X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=ncurses%2Ftinfo%2Flib_data.c;h=e84209d4022cfe7ff3f70da51775b394dcfc5443;hp=d7f3b59a36e32c9535a797b371f48bbcd4b526b4;hb=2782cd7cf38dc9cfaa9d90b7e66792dbc7537b08;hpb=8144a95f5729b46a1ad4f4c3c4ba29800304e4c0

diff --git a/ncurses/tinfo/lib_data.c b/ncurses/tinfo/lib_data.c
index d7f3b59a..e84209d4 100644
--- a/ncurses/tinfo/lib_data.c
+++ b/ncurses/tinfo/lib_data.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2005,2007 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2007,2008 Free Software Foundation, Inc.              *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -41,7 +41,7 @@
 
 #include <curses.priv.h>
 
-MODULE_ID("$Id: lib_data.c,v 1.35 2007/12/29 20:29:27 tom Exp $")
+MODULE_ID("$Id: lib_data.c,v 1.52 2008/08/23 22:16:15 tom Exp $")
 
 /*
  * OS/2's native linker complains if we don't initialize public data when
@@ -109,7 +109,7 @@ NCURSES_EXPORT_VAR(SCREEN *) SP = NULL; /* Some linkers require initialized data
 #define CHARS_0s { '\0' }
 
 #define TGETENT_0 { 0L, FALSE, NULL, NULL, NULL }
-#define TGETENT_0s { TGETENT_0, TGETENT_0, TGETENT_0, TGETENT_0 } 
+#define TGETENT_0s { TGETENT_0, TGETENT_0, TGETENT_0, TGETENT_0 }
 
 NCURSES_EXPORT_VAR(NCURSES_GLOBALS) _nc_globals = {
     0,				/* have_sigwinch */
@@ -131,6 +131,8 @@ NCURSES_EXPORT_VAR(NCURSES_GLOBALS) _nc_globals = {
     NULL,			/* first_name */
     NULL,			/* keyname_table */
 
+    0,				/* slk_format */
+
     NULL,			/* safeprint_buf */
     0,				/* safeprint_used */
 
@@ -138,6 +140,8 @@ NCURSES_EXPORT_VAR(NCURSES_GLOBALS) _nc_globals = {
     0,				/* tgetent_index */
     0,				/* tgetent_sequence */
 
+    0,				/* _nc_windowlist */
+
 #if USE_HOME_TERMINFO
     NULL,			/* home_terminfo */
 #endif
@@ -164,26 +168,20 @@ NCURSES_EXPORT_VAR(NCURSES_GLOBALS) _nc_globals = {
     NULL,			/* tracedmp_buf */
     0,				/* tracedmp_used */
 
-    CHARS_0s,			/* tracemse_buf */
-
     NULL,			/* tracetry_buf */
     0,				/* tracetry_used */
 
-#ifndef USE_TERMLIB
     { CHARS_0s, CHARS_0s },	/* traceatr_color_buf */
     0,				/* traceatr_color_sel */
     -1,				/* traceatr_color_last */
-#endif /* USE_TERMLIB */
 
 #endif /* TRACE */
 #ifdef USE_PTHREADS
-    PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP,	/* mutex_set_SP */
-    PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP,	/* mutex_use_screen */
-    PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP,	/* mutex_use_window */
-    PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP,	/* mutex_windowlist */
+    PTHREAD_MUTEX_INITIALIZER,	/* mutex_curses */
     PTHREAD_MUTEX_INITIALIZER,	/* mutex_tst_tracef */
     PTHREAD_MUTEX_INITIALIZER,	/* mutex_tracef */
     0,				/* nested_tracef */
+    0,				/* use_pthreads */
 #endif
 };
 
