diff options
Diffstat (limited to 'sched.c')
| -rw-r--r-- | sched.c | 30 |
1 files changed, 28 insertions, 2 deletions
@@ -128,6 +128,22 @@ int pthread_getschedparam(pthread_t thread, int *policy, return 0; } + +/* + * On Windows98, THREAD_PRIORITY_LOWEST is (-2) and + * THREAD_PRIORITY_HIGHEST is 2, and everything works just fine. + * + * On WinCE 3.0, it so happen that THREAD_PRIORITY_LOWEST is 5 + * and THREAD_PRIORITY_HIGHEST is 1 (yes, I know, it is funny: + * highest priority use smaller numbers) and the following happens: + * + * sched_get_priority_min() returns 5 + * sched_get_priority_max() returns 1 + */ + +#define sched_Max(a,b) ((a)<(b)?(b):(a)) +#define sched_Min(a,b) ((a)>(b)?(b):(a)) + int sched_get_priority_max(int policy) { if (policy < SCHED_MIN || policy > SCHED_MAX) @@ -135,8 +151,13 @@ int sched_get_priority_max(int policy) return EINVAL; } +#if (THREAD_PRIORITY_LOWEST > THREAD_PRIORITY_NORMAL) + /* WinCE? */ + return sched_Max(THREAD_PRIORITY_IDLE, THREAD_PRIORITY_TIME_CRITICAL); +#else /* This is independent of scheduling policy in Win32. */ - return THREAD_PRIORITY_HIGHEST; + return sched_Max(THREAD_PRIORITY_LOWEST, THREAD_PRIORITY_HIGHEST); +#endif } int sched_get_priority_min(int policy) @@ -146,8 +167,13 @@ int sched_get_priority_min(int policy) return EINVAL; } +#if (THREAD_PRIORITY_LOWEST > THREAD_PRIORITY_NORMAL) + /* WinCE? */ + return sched_Min(THREAD_PRIORITY_IDLE, THREAD_PRIORITY_TIME_CRITICAL); +#else /* This is independent of scheduling policy in Win32. */ - return THREAD_PRIORITY_LOWEST; + return sched_Min(THREAD_PRIORITY_LOWEST, THREAD_PRIORITY_HIGHEST); +#endif } int sched_yield(void) |