| /* |
| Copyright (c) 2011-2013 mingw-w64 project |
| |
| Permission is hereby granted, free of charge, to any person obtaining a |
| copy of this software and associated documentation files (the "Software"), |
| to deal in the Software without restriction, including without limitation |
| the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| and/or sell copies of the Software, and to permit persons to whom the |
| Software is furnished to do so, subject to the following conditions: |
| |
| The above copyright notice and this permission notice shall be included in |
| all copies or substantial portions of the Software. |
| |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| DEALINGS IN THE SOFTWARE. |
| */ |
| |
| #include <windows.h> |
| #include <stdio.h> |
| #include "pthread.h" |
| #include "thread.h" |
| |
| #include "misc.h" |
| |
| int sched_get_priority_min(int pol) |
| { |
| if (pol < SCHED_MIN || pol > SCHED_MAX) { |
| errno = EINVAL; |
| return -1; |
| } |
| |
| return THREAD_PRIORITY_IDLE; |
| } |
| |
| int sched_get_priority_max(int pol) |
| { |
| if (pol < SCHED_MIN || pol > SCHED_MAX) { |
| errno = EINVAL; |
| return -1; |
| } |
| |
| return THREAD_PRIORITY_TIME_CRITICAL; |
| } |
| |
| int pthread_attr_setschedparam(pthread_attr_t *attr, const struct sched_param *p) |
| { |
| int r = 0; |
| |
| if (attr == NULL || p == NULL) { |
| return EINVAL; |
| } |
| memcpy(&attr->param, p, sizeof (*p)); |
| return r; |
| } |
| |
| int pthread_attr_getschedparam(const pthread_attr_t *attr, struct sched_param *p) |
| { |
| int r = 0; |
| |
| if (attr == NULL || p == NULL) { |
| return EINVAL; |
| } |
| memcpy(p, &attr->param, sizeof (*p)); |
| return r; |
| } |
| |
| int pthread_attr_setschedpolicy (pthread_attr_t *attr, int pol) |
| { |
| if (!attr || pol < SCHED_MIN || pol > SCHED_MAX) |
| return EINVAL; |
| if (pol != SCHED_OTHER) |
| return ENOTSUP; |
| return 0; |
| } |
| |
| int pthread_attr_getschedpolicy (pthread_attr_t *attr, int *pol) |
| { |
| if (!attr || !pol) |
| return EINVAL; |
| *pol = SCHED_OTHER; |
| return 0; |
| } |
| |
| static int pthread_check(pthread_t t) |
| { |
| struct _pthread_v *pv; |
| DWORD dwFlags; |
| if (!t) |
| return ESRCH; |
| pv = __pth_gpointer_locked (t); |
| if (!(pv->h) || pv->h == INVALID_HANDLE_VALUE) |
| { |
| if (pv->ended == 0) |
| return 0; |
| return ESRCH; |
| } |
| else if ((!GetHandleInformation(pv->h, &dwFlags) && pv->ended)) |
| return ESRCH; |
| return 0; |
| } |
| |
| int pthread_getschedparam(pthread_t t, int *pol, struct sched_param *p) |
| { |
| int r; |
| //if (!t) |
| // t = pthread_self(); |
| |
| if ((r = pthread_check(t)) != 0) |
| { |
| return r; |
| } |
| |
| if (!p || !pol) |
| { |
| return EINVAL; |
| } |
| *pol = __pth_gpointer_locked (t)->sched_pol; |
| p->sched_priority = __pth_gpointer_locked (t)->sched.sched_priority; |
| |
| return 0; |
| } |
| |
| int pthread_setschedparam(pthread_t t, int pol, const struct sched_param *p) |
| { |
| struct _pthread_v *pv; |
| int r, pr = 0; |
| //if (!t.p) t = pthread_self(); |
| |
| if ((r = pthread_check(t)) != 0) |
| return r; |
| |
| if (pol < SCHED_MIN || pol > SCHED_MAX || p == NULL) |
| return EINVAL; |
| if (pol != SCHED_OTHER) |
| return ENOTSUP; |
| pr = p->sched_priority; |
| if (pr < sched_get_priority_min(pol) || pr > sched_get_priority_max(pol)) |
| return EINVAL; |
| |
| /* See msdn: there are actually 7 priorities: |
| THREAD_PRIORITY_IDLE - -15 |
| THREAD_PRIORITY_LOWEST -2 |
| THREAD_PRIORITY_BELOW_NORMAL -1 |
| THREAD_PRIORITY_NORMAL 0 |
| THREAD_PRIORITY_ABOVE_NORMAL 1 |
| THREAD_PRIORITY_HIGHEST 2 |
| THREAD_PRIORITY_TIME_CRITICAL 15 |
| */ |
| if (pr <= THREAD_PRIORITY_IDLE) { |
| pr = THREAD_PRIORITY_IDLE; |
| } else if (pr <= THREAD_PRIORITY_LOWEST) { |
| pr = THREAD_PRIORITY_LOWEST; |
| } else if (pr >= THREAD_PRIORITY_TIME_CRITICAL) { |
| pr = THREAD_PRIORITY_TIME_CRITICAL; |
| } else if (pr >= THREAD_PRIORITY_HIGHEST) { |
| pr = THREAD_PRIORITY_HIGHEST; |
| } |
| pv = __pth_gpointer_locked (t); |
| if (SetThreadPriority(pv->h, pr)) { |
| pv->sched_pol = pol; |
| pv->sched.sched_priority = p->sched_priority; |
| } else |
| r = EINVAL; |
| return r; |
| } |
| |
| int sched_getscheduler(pid_t pid) |
| { |
| if (pid != 0) |
| { |
| HANDLE h = NULL; |
| int selfPid = (int) GetCurrentProcessId (); |
| |
| if (pid != (pid_t) selfPid && (h = OpenProcess (PROCESS_QUERY_INFORMATION, 0, (DWORD) pid)) == NULL) |
| { |
| errno = (GetLastError () == (0xFF & ERROR_ACCESS_DENIED)) ? EPERM : ESRCH; |
| return -1; |
| } |
| if (h) |
| CloseHandle (h); |
| } |
| return SCHED_OTHER; |
| } |
| |
| int sched_setscheduler(pid_t pid, int pol, const struct sched_param *param) |
| { |
| if (!param) |
| { |
| errno = EINVAL; |
| return -1; |
| } |
| if (pid != 0) |
| { |
| HANDLE h = NULL; |
| int selfPid = (int) GetCurrentProcessId (); |
| |
| if (pid != (pid_t) selfPid && (h = OpenProcess (PROCESS_SET_INFORMATION, 0, (DWORD) pid)) == NULL) |
| { |
| errno = (GetLastError () == (0xFF & ERROR_ACCESS_DENIED)) ? EPERM : ESRCH; |
| return -1; |
| } |
| if (h) |
| CloseHandle (h); |
| } |
| |
| if (pol != SCHED_OTHER) |
| { |
| errno = ENOSYS; |
| return -1; |
| } |
| return SCHED_OTHER; |
| } |
| |
| int sched_yield(void) |
| { |
| Sleep(0); |
| return 0; |
| } |