Fix non-Android build targets

Non-Android build targets are missing sys/prctl.h header and functionality
should be disabled for them like it was done previously inside
sched_policy.cpp. Also make the set_sched_policy/get_sched_policy
functionality backward compatible by creating stubs for non-Android
targets.

Bug: 111307099
Test: built sdk_gphone_x86-sdk_addon_mac target using forrest

Change-Id: I1c195267e287a84a21c588bd61d7c452bff6cfbe
Merged-In: I1c195267e287a84a21c588bd61d7c452bff6cfbe
Signed-off-by: Suren Baghdasaryan <surenb@google.com>

libprocessgroup/sched_policy.cpp

@@ -36,6 +36,8 @@ static inline SchedPolicy _policy(SchedPolicy p) {
     return p == SP_DEFAULT ? SP_SYSTEM_DEFAULT : p;
 }
 
+#if defined(__ANDROID__)
+
 int set_cpuset_policy(int tid, SchedPolicy policy) {
     if (tid == 0) {
         tid = GetThreadId();
@@ -195,6 +197,21 @@ int get_sched_policy(int tid, SchedPolicy* policy) {
     return 0;
 }
 
+#else
+
+/* Stubs for non-Android targets. */
+
+int set_sched_policy(int, SchedPolicy) {
+    return 0;
+}
+
+int get_sched_policy(int, SchedPolicy* policy) {
+    *policy = SP_SYSTEM_DEFAULT;
+    return 0;
+}
+
+#endif
+
 const char* get_sched_policy_name(SchedPolicy policy) {
     policy = _policy(policy);
     static const char* const kSchedPolicyNames[] = {

libprocessgroup/task_profiles.cpp

@@ -18,7 +18,6 @@
 #define LOG_TAG "libprocessgroup"
 
 #include <fcntl.h>
-#include <sys/prctl.h>
 #include <task_profiles.h>
 #include <string>
 
@@ -32,6 +31,11 @@
 #include <json/reader.h>
 #include <json/value.h>
 
+// To avoid issues in sdk_mac build
+#if defined(__ANDROID__)
+#include <sys/prctl.h>
+#endif
+
 using android::base::GetThreadId;
 using android::base::StringPrintf;
 using android::base::unique_fd;
@@ -69,6 +73,9 @@ bool SetClampsAction::ExecuteForTask(int) const {
     return false;
 }
 
+// To avoid issues in sdk_mac build
+#if defined(__ANDROID__)
+
 bool SetTimerSlackAction::IsTimerSlackSupported(int tid) {
     auto file = StringPrintf("/proc/%d/timerslack_ns", tid);
 
@@ -97,6 +104,8 @@ bool SetTimerSlackAction::ExecuteForTask(int tid) const {
     return true;
 }
 
+#endif
+
 bool SetAttributeAction::ExecuteForProcess(uid_t, pid_t pid) const {
     return ExecuteForTask(pid);
 }

libprocessgroup/task_profiles.h

@@ -63,6 +63,9 @@ class SetClampsAction : public ProfileAction {
     int clamp_;
 };
 
+// To avoid issues in sdk_mac build
+#if defined(__ANDROID__)
+
 class SetTimerSlackAction : public ProfileAction {
   public:
     SetTimerSlackAction(unsigned long slack) noexcept : slack_(slack) {}
@@ -75,6 +78,17 @@ class SetTimerSlackAction : public ProfileAction {
     static bool IsTimerSlackSupported(int tid);
 };
 
+#else
+
+class SetTimerSlackAction : public ProfileAction {
+  public:
+    SetTimerSlackAction(unsigned long) noexcept {}
+
+    virtual bool ExecuteForTask(int) const { return true; }
+};
+
+#endif
+
 // Set attribute profile element
 class SetAttributeAction : public ProfileAction {
   public: