From: Apple <opensource@apple.com>
Date: Thu, 10 Dec 2009 03:28:52 +0000 (+0000)
Subject: system_cmds-498.2.tar.gz
X-Git-Tag: mac-os-x-1064^0
X-Git-Url: https://git.saurik.com/apple/system_cmds.git/commitdiff_plain/fa62d991a164ca3b9c2d6311b462257aea81aded

system_cmds-498.2.tar.gz
---

diff --git a/Makefile b/Makefile
index 03324f3..ff782bf 100644
--- a/Makefile
+++ b/Makefile
@@ -15,6 +15,8 @@ SubProjects = ac.tproj accton.tproj arch.tproj bootlog.tproj		\
 ifeq "$(Embedded)" "NO"
 SubProjects += at.tproj atrun.tproj \
 	chkpasswd.tproj chpass.tproj dirhelper.tproj shutdown.tproj
+else
+SubProjects += mean.tproj
 endif
 
 Extra_LD_Flags += -lcurses -lutil
diff --git a/mean.tproj/Makefile b/mean.tproj/Makefile
new file mode 100644
index 0000000..97ab226
--- /dev/null
+++ b/mean.tproj/Makefile
@@ -0,0 +1,9 @@
+Project = mean
+Install_Dir = /usr/local/bin/
+
+CFILES = mean.c
+
+Extra_CC_Flags = -Wall -Werror
+
+include $(MAKEFILEPATH)/CoreOS/ReleaseControl/BSDCommon.make
+
diff --git a/mean.tproj/mean.c b/mean.tproj/mean.c
new file mode 100644
index 0000000..9e56018
--- /dev/null
+++ b/mean.tproj/mean.c
@@ -0,0 +1,116 @@
+/*
+ *  mean.c
+ *  mean - lower process priorities with more force than nice
+ *
+ *  Created by Lucia Ballard on 9/16/09.
+ *  Copyright 2009 Apple Inc. All rights reserved.
+ *
+ */
+
+#include <mach/mach.h>
+#include <mach/task.h>
+
+#include <sys/resource.h>
+
+#include <errno.h>
+#include <getopt.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+void usage(void);
+
+#ifndef PRIO_DARWIN_PROCESS
+#define PRIO_DARWIN_PROCESS 4       /* Second argument is a PID */
+#endif
+
+void 
+usage(void)
+{
+		fprintf(stderr, "Usage: mean -t <pid>\n");
+		fprintf(stderr, "\tthrottle <pid>'s usage of cpu, I/O, and networking\n");
+		fprintf(stderr, "mean -u <pid>\n");
+		fprintf(stderr,  "\treturn <pid> to normal priority\n");
+		fprintf(stderr, "mean -[s|r] <pid>\n");
+		fprintf(stderr,  "\tsuspend or resume <pid>\n");
+		exit(0);
+}
+
+int 
+main(int argc, char **argv)
+{
+	int pid, err, ch;
+	mach_port_t task;
+	int priority = 0;
+	
+	boolean_t do_resume = 0, do_suspend = 0;
+	boolean_t do_throttle = 0, do_undo = 0;
+	
+	if (argc < 2) 
+		usage();
+	
+	while ((ch = getopt(argc, argv, "rstu")) != -1)
+	switch (ch) {
+		case 'u':
+			do_undo = 1;
+			continue;
+		case 'r':
+			do_resume = 1;
+			continue;
+		case 's':
+			do_suspend = 1;
+			continue;
+		case 't':
+			do_throttle = 1;
+			continue;
+		default:
+			usage();
+	}
+	
+	argc -= optind; argv += optind;
+	
+	if (argc == 0)
+		usage();
+
+	pid = atoi(*argv);
+	if (!pid) 
+		usage();
+
+	if (do_throttle || do_undo) {
+		priority = PRIO_DARWIN_BG;
+
+		if (do_undo)
+			priority = 0;
+
+		err = setpriority(PRIO_DARWIN_PROCESS, pid, priority);
+		if (err) {
+			fprintf(stderr, "Failed to set priority (%d)\n", errno);
+			exit(0);
+		}
+	}
+
+	if (do_suspend || do_resume) {
+		err = task_for_pid(mach_task_self(), pid, &task);
+		if (err) {
+			fprintf(stderr, "Failed to get task port (%d)\n", err);
+			exit(0);
+		}
+
+		if (do_suspend) {
+			err = task_suspend(task);
+			if (err) {
+				fprintf(stderr, "Failed to suspend task (%d)\n", err);
+			}
+
+		}
+
+		if (do_resume) {
+			err = task_resume(task);
+			if (err) {
+				fprintf(stderr, "Failed to resume task (%d)\n", err);
+			}
+		}
+	}
+
+	return 0;
+}
+