libc/msic:Implement get_nprocs API

Summary:
 1.Remove the macro definition of getnproc in sysinfo
 2.New get_nprocs_conf and get_nprocs interfaces, return CONFIG_SMP_NCPUS, return 1 when not defined

Signed-off-by: chenrun1 <chenrun1@xiaomi.com>

include/sys/sysinfo.h

@@ -33,14 +33,6 @@
 
 #define SI_LOAD_SHIFT 16
 
-#ifdef CONFIG_SMP_NCPUS
-#define get_nprocs()      CONFIG_SMP_NCPUS
-#define get_nprocs_conf() CONFIG_SMP_NCPUS
-#else
-#define get_nprocs()      1
-#define get_nprocs_conf() 1
-#endif
-
 /****************************************************************************
  * Type Definitions
  ****************************************************************************/
@@ -76,6 +68,8 @@ extern "C"
 #endif
 
 int sysinfo(FAR struct sysinfo *info);
+int get_nprocs_conf(void);
+int get_nprocs(void);
 
 #undef EXTERN
 #if defined(__cplusplus)

libs/libc/misc/CMakeLists.txt

@@ -42,7 +42,8 @@ list(
   lib_openat.c
   lib_mkdirat.c
   lib_utimensat.c
-  lib_memoryregion.c)
+  lib_memoryregion.c
+  lib_getnprocs.c)
 
 # Support for platforms that do not have long long types
 

libs/libc/misc/Make.defs

@@ -25,7 +25,7 @@ CSRCS += lib_xorshift128.c lib_tea_encrypt.c lib_tea_decrypt.c
 CSRCS += lib_cxx_initialize.c lib_impure.c lib_memfd.c lib_mutex.c
 CSRCS += lib_fchmodat.c lib_fstatat.c lib_getfullpath.c lib_openat.c
 CSRCS += lib_mkdirat.c lib_utimensat.c lib_mallopt.c lib_memoryregion.c
-CSRCS += lib_idr.c
+CSRCS += lib_idr.c lib_getnprocs.c
 
 # Support for platforms that do not have long long types
 

libs/libc/misc/lib_getnprocs.c

@@ -0,0 +1,86 @@
+/****************************************************************************
+ * libs/libc/misc/lib_getnprocs.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <sys/sysinfo.h>
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: get_nprocs_conf
+ *
+ * Description:
+ *   Retrieve the number of configured processors in the system.
+ *   The get_nprocs_conf() function returns the number of processors (CPUs)
+ *   configured in the system, regardless of whether they are currently
+ *   enabled or available. This function is useful for determining the
+ *   processor configuration in multiprocessor systems.
+ *
+ * Input Parameters:
+ *   None
+ *
+ * Returned Value:
+ *   On success, the number of configured processors is returned.
+ *   If the system does not define a processor configuration, it returns 1.
+ *
+ ****************************************************************************/
+
+int get_nprocs_conf(void)
+{
+#ifdef CONFIG_SMP_NCPUS
+  return CONFIG_SMP_NCPUS;
+#else
+  return 1;
+#endif
+}
+
+/****************************************************************************
+ * Name: get_nprocs
+ *
+ * Description:
+ *   Retrieve the number of online processors in the system.
+ *   The get_nprocs() function returns the number of processors (CPUs) that
+ *   are currently online and available for use in the system. This function
+ *   can be useful for determining the number of processors that can be used
+ *   by applications or the operating system for parallel processing.
+ *
+ * Input Parameters:
+ *   None
+ *
+ * Returned Value:
+ *   On success, the number of online processors is returned.
+ *   If the system does not define a processor configuration, it returns 1.
+ *
+ ****************************************************************************/
+
+int get_nprocs(void)
+{
+#ifdef CONFIG_SMP_NCPUS
+  return CONFIG_SMP_NCPUS;
+#else
+  return 1;
+#endif
+}