diff options
Diffstat (limited to 'pjlib/include/pj/compat/rand.h')
| -rw-r--r-- | pjlib/include/pj/compat/rand.h | 155 |
1 files changed, 88 insertions, 67 deletions
diff --git a/pjlib/include/pj/compat/rand.h b/pjlib/include/pj/compat/rand.h index b65bf103..af4d915d 100644 --- a/pjlib/include/pj/compat/rand.h +++ b/pjlib/include/pj/compat/rand.h @@ -1,67 +1,88 @@ -/* $Id$ - * - */ -/* $Log: /pjproject-0.3/pjlib/include/pj/compat/rand.h $ - * - * 3 10/14/05 12:26a Bennylp - * Finished error code framework, some fixes in ioqueue, etc. Pretty - * major. - * - * 2 9/21/05 1:39p Bennylp - * Periodic checkin for backup. - * - * 1 9/17/05 10:36a Bennylp - * Created. - * - */ -#ifndef __PJ_COMPAT_RAND_H__ -#define __PJ_COMPAT_RAND_H__ - -/** - * @file rand.h - * @brief Provides platform_rand() and platform_srand() functions. - */ - -#if defined(PJ_HAS_STDLIB_H) && PJ_HAS_STDLIB_H != 0 - /* - * Use stdlib based rand() and srand(). - */ -# include <stdlib.h> -# define platform_srand srand -# if defined(RAND_MAX) && RAND_MAX <= 0xFFFF - /* - * When rand() is only 16 bit strong, double the strength - * by calling it twice! - */ - PJ_INLINE(int) platform_rand(void) - { - return ((rand() & 0xFFFF) << 16) | (rand() & 0xFFFF); - } -# else -# define platform_rand rand -# endif - -#elif defined(PJ_LINUX_KERNEL) && PJ_LINUX_KERNEL != 0 - /* - * Linux kernel mode random number generator. - */ -# include <linux/random.h> -# define platform_srand(seed) - - PJ_INLINE(int) platform_rand(void) - { - int value; - get_random_bytes((void*)&value, sizeof(value)); - return value; - } - -#else -# warning "platform_rand() is not implemented" -# define platform_rand() 1 -# define platform_srand(seed) - -#endif - - -#endif /* __PJ_COMPAT_RAND_H__ */ - +/* $Id$
+ *
+ */
+/*
+ * PJLIB - PJ Foundation Library
+ * (C)2003-2005 Benny Prijono <bennylp@bulukucing.org>
+ *
+ * Author:
+ * Benny Prijono <bennylp@bulukucing.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+/* $Log: /pjproject-0.3/pjlib/include/pj/compat/rand.h $
+ *
+ * 3 10/14/05 12:26a Bennylp
+ * Finished error code framework, some fixes in ioqueue, etc. Pretty
+ * major.
+ *
+ * 2 9/21/05 1:39p Bennylp
+ * Periodic checkin for backup.
+ *
+ * 1 9/17/05 10:36a Bennylp
+ * Created.
+ *
+ */
+#ifndef __PJ_COMPAT_RAND_H__
+#define __PJ_COMPAT_RAND_H__
+
+/**
+ * @file rand.h
+ * @brief Provides platform_rand() and platform_srand() functions.
+ */
+
+#if defined(PJ_HAS_STDLIB_H) && PJ_HAS_STDLIB_H != 0
+ /*
+ * Use stdlib based rand() and srand().
+ */
+# include <stdlib.h>
+# define platform_srand srand
+# if defined(RAND_MAX) && RAND_MAX <= 0xFFFF
+ /*
+ * When rand() is only 16 bit strong, double the strength
+ * by calling it twice!
+ */
+ PJ_INLINE(int) platform_rand(void)
+ {
+ return ((rand() & 0xFFFF) << 16) | (rand() & 0xFFFF);
+ }
+# else
+# define platform_rand rand
+# endif
+
+#elif defined(PJ_LINUX_KERNEL) && PJ_LINUX_KERNEL != 0
+ /*
+ * Linux kernel mode random number generator.
+ */
+# include <linux/random.h>
+# define platform_srand(seed)
+
+ PJ_INLINE(int) platform_rand(void)
+ {
+ int value;
+ get_random_bytes((void*)&value, sizeof(value));
+ return value;
+ }
+
+#else
+# warning "platform_rand() is not implemented"
+# define platform_rand() 1
+# define platform_srand(seed)
+
+#endif
+
+
+#endif /* __PJ_COMPAT_RAND_H__ */
+
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