Merge "sched_policy: add get_cpuset/sched_policy_profile_name" (ed2d29ea) · Commits · e / os / android_system_core

libcutils/sched_policy_test.cpp

+14 −2

Original line number	Diff line number	Diff line
		@@ -107,6 +107,18 @@ TEST(SchedPolicy, set_sched_policy_timerslack) {

		TEST(SchedPolicy, get_sched_policy_name) {
		EXPECT_STREQ("bg", get_sched_policy_name(SP_BACKGROUND));
		EXPECT_STREQ("error", get_sched_policy_name(SchedPolicy(-2)));
		EXPECT_STREQ("error", get_sched_policy_name(SP_CNT));
		EXPECT_EQ(nullptr, get_sched_policy_name(SchedPolicy(-2)));
		EXPECT_EQ(nullptr, get_sched_policy_name(SP_CNT));
		}

		TEST(SchedPolicy, get_cpuset_policy_profile_name) {
		EXPECT_STREQ("CPUSET_SP_BACKGROUND", get_cpuset_policy_profile_name(SP_BACKGROUND));
		EXPECT_EQ(nullptr, get_cpuset_policy_profile_name(SchedPolicy(-2)));
		EXPECT_EQ(nullptr, get_cpuset_policy_profile_name(SP_CNT));
		}

		TEST(SchedPolicy, get_sched_policy_profile_name) {
		EXPECT_STREQ("SCHED_SP_BACKGROUND", get_sched_policy_profile_name(SP_BACKGROUND));
		EXPECT_EQ(nullptr, get_sched_policy_profile_name(SchedPolicy(-2)));
		EXPECT_EQ(nullptr, get_sched_policy_profile_name(SP_CNT));
		}

libprocessgroup/include/processgroup/sched_policy.h

+12 −1

Original line number	Diff line number	Diff line
		@@ -70,11 +70,22 @@ extern int set_sched_policy(int tid, SchedPolicy policy);
		extern int get_sched_policy(int tid, SchedPolicy* policy);

		/* Return a displayable string corresponding to policy.
		* Return value: non-NULL NUL-terminated name of unspecified length;
		* Return value: NUL-terminated name of unspecified length, nullptr if invalid;
		* the caller is responsible for displaying the useful part of the string.
		*/
		extern const char* get_sched_policy_name(SchedPolicy policy);

		/* Return the aggregated task profile name corresponding to cpuset policy.
		* Return value: NUL-terminated name of unspecified length, nullptr if invalid;
		* the caller could use it to call SetTaskProfiles.
		*/
		extern const char* get_cpuset_policy_profile_name(SchedPolicy policy);

		/* Return the aggregated task profile name corresponding to sched policy.
		* Return value: NUL-terminated name of unspecified length, nullptr if invalid;
		* the caller could use it to call SetTaskProfiles.
		*/
		extern const char* get_sched_policy_profile_name(SchedPolicy policy);
		#ifdef __cplusplus
		}
		#endif

libprocessgroup/sched_policy.cpp

+39 −1

Original line number	Diff line number	Diff line
		@@ -212,7 +212,45 @@ const char* get_sched_policy_name(SchedPolicy policy) {
		};
		static_assert(arraysize(kSchedPolicyNames) == SP_CNT, "missing name");
		if (policy < SP_BACKGROUND \|\| policy >= SP_CNT) {
		return "error";
		return nullptr;
		}
		return kSchedPolicyNames[policy];
		}

		const char* get_cpuset_policy_profile_name(SchedPolicy policy) {
		/*
		* cpuset profile array for:
		* SP_DEFAULT(-1), SP_BACKGROUND(0), SP_FOREGROUND(1),
		* SP_SYSTEM(2), SP_AUDIO_APP(3), SP_AUDIO_SYS(4),
		* SP_TOP_APP(5), SP_RT_APP(6), SP_RESTRICTED(7)
		* index is policy + 1
		* this need keep in sync with SchedPolicy enum
		*/
		static constexpr const char* kCpusetProfiles[SP_CNT + 1] = {
		"CPUSET_SP_DEFAULT", "CPUSET_SP_BACKGROUND", "CPUSET_SP_FOREGROUND",
		"CPUSET_SP_SYSTEM", "CPUSET_SP_FOREGROUND", "CPUSET_SP_FOREGROUND",
		"CPUSET_SP_TOP_APP", "CPUSET_SP_DEFAULT", "CPUSET_SP_RESTRICTED"};
		if (policy < SP_DEFAULT \|\| policy >= SP_CNT) {
		return nullptr;
		}
		return kCpusetProfiles[policy + 1];
		}

		const char* get_sched_policy_profile_name(SchedPolicy policy) {
		/*
		* sched profile array for:
		* SP_DEFAULT(-1), SP_BACKGROUND(0), SP_FOREGROUND(1),
		* SP_SYSTEM(2), SP_AUDIO_APP(3), SP_AUDIO_SYS(4),
		* SP_TOP_APP(5), SP_RT_APP(6), SP_RESTRICTED(7)
		* index is policy + 1
		* this need keep in sync with SchedPolicy enum
		*/
		static constexpr const char* kSchedProfiles[SP_CNT + 1] = {
		"SCHED_SP_DEFAULT", "SCHED_SP_BACKGROUND", "SCHED_SP_FOREGROUND",
		"SCHED_SP_DEFAULT", "SCHED_SP_FOREGROUND", "SCHED_SP_FOREGROUND",
		"SCHED_SP_TOP_APP", "SCHED_SP_RT_APP", "SCHED_SP_DEFAULT"};
		if (policy < SP_DEFAULT \|\| policy >= SP_CNT) {
		return nullptr;
		}
		return kSchedProfiles[policy + 1];
		}