Exclude cgroup implementation from non-Linux Unix builds

src/coreclr/gc/unix/cgroup.cpp

@@ -10,9 +10,10 @@ Module Name:
 Abstract:
     Read the memory limit for the current process
 --*/
-#ifdef __FreeBSD__
-#define _WITH_GETLINE
-#endif
+#include "cgroup.h"
+#include <cstddef>
+
+#if defined(TARGET_LINUX) || defined(TARGET_ANDROID)
 
 #include <cstdint>
 #include <cassert>
@@ -21,19 +22,12 @@ Module Name:
 #include <stdio.h>
 #include <string.h>
 #include <sys/resource.h>
-#if defined(__APPLE__) || defined(__FreeBSD__)
-#include <sys/param.h>
-#include <sys/mount.h>
-#elif !defined(__HAIKU__)
 #include <sys/vfs.h>
-#endif
 #include <errno.h>
 #include <limits>
 
 #include "config.gc.h"
 
-#include "cgroup.h"
-
 #ifndef SIZE_T_MAX
 #define SIZE_T_MAX (~(size_t)0)
 #endif
@@ -122,10 +116,6 @@ class CGroup
         // modes because both of those involve cgroup v1 controllers managing
         // resources.
 
-#if !HAVE_NON_LEGACY_STATFS || TARGET_WASM
-        return 0;
-#else
-
         struct statfs stats;
         int result = statfs("/sys/fs/cgroup", &stats);
         if (result != 0)
@@ -142,7 +132,6 @@ class CGroup
             // been seen in the wild.
             return 1;
         }
-#endif
     }
 
     static bool IsCGroup1MemorySubsystem(const char *strTok){
@@ -656,3 +645,25 @@ bool GetPhysicalMemoryUsed(size_t* val)
     free(line);
     return result;
 }
+
+#else // !(TARGET_LINUX || TARGET_ANDROID)
+
+void InitializeCGroup()
+{
+}
+
+void CleanupCGroup()
+{
+}
+
+size_t GetRestrictedPhysicalMemoryLimit()
+{
+    return 0;
+}
+
+bool GetPhysicalMemoryUsed(size_t* val)
+{
+    return false;
+}
+
+#endif // TARGET_LINUX || TARGET_ANDROID

src/coreclr/nativeaot/Runtime/unix/cgroupcpu.cpp

@@ -10,31 +10,24 @@ Module Name:
 Abstract:
     Read cpu limits for the current process
 --*/
-#ifdef __FreeBSD__
-#define _WITH_GETLINE
-#endif
-
 #include <cstdint>
+#include "cgroupcpu.h"
+
+#if defined(TARGET_LINUX) || defined(TARGET_ANDROID)
+
 #include <cstddef>
 #include <cassert>
 #include <unistd.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 #include <sys/resource.h>
-#if defined(__APPLE__) || defined(__FreeBSD__)
-#include <sys/param.h>
-#include <sys/mount.h>
-#elif !defined(__HAIKU__)
 #include <sys/vfs.h>
-#endif
 #include <errno.h>
 #include <limits>
 
 #include "config.gc.h"
 
-#include "cgroupcpu.h"
-
 #define CGROUP2_SUPER_MAGIC 0x63677270
 
 #define BASE_TEN 10
@@ -90,10 +83,6 @@ class CGroup
         // modes because both of those involve cgroup v1 controllers managing
         // resources.
 
-#if !HAVE_NON_LEGACY_STATFS
-        return 0;
-#else
-
         struct statfs stats;
         int result = statfs("/sys/fs/cgroup", &stats);
         if (result != 0)
@@ -110,7 +99,6 @@ class CGroup
             // been seen in the wild.
             return 1;
         }
-#endif
     }
 
     static bool IsCGroup1CpuSubsystem(const char *strTok){
@@ -510,3 +498,16 @@ bool GetCpuLimit(uint32_t* val)
 
     return CGroup::GetCpuLimit(val);
 }
+
+#else // !(TARGET_LINUX || TARGET_ANDROID)
+
+void InitializeCpuCGroup()
+{
+}
+
+bool GetCpuLimit(uint32_t* val)
+{
+    return false;
+}
+
+#endif // TARGET_LINUX || TARGET_ANDROID

src/coreclr/pal/src/misc/cgroup.cpp

@@ -20,12 +20,10 @@ SET_DEFAULT_DEBUG_CHANNEL(MISC);
 #include "pal/virtual.h"
 #include "pal/cgroup.h"
 #include <algorithm>
-#if defined(__APPLE__) || defined(__FreeBSD__)
-#include <sys/param.h>
-#include <sys/mount.h>
-#elif !defined(__HAIKU__)
+
+#if defined(TARGET_LINUX) || defined(TARGET_ANDROID)
+
 #include <sys/vfs.h>
-#endif
 
 #define CGROUP2_SUPER_MAGIC 0x63677270
 
@@ -87,9 +85,6 @@ class CGroup
         // modes because both of those involve cgroup v1 controllers managing
         // resources.
 
-#if !HAVE_NON_LEGACY_STATFS || TARGET_OPENBSD || TARGET_WASM
-        return 0;
-#else
         struct statfs stats;
         int result = statfs("/sys/fs/cgroup", &stats);
 
@@ -107,7 +102,6 @@ class CGroup
             // been seen in the wild.
             return 1;
         }
-#endif
     }
 
     static bool IsCGroup1CpuSubsystem(const char *strTok){
@@ -525,3 +519,22 @@ PAL_GetCpuLimit(UINT* val)
 
     return CGroup::GetCpuLimit(val);
 }
+
+#else // !(TARGET_LINUX || TARGET_ANDROID)
+
+void InitializeCGroup()
+{
+}
+
+void CleanupCGroup()
+{
+}
+
+BOOL
+PALAPI
+PAL_GetCpuLimit(UINT* val)
+{
+    return FALSE;
+}
+
+#endif // TARGET_LINUX || TARGET_ANDROID