@@ -220,10 +218,14 @@ NCURSES_EXPORT_VAR(NCURSES_PRESCREEN) _nc_prescreen = {
 	NUM_VARS_0s,		/* static_vars */
     },
     NULL,			/* saved_tty */
+#if NCURSES_NO_PADDING
+    FALSE,			/* flag to set if padding disabled  */
+#endif
 #if BROKEN_LINKER || USE_REENTRANT
     NULL,			/* real_acs_map */
     0,				/* LINES */
     0,				/* COLS */
+    0,				/* cur_term */
 #ifdef TRACE
     0L,				/* _outchars */
     NULL,			/* _tputs_trace */
@@ -231,3 +233,100 @@ NCURSES_EXPORT_VAR(NCURSES_PRESCREEN) _nc_prescreen = {
 #endif
 };
 /* *INDENT-ON* */
+
+/******************************************************************************/
+#ifdef USE_PTHREADS
+static void
+init_global_mutexes(void)
+{
+    static bool initialized = FALSE;
+
+    if (!initialized) {
+	initialized = TRUE;
+	_nc_mutex_init(&_nc_globals.mutex_curses);
+	_nc_mutex_init(&_nc_globals.mutex_tst_tracef);
+	_nc_mutex_init(&_nc_globals.mutex_tracef);
+    }
+}
+
+NCURSES_EXPORT(void)
+_nc_init_pthreads(void)
+{
+    if (_nc_use_pthreads)
+	return;
+# if USE_WEAK_SYMBOLS
+    if ((pthread_mutex_init) == 0)
+	return;
+    if ((pthread_mutex_lock) == 0)
+	return;
+    if ((pthread_mutex_unlock) == 0)
+	return;
+    if ((pthread_mutex_trylock) == 0)
+	return;
+    if ((pthread_mutexattr_settype) == 0)
+	return;
+# endif
+    _nc_use_pthreads = 1;
+    init_global_mutexes();
+}
+
+/*
+ * Use recursive mutexes if we have them - they're part of Unix98.
+ * For the cases where we do not, _nc_mutex_trylock() is used to avoid a
+ * deadlock, at the expense of memory leaks and unexpected failures that
+ * may not be handled by typical clients.
+ *
+ * FIXME - need configure check for PTHREAD_MUTEX_RECURSIVE, define it to
+ * PTHREAD_MUTEX_NORMAL if not supported.
+ */
+NCURSES_EXPORT(void)
+_nc_mutex_init(pthread_mutex_t * obj)
+{
+    pthread_mutexattr_t recattr;
+
+    if (_nc_use_pthreads) {
+	pthread_mutexattr_init(&recattr);
+	pthread_mutexattr_settype(&recattr, PTHREAD_MUTEX_RECURSIVE);
+	pthread_mutex_init(obj, &recattr);
+    }
+}
+
+NCURSES_EXPORT(int)
+_nc_mutex_lock(pthread_mutex_t * obj)
+{
+    if (_nc_use_pthreads == 0)
+	return 0;
+    return pthread_mutex_lock(obj);
+}
+
+NCURSES_EXPORT(int)
+_nc_mutex_trylock(pthread_mutex_t * obj)
+{
+    if (_nc_use_pthreads == 0)
+	return 0;
+    return pthread_mutex_trylock(obj);
+}
+
+NCURSES_EXPORT(int)
+_nc_mutex_unlock(pthread_mutex_t * obj)
+{
+    if (_nc_use_pthreads == 0)
+	return 0;
+    return pthread_mutex_unlock(obj);
+}
+
+#if USE_WEAK_SYMBOLS
+/*
+ * NB: sigprocmask(2) is global but pthread_sigmask(3p)
+ * only for the calling thread.
+ */
+NCURSES_EXPORT(int)
+_nc_sigprocmask(int how, const sigset_t * newmask, sigset_t * oldmask)
+{
+    if ((pthread_sigmask))
+	return pthread_sigmask(how, newmask, oldmask);
+    else
+	return sigprocmask(how, newmask, oldmask);
+}
+#endif
+#endif /* USE_PTHREADS */