014. 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. */
9 #define XBT_LOG_LOCALLY_DEFINE_XBT_CHANNEL /* MSVC don't want it to be declared extern in headers and local here */
13 #include "simgrid_config.h"
14 #include "xbt/sysdep.h"
16 #include "xbt/log.hpp"
17 #include "xbt/dynar.h"
18 #include "xbt/config.h"
20 #include "xbt/module.h" /* this module */
22 #include "src/xbt_modinter.h" /* prototype of other module's init/exit in XBT */
24 #include "simgrid/sg_config.h"
26 #include "src/internal_config.h"
29 #include <signal.h> /* To silence MSVC on abort() */
35 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(module, xbt, "module handling");
37 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) */
39 char *xbt_binary_name = NULL; /* Name of the system process containing us (mandatory to retrieve neat backtraces) */
40 xbt_dynar_t xbt_cmdline = NULL; /* all we got in argv */
42 int xbt_initialized = 0;
43 int _sg_do_clean_atexit = 1;
48 /* Declare xbt_preinit and xbt_postexit as constructor/destructor of the library.
49 * This is crude and rather compiler-specific, unfortunately.
51 static void xbt_preinit(void) _XBT_GNUC_CONSTRUCTOR(200);
52 static void xbt_postexit(void);
58 /* Should not be necessary but for some reason, DllMain is called twice at attachment and at detachment.*/
59 static int xbt_dll_process_is_attached = 0;
61 /* see also http://msdn.microsoft.com/en-us/library/ms682583%28VS.85%29.aspx */
62 /* and http://www.microsoft.com/whdc/driver/kernel/DLL_bestprac.mspx */
63 static BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
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;
79 static void xbt_preinit(void) {
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_backtrace_preinit();
99 xbt_os_thread_mod_preinit();
107 atexit(xbt_postexit);
110 static void xbt_postexit(void)
112 if(!_sg_do_clean_atexit) return;
114 xbt_backtrace_postexit();
117 xbt_os_thread_mod_postexit();
118 xbt_dynar_free(&xbt_cmdline);
120 free(xbt_binary_name);
126 /** @brief Initialize the xbt mechanisms. */
127 void xbt_init(int *argc, char **argv)
129 simgrid::xbt::installExceptionHandler();
131 if (xbt_initialized++) {
132 XBT_DEBUG("XBT was initialized %d times.", xbt_initialized);
136 xbt_binary_name = xbt_strdup(argv[0]);
137 xbt_cmdline = xbt_dynar_new(sizeof(char*),NULL);
138 for (int i=0;i<*argc;i++)
139 xbt_dynar_push(xbt_cmdline,&(argv[i]));
141 xbt_log_init(argc, argv);
144 /* these two functions belong to xbt/sysdep.h, which have no corresponding .c file */
145 /** @brief like free, but you can be sure that it is a function */
146 void xbt_free_f(void *p)
151 /** @brief should be given a pointer to pointer, and frees the second one */
152 void xbt_free_ref(void *d)
157 /** @brief Kill the program in silence */
161 /* Call __gcov_flush on abort when compiling with coverage options. */
162 extern void __gcov_flush(void);
166 /* It was said *in silence*. We don't want to see the error message printed
167 * by the Microsoft's implementation of abort(). */
169 signal(SIGABRT, SIG_DFL);