1 /*****************************************************************************
2 * osdep.c: platform-specific code
3 *****************************************************************************
4 * Copyright (C) 2003-2021 x264 project
5 *
6 * Authors: Steven Walters <kemuri9@gmail.com>
7 * Laurent Aimar <fenrir@via.ecp.fr>
8 * Henrik Gramner <henrik@gramner.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
23 *
24 * This program is also available under a commercial proprietary license.
25 * For more information, contact us at licensing@x264.com.
26 *****************************************************************************/
27
28 #include "osdep.h"
29
30 #if SYS_WINDOWS
31 #include <sys/types.h>
32 #include <sys/timeb.h>
33 #else
34 #include <sys/time.h>
35 #endif
36 #include <time.h>
37
38 #if PTW32_STATIC_LIB
39 /* this is a global in pthread-win32 to indicate if it has been initialized or not */
40 extern int ptw32_processInitialized;
41 #endif
42
x264_mdate(void)43 int64_t x264_mdate( void )
44 {
45 #if SYS_WINDOWS
46 struct timeb tb;
47 ftime( &tb );
48 return ((int64_t)tb.time * 1000 + (int64_t)tb.millitm) * 1000;
49 #elif HAVE_CLOCK_GETTIME
50 struct timespec ts;
51 clock_gettime( CLOCK_MONOTONIC, &ts );
52 return (int64_t)ts.tv_sec * 1000000 + (int64_t)ts.tv_nsec / 1000;
53 #else
54 struct timeval tv_date;
55 gettimeofday( &tv_date, NULL );
56 return (int64_t)tv_date.tv_sec * 1000000 + (int64_t)tv_date.tv_usec;
57 #endif
58 }
59
60 #if HAVE_WIN32THREAD || PTW32_STATIC_LIB
61 /* state of the threading library being initialized */
62 static volatile LONG threading_is_init = 0;
63
threading_destroy(void)64 static void threading_destroy( void )
65 {
66 #if PTW32_STATIC_LIB
67 pthread_win32_thread_detach_np();
68 pthread_win32_process_detach_np();
69 #else
70 x264_win32_threading_destroy();
71 #endif
72 }
73
threading_init(void)74 static int threading_init( void )
75 {
76 #if PTW32_STATIC_LIB
77 /* if static pthread-win32 is already initialized, then do nothing */
78 if( ptw32_processInitialized )
79 return 0;
80 if( !pthread_win32_process_attach_np() )
81 return -1;
82 #else
83 if( x264_win32_threading_init() )
84 return -1;
85 #endif
86 /* register cleanup to run at process termination */
87 atexit( threading_destroy );
88 return 0;
89 }
90
x264_threading_init(void)91 int x264_threading_init( void )
92 {
93 LONG state;
94 while( (state = InterlockedCompareExchange( &threading_is_init, -1, 0 )) != 0 )
95 {
96 /* if already init, then do nothing */
97 if( state > 0 )
98 return 0;
99 }
100 if( threading_init() < 0 )
101 {
102 InterlockedExchange( &threading_is_init, 0 );
103 return -1;
104 }
105 InterlockedExchange( &threading_is_init, 1 );
106 return 0;
107 }
108 #endif
109