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--- /dev/null
+/*
+ * Copyright (c) 2012 Apple Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+#include <mach/mach.h>
+#include <err.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+static void usage(void);
+static void do_print(void);
+static void do_difftime(bool usepercent, uint64_t olduser, uint64_t oldsystem, uint64_t oldidle);
+static kern_return_t get_processor_time(uint64_t *user, uint64_t *sys, uint64_t *idle);
+static kern_return_t get_processor_count(int *ncpu);
+
+int
+main(int argc, char *argv[])
+{
+ int ch;
+ const char *optu = NULL;
+ const char *opts = NULL;
+ const char *opti = NULL;
+ int pid;
+ int status;
+ uint64_t olduser, oldsystem, oldidle;
+ kern_return_t kret;
+ bool usepercent = false;
+
+ while ((ch = getopt(argc, argv, "Ppu:s:i:")) != -1) {
+ switch (ch) {
+ case 'P':
+ usepercent = true;
+ break;
+ case 'p':
+ do_print();
+ exit(0);
+ break;
+ case 'u':
+ optu = optarg;
+ break;
+ case 's':
+ opts = optarg;
+ break;
+ case 'i':
+ opti = optarg;
+ break;
+ case '?':
+ default:
+ usage();
+ }
+ }
+
+ if (optu || opts || opti) {
+ char *endstr;
+
+ if (!optu)
+ usage();
+ olduser = strtoull(optu, &endstr, 0);
+ if (optu[0] == '\0' || endstr[0] != '\0')
+ usage();
+
+ if (!opts)
+ usage();
+ oldsystem = strtoull(opts, &endstr, 0);
+ if (opts[0] == '\0' || endstr[0] != '\0')
+ usage();
+
+ if (!opti)
+ usage();
+ oldidle = strtoull(opti, &endstr, 0);
+ if (opti[0] == '\0' || endstr[0] != '\0')
+ usage();
+
+ do_difftime(usepercent, olduser, oldsystem, oldidle);
+ exit(0);
+ }
+
+ argc -= optind;
+ argv += optind;
+
+ if (argc == 0)
+ usage();
+
+ kret = get_processor_time(&olduser, &oldsystem, &oldidle);
+ if (kret)
+ errx(1, "Error getting processor time: %s (%d)", mach_error_string(kret), kret);
+
+ switch(pid = vfork()) {
+ case -1: /* error */
+ perror("time");
+ exit(1);
+ /* NOTREACHED */
+ case 0: /* child */
+ execvp(*argv, argv);
+ perror(*argv);
+ _exit((errno == ENOENT) ? 127 : 126);
+ /* NOTREACHED */
+ }
+
+ /* parent */
+ (void)signal(SIGINT, SIG_IGN);
+ (void)signal(SIGQUIT, SIG_IGN);
+ while (wait(&status) != pid);
+
+ do_difftime(usepercent, olduser, oldsystem, oldidle);
+
+ exit (WIFEXITED(status) ? WEXITSTATUS(status) : EXIT_FAILURE);
+
+ return 0;
+}
+
+static void
+usage(void)
+{
+ fprintf(stderr, "usage: systime [-P] utility [argument ...]\n"
+ " systime -p\n"
+ " systime [-P] -u user -s sys -i idle\n");
+ exit(1);
+}
+
+static void
+do_print(void)
+{
+ uint64_t user, system, idle;
+ kern_return_t kret;
+
+ kret = get_processor_time(&user, &system, &idle);
+ if (kret)
+ errx(1, "Error getting processor time: %s (%d)", mach_error_string(kret), kret);
+
+ printf("systime_user=%llu\n", user);
+ printf("systime_sys=%llu\n", system);
+ printf("systime_idle=%llu\n", idle);
+}
+
+static void
+do_difftime(bool usepercent, uint64_t olduser, uint64_t oldsystem, uint64_t oldidle)
+{
+ uint64_t user, system, idle;
+ uint64_t userelapsed, systemelapsed, idleelapsed, totalelapsed;
+ kern_return_t kret;
+
+ kret = get_processor_time(&user, &system, &idle);
+ if (kret)
+ errx(1, "Error getting processor time: %s (%d)", mach_error_string(kret), kret);
+
+ userelapsed = user - olduser;
+ systemelapsed = system - oldsystem;
+ idleelapsed = idle - oldidle;
+ totalelapsed = userelapsed + systemelapsed + idleelapsed;
+
+ if (usepercent) {
+ fprintf(stderr, "%1.02f%% user %1.02f%% sys %1.02f%% idle\n",
+ ((double)userelapsed * 100)/totalelapsed,
+ ((double)systemelapsed * 100)/totalelapsed,
+ ((double)idleelapsed * 100)/totalelapsed);
+ } else {
+ int ncpu;
+
+ kret = get_processor_count(&ncpu);
+ if (kret)
+ errx(1, "Error getting processor count: %s (%d)", mach_error_string(kret), kret);
+
+ fprintf(stderr, "%1.02f real %1.02f user %1.02f sys\n",
+ ((double)totalelapsed) / 1000 /* ms per sec */ / ncpu,
+ ((double)userelapsed) / 1000,
+ ((double)systemelapsed) / 1000);
+ }
+}
+
+static kern_return_t
+get_processor_time(uint64_t *user, uint64_t *sys, uint64_t *idle)
+{
+ host_name_port_t host;
+ kern_return_t kret;
+ host_cpu_load_info_data_t host_load;
+ mach_msg_type_number_t count;
+
+ host = mach_host_self();
+
+ count = HOST_CPU_LOAD_INFO_COUNT;
+
+ kret = host_statistics(host, HOST_CPU_LOAD_INFO, (host_info_t)&host_load, &count);
+ if (kret)
+ return kret;
+
+ *user = ((uint64_t)host_load.cpu_ticks[CPU_STATE_USER]) * 10 /* ms per tick */;
+ *sys = ((uint64_t)host_load.cpu_ticks[CPU_STATE_SYSTEM]) * 10;
+ *idle = ((uint64_t)host_load.cpu_ticks[CPU_STATE_IDLE]) * 10;
+
+ return KERN_SUCCESS;
+}
+
+static kern_return_t
+get_processor_count(int *ncpu)
+{
+ host_name_port_t host;
+ kern_return_t kret;
+ host_basic_info_data_t hi;
+ mach_msg_type_number_t count;
+
+ host = mach_host_self();
+
+ count = HOST_BASIC_INFO_COUNT;
+
+ kret = host_info(host, HOST_BASIC_INFO, (host_info_t)&hi, &count);
+ if (kret)
+ return kret;
+
+ *ncpu = hi.avail_cpus;
+
+ return KERN_SUCCESS;
+}
projects / apple / shell_cmds.git / commitdiff
