扩展了与进程策略设置相关的函数

Signed-off-by: caifuzhou <504631861@qq.com>

libc-test/src/functional/sched_setscheduler.c

@@ -9,18 +9,24 @@
 int main(int argc,char *argv[])
 {
     struct sched_param param;
-    int maxpri;
-
-    maxpri = sched_get_priority_max(SCHED_FIFO);
-    if(maxpri == -1) 
+    int maxpri,minpri;
+    int sched;
+    pid_t pid;
+    
+    sched = SCHED_FIFO;
+    pid = getpid();
+    maxpri = sched_get_priority_max(sched);
+    minpri = sched_get_priority_min(sched);
+    if(maxpri == -1 || minpri == -1) 
     {
-        perror("get priority failed");
+        perror("get maxpriority or minpriority failed");
         return -1;
     }
-    param.sched_priority = maxpri;
-    TEST(sched_setscheduler(getpid(), SCHED_FIFO, &param));
-    TEST(!(sched_getscheduler(getpid()) == SCHED_FIFO));
-    
+    param.sched_priority = 23;//取值范围:minpri~maxpri
+    TEST(sched_setscheduler(pid, sched, &param));
+    TEST(!(sched_getscheduler(pid) == sched));
+    TEST(sched_getparam(pid, &param));
+
     return 0;
 }
 

musl_src.gni

@@ -1838,7 +1838,10 @@ musl_src_porting_file = [
   "src/multibyte/wcsnrtombs.c",
   "src/network/inet_legacy.c",
   "src/passwd/getspnam_r.c",
+  "src/sched/sched_setparam.c",
+  "src/sched/sched_getparam.c",
   "src/sched/sched_setscheduler.c",
+  "src/sched/sched_getscheduler.c",
   "src/thread/arm/clone.s",
   "src/thread/arm/syscall_cp.s",
 ]

porting/linux/user/src/sched/sched_getparam.c

@@ -0,0 +1,20 @@
+#include <sched.h>
+#include <errno.h>
+#include "syscall.h"
+#include <string.h>
+
+int sched_getparam(pid_t pid, struct sched_param *param)
+{
+	int r;
+	if (!param) {
+		r = -EINVAL;
+		goto exit;
+	}
+	memset(param, 0, sizeof(struct sched_param));
+	r = __syscall(SYS_sched_getparam, pid , param);
+	if (r >= 0) {
+		r = 0;
+	}
+exit:
+	return __syscall_ret(r);
+}

porting/linux/user/src/sched/sched_getscheduler.c

@@ -0,0 +1,10 @@
+#include <sched.h>
+#include <errno.h>
+#include <string.h>
+#include "syscall.h"
+
+int sched_getscheduler(pid_t pid)
+{
+	int r = __syscall(SYS_sched_getscheduler, pid);
+	return  __syscall_ret(r);
+}

porting/linux/user/src/sched/sched_setparam.c

@@ -0,0 +1,16 @@
+#include <sched.h>
+#include <errno.h>
+#include <string.h>
+#include "syscall.h"
+
+int sched_setparam(pid_t pid, const struct sched_param *param)
+{
+	int r;
+	if (!param) {
+		r = -EINVAL;
+		goto exit;
+	}
+	r = __syscall(SYS_sched_setparam, pid, param);
+exit:
+	return __syscall_ret(r);
+}

porting/linux/user/src/sched/sched_setscheduler.c

@@ -10,11 +10,7 @@ int sched_setscheduler(pid_t pid, int sched, const struct sched_param *param)
 		r = -EINVAL;
 		goto exit;
 	}
-
-	r = __syscall(SYS_sched_setscheduler, pid , sched , param->sched_priority);
-;
+	r = __syscall(SYS_sched_setscheduler, pid , sched , param);
 exit:
-
-
 	return __syscall_ret(r);
 }