Merge \\"Add process priority to service definition.\\" am: 14b00baaae (69cfeabf) · Commits · e / os / android_system_core

init/readme.txt

+3 −0

Original line number	Diff line number	Diff line
		@@ -184,6 +184,9 @@ writepid <file...>
		Write the child's pid to the given files when it forks. Meant for
		cgroup/cpuset usage.

		priority <priority>
		Scheduling priority of the service process. This value has to be in range
		-20 to 19. Default priority is 0. Priority is set via setpriority().

		Triggers
		--------

init/service.cpp

+26 −2

Original line number	Diff line number	Diff line
		@@ -17,7 +17,9 @@
		#include "service.h"

		#include <fcntl.h>
		#include <sys/resource.h>
		#include <sys/stat.h>
		#include <sys/time.h>
		#include <sys/types.h>
		#include <sys/wait.h>
		#include <termios.h>
		@@ -29,6 +31,7 @@
		#include <android-base/stringprintf.h>
		#include <cutils/android_reboot.h>
		#include <cutils/sockets.h>
		#include <system/thread_defs.h>

		#include <processgroup/processgroup.h>

		@@ -65,7 +68,7 @@ Service::Service(const std::string& name, const std::string& classname,
		const std::vector<std::string>& args)
		: name_(name), classname_(classname), flags_(0), pid_(0), time_started_(0),
		time_crashed_(0), nr_crashed_(0), uid_(0), gid_(0), seclabel_(""),
		ioprio_class_(IoSchedClass_NONE), ioprio_pri_(0), args_(args) {
		ioprio_class_(IoSchedClass_NONE), ioprio_pri_(0), priority_(0), args_(args) {
		onrestart_.InitSingleTrigger("onrestart");
		}

		@@ -74,7 +77,8 @@ Service::Service(const std::string& name, const std::string& classname,
		const std::string& seclabel, const std::vector<std::string>& args)
		: name_(name), classname_(classname), flags_(flags), pid_(0), time_started_(0),
		time_crashed_(0), nr_crashed_(0), uid_(uid), gid_(gid), supp_gids_(supp_gids),
		seclabel_(seclabel), ioprio_class_(IoSchedClass_NONE), ioprio_pri_(0), args_(args) {
		seclabel_(seclabel), ioprio_class_(IoSchedClass_NONE), ioprio_pri_(0), priority_(0),
		args_(args) {
		onrestart_.InitSingleTrigger("onrestart");
		}

		@@ -197,6 +201,19 @@ bool Service::HandleGroup(const std::vector<std::string>& args, std::string* err
		return true;
		}

		bool Service::HandlePriority(const std::vector<std::string>& args, std::string* err) {
		priority_ = std::stoi(args[1]);

		if (priority_ < ANDROID_PRIORITY_HIGHEST \|\| priority_ > ANDROID_PRIORITY_LOWEST) {
		priority_ = 0;
		*err = StringPrintf("process priority value must be range %d - %d",
		ANDROID_PRIORITY_HIGHEST, ANDROID_PRIORITY_LOWEST);
		return false;
		}

		return true;
		}

		bool Service::HandleIoprio(const std::vector<std::string>& args, std::string* err) {
		ioprio_pri_ = std::stoul(args[2], 0, 8);

		@@ -290,6 +307,7 @@ Service::OptionHandlerMap::Map& Service::OptionHandlerMap::map() const {
		{"disabled", {0, 0, &Service::HandleDisabled}},
		{"group", {1, NR_SVC_SUPP_GIDS + 1, &Service::HandleGroup}},
		{"ioprio", {2, 2, &Service::HandleIoprio}},
		{"priority", {1, 1, &Service::HandlePriority}},
		{"keycodes", {1, kMax, &Service::HandleKeycodes}},
		{"oneshot", {0, 0, &Service::HandleOneshot}},
		{"onrestart", {1, kMax, &Service::HandleOnrestart}},
		@@ -470,6 +488,12 @@ bool Service::Start() {
		_exit(127);
		}
		}
		if (priority_ != 0) {
		if (setpriority(PRIO_PROCESS, 0, priority_) != 0) {
		ERROR("setpriority failed: %s\n", strerror(errno));
		_exit(127);
		}
		}

		std::vector<char*> strs;
		for (const auto& s : args_) {

init/service.h

+3 −0

Original line number	Diff line number	Diff line
		@@ -93,6 +93,7 @@ public:
		pid_t pid() const { return pid_; }
		uid_t uid() const { return uid_; }
		gid_t gid() const { return gid_; }
		int priority() const { return priority_; }
		const std::vector<gid_t>& supp_gids() const { return supp_gids_; }
		const std::string& seclabel() const { return seclabel_; }
		const std::vector<int>& keycodes() const { return keycodes_; }
		@@ -116,6 +117,7 @@ private:
		bool HandleCritical(const std::vector<std::string>& args, std::string* err);
		bool HandleDisabled(const std::vector<std::string>& args, std::string* err);
		bool HandleGroup(const std::vector<std::string>& args, std::string* err);
		bool HandlePriority(const std::vector<std::string>& args, std::string* err);
		bool HandleIoprio(const std::vector<std::string>& args, std::string* err);
		bool HandleKeycodes(const std::vector<std::string>& args, std::string* err);
		bool HandleOneshot(const std::vector<std::string>& args, std::string* err);
		@@ -155,6 +157,7 @@ private:

		IoSchedClass ioprio_class_;
		int ioprio_pri_;
		int priority_;

		std::vector<std::string> args_;
		};