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Diffstat (limited to '')
-rw-r--r-- | libraries/eina/src/lib/eina_sched.c | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/libraries/eina/src/lib/eina_sched.c b/libraries/eina/src/lib/eina_sched.c new file mode 100644 index 0000000..8c7f7fe --- /dev/null +++ b/libraries/eina/src/lib/eina_sched.c | |||
@@ -0,0 +1,94 @@ | |||
1 | /* EINA - EFL data type library | ||
2 | * Copyright (C) 2010 ProFUSION embedded systems | ||
3 | * | ||
4 | * This library is free software; you can redistribute it and/or | ||
5 | * modify it under the terms of the GNU Lesser General Public | ||
6 | * License as published by the Free Software Foundation; either | ||
7 | * version 2.1 of the License, or (at your option) any later version. | ||
8 | * | ||
9 | * This library is distributed in the hope that it will be useful, | ||
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
12 | * Lesser General Public License for more details. | ||
13 | * | ||
14 | * You should have received a copy of the GNU Lesser General Public | ||
15 | * License along with this library; | ||
16 | * if not, see <http://www.gnu.org/licenses/>. | ||
17 | */ | ||
18 | |||
19 | #ifdef HAVE_CONFIG_H | ||
20 | # include "config.h" | ||
21 | #endif | ||
22 | |||
23 | #ifdef EFL_HAVE_POSIX_THREADS | ||
24 | # include <pthread.h> | ||
25 | # ifdef __linux__ | ||
26 | # include <sched.h> | ||
27 | # include <sys/time.h> | ||
28 | # include <sys/resource.h> | ||
29 | # include <errno.h> | ||
30 | # endif | ||
31 | #endif | ||
32 | |||
33 | #ifdef EFL_HAVE_WIN32_THREADS | ||
34 | # ifndef WIN32_LEAN_AND_MEAN | ||
35 | # define WIN32_LEAN_AND_MEAN | ||
36 | # endif | ||
37 | # include <windows.h> | ||
38 | # undef WIN32_LEAN_AND_MEAN | ||
39 | #endif | ||
40 | |||
41 | #include "eina_sched.h" | ||
42 | #include "eina_log.h" | ||
43 | |||
44 | #define RTNICENESS 5 | ||
45 | #define NICENESS 5 | ||
46 | |||
47 | EAPI void | ||
48 | eina_sched_prio_drop(void) | ||
49 | { | ||
50 | #ifdef EFL_HAVE_POSIX_THREADS | ||
51 | struct sched_param param; | ||
52 | int pol, prio, ret; | ||
53 | pthread_t pthread_id; | ||
54 | |||
55 | pthread_id = pthread_self(); | ||
56 | ret = pthread_getschedparam(pthread_id, &pol, ¶m); | ||
57 | if (ret) | ||
58 | { | ||
59 | EINA_LOG_ERR("Unable to query sched parameters"); | ||
60 | return; | ||
61 | } | ||
62 | |||
63 | if (EINA_UNLIKELY(pol == SCHED_RR || pol == SCHED_FIFO)) | ||
64 | { | ||
65 | prio = sched_get_priority_max(pol); | ||
66 | param.sched_priority += RTNICENESS; | ||
67 | if (prio > 0 && param.sched_priority > prio) | ||
68 | param.sched_priority = prio; | ||
69 | |||
70 | pthread_setschedparam(pthread_id, pol, ¶m); | ||
71 | } | ||
72 | # ifdef __linux__ | ||
73 | else | ||
74 | { | ||
75 | errno = 0; | ||
76 | prio = getpriority(PRIO_PROCESS, 0); | ||
77 | if (errno == 0) | ||
78 | { | ||
79 | prio += NICENESS; | ||
80 | if (prio > 19) | ||
81 | prio = 19; | ||
82 | |||
83 | setpriority(PRIO_PROCESS, 0, prio); | ||
84 | } | ||
85 | } | ||
86 | # endif | ||
87 | #elif defined EFL_HAVE_WIN32_THREADS | ||
88 | if (!SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_BELOW_NORMAL)) | ||
89 | EINA_LOG_ERR("Can not set thread priority"); | ||
90 | #else | ||
91 | EINA_LOG_ERR("Eina does not have support for threads enabled" | ||
92 | "or it doesn't support setting scheduler priorities"); | ||
93 | #endif | ||
94 | } | ||